Balanced crushing control technology in sand and gravel production

Abstract

The invention provides a balanced crushing control process in the production of sand and gravel, which includes the following steps: coarse crushing, the raw material enters the jaw crusher through a rod feeder for coarse crushing; a sieve, the coarse material enters the secondary crushing and then enters the first sieve , the fine material enters the second sieve, and part of the fine material enters the intermediate crushing link with the coarse material for circular crushing; the second sieve uses a finer screen than the first sieve for the second sieve, the coarse material enters the fine crushing, and after the fine crushing enters the third sieve, the fine material Enter the finished product silo; three sieves, the coarse material enters the fine crushing again, the fine material enters the fine crushing adjustment silo, and part of the fine material enters the fine crushing link together with the coarse material for circular crushing. The invention enables the gaps between the large stones in each crushing link to be filled, reduces the phenomenon of the crusher shed, and enhances the crushing effect; in addition, reduces the difficulty and complexity of capacity coordination and matching between the crushing links, and improves The efficiency of the production system operation is improved, and the proportion of aggregates at all levels is easy 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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