Non-sintered antimony tailing brick and preparation process thereof

A preparation process, non-sintering technology, applied in the field of solid waste resource utilization, can solve the problems of environmental secondary pollution, environmental heavy metal pollution, hidden dangers, etc., and achieve the effects of improving the ecological environment, reducing porosity, and increasing compactness

Pending Publication Date: 2021-11-09
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disorderly stockpiling of antimony tailings, the leachate produced by the antimony tailings enters the surrounding water and soil under the leaching and washing of rainfall, causing serious heavy metal pollution to the environment
[0004] At present, the pollution and harm to the environment such as antimony tailings have not been completely cured. For a long time, a large number of antimony tailings have been hoarded and stored, and there is a hidden danger of secondary pollution to the environment.

Method used

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  • Non-sintered antimony tailing brick and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A non-sintered antimony tailings brick, comprising the following components: 50% aggregate, 40% tailings, 8% cement-based material, 2% water and 0.1% inorganic flocculant.

[0021] The main component in the tailings is SiO 2 , Fe 2 o 3 、Al 2 o 3 .

[0022] The inorganic flocculant is polyferric sulfate.

[0023] The cement-based material includes fly ash, silica fume and cement.

[0024] A preparation process for non-sintered antimony tailings bricks, comprising the following steps:

[0025] (1) Solidification treatment: Dissolve polyferric sulfate directly in the water used for mixing, configure it into a 0.1% polyferric sulfate solution, fully stir it with the tailings, let it stand for 1-2h, make it fully react, and realize harmful heavy metal elements of solidification.

[0026] (2) Mixing and stirring: add 50% aggregate, 40% solidified tailings, 8% cement-based material and 2% water to a base material mixer and fully stir to obtain a mixture.

[0027] (3) ...

Embodiment 2

[0031] A non-sintered antimony tailings brick, comprising the following components: 55% aggregate, 35% tailings, 8% cement-based material, 2% water and 0.1% inorganic flocculant.

[0032] The main component in the tailings is SiO 2 , Fe 2 o 3 、Al 2 o 3 .

[0033] The inorganic flocculant is polyferric sulfate.

[0034] The cement-based material includes fly ash, silica fume and cement.

[0035] A preparation process for non-sintered antimony tailings bricks, comprising the following steps:

[0036] (1) Solidification treatment: Dissolve polyferric sulfate directly in the water used for mixing, configure it into a 0.1% polyferric sulfate solution, fully stir it with the tailings, let it stand for 1-2h, make it fully react, and realize harmful heavy metal elements of solidification.

[0037] (2) Mixing and stirring: add 55% aggregate, 35% solidified tailings, 8% cement-based material and 2% water to a base material mixer and fully stir to obtain a mixture.

[0038] (3) ...

Embodiment 3

[0042] A non-sintered antimony tailings brick, comprising the following components: 45% aggregate, 45% tailings, 8% cement-based material, 2% water and 0.1% inorganic flocculant.

[0043] The main component in the tailings is SiO 2 , Fe 2 o 3 、Al 2 o 3 .

[0044] The inorganic flocculant is polyferric sulfate.

[0045] The cement-based material includes fly ash, silica fume and cement.

[0046] A preparation process for non-sintered antimony tailings bricks, comprising the following steps:

[0047] (1) Solidification treatment: Dissolve polyferric sulfate directly in the water used for mixing, configure it into a 0.1% polyferric sulfate solution, fully stir it with the tailings, let it stand for 1-2h, make it fully react, and realize harmful heavy metal elements of solidification.

[0048] (2) Mixing and stirring: add 45% aggregate, 45% solidified tailings, 8% cement-based material and 2% water to a base material mixer and fully stir to obtain a mixture.

[0049] (3) ...

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Abstract

The invention provides a non-sintered antimony tailing brick and a preparation process thereof. The non-sintered antimony tailing brick consists of the following components in percentage by weight: 45%-60% of aggregate, 30%-45% of tailings, 8% of a cement-based material, 2% of water and 0.1% of an inorganic flocculant. According to a preparation method of the non-sintered antimony tailing brick, antimony after innocent treatment is taken as fine aggregate and powder, and mix proportion design is carried out to prepare a masonry material of which the strength meets the engineering practical application requirement and the seepage concentration of heavy metals and toxic substances meets the environmental protection requirement. Harmful components in the antimony tailings can be effectively cured by utilizing the inorganic flocculant and the cement-based material, so that tailings waste is harmless and can be recycled, and waste is turned into wealth.

Description

technical field [0001] The invention relates to the technical field of resource utilization of solid waste, in particular to a non-sintered antimony tailings brick and a preparation process thereof. Background technique [0002] Antimony tailings are ore powders that are divided into antimony ore crushing, screening, hand selection, ball milling, and flotation stages. The main component of antimony tailings is SiO 2 , Fe 2 o 3 and Al 2 o 3 . [0003] my country is one of the countries that discovered and utilized antimony ore earlier in the world. After the founding of New China, large-scale geological exploration and development of antimony ore was carried out. The disorderly stockpiling of antimony tailings, and the leachate produced by the antimony tailings enter the surrounding water and soil under the washing of rainfall, which has caused serious heavy metal pollution to the environment. [0004] At present, the pollution and harm to the environment such as antim...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/08C04B18/14C04B18/12
CPCC04B28/00C04B18/08C04B18/146C04B18/12C04B2201/50C04B2111/00017C04B22/149Y02W30/91
Inventor 邓鹏李逸琳黄靓
Owner HUNAN UNIV
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