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Sequential lixivation and precipitation of metals from refractory ores by utilising variable oxidation reduction potentials and a variable PH system
Sequential lixivation and precipitation of metals from refractory ores by utilising variable oxidation reduction potentials and a variable PH system
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机译:利用可变的氧化还原电位和可变的PH系统从难熔矿石中依次浸提和沉淀金属
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摘要
This invention relates to an improved electrochemical process for winning platinum group and incidental precious metals from ore. The process utilizes a peroxide leach in combination with electricity to produce higher valency metals and comprises the following steps: combining ground ore with a solution comprising water with a selected amount of H2O2 and an anion source to form a slurry; applying a direct current while allowing the metal in the ore to leach into the solution for a selected period of time; filtering and clarifying the leached slurry to obtain a pregnant solution; and treating the pregnant solution to yield metal, metal salts or both.
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机译:本发明涉及从矿石中获得铂族和附带贵金属的改进的电化学方法。该方法利用过氧化物浸出与电结合产生高价金属,并包括以下步骤:将矿砂与含有水的溶液混合,该溶液中含有一定量的H 2 Sub> O 2 子与阴离子源形成浆液;施加直流电,同时允许矿石中的金属浸入溶液中一段选定的时间;过滤并澄清沥滤出的浆液,以获得母液;处理该母液以产生金属,金属盐或两者。
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