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对处理低品位、小型或复杂矿床,基于黄铜矿直接硫酸盐化,随后用水浸出的处理方法,被认为是最有吸引力的方法。在有蒸汽和氧气的情况下进行黄铜矿硫酸盐比研究,其处理类似于高温产生的风化条件。对不同参数诸如氧气和蒸汽的流量、温度和反应时间以及催化剂的添加进行了研究。发现,在未使用蒸汽时产生的SO2和CuO随氧的分压增加而增加。然而,在温度673-873k蒸汽和氧气混合使用时硫酸铜的形成比只使用氧要高,在有蒸汽和氧的硫酸盐化处理时,使用催化剂三氧化二铁有助于优化硫酸铜的转换。在温度773k有催化剂存在时,可获得82.32%的硫酸铜和7.5%的氧化铜的回收率,其总回收率达到89.82%.
The treatment of low-grade, small or complex deposits based on the direct sulphation of chalcopyrite followed by water leaching is considered the most attractive method. Chalcopyrite sulphate ratios were studied in the presence of steam and oxygen, with treatment similar to weathering conditions at high temperatures. The flow, temperature and reaction time of different parameters such as oxygen and steam as well as the addition of catalyst were investigated. It was found that SO2 and CuO generated when steam was not used increased with an increase in partial pressure of oxygen. However, the formation of copper sulfate at a temperature of 673 - 873 k with steam mixed with oxygen is higher than with only oxygen and the use of the catalyst ferric oxide helps optimize the conversion of copper sulfate during the sulphation with steam and oxygen . The recovery of 82.32% copper sulphate and 7.5% copper oxide was obtained in the presence of a catalyst at a temperature of 773k, with a total recovery of 89.82%.