Title:
USE OF REAGENT IN FLOTATION DECALCIFICATION OF MAGNESITE
Document Type and Number:
WIPO Patent Application WO/2020/133557
Kind Code:
A1
Abstract:
Use of a reagent in flotation decalcification of magnesite, comprising using inhibitor BAPTA for a flotation decalcification process of magnesite, and particularly grinding and ball-milling high-calcium and low-grade magnesite to obtain magnesite powder; placing the magnesite powder in a flotation device, adding deionized water and a solution of the inhibitor BAPTA in dimethylsulfoxide, mixing uniformly, forming a slurry, adding NaOH to the magnesite slurry at room temperature, adjusting the pH value to 10 to 12, adding a collecting agent sodium oleate, stirring uniformly, and then performing direct flotation roughing to obtain a low-calcium magnesite concentrate. The added inhibitor BAPTA has different floatabilities for magnesite and impurity mineral dolomite in magnesite, removing calcium minerals from magnesite, improving the quality of magnesite, which provides a new reagent for beneficiation and decalcification of high-calcium and low-grade magnesite.
Inventors:
YIN WANZHONG (CN)
SUN HAORAN (CN)
TANG YUAN (CN)
YAO JIN (CN)
YANG BIN (CN)
HAN HUILI (CN)
SUN HAORAN (CN)
TANG YUAN (CN)
YAO JIN (CN)
YANG BIN (CN)
HAN HUILI (CN)
Application Number:
PCT/CN2019/070183
Publication Date:
July 02, 2020
Filing Date:
January 03, 2019
Export Citation:
Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
B03D1/01; B03B1/00; B03B1/04; B03D1/002; B03D101/02; B03D101/06; B03D103/04
Foreign References:
| CN102189040A | 2011-09-21 | |||
| CN104384027A | 2015-03-04 | |||
| CN103272702A | 2013-09-04 | |||
| CN107774454A | 2018-03-09 | |||
| CN104437883A | 2015-03-25 | |||
| CN106345616A | 2017-01-25 | |||
| SU1632499A1 | 1991-03-07 |
Other References:
HU, XIAOXING ET AL.: "Application of Novel Collector BK434 to Remove Dolomite from Low-grade Magnesite Ore by Flotation", MINING RESEARCH AND DEVELOPMENT, vol. 36, no. 9, 30 September 2016 (2016-09-30), pages 24 - 26, ISSN: 1005-2763, DOI: 20190910163123A
CHEN, GONGLUN ET AL.,: "Effect of Solution Chemistry on Flotability of Magnesite and Dolomite", INT. J. MINER. PROCESS., vol. 74, 31 December 2004 (2004-12-31), pages 343 - 357, XP004604848, ISSN: 0301-7516, DOI: 20190910164654A
CHEN, GONGLUN ET AL.,: "Effect of Solution Chemistry on Flotability of Magnesite and Dolomite", INT. J. MINER. PROCESS., vol. 74, 31 December 2004 (2004-12-31), pages 343 - 357, XP004604848, ISSN: 0301-7516, DOI: 20190910164654A
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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