Barite Ultrafine Powder Grinding Mill Machine 200-2500 Mesh

About Barite

Barite is a non-metallic mineral product with barium sulfate (BaSO4) as the main component (chemical composition: BaO: 65.7%, SO3: 34.3%. The composition has Sr, Pb, and Ca similar substitutions). Barite is a sulfate mineral. The composition is BaSO4. The most widely distributed barium-containing mineral in nature.
 
Barite Moh's hardness is 3-3.5, the specific gravity is 4.5, the barium sulfate content is 98%, and the chemical composition of barite is BaSO4.

As an important non-metallic mineral, barite has a very wide range of industrial uses after being processed into powder.

SBM Ultrafine Powder Tech specializes in the production of barite powder grinding mill machines.

Barite Ultrafine Powder Grinding Mill Machine

HGM ultra-fine grinding mill is an ultra-fine powder grinding equipment for the grinding of non-metallic minerals such as barite, calcite, limestone, dolomite, etc., over 200 mesh.

Name: HGM series ultrafine powder grinding mill
Output Size: 200-2500 mesh
Capacity: 0.5-45 t/h
Avaliable Materials: barite, limestone, calcite, marble, feldspar, dolomite, gypsum, kaolin, talc, mica, illite, bentonite, fly ash, carbon black, coal, basalt, graphite, flourite, pumice, etc. More than 280 kinds of materials.
 

Advantages of barite grinding mill

●HGM Barite Grinding Mill High Efficiency

Under the same output size the capacity of HGM ultrafine powder grinding mill is twice as much as jet mill, mixing grinder and ball mill, and energy consumption decreased 30%.

●Spare Parts Long lifecycle of HGM Barite Grindign Mill

HGM barite grinding mill's rings and rollers are forged by special material with high utilization. Under the same grinding material and ouput size, the lifecycle of spare parts is about one year, which is 2-3 times longer than impact mill.
Furthermore, the lifetime can reach 2-5 years for grinding barite. The lifecycle of spare parts is variable for the material's hardness.
 

●HGM Barite Grindign Mill High Safety and Reliability

As no rlling bearings or screws in grinding cavity, there are no problems caused by bolts shedding or rapid wear of bearings and seal components.
 

●HGM Barite Grindign Mill High Fineness, Flexible Adjustment

The final fineness of the grinding materials can be adjusted between 200 meshes and 2500 mesh (74-5 micron).
 

●HGM Barite Grindign Mill Environment-friendly

The application of pulse bag filter and muffler greatly alleviates dust pollution and noise.
 

●Advanced Intelligent Speed Control Device of HGM Barite Grindign Mill

It can make the material feed into the machine evenly,adjust the main speed to fit for grinded material,the fineness more stable. So as to increase the capacity and efficiency, reduce the power consumption.

Working principle of barite ultrafine powder grinding mill

Structure of barite grinding mill

Barite powder grinding plants

Technical parameters of HGM barite grinding mill

 

Parameters of HGM Series Ultrafine Grinding Mill
Model	HGM80	HGM80A	HGM90L	HGM100L-Ⅱ	HGM100P	HGM125L	HGM1680L
Ring Diameter(mm)	800	800	900	1000	1000	1250	1680
Ring Number (PCS)	3	3	4	4	4	4	4
Input Size (mm)	≤10	≤10	≤10	≤15	≤15	≤20	≤20
Output Size (mesh)	150-3000	150-3000	150-3000	150-3000	150-3000	150-3000	150-3000
Capacity (t/h)	0.5-5.5	0.5-5.5	0.8-6.5	1.2-10	1.2-11	2.5-20	5-45
Outlet Size L*W*H (mm)	8605*4139*6050	10454*3393*6626	11735*3952*7525	14507*3633*7562	14362*4200*7562	19261*4406*8591	25067*5414*9007
Main Motor Power (kw)	75	75	55*2	132/75*2	132/75*2	185	315

Further Reading:

What are the uses of barite?

Barite is a very important non-metallic mineral raw material and has a wide range of industrial uses.

1. Barite used in drilling mud weighting agent

In some oil and gas wells, the drilling mud and clay have a specific gravity of about 2.5 and water has a specific gravity of 1. Therefore, the specific gravity of the mud is low. Sometimes the mud weight cannot be balanced with the underground oil and gas pressure, causing blowout accidents. In the case of high underground pressure, it is necessary to increase the specific gravity of the mud. Adding barite powder to the mud is an effective measure to increase the specific gravity of the mud. Generally, the fineness of barite used for drilling mud should reach 325 mesh or more. If the fineness of barite is not enough, precipitation is easy to occur. Barite for drilling mud requires a specific gravity greater than 4.2, BaSO4 content not less than 95%, and soluble salt less than 1%.

2. Barite used in lithopone pigment:

Lithopone is a commonly used high-quality white pigment that can be used as a raw material for paints and painting pigments. Barium sulfate is heated and reduced to barium sulfide (BaS) by using a reducing agent, and then reacted with zinc sulfate (ZnSO4) to obtain a mixture of barium sulfate and zinc sulfide (BaSO4 accounts for 70%, ZnS accounts for 30%) is zinc barium White paint. The barite for making lithopone requires a BaSO4 content of more than 95%, and should not contain visible colored impurities.

3. Various barium compounds:

Barium oxide, barium carbonate, barium chloride, barium nitrate, precipitated barium sulfate, barium hydroxide and other chemical materials can be produced by using barite as raw material.

Chemically pure barium sulfate is the standard for measuring whiteness; barium carbonate is an important raw material for optical glass. It introduces BaO into the glass to increase the refractive index of the glass and improve other optical properties; it is used to prepare glazes in ceramics ; Barium chloride is an agricultural pesticide; barium nitrate is used in fireworks and glass industry; barium permanganate is a green pigment.

4. Barite for filler industry:

In the paint industry, barite powder filler can increase the thickness, strength and durability of the paint film. Lithopone pigment is also used in the manufacture of white paint, which has more advantages than lead white and magnesium white when used indoors. The barite used in the paint industry requires sufficient fineness and high whiteness.

The paper industry, rubber and plastic industries also use barite as fillers, which can improve the hardness, wear resistance and aging resistance of rubber and plastics.

Barite fillers for rubber and papermaking generally require BaSO4 greater than 98%, CaO less than 0.36%, and no magnesium oxide, lead, etc. are allowed.

5. Mineralizer for cement industry:

The use of barite and fluorite composite mineralizers in cement production has obvious effects on promoting the formation of C3S and activating C3S. The quality of clinker has been improved. The early strength of cement can be increased by about 20-25%, and the later strength is about Increased by 10%, the sintering temperature of clinker is reduced from 1450℃ to 1300±50℃. The best effect is when the content of barite is 0.8~1.5%. In the production of white cement, after using barite and fluorite composite mineralizer, the firing temperature is reduced from 1500°C to 1400°C, the free CaO content is low, and the strength and whiteness are improved. Adding an appropriate amount of barite to the cement raw material using coal gangue as raw material can greatly increase the strength of cement with a low clinker saturation ratio, especially the early strength, which is the comprehensive utilization of coal gangue for production Low-calcium, energy-saving, early-strength and high-strength cement provides a beneficial way.

6. Anti-ray cement, mortar and concrete:

The use of barite has the ability to absorb X-rays, and barite is used to make barium cement, barite mortar and barite concrete to replace metal lead plates to shield nuclear reactors and build scientific research and hospital X-ray-proof buildings.

Barium cement is made of barite and clay as the main raw materials, sintered to obtain clinker with dibarium silicate as the main mineral composition, plus appropriate amount of gypsum, and ground together. The specific gravity is higher than that of ordinary Portland cement, which can reach 4.7-5.2. The intensity number is 325～425. Because barium cement has a high specific gravity, it can be mixed with heavy aggregates (such as barite) to make uniform and dense anti-X-ray concrete.

Barite mortar is a kind of mortar with a large bulk density and a blocking effect on X-rays. It is generally required to use Portland cement with low heat of hydration. The usual cement: barite powder: barite sand: coarse sand The ratio is 1:0.25:2.5:1. Barite concrete is a kind of concrete with large bulk density and shielding ability to X-rays. The cementitious material generally uses special cements such as Portland cement with low heat of hydration or high alumina cement, barium cement, and strontium cement. Portland cement is the most widely used. Commonly used cement: barite crushed stone barite sand: water mixture ratio is 1:4.54:3.4:0.5; 1:5.44:4.46:0.6; 1:5:3.8:0.2.

For barite used in anti-ray mortar and concrete, the content of BaSO4 should not be less than 80%, and the impurities such as gypsum, pyrite, sulfide and sulfate should not exceed 7%.

7. Barite used in road construction:

A mixture of rubber and asphalt containing about 10% barite has been successfully used in parking lots and is a durable paving material. The tires of heavy road construction equipment have been partially filled with barite to increase the weight and facilitate the compaction of the fill area.

8. Other:

Barite and oil are blended and coated on cloth to make tarpaulin; barite powder is used to refine kerosene; it is used as a contrast agent for the digestive tract in the pharmaceutical industry; it can also be used to make pesticides, tanning, and fireworks. In addition, barite is also used to extract metal barium, as a getter and binder for televisions and other vacuum tubes. Barium is alloyed with other metals (aluminum, magnesium, lead, calcium) and used in bearing manufacturing.
 

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Barite beneficiation

Why does barite need beneficiation treatment?

Barite is an important mineral resource, which plays an extremely important role in many industries and fields. However, the raw barite ore contains a lot of impurities, and it needs beneficiation and purification to increase the content or specific gravity of barite.

The barite beneficiation process can basically be divided into a gravity separation process and a flotation process. The barite ore must be beneficiated because its specific gravity is difficult to meet the industrial requirements. For barite beneficiation, barite beneficiation needs to be established. In the production line, the raw barite ore needs to go through processes such as crushing, screening, jigging, and dehydration.

Process flow of barite gravity separation

The gravity separation process has the advantages of large selected particle size, wide selected particle size, and large processing capacity. The gravity separation method occupies a major position in the field of barite beneficiation. The use of gravity separation method to purify and process barite ore has the advantages of high efficiency, energy saving and environmental protection. It can also obtain ideal beneficiation indicators. The recovery and processing effect of coarse and fine grained barite is excellent. In barite concentrators, gravity separation has become the core method.

The process flow of barite gravity separation is mainly as follows: the raw barite ore is washed, screened, crushed, graded and deslimed, and then subjected to the jigging process to obtain a good quality concentrate, with a product grade of over 88%. Jaw crushers or impact crushers are generally used for barite crushing, and pair-roll crushers are generally used for fine crushing. At the same time, the classification can also be used for heavy medium drum sorting machine, cone classifier, shaker, screw machine, etc. The grain size of barite embedded cloth is larger than 2mm, and it can usually be separated by heavy medium and jig. The maximum particle size for heavy medium separation is 50mm. The maximum particle size of wet and dry jigging is about 20mm. The particle size of the embedded cloth is less than 2mm, and it can be sorted by a shaker or a spiral classifier. Before selection, a hydrocyclone must be used to remove the mud to improve the sorting effect. The jigging machine can effectively separate coarse, medium and fine-grained barite ore, and the beneficiation effect is ideal, which can effectively increase the proportion of barite and use circulating water for operation. The beneficiation process does not require chemicals and does not pollute the environment. It is a new type of high-efficiency, energy-saving and environmentally-friendly barite beneficiation method.

Barite flotation process

Barite beneficiation process-introduction to flotation process: Flotation must be used for the separation of ore with very fine embedded particle size and heavy separation tailings. There are two types of flotation, positive flotation and reverse flotation. Reverse flotation usually removes alkali metal sulfides.

The barite flotation and beneficiation production line is composed of jaw crusher, ball mill, classifier, magnetic separator, flotation machine, thickener, dryer and other main beneficiation equipment, with auxiliary feeders, elevators, conveyors, etc. The beneficiation machinery can form a complete beneficiation production line. The beneficiation production line has the advantages of high efficiency, low energy consumption, high processing capacity, and reasonable economy.

As a common salt mineral, the flotation process of barite is divided into two types according to the form of adsorption. One is to use fatty acid alkyl sulfate, alkyl sulfonate and other anionic collectors, according to the form of chemical adsorption. It is adsorbed on the surface of barite minerals and separated from others; the other is to use cationic amine collectors to flotate barites in the form of physical adsorption. Amine collectors have low collection efficiency and are extremely sensitive to the impact of sludge, so anionic collectors are ideal. Usually NaOH is added to the ball mill to adjust the pH to 8-10, water glass is added to the slurry as a regulator, and the oleic acid collector is used for flotation under the condition of a solid concentration of 40% to 50%.

General requirements for barite flotation process

1. Grinding fineness: The flotation of barite generally requires a grinding fineness of -200 to 85~90%. Usually the first stage grinding-classifier overflow enters the cyclone and passes through the cyclone. After classification, the second stage of grinding is carried out, and the best grinding fineness needs to be determined by experiment.

2. Stirring: It is advisable to use a powerful two-stage stirring tank.

3. Flotation: The process is generally one rough and one sweep (some do not have sweeping) for five to six selections. The medium ore can be returned once or the first fine, the second fine returns in turn, and the third to fifth fines are concentrated and then selected. Straight line after the tail. A feature of barite flotation is that the number of selections of flotation is large.