Balanced crushing regulation and control process in gravel production

Abstract

The invention provides a balanced crushing regulation and control process in gravel production. The process comprises the following steps that coarse crushing is conducted, wherein raw materials are fed into a jaw crusher by means of a bar feeder for coarse crushing; primary screening is conducted, wherein coarse materials are subjected to the primary screening again after being subjected to intermediate crushing, fine materials are subjected to secondary screening, and part of the fine materials enter an intermediate crushing link along with the coarse materials to be subjected to cyclic crushing; the secondary screening is conducted, wherein the secondary screening is conducted by adopting a screen mesh which is finer than a screen mesh of the primary screening, the coarse materials are subjected to fine crushing, third screening is conducted after the fine crushing, and the fine materials are fed into a finished product bin; and the third screening is conducted, wherein the coarse materials are subjected to the fine crushing again, the fine materials enters a fine crushing adjusting bin, and part of the fine materials enter a fine crushing link along with the coarse materials to be subjected to the cyclic crushing. According to the process, gaps among large stones in each crushing link are filled, the phenomenon of shed erection of a crusher is reduced, and a crushing effect is enhanced; and in addition, the difficulty and the complexity of capacity coordination and matching among the crushing links are reduced, the operation efficiency of a production system is improved, and a proportion of each graded aggregate is convenient to control.

Description

technical field [0001] The invention relates to the technical field of sand and gravel production, in particular to a balanced crushing control process in sand and gravel production. Background technique [0002] In the sand and gravel processing system, the wool material is the recycled slag material. As the particle size of the recovered wool material provided by the material party becomes larger, the production capacity of the system will drop significantly. Sometimes the content of ultra-diameter stones (greater than 800mm) is greater than 20% and the average particle size of the wool increases. In order to comprehensively analyze the impact of the increase in the particle size of the wool on the production capacity of the system, the production capacity of the sand and gravel system is tested. The test results show that the sand and gravel system The production capacity is far lower than the designed production capacity, and the needle flake stone content is as high as ...

AI Technical Summary

Problems solved by technology

Due to the low production capacity of small stones, large and medium stones are waiting for the production of small stones, which makes the system in a low-efficiency operation state with unbalanced equipment load for a long time. Considering the balanced production of aggregates at all levels, it is difficult to meet the sand required for the peak period of concrete pouring. Stone aggregate quantity and aggregate quality requirements

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