Acid aluminum slag production method for industrial aluminum fluoride The patent belongs to the fluoride salt industry in the chemical industry. The product is aluminum fluoride and ammonium fluoride, among which aluminum fluoride is an essential electrolyte in electrolytic cells of electrolytic aluminum plants. Fluoride is sold to the electrolytic aluminum plant and exports; ammonium fluoride is an important chemical raw material, mainly used for the extraction of rare metals.
For every ton of aluminum ingot produced by an electrolytic aluminum plant, about 30 kg of aluminum fluoride is required. In 2001, China produced about 2.8 million tons of aluminum-ammonium, and 5 million tons in 2003. It is estimated that it will reach 10 million tons in 2008 and the demand for aluminum fluoride will reach 300,000 tons. The demand for ammonium fluoride has increased year by year with the development of the rare metal industry. At the same time can export foreign exchange.
Ammonium fluoride can also be converted into ammonium bifluoride, which is used as the corrosive agent in the production of aluminum profiles. At present, the annual sales volume of ammonium bifluoride in the industry reaches 2-3 million tons.
For every ton of aluminum ingot produced by an electrolytic aluminum plant, about 30 kg of aluminum fluoride is required. In 2001, China produced about 2.8 million tons of aluminum-ammonium, and 5 million tons in 2003. It is estimated that it will reach 10 million tons in 2008 and the demand for aluminum fluoride will reach 300,000 tons. The demand for ammonium fluoride has increased year by year with the development of the rare metal industry. At the same time can export foreign exchange.
Ammonium fluoride can also be converted into ammonium bifluoride, which is used as the corrosive agent in the production of aluminum profiles. At present, the annual sales volume of ammonium bifluoride in the industry reaches 2-3 million tons.
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