Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing unsteady calcium carbonate by indirect carbonation of steel slag
The invention discloses a method for preparing unsteady calcium carbonate by indirect carbonation of steel slag, which comprises the following steps: weighing steel slag, putting the steel slag into an ammonium chloride solution for leaching reaction, and filtering to obtain leachate and leaching slag; adding sodium dodecyl benzene sulfonate (SDBS) into the leachate, introducing carbon dioxide for carbonation reaction, and filtering after proper reaction time to obtain unsteady calcium carbonate. According to the invention, the crystal form regulating agent with specific concentration is added in the carbonation reaction process, so that the carbonation product contains high-purity unsteady calcium carbonate (vaterite), and the carbonation product has high activity and is easy to generate hydration reaction with cement.
本发明公开了一种钢渣间接碳酸化制备非稳态碳酸钙的方法，包括以下步骤：称取钢渣放入氯化铵溶液中进行浸出反应，过滤得到浸出液和浸渣；浸出液加入十二烷基苯磺酸钠（SDBS）后通入二氧化碳进行碳酸化反应，适当反应时间后过滤得到非稳态碳酸钙。本发明通过在碳酸化反应过程中加入特定浓度的晶型调控剂，使得碳酸化产物中含有高纯度非稳态碳酸钙（球霰石），使其具有高活性易与水泥发生水化反应。
Method for preparing unsteady calcium carbonate by indirect carbonation of steel slag
The invention discloses a method for preparing unsteady calcium carbonate by indirect carbonation of steel slag, which comprises the following steps: weighing steel slag, putting the steel slag into an ammonium chloride solution for leaching reaction, and filtering to obtain leachate and leaching slag; adding sodium dodecyl benzene sulfonate (SDBS) into the leachate, introducing carbon dioxide for carbonation reaction, and filtering after proper reaction time to obtain unsteady calcium carbonate. According to the invention, the crystal form regulating agent with specific concentration is added in the carbonation reaction process, so that the carbonation product contains high-purity unsteady calcium carbonate (vaterite), and the carbonation product has high activity and is easy to generate hydration reaction with cement.
本发明公开了一种钢渣间接碳酸化制备非稳态碳酸钙的方法，包括以下步骤：称取钢渣放入氯化铵溶液中进行浸出反应，过滤得到浸出液和浸渣；浸出液加入十二烷基苯磺酸钠（SDBS）后通入二氧化碳进行碳酸化反应，适当反应时间后过滤得到非稳态碳酸钙。本发明通过在碳酸化反应过程中加入特定浓度的晶型调控剂，使得碳酸化产物中含有高纯度非稳态碳酸钙（球霰石），使其具有高活性易与水泥发生水化反应。
Method for preparing unsteady calcium carbonate by indirect carbonation of steel slag
一种钢渣间接碳酸化制备非稳态碳酸钙的方法
JIANG JINYANG (Autor:in) / XIN ZHONGYI (Autor:in) / WANG FENGJUAN (Autor:in) / SUI SHIYU (Autor:in) / ZHANG YU (Autor:in) / LIU ZHIYONG (Autor:in)
01.03.2024
Patent
Elektronische Ressource
Chinesisch
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