NOUFERROUS METALLURGICAL EQUIPMENT

At present, bauxite resources are scarce, and the use of bauxite in alumina plants is complex, low grade and high carbon content in ore, resulting in increased unit energy consumption and reduced production capacity. Meanwhile, the accumulation of sodium carbonate in alumina production has adverse effects on multiple processes such as dissolution, settlement, decomposition and evaporation, so the work of carbon emission and impurity removal is imminent. At present, the aluminum oxide plant mainly adopts evaporation forced effect salt-discharge causticization process to remove sodium carbonate system, but the process is complicated, the carbon emission cost is high and the carbon emission capacity is limited. Through technical transformation of the side flow causticization series vertical leaf filter carbon removal process, the comprehensive carbon removal capacity of the system is improved, the types of bauxite are expanded, and the production cost is further reduced.