PYRRHOTITE MINERAL PROCESSING METHOD USING LOW-ALKALI PROCESS OF FLOTATION FOLLOWED BY MAGNETIC SEPARATION

WIPO Patent Application WO/2021/037243

A1

A pyrrhotite mineral processing method using a low-alkali process of flotation followed by magnetic separation, comprising the following steps: performing a coarse copper particle flotation process on pyrrhotite ores; performing a secondary fine copper particle flotation process on the obtained copper flotation concentrate; performing a copper flotation scavenging process on tailings obtained from the coarse copper particle flotation process; performing a coarse sulfur particle flotation process on tailings obtained from the copper flotation scavenging process; performing a sulfur flotation scavenging process on tailings obtained from the coarse sulfur particle flotation process; and performing a magnetic separation process on tailings obtained from the sulfur flotation scavenging process, so as to obtain iron ore concentrate. The method applies in particular to pyrrhotite having low copper content and high ferrous sulfide content, and uses a low-alkali process of flotation followed by magnetic separation; valuable metals such as copper, iron, sulfur and pyrrhotite in copper-iron ores can be fully recovered.

QIU TINGSHENG (CN)
CHEN JIANGAN (CN)
FANG XIHUI (CN)
KUANG JINGZHONG (CN)
YU WEN (CN)
AI GUANGHUA (CN)

PCT/CN2020/112257

March 04, 2021

August 28, 2020

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UNIV JIANGXI SCI & TECHNOLOGY (CN)

B03C1/00; B03D1/02; B03D1/08

CN110586337A	2019-12-20
CN106423537A	2017-02-22
CN105274353A	2016-01-27
CN102266818A	2011-12-07
CN108672101A	2018-10-19
CN108906312A	2018-11-30
JP2013147702A	2013-08-01
FR2608462A3	1988-06-24

HAIKOU HEIP INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)

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