Efficient activating agent for waste copper tailings and preparation method thereof

An activator and high-efficiency technology, applied in the field of high-efficiency activators for waste copper tailings slag powder, can solve the problems of low pozzolan ash activity, achieve the effects of reducing concrete prices, protecting mineral admixture resources, and excellent excitation effects

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

AI Technical Summary

Problems solved by technology

However, due to its low pozzolanic activity, its maximum dosage is only 8%

Method used

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  • Efficient activating agent for waste copper tailings and preparation method thereof
  • Efficient activating agent for waste copper tailings and preparation method thereof
  • Efficient activating agent for waste copper tailings and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A high-efficiency activator for waste copper tailings slag powder, which is composed of the following components by weight:

[0035]

[0036] Its preparation method is as follows:

[0037] Mix calcium oxide, sodium metasilicate, sodium sulfate and sodium tripolyphosphate uniformly according to the above weight ratio to form a mixture; heat the obtained mixture in an oven at a temperature of 100°C for 6 hours; dry the heated mixture for another 6 hours Finally, grind until the specific surface area is greater than 300m 2 / kg, that is to obtain a high-efficiency activator for waste copper tailings slag powder.

[0038] The calcium oxide is chemically pure, its CaO content is ≥ 90%, and its relative density is 3.32-3.35g / cm 3; Described sodium metasilicate is chemically pure, and its Na 2 SiO 3 Content ≥ 90%, relative density 1.05 ~ 1.35g / cm 3 ; Described sodium sulfate is chemically pure, and its Na 2 SO 4 Content ≥ 90%, relative density 1.667g / cm 3 ; Described...

Embodiment 2

[0040] A high-efficiency activator for waste copper tailings slag powder, which is composed of the following components by weight:

[0041]

[0042] Its preparation method is as follows:

[0043] Mix calcium oxide, sodium metasilicate, sodium sulfate and sodium tripolyphosphate uniformly according to the above weight ratio to form a mixture; heat the obtained mixture in an oven at a temperature of 90°C for 6 hours; dry the heated mixture for another 6 hours Finally, grind until the specific surface area is greater than 300m 2 / kg, that is to obtain a high-efficiency activator for waste copper tailings slag powder.

[0044] The calcium oxide is chemically pure, its CaO content is ≥ 90%, and its relative density is 3.32-3.35g / cm 3 ; Described sodium metasilicate is chemically pure, and its Na 2 SiO 3 Content ≥ 90%, relative density 1.05 ~ 1.35g / cm 3 ; Described sodium sulfate is chemically pure, and its Na 2 SO 4 Content ≥ 90%, relative density 1.667g / cm 3 ; Described...

Embodiment 3

[0046] A high-efficiency activator for waste copper tailings slag powder, which is composed of the following components by weight:

[0047]

[0048] Its preparation method is as follows:

[0049] Mix calcium oxide, sodium metasilicate, sodium sulfate and sodium tripolyphosphate uniformly according to the above weight ratio to form a mixture; heat the obtained mixture in an oven at a temperature of 110°C for 4 hours; dry the heated mixture for another 6 hours Finally, grind until the specific surface area is greater than 300m 2 / kg, that is to obtain a high-efficiency activator for waste copper tailings slag powder.

[0050] The calcium oxide is chemically pure, its CaO content is ≥ 90%, and its relative density is 3.32-3.35g / cm 3 ; Described sodium metasilicate is chemically pure, and its Na 2 SiO 3 Content ≥ 90%, relative density 1.05 ~ 1.35g / cm 3 ; Described sodium sulfate is chemically pure, and its Na 2 SO 4 Content ≥ 90%, relative density 1.667g / cm 3 ; Describe...

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Abstract

The invention provides an efficient activating agent for waste copper tailings. The efficient activating agent is prepared by mixing the following components in parts by weight: 20-40 parts of calciumoxide, 30-40 parts of sodium metasilicate, 20-30 parts of sodium sulfate, and 6-10 parts of sodium tripolyphosphate. With the adoption of the activating agent, the pozzolanic activity of the waste copper tailing powder can be obviously improved; 1-2% of the activating agent is doped in the waste copper tailings and capable of increasing the pozzolanic activity by 35-75%, so that the technical problems of treating and recycling the waste copper tailings can be solved. The invention also provides a method for preparing the efficient activating agent for the waste copper tailings.

Description

technical field [0001] The invention belongs to the technical field of industrial solid waste recycling, and in particular relates to a high-efficiency activator for waste copper tailings slag powder and a preparation method thereof. Background technique [0002] According to relevant data, the inventory of copper tailings in my country has reached 6 billion tons, and the annual increase of copper tailings is 400 million tons. These copper tailings slag are stored in the tailings dam. These dams not only endanger the surrounding environment, occupy a large amount of cultivated land, and endanger the personal safety of local residents, but it is urgent to improve the recycling rate of copper tailings. Therefore, the resource utilization of waste copper tailings slag has become a research hotspot in various countries. [0003] Grind the waste copper tailings slag in a special grinding equipment for 10 minutes to obtain a specific surface area of ​​more than 300m 2 / Kg of wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/16
CPCC04B40/0039C04B22/064C04B22/147C04B22/16C04B22/08
Inventor 张立明刘松柏施麟芸宋冬生
Owner 江西万铜环保材料有限公司
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