The enhanced sintering alumina production process is a major scientific and technological achievement jointly researched and developed by China Aluminum Corporation Zhongzhou Branch and Central South University. The patented technology, through laboratory research and industrial practice, has developed a new sintering process that eliminates the traditional aluminum melting and desilication methods and forms a unique high-alkali low-calcium, high A/S, The “three high and one low†formula with high alumina clinker content improves the silicon content index of the sodium aluminate solution and solves some of the technical difficulties in the production process caused by the sintering of high alumina and silicon clinker, resulting in the formation of high-alumina ripeness. Sintering, high concentration of sodium aluminate solution red mud separation, high concentration of sodium aluminate solution desiliconization, high concentration of sodium aluminate solution decomposition and high concentration of carbon fraction mother liquor crystallizing evaporation as a core technology content of a whole set of new production technology. After the implementation, the alumina production of the Zhongzhou branch achieved a “six-year six-year paceâ€, from 207,600 tons in 1998, 312,600 tons in 1999, 441,200 tons in 2000 to 950,000 tons in 2003, an average annual increase of 10%. More than 10,000 tons, the average annual output value of nearly 700 million, the investment rate of return has reached 66.4%, calculated (95 million tons of alumina / year), the annual increase of more than 200 million yuan benefit. The enhanced sintering alumina production process is a major scientific and technological achievement jointly researched and developed by China Aluminum Corporation Zhongzhou Branch and Central South University. The patented technology, through laboratory research and industrial practice, has developed a new sintering process that eliminates the traditional aluminum melting and desilication methods and forms a unique high-alkali low-calcium, high A/S, The “three high and one low†formula with high alumina clinker content improves the silicon content index of the sodium aluminate solution and solves some of the technical difficulties in the production process caused by the sintering of high alumina and silicon clinker, resulting in the formation of high-alumina ripeness. Sintering, high concentration of sodium aluminate solution red mud separation, high concentration of sodium aluminate solution desiliconization, high concentration of sodium aluminate solution decomposition and high concentration of carbon fraction mother liquor crystallizing evaporation as a core technology content of a whole set of new production technology. After the implementation, the alumina production of the Zhongzhou branch achieved a “six-year six-year paceâ€, from 207,600 tons in 1998, 312,600 tons in 1999, 441,200 tons in 2000 to 950,000 tons in 2003, an average annual increase of 10%. More than 10,000 tons, the average annual output value of nearly 700 million, the investment rate of return has reached 66.4%, calculated (95 million tons of alumina / year), the annual increase of more than 200 million yuan benefit.
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