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High-efficiency and low-energy tailings dry discharge process

A low energy consumption and tailings technology, applied in wet separation, water/sludge/sewage treatment, solid separation, etc., can solve problems such as waste of water, groundwater pollution, and increased cost of mineral powder, so as to save water resources and solve Pollution and the effect of reducing operating costs

Inactive Publication Date: 2012-02-01
吴爱华
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  • Application Information

AI Technical Summary

Problems solved by technology

The accumulated tailings expenses generated during the service life of the tailings pond are as high as 40-50 million yuan, which results in an increase of 10 yuan / ton in the cost of mineral powder
The sewage leakage of the tailings pond reaches 3-5% of the total water consumption, which brings serious pollution to the groundwater and waste of water, and the annual water loss due to leakage reaches millions of yuan

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment one: a mining company's iron concentrator.

[0024] The raw water quality data of the mine tailings are: the tailings displacement per hour is 100 tons, the average weight percentage of solids in raw water is 23%, the particle size of solids in raw water is 2μm-1.8mm, and the weight percentage of ultrafine solids below 25μm 5%.

[0025] According to the design and calculation of the above parameters, the primary sewage concentration process adopts a composite cyclone with a processing capacity of 120t / h, the coarse particle dehydration process adopts a single-layer dewatering screen with a 0.25mm sieve gap, and the medium particle dehydration process adopts a single-layer dehydration 2 sets of sieves, the sewage secondary concentration process is as follows: the sewage is pressurized by a pump with a head of 20 meters and then sent to the cyclone, and the 8-43 micron particle material is concentrated by the cyclone and discharged from the sewage outlet, and t...

Embodiment 2

[0027] Embodiment 2: certain iron processing plant.

[0028] The raw water quality data of the mine tailings are: tailings displacement of 60 tons per hour, the average weight percentage of solids in raw water is 22%, the particle size of solids in raw water is 0μm-1.5mm, and the weight percentage of ultrafine solids below 25μm was 1.7%.

[0029] According to the design and calculation of the above parameters, the primary sewage concentration process adopts a composite cyclone with a processing capacity of 80t / h, the coarse particle dehydration process adopts a single-layer dewatering screen with a sieve gap of 0.35mm and a single-layer dewatering screen, and the medium particle dehydration process 2 single-layer dewatering screens, one sand-water cyclone separator with a diameter of 1.5 meters is used for the secondary concentration process of sewage, one single-layer dewatering screen is used for the fine particle dehydration process, and a composite inclined tube sedimentat...

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Abstract

The invention relates to a mine tailings water treatment method, in particular to tailings dry discharge and tailings water treatment process with high efficiency and low energy consumption. The technical scheme includes the following processes: primary sewage concentration process, coarse particle dehydration process, medium particle dehydration process, sewage secondary concentration process, fine particle dehydration process, micro particle concentration and dehydration process. The advantages and application effects of the present invention: greatly reduce the operating cost of the concentrator, and reduce the tailings treatment cost from 10 yuan per ton of mineral powder to 2 yuan; realize the completely closed operation of tailings sewage and waste water reuse or harmless discharge , save water resources, thoroughly solve the pollution of tailings sewage to the surrounding environment and groundwater; completely ban tailings ponds, and reduce mine safety hazards.

Description

Technical field: [0001] The invention relates to a mine tailings water treatment method, in particular to tailings dry discharge and tailings water treatment process with high efficiency and low energy consumption. Background technique: [0002] Mine tailings water treatment has always been a difficult problem in mine sewage treatment. Since the amount of mine tailings water reaches hundreds of tons or thousands of tons per hour, the amount of water to be treated is large; the solid content in the tailings water is 15-25%, and the particle size of the solids is generally 0μm-1.5mm, and the particle size of the solids in the water The distribution range is huge, which increases the difficulty of treatment. Therefore, mine tailings water is generally solved by tailings pond method. [0003] The current technological process is: the tailings water is discharged into the tailings pond through the mud pump, and the clear water after precipitation is sent back to the production w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00C02F9/02C02F1/38
Inventor 吴爱华吴楚勋
Owner 吴爱华
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