A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for curing chromium-containing solid wastes
The invention discloses a method for curing chromium-containing solid wastes. The method comprises the following steps: (1) refining the chromium-containing solid wastes until the particle size is less than 1 mm, adding water, and mixing and stirring to prepare a slurry A with the solid content of 15-20%; (2) taking and pumping 100 parts by mass of the slurry A into a wet mill, and carrying out wet milling until the particle size is 1-2 [mu]m to obtain a slurry B; (3) adding 20-25 parts by mass of steel slag powder with the particle size of 20-60 [mu]m and 1-5 parts by mass of a plasticizer into the slurry B, and carrying out wet grinding again to obtain a slurry C with the particle size of 2-4 [mu]m; (4) gradually adding 2-10 parts by mass of industrial byproduct gypsum powder into the slurry C, and adjusting the pH value of the slurry to 7-11 to obtain a slurry D; and (5) partially or completely replacing a cementing material with the slurry D for concrete production. Steel slag serving as a reducing raw material cooperates with wet grinding to treat the chromium-containing solid wastes, the treated chromium-containing solid wastes are applied to building material production, thechromium element can be effectively sealed and stored, and economic benefits can be created.
本发明公开了一种固化含铬固体废弃物的方法，包括步骤：（1）细化含铬固体废弃物至粒径小于1mm，再加水混合搅拌配制固含量为15~20%的浆体A；（2）取100质量份浆体A泵入湿磨机中湿磨至粒径为1~2μm，得浆体B；（3）向浆体B中添加20~25质量份、粒径20~60μm的钢渣粉和1~5质量份的塑化剂，再次湿磨，得到粒径2~4μm的浆体C；（4）向浆体C中逐步加入2~10质量份的工业副产石膏粉，调节浆体pH值达到7~11，得浆体D；（5）将浆体D部分或全部代替胶凝材料，用于混凝土生产。本发明以钢渣为还原原料配合湿法研磨处置含铬固体废弃物，将处置后的含铬固体废弃物应用于建材生产，可将铬元素有效封存，还能创造经济效益。
Method for curing chromium-containing solid wastes
The invention discloses a method for curing chromium-containing solid wastes. The method comprises the following steps: (1) refining the chromium-containing solid wastes until the particle size is less than 1 mm, adding water, and mixing and stirring to prepare a slurry A with the solid content of 15-20%; (2) taking and pumping 100 parts by mass of the slurry A into a wet mill, and carrying out wet milling until the particle size is 1-2 [mu]m to obtain a slurry B; (3) adding 20-25 parts by mass of steel slag powder with the particle size of 20-60 [mu]m and 1-5 parts by mass of a plasticizer into the slurry B, and carrying out wet grinding again to obtain a slurry C with the particle size of 2-4 [mu]m; (4) gradually adding 2-10 parts by mass of industrial byproduct gypsum powder into the slurry C, and adjusting the pH value of the slurry to 7-11 to obtain a slurry D; and (5) partially or completely replacing a cementing material with the slurry D for concrete production. Steel slag serving as a reducing raw material cooperates with wet grinding to treat the chromium-containing solid wastes, the treated chromium-containing solid wastes are applied to building material production, thechromium element can be effectively sealed and stored, and economic benefits can be created.
本发明公开了一种固化含铬固体废弃物的方法，包括步骤：（1）细化含铬固体废弃物至粒径小于1mm，再加水混合搅拌配制固含量为15~20%的浆体A；（2）取100质量份浆体A泵入湿磨机中湿磨至粒径为1~2μm，得浆体B；（3）向浆体B中添加20~25质量份、粒径20~60μm的钢渣粉和1~5质量份的塑化剂，再次湿磨，得到粒径2~4μm的浆体C；（4）向浆体C中逐步加入2~10质量份的工业副产石膏粉，调节浆体pH值达到7~11，得浆体D；（5）将浆体D部分或全部代替胶凝材料，用于混凝土生产。本发明以钢渣为还原原料配合湿法研磨处置含铬固体废弃物，将处置后的含铬固体废弃物应用于建材生产，可将铬元素有效封存，还能创造经济效益。
Method for curing chromium-containing solid wastes
一种固化含铬固体废弃物的方法
HE XINGYANG (author) / ZHENG ZHENGQI (author) / FU JIANJIAN (author) / SU YING (author) / ZHANG YUNNING (author) / YANG JIN (author) / WANG YINGBIN (author) / HU JUN'AN (author) / QIN JINGYAN (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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