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Shell breaking, retention and desliming system of machine-made sand and desliming process thereof

A technology of machine-made sand and shell breaking, applied in grain processing and other directions, can solve the problem of low production efficiency, and achieve the effect of improving quality and reducing pretreatment processes.

Inactive Publication Date: 2021-03-23
SINOHYDRO BUREAU 9
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The principle of the existing technology is to add desliming agent to the wool, mix and stir, and wait for the desliming agent to react with the soil before breaking the shell, or use a rod feeder for pre-screening before breaking the shell, as shown in the publication number CN104860560B is a dry desliming method for rock stripping tailings, which mixes mined wool with a desliming agent and then crushes and screens it, but it requires 4 to 18 hours of standing time to let the desliming agent and the soil on the wool Full reaction, the production efficiency is not high, and it needs to be fully mixed with the deslimer and the wool to produce the effect

Method used

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  • Shell breaking, retention and desliming system of machine-made sand and desliming process thereof
  • Shell breaking, retention and desliming system of machine-made sand and desliming process thereof
  • Shell breaking, retention and desliming system of machine-made sand and desliming process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Pass the natural soil sample taken through a 3.0mm mesh sieve to separate impurities such as pebbles and tree roots.

[0040] Take 30Kg of sieved soil sample and adjust it into mud with 15L of water. Put 100Kg of gravel into the mud, make the mud evenly wrap the surface of the gravel, take it out and let it dry naturally at room temperature for 12 hours. Record the total mass W1 of the mud-coated gravel sample after air-drying.

[0041] S1. The unloading hopper 2 feeds the material in the dump truck 1 into the coarse crusher 4 for crushing;

[0042] The material crushed by the coarse crusher 4 is transported to the secondary crusher 6 through the first conveyor belt 5;

[0043] Secondary crusher 6 crushes the medium material, and then transports the material to the compound sieve 7 through the second conveyor belt 8 for screening, then weighs the weight of the finished material W2 and the useless material W3 respectively

[0044] W2 is 98Kg, and W2 is 32Kg.

Embodiment 2

[0046] In this embodiment, by controlling the conveying speed of the conveyor belt, the feeding speed is adjusted between the crusher and the vibrating screen according to different materials and their attachments, so that the crusher can fully deslim the materials;

[0047] During the implementation process, the feeding speed of the bar feeder 3, the first conveyor belt 6, and the second conveyor belt 8 is 100 tons / hour, and the surface of the material screened by the vibrating screen has no soil adhesion.

Embodiment 3

[0049] Such as image 3 As shown, the first screen 2, the second screen 3, and the third screen 4 are set in the vibrating screen 1. If there is no particle size of the material, the third screen needs to be used, and the fine material first enters through the inlet port of the vibrating screen. The first sieve, the larger-sized aggregates are left on the screen surface of the first sieve 2, and under the action of the vibrating screen, they are piled up at the outlet and blocked by the first reversing door 5 to prevent them from falling. The material falls on the second screen 3 and is screened, and the same material with larger particle size remains on the screen surface of the second screen and accumulates to its outlet, and is blocked by the second reversing door 6; then the material with smaller particle size falls On the third sieve 4, the third sieve 4 keeps the aggregate with smaller particle size on the sieve surface for storage, and the fine useless materials fall in...

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Abstract

The invention provides a shell breaking, retention and desliming process for machine-made sand. The process comprises the following steps that coarse crushing is carried out, raw materials are directly fed into a primary crusher, primary crushing is carried out on the raw materials by virtue of the crusher to form coarse materials, then medium crushing is carried out, secondary crushing is carriedout on the coarse materials by virtue of a medium crusher to form fine materials, screening is carried out, unused materials are and screened out by virtue of a vibrating screen, the granularity of materials is reduced through a coarse crusher, a part of soil is removed, the materials are crushed into small-granularity materials through the medium crusher to be screened, pretreatment procedures such as pre-screening are reduced, and the quality of finished sand is improved.

Description

technical field [0001] The invention relates to a machine-made sand shell breaking and careful desliming system and a desliming process thereof. Background technique [0002] In the machine-made sand production industry, when there are useless materials with strong adhesion such as clay in the raw materials, these sieve materials will be attached to the surface of the coarse aggregate, and it is difficult for this part of useless materials to be recovered from the useless materials by screening and washing. Separation from the raw materials, because in order to remove this part of the useless materials attached to the surface of the useful materials. [0003] The principle of the existing technology is to add desliming agent to the wool, mix and stir, and wait for the desliming agent to react with the soil before breaking the shell, or use a rod feeder for pre-screening before breaking the shell, as shown in the publication number CN104860560B is a dry desliming method for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C23/16B02C23/14
CPCB02C21/00B02C23/16B02C23/14B02C2023/165
Inventor 王军胡中阔严章国覃信海杨再勇张昌晶杨胜军邓兵邓飞邱芸雍丽兰
Owner SINOHYDRO BUREAU 9
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