Sand DryerBrief Description: Sand Dryeris widely used in construction materials, ore dressing, metallurgy, chemical industry, cement industry, etc. Sand Dryer are used for drying all kinds of sand such as river sand, yellow sand, silica sand, quartz sand, pomegranate sand, etc. Sand Dryer mainly consist of rotary drum, carrier roller, lifting boards, hot air furnace, electric control box, etc. Sand Dryer Features: New type rotary drum dryer, the flights structure in the cylinder of sand dryer is more advanced ; Inner temperature is 450-700, discharging temperature <= 60 , can send into storage room directly, and no need cool device; Made of wear resistant manganese plate, 3 to 4 times more hardwearing than ordinary steel plate ; 1/3 of the traditional drum dryer's coal consumption, electricity power saving 40%,standard coal consumption per tondried sand< 16 kg. Wet Sand Input Dried Sand Output Sand Dryer Workflow: Belt Conveyor or bucket elevator transports the wet sand into the hopper which is on the top of sand dryer. Hot air furnace supply the hot air for the sand dryer. Inside the sand dryer's cylinder, there are many flights, and these flights mix the wet sand and hot air sufficiently. The humidity in the wet sand is heated and evaporated into water vapour. At the end of the sand drying plant, there is one high pressure draft fan. Under the function of draft fan, the water vapour goes out of sand dryer in time. During the sand drying process, there is some dust mixed with the water vapour. In the cyclone separator, the dust is separated from the water vapour, and falls down. The dried sand goes out of the sand dryer machine from the outlet as product. Finally we can use one belt conveyor or bucket elevator to send the dry sand into silo or trucks. Fuel for Sand Dryer: Fuel for the heat source can be wood pellets, waste wood, coal, diesel, natural gas, biomass fuel, etc. The users can choose the most suitable fuel according the actual situation such as fuel available, fuel cost, local environment laws, etc. Partial Technical Data of Sand Dryer Machine: Model Processing Capacity Input Moisture Output Moisture MainMotor forSandDryer Coal CalorificValue Feedinlet Temperature 1.5X14M 10-12 17-23% <10% 15 >5500KCAL/KG 70050 1.8X14M 15-18 17-23% <10% 18.5 >5500KCAL/KG 70050 2.0X16M 20-25 17-23% <10% 18.5 >5500KCAL/KG 70050 2.2X18M 25-30 17-23% <10% 22 >5500KCAL/KG 70050 Notice: Any change ofSandDryertechnical data shall not be advised additionally. Sunco Machinerycan design and supply theSand Dryersystem according to the following information specially : 01. Initial moisture content %of wet sand ? 02. Final output moisture content (%) of dry sandneeded ? 03. Input Capacity (ton per hour ) needed ? 04. Prefered fuel such as coal, waste wood, diesel, or natural gas, etc ? 05. Other special requirements if have ? For detail and price of SandDryer, please refer to: Email:[email protected] Mobile / WhatsApp: Video:https://www.youtube.com/watch?v=hRbrEjSZFaA https://www.youtube.com/watch?v=IMF2nE7eAes https://www.youtube.com/watch?v=u1dgBh-JktI https://www.youtube.com/watch?v=eQ-4iNnxekw https://www.youtube.com/watch?v=4RrghfR9PV4 https://www.youtube.com/watch?v=3OkF8nPLuoQ
Sand Dryer are used for drying all kinds of sand such as river sand, yellow sand, silica sand, quartz sand, pomegranate sand, etc. Sand Dryer mainly consist of rotary drum, carrier roller, lifting boards, hot air furnace, electric control box, etc.
Fuel for the heat source can be wood pellets, waste wood, coal, diesel, natural gas, biomass fuel, etc. The users can choose the most suitable fuel according the actual situation such as fuel available, fuel cost, local environment laws, etc.
Model Processing Capacity Input Moisture Output Moisture MainMotor forSandDryer Coal CalorificValue Feedinlet Temperature 1.5X14M 10-12 17-23% <10% 15 >5500KCAL/KG 70050 1.8X14M 15-18 17-23% <10% 18.5 >5500KCAL/KG 70050 2.0X16M 20-25 17-23% <10% 18.5 >5500KCAL/KG 70050 2.2X18M 25-30 17-23% <10% 22 >5500KCAL/KG 70050
DingliSand Drying Equipmentis a three-layer sand dryer and three-return sand dryer. It is developed on the basis of a single-cylinder dryer. It is industrially good for drying materials with good fluidity. Selection, according to the requirements of different industries for the final moisture content of the dried material, the moisture content of the dried material can reach below the moisture required by the customer. At present, the three-cylinder dryer of Dinglihas a mature technology. After the inspection of materials such as river sand, river sand, sea sand, yellow sand, emery, garnet sand, quartz sand, foundry sand, slag, and other materials, the material drying effect is good.
DingliSand Dryerequipment is currently designed and manufactured according to customer needs, applying a new drying process. DingliSand Dryer is directly supplied by the manufacturer, and customers can enjoy the factory price. Welcome to your online consultation.
Sunco Machinery Small Sand Dryer Machine was specially designed for the small scale sand manufacturers for drying river sand,quartz sandin the market. Small sand dryer is the main sand drying equipments for the small sand manufacturers. As the development of the market, more and more dry sand is needed, but the traditional sand dryer can not meet the market demand as the low efficiency, high energy consumption, etc. As a result, the upgrading of small sand dryer equipment is very important, can truly occupy a favorable competitive advantage in thew market. According to the change of market demand, Sunco Machinery developed one new typesmall Sand Dryer Machine which is also calledthree drum sand rotary dryer, and it can has 3-5t/hcapacity, and it perfectly meets the demand of the smallsand manufacturers. For small sand production factory, due to the limitation of their sites and financial strength, or the local demand requirements, small sand dryer can meet the needs of their own choice. Sunco Machinery sand dryer engineer also advises users must choose the most suitable sand dryer machine according to the actual situation, rather than blindly selecting which leads to choose too large or too small model, and cause shortage or surplus production, which will reduce the user's competitive position in the market. In order to improve sand dryer manufacturers' economic benefits,and lower the production cost, the improvement of small sand dryer has the following characteristics: Firstly, shorten the length to 1/4 of the traditional sand dryer. Thus, the small sand dryer covers less area, save land costs, more centralized production. Secondly, adjust the internal structure, adopt high efficient modular structure of the three-cylinder dryer, fully improve the efficiency of the exchange of heat and sand, reduce the fuel consumption, save a large amount of fuel cost and manpower cost. Thirdly, whole structure also simplifies the drying process, and the installation, maintenance and adjustment are very convenient , greatly improves the efficiency of small sand dryer machine. For more details of small sanddryer, please feel free to contact us at email:[email protected]
Sunco Machinery Small Sand Dryer Machine was specially designed for the small scale sand manufacturers for drying river sand,quartz sandin the market. Small sand dryer is the main sand drying equipments for the small sand manufacturers. As the development of the market, more and more dry sand is needed, but the traditional sand dryer can not meet the market demand as the low efficiency, high energy consumption, etc. As a result, the upgrading of small sand dryer equipment is very important, can truly occupy a favorable competitive advantage in thew market.
According to the change of market demand, Sunco Machinery developed one new typesmall Sand Dryer Machine which is also calledthree drum sand rotary dryer, and it can has 3-5t/hcapacity, and it perfectly meets the demand of the smallsand manufacturers.
For small sand production factory, due to the limitation of their sites and financial strength, or the local demand requirements, small sand dryer can meet the needs of their own choice. Sunco Machinery sand dryer engineer also advises users must choose the most suitable sand dryer machine according to the actual situation, rather than blindly selecting which leads to choose too large or too small model, and cause shortage or surplus production, which will reduce the user's competitive position in the market.
Secondly, adjust the internal structure, adopt high efficient modular structure of the three-cylinder dryer, fully improve the efficiency of the exchange of heat and sand, reduce the fuel consumption, save a large amount of fuel cost and manpower cost.
Based on single pass drum dryer, Baichy Machinery develop triple pass drum dryer to take drum drying technology a step further. Triple pass rotary dryer improves the performance in operation cost, service life, energy efficiency, product consistency. The triple pass rotary drum dryer is used to dry river sand, artificial sand, silica sand, yellow sand, mineral sand, mineral powder, slag, coal ash, coal slag, etc.
Our client has a requirement to dry silica sand with unsure capacity. After more discussion, we suggest to use triple pass rotary dryer as a first stage investment. In the condition of same capacity, triple pass rotary dryer has advantages of smaller footprint and cheaper price. We provide professional technical support and a detailed equipment list for the complete sand drying system. Finally client chose Baichy Machinery as his supplier. The triple pass rotary dryer is loaded into container to Client site on time.
As three passes are concentric and interlocked, full-length drums maximize the effective length and residence time in a much smaller floor area compared with single pass dryer. Instead of gear driving or chain driving, triple pass drum dryer is driven by the rollers. Smooth transmission reduces abrasion and extends service life. As a result, the three drum drying machine is an alternative to traditional drying equipment. Welcome to enquiry us for more details.
Silica sand low in iron is much in demand for glass, ceramic and pottery use, and for many of these applications clean, white sand is desired. Impurities such as clay slime, iron stain, and heavy minerals including iron oxides, garnet, chromite, zircon, and other accessory minerals must not be present. Chromium, for example, must not be present, even in extremely small amounts, in order for the sand to be acceptable to certain markets. Feldspars and mica are also objectionable. Generally, iron content must be reduced to 0.030% Fe2O3 or less.
Silica sand for making glass, pottery and ceramics must meet rigid specifications and generally standard washing schemes are inadequate for meeting these requirements. Sand for the glass industry must contain not more than 0.03% Fe2O3. Concentrating tables will remove free iron particles but iron stained and middling particles escape gravity methods. Flotation has been very successfully applied in the industry for making very low iron glass sand suitable even for optical requirements.Sub-A Flotation Machines are extensively used in this industry for they give the selectivity desired and are constructed to withstand the corrosive pulp conditions normally encountered (acid circuits) and also the abrasive action of the coarse, granular, slime free washed sand.
The flowsheet illustrates the more common methods of sand beneficiation. Silica may be obtained from sandstone, dry sand deposits and wet sand deposits. Special materials handling methods are applicable in each case.
The silica bearing sandstone must be mined or quarried much in the manner for handling hard rock. The mined ore is reduced by a Jaw Crusher to about 1 size for the average small tonnage operation. For larger scale operations two-stage crushing is advisable.
The crushed ore is reduced to natural sand grain size by Rod Milling. Generally, one pass treatment through the Rod Mill is sufficient. Grinding is done wet at dilutions in excess of normal grinding practice. A Spiral Screen fitted to the mill discharge removes the plus 20 mesh oversize which either goes to waste or is conveyed back to the mill feed for retreatment.
Sand from such deposits is generally loaded into trucks and transported dry to the mill receiving bin. It is then fed on to a vibrating screen with sufficient water to wash the sand through the 20 mesh stainless screen cloth. Water sprays further wash the oversize which goes to waste or for other use. The minus 20 mesh is the product going to further treatment.
The sand and water slurry for one of the three fore-mentioned methods is classified or dewatered. This may be conveniently done by cyclones or by mechanical dewatering classifiers such as the drag, screw, or rake classifiers.
From classification the sand, at 70 to 75% solids, is introduced into a Attrition Scrubber for removal of surface stain from the sand grains. This is done by actual rubbing of the wet sand grains, one against another, in an intensely agitated high density pulp. Most of the work is done among the sand grains not against the rotating propellers.
For this service rubber covered turbine type propellers of special design and pitch are used. Peripheral speed is relatively low, but it is necessary to introduce sufficient power to keep the entire mass in violent movement without any lost motion or splash. The degree of surface filming and iron oxide stain will determine the retention time required in the Scrubber.
The scrubbed sand from the Attrition Machine is diluted with water to 25-30% solids and pumped to a second set of cyclones for further desliming and removal of slimes released in the scrubber. In some cases the sand at this point is down to the required iron oxide specifications by scrubbing only. In this case, the cyclone or classifier sand product becomes final product.
Deslimed sand containing mica, feldspar, and iron bearing heavy minerals can be successfully cleaned to specifications by Sub-A Flotation. Generally this is done in an acid pulp circuit. Conditioning with H2SO4 and iron promoting reagents is most effective at high density, 70-75% solids. To minimize conditioning and assure proper reagentizing a two-stage Heavy Duty Open Conditioner with Rubber Covered Turbine Propellers is used. This unit has two tanks and mechanisms driven from one motor.
The conditioned pulp is diluted with water to 25-30% solids and fed to a Sub-A Flotation Machine especially designed for handling the abrasive, slime free sand. Acid proof construction in most cases is necessary as the pulps may be corrosive from the presence of sulfuric acid. A pH of 2.5-3.0 is common. Wood construction with molded rubber and 304 or 316 stainless steel are the usual materials of construction. In the flotation step the impurity minerals are floated off in a froth product which is diverted to waste. The clean, contaminent-free silica sand discharges from the end of the machine.
The flotation tailing product at 25 to 30% solids contains the clean silica sand. A SRL Pump delivers it to a Dewatering Classifier for final dewatering. A mechanical classifier is generally preferable for this step as the sand can be dewatered down to 15 to 20% moisture content for belt conveying to stock pile or drainage bins. In some cases the sand is pumped directly to drainage bins but in such cases it would be preferable to place a cyclone in the circuit to eliminate the bulk of the water. Sand filters of top feed or horizontal pan design may also be used for more complete water removal on a continuous basis.
Dry grinding to minus 100 or minus 200 mesh is done in Mills with silica or ceramic lining and using flint pebbles or high density ceramic or porcelain balls. This avoids any iron contamination from the grinding media.
In some cases it may be necessary to place high intensity magnetic separators in the circuit ahead of the grinding mill to remove last traces of iron which may escape removal in the wet treatment scrubbing and flotation steps. Iron scale and foreign iron particles are also removed by the magnetic separator.
In general most silica sands can be beneficiated to acceptable specifications by the flowsheet illustrated. Reagent cost for flotation is low, being in the order of 5 to 10 cents per ton of sand treated. If feldspars and mica must also be removed, reagent costs may approach a maximum of 50 cents per ton.
Laboratory test work is advisable to determine the exact treatment steps necessary. Often, attrition scrubbing and desliming will produce very low iron silica sand suitable for the glass trade. Complete batch and pilot plant test facilities are available to test your sand and determine the exact size of equipment required and the most economical reagent combinations.
Silica sand for making glass, pottery and ceramics must meet rigid specifications and generally standard washing schemes are inadequate for meeting these requirements. Sand for the glass industry must contain not more than 0.03% Fe2O3. Concentrating tables will remove free iron particles but iron stained and middling particles escape gravity methods. Flotation has been very successfully applied in the industry for making very low iron glass sand suitable even for optical requirements.
Sub-A Flotation Machines are extensively used in this industry for they give the selectivity desired and are constructed to withstand the corrosive pulp conditions normally encountered (acid circuits) and also the abrasive action of the coarse, granular, slime free washed sand.
The flowsheet illustrated is typical for production of glasssand by flotation. Generally large tonnages are treated, forexample, 30 to 60 tons per hour. Most sand deposits can be handled by means of a dredge and the sand pumped to the treatment plant. Sandstone deposits are also being treated and may require elaborate mining methods, aerial tramways, crushers, and wet grinding. Rod Mills with grate discharges serve for wet grinding to reduce the crushed sandstone to the particle size before the sand grains were cementedtogether in the deposit. Rod milling is replacing the older conventional grinding systems such as edge runner wet mills or Chilean type mills.
Silica sand pumped from the pit is passed over a screen, either stationary, revolving or vibrating type, to remove tramp oversize. The screen undersize is washed and dewatered generally in a spiral type classifier. Sometimes cone, centrifugal and rake type classifiers may also be used for this service. To clean the sand grains it may be necessary to thoroughly scrub the sand in a heavy-duty sand scrubber similar to the Heavy-duty Agitator used for foundry sand scrubbing. This unit is placed ahead of the washing and dewatering step when required. The overflow from the classifier containing the excess water and slimes is considered a waste product. Thickening of the wastes for water reclamation and tailings disposal in some areas may be necessary.
The washed and dewatered sand from the spiral-type classifier is conveyed to a storage bin ahead of the flotation section. It is very important to provide a steady feed to flotation as dilution, reagents and time control determines the efficiency of the process.
Feeding wet sand out of a storage bin at a uniform rate presents a materials handling problem. In some cases the sand can be uniformly fed by means of a belt or vibrating-type feeder. Vibrators on the storage bin may also be necessary to insure uniform movement of the sand to the feeder. In some cases the wet sand is removed from the bin by hydraulic means and pumped to a spiral-type classifier for further dewatering before being conveyed to the next step in the flowsheet.
Conditioning of the sand with reagents is the most critical step in the process. Generally, for greater efficiency, it is necessary to condition at maximum density. It is for this reason the sand must be delivered to the agitators or conditioners with a minimum amount of moisture. High density conditioning at 70 to 75% solids is usually necessary for efficient reagentizing of the impurity minerals so they will float readily when introduced into the flotation machine.
The Heavy-duty Duplex Open-type Conditioner previously developed for phosphate, feldspar, ilmenite, and other non-metallic mineral flotation is ideal for this application. A duplex unit is necessary to provide the proper contact time. Circular wood tanks are used to withstand the acid pulp conditions and the conditioner shafts and propellers are rubber covered for both the abrasive and corrosive action of the sand and reagents.
Reagents are added to the conditioners, part to the first and the balance to the second tank of the duplex unit, generally for flotation of impurities from silica sand. These reagents are fuel oil, sulphuric acid, pine oil, and a petroleum sulfonate. This is on the basis that the impurities are primarily oxides. If iron is present in sulphide form, then a xanthate reagent is necessary to properly activate and float it. The pulp is usually regulated with sulfuric acid to give a pH of 2.5-3.0 for best results through flotation.
A low reagent cost is necessary because of the low value of the clean sand product. It is also necessary to select a combination of reagents which will float a minimum amount of sand in the impurity product. It is desirable to keep the weight recovery in the clean sand product over 95%. Fatty acid reagents and some of the amines have a tendency to float too much of the sand along with the impurities and are therefore usually avoided.
After proper reagentizing at 70 to 75% solids the pulp is diluted to 25 to 30% solids and introduced into the flotation machine for removal of impurities in the froth product. Thepulp is acid, pH 2 .5 to 3.0 and the sand, being granular and slime free, is rapid settling so a definite handling problem is encountered through flotation.
The Sub-A Flotation Machine has been very successful for silica sand flotation because it will efficiently handle the fast settling sand and move it along from cell to cell positively. Aeration, agitation and selectivity due to the quiet upper zone can be carefully regulated to produce the desired separation. The machine is constructed with a wood tank and molded rubber wearing parts to withstand the corrosive action of the acid pulp. Molded rubber conical-type impellers are preferred for this service when handling a coarse, granular, abrasive sand.
Flotation contact time for removal of impurities is usually short. A 4, and preferably a 6 cell, machine is advisable. Cell to cell pulp level control is also desirable. A 6 cell No. 24 (43 x 43) Sub-A Flotation Machine in most cases is adequate for handling 25 to 30 tons of sand per hour. If the impurities are in sulphide form a standard machine with steel tank and molded rubber parts is adequate provided the pulp is not acid. Otherwise acid proof construction is essential.
The flotation tailing product is the clean sand discharging from the end of the flotation machine at 25 to 30% solids and must be dewatered before further processing. Dewatering can be accomplished in a dewatering classifier and then sent to storage or drying. Top feed or horizontal vacuum filters are often used to remove moisture ahead of the dryer. Dry grinding of the sand to meet market requirements for ceramic and pottery use is also a part of the flowsheet in certain cases.
This particular sand was all minus 20 mesh with only a trace minus 200 mesh and 70% plus 65 mesh. Iron impurity was present as oxide and stained silica grains. The plant which was installed as a result of this test work is consistently making over a 95% weight recovery and a product with not over 0.02% Fe2O3 which at times goes as low as 0.01% Fe2O3.
Si02, minimum..99.8 per cent Al2O3, maximum..0.1 percent Fe2O3, maximum..0.02 per cent CaO + MgO, maximum.0.1 percent For certain markets, a maximum of 0.030 per cent Fe2O3 is acceptable.
Natural silica-sand deposits generally contain impurityminerals such as clay, mica, and iron oxide and heavy iron minerals which are not sufficiently removed by washing and gravity concentration. Flotation is often used to remove these impurity minerals to meet market specifications.
Anionic-type reagents, such as fatty acids, are used to float some impurities in alkaline pulp. Cationic-type reagents such as amines or amine acetates are also used with inhibitors such as sulphuric or hydrofluoric acids to float certain impurity minerals and depress the silica.
Dry mortar production lineis a set of equipment that is used to produce dry mix mortar also known as dry premixed mortar or ready mix mortar for uses in construction and other industry. With the development of the economy and the trend for environmental protection, the demand for dry mix mortar production lines is increasing. Thats becausethe market demand for dry mortar has increased rapidly due to its outstanding advantages when compared to the mortar produced on-site.
Dry Mix Mortar is a kind of construction material. It is mainly composed of cement, sandand some other chemical additives. These ingredients are precisely weighed and evenly mixed in a set of machine dry-mixed mortar production line. The finished mixture is usually packed in bags or in bulk amounts. Dry mixed mortar can be put into use on construction sites by just adding water or other ingredients and mixing them together.
In January 2021, one of our customers from Peru ordered a set of dry mortar plant. We quickly arranged loading and sent the mortar plant to Peru. The dry mortar plant soon arrived and was put into use. In recent days, our customer send us some feedback pictures of this dry mortar mix plant. The plant works very well and our customer speak highly of it. It brings convenience to our customers construction work and helps to increase the working efficiency. The following are the pictures taken on the working site. AIMIX Dry Mortar Production Line in PeruAIMIX dry mortar production line
Dry mortar is divided into ordinary mortar and special mortar according to their application. Ordinary mortar is divided into masonry mortar, plastering mortar, and ground mortar. Special mortar is divided into tile adhesive mortar, joint mortar, insulation mortar, waterproof mortar, decorative mortar, colored mortar, and so on. A set of dry mortar production machinerycan produce various kinds of mortars for different uses which include ordinary mortar and special mortar. since it can produce insulation mortar, some customers call it thermal insulation mortar production line, thermal insulation plaster plant, waterproof thermal insulation mortar production line, etc. The differences lie in the different dry mix mortar recipes. Aimix Group can provide dry mix mortar recipe for customers.
In June 2019, one set of Aimix dry mortar production line was set up successfully in Zambia with the help of our service team. Our customer is satisfied with our equipment and service and speaks highly of our service. This is a dry mortar production line with a production capacity of 20 tons. It can produce various types of dry mortar in large amounts.
Aimix Group, a China dry mortar production line manufacturer, has helped customers in domestic and overseas countries set up their dry mortar production lines in the past years. Our Dry Mortar Plant has been exported to Iran, Pakistan, Indonesia, Cambodia, Sri Lanka, Qatar, India, Vietnam, Thailand, Romania, Peru, Korea, Sri Lanka , etc. There are more than 180 linesavailable for customers to visit. Our company provides one-stop free instruction service from process design, mortar mix ratio and construction process, etc. (excluding the on-site guidance costs) to solve the customers worries.
If you are planning to invest in this promising dry mix mortar production lineindustry, dont hesitate to contact us and get the latest dry mortar production line price now! Write down your questions or inquiry in the form below now or send an email! We will reply to you in 24 hours! Please feel free to give your inquiry in the form below. We will reply in 24 hours. Your Name(required): Product Capacity (t/h): Your Email(required): Your Tel(required): Your Country: Your Company: Your Message(required):