BENEFICIATION METHOD FOR HIGH CARBONATE REFRACTORY IRON ORE

WIPO Patent Application WO/2023/035537

A1

A beneficiation method for high carbonate refractory iron ore, comprising: a. performing X-ray transmission pre-separation on iron ore to obtain a pre-separated concentrate rich in siderite and pre-separated tailings; b. magnetizing and roasting the pre-separated concentrate rich in siderite, grinding the magnetized roasted product, and then carrying out low intensity magnetic separation to obtain a roasted magnetically separated concentrate and roasted magnetically separated tailings; and c. performing high intensity magnetic separation on the pre-separated tailings after grinding to obtain a high intensity magnetically separated concentrate and high intensity magnetically separated tailings, and performing reverse floatation on the high intensity magnetically separated concentrate to obtain a reverse-floated concentrate and reverse-floated tailings. The siderite in the iron ore is pre-separated by means of X-ray transmission pre-separation, so that the content of siderite in the flotation feed ore is reduced, and the siderite is prevented from attaching to the surface of red/magnetite particles to block contact between a flotation reagent and the red/magnetite particles, thereby improving the flotation effect.

FU YAFENG (CN)
HU ZHENTAO (CN)
WANG RUN (CN)
MAN XIAOFEI (CN)
LIU JIANJUN (CN)
DONG ZHENHAI (CN)
YANG XIAOFENG (CN)

PCT/CN2022/072321

March 16, 2023

January 17, 2022

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ANSTEEL BEIJING RES INSTITUTE (CN)

B07C5/346; B03B7/00

CN113877851A	2022-01-04
CN105268542A	2016-01-27
CN103316853A	2013-09-25
CN107119185A	2017-09-01
CN105772216A	2016-07-20
CN112642575A	2021-04-13
US20150048009A1	2015-02-19

TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)

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