Thick-thin micro aggregate 6S processing process for concrete and production line

Abstract

The invention discloses a thick-thin micro aggregate 6S processing process for concrete and a production line. The thick-thin micro aggregate 6S processing process comprises the following steps: pretreating materials; performing circulatory multi-stage rough crushing and multi-stage desliming; performing circulatory multi-stage fine crushing and multi-stage powder concentrating, and preparing finesand and aggregates of different specifications and different limestone powder contents in proportion; and performing crushing and processing, and multistage winnowing, sorting and collecting on recycled dust materials. The whole sand-making production line is perfected, so that the system yield can be effectively increased, and finished product gravel aggregate quality can be effectively improved, and therefore, various grading and optimal grading of finished product gravel aggregates are realized; moreover, recycled powder waste is effectively recycled, treatment ability is strong, mountainflour grading can be precisely controlled, and mountain flour of various specifications is prepared; and the thick-thin micro aggregate 6S processing process is used for effectively improving durability and mechanical property of concrete, is low in production cost, and is efficient and energy-saving.

Description

technical field [0001] The invention relates to a 6S processing technology and production line of medium and fine aggregates for concrete, belonging to the technical field of sand making processing equipment and production technology. Background technique [0002] Sand and gravel aggregate is the basic raw material with the largest proportion (75-85%) in concrete. It is the basic particle for physical filling of concrete. Conventional concrete divides the filling material into gravel, rice stone, sand, stone powder, cement, and mineral powder. and fly ash. Industry standards define particles with a particle size of ≤0.075mm as stone powder. According to the scientific formula requirements of high-performance concrete, the fillers of coarse and fine aggregates in concrete are divided into hundreds, thousands, and ten thousand. mechanics and durability. [0003] At present, in the machine-made sand and gravel concrete industry, there is no technology and equipment for deep ...

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Problems solved by technology

[0004] (1) There is a lack of research on the fine gradation of stone powder, and the development of a deep-processing system for ultra-fine aggregates in accordance with the scientific formula of concrete has limited the development of the concrete industry

[0005] (2) The existing equipment in the grinding industry has low processing capacity and high energy consumption. The particle size of the product can only be controlled in a single way, and the product lacks diversification.

[0006] (3) The gradation of the existing stone powder is uncontrollable, and the stone powder is used as waste for reuse, and the filling value of the stone powder has not been fully utilized

[0007] (4) The applicant can efficiently produce finished sand and gravel aggregates in a high-quality sand and gravel aggregate five-double full-dry crushing production line and processing method disclosed by the application number 2019101516208, ensuring high efficiency and good quality, and producing The finished sand and gravel aggregate has the characteristics of excellent grading and multiple grading, but it does not involve stone powder processing technology; a crushing production line and method based on hard rock processing high-quality sand and gravel aggregate disclosed in the application number 2019111357072 , further improved the production of sand and gravel aggregates, can efficiently process hard rock materials, and added stone powder processing technology, but it uses existing grinding equipment for processing, single processing, high energy consumption, particle size can only be single-controlled, and the cost is relatively high high

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