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用结晶法从锡中除铅运用于大规模生产,在我国已有三十多年历史,是我国各炼锡厂行之有效的一种方法。结晶法同其它除铅方法相比,具有设备简单、燃料消耗少,不加药剂,成本低,利于回收有价金属等优点。但也存在过程不连续,机械化程度低,劳动强度较大,生产周期长等缺点,不甚适应飞跃发展的社会主义冶金事业的需要。为此,我们从1955年开始研究连续结晶过程,探索连续结晶的合理机械设备,1963年初见成效。1964年,柳州冶炼厂在此试验基础
With the crystallization method from the tin in the use of lead in large-scale production, in our country has more than 30 years of history, is China’s tin refining plant effective method. Compared with other methods of removing lead, the crystallization method has the advantages of simple equipment, less fuel consumption, no medicament, low cost, and favorable recovery of valuable metals. However, there are also shortcomings of discontinuous processes, low degree of mechanization, large labor intensity and long production cycle, which are not suitable for the rapid development of the socialist metallurgy. To this end, we began in 1955 to study the continuous crystallization process, to explore the continuous crystallization of reasonable machinery and equipment, early results in 1963. In 1964, Liuzhou Smelter based on this test