平果氧化铝厂相对溶出率瓶颈问题分析及对策
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摘要
平果氧化铝厂采用的是拜耳法氧化铝生产工艺,其主要原料为一水硬铝石,其设计生产对铝土矿的要求是氧化铝含量大于56%、铝硅比(A/S)在12左右。由于公司所在地铝土矿的不断减少,且品位也大幅度降低,为了有效的延长氧化铝生产的年限,采取不同品位的铝土矿进行掺配使用。目前使用的铝土矿仅A/S=9±0.5,导致其相对溶出率下降。文章对拜耳法氧化铝生产工艺影响其相对溶出率的瓶颈问题进行分析,并制定相应的解决措施,实现了有效地提升相对溶出率、提高氧化铝生产效率,对氧化铝生产指导具有积极意义。
Pingguo Alumina Plant adopts Bayer alumina production process. Its main raw material is diaspore. Its design and production requirements for bauxite are that alumina content is more than 56% and aluminium-silicon ratio(A/S) is about 12. Due to the continuous reduction of bauxite in the location of the plant and the significant reduction of its grade, in order to effectively prolong the production life of alumina, different grade bauxites were mixed before use. The A/S of the bauxite used at present is only 9±0.5, which leads to the decrease of its relative dissolution rate. In this paper, the bottleneck problem of Bayer alumina production process affecting its relative dissolution rate was analyzed, and the corresponding solutions were formulated, which can effectively improve the relative dissolution rate and production efficiency of alumina, and has positive significance for the production guidance of alumina.
Pingguo Alumina Plant adopts Bayer alumina production process. Its main raw material is diaspore. Its design and production requirements for bauxite are that alumina content is more than 56% and aluminium-silicon ratio(A/S) is about 12. Due to the continuous reduction of bauxite in the location of the plant and the significant reduction of its grade, in order to effectively prolong the production life of alumina, different grade bauxites were mixed before use. The A/S of the bauxite used at present is only 9±0.5, which leads to the decrease of its relative dissolution rate. In this paper, the bottleneck problem of Bayer alumina production process affecting its relative dissolution rate was analyzed, and the corresponding solutions were formulated, which can effectively improve the relative dissolution rate and production efficiency of alumina, and has positive significance for the production guidance of alumina.
引文
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[4]党书勇.石灰质量对拜耳法氧化铝生产的影响[J].中国金属通报,2016(9):84-85.
[2]朱福星.氧化铝生产方法研究[J].世界有色金属,2017(1):151-152.
[3]毕诗文.氧化铝生产工艺[M].北京:化学工业出版社,2006.
[4]党书勇.石灰质量对拜耳法氧化铝生产的影响[J].中国金属通报,2016(9):84-85.