Grinding Process and Application of Fluorite

Date:2023-07-24 16:04:41 From: Click:

About Fluorite

Fluorite , also known as fluor, is a mineral, its main component is calcium fluoride (CaF2), containing more impurities. Calcium is often replaced by rare earth elements such as yttrium and cerium, in addition to containing a small amount of Fe2O3, SiO2 and trace amounts of Cl, O3 and He. Fluorite in nature often shows bright colors, hardness is lower than the knife. Fluorite can be used to prepare hydrogen fluoride: CaF2 + H2SO4 → CaSO4+ 2HF; Its refractive index and dispersion are extremely low, the transmission performance of infrared and ultraviolet rays is high, and it is suitable for optical components. However, natural fluorite crystals are often not pure, mixed with impurities, and the volume is not enough to manufacture large optical components, so artificial crystallization of fluorite has become one of the materials used to manufacture low-dispersion optical components for lenses.

Application of Fluorite

Half of the world's fluorite production is used to make hydrofluoric acid, which is then developed into cryolite for use in the aluminum smelting industry. The coolant in the refrigerator (freon) is also fluorite; In 1986, China's first generation of artificial blood also used fluorite. Now, scientists are developing fluoride glass that has the potential to be made into a new type of fiber-optic communication material that can be transmitted across the 20,000-kilometer-wide Pacific Ocean without setting up a relay station. Non-stick pans used at home are also coated with a layer of fluoroplastic. Hydrofluoric acid is used in all aspects of our lives.

Chemical Industry

An important use of fluorite is the production of hydrofluoric acid. Hydrofluoric acid is made of acid grade fluorite (fluorite concentrate) and sulfuric acid in the heating furnace or tank reaction, divided into anhydrous hydrofluoric acid and aqueous hydrofluoric acid, they are colorless liquid, volatile, with a strong irritating smell and strong corrosion. It is a key raw material for the production of various organic and inorganic fluorides and fluorine elements.

In the aluminum industry, hydrofluoric acid is used in the production of aluminum fluoride, artificial cryolite, sodium fluoride and magnesium fluoride.

In the aerospace industry, hydrofluoric acid is mainly used in the production of jet liquid propellants and missile jet fuel propellants. In the atomic energy industry, UF4 is mainly produced by hydrofluoric acid, UF6 is produced by refluorination, and 235U is separated by gas diffusion or gas centrifugation.

Hydrofluoric acid is the basic raw material of the organic fluorine chemical industry. It interacts with chloroform and carbon tetrachloride to produce low toxicity and high chemical stability of chlorofluorocarbons and fluorocarbons, which are used as refrigerants, air sol accelerators, solvent polymers and intermediates of fluorocarbon resins and elastomers.

In medicine, fluorinated organic compounds can also be made into fluorinated anticancer drugs, fluorinated cortisone, fluorocarbon artificial blood, artificial hearts and artificial bones.

Hydrofluoric acid can also be made into freon. In addition to being a refrigerant, freon is also widely used in sprays and fire extinguishing agents. In the inorganic fluoride industry, it can also be made into insecticides, preservatives, additives, co-solvents and antioxidants.

Building Materials Industry

In the glass industry, adding fluorite as a flux and shading agent can promote the melting of glass raw materials. The amount of fluorite added to different glasses is different. For ordinary glass plates, the amount of fluorite added is 1% of the charge; Alkaline glass spheres, the addition of fluorite is 1% ~ 2%; Oxidized glass, fluorite content is 3%; In the production process of white, opal and colored glass, in addition to the use of cosolvents, fluorite is also used as a shading agent, and the addition amount is 10% to 20% of the charge. The glass industry has strict requirements on the quality of fluorite, requiring caf> 80%; Fe2O3< 0.2%.

Fluorite is added as a mineralizing agent in cement production. Fluorite can reduce the sintering temperature of the charge, reduce the fuel consumption, and increase the liquid phase viscosity of the clinker during sintering, and promote the formation of tricalcium silicate. In cement production, the amount of fluorite added is generally 4% ~ 5% ~ 0.8% ~ 1%. Cement industry for fluorite quality requirements are not strict, the general CaF2 content can be more than 40%, the content of impurities requirements do not make specific provisions.

In the ceramic industry, fluorite is mainly used as porcelain glaze, and in the production process of porcelain glaze, fluorite can play the role of coloring and melting. If fluorite is added to the red glaze, the color can be bright and bright, and the amount of fluorite added to the ceramic production glaze is generally about 10% to 20%. It is also involved in the manufacture of enamel products.

Fluorite is also used in the enamel industry and cast stone production, and its addition amounts are 3% to 10% and 3%, respectively.

Fluorite Grinding Mill Recommendation

According to the division of different fineness, we recommend:
Raymond mill can be selected for 80-325 purpose firefly stone processing, and ultrafine grinding mill can be selected for 325-3000 mesh.

Raymond mill
Capacity:0.2~50 t/h
Feeding size:35 mm
Powder fineness:80~325 mesh

Features
1. Efficient and energy saving
In the case of the fineness of the finished product and the motor power are the same, the output is more than twice that of the air mill, stirring mill and ball mill.

2. High security
Because there is no rolling bearing and no screw in the grinding chamber, there is no problem that the bearing and its seal are vulnerable, and there is no problem that the screw is easy to loose and destroy the machine.

3. Longer life of wearing parts
The grinding roller and grinding ring are forged with special materials, which greatly improves the utilization degree. Generally up to more than one year, processing calcium carbonate, calcite, the service life of up to 2-5 years.

Step 4 Go green
Using pulse dust collector to capture dust, using silencer to reduce noise, with environmental protection, clean characteristics.

Ultrafine Grinding Mill
Capacity:0.5~45 t/h
Feeding size:≤20 mm
Powder fineness:325~3000 mesh

Features
1. The output is 40% higher than other mills.

2. The key parts of the mill are made of high-quality casting material, wear-resistant, and the utilization rate is up to 2-5 years.

3. Adjustable particle size:325-3000 mesh.

4. High security and reliability. The mill design is rigorous, no screw loose damage to the machine.

5. Fully closed system, is the ideal equipment for green environmental protection.

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