Reinforced leaching method of gold in magnetite

• Main Authors: SONG BAOXU, WANG CHENGXING, TANG YUHE, QIU XIANYANG, HU ZHEN, FU HUA, LI HANWEN, LI PEILUN, WANG TAI, ZOU JIANJIAN
• Format: Patent
• Language: Chinese; English
• Published: 25.05.2016
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a reinforced leaching method of gold in magnetite. The method comprises the following steps: grinding gold-containing raw magnetite, grading to obtain the mineral material to be treated, carrying out low-intensity magnetic separation on the mineral material to be treated to obtain an alloy-containing strongly magnetic mineral, carrying out concentration and grading on the strongly magnetic mineral, grinding to obtain the mineral in which the particles with the particle size of -0.043mm account for 80.00-85.00%, and carrying out cyanation leaching treatment. The two-stage grinding technique is creatively adopted to enhance the grinding fineness, thereby avoiding the tank deposition of the magnetite due to high specific gravity, obviously enhancing the leaching rate of the magnetite-associated gold by opening the inclusion, further accurately determining the stirring intensity, leaching time and other key conditions, and ensuring the gold leaching rate of the gold-bearing magnetite to be