Title:
CAPSULE SLOW-RELEASE COLLECTOR FOR COAL FLOTATION, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/124643
Kind Code:
A1
Abstract:
Disclosed in the present invention are a capsule slow-release collector for coal flotation, and a preparation method therefor and an application thereof. Components of the collector comprise a collecting agent, a functional agent, and an emulsifier; components of the collecting agent comprise diesel oil, pine oil, and an oleic acid-based ester; the functional agent is prepared by mixing a sodium silicate solution and a sulfuric acid solution in proportion; the emulsifier is a nonionic surfactant. Compared with a conventional collector, the capsule slow-release collector in the present invention has a special capsule structure and has double functions of collection and selective inhibition; when the collector capsule shell interacts with hydrophobic sites of coal molecules, the original capsule structure collapses, and the inhibitor component in the capsule core is released; when the collector does not interact with coal molecules, the inhibitor is temporarily stored in the collector. Slow release of the inhibitor avoids excessive consumption in a short time, the problem that the inhibitory effect becomes poor as the concentration of the inhibitor decreases is alleviated, the capsule slow-release collector achieves higher selectivity and has a wide application prospect.
Inventors:
GUI XIAHUI (CN)
XING YAOWEN (CN)
WANG YUSAI (CN)
WANG LEI (CN)
XU MENGDI (CN)
XIA YANGCHAO (CN)
CHE TAO (CN)
MENG FANCAI (CN)
LI YONGGAI (CN)
XING YAOWEN (CN)
WANG YUSAI (CN)
WANG LEI (CN)
XU MENGDI (CN)
XIA YANGCHAO (CN)
CHE TAO (CN)
MENG FANCAI (CN)
LI YONGGAI (CN)
Application Number:
PCT/CN2022/133063
Publication Date:
July 06, 2023
Filing Date:
November 21, 2022
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
B03D1/018; B03D101/02
Foreign References:
| CN114471956A | 2022-05-13 | |||
| CN110142143A | 2019-08-20 | |||
| CN109804051A | 2019-05-24 | |||
| CN103056033A | 2013-04-24 | |||
| CN101722111A | 2010-06-09 | |||
| US4222861A | 1980-09-16 |
Other References:
"Master's Thesis", 1 June 2019, TAIYUAN UNIVERSITY OF TECHNOLOGY, CN, article REN, CONG: "Research on coal slime flotation compound collecting agent based on methyl oleate", pages: 1 - 85, XP009546874
Attorney, Agent or Firm:
JW IP LAW FIRM (CN)
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