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处理金银矿石时,用选矿法富集的粗精矿,往往需要氰化处理。自然金的氰化,一般可得到良好的指标,但对含有相当数量的金银碲化物(如针碲金银矿 AuAgTe4的矿石,必须添加强氧化剂,才能使金、银变为 Au~+和 Ag~+,它们再与 CN~-络合成为络离子,从而提高氰化率。对河南银洞坡金矿浮选粗精矿进行氰化处理时,在过程中加入高锰酸钾,取得较好效果。该金矿石系一难选地表氧化矿,受到程度不同的风化和铁染。主要金属矿物是:自然金、针碲金
When dealing with gold and silver ore, concentrate concentrate enriched by the beneficiation method often requires cyanidation. Natural gold cyanide, generally get a good indicator, but for a considerable amount of gold and silver tellurides (such as silver telluride ore AuAgTe4 ore, you must add a strong oxidant, gold and silver can be made into Au ~ + and Ag ~ +, which are complexed with CN ~ - as complex ions to improve the cyanidation rate.When the gold concentrate is flotation, the potassium permanganate The effect is better.The gold ore is a refractory surface oxide ore, by varying degrees of weathering and iron dye.The main metal minerals are: natural gold, tellurium gold