Method for increasing mixing amount of mineral powder in cement for road

Abstract

The invention discloses a method for increasing the mixing amount of mineral powder in cement for a road. The method comprises the following steps: regulating the grade of a grinding machine, namely arranging an activation flow limiting ring in a fine grinding bin so as to realize grinding, flow control and material lifting; regulating the grading of a grinding body in the grinding machine according to the varieties of materials and cement; regulating comprehensive material parameters, namely regulating the technical parameters including the size of a screening device, ventilation in the grinding machine and the rotating speed of the grinding machine, and optimizing the powder selection efficiency of the grinding machine; periodically calibrating and checking a dosing scale; enhancing the strength of clinker; regulating the mixing amount of slag of a granulation blast furnace so that the contents in percentage by weight of the slag of the granulation blast furnace, gypsum and the clinkers are as follows: the slag of the granulation blast furnace is 8.0 percent, gypsum is 4.9 percent and the clinker is 87.1 percent. The method for increasing the mixing amount of the mineral powder in cement for the road can be used for overcoming the defects in the prior art that the grading of the grinding machine is unreasonable, metering accuracy is poor and the clinker strength is low, so as to achieve the advantages of reasonable grading of the grinding machine, good metering accuracy and high clinker strength.

Description

technical field [0001] The invention relates to the technical field of cement processing, in particular to a method for increasing the content of mineral powder in road cement. Background technique [0002] In 2013, due to the needs of the expansion project of Liuzhou Airport, our company began to mass produce road cement. Considering the fierce competition in the cement industry, reducing production costs is the only way out for the enterprise; at the same time, the granulated blast furnace slag powder produced by the slag vertical mill of our company's #4 production line has a large surplus, and the mill is often stopped when the storage is full, and the mill operation rate is low. In order to make full use of the capacity of the vertical mill, the company requires the 1# production line to be mixed with granulated blast furnace slag powder (referred to as slag powder) to produce road cement after passing through the homogenizer. [0003] The 1# production line of Guangxi...

AI Technical Summary

Problems solved by technology

From June to October 2013, the strength of clinker reached 55MPa in only one month, and the strength of clinker was relatively low

[0015] Determination of reasons: 1. Unreasonable mill gradation; 2. Inaccurate measurement; 3. Low clinker strength

[0016] In the process of realizing the present invention, the inventors found that there are at least defects such as unreasonable mill gradation, poor measurement accuracy and low clinker strength in the prior art

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