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A platform for research: civil engineering, architecture and urbanism
High-dosage desulfurized gypsum plaster and preparation method thereof
The invention discloses high-dosage desulfurized gypsum plaster and a preparation method thereof, and belongs to the technical field of building materials. The high-dosage desulfurized gypsum plaster is prepared from the following raw materials in parts by weight: 60 to 70 parts of semi-hydrated gypsum, 20 to 30 parts of dihydrate gypsum powder, 3 to 8 parts of high-activity micro powder, 3 to 6 parts of glass beads, 1 to 5 parts of composite fibers, 0.15 to 0.25 part of a water-retaining agent, 0.03 to 0.05 part of starch ether, 0.05 to 0.1 part of a wetting dispersant and 0.1 to 0.2 part of a retarder. The special wetting dispersant is adopted, after the wetting dispersant is dissolved in water, the dihydrate/hemihydrate gypsum powder can be dispersed, an isolation layer can be formed on the surface of desulfurized gypsum particles, coagulation acceleration of calcium sulfate hemihydrate by calcium sulfate dihydrate is delayed, and it is possible to prepare gypsum plaster through mixing of the dihydrate gypsum powder and the hemihydrate gypsum powder; a large amount of by-products of limestone-gypsum wet flue gas desulfurization of a thermal power plant can be consumed, and the product is simple in manufacturing process, low in cost, low in energy consumption, green, environment-friendly, excellent in construction performance and high in product strength; the mortar is mainly used for building indoor wall leveling treatment and is a good substitute of cement mortar.
本发明公开了一种高掺量脱硫石膏抹灰及其制备方法，属于建筑材料技术领域；高掺量脱硫石膏抹灰包括以下重量份数的原料：半水石膏60‑70份、二水石膏粉20‑30份、高活性微粉3‑8份、玻化微珠3‑6份、复合纤维1‑5份、保水剂0.15‑0.25份、淀粉醚0.03‑0.05份、润湿分散剂0.05‑0.1份、缓凝剂0.1‑0.2份。本发明采用特殊的润湿分散剂，溶于水中后不仅可对二水/半水石膏粉进行分散，还可以在脱硫石膏颗粒表面形成隔离层，延缓二水硫酸钙对半水硫酸钙的促凝，使二水石膏粉和半水石膏粉混掺制备石膏抹灰成为可能；可大量消耗热电厂石灰石‑石膏湿法烟气脱硫的副产物，制作工艺简单，成本低，能耗低，绿色环保，施工性能优良，产品强度高；主要用于建筑室内墙面找平处理，是水泥砂浆的良好替代品。
High-dosage desulfurized gypsum plaster and preparation method thereof
The invention discloses high-dosage desulfurized gypsum plaster and a preparation method thereof, and belongs to the technical field of building materials. The high-dosage desulfurized gypsum plaster is prepared from the following raw materials in parts by weight: 60 to 70 parts of semi-hydrated gypsum, 20 to 30 parts of dihydrate gypsum powder, 3 to 8 parts of high-activity micro powder, 3 to 6 parts of glass beads, 1 to 5 parts of composite fibers, 0.15 to 0.25 part of a water-retaining agent, 0.03 to 0.05 part of starch ether, 0.05 to 0.1 part of a wetting dispersant and 0.1 to 0.2 part of a retarder. The special wetting dispersant is adopted, after the wetting dispersant is dissolved in water, the dihydrate/hemihydrate gypsum powder can be dispersed, an isolation layer can be formed on the surface of desulfurized gypsum particles, coagulation acceleration of calcium sulfate hemihydrate by calcium sulfate dihydrate is delayed, and it is possible to prepare gypsum plaster through mixing of the dihydrate gypsum powder and the hemihydrate gypsum powder; a large amount of by-products of limestone-gypsum wet flue gas desulfurization of a thermal power plant can be consumed, and the product is simple in manufacturing process, low in cost, low in energy consumption, green, environment-friendly, excellent in construction performance and high in product strength; the mortar is mainly used for building indoor wall leveling treatment and is a good substitute of cement mortar.
本发明公开了一种高掺量脱硫石膏抹灰及其制备方法，属于建筑材料技术领域；高掺量脱硫石膏抹灰包括以下重量份数的原料：半水石膏60‑70份、二水石膏粉20‑30份、高活性微粉3‑8份、玻化微珠3‑6份、复合纤维1‑5份、保水剂0.15‑0.25份、淀粉醚0.03‑0.05份、润湿分散剂0.05‑0.1份、缓凝剂0.1‑0.2份。本发明采用特殊的润湿分散剂，溶于水中后不仅可对二水/半水石膏粉进行分散，还可以在脱硫石膏颗粒表面形成隔离层，延缓二水硫酸钙对半水硫酸钙的促凝，使二水石膏粉和半水石膏粉混掺制备石膏抹灰成为可能；可大量消耗热电厂石灰石‑石膏湿法烟气脱硫的副产物，制作工艺简单，成本低，能耗低，绿色环保，施工性能优良，产品强度高；主要用于建筑室内墙面找平处理，是水泥砂浆的良好替代品。
High-dosage desulfurized gypsum plaster and preparation method thereof
一种高掺量脱硫石膏抹灰及其制备方法
LIU FENGYAN (author) / FAN WENJING (author)
2023-03-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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