Environment-friendly low-toxicity gold extraction agent, preparation method thereof and gold leaching method thereof

Environment-friendly low-toxicity gold extraction agent, preparation method thereof and gold leaching method thereof

The invention relates to the technical field of gold extraction agents and hydrometallurgy, in particular to an environment-friendly low-toxicity gold extraction agent and a preparation method and a gold leaching method thereof. The gold extraction agent comprises urea, thiourea, alkali, ammonium sa...

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Hauptverfasser: LIU XICAI, CHI KAIHUA, XIE JIANPING, LU BANGFEI, LI XIAOYONG, ZHANG XIANGHU, YAO ZHANHUI, GUO HAOKUN, CHEN JINGYU, KANG WEIGANG, TAN NING
Format: Patent
Sprache:chi ; eng
Schlagworte:
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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creator LIU XICAI
CHI KAIHUA
XIE JIANPING
LU BANGFEI
LI XIAOYONG
ZHANG XIANGHU
YAO ZHANHUI
GUO HAOKUN
CHEN JINGYU
KANG WEIGANG
TAN NING
description The invention relates to the technical field of gold extraction agents and hydrometallurgy, in particular to an environment-friendly low-toxicity gold extraction agent and a preparation method and a gold leaching method thereof. The gold extraction agent comprises urea, thiourea, alkali, ammonium salt and a reducing agent, the mass ratio of the urea to the thiourea to the alkali to the ammonium salt to the reducing agent is (0-30): (5-45): (1-20): (0-10): (0-10). The gold leaching method of the gold extraction agent mainly comprises the following steps: a, preparing an agent; b, preparing ore; c, carrying out size mixing; d, adjusting the pH value of ore pulp; e, adjusting the oxidation potential of the ore pulp; and f, carrying out gold leaching. In the step a, the environment-friendly low-toxicity gold extraction agent is added into an alkaline solution to be completely dissolved; in the step c, size mixing is carried out on an ore sample, wherein the solid-liquid ratio is 1: (2-6); and in the step d, an al
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subjects CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
title Environment-friendly low-toxicity gold extraction agent, preparation method thereof and gold leaching method thereof
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