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前言铜、铅、锌和镍的硫化矿物冶炼的经济效益受新厂建设投资和现有工厂生产情况所影响。工厂建设投资和消费品物价指数的增长速度要比金属价格的增长速度快得多,从而使美国、加拿大和欧洲经济共同体的某些采矿业和金属生产行业的利润减少。这种情况反过来又阻碍了新的基础冶金过程的开发。技术改造现有的火法冶金工厂和改变操作运转情况,是解
Preface The economic benefits of sulphide mineral smelting of copper, lead, zinc and nickel are affected by investment in new plant construction and the production of existing plants. The factory construction investment and CPI growth rate is much faster than the metal price growth, so that the profits of some mining and metal production industries in the United States, Canada and the European Economic Community are reduced. This situation in turn hindered the development of a new basic metallurgical process. Technical transformation of the existing pyrometallurgical plant and change the operation of the operation is the solution