Processing system and construction method capable of improving fineness modulus of natural sand

A fineness modulus and processing system technology, applied in chemical instruments and methods, solid separation, filtration and sieving, etc., can solve the problem of excessive fine aggregate, insufficient sand content of natural sand, natural sand gradation and demand can not meet the construction Requirements and other issues to achieve the effect of improving output and production quality and reducing operating costs

Inactive Publication Date: 2014-02-05
CHINA GEZHOUBA GROUP NO 5 ENG
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  • Abstract
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Problems solved by technology

[0003] Restricted by natural conditions, the natural sand and gravel materials in some natural riverbeds of inland rivers contain too much fine aggregate, the sand content of natural sand i

Method used

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  • Processing system and construction method capable of improving fineness modulus of natural sand

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The present invention will be further described below in conjunction with the drawings.

See figure 1 , A processing system for improving the fineness modulus of natural fine sand, which includes sand conveying barge belt conveyor 1, sand conveying barge belt conveyor 1 is connected to wool yard 5 through second belt conveyor 2, third belt conveyor 4, and wool There are multiple electric vibrating feeders 6 at the lower part of the yard 5 to feed the fourth belt conveyor 8. A single-layer circular vibrating screen 9 is provided under the head of the fourth belt conveyor 8. The five-belt conveyor 10 is connected to the feed port of the jaw crusher 12 through the fifth belt conveyor 10, and the discharge port of the jaw crusher 12 is connected to the fourth belt conveyor 8 through the sixth belt conveyor 13, a single-layer circular vibrating screen 9 is connected to the semi-finished product yard 14 through the seventh belt conveyor 11 under the sieve. The lower part of the semi-...

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Abstract

The invention discloses a processing system and a construction method capable of improving the fineness modulus of natural sand. The advantage of high fine aggregate content of a natural river bed is fully utilized, and a vertical-axis impact crusher is selected to process small stones into artificial sand with high fineness modulus, so that the shortcomings of low natural sand content and low fineness modulus are compensated and overcome, the yield and production quality of the sand are improved, and the running cost of the whole system is also lowered. The system and the method are particularly applied to the working conditions of low fineness modulus, low natural sand content and high fine aggregate content of natural grits mined underwater.

Description

technical field [0001] The invention belongs to a processing system and a construction method for improving the fineness modulus of natural sand, and is especially suitable for working conditions where the fineness modulus of natural sand and gravel materials in underwater mining is relatively small, and the content of natural sand is insufficient and the fine aggregate is too much . Background technique [0002] Fineness modulus is an important index to measure the quality of sand, which directly affects the workability, strength, impermeability and durability of concrete. The existing construction code requires the fineness modulus of sand to be 2.4 to 2.8. [0003] Restricted by natural conditions, the natural sand and gravel materials in some natural riverbeds of inland rivers contain too much fine aggregate, the sand content of natural sand is insufficient, and the fineness modulus of sand is less than 2.0. The natural sand gradation and demand for direct screening and...

Claims

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Application Information

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IPC IPC(8): B02C21/00B02C23/00B07B1/28
Inventor 刘宏
Owner CHINA GEZHOUBA GROUP NO 5 ENG
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