Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Gangue heavy metal curing agent as well as preparation method and use method thereof
The invention provides a gangue heavy metal curing agent as well as a preparation method and a use method thereof. The gangue heavy metal curing agent comprises a material A and a material B, the mass ratio of the material A to the material B is 100: 40-100, and the material A comprises, by mass, 3-5 parts of sodium bentonite, 0.003-0.03 part of a bentonite activator, 30-50 parts of fly ash and 100 parts of water; the material B is a sodium polyacrylate solution with the solid content of 30-40 wt%, the weight-average molecular weight of sodium polyacrylate is 1200-20000, and the molecular weight distribution coefficient is 1.7-2.5. According to the gangue heavy metal curing agent provided by the invention, chelating sites are formed on the inner surface and the outer surface of the sodium bentonite through the bentonite activating agent, a strong adsorption effect on heavy metal ions is achieved, and the sodium bentonite and the fly ash are matched, so that high adsorption activity can be kept, and the heavy metal ions can be adsorbed and fixed; meanwhile, layering caused by geological sedimentation or rain wash can be avoided.
本发明提供了一种矸石重金属固化剂及其制备方法和使用方法。该矸石重金属固化剂包括A料和B料，且两者质量比为100:40～100，按质量份数计，A料包括纳基膨润土3～5份，膨润土活化剂0.003～0.03份，粉煤灰30～50份，水100份；B料为固含量为30～40wt％的聚丙烯酸钠溶液，且聚丙烯酸钠的重均分子量为1200～20000，分子量分布系数为1.7～2.5。本申请提供的矸石重金属固化剂通过膨润土活化剂在钠基膨润土的内外表面形成螯合点位，对重金属离子具有强吸附作用，将钠基膨润土和粉煤灰相配合，既能保持高的吸附活性，又利于对重金属离子进行吸附和固定，同时还能避免地质沉降或雨水冲刷导致分层。
Gangue heavy metal curing agent as well as preparation method and use method thereof
The invention provides a gangue heavy metal curing agent as well as a preparation method and a use method thereof. The gangue heavy metal curing agent comprises a material A and a material B, the mass ratio of the material A to the material B is 100: 40-100, and the material A comprises, by mass, 3-5 parts of sodium bentonite, 0.003-0.03 part of a bentonite activator, 30-50 parts of fly ash and 100 parts of water; the material B is a sodium polyacrylate solution with the solid content of 30-40 wt%, the weight-average molecular weight of sodium polyacrylate is 1200-20000, and the molecular weight distribution coefficient is 1.7-2.5. According to the gangue heavy metal curing agent provided by the invention, chelating sites are formed on the inner surface and the outer surface of the sodium bentonite through the bentonite activating agent, a strong adsorption effect on heavy metal ions is achieved, and the sodium bentonite and the fly ash are matched, so that high adsorption activity can be kept, and the heavy metal ions can be adsorbed and fixed; meanwhile, layering caused by geological sedimentation or rain wash can be avoided.
本发明提供了一种矸石重金属固化剂及其制备方法和使用方法。该矸石重金属固化剂包括A料和B料，且两者质量比为100:40～100，按质量份数计，A料包括纳基膨润土3～5份，膨润土活化剂0.003～0.03份，粉煤灰30～50份，水100份；B料为固含量为30～40wt％的聚丙烯酸钠溶液，且聚丙烯酸钠的重均分子量为1200～20000，分子量分布系数为1.7～2.5。本申请提供的矸石重金属固化剂通过膨润土活化剂在钠基膨润土的内外表面形成螯合点位，对重金属离子具有强吸附作用，将钠基膨润土和粉煤灰相配合，既能保持高的吸附活性，又利于对重金属离子进行吸附和固定，同时还能避免地质沉降或雨水冲刷导致分层。
Gangue heavy metal curing agent as well as preparation method and use method thereof
矸石重金属固化剂及其制备方法和使用方法
LI QIANG (Autor:in) / GUO YANGNAN (Autor:in) / PAN JIN (Autor:in) / YE XIAODONG (Autor:in) / WANG XIAOLONG (Autor:in) / CHANG JIANHONG (Autor:in) / LIU SHUYU (Autor:in) / ZHANG KAI (Autor:in)
23.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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