Production method for improving flowing property of Portland cement

A Portland cement and flow performance technology, applied in the field of cement production, can solve the problems of rapid loss of fluidity, fluctuation of cement fluidity, difficult control, etc., and achieve the effect of stable flow performance

Inactive Publication Date: 2020-10-02
华润水泥技术研发(广西)有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a production method for improving the fluidity of Portland cement, and solve the technical problems of the existing cement fluidity fluctuations that are difficult to control and fluidity loss quickly

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  • Production method for improving flowing property of Portland cement
  • Production method for improving flowing property of Portland cement
  • Production method for improving flowing property of Portland cement

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[0017] In order to make the object, technical solution and advantages of the present invention clearer, preferred embodiments are given to further describe the present invention in detail. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0018] This example takes a cement grinding production line as an example. The production line is a cement closed-circuit grinding system equipped with a Φ4.2*13m ball mill. figure 2 As shown, the cement production capacity of the system is 190-200t / h. The material from the cement mill of the grinding system is sent to the powder selection machine for sorting through the elevator, and the coarse powder is sorted and then sent to the mill for grinding. The fine powder is The finished cement products are sent to ...

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Abstract

The invention discloses a production method for improving the flowing property of Portland cement. The invention belongs to the technical field of cement production. An additive adding system is additionally arranged in an existing cement grinding system; additives are put into the additive adding system; the cement paste fluidity value and the 1h fluidity loss value are taken as control targets for production control, the cement fluidity control target value is taken as a cement product production assessment index, the fluidity of the milled cement comprehensive sample of each shift is detected, the additive mixing amount is adjusted according to the detection result, and it is ensured that the fluidity of milled cement is stabilized within a fixed range. The cement flowing property can be rapidly and flexibly adjusted, and can adapt to a production system with large fluctuation of raw material quality of a production line and large change of clinker temperature and environment temperature, and excessive adjustment of operation parameters of the grinding system is not needed. The produced cement product is stable in flowing property, and a downstream commercial concrete mixing plant does not need to frequently adjust the mixing amount of additives.

Description

technical field [0001] The invention relates to the technical field of cement production, in particular to a production method for improving the fluidity of Portland cement. Background technique [0002] Limestone is the most important raw material for cement clinker production. At present, the grade of high-quality limestone resources in the mines of some domestic cement enterprises gradually decreases with the extension of mining years. The calcium content in limestone decreases while the aluminum content gradually increases, resulting in clinker. The aluminum content gradually increased. Portland cement prepared from high alumina cement clinker is usually because of high C 3 The A content makes the early hydration heat release too fast, resulting in poor adaptability of the concrete admixture, low fluidity and rapid loss of the slurry, and the prepared concrete often suffers from excessive slump loss and blockage of the pumping pipe during long-distance transportation. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/52C04B7/02
CPCC04B7/02C04B7/52
Inventor 韦怀珺曾荣劳里林
Owner 华润水泥技术研发(广西)有限公司
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