Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a method for preparing high-strength alpha hemihydrate gypsum by using phosphogypsum. The method comprises the following steps of: mixing the phosphogypsum, a pretreatment additive, water and a crystal modifier, stirring to be uniform, forming balls after aging treatment, then finishing steam curing and drying in a stilling kettle, and preparing the high-strength alpha hemihydrate gypsum. The method disclosed by the invention has the advantages that the process flow is simple, the industrialization is easy, the phosphogypsum can be greatly utilized and consumed, and the conversion rate is high; and simultaneously, the invention provides the stilling kettle capable of realizing integration of steam curing and drying, the alpha hemihydrate gypsum can be better prepared, and the high-quality building material or wall-body material can be better prepared.
The invention discloses a method for preparing high-strength alpha hemihydrate gypsum by using phosphogypsum. The method comprises the following steps of: mixing the phosphogypsum, a pretreatment additive, water and a crystal modifier, stirring to be uniform, forming balls after aging treatment, then finishing steam curing and drying in a stilling kettle, and preparing the high-strength alpha hemihydrate gypsum. The method disclosed by the invention has the advantages that the process flow is simple, the industrialization is easy, the phosphogypsum can be greatly utilized and consumed, and the conversion rate is high; and simultaneously, the invention provides the stilling kettle capable of realizing integration of steam curing and drying, the alpha hemihydrate gypsum can be better prepared, and the high-quality building material or wall-body material can be better prepared.
Method for preparing high-strength alpha-hemihydrate gypsum with semi-dry process
| Europäisches Patentamt | 2016
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