Which grinding mills can be used in barite ore processing plant

barite ore processing plant
According to the characteristics of barite, Shanghai Clirik Machinery Co.,Ltd have designed the corresponding barite grinding mills for barite ore processing plant. These devices have the characteristics of reasonable structure, small footprint, low power consumption, long operating life, low cost of wearing parts, and high cost performance. Suitable for all kinds of customers.
The barite crystals are large tube-shaped, and the crystals can sometimes form a rosette or branched crystal block, which is called crown hairy barite. Barite is a non-renewable resource and can be used as a white pigment. It can also be used in chemical, papermaking, and textile fillers. It can be used as a flux in glass production and increase the brightness of glass, but it is mainly used as a weighting agent in drilling. In the industry and refined barium.

Processing technology

After repeatedly crushing the barite stone mined from the mountain through a jaw crusher, an impact crusher, a cone crusher and other equipment, the stone is crushed to 2-3 mm, and then passed through a Raymond mill and a trapezoidal mill. Machine, vertical mill, superfine mill, etc., the stone is further processed to more than 350 mesh.

Equipment needed

european version coarse grinding mill for bariteEuropean version coarse grinding mill

When the barite European version mill works, the main motor drives the main shaft and the turntable to rotate through the reducer, and the grinding pin on the edge of the turntable drives dozens of grinding rollers to roll in the grinding ring raceway. Large pieces of material are broken into small particles by the hammer crusher, and then sent to the storage bin by the elevator, and then the materials are evenly sent to the upper bulk disk of the turntable through the vibrating feeder and inclined feeding tube.

The material is scattered to the periphery of the circle under the action of centrifugal force, and falls into the rolling ring of the grinding ring. The material is impacted, rolled, and ground by the ring roller. After three layers of processing, the powder is turned into a powder. Suction into the machine, and bring the crushed material into the powder separator. The rotating impeller in the classifier makes the coarse material fall back and grind. The fine powder that meets the requirements enters the cyclone powder collector and is discharged through the discharge valve at the lower part of the separator. The airflow with a small amount of fine dust is After being purified by the pulse dust collector, it is discharged through the fan and muffler.

Raymond mill for bariteRaymond Mill

Baryte Raymond mill is suitable for the preparation of various ore powders and coal powders, such as fine powder processing of raw materials, gypsum ore, coal and other materials. This machine is widely used in barite, calcite, potassium feldspar, talc, marble, limestone, dolomite, fluorite, lime, activated white clay, activated carbon, bentonite, kaolin, cement, phosphate rock, gypsum, glass, insulation materials High-fine milling of more than 300 materials such as non-flammable and explosive mineral, chemical, and construction industries with a Mohs hardness of no more than 9.3 and a humidity of less than 6%, and the particle size of the finished product can be arbitrarily adjusted within the range of 80-325 mesh , Some materials can reach up to 2000 mesh.

When the barite Raymond mill works, the bulk barite raw materials are crushed to the required feed size, and the materials are transferred to the storage bin by the bucket elevator, and then uniformly sent by the electromagnetic vibration feeder. The grinding room of the host. The materials entering the grinding chamber are lifted up by the shovel and entered between the grinding roller and the grinding ring. The blower blows air from the diverter disk into the grinding chamber, and sends the crushed powder to the analysis chamber, which is driven by the transmission device through the speed regulating motor. The separation of the rotating analysis impeller, the large particles fall back to the grinding chamber for re-grinding, and the qualified fine powder enters the finished cyclone powder collector with the airflow, and is separated from the air, and then discharged from the discharge port as the finished product. During the work of the main machine, the blade system played a very important role. It is located at the lower end of the grinding roller. During the same rotation of the blade and the grinding roller, the material is scooped up and fed into the grinding roller roll ring to form a dunnage layer. The material layer is subjected to outward pressing force by the rotation of the grinding roller to move the material. Crushing to achieve milling purpose.

Overpressure trapezoidal grinding mill for bariteOverpressure trapezoidal grinding mill

This barite mill is particularly suitable for desulfurization of large thermal power plants and desulfurization of steel plants.

When the barite overpressure trapezoidal grinding works, the host drives the central shaft to rotate through the reducer. The upper end of the shaft is connected with a plum frame. The frame is equipped with a grinding roller device and forms a swing fulcrum. The grinding roller device not only rotates around the central axis, but also revolves around the grinding ring. The grinding roller itself rotates due to friction. A shovel system is installed under the plum frame, and its position is at the lower end of the grinding roller. During the same rotation of the blade and the grinding roller, the material is thrown up and fed between the grinding roller grinding rings to form a dunnage layer. The outward centrifugal force (ie squeezing force) is generated to crush the material, thereby achieving the purpose of milling.

The powder classifier drives the blades on the turntable to rotate through the speed-regulating motor to form a classification effect on the powder. The qualified finished powder is sucked into the large cyclone collector with the airflow through the blade. After the airflow and the powder are separated, the powder is collected. The undesired powder is thrown to the outer wall by the blade to escape from the airflow, and the coarse powder falls into the grinding chamber for re-grinding due to the effect of its own gravity. When the powder-laden airflow enters the collector, it is in a high-speed rotating state. After the airflow is separated from the powder, the gas-fluid wall shrinks and moves to the center to the bottom of the cone to form a rotating upward airflow cylinder. At this time, the powder is collected. A powder lock is installed at the lower end of the collector, and its function is to isolate the positive pressure gas from the negative pressure gas of the collector. If the tongue plate of the powder lock or the powder lock is not fitted properly, it will cause no powder or powder. Less powder, which seriously affects the output of the whole machine.

High pressure suspension roller mill for bariteHigh pressure suspension roller mill

Barite high pressure suspension roller mill is mainly suitable for processing various non-flammable and explosive mineral materials with Mohs hardness below 9.3 and humidity below 6%, in metallurgy, building materials, chemical industry, mining, highway, water conservancy and hydropower, etc. The industry has a wide range of applications and is ideal for processing quartz, feldspar, calcite, limestone, talc, ceramics, marble, granite, dolomite, bauxite, iron ore, barite, bentonite, coal gangue, coal and other materials Selection, the fineness of the finished product of the material can be adjusted between 0.613 mm and 0.033 mm.

In the host of the barite high-pressure suspension roller mill, the roller assembly is suspended on the roller hanger by a cross arm, the roller hanger is fixedly connected to the main shaft and the blade holder, and the pressure spring is pressed against the roller bearing chamber. On the outer end surface of the cantilever, the cross roller shaft is used as a fulcrum to force the grinding roller to be pressed tightly on the inner circular surface of the grinding ring. When the motor drives the main shaft to rotate through the transmission device, the blade mounted on the blade holder rotates synchronously with the grinding roller, and the grinding roller rotates around its own axis while rolling inside the grinding ring. The motor drives the analyzer to rotate through the transmission device. The higher the impeller speed, the finer the sorted powder. In order to ensure that the mill works under negative pressure, the increased air flow is discharged into the baghouse dust collector through the residual air pipe between the fan and the host, and is discharged into the atmosphere after being purified.

HGM ultrafine powder grinding mill for bariteHGM ultrafine powder grinding mill

Barite ultafine powder grinding mill is the new type mining equipment for making 5-74 micron(200-2500 mesh) micro powders, fine powders. It is widely applied in the industries of metallurgy, mining, chemistry, cement, construction, refractory materials, ceramics, and so on. The purpose of the micro powder grinding mill is for super-fine grinding materials with hardness less than 6 in Moh's scale and humidity less than 6 percent such as kaolin, limestone, calcite, marble, talcum, barite, gypsum, dolomite, bentonite mud, mica, pyrophyllite, sepiolite, carbon black, diatomite, graphite, alunite, fluorite, potassium feldspar, phosphorite, pigment, up to 200 kinds.

After crushed by hammer crusher, the large materials become small ones and are sent to storage hopper by elevator, and then evenly sent to the upper distribution plate of the turn plate by vibrating feeder and sloping feeding pipe. When the grinding mill is at work, the main bearing and each dial are driven by electromotor through reducer, and all the grinding rollers are rolling in the ring channels driving by dial through plunger. The materials are driven to the edge of the turn plate by the centrifugal force and fall down into the grinding chambers. The high-pressure air blower constantly inhales air, airflow with crushed materials are brought to classifier whose high-speed impeller will screen the airflow: The unqualified particle size will fall and return to the mill for being reground while the qualified particle size mixed with air will go into the cyclone powder collector. Most of the qualified powders will fall and exit from the discharging valve at the bottom; A small proportion of the fine powders, with airflow, moves to the dust cleaner. The materials from the above two lots are sent by the conveyor to get finished powders packed. In addition, filtered clean air will be emitted from muffler in the end.

Application area

Barite can be widely used in the following industries after intensive processing by the milling machine:

1. Drilling mud weighting agent:
In the drilling of some oil and gas wells, the drilling mud and clay used generally have a specific gravity of about 25 and a water specific gravity of 1, so the specific gravity of the mud is low. Sometimes the mud weight cannot be balanced with underground oil and gas pressures, which can cause 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. Barite used for drilling mud generally needs to have a fineness of more than 325 mesh. If the barite is not fine enough, precipitation will easily occur. Barite for drilling mud requires a specific gravity greater than 4.2, BaSO4 content is not less than 95%, and soluble salts are less than 1%.

2. Zinc Barium White Pigment:
Zinc barium white is a commonly used white pigment of good quality and can be used as a raw material for paints and painting pigments. Barium sulfate is heated and reduced to barium sulfide (BaS) using a reducing agent, and then the mixture of barium sulfate and zinc sulfide (BaSO4 accounts for 70% and ZnS accounts for 30%) obtained by reaction with zinc sulfate (ZnSO4) is zinc barium. White pigment. The preparation of zinc barium white barite requires BaSO4 content greater than 95%, and at the same time it should not contain visible colored impurities.

3. Various barium compounds:
With barite as raw material, chemical materials such as barium oxide, barium carbonate, barium chloride, barium nitrate, precipitated barium sulfate, and barium hydroxide can be manufactured. Chemically pure barium sulfate is the standard for measuring whiteness. Barium carbonate is an important raw material for optical glass. It introduces BaO into glass to increase the refractive index of the glass and improve other optical properties. It is used in ceramics to prepare glazes. Barium chloride is an agricultural pesticide; barium nitrate is used in the fireworks and glass industry; barium permanganate is a green pigment.

4. Filling industry:
In the paint industry, barite powder fillers can increase paint film thickness, strength, and durability. Barite for the paint industry requires sufficient fineness and high whiteness.

5. Mineralizer for cement industry:
Adding barite and fluorite composite mineralizers in cement production has obvious effects on promoting the formation of C3S and activating C3S. The quality of clinker is improved. The early strength of cement can be increased by about 20-25%, and the later strength can be increased by about 10%, the clinker firing temperature is reduced from 1450 ℃ to 1300 ± 50 ℃. The effect is better when the barite content is 0.8 to 1.5%. In the production of white cement, after using barite and fluorite composite mineralizers, the firing temperature was reduced from 1500 ° C to 1400 ° C, the free CaO content was low, and the strength and whiteness were improved. Adding an appropriate amount of barite to the cement raw material using coal gangue as raw material can greatly improve the strength of cement with low clinker saturation ratio, especially the early strength. This is the comprehensive utilization of coal gangue and production. Low-calcium, energy-saving, early-strength and high-strength cements provide a beneficial approach.

6. Anti-radiation cement, mortar and concrete:
The use of barite has the ability to absorb X-rays, and barium cement, barite mortar, and barite concrete are made of barite to replace metal lead plates to shield nuclear reactors and to construct scientific research and hospital-proof X-ray buildings.

7. Road construction:
In road construction, a rubber and asphalt mixture containing about 10% barite has been successfully used in parking lots and is a durable paving material. At present, the tires of heavy road construction equipment have been partially filled with barite to increase weight and facilitate the consolidation of the filling area.

8. Other:
Barite and oil are blended and coated on a cloth base to make tarpaulin; barite powder is used to refine kerosene; used as a contrast agent for the digestive tract in the pharmaceutical industry; it can be used to produce pesticides, leather, and fireworks; used to extract barium metal; Used as getter and adhesive for TV and other vacuum tubes; barium is alloyed with other metals (aluminum, magnesium, lead, calcium) for bearing manufacturing.

Shanghai Clirik Machinery Co.,Ltd is a professional Chinese supplier of mine equipment for producing stone powder.
Production of the entire line,from crushing ,conveying,grinding ,modification to packaging. 
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