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A kind of cement grinding method and cement grinding aid

A cement grinding aid and grinding aid technology, applied in the field of cement grinding aids, can solve the problems of waste of resources, high energy consumption, high COD, etc., and achieve the effects of comprehensive utilization of resources, improvement of material fluidity, and increase of specific surface area

Active Publication Date: 2019-12-27
湖南昌迪环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The total amount of wastewater in the country is about 800,000 tons / year (in terms of 50% concentration), and the COD is high, so it cannot be directly treated by biochemical treatment
The currently widely used incineration method not only has a large investment and energy consumption, but also has a certain environmental impact, and it is also a waste of resources.

Method used

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  • A kind of cement grinding method and cement grinding aid
  • A kind of cement grinding method and cement grinding aid
  • A kind of cement grinding method and cement grinding aid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment SA1

[0062] Examples SA1-SA5

[0063] The liquid A was mixed with cement clinker (commercial brand: PO42.5 cement) in different weight ratios for grinding treatment. The specific conditions and results are shown in Table 1.

[0064] Table 1: Grinding conditions and results of Comparative Example DA1 and Examples SA1-SA5

[0065]

[0066] As can be seen from the table 1 result: 1, after adding saponification waste lye, the fluidity of all materials all improves; 2, after adding saponification waste lye, the 45 micron sieve of all materials descends; 3, add saponification waste lye Finally, the specific surface area of ​​the materials in Examples SA1-SA5 all increases, but excessive addition will greatly improve the fluidity of the materials, reduce the friction between the materials and the grinding medium, and make the materials unable to be effectively ground. The specific surface area decreases while the sieve residue increases. These results show that the saponified waste l...

Embodiment SB1

[0069] The liquid A was used as a grinding aid and mixed with cement clinker at a ratio of 0.05% by weight for grinding treatment. The specific conditions and results are shown in Table 2.

Embodiment SB2

[0071] Add sulfuric acid to liquid A to adjust the pH value to 10, then use it as a grinding aid, and mix cement clinker in the proportion of 0.05% by weight for grinding treatment. The specific conditions and results are shown in Table 2.

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Abstract

The invention provides a cement grinding method and a cement grinding aid. The method includes: subjecting a to-be-grinded cement material and a cement grinding aid to grinding treatment together; wherein the cement grinding aid contains waste saponification lye generated in preparation of cyclohexanone by cyclohexane oxidation. The cement grinding method provided by the invention can take the waste saponification lye generated in preparation of cyclohexanone by cyclohexane oxidation as the grinding aid for cement grinding.

Description

technical field [0001] The invention relates to a cement grinding method and a cement grinding aid. Background technique [0002] Building materials are an important basic raw material industry that supports social and economic development. Among them, cement and concrete are indispensable basic materials for construction projects and various structures. They have a wide range of uses, large quantities, stable performance and durability. Taking cement production as an example, the existing cement production process is "two grindings and one burning", that is, grinding of raw materials, calcining and final grinding of cement. The equipment used for grinding is roller press, vertical mill and ball mill. The grinding process consumes a lot of energy in the cement production process, and the energy utilization rate is extremely low, resulting in a large amount of energy consumption in cement production every year. In the modern cement industry, cement grinding aids have become ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/52C04B24/00C04B103/52
CPCC04B7/52C04B24/001C04B40/0039C04B2103/52C04B2103/12C04B2103/0094C04B2103/50C04B2103/0068
Inventor 钱文斌
Owner 湖南昌迪环境科技有限公司
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