(A) metallurgical industry fluorite having a melting point refractory substance can be reduced to promote the flow of the slag, slag and metal separation that the well, in the smelting process of desulfurization, dephosphorization, malleable metal enhanced tensile strength and other characteristics. Thus, it is widely used as a flux steel smelting and ferroalloy production of iron and non-ferrous metal smelting process. Fluorite ore for smelting generally requires a calcium fluoride content of more than 65%, and also has certain requirements for the main impurity silica, and has strict limits on sulfur and phosphorus. The sulfur and phosphorus contents should not be higher than 0.3% and 0.08%, respectively. The quality of its products is carried out in accordance with the National Standard of the People's Republic of China GB8216-87 "Fluorite Block Mine" (Table 1). (ii) Chemical Industry Another important use of fluorite is in the production of hydrofluoric acid. Hydrofluoric acid is produced by reacting acid grade fluorite (fluorite concentrate) with sulfuric acid in a heating furnace or tank, and is divided into anhydrous hydrofluoric acid and hydrofluoric acid, which are both colorless liquids. , volatile, strong irritating odor and strong corrosive. It is a key raw material for the production of various organic and inorganic fluorides and fluorine. Competitive price black anodize aluminum CNC Milling parts from China factory. it is the process for cnc milling machining. Applicable Material---Aluminum/zinc alloy, iron, steel alloy, plastic, brass, steel, and stainless steel. Surface treatment---polishing, zinc plating, nickel plating, chrome plating, anodizing.All kinds of metal&plastic material is available. Engineering Product Cnc,Cnc Machining Engineering Product,OEM CNC Machined Precision Product Chongqing Jin Te Rui Machine Co.,Ltd , https://www.cncjtr.com
In the aluminum industry, hydrofluoric acid is used to produce aluminum fluoride, artificial cryolite, sodium fluoride and magnesium fluoride.
In the aerospace industry, hydrofluoric acid is mainly used to produce jet liquid propellants and missile jet fuel propellants. In the atomic energy industry, hydrofluoric acid is mainly used to make UF 4 , which is then fluorinated to form UF 6 , and 235 U is separated by gas diffusion or gas centrifugation.
Hydrofluoric acid is the basic raw material of organic fluorine chemical. It interacts with chloroform and carbon tetrachloride to produce fluorinated chlorocarbons and fluorocarbons with low toxicity and high chemical stability. It is used as a refrigerant and aerosol. Agents, intermediates of solvent polymers and fluorocarbon resins and elastomers.
Hydrofluoric acid is reacted with carbon tetrachloride to form Freon (usually indicated by F). In addition to being used as a refrigerant, Freon is also widely used in sprays, fire extinguishing agents, fluoroplastics, and the like.
In medicine, fluoroorganic compounds can also be used to produce fluorochemical anticancer drugs, fluorocortisone, and fluorocarbon artificial blood.
In the inorganic fluorination industry, insecticides, preservatives, protectants, additives, fluxes and antioxidants can be produced.
The chemical industry has high requirements for the quality of fluorite products. The CaF 2 content is generally required to be 93% to 98%. Silica and calcium carbonate are harmful impurities and must be strictly limited. At present, the quality requirements of China's fluorescein (fluorine) concentrate are implemented according to the GB5690-85 "Fluorite Concentrate" standard of the People's Republic of China (Table 2).
Use of fluorite mineral resources and technical and economic indicators (1)
The use of fluorite is very extensive (below). With the advancement of science and technology, the application prospects are more and more broad. At present mainly used for metallurgical, chemical and building materials industry of the three, followed by a light, optics, sculpture and defense industries. Therefore, according to the requirements of use, at present, there are four major series of fluorite mineral products in China, namely fluorite lump ore, fluorite (fluorine) concentrate, fluorite powder ore and optical and engraved fluorite.