High molecular synthetic cement grinding aid

Abstract

The invention provides a high molecular synthetic cement grinding aid which is characterized by being prepared from the following raw materials in parts by weight: 45-60 parts of allyl polyether, 5-15 parts of sodium methylallyl sulfonate, 10-15 parts of methacrylic acid, 2-8 parts acrylamide, 10-15 parts of self-prepared polymeric polylol and 2-8 parts of initiator ammonium persulfate. The product provided by the invention can reduce the consumption of grinding bodies in the cement production process, increase the powder selecting efficiency of a powder selecting machine, reduce dust emission, increase the utilization ratio of waste slag, improve the workability and applicability of cement and achieve favorable economic and social benefits; and the specific improvements are as follows: the industrial waste slag adding mount in the cement can be increased by 6-8%, the grinding efficiency can be increased by 10-20%, the three-day strength of the cement can be increased by 2-4 Mpa, and the twenty-eight-day strength can be increased by 3-6 Mpa. Thus, the high molecular synthetic cement grinding aid has favorable development and application prospects.

Description

technical field [0001] The invention relates to a polymer synthetic cement grinding aid, belonging to the technical field of cement process admixtures. Background technique [0002] Cement grinding aid is a chemical additive that improves the grinding effect and performance of cement. It can significantly increase the output per hour of the cement mill, the strength of cement at all ages, and improve its fluidity. Cement grinding aids can greatly reduce the phenomenon of electrostatic adsorption and ball formation during the grinding process, and can reduce the tendency of re-agglomeration of ultrafine particles formed during the grinding process. Cement grinding aids can also significantly improve the fluidity of cement, improve the grinding effect of the mill and the powder selection efficiency of the powder separator, thereby reducing the energy consumption of grinding. Cement produced with grinding aids has a lower tendency to compact and agglomerate, which facilitates ...

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Problems solved by technology

[0003] At present, the grinding aids commonly used in the cement manufacturing industry are mostly NaCl, Na 2 SO 3 The main compounding product will bring more halogen ions into the cement, which will endanger the performance of the concrete. If the amount of the reference is more than 1%, the grinding effect is not ideal. When the output of the cement grinding table is increased by about 10%, it can usually enhance the performance of the concrete. The early strength of cement cannot enhance the later strength of cement

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