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Processing method of high-quality machine-made sand

A processing method and machine-made sand technology, which is applied in the direction of grain processing, etc., can solve the problems that high-quality machine-made sand cannot be produced according to demand, the machine-made sand has poor sphericity, and does not conform to green production, so as to achieve low infrastructure and equipment investment and high particle size. The effect of good shape and easy maintenance

Inactive Publication Date: 2021-06-25
CHINA RAILWAY FIRST GRP CO LTD
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Problems solved by technology

[0005] At present, the machine-made sand production system using crushers has poor sphericity, and high-quality machine-made sand cannot be produced according to demand. In addition, the on-site dust collection effect is poor during the production process, and dust is serious during production, which does not meet the requirements of green. Production requirements urgently need to be improved

Method used

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  • Processing method of high-quality machine-made sand
  • Processing method of high-quality machine-made sand

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Embodiment 1

[0039] Such as figure 1 As shown, this embodiment proposes a processing method for high-quality machine-made sand, which specifically includes the following steps:

[0040] Step 1. Preparation of raw materials: Preliminary screening of raw materials. In this embodiment, limestone is selected as raw material, impurities and debris in limestone are removed, and then stored in a raw material warehouse for subsequent use;

[0041] Step 2. Coarse crushing: use an automatic feeder to transport the limestone raw material from the raw material warehouse to the jaw crusher for coarse crushing to obtain crushed stones;

[0042] Step 3, secondary shaping and crushing: transport the roughly crushed crushed stones to the cone crushing and shaping sand making machine for secondary shaping and crushing to obtain sand and gravel with a smaller diameter;

[0043] Step 4. Screening: use the No. 1 vibrating screen to screen the sand and gravel obtained after the secondary shaping and crushing, ...

Embodiment 2

[0050] Such as figure 2 As shown, this embodiment proposes a processing method for high-quality machine-made sand, which specifically includes the following steps:

[0051]Step 1. Preparation of raw materials: Preliminary screening of raw materials. In this embodiment, limestone is selected as raw material, impurities and debris in limestone are removed, and then stored in a raw material warehouse for subsequent use;

[0052] Step 2. Coarse crushing: use an automatic feeder to transport the limestone raw material from the raw material warehouse to the jaw crusher for coarse crushing to obtain crushed stones;

[0053] Step 3, secondary shaping and crushing: transport the roughly crushed crushed stones to the cone crushing and shaping sand making machine for secondary shaping and crushing to obtain sand and gravel with a smaller diameter;

[0054] Step 4. Screening: use the No. 1 vibrating screen to screen the sand and gravel obtained after the secondary shaping and crushing, ...

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Abstract

The invention provides a processing method of high-quality machine-made sand, and belongs to the technical field of sand making processes. The processing method specifically comprises the following steps: 1, preparing raw materials; 2, conducting coarse crushing; 3, conducting secondary shaping and crushing; 4, screening; 5, shaping and crushing for the third time; 6, conducting secondary screening; 7, conducting sand washing; 8, dehydrating and recycling; and 9, performing tail slurry treatment. According to the processing method, through three times of crushing, two times of screening, at least two times of water washing and two times of shaping, it is ensured that the grain size of a sand-gravel material reaches the standard, the grain size and shape are good, discharging is uniform, high yield and low consumption are achieved, and economy and practicability are achieved; through a tail slurry environment-friendly treatment system, mud and water are rapidly separated, clear water reaches the national emission standard and is recycled, and the environment-friendly effect is achieved; and sediment is dehydrated through a belt filter press and extruded into a mud cake which is used for slope greening of a project, so that the method is green and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of sand making technology, in particular to a processing method of high-quality machine-made sand. Background technique [0002] Sand is the main material of concrete. It is generally called fine aggregate in construction. It plays a filling role in concrete products, can improve the compactness of concrete, and has a great influence on the performance of concrete. [0003] Sand is mainly divided into two types: natural sand and machine-made sand. At present, the construction sand in my country is still dominated by natural sand. However, with the development of the construction industry and the emphasis on the quality of construction projects, the amount of sand used in the construction market is also increasing. At the same time, the quality requirements are also getting higher and higher, and qualified natural sand resources are becoming less and less. Especially for Yunnan and Guizhou, where natural san...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C23/14
CPCB02C21/00B02C23/14
Inventor 李季晖薛指辉惠力伟
Owner CHINA RAILWAY FIRST GRP CO LTD
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