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Bentonite

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Bentonite (montmorillonite) due to their excellent physical and chemical properties, do binders,suspending agents, thixotropic agents, stabilizers, purification bleaching agents, filling material,feed, catalyst, etc., widely used in agriculture, light industry and cosmetics , medicine and otherfields, so montmorillonite is a versatile natural mineral materials.

Classification

Bentonite interlayer cation species decide bentonite types, interlayer cations Na +, said sodium bentonite; interlayer cations Ca +, said calcium bentonite; interlayer cations H +, said hydrogen- bentonite (activated clay); interlaminar cation is an organic cation, said organic bentonite.

Relatively speaking, the market demand (China more than 4 million tons annual demand) products such as metallurgical pellet, foundry sand, drilling mud and underground construction, bentonite in investment, production, technology and marketing aspects of the threshold is low.Market price between 100-500 yuan per ton. Wide distribution of mineral resources, industrythreshold is low, resulting in the production of such low-end products in all parts of bentonite

plant, everywhere. Product prices low, causing the cost of transport costs as a percentagesensitive to such traditional products in the market is generally not more than 500 km radius. Itsnot a national market.

Activated Clay dedicated dryer:

The activated clay dryer before drying the cake for high viscosity, water content, which isdifficult drying and other problems, the host structure, speed, slope, fans and other aspects ofordinary dryer optimized layout and design. Proven to meet the production needs of active clay.Activated clay from drying moisture 50% to 10%, coal consumption per ton of product is notmore than 180 kg of standard coal.

Organic bentonite production process can be classified into three categories: wet,dry and pre-gel method. Currently multi-use wet. Now focuses on wet productionprocess, the manufacturing process is as follows:

1, pulping: first bentonite fully dispersed in water to remove sand and debris. In order to fullydispersed bentonite, should side feeding, while stirring, sometimes a dispersing agent such ashigh purity, should be purified.

2, Modified: various clay minerals such as montmorillonite, hectorite, attapulgite, soapstone can be organic soil materials, but sodium bentonite and hectorite is the best. As a raw material fororganic soil, the number of exchangeable cations should be as large as possible, otherwisedifficult to cover or cover is incomplete. In order to improve the exchange capacity of bentonite,

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bentonite can be modified by adding a small amount of alkali. The amount of base, depending onthe quality, as bentonite. As with calcium bentonite, firstly should be modified.

3, cover: To heat a concentration of 1% to 7% bentonite slurry, under constant stirring slowlyadd the coating agent, and then continuous stirring, heating and stirring is stopped, and then

filtered, dried. If you need a liquid organic soil, you do not need drying.

4, ball mill grinding: After drying of the organic soil must be finely ground, usually fineness of200 mesh. Organic bentonite production process is not complicated, but to get satisfactoryresults, you should take note of the bentonite should have a certain exchange capacity, coverageagent type, dosage and purity bentonite three main points.

The world has more than 40 countries produce bentonite, with an average annual production ofmore than 9000 million t. The main producing countries: the United States, the former SovietUnion, India, Greece and Japan, production in these countries of the world annual production of3/4. Among them, the most productive American bentonite.

Bentonite used to make waterproof material, such as bentonite waterproof blanket, waterproof board and its supporting materials, preclude the use of mechanical fastening method laid.

Bentonite comprehensive utilization technology

Bentonite different products, montmorillonite content and genotypes have differentrequirements, otherwise it is not up to quality standards. Therefore bentonite sorting purification,is the basis for comprehensive utilization of bentonite. Bentonite beneficiation process

purification of dry and wet. Dry mainly winnowing of the world more than 90% bentoniteconcentrates obtained by winnowing. General requirements winnowing feed containing

montmorillonite amounted to 80%.

To take full advantage of montmorillonite content of less than 80% of low-grade bentonite, high purity can be obtained by wet smectite ore beneficiation process. Choose a suitable dispersantcan be sorted to achieve both purified montmorillonite sodium modification purposes. Wet

process to re-elect-based, with a stirring ultrafine grinding mill grinding equipment, cyclone orcentrifuge classification, magnetic separation rid of magnetic minerals. Wet process waterconsumption, dehydration difficult.

An indirect intro to bentonite drying equipment fire drum drum dryers

Bentonite drying drying method mainly includes direct and indirect drying method. Currently,some manufacturers use bentonite direct drying method, using high-temperature heat pipe heatgenerated stove pure hot air, the material was dehydrated, drying, dried directly; somemanufacturers use indirect drying method, and the fire drum drum dryer is more advancedindirect drying equipment.

Fire drum drum dryer heat source provided by a solid fuel stove. Burner can use horizontalreciprocating grate or chain grate two types, through its own unique two-stage and two-stage

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dust combustion structure, the full combustion of the fuel, to provide high-quality high calorificvalue gas, the thermal efficiency of 80% or more.

More information, please inquiry our experts. If the common bentonite drying equipment can notsatisfy your need, Zenith can design other bentonite drying equipment depending on your calcite,

capacity, final size and other demands. Please believe Zenith can supplier perfect bentonitedrying equipment, crushing plant and grinding plant for you.

Bentonite is a non-metallic minerals, whose main mineral composition is montmorillonite.Bentonite has been used in industrial and agricultural production and more than 20 areas of morethan 100 departments, there are more than 300 products, so people call it universal earth.

Bentonite production countries are the U.S., China, Greece, Turkey, Russia, Japan, Mexico,Brazil, Germany and so on.

Bentonite mill equipment consists of:

A full set of Bentonite grinding mill machine includes hammer crusher, bucket elevator, storagehopper, vibrating feeder, milling machine host, inverter classifier, double cyclone powdercollector, pulse dust removal system, high pressure air , air compressors, electrical controlsystem, etc.

Bentonite mill working principle

When working milling machine host drive motor through reducer rotating spindle and turntable,turntable edge of the roll pin driven dozens of roller raceway in the inner ring rolling mill.Bentonite ore material through the hammer crusher into small particles after the elevator into the

storage hopper, vibrating feeder and then through the feed tube and tilt the bentonite particlesevenly to the upper part of the bulk material turntable plate. Bentonite particles under the effectof centrifugal force scattered around the circle, and fall into the grinding ring raceway inner ringrollers are shock, roll rolling, grinding, after processing into a three-ring Road bentonite powder,high pressure air through the suction effect of the external air is sucked into the machine, and thecrushed powder bentonite powder with selected machine. The powder inside the rotatingimpeller heavy fall in the crude bentonite powder mill, to meet the requirements of the powderwith the air into the cyclone powder collector by its lower exhaust discharge valve shall be final

bentonite fine powder, and with a small amount fine dust through pulse dust collector airflowthen purified through the fan and silencer discharge.

Bentonite mill performance characteristics:

1,Efficiently

Bentonite powder fineness and motor power under the same circumstances, bentonite ultrafinemill output is more doubled than jet mill, mixing mill and ball mill;

2, long life wearing parts

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Roller, grinding ring forging made ??using special materials, so that the durability is greatlyimproved. Materials and fineness in the same circumstances, bentonite ultrafine mill vulnerable

parts than the impact crusher and turbo-mill 2-3 times longer service life of wearing parts,usually up to one year; this kind of mill in the processing of calcium carbonate, calcite, a life ofup to 2-5 years;

3,Safety reliability is high

Due to grinding chamber without rolling and screws, Safety reliability is high.

Bentonite ore mining scale divided into two kinds: one is by ore production volume, the secondis based on total concentrate production.Overview the production from the current situation, most is small-scale mining. Mine is usuallydivided by the size of the ore production volume, but the calculation of the output value, profitsand other concentrates and by the amount of interest and generally has a joint venture mining and

processing are like this.

Bentonite mill for ore processing

Bentonite mill is a professional mill equipment for bentonite hardness and water content of painstaking research and development of professional equipment, energy efficient,environmentally clean, model variety, you can choose different types of equipment according toyour different processed fineness and yield. The mill equipment can process bentonite, but alsocan meet the requirements of ore processing of various classes of materials, including calcite,dolomite, mica stone, limestone, coal, phosphate rock, diabase, calcium carbonate, calciumhydroxide, bauxite, kaolin, garnet, clay, limestone, bluestone, etc. Mohs hardness of less than six

brittle ore processing.

High efficiency bentonite mill

High efficiency bentonite mill is the material to be broken, and then to smash the key equipment.Ball mill is widely used in water, silicate products, new building materials, refractory materials,fertilizer, ferrous and nonferrous metal and glass ceramics and other production industries,mainly used for a variety of ores and other grind-able materials dry or wet powder mill.

Raymond mill is also the main type of bentonite powder manufacturing grinding plant.

Bentonite Raymond mill working process:

Continuously feeding the material evenly within the host, for grinding, after grinding powderwill be circulating blower airflow out through the top of the host Raymond mill grading analysismachine. Fineness of the powder will meet the specifications, with the airflow into the cyclonecollector through the powder discharge pipe is finished. Merry received by a whirlwind the topof the return air duct into the blower, the entire air duct system is a closed loop, and most areunder negative pressure flow.

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