Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of hexavalent chromium reducing agent for high-temperature-resistant cement
The invention discloses a preparation method of a high-temperature-resistant hexavalent chromium reducing agent for cement, belongs to the technical field of preparation of building materials, and solves the problem of poor high temperature resistance of an existing water-soluble hexavalent chromium reducing agent for cement. The preparation method comprises the following steps: dissolving a certain amount of antimony compound in ethanol, slowly dropwise adding into an alkaline solution containing a coordination complexing agent, stirring for a certain time at a certain temperature, regulatingthe pH value by using ammonia water, adding a certain amount of inorganic substance powder, stirring, filtering, washing and drying to obtain the high-temperature-resistant hexavalent chromium reducing agent for cement. The hexavalent chromium reducing agent prepared by the method has the advantages of high temperature resistance, high reduction efficiency, no negative influence on cement-relatedproperties and the like, and the method is simple and easy to operate and has industrial popularization value.
本发明公开了一种耐高温型水泥用六价铬还原剂的制备方法，属于建筑材料制备技术领域，解决了现有的水泥用水溶性六价铬还原剂耐高温性差的问题。该制备方法的步骤为：将一定量的锑化合物溶解于乙醇中，缓慢滴加至含有配位络合剂的碱溶液中，在一定温度下搅拌一定时间后，用氨水调节pH值，再加入一定量的无机物粉末，搅拌、过滤、洗涤、干燥后，即得到一种耐高温型水泥用六价铬还原剂。本发明所制备的六价铬还原剂具有耐高温、还原效率高，对水泥相关性能没有负面影响等优点，且该方法简单，易操作，具有工业推广价值。
Preparation method of hexavalent chromium reducing agent for high-temperature-resistant cement
The invention discloses a preparation method of a high-temperature-resistant hexavalent chromium reducing agent for cement, belongs to the technical field of preparation of building materials, and solves the problem of poor high temperature resistance of an existing water-soluble hexavalent chromium reducing agent for cement. The preparation method comprises the following steps: dissolving a certain amount of antimony compound in ethanol, slowly dropwise adding into an alkaline solution containing a coordination complexing agent, stirring for a certain time at a certain temperature, regulatingthe pH value by using ammonia water, adding a certain amount of inorganic substance powder, stirring, filtering, washing and drying to obtain the high-temperature-resistant hexavalent chromium reducing agent for cement. The hexavalent chromium reducing agent prepared by the method has the advantages of high temperature resistance, high reduction efficiency, no negative influence on cement-relatedproperties and the like, and the method is simple and easy to operate and has industrial popularization value.
本发明公开了一种耐高温型水泥用六价铬还原剂的制备方法，属于建筑材料制备技术领域，解决了现有的水泥用水溶性六价铬还原剂耐高温性差的问题。该制备方法的步骤为：将一定量的锑化合物溶解于乙醇中，缓慢滴加至含有配位络合剂的碱溶液中，在一定温度下搅拌一定时间后，用氨水调节pH值，再加入一定量的无机物粉末，搅拌、过滤、洗涤、干燥后，即得到一种耐高温型水泥用六价铬还原剂。本发明所制备的六价铬还原剂具有耐高温、还原效率高，对水泥相关性能没有负面影响等优点，且该方法简单，易操作，具有工业推广价值。
Preparation method of hexavalent chromium reducing agent for high-temperature-resistant cement
一种耐高温型水泥用六价铬还原剂的制备方法
ZHANG BIN (Autor:in) / LIN YONGQUAN (Autor:in) / ZHANG YULING (Autor:in) / ZHAO YOUQIANG (Autor:in)
16.03.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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