Canada is the second largest country over the world. The territorial area of Canada is 9.98 million square kilometers. Vast geographical makes Canada with abundant mineral resources. There are more than 60 kinds of minerals in Canada, the number of mineral species ranking first in the world. The productions of nickel, zinc, platinum, and asbestos rank first in the world, while uranium, gold, cadmium, bismuth, gypsums rank second. And copper, iron, lead, potassium, sulfur, cobalt, chromium, molybdenum production is also quite rich.
Canada's basic national conditions can be summarized in three sizes: sparsely populated, developed industrial, rich resources. All of them are the favorable factors for Canadian mining industry. Therefore, the Canadian mining industry is well developed, becoming the world's third major mining country. Mining industry is also one of the pillar industries for the national economy in Canada, which plays an important role in national and regional economy. Canadian mineral productions are mainly used for export. In 2008, mineral exports accounted for 19% of total Canadian exports. The major export mineral products include aluminum, nickel, copper, gold, uranium, coal, potash, zinc, diamonds, iron, and iron ore.
Rich mineral resource need to be mined, so a lot of ore crushing plants were built in Canada. In general, the processing flows of them are similar. We usually need jaw crusher, impact crusher, cone crusher, and some auxiliary equipment, such as belt convey, vibrating feeder, and vibrating screen. Using all of the above equipment to form a complete stone crushing plant can get a good performance.
First of all, we need to send the large stone to jaw crusher for primary crushing by vibrating feeder. And then, impact crusher is needed to process the crushed materials into smaller pieces. At last, transport the materials which meet the required size to cone crusher for fine crushing. Through the above processes, you can get even grain.
In Canada, ore crushing plant basically using automated production. In the ore processing line, various auxiliary equipment show significant roles. Among them, the belt conveyor is a connection link among the various production machines, but also to achieve continuity and automation of production processes. Vibrating feeder is used to ensure the material can be evenly and continuously fed to the specified device, and it can screen the material roughly. The vibrating screen can classify the materials into different sizes, to meet different production needs.
In May 2009, Canada officially launched the "green mining" Initiative (GMI), to improve the mining environment. They want to create opportunities to promote green technology for Canadian mining companies through the establishment of full life-cycle approach. The initiative is also an important event in Canadian mining industry. This initiative put higher requirements for the mining and processing equipment. It required that the devices should be more efficient, low-power, environmentally friendly. In order to meet this market demand, our company responded quickly and made great improvements of the original equipment. Our experienced engineers designed the machine in sealed structure. In this way, they not only reduce dust pollution and provide users with a clean production environment, but also in response to the "green mining" initiative, and reach the national regulations.
Reduce energy consumption is one of the important ways to low the cost of production for ore crushing companies. Our engineers are continually improving the equipments technologyto improve the efficiency and reduce power consumption greatly. These improvements have been widely welcomed by Canadian users. Every year, we have a variety of ore crushing, grinding, sand making equipment and auxiliary equipment to be exported to Canada. Excellent and stable performances make our products get a good reputation in Canada.
Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimization, filler content control, gradation control, water content control, and environmental protection into a single syst
There are numerous mineral resources in India. According to survey, India had the largest deposits of mica in the world. Actually, India is one of the leading suppliers of mica to the world. India produces about 60% of the worlds total mica production. About 95% of Indias mica is distributed in just three states of Jharkhand, Andhra Pradesh and Rajasthan.
Mica has wide applications. Small quantity of mica mineral resource in India is also used for the production of mica powder and mica bricks. Mica powder is used in the production of rubber goods and paints. Mica bricks are used as insulating materials in steel and thermal power plants and petroleum refineries. Interestingly, the production of mica depends on foreign demand to a great extent. Huge amount of mica in India is exported. Countries such as United States, Japan and United Kingdom are the major buyers of mica.
There are more than 30 working mica mines in India and majority of them are located inAndhra Pradesh. All the mica mines were extracted first as prospecting pits. Overhand cut-and-fill method of mining withflat-back and waste-fill methods are practiced inmica mines.
Pegmatite isexploited by strikingvertical or inclined shaft. As mica is restricted to hanging wall and sometimesto core zone, driving is done only inthese areas. The mica mines aredeveloped to maximum 100 m depths. Non-coringextension drilling is being operated forunderground drainages.
Mining method has been developed and improved in some of the mines in recent years. The oldmethod was tunneling, but now some of the oldmines have been made into open quarries. SBM provides complete series of high performance mica mining plant in India.
In mica mining process, several different types of machines are involved such as drilling and blasting machine, extraction plant, quarry crusher equipment, grinding mill,screening machine etc. SBM is specialized in providing sustainable technology and professional service for mining equipment. We newly developed whole range of mica mining production line for sale, including crushing machine and grinding plant. If you want to find low price and high quality Indian mica mining plant, please contact us.
After extracted from the quarry, mica will be sent to processing plant, which begins with crushing and grinding operation.SBM developed all types of mica crusher and grinding plant for mining operation in India.
There are mobile crusher plants for mica mining.It can be equipped with jaw crusher, impact crusher, cone crusher etc. With new features, the mobile crusher machine provides a really user-friendly, versatile mobile unit. Now, one track-mounted crushing plant can offer 100% crushing capacity for both hard rock and recycling materials that require high capacities.
Grinding is after crushing operation in mica mining process. It is an essential step inmica processing. Different types of mill are applied in milling operation, such as ball mills, vertical roller mill, Raymond mill, ultrafine mill etc.
Development of ever larger ball mill grinding units has helped in the processing of lower grade ores and the simplification of the crushing section, elimination of secondary and tertiary crushing and of the milling section, in terms of the numbers of ball and rod mills used previously. If you are interested, please contact us, we will customize cost-effective mining solution.
Sandvik Iron Ore Crushing Plant2 Jaw Crusher Sandvik CJ613, 700 t/h Weight 41,500 kg (91,500 lb) Feed opening 3780 mm x 2470 mm Feed size 1,070 mm (42 in.) Capacity (by hour) 330 - 960 mtph Motor power 160 kW (250 hp) 50 Hz Closed side setting (CSS) range 125 - 300 mm (4.9 - 11.8 in.)2 Cone Crusher Sandvik CS440, 700 t/h Nominal capacity 245 - 503 mtph Max. feed size 335 - 500 mm Motor power 220 kW (295 hp) 50Hz Closed side setting (CSS) range 29 - 54 mm Weight 19,300 kg (42,500 lb)3 Impact Crusher VSI CV229, 1000 t/h Feed size 55 mm (2.2 in) Capacity 445-600 tph Length 4.36 m (171 in) Width 2.23 m (88 in) Height 3.07 m (120 in) Weight 14,826 kg (32,686 lb) Rotor rpm range 50 Hz 1,401-1,677 Motor Power 2 250 kW 50 Hz5 Screens Sandvik LF2460, 800 t/h Weight 6,580 kg Screen width 2.4 m Screen length 6 m Drive power 2x15 kw 10 Magnetic Drum DF A25/10 Eriez Magnetic, 200 t/h02 Electromagnetic Pulley Eriez Magnetic, 400 t/h33 Conveyor Belts, 48" - 24", 1000 - 200 t/h17 Pan Feeder Sandvik SP1020/SP1623/SP1323, 600-800 t/h9 Bin 30m3/20m3/35m3
After crushing, grinding, magnetic separation, flotation, and gravity separation, etc., iron is gradually selected from the natural iron ore. The beneficiation process should be as efficient and simple as possible, such as the development of energy-saving equipment, and the best possible results with the most suitable process. In the iron ore beneficiation factory, the equipment investment, production cost, power consumption and steel consumption of crushing and grinding operations often account for the largest proportion. Therefore, the calculation and selection of crushing and grinding equipment and the quality of operation management are to a large extent determine the economic benefits of the beneficiation factory.
There are many types of iron ore, but mainly magnetite (Fe3O4) and hematite (Fe2O3) are used for iron production because magnetite and hematite have higher content of iron and easy to be upgraded to high grade for steel factories.
Due to the deformation of the geological properties, there would be some changes of the characteristics of the raw ore and sometimes magnetite, hematite, limonite as well as other types iron ore and veins are in symbiosis form. So mineralogy study on the forms, characteristics as well as liberation size are necessary before getting into the study of beneficiation technology.
1. Magnetite ore stage grinding-magnetic separation process The stage grinding-magnetic separation process mainly utilizes the characteristics of magnetite that can be enriched under coarse grinding conditions, and at the same time, it can discharge the characteristics of single gangue, reducing the amount of grinding in the next stage. In the process of continuous development and improvement, the process adopts high-efficiency magnetic separation equipment to achieve energy saving and consumption reduction. At present, almost all magnetic separation plants in China use a large-diameter (medium 1 050 mm, medium 1 200 mm, medium 1 500 mm, etc.) permanent magnet magnetic separator to carry out the stage tailing removing process after one stage grinding. The characteristic of permanent magnet large-diameter magnetic separator is that it can effectively separate 3~0mm or 6~0mm, or even 10-0mm coarse-grained magnetite ore, and the yield of removed tails is generally 30.00%~50.00%. The grade is below 8.00%, which creates good conditions for the magnetic separation plant to save energy and increase production.
2.Magnetic separation-fine screen process Gangue conjoined bodies such as magnetite and quartz can be enriched when the particle size and magnetic properties reach a certain range. However, it is easy to form a coarse concatenated mixture in the iron concentrate, which reduces the grade of the iron concentrate. This kind of concentrate is sieved by a fine sieve with corresponding sieve holes, and high-quality iron concentrate can be obtained under the sieve.
There are two methods for gravity separation of hematite. One is coarse-grained gravity separation. The geological grade of the ore deposit is relatively high (about 50%), but the ore body is thinner or has more interlayers. The waste rock is mixed in during mining to dilute the ore. For this kind of ore, only crushing and no-grinding can be used so coarse-grained tailings are discarded through re-election to recover the geological grade.
The other one is fine-grain gravity separation, which mostly deals with the hematite with finer grain size and high magnetic content. After crushing, the ore is ground to separate the mineral monomers, and the fine-grained high-grade concentrate is obtained by gravity separation. However, since most of the weak magnetic iron ore concentrates with strong magnetic separation are not high in grade, and the unit processing capacity of the gravity separation process is relatively low, the combined process of strong magnetic separation and gravity separation is often used, that is, the strong magnetic separation process is used to discard a large amount of unqualified tailings, and then use the gravity separation process to further process the strong magnetic concentrate to improve the concentrate grade.
Due to the complexity, large-scale mixed iron ore and hematite ore adopt stage grinding or continuous grinding, coarse subdivision separation, gravity separation-weak magnetic separation-high gradient magnetic separation-anion reverse flotation process. The characteristics of such process are as follows:
(1) Coarse subdivision separation: For the coarse part, use gravity separation to take out most of the coarse-grained iron concentrate after a stage of grinding. The SLon type high gradient medium magnetic machine removes part of the tailings; the fine part uses the SLon type high gradient strong magnetic separator to further remove the tailings and mud to create good operating conditions for reverse flotation. Due to the superior performance of the SLon-type high-gradient magnetic separator, a higher recovery rate in the whole process is ensured, and the reverse flotation guarantees a higher fine-grained concentrate grade.
(2) A reasonable process for narrow-level selection is realized. In the process of mineral separation, the degree of separation of minerals is not only related to the characteristics of the mineral itself, but also to the specific surface area of the mineral particles. This effect is more prominent in the flotation process. Because in the flotation process, the minimum value of the force between the flotation agent and the mineral and the agent and the bubble is related to the specific surface area of the mineral, and the ratio of the agent to the mineral action area. This makes the factors double affecting the floatability of minerals easily causing minerals with a large specific surface area and relatively difficult to float and minerals with a small specific surface area and relatively easy to float have relatively consistent floatability, and sometimes the former has even better floatability. The realization of the narrow-level beneficiation process can prevent the occurrence of the above-mentioned phenomenon that easily leads to the chaos of the flotation process to a large extent, and improve the beneficiation efficiency.
(3) The combined application of high-gradient strong magnetic separation and anion reverse flotation process achieves the best combination of processes. At present, the weak magnetic iron ore beneficiation plants in China all adopt high-gradient strong magnetic separation-anion reverse flotation process in their technological process. This combination is particularly effective in the beneficiation of weak magnetic iron ore. For high-gradient strong magnetic separation, the effect of improving the grade of concentrate is not obvious. However, it is very effective to rely on high-gradient and strong magnetic separation to provide ideal raw materials for reverse flotation. At the same time, anion reverse flotation is affected by its own process characteristics and is particularly effective for the separation of fine-grained and relatively high-grade materials. The advantages of high-gradient strong magnetic separation and anion reverse flotation technology complement each other, and realize the delicate combination of the beneficiation process.
The key technology innovation of the integrated dry grinding and magnetic separation system is to "replace ball mill grinding with HPGR grinding", and the target is to reduce the cost of ball mill grinding and wet magnetic separation.
HPGRs orhigh-pressure grinding rollshave made broad advances into mining industries. The technology is now widely viewed as a primary milling alternative, and there are several large installations commissioned in recent years. After these developments, anHPGRsbased circuit configuration would often be the base case for certain ore types, such as very hard, abrasive ores.
The wear on a rolls surface is a function of the ores abrasivity. Increasing roll speed or pressure increases wear with a given material. Studs allowing the formation of an autogenous wear layer, edge blocks, and cheek plates. Development in these areas continues, with examples including profiling of stud hardness to minimize the bathtub effect (wear of the center of the rolls more rapidly than the outer areas), low-profile edge blocks for installation on worn tires, and improvements in both design and wear materials for cheek plates.
With Strip Surface, HPGRs improve observed downstream comminution efficiency. This is attributable to both increased fines generation, but also due to what appears to be weakening of the ore which many researchers attribute to micro-cracking.
As we tested , the average yield of 3mm-0 and 0.15mm-0 size fraction with Strip Surface was 78.3% and 46.2%, comparatively, the average yield of 3mm-0 and 0.3mm-0 with studs surface was 58.36% and 21.7%.
These intelligently engineered units are ideal for classifying coarser cuts ranging from 50 to 200 mesh. The feed material is dropped into the top of the classifier. It falls into a continuous feed curtain in front of the vanes, passing through low velocity air entering the side of the unit. The air flow direction is changed by the vanes from horizontal to angularly upward, resulting in separation and classification of the particulate. Coarse particles dropps directly to the product and fine particles are efficiently discharged through a valve beneath the unit. The micro fines are conveyed by air to a fabric filter for final recovery.
Air Magnetic Separation Cluster is a special equipment developed for dry magnetic separation of fine size (-3mm) and micro fine size(-0.1mm) magnetite. The air magnetic separation system can be combined according to the characteristic of magnetic minerals to achieve effective recovery of magnetite.
After rough grinding, adopt appropriate separation method, discard part of tailings and sort out part of qualified concentrate, and re-grind and re-separate the middling, is called stage grinding and stage separation process.
According to the characteristics of the raw ore, the use of stage grinding and stage separation technology is an effective measure for energy conservation in iron ore concentrators. At the coarser one-stage grinding fineness, high-efficiency beneficiation equipment is used to advance the tailings, which greatly reduces the processing volume of the second-stage grinding.
If the crystal grain size is relatively coarse, the stage grinding, stage magnetic separation-fine sieve self-circulation process is adopted. Generally, the product on the fine sieve is given to the second stage grinding and re-grinding. The process flow is relatively simple.
If the crystal grain size is too fine, the process of stage grinding, stage magnetic separation and fine sieve regrind is adopted. This process is the third stage of grinding and fine grinding after the products on the first and second stages of fine sieve are concentrated and magnetically separated. Then it is processed by magnetic separation and fine sieve, the process is relatively complicated.
At present, the operation of magnetic separation (including weak magnetic separation and strong magnetic separation) is one of the effective means of throwing tails in advance; anion reverse flotation and cation reverse flotation are one of the effective means to improve the grade of iron ore.
In particular, in the process of beneficiation, both of them basically take the selected feed minerals containing less gangue minerals as the sorting object, and both use the biggest difference in mineral selectivity, which makes the two in the whole process both play a good role in the process.
Based on the iron ore processing experience and necessary processing tests, Prominer can supply complete processing plant combined with various processing technologies, such as gravity separation, magnetic separation, flotation, etc., to improve the grade of TFe of the concentrate and get the best yield. Magnetic separation is commonly used for magnetite. Gravity separation is commonly used for hematite. Flotation is mainly used to process limonite and other kinds of iron ores
Through detailed mineralogy study and lab processing test, a most suitable processing plant parameters will be acquired. Based on those parameters Prominer can design a processing plant for mine owners and supply EPC services till the plant operating.
Prominer has been devoted to mineral processing industry for decades and specializes in mineral upgrading and deep processing. With expertise in the fields of mineral project development, mining, test study, engineering, technological processing.