Title:
MACHINE-SPRAYING SURFACE GYPSUM PLASTER HAVING PURIFICATION FUNCTION AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/199400
Kind Code:
A1
Abstract:
A machine-spraying surface gypsum plaster having a purification function, comprising pre-treatment phosphogypsum powder, a curing agent, water, a retarder, a water retaining agent, and a cleaning agent, optionally further comprising an accelerator. The mass ratio of the pre-treatment phosphogypsum powder, the curing agent, water, the retarder, the water retaining agent, and the cleaning agent is 100:(1.5-5):(200-300):(2-5):(5-25):(0.5-2), and provided is a preparation method of the gypsum plaster. The machine-spraying surface gypsum plaster eliminates the harm of soluble phosphorus and fluorine in phosphogypsum, solidifies harmful ions in the phosphogypsum, and implements the reuse of the phosphogypsum.
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Inventors:
YIN DONGJIE (CN)
WANG PENGQI (CN)
TAN DANJUN (CN)
JIAN MING (CN)
WANG PENGQI (CN)
TAN DANJUN (CN)
JIAN MING (CN)
Application Number:
PCT/CN2019/094250
Publication Date:
October 08, 2020
Filing Date:
July 01, 2019
Export Citation:
Assignee:
BEIJING NEW BUILDING MAT PLC (CN)
International Classes:
C04B28/14; C04B11/26
Domestic Patent References:
| WO2017198930A1 | 2017-11-23 |
Foreign References:
| CN101456686A | 2009-06-17 | |||
| CN106431034A | 2017-02-22 | |||
| CN105130355A | 2015-12-09 | |||
| CN108793920A | 2018-11-13 | |||
| FR2484399A1 | 1981-12-18 |
Other References:
JIANG, QIGANG: "Non-official translation: Using Waste Phosphogypsum to Pepare Plastering Gypsum", CHINA RESOURCES COMPREHENSIVE UTILIZATION, no. 1, 25 January 2003 (2003-01-25), DOI: 20191212170858Y
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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