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Binder as well as preparation method and application thereof

A binder and red mud technology, which is applied in the field of binder and its preparation, can solve the problems of high energy consumption and limited products, and achieve good adsorption performance, good bonding effect, and sustainable development.

Active Publication Date: 2021-09-17
广西三秋树环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art, such as large energy consumption and limited products produced from carbide slag as raw materials, in order to provide a binder and its preparation method and application

Method used

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  • Binder as well as preparation method and application thereof
  • Binder as well as preparation method and application thereof
  • Binder as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment provides a kind of binder and its preparation method, and the preparation process is shown in figure 1 , the preparation method includes the following steps,

[0041] Add sodium hydroxide aqueous solution to 10wt%, 800kg tartaric acid aqueous solution to adjust the pH to 13, after adjusting the pH, stir and mix with 80kg calcium carbide slag passing through a 200 mesh sieve, take the lower layer solid product, dry at 70°C, and pass through a 200 mesh sieve , to get the binder.

[0042] This embodiment also provides a red mud pellet and a preparation method thereof, the preparation method comprising the following steps,

[0043] Crush the red mud to obtain red mud particles, pass through a 3mm sieve, and crush the oversize material again, so that the proportion of red mud particles smaller than 2mm reaches at least 90%. Mix 1000kg of undersize material with 50kg of the above binder evenly, Spray 100kg of water on the material and send it to the feed por...

Embodiment 2

[0047] This embodiment provides a kind of binder and preparation method thereof, and preparation method comprises the following steps,

[0048]Add sodium hydroxide aqueous solution to 6.67wt%, 360kg tartaric acid aqueous solution to adjust the pH to 13, after adjusting the pH, stir and mix with 60kg calcium carbide slag passing through a 200 mesh sieve, take the lower layer solid product, dry it at 80°C, pass through 200 mesh Sieve to get the binder.

[0049] This embodiment also provides a red mud pellet and a preparation method thereof, the preparation method comprising the following steps,

[0050] Crush the red mud to obtain red mud particles, pass through a 3mm sieve, and crush the oversize material again, so that the proportion of red mud particles smaller than 2mm reaches at least 90%. Mix 1000kg of undersize material with 50kg of the above binder evenly, Spray 80kg of water on the material and send it to the feed port of the briquetting machine for cold pressing treat...

Embodiment 3

[0052] This embodiment provides a kind of binder and preparation method thereof, and preparation method comprises the following steps,

[0053] Add sodium hydroxide aqueous solution to 6.25wt%, 560kg tartaric acid aqueous solution to adjust pH to 13, after adjusting pH, stir and mix with 70kg calcium carbide slag passing through 200 mesh sieve, take the lower layer solid product, dry at 60 ℃, pass through 200 mesh Sieve to get the binder.

[0054] This embodiment also provides a red mud pellet and a preparation method thereof, the preparation method comprising the following steps,

[0055] Crush the red mud to obtain red mud particles, pass through a 3mm sieve, and crush the oversize material again, so that the proportion of red mud particles smaller than 2mm reaches at least 90%. Mix 1000kg of undersize material with 50kg of the above binder evenly, Spray 80kg of water on the material and send it to the feed port of the briquetting machine for cold pressing treatment. The ma...

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Abstract

The invention belongs to the technical field of binder material preparation, and particularly relates to a binder as well as a preparation method and an application thereof. The preparation method comprises the following steps: mixing carbide slag with a tartrate solution, uniformly stirring, taking a lower-layer solid product, and drying to obtain the binder; and wherein the pH value of the tartrate solution is greater than or equal to 13. According to the method provided by the invention, tartaric acid radicals can be adsorbed on the surface of the carbide slag under a strong alkali condition, the tartaric acid and the carbide slag have relatively good complexing ability and adsorption performance, the obtained binder has a good binding effect, when the pH value is lower than 13, the tartaric acid and the carbide slag are subjected to a chemical reaction to generate calcium tartrate, the binder cannot play a binding role, and the bonding effect is poor. According to the preparation method provided by the invention, the carbide slag and the tartrate are used as raw materials, and the pH value of the tartrate solution is controlled, so that the binder with good binding property can be obtained, and the recycling of the carbide slag can be realized.

Description

technical field [0001] The invention belongs to the technical field of binder material preparation, and in particular relates to a binder and its preparation method and application. Background technique [0002] Calcium carbide slag is the waste residue produced when calcium carbide is used to produce acetylene, an important chemical raw material. The main component is calcium hydroxide, and it also contains inorganic substances such as calcium carbonate, sulfide, magnesium, iron and other metal oxides, hydroxides, and a small amount of organic matter. Calcium carbide residue belongs to general industrial solid waste. Long-term accumulation not only occupies a large amount of land, but also has a serious impact on land erosion. Turning carbide slag into treasure is conducive to the sustainable development of the entire industry. At present, the comprehensive utilization of carbide slag mainly includes building materials and roadbed raw materials, which not only reduces the ...

Claims

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Application Information

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IPC IPC(8): C22B1/243C21C5/36
CPCC22B1/243C21C5/36Y02P10/20
Inventor 何绪文顾勇唐乾山秦燚鹤
Owner 广西三秋树环保科技有限公司
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