Fine aggregate processing production system

Abstract

The invention discloses a fine aggregate processing production system, which is characterized in that raw materials enter a sand making machine through a feeding device for sand crushing and making, obtained sand is conveyed to a screening screen for classification, wherein the sand with the particle size of 0-5mm is conveyed to a sand powder separation machine for sand separation; the sand with particle size larger than 5mm is classified into two categories, the sand with the particle size larger than 26mm is conveyed to the sand making machine for remaking, and the sand with the particle size of 5-16mm is conveyed to a grading adjustment machine connected with the screening screen for shaping and is returned to the sand making machine again for sand making. The fine aggregate processing production system adopts electric control centralized control, and grading adjustment is simultaneously performed during sand making so that production flow is shortened. The fine aggregate processing production system is provided with a dust removing and humidification device so as to achieve zero-emission production and save cost, and has huge economic value.

Description

technical field [0001] The invention relates to a processing technology and production equipment of ready-mixed concrete aggregate, in particular to a high-quality aggregate processing and production system. Background technique [0002] The raw materials of ready-mixed concrete produced by existing concrete production enterprises mainly include aggregate (aggregate is mainly composed of gravel and sand), cement, mineral admixture, admixture and water. Among them, aggregate is one of the main raw materials, and its consumption is the largest. At present, there are problems with aggregates: [0003] (1) Coarse aggregate is produced by ordinary jaw crusher, so that the content of needle-like particles in the coarse aggregate is high, the void ratio is large, and the quality fluctuates significantly, resulting in a significantly large amount of cement in the concrete mixture, and the cost rise. [0004] (2) Due to many years of mining, the resources of river sand are getting ...

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Problems solved by technology

[0003] (1) Coarse aggregates are produced by ordinary jaw crushers, so that the content of needle-like particles in the coarse aggregates is high, the void ratio is large, and the quality fluctuates significantly, resulting in a significantly large amount of cement in the concrete mixture, and the cost rise

[0004] (2) Due to years of mining, the resources of river sand are getting less and less, which cannot meet the market demand, and the price is soaring. The supply and quality of the river sand are not guaranteed, and the quality is unstable. As a result, the laboratory often adjusts the mix ratio, resulting in a significant deviation in the amount of cement used in the concrete. Large, seriously dragging down the production and cost of enterprises

[0006] (4) There is no technical process for gradation adjustment. In the prior art, the sand prepared by the sand making machine directly enters the sieving device for classification to remove products that do not meet the standards. The sand that meets the standard is re-sand-made, which prolongs the production process and reduces production efficiency

[0007] The above-mentioned existing aggregate production technology can be summarized as aging equipment, cumbersome production process, low production efficiency and high cost

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