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在回转窑内将铝硅酸盐原料和石灰石、苏打一道烧结以生产氧化铝时,在加热过程中石灰石发生分解,炉料中各组分相互反应,生成碱金属铝酸盐、原硅酸钙及其它化合物。当接近炉料熔点时,物料开始收缩。炉料中石灰石的分解过程需要消耗大量的热,因此它决定着预烧带中物料的加热制度、热交换强度以及燃料的消耗。炉料中各组分的
When the aluminosilicate raw material is sintered together with limestone and soda in the rotary kiln to produce alumina, the limestone is decomposed during the heating process, and the components in the charge react with each other to form alkali metal aluminates, calcium orthosilicates and Other compounds. When it approaches the melting point of the charge, the material begins to shrink. The decomposition of limestone in the charge requires a large amount of heat and therefore determines the heating regime of the material in the charge, the heat exchange intensity and the fuel consumption. Burden in the various components