High-quality machine-made sand production process

Abstract

The invention discloses a high-quality machine-made sand production process. The process comprises step 1, crushed stones are crushed through a crusher, and the crusher is provided with a crushing feeding port and a crushing discharging port, and is used for crushing raw materials; step 2, a vibrating screen is connected with the crushing discharging port, and receives aggregate particles crushedby the crusher, the aggregate particles are conveyed to a grading controller through a conveying device, the grading controller is used for screening the received aggregate particles, and grading machine-made sand and finely controlling grading of the machine-made sand, unqualified materials return to the crusher to be re-crushed, and the vibrating screen is provided with a coarse particle discharging port and a fine particle discharging port; step 3, a particle shape optimization machine is added after the grading controller for optimizing the grain shape of the machine-made sand; and step 4,a wind power powder separator is connected with the fine particle discharging port for wind power powder separation of fine particles, and the wind power powder separator is provided with a machine-made sand discharging port and a stone powder discharging port. According to the process, the production difficulty of the machine-made sand is reduced, so that the performance of the prepared concreteis improved, the use amount of water and the use amount of cement are saved, and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to a high-quality production process, in particular to a high-quality production process, and belongs to the technical field of machine-made sand preparation. Background technique [0002] Machine-made sand is formed by crushing stones. After crushing, the content of stone powder is relatively high (higher than the allowable value of the national standard), and powder selection is generally required. The traditional powder selection method is to use a sand washing machine or a powder selection machine for powder selection. The sand machine needs to consume a lot of water resources, and the sewage will cause secondary pollution. The use of a powder separator will consume a lot of energy and is uneconomical. [0003] In the original production system, if you want to adjust the gradation of machine-made sand, there are two main methods, one is to use impact crushing combined with rod mill or roller crushing combined sand making, and ...

AI Technical Summary

Problems solved by technology

[0002] Machine-made sand is formed by crushing stones. After crushing, the content of stone powder is relatively high (higher than the allowable value of the national standard), and powder selection is generally required. The traditional powder selection method is to use a sand washing machine or a powder selection machine for powder selection. The sand machine needs to consume a lot of water resources, and the sewage will cause secondary pollution. Using a powder separator will consume a lot of energy and is uneconomical

[0003] In the original production system, if you want to adjust the gradation of machine-made sand, there are two main methods, one is to use impact crushing combined with rod mill or roller crushing combined sand making, and the other is to adjust through air screen, but the two methods This method cannot realize fine control of machine-made sand gradation

[0004] In addition, the surface of the machine-made sand particles produced by the vertical shaft impact crusher is rough, with many edges and corners. When configuring concrete, the amount of cement and water is large

[0005] Therefore, aiming at the problems of complex production process, high energy consumption and serious pollution in the existing machine-made sand production process, the present invention provides a high-quality machine-made sand production process, and the machine-made sand produced by this process can partially solve this problem