Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Calcium sulfate gypsum and preparation method thereof
The invention provides calcium sulfate gypsum and a preparation method thereof, and belongs to the technical field of waste recycling and cement. The calcium sulfate gypsum provided by the invention is prepared from the following raw materials: glauberite waste residues and dihydrate gypsum. According to the invention, the glauberite waste residue and dihydrate gypsum are used as raw materials toprepare the raw material calcium sulfate gypsum for industrial cement, so that the resource reutilization of the glauberite waste residue is realized. Meanwhile, the invention further provides a preparation method of the glauberite waste residues, a small amount of sodium sulfate in the glauberite waste residues is utilized, the reaction time of crystal water is greatly saved, the working efficiency is improved, the temperature is controlled to be 60 DEG C or below, and the crystal water can be effectively prevented from being converted into external water; therefore, the mass percentage of sulfur trioxide in the final calcium sulfate gypsum is more than 35%, the mass percentage of crystal water is more than 8%, and the mass percentage of external water is less than 10%. According to the method, good economic benefits and social benefits are brought while resource recycling is achieved.
本发明提供了一种硫酸钙石膏及其制备方法，属于废弃物再利用及水泥技术领域。本发明提供的硫酸钙石膏由以下原料制备得到：钙芒硝废渣和二水石膏。本发明以钙芒硝废渣和二水石膏为原料，制得了工业水泥用原料硫酸钙石膏，实现了钙芒硝废渣的资源再利用。同时，本发明还提供了钙芒硝废渣的制备方法，利用钙芒硝废渣中少量的硫酸钠，大大节省了结晶水的反应时间，提高工作效率，并且温度控制在60℃以下，能够有效控制防止结晶水转换成外在水，保证最终硫酸钙石膏中三氧化硫质量百分含量35％以上，结晶水质量百分含量为8％以上，外在水质量百分含量小于10％。本发明在实现资源回收利用的同时，带来了良好的经济效益和社会效益。
Calcium sulfate gypsum and preparation method thereof
The invention provides calcium sulfate gypsum and a preparation method thereof, and belongs to the technical field of waste recycling and cement. The calcium sulfate gypsum provided by the invention is prepared from the following raw materials: glauberite waste residues and dihydrate gypsum. According to the invention, the glauberite waste residue and dihydrate gypsum are used as raw materials toprepare the raw material calcium sulfate gypsum for industrial cement, so that the resource reutilization of the glauberite waste residue is realized. Meanwhile, the invention further provides a preparation method of the glauberite waste residues, a small amount of sodium sulfate in the glauberite waste residues is utilized, the reaction time of crystal water is greatly saved, the working efficiency is improved, the temperature is controlled to be 60 DEG C or below, and the crystal water can be effectively prevented from being converted into external water; therefore, the mass percentage of sulfur trioxide in the final calcium sulfate gypsum is more than 35%, the mass percentage of crystal water is more than 8%, and the mass percentage of external water is less than 10%. According to the method, good economic benefits and social benefits are brought while resource recycling is achieved.
本发明提供了一种硫酸钙石膏及其制备方法，属于废弃物再利用及水泥技术领域。本发明提供的硫酸钙石膏由以下原料制备得到：钙芒硝废渣和二水石膏。本发明以钙芒硝废渣和二水石膏为原料，制得了工业水泥用原料硫酸钙石膏，实现了钙芒硝废渣的资源再利用。同时，本发明还提供了钙芒硝废渣的制备方法，利用钙芒硝废渣中少量的硫酸钠，大大节省了结晶水的反应时间，提高工作效率，并且温度控制在60℃以下，能够有效控制防止结晶水转换成外在水，保证最终硫酸钙石膏中三氧化硫质量百分含量35％以上，结晶水质量百分含量为8％以上，外在水质量百分含量小于10％。本发明在实现资源回收利用的同时，带来了良好的经济效益和社会效益。
Calcium sulfate gypsum and preparation method thereof
一种硫酸钙石膏及其制备方法
WANG WENJIE (Autor:in) / WANG DEREN (Autor:in)
03.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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