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Dry desliming method of rock stripping tailings

A technology of stripping rock tailings and desliming, which is applied in the field of resource utilization of solid waste, which can solve the problems of lack of water mining areas, drainage, and difficulty in water washing, so as to reduce the washing water of gravel, save water resources, and reduce soil waste. residual effect

Inactive Publication Date: 2016-09-14
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Using a large amount of water to wash the gravel before selling it can increase its price, but a large amount of waste water will be generated during the washing process, and there is a problem of discharge. At the same time, in mining areas that lack water sources, water washing is also difficult.

Method used

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  • Dry desliming method of rock stripping tailings
  • Dry desliming method of rock stripping tailings
  • Dry desliming method of rock stripping tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The total amount of crushed stones and tailings produced during the mining and processing of rock tailings in the early stage is about 8:1 (soil content 11.1%). The total amount of gravel is about 900 tons, of which the total amount of soil is about 100 tons, and a total of 10 tons of desliming agent is added according to the proportion of 10% of the total amount of soil in the excavation tailings area;

[0034] Use an excavator to dig a large pit of 3m×3m×1m in the center of the tailings excavation area, add 10 tons of deslimer to it, and then use a forklift and excavator to excavate the tailings The tailings in the area are repeatedly piled up and then flattened until the deslimer is evenly mixed with the excavated tailings;

[0035] Put the mixed excavated tailings at room temperature for 6 hours to make the deslimer fully react with the soil particles in the excavated tailings;

[0036] After the standing time is sufficient, use the excavator to load the excavated ...

Embodiment 2

[0040] The total amount of crushed stones and tailings generated at the tail end during the early mining and processing of rock stripping tailings is about 6:1 (soil content 14.3%). The total amount of gravel is about 1,350 tons, of which the total amount of soil is about 193 tons, and a total of 29 tons of desliming agent is added according to the proportion of 15% of the total amount of soil in the excavation tailings area;

[0041] Use an excavator to dig a 5m×5m×1m large pit in the center of the tailings excavation area, add 29 tons of deslimer to it, and then use a forklift and excavator to excavate the tailings The tailings in the area are repeatedly piled up and then flattened until the deslimer is evenly mixed with the excavated tailings;

[0042] Put the mixed excavated tailings at room temperature for 8 hours to make the deslimer fully react with the soil particles in the excavated tailings;

[0043] After the standing time is sufficient, use the excavator to load the...

Embodiment 3

[0047] The total amount of gravel and tailings generated during the mining and processing of rock stripping tailings in the early stage is about 4:1 (soil content 20.0%). The total amount of gravel is about 600 tons, of which the total amount of soil is about 120 tons, and a total of 24 tons of desliming agent is added according to the proportion of 20% of the total amount of soil in the excavation tailings area;

[0048] Use an excavator to dig a 5m×5m×1m large pit in the center of the tailings excavation area, add 24 tons of deslimer to it, and then use a forklift and excavator to excavate the tailings The tailings in the area are repeatedly piled up and then flattened until the deslimer is evenly mixed with the excavated tailings;

[0049] Put the mixed excavated tailings at room temperature for 12 hours, so that the deslimer fully reacts with the soil particles in the excavated tailings;

[0050] After the standing time is sufficient, use the excavator to load the excavat...

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Abstract

The invention discloses a rock-peeling gangue dry-process desliming method. A desliming agent is added into a dug gangue region and is uniformly mixed, and then is subjected to the steps of standing, crushing and sieving. A soil curing principle is applied to exploration and machining of rock-peeling gangues; the desliming agent is added so that the shape and appearance of a crushed stone product can be remarkably improved, and the mud residues can be greatly reduced; the mud content index meets the requirements of II-type products in GB / t14685-2011 and above. The method disclosed by the invention is a dry-process process so that water for washing crushed stones can be greatly reduced and water resources are saved; the method has obvious environmental benefits and social benefits, and has particularly remarkable effects on arid regions lack of the water resources.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of solid waste, and in particular relates to a dry desliming method of rock stripping tailings. Background technique [0002] In concrete engineering, it is necessary to use a large number of crushed stones of various sizes as coarse aggregates, and the surface of the crushed stones is required to be clean and free of sediment residues. This is mainly because the specific surface area of ​​sediment is large, and when it is mixed in the concrete mixture, it is easy to react with the powder cement in the concrete before the crushed stone aggregate, so that the bonding phase is preferentially formed in the small sediment particles. In between, a certain amount of cementing material is consumed, resulting in insufficient production of bonding phase at the interface between large-grained coarse aggregates, which has a great impact on the strength of concrete structure and engineering quali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/12
CPCY02W30/91
Inventor 康凌晨卢丽君汤静芳汪琪薛改凤黄建阳熊家剑杨玉张垒李丽坤
Owner 武汉钢铁有限公司
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