A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Process for preparing cement retarder from plaster mold
The invention discloses a process for preparing a cement retarder from a plaster mold. The process comprises the following steps: S1, crushing and screening the selected plaster mold; s2, grouping the selected plaster molds, and carrying out moisture determination; s3, drying treatment is conducted on the group where the plaster mold with the water content higher than 5.5% is located; s4, controlling the water content of the plaster mold groups to be consistent, and determining the SO3 content; and S5, adding different groups of plaster molds as retarders into cement, measuring the performance of the cement, selecting the optimal mixing amount, setting different SO3 contents of the raw materials of the plaster molds to different mixing amount groups which are 2%, 3%, 4%, 5%, 6% and 7% in sequence according to the SO3 contents of the different groups measured in the S4, and mixing the SO3 contents of the raw materials of the plaster molds into the cement raw materials with the same weight. The gypsum mold is used for replacing natural gypsum and desulfurized gypsum to serve as the retarder, the problems that the natural gypsum is high in price and the desulfurized gypsum is high in moisture and not easy to discharge are solved, the cement production cost is effectively reduced, and the cement performance is more excellent.
本发明公开了一种石膏模做水泥缓凝剂的工艺，工艺步骤如下：S1：将选用石膏模进行粉碎筛选；S2：对选用石膏模进行分组，并进行水份测定；S3：对于含水量高于5.5％的石膏模所在组别进行烘干处理；S4：控制石膏模分组的含水量一致，进行SO3含量测定；S5：将不同组别的石膏模作为缓凝剂添加至水泥中，测定水泥性能，选定最佳掺量，根据S4中测定的不同组别SO3含量，将石膏模原料的SO3含量的不同，设置处不同掺量组别，依次为2％、3％、4％、5％、6％、7％，并掺入同样重量的水泥原料中。本发明以石膏模代替天然石膏和脱硫石膏作为缓凝剂，解决了天然石膏价格昂贵和脱硫石膏水分大、不易下料的问题，有效降低了水泥生产的成本，且水泥性能更加优良。
Process for preparing cement retarder from plaster mold
The invention discloses a process for preparing a cement retarder from a plaster mold. The process comprises the following steps: S1, crushing and screening the selected plaster mold; s2, grouping the selected plaster molds, and carrying out moisture determination; s3, drying treatment is conducted on the group where the plaster mold with the water content higher than 5.5% is located; s4, controlling the water content of the plaster mold groups to be consistent, and determining the SO3 content; and S5, adding different groups of plaster molds as retarders into cement, measuring the performance of the cement, selecting the optimal mixing amount, setting different SO3 contents of the raw materials of the plaster molds to different mixing amount groups which are 2%, 3%, 4%, 5%, 6% and 7% in sequence according to the SO3 contents of the different groups measured in the S4, and mixing the SO3 contents of the raw materials of the plaster molds into the cement raw materials with the same weight. The gypsum mold is used for replacing natural gypsum and desulfurized gypsum to serve as the retarder, the problems that the natural gypsum is high in price and the desulfurized gypsum is high in moisture and not easy to discharge are solved, the cement production cost is effectively reduced, and the cement performance is more excellent.
本发明公开了一种石膏模做水泥缓凝剂的工艺，工艺步骤如下：S1：将选用石膏模进行粉碎筛选；S2：对选用石膏模进行分组，并进行水份测定；S3：对于含水量高于5.5％的石膏模所在组别进行烘干处理；S4：控制石膏模分组的含水量一致，进行SO3含量测定；S5：将不同组别的石膏模作为缓凝剂添加至水泥中，测定水泥性能，选定最佳掺量，根据S4中测定的不同组别SO3含量，将石膏模原料的SO3含量的不同，设置处不同掺量组别，依次为2％、3％、4％、5％、6％、7％，并掺入同样重量的水泥原料中。本发明以石膏模代替天然石膏和脱硫石膏作为缓凝剂，解决了天然石膏价格昂贵和脱硫石膏水分大、不易下料的问题，有效降低了水泥生产的成本，且水泥性能更加优良。
Process for preparing cement retarder from plaster mold
一种石膏模做水泥缓凝剂的工艺
ZHU CHAOYIN (author) / TANG JIANXIN (author)
2023-01-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2023