A control method of wet screening and dry crushing sand making process in fine crushing workshop of machine-made sand and gravel

Abstract

The invention provides a method for controlling the wet-screening and dry-breaking sand-making process of the medium and fine crushing workshop of machine-made sand, including the following steps: the crushed aggregate from the medium and fine crushing workshop is transported to a water-sand mixer and mixed with water, and then passed through a After sieving, it is sent to various parts of the workshop by a metering belt machine. The water-sand mixer inlet pipe is equipped with a flow valve. The control system of the intelligent control center presets the mass ratio control range, moisture content control range and intelligent control table for water-sand mixing. And collect the weighing and water content data of the metering tape machine in real time, control the water supply flow of the flow valve according to the water-sand mass ratio, and give an early warning when the water-sand mass ratio exceeds the control range, and notify personnel to deal with it. Realize the intelligent control of process parameters. The blended aggregate is weighed by a metering belt machine, and the blended water consumption is controlled by a flow valve, which can effectively control the water-sand blending ratio and control it within the optimal range to obtain optimal dehydration and desliming. Effect.

Description

technical field [0001] The invention belongs to the technical field of machine-made sand and gravel processing, and in particular relates to a method for controlling the wet-screening and dry-breaking sand-making process in a fine-breaking workshop of machine-made sand and gravel. Background technique [0002] In the semi-finished ore processed by dry desliming, the soil contained is mainly fine particles with particles larger than those rejected by the desliming screen or with strong adhesion. After being crushed by medium crushing, the large particle soil is generally crushed into fine particles, and its water solubility is enhanced. Therefore, in the fine crushing workshop in the preparation process of high-quality machine-made sand and gravel, the wet method is used to de-slime again to ensure that the quality of the intermediate products entering the ultra-fine crushing workshop meets the control requirements. However, wet desliming will introduce water again. In the s...

AI Technical Summary

Problems solved by technology

However, wet desliming will introduce water again. In the subsequent ultrafine crushing, excessive moisture content will lead to low crushing efficiency. The existing technology lacks effective quality control methods, and the lack of monitoring of moisture content will directly affect ultrafine crushing. Efficiency and quality cannot meet the processing requirements of high-quality machine-made sandstone

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