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近来,在苏联及美国的一些技术刊物上,发表了许多关于金属硫化矿在氧化气氛中,用高温、高压进行浸出,以提取与回收其中的有用元素如铜、镍、锌、硫、触等的文献资料。高压氧浸出的基本原理,是利用金属的硫化矿,在密闭的高压釜中,维持适当的温度与氧分压,使金属的硫化物转变为硫酸鹽。关于硫化物转变成硫酸鹽的反应原理,在目前尚未完全确定,但在理论上存在有两种可能性:其一是氧同硫直接化合成硫酸鹽;另一种是硫化物首先氧化成金属的氧化物与SO_2,SO_2在触媒(重金属的氧化物)的作用下,变成SO_3,然
Recently, in some technical publications of the Soviet Union and the United States, many publications have been published on the leaching of metal sulfide minerals under high temperature and pressure in an oxidizing atmosphere in order to extract and recover useful elements such as copper, nickel, zinc, sulfur, etc. Literature. The basic principle of high pressure oxygen leaching is the use of metal sulfide ore, in a closed autoclave to maintain the appropriate temperature and partial pressure of oxygen, the metal sulfide into sulfate. The reaction principle of the conversion of sulphide to sulphate has not yet been completely determined, but there are theoretically two possibilities: one is the direct synthesis of sulphate from oxygen and sulfur; the other is the sulphide is first oxidized to metal Of the oxide and SO_2, SO_2 in the catalyst (heavy metal oxides) under the action of SO_3 into,