Quick hot pressing oxidation pretreatment technology for microgranular sulfide type gold ore
A sulfide-type, hot-pressed oxidation technology, applied in the field of metallurgy, can solve the problems of long production cycle, large changes in gold recovery rate, difficulty in meeting large-scale production, etc., and achieve the effect of reducing residence time and increasing speed
Active Publication Date: 2016-06-08
中国有色桂林矿产地质研究院有限公司
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Abstract
The invention discloses a quick hot pressing oxidation pretreatment technology for a microgranular sulfide type gold ore. The quick hot pressing oxidation pretreatment technology comprises the specific steps of enabling the microgranular sulfide type gold ore to be formed into ore pulp, and regulating the pH value of the ore pulp to be less than or equal to 4.0; placing the obtained ore pulp in a hot pressing reaction kettle, enabling oxygen-containing atmosphere to be inlet into the reaction kettle, controlling the partial pressure of oxygen to be 0.01-3MPa, rising the temperature to 120-250 DEG C, enabling liquid in the kettle to generate bubbles under a stirring condition, performing oxidation treatment under the stirring condition so as to form oxidized ore pulp, and controlling the time of the oxidation treatment to be longer than or equal to 2 minutes; and performing solid-liquid separation on the obtained oxidized ore pulp so as to obtain oxidation slags and oxidation liquid, and extracting gold from the obtained oxidation slag by an existing conventional cyanidation gold-leaching technology. The technology disclosed by the invention is short in time consumption, and when the gold is extracted from the oxidation slags processed by the pretreatment technology by using a conventional cyanidation gold-leaching technology, the gold leaching and recovering rate is 89% or above.
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SlagGold ore +5
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