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Preparation method of sludge dehydration curing agent
The invention relates to the technical field of preparation of dehydration curing agents, and discloses a preparation method of a sludge dehydration curing agent, which comprises the following steps: respectively calcining Al (OH) 3 and CaCO3 in a muffle furnace for 2.5 hours, quenching after calcining to obtain high-activity Al2O3 and CaO, grinding the high-activity Al2O3 and CaO, sieving to serve as raw materials for later use, uniformly mixing Al2O3 and CaO according to a certain proportion, and then carrying out vacuum drying to obtain the sludge dehydration curing agent. The preparation method comprises the following steps: adding distilled water according to a certain ratio, boiling in a hydrothermal synthesis device for 1-1.5 hours, cooling the slurry, drying in a drying oven to constant weight to obtain a hydrothermal synthesis product of Al2O3 and CaO, grinding the product, uniformly mixing with a small amount of CaF2 (about 4%), calcining at 1180 DEG C for 2 hours, naturally cooling to room temperature, grinding by using a mortar, and sieving to obtain the calcium aluminate dehydration curing agent. Finally, the prepared calcium aluminate curing agent and ordinary Portland cement are compounded to obtain the aluminum-series dehydration curing agent which is called A1 dehydration curing agent, and CaF2 serves as a mineralizer to reduce the firing temperature of the curing agent and increase the synthesis speed of the curing agent.
本发明涉及脱水固化剂制备技术领域，公开了淤泥脱水固化剂的制备方法，将Al(OH)3和CaCO3分别在马弗炉中煅烧2.5h，煅烧后骤冷成高活性Al2O3和CaO，将其磨细后过筛作为原料备用，同时按一定的比例将Al2O3和CaO均匀混合后，按一定比加入蒸馏水在水热合成装置中沸腾煮1～1.5h，待浆液冷却后于烘箱烘干至恒重得Al2O3和CaO的水热合成产物，将其产物磨碎后与少量CaF2(约4％)混合均匀，在1180℃下煅烧2h后自然冷却至室温，用研钵磨细后过筛，制得铝酸钙脱水固化剂，最后将制得的铝酸钙固化剂与普通硅酸盐水泥进行复配得铝系脱水固化剂，称为A1脱水固化剂，其中CaF2作为矿化剂降低固化剂的烧制温度并提高其合成速度。
Preparation method of sludge dehydration curing agent
The invention relates to the technical field of preparation of dehydration curing agents, and discloses a preparation method of a sludge dehydration curing agent, which comprises the following steps: respectively calcining Al (OH) 3 and CaCO3 in a muffle furnace for 2.5 hours, quenching after calcining to obtain high-activity Al2O3 and CaO, grinding the high-activity Al2O3 and CaO, sieving to serve as raw materials for later use, uniformly mixing Al2O3 and CaO according to a certain proportion, and then carrying out vacuum drying to obtain the sludge dehydration curing agent. The preparation method comprises the following steps: adding distilled water according to a certain ratio, boiling in a hydrothermal synthesis device for 1-1.5 hours, cooling the slurry, drying in a drying oven to constant weight to obtain a hydrothermal synthesis product of Al2O3 and CaO, grinding the product, uniformly mixing with a small amount of CaF2 (about 4%), calcining at 1180 DEG C for 2 hours, naturally cooling to room temperature, grinding by using a mortar, and sieving to obtain the calcium aluminate dehydration curing agent. Finally, the prepared calcium aluminate curing agent and ordinary Portland cement are compounded to obtain the aluminum-series dehydration curing agent which is called A1 dehydration curing agent, and CaF2 serves as a mineralizer to reduce the firing temperature of the curing agent and increase the synthesis speed of the curing agent.
本发明涉及脱水固化剂制备技术领域，公开了淤泥脱水固化剂的制备方法，将Al(OH)3和CaCO3分别在马弗炉中煅烧2.5h，煅烧后骤冷成高活性Al2O3和CaO，将其磨细后过筛作为原料备用，同时按一定的比例将Al2O3和CaO均匀混合后，按一定比加入蒸馏水在水热合成装置中沸腾煮1～1.5h，待浆液冷却后于烘箱烘干至恒重得Al2O3和CaO的水热合成产物，将其产物磨碎后与少量CaF2(约4％)混合均匀，在1180℃下煅烧2h后自然冷却至室温，用研钵磨细后过筛，制得铝酸钙脱水固化剂，最后将制得的铝酸钙固化剂与普通硅酸盐水泥进行复配得铝系脱水固化剂，称为A1脱水固化剂，其中CaF2作为矿化剂降低固化剂的烧制温度并提高其合成速度。
Preparation method of sludge dehydration curing agent
淤泥脱水固化剂的制备方法
SONG CHANGYU (author) / DENG YAJUN (author) / LUO YANSHAN (author) / LIU ZHENGXIONG (author) / ZHONG YUAN (author) / LIANG XIONGWEI (author)
2021-10-01
Patent
Electronic Resource
Chinese
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