Production system and production method of machine-made gravels

Abstract

The invention relates to a production system and a production method of machine-made gravels. The production system comprises a feed hopper, a feeding machine, an early crushing system and a medium crushing system, wherein the feed hopper is used for delivering an aggregate into the feeding machine; the early crushing system is used for early crushing the aggregate; the medium crushing system is used for crushing the aggregate again; a gravel making machine for further crushing the aggregate is arranged behind the medium crushing system; a first screen is arranged behind the gravel making machine and is used for outputting the aggregate meeting a first particle size section; the aggregate not meeting the first particle size section is shaped by a gradation adjustment system and then returned to the gravel making machine; and all modules are connected with one another by virtue of an aggregate conveying system. By adopting the production system and the production method of the machine-made gravels, the output of the machine-made gravels meeting a required fineness modulus can be improved by controlling reasonable gradation, and the quality of the machine-made gravels is improved by reducing the content of flat and elongated particles by the gravel making machine.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a machine-made sandstone production system and production method. Background technique [0002] In the process of concrete mixing, it is necessary to add granular loose materials that act as a skeleton or filling, called aggregates, which are divided into coarse aggregates and fine aggregates. and fly ash etc. In some areas rich in river sand, natural river sand is used as aggregate, but river sand resources are limited after all, resources are getting less and less, and the price is high. For environmental protection, many local governments have restricted the mining of river sand. Therefore, a method of directly using jaw crushers to produce aggregates has appeared on the market. Although it breaks through the constraints of natural conditions, the aggregates obtained by this method have poor particle shape, unstable gradation, and large powder content. The water content ...

AI Technical Summary

Problems solved by technology

However, in the actual application process, it is found that the amount of machine-made sandstone obtained by this method does not meet the use requirements, and the grain shape of the aggregate is not good.

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