Fluorite is not only a strategic mineral resource, but also an important source of fluorochemical raw materials. Fluorite is divided into acidic fluorite (CaF2 content > 97%), ceramic grade fluorite (CaF2 content 85%-95%) and metallurgical grade fluorite (CaF2 content 65%-85%). Fluorite is widely used in fluorochemicals and in the steel and building materials industries.
At present, the global fluorite foundation reserves are about 470 million tons, and the recoverable reserves are about 240 million tons (100% calcium fluoride). Among them, South Africa, Mexico, China and Mongolia have the highest fluorite reserves in the world, and the total mining volume accounts for about 4 times. Half of the world.
China is located in the metallogenic belt of the Pacific Rim, with more than 500 proven fluorite mining areas, mainly distributed in Hunan, Zhejiang, Jiangxi, Fujian, Anhui, Inner Mongolia, Hebei and other provinces. China's fluorite foundation reserves are as high as 110 million tons; but recoverable reserves are only 22 million tons, and are still declining.
The decline in China's fluorite recoverable reserves has led to increasingly stringent regulation and protection, resulting in a continuous decline in domestic fluorite supply in recent years. China's protection measures for fluorite resources include, but are not limited to, improving industry access barriers, raising resource taxes, and issuing mining quota control indicators. In addition, air pollution control operations have greatly affected the mining and plant selection of fluorite mines.
North China is the region with the most concentrated fluorite production capacity in China, accounting for 46% of the total production capacity. Inner Mongolia has a unique natural endowment. Inner Mongolia fluorite enterprises are the most concentrated, and most of the enterprises with an annual output of more than 200,000 tons are here. The fluorite production capacity in East China accounts for about 26% of the total production capacity, ranking second, because East China is a gathering place for anhydrous hydrofluoric acid, and hydrofluoric acid is the main downstream area of fluorite. The fluorite production enterprises with large production capacity in East China are Zhejiang Wuyi Shenlong and Jinshi resources.
At present, the downstream consumption of fluorite is still mainly fluorine chemicals, including hydrofluoric acid and aluminum fluoride, accounting for about 77%. Followed by the building materials industry, the demand for fluorite accounts for about 14%, while the steel industry accounts for about 7%.
In the chemical industry, fluorite is a key raw material for hydrofluoric acid, which is the basic raw material for fluorochemicals. In the chemical industry, about 2.35 tons of fluorite is consumed per ton of hydrofluoric acid; about 1.84 tons of fluorite is consumed per ton of aluminum fluoride. At present, the effective production capacity of anhydrous hydrofluoric acid in China is about 1.64 million tons, and the hydrofluoric acid production capacity in Jiangxi, Zhejiang, Fujian and other provinces ranks in the top three. China's anhydrous hydrofluoric acid production capacity idle rate is about 40%. In the next five years, the annual growth rate of anhydrous hydrofluoric acid will be less than 2%. In 2017, China's total aluminum fluoride production capacity was about 1.42 million tons, of which Huazhong ranked first, with a production capacity of about 40%; East China ranked second with a production capacity of about 27%.
In the field of building materials, fluorite is used in the glass industry, cement production and ceramics industries. Fluorite is used as a fluxing and sunscreen agent in the glass industry. However, the glass industry requires high fluorite content, iron oxide content of less than 0.2%, and annual consumption of fluorite is less than 100,000 tons. In cement production, the addition of fluorite as a mineralizer can reduce the sintering temperature of the charge and reduce fuel consumption. At the same time, it can increase the viscosity of the clinker in the sintering process and promote the formation of tricalcium silicate. Policy
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