萤石有两种不同等级的产品：

Acid grade fluorite – a high-purity material used in the chemical industry, containing over 97% calcium fluoride and mainly used for the production of hydrofluoric acid.

Hydrofluoric acid is an important intermediate in the fluorine chemical industry, mainly used in the production of fluorine chemical products, including refrigerants, aluminum fluoride, fluorine-containing polymers (fluororesins, fluororubber, fluorocoatings), electronic grade hydrofluoric acid (semiconductor cleaning agents), fluoride salts, etc. The fields involving new materials and new energy, such as fluoropolymers, fluorinated fine chemicals, and fluoride salts, are developing rapidly, and the proportion of consumption is expected to increase in the future.

冶金级萤石--含有75%以上的氟化钙。这种材料大部分用于生产铁、钢和其他金属。萤石可以作为助熔剂，从熔融金属中去除硫和磷等杂质，提高炉渣的流动性。每吨金属生产需要9至27公斤的萤石。

High grade fluorite ore – containing over 65% calcium fluoride. Widely used in metal smelting, ceramics, cement production, and other industries. The production of these fields requires a stable source of calcium fluoride, and high-grade fluorite ore perfectly meets this demand. As an “industrial monosodium glutamate”, the value of fluorite lies not only in its chemical composition, but also in its strategic position as the cornerstone of fluorine chemical industry. With the rise of emerging industries such as new energy and semiconductors, the demand structure of fluorite will continue to optimize, promoting the industry to extend towards high value-added fields.

The post Fluorite classification application first appeared on 金石.

Fluorite exists in various geological environments, such as sedimentary modified fluorite deposits, hydrothermal filled fluorite deposits, and sedimentary associated fluorite deposits; However, it most commonly appears in the form of vein like fillings in rocks that have undergone hydrothermal activity. These veins typically contain metallic ores, which may include sulfides of tin, silver, zinc, copper, and other metals. Commercial fluorite is classified based on its quality. The grade depends on the content of fluorite and related impurities such as calcite, quartz, barite, sulfur, arsenic, and lead. The levels are as follows:

Acid grade – containing at least 97% fluorite, with the remaining 3% being various impurities

Ceramic grade – containing 85% -96% fluorite, with the remaining 4% -15% being various impurities

Metallurgical grade – containing 60% to 84% fluorite, with the remaining 16% to 40% being various impurities

The grade of fluorite determines its ultimate use. Almost two-thirds of fluorite is acid grade, mainly used for producing hydrofluoric acid (HF), while about one-third of fluorite is metallurgical grade, mainly used as a flux in steelmaking and aluminum production. A small amount of fluorite is of ceramic grade and is used to manufacture special glass, ceramics, and enamel products. HF is a highly corrosive acid that can dissolve glass and many other materials, mainly oxides. Due to its high corrosiveness, it is used in many industries such as chemistry, mining, refining, glass finishing, silicon chip manufacturing, and cleaning. About 60% of global HF production is used for various fluorinated compound applications such as refrigerants, non stick coatings, medical propellants, and aesthetics, while a small amount of HF is used for petroleum alkylation and as an acid wash for metal etching in the electronics industry. In addition, HF is also used for cleaning silicon wafers, etching glass, and polishing and frosted glass production. Fluorite, as an important non-metallic mineral resource, has a wide range of applications in industries, optics, handicrafts, and other fields due to its unique physical and chemical properties. With the development of technology, fluorite has broad application prospects in new energy, new materials and other fields, but its resource protection and sustainable development also face challenges.

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