A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention belongs to the technical field of phosphogypsum and especially to a special retarder for phosphogypsum powder and a preparation method thereof. The special retarder is prepared from thefollowing raw materials in parts by weight: 10 to 20 parts of ammonium chloride, 30 to 40 parts of formaldehyde, 50 to 60 parts of water, 50 to 70 parts of phosphorus trichloride, 20 to 30 parts of awater reducing agent, 30 to 40 parts of carbohydrate and 20 to 30 parts of inorganic phosphate. The retarder has the advantage of good gypsum retarding effect.
本发明属于磷石膏技术领域，尤其涉及一种磷石膏粉专用缓凝剂及其制备方法，其原料按重量的配方如下：氯化铵10‑20份、甲醛30‑40份、水50‑60份、三氯化磷50‑70份、减水剂20‑30份、糖类化合物30‑40份、无机磷酸盐20‑30份。本发明具有对于石膏的缓凝效果好的优点。
The invention belongs to the technical field of phosphogypsum and especially to a special retarder for phosphogypsum powder and a preparation method thereof. The special retarder is prepared from thefollowing raw materials in parts by weight: 10 to 20 parts of ammonium chloride, 30 to 40 parts of formaldehyde, 50 to 60 parts of water, 50 to 70 parts of phosphorus trichloride, 20 to 30 parts of awater reducing agent, 30 to 40 parts of carbohydrate and 20 to 30 parts of inorganic phosphate. The retarder has the advantage of good gypsum retarding effect.
本发明属于磷石膏技术领域，尤其涉及一种磷石膏粉专用缓凝剂及其制备方法，其原料按重量的配方如下：氯化铵10‑20份、甲醛30‑40份、水50‑60份、三氯化磷50‑70份、减水剂20‑30份、糖类化合物30‑40份、无机磷酸盐20‑30份。本发明具有对于石膏的缓凝效果好的优点。
Special retarder for phosphogypsum powder
一种磷石膏粉专用缓凝剂
RAO JUNMING (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
C07F
Acyclische, carbocyclische oder heterocyclische Verbindungen, die andere Elemente als Kohlenstoff, Wasserstoff, Halogen, Sauerstoff, Stickstoff, Schwefel, Selen oder Tellur enthalten
,
ACYCLIC, CARBOCYCLIC, OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
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Utilization of weathered phosphogypsum as set retarder in Portland cement
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