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Organic acid-protein composite gypsum retarder and preparation method thereof
The invention discloses an organic acid-protein composite gypsum retarder and a preparation method thereof. According to the organic acid-protein composite gypsum retarder, waste leather protein is used as a raw material, organic acid is introduced to regulate the molecular weight of the protein through hydrolysis, and meanwhile, the organic acid is also used as an effective retarding component to form the organic acid-protein composite gypsum retarder. The preparation method comprises the following steps: mixing an organic acid solution with waste leather protein powder according to a certain ratio, hydrolyzing protein under an acidic condition until the protein is in a molecular weight range with high retarding efficiency, and carrying out spray drying to remove moisture in the protein so as to prepare the organic acid-protein composite gypsum retarder. The gypsum composite retarder is simple in preparation process, low in energy consumption, low in cost and free of pollution, the synergistic effect of the organic acid and the protein can be brought into full play, and the gypsum retarder has the advantages of being good in solubility, high in stability, free of special smell, good in gypsum retarding effect, small in strength loss and the like and is suitable for industrial large-scale production.
本发明公开了一种有机酸‑蛋白复合石膏缓凝剂及其制备方法。该有机酸‑蛋白复合石膏缓凝剂以废弃皮革蛋白为原料，引入有机酸通过水解调控蛋白的分子量，同时有机酸也作为有效缓凝成分组成有机酸‑蛋白复合石膏缓凝剂。本发明首先将有机酸溶液与废弃皮革蛋白粉末按照一定比例混合，将蛋白在酸性条件下水解至缓凝效率高的分子量范围内，再通过喷雾干燥除去其中水分制备有机酸‑蛋白复合石膏缓凝剂。本发明中石膏复合缓凝剂制备工艺简单、低能耗、成本低、无污染，能充分发挥有机酸和蛋白的协同作用，使得石膏缓凝剂具备溶解性好、稳定性高，无特殊气味，对石膏缓凝效果好，强度损失小等优点，适用于工业化大规模生产。
Organic acid-protein composite gypsum retarder and preparation method thereof
The invention discloses an organic acid-protein composite gypsum retarder and a preparation method thereof. According to the organic acid-protein composite gypsum retarder, waste leather protein is used as a raw material, organic acid is introduced to regulate the molecular weight of the protein through hydrolysis, and meanwhile, the organic acid is also used as an effective retarding component to form the organic acid-protein composite gypsum retarder. The preparation method comprises the following steps: mixing an organic acid solution with waste leather protein powder according to a certain ratio, hydrolyzing protein under an acidic condition until the protein is in a molecular weight range with high retarding efficiency, and carrying out spray drying to remove moisture in the protein so as to prepare the organic acid-protein composite gypsum retarder. The gypsum composite retarder is simple in preparation process, low in energy consumption, low in cost and free of pollution, the synergistic effect of the organic acid and the protein can be brought into full play, and the gypsum retarder has the advantages of being good in solubility, high in stability, free of special smell, good in gypsum retarding effect, small in strength loss and the like and is suitable for industrial large-scale production.
本发明公开了一种有机酸‑蛋白复合石膏缓凝剂及其制备方法。该有机酸‑蛋白复合石膏缓凝剂以废弃皮革蛋白为原料，引入有机酸通过水解调控蛋白的分子量，同时有机酸也作为有效缓凝成分组成有机酸‑蛋白复合石膏缓凝剂。本发明首先将有机酸溶液与废弃皮革蛋白粉末按照一定比例混合，将蛋白在酸性条件下水解至缓凝效率高的分子量范围内，再通过喷雾干燥除去其中水分制备有机酸‑蛋白复合石膏缓凝剂。本发明中石膏复合缓凝剂制备工艺简单、低能耗、成本低、无污染，能充分发挥有机酸和蛋白的协同作用，使得石膏缓凝剂具备溶解性好、稳定性高，无特殊气味，对石膏缓凝效果好，强度损失小等优点，适用于工业化大规模生产。
Organic acid-protein composite gypsum retarder and preparation method thereof
一种有机酸-蛋白复合石膏缓凝剂及其制备方法
YANG LIRONG (author) / WANG CHUNMEI (author) / LIU ZHIGANG (author)
2022-12-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Modified amino acid gypsum retarder and preparation method thereof
| European Patent Office | 2022