Method for producing aerated concrete building block by using fluorite tailings

A kind of technology of aerated concrete and fluorite tailings, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as safety accidents and environmental pollution, and achieve quality improvement, product quality assurance, and return improvement The effect of utilization

Inactive Publication Date: 2013-03-20
ZHEJIANG WUYI SHENLONG FLOATATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the use of tailings stockpiling treatment not only requires a lot of manpower and funds for the operation and management of tailings ponds, but also easily causes environmental pollution and safety accidents, and the construction of tailings ponds also requires a lot of land resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] ① Fluorite tailings (calcium fluoride content is about 6%) in the production line of the concentrator are pumped to the classifier for particle size classification to separate particles larger than 0.1mm.

[0027] ② Separate the tailings with particles larger than 0.1mm into the thickener for desliming and drug removal. (The concentrator is a kind of pulp dehydration and concentration equipment. In the concentrator, the ore pulp uses the sedimentation of minerals in the water medium to achieve solid-liquid separation. The minerals settle at the bottom of the concentrator and are discharged from the ore outlet of the concentrator. Water flows from the concentrator Discharge from the upper overflow port. Generally, the water content of minerals discharged from the bottom of the concentrator is 30~40%. The solid content of the concentrator overflow is related to the specification of the concentrator. The concentrator has a large specification and the overflow solid content ...

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Abstract

The present invention provides a method for producing an aerated concrete building block by using fluorite tailings, wherein a main raw material ratio of fluorite tailings to lime to cement to industrial gypsum to aluminum powder is 60-80:10-20:10-15:2-5:0.006-0.007. The method comprises: carrying out particle size separation and an agent and slime treatment on fine grain fluorite tailings, and adding water to stir to prepare a slurry; adding lime, cement, industrial gypsum and aluminum powder to a material mixing stirrer according to a certain ratio, and completely stirring; casting the obtained material into a mold frame, carrying out gas evolution, and cutting; and carrying out steam curing through a steam curing kettle to produce the product. The produced aerated concrete building block has characteristics of good thermal insulation property, small specific gravity and white color, has a strength of higher than strength of fly ash building block, and is an aerated concrete building block having excellent performances. With the method, complete fluorite tailings utilization can be achieved, zero solid waste emission can be achieved, and reuse rate of water for production in concentrators can be improved.

Description

(1) Technical field [0001] The invention relates to a method for producing aerated concrete blocks by using fluorite tailings, and belongs to the technical field of industrial solid waste reuse. (2) Background technology [0002] The tailings discharged from the concentrator are solid waste generated during the production process, and the amount is huge, generally several to dozens of times the amount of the product. For a long time, the use of tailings stockpiling treatment not only requires a lot of manpower and funds for the operation and management of tailings ponds, but also easily causes environmental pollution and safety accidents, and the construction of tailings ponds also requires a lot of land resources. [0003] Therefore, it is a good way to use tailings to produce building materials. [0004] Aerated concrete blocks can use many industrial solid wastes as raw materials, the most common is the solid waste of power plants - fly ash. Due to the large difference ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/04
CPCY02W30/91
Inventor 朱贤林陈广廖珍英周斌胜
Owner ZHEJIANG WUYI SHENLONG FLOATATION
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