Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing semi-hydrated gypsum from flue gas desulfurization gypsum and application of semi-hydrated gypsum
The invention discloses a method for preparing semi-hydrated gypsum from flue gas desulfurization gypsum and application of the semi-hydrated gypsum. The preparation method comprises the following steps: S1, mechanical treatment; the method comprises the following steps: grinding and sieving an auxiliary product gypsum of the flue gas industry of a power plant to obtain gypsum powder with the particle size of 90-100 mu m; s2, carrying out crystallization treatment; the preparation method comprises the following steps: taking 5-8 parts of gypsum powder, 1-2 parts of carbon powder and 1-3 parts of a modified crystal modifier, putting into 10-15 parts of water, heating to 40-70 DEG C, stirring for 2-5 minutes, and uniformly dispersing to obtain a devitrification solution with a free fiber aggregate; s3, treating a solid-phase fiber aggregate; taking 3-4 parts of NdMnO3 as a negative thermal expansion material, adding the NdMnO3 into the devitrification solution, coating the NdMnO3 on the surface of the fiber aggregate through a high-temperature solid-phase method, and heating and stirring to obtain a gypsum solution with a solid-phase fiber aggregate; s4, high-strength fiber mixing treatment; the adhesive provided by the invention has the effects of high strength and strong cohesive force.
本发明公开了一种用烟气脱硫石膏制备半水石膏的方法及其应用，其制备步骤包括：S1:机械处理；取电厂烟气工业附属产物石膏，进行研磨处理，过筛，并得到粒度为90‑100μm的石膏粉末；S2:析晶处理；取5‑8份石膏粉末、1‑2份碳粉以及1‑3份改性转晶剂，置于10‑15份水中加热至40‑70℃，搅拌2‑5min均匀分散后，获得带有游离状纤维集合体的析晶溶液；S3:固相纤维集合体处理；取3‑4份NdMnO3作为负热膨胀材料加入到析晶溶液中，通过高温固相法，将NdMnO3包覆在纤维集合体表面，加热翻拌后获得带有固相纤维集合体的石膏溶液；S4:高强纤维混合处理；本发明具有强度高，粘结力强的效果。
Method for preparing semi-hydrated gypsum from flue gas desulfurization gypsum and application of semi-hydrated gypsum
The invention discloses a method for preparing semi-hydrated gypsum from flue gas desulfurization gypsum and application of the semi-hydrated gypsum. The preparation method comprises the following steps: S1, mechanical treatment; the method comprises the following steps: grinding and sieving an auxiliary product gypsum of the flue gas industry of a power plant to obtain gypsum powder with the particle size of 90-100 mu m; s2, carrying out crystallization treatment; the preparation method comprises the following steps: taking 5-8 parts of gypsum powder, 1-2 parts of carbon powder and 1-3 parts of a modified crystal modifier, putting into 10-15 parts of water, heating to 40-70 DEG C, stirring for 2-5 minutes, and uniformly dispersing to obtain a devitrification solution with a free fiber aggregate; s3, treating a solid-phase fiber aggregate; taking 3-4 parts of NdMnO3 as a negative thermal expansion material, adding the NdMnO3 into the devitrification solution, coating the NdMnO3 on the surface of the fiber aggregate through a high-temperature solid-phase method, and heating and stirring to obtain a gypsum solution with a solid-phase fiber aggregate; s4, high-strength fiber mixing treatment; the adhesive provided by the invention has the effects of high strength and strong cohesive force.
本发明公开了一种用烟气脱硫石膏制备半水石膏的方法及其应用，其制备步骤包括：S1:机械处理；取电厂烟气工业附属产物石膏，进行研磨处理，过筛，并得到粒度为90‑100μm的石膏粉末；S2:析晶处理；取5‑8份石膏粉末、1‑2份碳粉以及1‑3份改性转晶剂，置于10‑15份水中加热至40‑70℃，搅拌2‑5min均匀分散后，获得带有游离状纤维集合体的析晶溶液；S3:固相纤维集合体处理；取3‑4份NdMnO3作为负热膨胀材料加入到析晶溶液中，通过高温固相法，将NdMnO3包覆在纤维集合体表面，加热翻拌后获得带有固相纤维集合体的石膏溶液；S4:高强纤维混合处理；本发明具有强度高，粘结力强的效果。
Method for preparing semi-hydrated gypsum from flue gas desulfurization gypsum and application of semi-hydrated gypsum
一种用烟气脱硫石膏制备半水石膏的方法及其应用
JIANG CHENGQIAN (Autor:in)
05.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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