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Technology for making sand from sandstone

A technology of sandstone and craftsmanship, which is applied in the field of manufacturing technology of building materials, to achieve the effect of reducing construction production costs and solving engineering construction needs

Active Publication Date: 2009-09-09
SINOHYDRO BUREAU 5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing artificial sand making process, the present invention provides a sandstone sand making process to make up for the shortage of natural sand resources

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0016] Below in conjunction with embodiment the present invention is further described.

[0017] Sandstone sand making process, including the following processes:

[0018] Coarsely crush sandstone raw materials with a particle size of ≤200mm, and store the processed semi-finished raw materials:

[0019] A. After primary screening 1#, primary screening 2# and re-screening of semi-finished raw materials, the obtained sand with a particle size of <5mm is sent to the dehydration bin for dehydration, and it is finished sand;

[0020] B. Finely crush the sand and gravel with a particle size ≤ 150mm in the semi-finished raw materials; after fine crushing, carry out primary screening 1#, primary screening 2#, and re-screening of the sand and gravel <60mm, and obtain the sand with a particle size of <5mm The sand is sent to the dewatering bin for dehydration to become finished sand;

[0021] 1). Dehydrate the stones with a particle size of 80-150mm screened out in the primary screeni...

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Abstract

The invention discloses a technology for making sand from sandstone, comprising the steps of: coarse crushing and machining, storing the raw materials of semi-finished products, primary screening the raw materials of semi-finished products, rescreening, dehydrating, machining in a way of middle crushing, machining in a way of fine crushing, machining in a way of superfine crushing, making sand by a sand-making machine, treating and recovering sewage, etc. the invention is applicable for making the sand by taking the sandstone as raw material.

Description

Technical field [0001] The invention relates to a manufacturing process of building materials and belongs to the technical field of building materials. Background technique [0002] At present, the existing natural sand resources can no longer meet the needs of the project, and the use of artificial sand has become a development trend in the future. Generally, limestone is used to make sand, but limited by geographical conditions, limestone sand cannot meet the needs of most projects, and sandstone is required to make sand. Due to the strong abrasiveness and compactness of the lithology of sandstone itself, as well as its high-stress chisel abrasive wear, low-stress abrasion wear and erosion wear of loose abrasives, in the aggregate processing system process design, equipment selection, operation In addition, sandstone, as a fine aggregate, has a great influence on the performance of concrete due to its high water absorption rate and different granularity in the preparation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/06
Inventor 吴高见肖建中
Owner SINOHYDRO BUREAU 5
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