Gravel production process capable of suppressing dust and preventing sand flying under strong wind condition

Abstract

The invention provides a gravel production process capable of suppressing dust and preventing sand flying under a strong wind condition. The gravel production process comprises the following steps of: performing primary crushing, performing primary screening after crushing, enabling small stone materials to enter a mixing bin, and enabling large stone materials to enter secondary crushing; conveying the materials subjected to secondary crushing to a high-frequency screen by using a sealing-tape machine, spraying at an outlet of the sealing-tape machine by using a high-pressure spraying pipe, conveying the stone materials on the screen surface to the mixing bin to be mixed with the small stone materials, and enabling screened slurry to enter a spiral classifier to recover gravel; and enabling the mixed stone materials to enter a sand making crusher to be crushed, washing out stone powder by washing sand after crushing, and finally enabling the crushed stone materials to enter a sand bin. By adopting the gravel production process, the generation of flying dust is effectively prevented, the hole blocking probability is greatly reduced, the screening effect and the gravel quality are guaranteed, and energy is saved. By mixing the stone materials, the water content of the feeding materials of the sand making crusher is lower than 2 percent, the cavity blocking of the crusher is prevented, the production efficiency is guaranteed, and the potential safety hazard is reduced.

Description

technical field [0001] The invention relates to the technical field of artificial sand making, in particular to a sandstone production process for dust suppression and flying sand prevention under strong wind conditions. Background technique [0002] When processing sand and gravel under strong wind conditions, although sprinkler devices are installed in many places in the production site to suppress dust, the dust generated during screening is still difficult to solve, and the production is windy and sandy, causing serious environmental impacts. In order to solve the problem of heavy wind and sand, the traditional method is to arrange spray pipes on the screen surface. However, in the gravel production workshop, due to the large content of stone powder and fine sand in the material before screening, the screen holes are often blocked during spraying, which reduces the screening rate and is not easy to detect. Entering the crusher, not only wastes energy, but also leads to ...

AI Technical Summary

Problems solved by technology

However, in the gravel production workshop, due to the large content of stone powder and fine sand in the material before screening, the screen holes are often blocked during spraying, which reduces the screening rate and is not easy to detect. Entering the crusher, not only wastes energy, but also causes rapid deterioration of the quality of sand and gravel in the subsequent crushing process

In addition, after spraying, the water content of the stones at the outlet of the screen surface is relatively large, and the stones will bring water into the belt conveyor, and then into the sand making crusher through the belt conveyor, which will easily cause the cavity of the crusher to be blocked, and thus have to be shut down for maintenance, seriously affecting production efficiency , even with the risk of production accidents

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