Title:
BENEFICIATION METHOD FOR PREPARING ULTRAPURE IRON ORE CONCENTRATE FROM MAGNETITE CONCENTRATES
Document Type and Number:
WIPO Patent Application WO/2022/052718
Kind Code:
A1
Abstract:
Disclosed is a beneficiation method for preparing an ultrapure iron concentrate from a magnetite concentrate, the method comprising: carrying out respectively one-stage grinding-grading-one-stage low intensity magnetic separation, concentration and dehydration of one-stage low intensity magnetic separation concentrate, two-stage grinding-grading, two-stage low intensity magnetic separation roughing-demagnetization-two-stage low intensity magnetic separation cleaning, demagnetization of two-stage low intensity magnetic separation clenaing concentrate-concentration operation: demagnetizing the obtained two-stage low intensity magnetic separation cleaning concentrate, and then carrying out concentration and reverse flotation operation, so as to finally obtain an ultrapure iron concentrate with TFe > 72.0％, a SiO 2 content of ≤0.20％ and an acid non-soluble substance of ≤0.17％, and a high-purity iron concentrate with TFe > 70.7％. A collector for the reverse flotation operation of the present invention is pepared by heating and modifying dodecylamine and a glacial acetic acid solution at a mass ratio of 4 : 1. According to the method of the present invention, the beneficiation process flow is flexible, stable and reliable, has a strong applicability, and is efficient and energy-saving. The flotation reagent has excellent performances, such as simple preparation, wide sources, small dosage, good selectivity, and environmental friendliness.
Inventors:
SHENG JINJIE (CN)
GAO CHUNQING (CN)
WANG HAILIANG (CN)
LUO HONGZHEN (CN)
HOU GENGHE (CN)
YANG RENXIN (CN)
GAO CHUNQING (CN)
WANG HAILIANG (CN)
LUO HONGZHEN (CN)
HOU GENGHE (CN)
YANG RENXIN (CN)
Application Number:
PCT/CN2021/111869
Publication Date:
March 17, 2022
Filing Date:
August 10, 2021
Export Citation:
Assignee:
SINOSTEEL MAANSHAN GENERAL INSTITUTE OF MINING RES CO LTD (CN)
HUAWEI NATIONAL ENGINEERING RES CENTER OF HIGH EFFICIENT RECYCLE AND UTILIZ (CN)
ENGINEERING INVESTIG & DESIGN INSTITUTE OF SINOSTEEL MIMR CO LTD (CN)
HUAWEI NATIONAL ENGINEERING RES CENTER OF HIGH EFFICIENT RECYCLE AND UTILIZ (CN)
ENGINEERING INVESTIG & DESIGN INSTITUTE OF SINOSTEEL MIMR CO LTD (CN)
International Classes:
B03B9/00; B03B7/00; B03D1/008; B03D1/01; B03D101/02; B03D103/04
Domestic Patent References:
| WO2020097667A1 | 2020-05-22 |
Foreign References:
| CN112090578A | 2020-12-18 | |||
| CN111905918A | 2020-11-10 | |||
| CN110898958A | 2020-03-24 | |||
| CN101869874A | 2010-10-27 | |||
| CN104826728A | 2015-08-12 | |||
| CN102527492A | 2012-07-04 | |||
| CN109127122A | 2019-01-04 | |||
| US4319988A | 1982-03-16 |
Other References:
LIU, JIE ET AL.: "Experimental Study on Preparation of Super-Grade Iron Concentrate)", PROCEEDINGS OF THE 11TH CSM STEEL CONGRESS – S01. IRON SMELTING AND RAW MATERIALS, BEIJING ON NOV. 21-22, 2017. , 21 November 2017 (2017-11-21), CN, pages 1 - 8, XP009535017, ISBN: 7502476903
LI MINGYU, HUANG JINFU;JIANG LIJUN;WANG WENLONG;WAN JIAGUO: "Experiment Study on Producing Super-Grade Iron Concentrate Using an Iron Ore from Fushun", MODERN MINING, 25 July 2020 (2020-07-25), pages 116 - 120+135, XP055911509, DOI: 10.3969/j.issn.1674-6082.2020.07.034
ZOU WENBO, XIA LIUYIN , ZHONG HONG: "Study on the Flotation Performance of Quartz and Magnetite with Gemini Collector", METAL MINE, MAANSHAN KUANGSHAN YANJIUYUAN,, CN, 15 June 2011 (2011-06-15), CN , pages 70 - 80+92, XP055911513, ISSN: 1001-1250
LI MINGYU, HUANG JINFU;JIANG LIJUN;WANG WENLONG;WAN JIAGUO: "Experiment Study on Producing Super-Grade Iron Concentrate Using an Iron Ore from Fushun", MODERN MINING, 25 July 2020 (2020-07-25), pages 116 - 120+135, XP055911509, DOI: 10.3969/j.issn.1674-6082.2020.07.034
ZOU WENBO, XIA LIUYIN , ZHONG HONG: "Study on the Flotation Performance of Quartz and Magnetite with Gemini Collector", METAL MINE, MAANSHAN KUANGSHAN YANJIUYUAN,, CN, 15 June 2011 (2011-06-15), CN , pages 70 - 80+92, XP055911513, ISSN: 1001-1250
Attorney, Agent or Firm:
MA'ANSHAN CITY JINQIAO PATENT AGENT LTD. (CN)
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