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Copper tailing composite mineral mixed material and preparation method thereof

A technology of copper tailings slag and composite minerals, which is applied in the field of concrete composite admixtures and its preparation, can solve problems such as dam breaks, pollute the environment, occupy storage places, etc., and achieve the effect of improving the hydration crystal structure

Active Publication Date: 2018-06-05
江西万铜环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The survey shows that the annual management and stockpiling cost of Chengmenshan tailings in Jiangxi Province is 18-20 yuan / ton, and the annual tailings management cost in our province is more than 800 million yuan. Disaster; and occupy a large amount of storage area, pollute the environment and there is a risk of dam failure

Method used

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  • Copper tailing composite mineral mixed material and preparation method thereof
  • Copper tailing composite mineral mixed material and preparation method thereof
  • Copper tailing composite mineral mixed material and preparation method thereof

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Embodiment 1-8

[0052] Embodiment 1-8 all prepares a kind of copper tailings slag composite mineral admixture, in parts by mass, the composite mineral admixture of embodiment 1-8 is made of ground copper tailings slag, fly ash, active mineral admixture , Active stimulant is prepared, and its specific mixing ratio is shown in the following table 1:

[0053] The preparation method of the copper tailings slag composite mineral admixture comprises the following steps:

[0054] The first step is to dry or naturally air-dry the copper tailings slag with a particle size not greater than 500um until the moisture content is less than 4%;

[0055] In the second step, the copper tailings slag dried in the first step is treated by ball mill or powder selection vertical mill for 5-15 minutes, and the specific surface area is 400-500m 2 / kg and the activity index is 65%-70% finely ground copper tailings slag; the component content of the ground copper tailings slag gained after ball milling is as follows:...

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Abstract

The invention provides a copper tailing composite mineral mixed material which is prepared from the following raw materials in parts by mass: 25-50 parts of grinded copper tailings, 40-60 parts of coal ash, 0.4-1 part of an active activator and 0-35 parts of an active mineral mixed material, wherein the active activator is a mixture consisting of more than any three of calcium oxide, sodium metasilicate, sodium sulfate, sodium thiosulfate or sodium tripolyphosphate. By adopting the copper tailing composite mineral mixed material provided by the invention, high-cost raw materials such as coal ash are massively replaced by the copper tailings, high-value recycling of the copper tailings is achieved, environment protection can be facilitated, the cost of the mixed material is reduced, the mixed material has ideal activity as a whole, early-stage hydration crystallization structures and products of cement concrete are improved, and good late-stage strength is achieved. The invention further provides a method for preparing a premixed concrete mineral mixed material from copper tailings.

Description

technical field [0001] The invention relates to the field of ready-mixed concrete production and comprehensive utilization of solid waste resources, in particular to a concrete composite admixture prepared from copper tailings slag and a preparation method thereof. Background technique [0002] At present, the inventory of copper tailings in Jiangxi Province alone reaches 496.17 million tons, and the annual increase of copper tailings is 44 million tons. The comprehensive utilization rate of copper tailings resources is less than 1%, far below the average level of our country, and the unusable tailings are mostly treated by tailings dams. The survey shows that the annual management and stockpiling cost of Chengmenshan tailings in Jiangxi Province is 18-20 yuan / ton, and the annual tailings management cost in our province is more than 800 million yuan. Disasters; and occupy a large number of storage areas, pollute the environment and there is a risk of dam failure. Therefore...

Claims

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Application Information

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IPC IPC(8): C04B22/16
CPCC04B40/0039C04B18/144C04B18/08C04B22/064C04B12/04C04B22/147C04B22/16C04B18/142C04B18/146C04B14/14
Inventor 施麟芸刘松柏宋冬生
Owner 江西万铜环保材料有限公司
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