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Method for manufacturing construction sand by virtue of copper ore dump leaching slag

A technology for heap leaching slag and slag from copper mines, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve problems such as high cost, destruction of land, mountains and forests, and achieve the effect of avoiding waste water discharge and overcoming adverse effects.

Active Publication Date: 2014-10-08
罗光臣
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  • Abstract
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  • Application Information

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Problems solved by technology

The cost of rock mining and rock crushing is very high, and the damage to the land, mountains and forests is also very serious.

Method used

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  • Method for manufacturing construction sand by virtue of copper ore dump leaching slag

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Embodiment Construction

[0020] like figure 1 Shown, a kind of method that utilizes copper ore heap leaching slag to manufacture construction sand, the present invention utilizes copper ore heap leaching slag as sand-making raw material, utilizes screening to control the slag particle size that enters sand-making process, adds and removes in sand-making process The residual trace sulfuric acid and copper sulfate in the copper ore heap leaching slag are removed by the agent, and the deslimed sand in the sand making process is soaked and rinsed in neutral water to produce construction sand after desliming.

[0021] In the present invention, the copper ore heap leaching slag is screened, the slag under the screen enters the sand making process, the slag on the sieve with high copper grade is broken and returned to the heap leaching, and the slag on the screen with low copper grade is broken and returned to the sand making process, wherein The high grade of the copper content is 0.1%-0.5%; the low grade ...

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Abstract

The invention discloses a method for manufacturing construction sand by virtue of copper ore dump leaching slag. The method comprises the following steps of: using the copper ore dump leaching slag as a sand manufacturing raw material, controlling the granularity of ore slag entering a sand manufacturing flow by sieving, adding a remover in the sand manufacturing process to remove trace sulphuric acid and copper sulphate in the copper ore dump leaching slag, removing muddy water from the sand after mud removal in the sand manufacturing process through a neutral clear water soaking and rinsing procedure link, and then producing the construction sand. According to the method disclosed by the invention, the construction sand is produced by virtue of the copper ore dump leaching slag, thus the waste copper ore dump leaching slag is effectively utilized, high-quality engineering construction sand is provided, the damages of construction sand exploitation to river rapids, lakes, beaches, mountain forests and lands are reduced, land occupancy for stacking the copper ore dump leaching slag is reduced, and water and soil loss and environmental pollution are reduced. The method disclosed by the invention has a great popularization and application prospect for districts with the copper ore dump leaching slag and construction sand needs.

Description

technical field [0001] The invention belongs to the technical field of mining waste slag utilization and building materials. Background technique [0002] Copper ore heap leaching is a copper mineral leaching process. This method uses the leaching agent sulfuric acid solution to infiltrate the copper ore heap to dissolve the useful component copper. Copper ore heap leaching and copper-containing waste rock heap leaching are collectively referred to as copper ore heap leaching. After decades of copper ore heap leaching production, the world has Hundreds of billions of tons of copper ore heap leaching slag have been stockpiled, and heap leaching slag will continue to be produced in the copper ore heap leaching production in the future. Most of the bedrock of copper mine heap leaching slag is sandstone, porphyry, skarn, granite, basalt, containing 40%-98% silicon dioxide, and its material and hardness are mostly suitable for producing construction sand. The particle size of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00A62D3/33A62D101/47
Inventor 罗光臣郭绍斌余兴旺柳发章金国文
Owner 罗光臣
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