At present, the methods for producing aluminum fluoride in various countries in the world are mainly dry and wet methods. The dry process produces anhydrous aluminum fluoride with water up to 0.6%, but the dry process investment is generally several times that of the wet process. An annual output of 10,000 tons of anhydrous aluminum fluoride requires investment of hundreds of millions, and the requirements for raw materials are also Relatively high. Wet method is a more traditional method of production. The water content of anhydrous aluminum fluoride obtained is 7%. The amount of fluoride used in this method is large, it seriously pollutes the environment, and the index is low.
Fuzhou University uses two-stage dehydration technology to produce anhydrous aluminum fluoride. The process first dehydrates 55% aqueous aluminum fluoride to 6% at a temperature of 300°C, and then dehydrates at a temperature of about 600°C to obtain 0.5% anhydrous aluminum fluoride. Two-stage dehydration can use integrated fluidized bed technology or combined technology of fluidized bed and rotary kiln to achieve the cycle and high-efficiency heat exchange between dry materials and drying media. At the same time, the indicators of anhydrous aluminum fluoride produced can reach the international advanced level. .
Compared with the introduction of dry process technology, the two-stage dewatering process to produce anhydrous aluminum fluoride technology has an unparalleled price/performance ratio, which is particularly suitable for the transformation of existing aluminum fluoride plants in China. The sales price of anhydrous aluminum fluoride can generally be higher than the traditional wet sales price by more than 10%, and is approximately 500 yuan more. Annual output of anhydrous aluminum fluoride is 3,000 tons/year, and one year can create more benefits by 1.5 million yuan. The entire investment can be recovered in that year. At the same time, the new anhydrous aluminum fluoride product (water content is only 0.5%) is incomparably competitive with traditional aluminum fluoride, especially in line with the needs of foreign aluminum plants and can be exploited in the international market. Application and development. Therefore, anhydrous aluminum fluoride has a very broad market prospect both domestically and internationally.
Fuzhou University uses two-stage dehydration technology to produce anhydrous aluminum fluoride. The process first dehydrates 55% aqueous aluminum fluoride to 6% at a temperature of 300°C, and then dehydrates at a temperature of about 600°C to obtain 0.5% anhydrous aluminum fluoride. Two-stage dehydration can use integrated fluidized bed technology or combined technology of fluidized bed and rotary kiln to achieve the cycle and high-efficiency heat exchange between dry materials and drying media. At the same time, the indicators of anhydrous aluminum fluoride produced can reach the international advanced level. .
Compared with the introduction of dry process technology, the two-stage dewatering process to produce anhydrous aluminum fluoride technology has an unparalleled price/performance ratio, which is particularly suitable for the transformation of existing aluminum fluoride plants in China. The sales price of anhydrous aluminum fluoride can generally be higher than the traditional wet sales price by more than 10%, and is approximately 500 yuan more. Annual output of anhydrous aluminum fluoride is 3,000 tons/year, and one year can create more benefits by 1.5 million yuan. The entire investment can be recovered in that year. At the same time, the new anhydrous aluminum fluoride product (water content is only 0.5%) is incomparably competitive with traditional aluminum fluoride, especially in line with the needs of foreign aluminum plants and can be exploited in the international market. Application and development. Therefore, anhydrous aluminum fluoride has a very broad market prospect both domestically and internationally.
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