xinhai alluvial copper mining equipment

solutions for mines problems

solutions for mines problems

Gold CIP Production Line adsorbs gold from cyaniding pulp by active carbon including 7 steps: leaching pulp preparation, cyaniding leaching, carbon adsorption, gold loaded carbon desorption, pregnant solution electrodeposit, carbon regeneration, leaching pulp.

Gold CIL (Carbon in Leach) Process is an efficient design of extracting gold from its ore. By cyaniding and carbon leaching,CIL process lower the gold mining operation cost and increase gold recovery rate.

Flotation is widely used in gold processing. In China, 80% rock gold is processed by flotation. Flotation process maximizes the enrichment of gold into sulfide minerals. The tailings can be directly discharged. Flotation in gold mine has low beneficiation cost.

Gold cyanidation technology is a technology process which put activated carbon into pulp and leaching with absorbing gold at the same time. It includes the stages such as leaching pulp preparation, leaching and adsorbing, gold removal carbon recycling, pulp agitation, and gold loaded carbon desorption.

Scheelite dressing can use gravity, magnetic and flotation separation. The types and properties of the ore decide the separation methods and processes. Basing on good floatability of scheelite, the flotation is selected.

Hematite separation process is suitable for complex structure hematite such as hematite and impurities with uneven distribution of particle size, ore with large content of fine particle, ore with small amount of magnetite and the gangue minerals containing quartz or kaolin.

Magnetic separation places the leading position in iron ore separation. For weak magnetic and lean iron, Xinhai adopts gravity separation, magnetic separation, flotation, and roasting magnetic separation; used for strong magnetic iron ore, magnetic separation

According to different ore properties of phosphate, Xinhai designs many processes for it such as flotation, gravity separation, chemical leaching, combined dressing, photoelectric sorting, etc. Flotation is widely used in phosphate including direct flotation, reverse flotation, reverse flotation and flotation, and double-reverse flotation process.

Quartz SandSilica Sand purification is removal of a small amount of impurities and the high difficulty separation technique to obtain refined quartz sandsilica sand or high purity quartz sandsilica sand. The purification technologies of quartz sandsilica sand at home and abroad are washing, classifying & desliming, scrubbing, magnetic separation, flotation, acid leaching, microbial leaching, etc.

Process methods of fluorite (fluorspar) ore are gravity separation and flotation. Mineral processing equipment includes gravity separation equipment and flotation equipment; gravity separation equipment: jig, only jig can deal with the coarse fluorite (fluorspar) ore. Fluorite (Fluorspar) flotation equipment is the similar with other mineral flotation equipment including crusher, ball mill, flotation machine etc..

Wolframite consists of the quartz dyke type ores and veinlet tungsten ores. Dissemination size of ores is relatively coarse, so it is easy to separation. Xinhai wolframite mineral processing is a combined separating technology which mainly use gravity separation. And four stages are involved in this process, roughing, gravity separation, cleaning, and slime treatment.

Wolframite consists of the quartz dyke type ores and veinlet tungsten ores. Dissemination size of ores is relatively coarse, so it is easy to separation. Xinhai wolframite mineral processing is a combined separating technology which mainly use gravity separation. And four stages are involved in this process, roughing, gravity separation, cleaning, and slime treatment.

Silver flotation process of Xinhai includes three kinds of methods: flotation, flotation &gravity separation, flotation &cyaniding, while the flotation & cyaniding method is the most important process among the whole, silver concentrate can be get in the process of flotation, then regrinding to the next process including cyaniding and leaching, countercurrent washing, zinc powder replacement and silver ingot can be finally get after the last process of electrolytic dissociation. Thus the process characterized by high recovery and economic benefits.

Silver flotation process of Xinhai includes three kinds of methods: flotation, flotation &gravity separation, flotation &cyaniding, while the flotation & cyaniding method is the most important process among the whole, silver concentrate can be get in the process of flotation, then regrinding to the next process including cyaniding and leaching, countercurrent washing, zinc powder replacement and silver ingot can be finally get after the last process of electrolytic dissociation. Thus the process characterized by high recovery and economic benefits.

For the gravity separation of barite, the process of Xinhai is crushing, screening and jigging. Then the high grade (over 80%) concentrate will be produced. Jig is the main equipment for the separation and purification of barite ore, which is energy saving.

For the gravity separation of barite, the process of Xinhai is crushing, screening and jigging. Then the high grade (over 80%) concentrate will be produced. Jig is the main equipment for the separation and purification of barite ore, which is energy saving.

Manganese ore belongs to the weak magnetic minerals, which can be recovered by high-intensity magnetic separator. Xinhai applies the magnetic process to separate manganese ore, including two stages, rough separate the high-intensity magnetic ore and concentrate the medium intensity magnetic ore, thus improve the manganese grade by 4% to 10%.

Manganese ore belongs to the weak magnetic minerals, which can be recovered by high-intensity magnetic separator. Xinhai applies the magnetic process to separate manganese ore, including two stages, rough separate the high-intensity magnetic ore and concentrate the medium intensity magnetic ore, thus improve the manganese grade by 4% to 10%.

Proportion of antimony ore is far greater than proportion of gangue, so it will be separated by using the method gravity separation. This method has many features, high efficiency, energy saving, and environment protection, which can make the low-grade ore enrichment advance.

Proportion of antimony ore is far greater than proportion of gangue, so it will be separated by using the method gravity separation. This method has many features, high efficiency, energy saving, and environment protection, which can make the low-grade ore enrichment advance.

Chrome ore deposits are mined by both underground and surface techniques. most chrome ore must be processed by the chrome ore processing plants. the mainly chrome ore beneficiation method is gravity separation. so the mainly used chrome ore concentrating equipments are ore washbox (sometimes it is called jigger), concentrating table, spiral classifiers, etc.

Chrome ore deposits are mined by both underground and surface techniques. most chrome ore must be processed by the chrome ore processing plants. the mainly chrome ore beneficiation method is gravity separation. so the mainly used chrome ore concentrating equipments are ore washbox (sometimes it is called jigger), concentrating table, spiral classifiers, etc.

Copper is one of the most useful metals .Copper ore beneficiation is a process to extract copper from raw ores. Copper ore is an ore which can produce copper metal by crushing it in ore crushing plant, grinding it in Ball mill and then smelting it in a furnace along with a piece of tin ore. Xinhai Mining Machinery is a professional manufacturer of copper ore processing equipment.

Copper is one of the most useful metals .Copper ore beneficiation is a process to extract copper from raw ores. Copper ore is an ore which can produce copper metal by crushing it in ore crushing plant, grinding it in Ball mill and then smelting it in a furnace along with a piece of tin ore. Xinhai Mining Machinery is a professional manufacturer of copper ore processing equipment.

The density of tin ore is larger than the paragenetic mineral, so the mining process of tinCassiterite ore apply gravity separation. However, all kinds of Iron oxides exist in those ore, like magnetite, hematite, etc., which cannot be well separated by using gravity or flotation separation. Herein, magnetic separation and flotation separation will be used.

The density of tin ore is larger than the paragenetic mineral, so the mining process of tinCassiterite ore apply gravity separation. However, all kinds of Iron oxides exist in those ore, like magnetite, hematite, etc., which cannot be well separated by using gravity or flotation separation. Herein, magnetic separation and flotation separation will be used.

Nickel Ore can be divided into copper sulfide nickel ore and nickel oxide ore, flotation is the main beneficiation method when processing copper sulfide nickel ore, magnetic separating and gravity separating are the commonly auxiliary methods.

Nickel Ore can be divided into copper sulfide nickel ore and nickel oxide ore, flotation is the main beneficiation method when processing copper sulfide nickel ore, magnetic separating and gravity separating are the commonly auxiliary methods.

Crystalline graphite and flake graphite has naturally floatability, thus Xinhai usually adopts flotation separation to process graphite from raw ore. Gravity separation mixing with flotation method can also be applied into the situation that graphite ore mixing with multi-gangue.

Crystalline graphite and flake graphite has naturally floatability, thus Xinhai usually adopts flotation separation to process graphite from raw ore. Gravity separation mixing with flotation method can also be applied into the situation that graphite ore mixing with multi-gangue.

Xinhai tailings re-election process, with the thought of protecting ecosystem and fully using resources, provide a re-lection for tailings of iron, gold, Lead-zinc, copper, fluorite, and so on. Xinhai can design reasonable process and fully find the value in the tailings.

Dolomite mining process is the solution of separating dolomite concentrate from Dolomite raw ore. Based on mosaic structure of the Dolomite mine and years of mining process experiences, Xinhai applying Dolomite mining process of two-stage crushing, washing, then three-stage separating, flotation process will be used to process Dolomite with complex structures.

Dry wet separation are the two main Kaolin mining process of Xinhai. Dry separation process is characterized by easy operation and saving cost.Xinhai wet separation process applying high gradient magnetic separation(HGMS), froth flotation and selective flocculant to make full use of Kaolin mine resources.

Pyrite ore is a kind of vital mineral mine which mainly used for manufacturing sulfuric acid. Pyrite occurs in numerous shapes and habits. Concentrating equipment are mainly used in the process of Pyrite ore, including jig, concentrating table, and spiral classifier, etc.

Pyrite ore is a kind of vital mineral mine which mainly used for manufacturing sulfuric acid. Pyrite occurs in numerous shapes and habits. Concentrating equipment are mainly used in the process of Pyrite ore, including jig, concentrating table, and spiral classifier, etc.

Zircon ore mining process is the process of remove the impurity and promote the content of zircon. According to the characteristic of raw ore, Xinhai design methods of gravity separation, magnetic separation, flotation separation, or combined those methods

The plant design for froth flotation of sulfide ores depends on its component and ore floatability. After crushing grinding and gravity separation of sulfide ores, the froth flotation plant design is conducted under mineral testing and floatation reagent design.

mineral processing plant, technology, equipment manufacturers, mineral beneficiation - xinhai

mineral processing plant, technology, equipment manufacturers, mineral beneficiation - xinhai

Xinhai is focused on providing a whole range of services of Mineral Processing EPC (one-stop service for mineral processing plant), including mineral testing, engineer design, equipment manufacture, installation & commissioning and local training. The teams of geologists, mineral processing & mechanic experts of Xinhai are traveling around the world with accumulated experience of 200 EPC projects. Xinhai experts will provide the most professional mineral processing technology for mine investors.

Xinhai mineral processing EPC provides mine owners with one-stop services including mineral beneficiation test, mine design, etc.. Xinhai is committed to solving the problems of mineral processing plant such as budget overspending, schedule delaying, disputes of the manufacturers, etc.

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guide of alluvial gold mining process and alluvial gold equipment used in the alluvial gold washing plant - xinhai

guide of alluvial gold mining process and alluvial gold equipment used in the alluvial gold washing plant - xinhai

The rock gold in the mountain is separated from the quartz vein caused by water erosion. Most of this kind of gold is fine as the sand, so it is called alluvial gold. but what are the alluvial gold mining processes? And what is alluvial gold equipment commonly used in the alluvial gold washing plant?

Due to the free state of gold in sand gold deposits, and the specific gravity difference between gold and sand is very obvious, the gravity separation method is an ideal and efficient method to extract gold from the sand.

The principle of the alluvial gold mining process is to recover gold and all kinds of associated heavy minerals from raw ore as much as possible by the gravity dressing method. The lower limit of the particle size of gold recovery by gravity separation method is generally 0.01mm. In the practice, the alluvial gold mining process generally includes breaking, screening and gravity separation.

Many gold ore deposits contain cementing mud masses, some of which have a particle size greater than 100mm, sometimes even cement on gravel or pebbles. If not broken in time in the alluvial gold washing plant, the mud will be discharged along with the waste rock during the screening process, resulting in the loss of gold.

The screening operation can remove 20-40% of the waste rock (gravel, pebble), which is an indispensable operation in the alluvial gold washing plant. The determination of screening parameters must be based on the size composition of gold in the original ore. According to the ore washability, the alluvial gold washing plant generally can use plane vibrating screen, cylinder screen, scrubbers with the screen, hydraulic washing equipment.

Due to the different size composition of the gold in the alluvial gold deposit, the effective particle size limits of the materials treated by various gravity separators are also different. In general, the alluvial gold equipment mostly adopts jig as the roughing equipment and the shake table as the concentrating equipment for the jig coarse concentrate. Some low-grade alluvial gold washing plant adopts the chute as roughing equipment, the jig as scavenging equipment and the shaker table as the concentrating equipment. Therefore, the reasonable alluvial gold mining process is mostly the joint operation of several kinds of gravity separators.

The jigging process is to mix the mineral particles with different specific gravity and stratify them according to the specific gravity in the variable speed medium flow with vertical movement. The minerals with small specific gravity are in the upper layer, while the minerals with large specific gravity are in the lower layer. The layered materials are discharged separately by means of machinery and water flow.

The jig used for gold recovery is suitable for separation of coarse mineral particles (any raw mineral materials except for superfine material mineral), the range of beneficiation size is from 50 mm to 0.074 mm. The lower limit of beneficiation size is 0.04 mm for the alluvial gold mining process if the proportion difference is equal to or larger than 1.25, and the ore achieves the monomer dissociation.

The shake table is a kind of gravity separator in the inclined medium flow. It uses the combined action of the specific gravity difference of sorted minerals, alternating movement of bed surface, and transverse oblique water flow and riffle (or notch groove) to allow loose layering of ores on the bed surface and fan-shaped zoning. Then different products can be produced.

The shaking table used for the alluvial gold mining process is suitable for processing the minerals with fine particles. According to the different particle sizes, the ore can be divided into a coarse sand bed, fine sand bed and slurry bed. The coarse sand bed is suitable for the material particle size between 2.0 mm to 0.5 mm, the fine sand bed is suitable for processing material particle size between 0.5 mm to 0.074 mm, the slurry bed is suitable for processing the material particle size between 0.074 mm to 0.037 mm.

The chute used in the alluvial gold washing plant is a kind of gravity separator relying on the inclined water flow. The material particles settle on the different zone of chute under the joint force of water flow, mineral gravity, frictions between mineral grain and chute bottom. The particles with a small proportion are taken away by the water flow, and the particles with a large proportion are left.

The chute is suitable for the treatment of the alluvial gold with low mud content. The particle size range is 0.6 mm-0.03mm. Gravity separation by chute used in the alluvial gold mining process is featured with simple structure, large processing capacity and low comprehensive cost.

In the production, the selection of alluvial gold mining process and alluvial gold equipment need to be determined according to the specific ore properties and characteristics. Not all the alluvial gold washing plants adopt the same alluvial gold mining process and alluvial gold equipment can obtain the ideal separation effect. It is suggested that the mineral processing test shall be carried out first, so as to develop reasonable alluvial gold mining process and tailor-made alluvial gold equipment.

guide of alluvial gold mining technology - xinhai

guide of alluvial gold mining technology - xinhai

Alluvial gold deposits are the gold-bearing mud-sand sedimentary minerals formed by long-term weathering in pulmonic gold deposits, which are a kind of valuable mineral. In this passage, we will introduce you the alluvial gold mining technology from the main characteristics, preparation before processing and its processing technology.

This kind of gold minerals can be divided into bank sand gold, river sand gold, beach sand gold and riverbed sand gold. The gold content of these sand gold varies a lot, ranging from tens of milligrams per cubic meter to tens of kilograms per cubic meter. Because of the washing effect of its formation, the high-density useful minerals are gathered in the alluvial gold deposit. There are common platinum, cassiterite, magnetite, ilmenite, chromite, rutile, wolframite, scheelite besides the natural gold. The gangue minerals mainly include quartz, garnet, tourmaline, barite, mica and other minerals. The particle sizes of natural gold minerals are ranging from 0.1mm to 4mm, and with various shapes.

According to the sediment percentage, the alluvial gold can also be divided into washable type with sediment percentage less than 10%, medium washable type with sediment percentage between 10%~15%, and difficult to wash type with sediment percentage between 15%~30% and very difficult to wash type with sediment percentage more than 30%. The fine slime is mainly formed by non-metal minerals, including kaolin, montmorillonite clay, hydromica, calcite, feldspar and other fine clay minerals. The particle size of the clay minerals is usually more than 5 micron, and the content percentage is more than 3%.

The preparation of alluvial gold mining includes the wet crushing, washing and wet screening. During this period, the large gangue minerals and fine silt can be discarded, which is convenient for the successive classification and gravity separation.

In this stage, the factors influencing the working efficiency includes the degree of washing of raw ore, grainsize composition of raw ore, the method of water feeding, the water consumption of 1cubic meter raw ore, the structure of crushing equipment, the residence time of raw ore in the crushing equipment, the strength of crushing and washing, etc.

In the processing stage, the processing method is usually gravity separation for alluvial gold. A combined process of gravity separation and amalgamation of mercury is sometimes used. According to the difference of equipment, it can be divided into spiral chute separation, jig separation, shaking table separation, hydrocyclone separation, spiral separator separation and so on.

As a simple gravity separator, the spiral chute has the characteristics of large capacity, high enrichment, wide granularity range and so on. The main influencing factors includes the capacity of 1 meter long chute width or 1 square meter collecting area, the slope of chute, the concentration of slurry pulp, slurry flow velocity, the cover material and its shape, the grain size composition of raw ore, the heavy sand content, washing times and so on.

Jig separation has requirements on the particle size and content. The particle size is usually 10%-15% under 0.2mm. The raw ore should be with gold between 25-300mg in a cubic meters. Under this condition, the gold above 0.2mm can be recovered. Compared with spiral chute, jig separation has higher gold recovery rate in alluvial gold mining.

The hydrocyclones with cone angle of 90 or 120 degree is called processing hydrocyclone or short cone cyclone, which can be used in mineral processing. The application of this kind of hydrocyclone can receive a higher gold recovery rate and processing efficiency than jig separation and shaking table separation. In the alluvial gold mining, it can be used combined with jigs and spiral chutes in the same processing flow, as the gravity separation equipment of fine gold particles.

The spiral separator has simple structure, and small occupied area, which is easy to operate and energy saving. It can be used with jigs and spiral chutes in alluvial gold mining, to reach a higher recovery rate.

Shaking table has a smaller capacity than other gravity separation equipment, while the enrichment of concentrate is higher. The shaking table separation can be divided into two types, coarse sand shaking table separation and slime shaking table separation. The coarse recovery rate is up to 98%-99%, while the slime recovery rate is between 35%-55%, which is maily used for alluvial gold mining concentrating.

The above is some information about alluvial gold mining. In the production, it is reasonable to determine the certain processing technology and equipment through the mineral processing experiment, to guarantee a good economic efficiency on the basis of a good indicators in benefication.

mineral processing, equipment manufacturers, ball mills, flotation, thickener - xinhai

mineral processing, equipment manufacturers, ball mills, flotation, thickener - xinhai

The new grooved annular liner increases the ball ore contact surface, strengthens the grinding effect, and has the ability to lift the ore, reducing energy consumption; the large double-row spherical roller bearing design can reduce the friction.

An air inflation mechanical agitation floatation cell with slurry suction, which is featured with strong agitation force, good air spreading effect, uniform mixing of slurry and air, less sedimentary of tailings, low turnaround speed and low power consumption.

This thickener is a new type thickening equipment independently developed by Xinhai. The thickener is equipped with additional deaerating tank, which can eliminate the solid particles attaching to the bubbles.

A double stages slurry pump with head of 70m. It is lined with high wear-resisting rubber, whose abrasion resistance index is up to 128%. Double Stages Slurry Pump is a rare rubber slurry pump with integrated effects of wear-resisting, anticorrosion and high head.

The Mongolia 1,000t/d gold mineral processing plant was an EPC+M+O project. Xinhai worked to achieve high recovery of gold and other valuable minerals by cutting costs and maximizing benefits and attach great importance to workers safety, environmental protection and energy conservation.

Mexico 1500t/d copper lead zinc gold and silver polymetallic ore dressing project is a mining industry chain service (EPC + M + O) project undertaken by xinhai, which is solely undertaken by xinhai from design and research, manufacturing and procurement of complete sets of equipment, commissioning and delivery to mine management and operation.

The Guinea 6,000t/d gold mineral processing plant was an EPC+M+O project. The design scope covered construction drawings and workshop drawings and involved engineers in the fields of mineral processing, water supply and drainage, power, civil engineering and general layout.

The Malaysia 700t/d gold mineral processing plant was a symbol of Chine-Malaysia cooperation in the mining industry under the policy of The Belt and Road. The raw ore consisted of pyrite, quartz, calcite and mica, with gold being the valuable mineral. It had a gold grade of 4.70g/t, silver grade of 4.63g/t, iron grade of 20.10% and a sulfur grade of 20.55%.

alluvial gold, alluvial gold mining, alluvial mining for gold - xinhai

alluvial gold, alluvial gold mining, alluvial mining for gold - xinhai

The principle of Alluvial Gold mining beneficiation is to maximize the recovery rate of gold and the associated heavy minerals from gangues firstly, and then separate gold from the associated heavy minerals by joint mining solutions such as gravity separation, flotation, amalgamation, magnetic separation and electrostatic separation.

Alluvial gold processing solution mainly applies for processing alluvial gold with large volume of gangue minerals. Alluvial gold processing is a set of mining process including crushing and screening, desliming stage, separating stage, etc.

Many alluvial gold ores contain cementing mud pie and most of its particle size is over 100 mm, which will be excluded together with waste rock in the process of screening if not being crushed, thus is a loss of gold Vibrating screen and trommel are the commonly used screening equipment, which has long service life and high processing capacity.

Material less than 0.1mm almost don not contain gold in alluvial gold ore, which is known as floating gold and is difficult to be recovered in the seperating process. Moreover, the gold and sludge will be confused in the seperating process, particularly in mechanical seperating process. Therefore, in alluvial gold mining process, this kind of sludge mainly be eliminated. Popular Desliming equipment is off-the-mud bucket.

Practice has proved that gravity separation is the most effective and economical alluvial gold processing method. Due to the different size distributed among alluvial gold, different alluvial gold processing equipment has various of effective size limitations, so a reasonable alluvial gold separating process should apply several gravity separation equipment to jointly operate.

XinhaiJigtapered slide valve, which has lower failure rate of 80%, lower energy consumption and can meet different separating process, increase processing capacity by more than 35%. And its also characterized by easy operation of stroke and frequency with the use of high-tech; smaller covering space while larger handling capacity per unit area.

Xinhai improved the traditional6s concentrating table, bed-type cam lever to change the slider position on the rocker arm can adjust stroke, the leather belt of smooth motor is to adjust jig frequency. Advantages: easy stroke adjustment; smoothly bed running; compact structure; lower power consumption.

This process characterized by simple process, lower cost in equipment, easy operation, What is more, the mining process is environmental protection, the tailings can be directly discharged, which greatly reduce the overall processing plant cost in civil engineering.

alluvial gold mining method - xinhai

alluvial gold mining method - xinhai

Alluvial gold mines is various in kinds and widely distributed. According to the transport distance, the alluvial gold mines can be divided into residual placer gold, slope placer gold mine, alluvial placer gold mine, riverbed impact placer gold mine, and coastal placer gold mine. Among them, the riverbed impact placer gold mine is common. According to handling force medium, the alluvial gold mine can be divided into aeolian placer gold mine, ice-forming placer gold mine, and aquatic placer gold mine. According to the era of transport, the alluvial gold mine can be divided into deep placer gold deposit, terraced placer gold mine, and river beach placer gold mine. There is very low content gold in the alluvial gold mine. It needs all kinds of gold processing equipment for processing and enrichment. The gravity separation has the characteristic of high-efficiency, energy-saving and environment-friendly. It is the main alluvial gold mining method. Generally, gold and various kinds of associated heavy minerals can be recovered through gravity separation. Then gold and associated heavy sand minerals can be separated through gravity separation, flotation, magnetic separation, and electrostatic beneficiation.

The aim of washing is to separate the grail, sand and grain oil in alluvial gold mines. It also washes the fine mud and the gold particles. Generally speaking, there are a lot of weathered clay in alluvial gold mines. Gold particles are packed in clay, forming cement block or mud body. If the cement block or mud body is not broken, it will be discharged with waste stones in screening, which reduces the recovery rate of the alluvial gold mine and causes the loss of gold.

Washing is to dissolve mineral sand through mechanical agitation from cement block or mud body. It separates gravel, sand and clay, and washes the clay and gold particles attached to the gravel. Washing operation includes shattering, screening and desliming. It is an important operation of the alluvial gold mining method. It can improve the processing of alluvial gold mine, and advantage for improving the recovery rate of alluvial gold.

Generally, the large block screening operation is mainly to screen the alluvial mine after washing. Large grails are discharged to improve the efficiency of gold processing equipment. 20%~40% waste stones can be discharged in screening operation.

According to granularity composition parameters of gold in raw ore, the screen sieve pore is determined. At present, the sieve pore for alluvial gold mines is usually 10~20mm. If the fixed chute is used for coarse separation, the sieve pore can be larger, but smaller than 60mm. In fixed concentrator, vibrating screen and grid screen can be used as screening equipment. Cylindrial screen is commonly used in gold dredgers. Wet screen is most used for alluvial gold mining methods. Sieve flush can break the slime and improve the screening efficiency of alluvial gold mine.

Gravity separation is mainly used in alluvial gold mining method. On the one hand, the alluvial gold has a large proportion and coarse in particle size of 0.074~2mm. On the other hand, gravity separation is economic and simple. It is also the key operation of the alluvial gold mining method. Most waste stones can be discharged in this period, and coarse gold concentrate can be recovered.

According to different types of alluvial gold, the concentrating operation uses gravity separating equipment, amalgamation equipment and so on, to improve the gold grade. Concentrating is an essential part in the alluvial gold mining method. Concentrating equipment should be paid attention to, to avoid the gold loss in concentrating. The recovery rate of gold and other heavy sand minerals is highly improved realizing comprehensive recycling and mineral resource utilization.

In actual production, the alluvial gold mining method and processing equipment should be determined according to the ore characteristics. The same method and equipment is not suitable for all the alluvial gold processing plant. Therefore, it is recommended to choose a qualified equipment manufacturer. Carrying out mineral processing experiment,

mining process, gold recovery process, process plant design, mineral solution - xinhai

mining process, gold recovery process, process plant design, mineral solution - xinhai

Xinhai Mechanical Design Institute focuses on the design and research of mineral processing equipment for over 20 years, who has required numerous technical achievements in the ball mill, the combination of KYF flotation cell and XCF flotation cell and updated high-efficiency thickener.

Recently, Xinhai Mining with mineral processing EPC+M+O service successively appeared the 4th China Copper Industry Science and Technology Development Exchange Conference and China Cyanide Tailing Dealing and Comprehensive Utilization Technology Exchange Conference. Xinhai discussed the technology development result with peers and constantly increasing industry influence.

China's potassium feldspar rich resources are few, and often coexist with other impurity minerals, especially a small number of impurities such as iron and titanium, which affect its quality and application, so it needs impurity removal. At present, the main impurity removal methods of potassium feldspar are magnetic separation, flotation separation, acid leaching process and combined process. Specifically, the appropriate impurity removal process should be selected according to the occurrence state of impurity minerals and the embedded particle size.

seven tricks to improve the fluorite flotation index: ensure proper grinding fineness, properly raise the slurry temperature, correct selection of flotation reagents and dosage, maintain proper slurry level, selecting a reasonable slurry pH, pre-softened water and optimize flotation process.

At present, the common tin ore processing processes mainly include gravity separation, flotation and magnetic separation. Below, we will mainly explain to you the different tin ore processing processes and equipment used.

The tailings dry discharge is a new tailings processing process gradually emerging at home and abroad, that is, after the tailings slurry is concentrated in multiple stages, and then processed by efficient dewatering equipment such as dewatering vibrating screen to form slag with small water content, easy to precipitate, solidify and be stacked. The slag can be transported to a fixed location for dry storage.

Invariouskindsofgold ores,the Carlin-type gold oreis a kind of finely disseminated gold deposit mainly produced in carbonate rocks.Thisgold ore relatively low, the metallogenic scale is large, and the gold particle size is fine. The main gangue minerals include quartz, calcite, barite, kaolinite, etc., which are difficult to recycle gold mines. The harmful elements such as arsenic and mercury may cause environmental pollution if not handled properly. Next, lets take a look at the processing difficulties of Carlin-type gold mines and theirprocessing technology.

Hematite, a relatively large mineral resource of weakly magnetic iron ore resources, mainly covers hematite, pseudo-iron ore, specularite, and a small amount of siderite and limonite, etc. Among hematite processing methods, flotation separation is one of the common processing methods. Compared to other processing methods, flotation can effectively extract high-quality iron ore from fine-grained materials, thus providing high-quality raw materials for steel production.

Usually, according to different ore properties, different tailings treatment and recovery processes will be used for iron tailings re-processing. In general, iron tailings re-processing mainly includes the process of magnetic separation, gravity separation, flotation and combined separation methods.

With the increasing of copper mining resources, copper tailings emissions increases as well. Copper tailing is made up of the fine sands from copper ore crushing and concentration. There are an amount of metal and nonmetal minerals to be reprocessed. Suitable reprocessing technology can recycle them. It has an important meaning to the comprehensive utilization of copper tailings. In actual production, different types and characteristics of copper tailings need different mineral processing methods. In this passage, we will introduce you the copper tailing physical and chemical properties, and two types of common copper reprocessing methods: vulcanization flotation and leaching.

The flotation used in the silica sand processing can not only remove the mica, feldspar minerals, but also folate the phosphorus, iron and other minerals, and remove the broken and grinding mixed with secondary pig iron.

The pre-beneficiation of iron ore is the iron beneficiation between suitable crushing and grinding with responsible equipment according to different ore characteristics. It is to discard part of tailings in coarse conditions.

The tailings dry stacking is a new tailings processing method in recent years. The tailings dry stacking technology can relieve the capacity pressure of tailings pond storage, reduce the safety hidden danger of tailings pond and increase the means of tailings reprocessing, which is a kind of tailings processing technology to realize the green mine.

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