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燒結法生产氧化鋁过程中有两个水化学处理工序可能生成含水石榴石(3CaO·Al_2O_3·nSiO_2(6-2n)H_2O):熟料溶出和鋁酸盐溶液加石灰脫硅。压煮脫硅的白泥中存在含水石榴石早巳被多方证实,但对于在鋁酸盐熟料溶出条件下形成石榴石的問題,倒不十分清楚。有些人确认,β-二钙硅酸盐分解后分离出的氫氧化鈣与飽和二氧化硅的鋁酸鈉溶液在常压下相互反应,原則上不可能生成含水石榴石。而本文笔者认为,β-2CaO·SiO_2(霞石泥渣)与无苏打鋁酸鈉溶液或含较微量苏打的溶液相互反应时,会生成可变成分的含水鋁硅酸鈣3CaO·Al_2O_3·mSiO_2·nH_2O。文中介紹了用合成β-2CaO·SiO_2所做的試驗。試驗中所用的β-2CaO·SiO_2用合成法制成,铝
Hydrocarbon garnet (3CaO · Al_2O_3 · nSiO_2 (6-2n) H_2O) may be generated by two water chemical processes in the sintering process for the production of alumina: clinker dissolution and aluminate solution plus lime desilication. The presence of hydrous garnet in pressured, desiliconized lime mud has long been multifaceted, but it is not clear what is needed to form garnet in the presence of aluminate clinker. It has been confirmed by some that it is in principle impossible to generate hydrous garnet after the calcium aluminate solution separated from β-dicalcium silicate and saturated sodium silicate react with each other under atmospheric pressure. In this paper, the author believes that β-2CaO · SiO_2 (nepheline sludge) and soda-free sodium soda solution or solution containing a small amount of soda reaction, will generate a variable composition of hydrated calcium aluminate 3CaO · Al 2 O 3 · mSiO 2 · nH 2 O. The paper describes the synthesis of β-2CaO · SiO_2 by the test. Β-2CaO · SiO 2 used in the experiment was made by synthesis method, and aluminum was used