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Title:
METHOD FOR DECALCIFICATION OF MAGNESITE BY FLOTATION BY MEANS OF EGTA AND SHMP SYNERGISTIC INHIBITION
Document Type and Number:
WIPO Patent Application WO/2020/155232
Kind Code:
A1
Abstract:
A method for decalcification of magnesite by flotation by means of EGTA and SHMP synergistic inhibition, comprising grinding, pulping, and direct flotation roughing decalcification. In the pulping, an inhibitor EGTA solution is added to magnesite slurry; and in the direct flotation roughing decalcification, an inhibitor SHMP is added to the magnesite slurry having a pH value of 10 to 12, and a collector and a foaming agent are added to perform the direct flotation roughing decalcification. According to the method, the difference in floatability of magnesite and impurity mineral dolomite under the synergistic effect of EGTA and SHMP is used to remove the calcium minerals in magnesite, thereby improving the quality of magnesite.

Inventors:
SUN HAORAN (CN)
YIN WANZHONG (CN)
TANG YUAN (CN)
YANG BIN (CN)
HAN HUILI (CN)
YAO JIN (CN)
Application Number:
PCT/CN2019/075794
Publication Date:
August 06, 2020
Filing Date:
February 22, 2019
Export Citation:
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Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
B03D1/018; B03D101/06; B03D103/04
Domestic Patent References:
WO2018026796A12018-02-08
Foreign References:
CN109847947A2019-06-07
CN104874484A2015-09-02
CN104384027A2015-03-04
CN106345616A2017-01-25
US6007618A1999-12-28
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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