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Preparation method of copper mine tailing haydite for landscaping

A technology for landscaping and copper tailings, applied in the field of copper tailings ceramsite for landscaping, can solve the problems of complex research process and few researches, etc., and achieve the effects of high strength, promotion of absorption and utilization, and optimization of bonding effect.

Inactive Publication Date: 2016-06-15
CHENGDU YUYA TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the above research processes are quite complicated, and there are few studies on the preparation of ceramsite from copper tailings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing copper tailings ceramsite for landscaping, comprising the following preparation process:

[0023] (1) Copper tailings pretreatment: select abandoned copper tailings, the particle size is 8mm, the chemical composition is mainly alumina and silica, and also contains a small amount of iron oxide, copper oxide and other impurities; the copper tailings are ground Fine, so that the particle size is less than 0.5mm; then dehydrated at 110°C, and pre-fired at 950°C for 2 hours; cooled with the furnace, and ground again, so that the particle size is less than 0.1mm;

[0024] (2) Acidic waste liquid immersion: The pretreated copper tailings are subjected to acidic waste liquid immersion, the pH value of the acidic waste liquid is 3, the immersion temperature is 55°C, and the immersion time is 6 hours, and the immersion liquid after acidic waste liquid immersion and Copper tailings impregnated with acid waste liquid;

[0025] (3) Mixing and stale: mix the f...

Embodiment 2

[0029] A method for preparing copper tailings ceramsite for landscaping, comprising the following preparation process:

[0030] (1) Copper tailings pretreatment: select the abandoned copper tailings, the particle size is 7mm, the chemical composition is mainly alumina and silica, and also contains a small amount of iron oxide, copper oxide and other impurities; the copper tailings are ground Fine, so that the particle size is less than 0.5mm; then dehydrated at 110°C, and pre-fired at 950°C for 2 hours; cooled with the furnace, and ground again, so that the particle size is less than 0.1mm;

[0031] (2) Acidic waste liquid immersion: The pretreated copper tailings are subjected to acidic waste liquid immersion, the pH value of the acidic waste liquid is 4, the immersion temperature is 50°C, and the immersion time is 6 hours, and the immersion liquid after acidic waste liquid immersion and Copper tailings impregnated with acid waste liquid;

[0032](3) Mixing and staleness: Ta...

Embodiment 3

[0036] A method for preparing copper tailings ceramsite for landscaping, comprising the following preparation process:

[0037] (1) Copper tailings pretreatment: select abandoned copper tailings, the particle size is 9mm, the chemical composition is mainly alumina and silica, and also contains a small amount of iron oxide, copper oxide and other impurities; the copper tailings are ground Fine, so that its particle size is less than 0.5mm; then dehydrated at 110°C, and pre-fired at 950°C for 2 hours; cooled with the furnace, and ground again, so that its particle size is less than 0.1mm;

[0038] (2) Acidic waste liquid immersion: The pretreated copper tailings are subjected to acidic waste liquid immersion, the pH value of the acidic waste liquid is 4, the immersion temperature is 65°C, and the immersion time is 6 hours, and the immersion liquid after acidic waste liquid immersion and Copper tailings impregnated with acid waste liquid;

[0039] (3) Mixing and staleness: Take ...

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Abstract

The invention discloses a copper mine tailing haydite for landscaping and a preparation method thereof. The preparation method comprises the following steps: carrying out calcination pretreatment and acid waste liquid impregnation on copper mine tailings, reoptimizing raw material composition and contents of the haydite, and regulating the physicochemical properties of the haydite, thereby preparing the copper mine tailing haydite suitable for landscaping.

Description

technical field [0001] The invention belongs to the field of ceramsite, in particular to a copper tailing ceramsite for landscaping. Background technique [0002] The comprehensive recycling of waste is a matter of merit in the present and benefit in the future. Since the founding of the People's Republic of China, my country's mining enterprises have accumulated a large amount of tailings. Due to the single mining mode, backward mining technology and outdated mining equipment, a large number of tailings remain and cannot be effectively recycled and reused. In addition, the tailings themselves contain excessive pollutants or harmful components. Various chemicals added during the beneficiation process remain in the tailings. Without treatment, they are directly stacked on the surface, which not only takes up a lot of land, but also Also seriously polluted the surrounding environment. At the same time, in the post-processing process of minerals, there will often be acidic wa...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B18/12
CPCC04B18/12C04B28/14C04B18/0418C04B18/0409C04B18/08C04B18/146C04B7/02C04B18/24C04B22/165C04B14/40C04B22/144C04B22/06C04B16/0633C04B22/10C04B24/04C04B24/121C04B14/042C04B14/303C04B14/024C04B22/0046Y02W30/91
Inventor 刘丽梅
Owner CHENGDU YUYA TECH
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