Application of waste hydrofluoric acid etching solution to accelerating agent synthesis

A technology of hydrofluoric acid and etching solution, which is applied in the application field of waste hydrofluoric acid etching solution in the synthesis of accelerators, can solve the problem of increasing the investment in operating costs of enterprises, the inability to completely remove hydrofluoric acid, and the high energy consumption of processing. and other problems, to achieve the effect of reducing operating costs, strong complexing ability, and short coagulation time.

Inactive Publication Date: 2018-10-09
萧县沃德化工科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the above treatment method to deal with the presence of hydrofluoric acid cannot be completely removed, the treatment steps are complicated, the energy consumption of the treatment is large, and the investment in the operation cost of the enterprise is increased.

Method used

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  • Application of waste hydrofluoric acid etching solution to accelerating agent synthesis
  • Application of waste hydrofluoric acid etching solution to accelerating agent synthesis
  • Application of waste hydrofluoric acid etching solution to accelerating agent synthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The invention provides a kind of technology that utilizes waste hydrofluoric acid etchant to prepare quick-setting agent, and its technology comprises the following steps:

[0021] (1) Add 100 parts of deionized water to the four-necked flask, and use an alcohol lamp to heat the four-necked flask;

[0022] (2) When the temperature of the deionized water in the four-necked flask reaches 40°C, add 50 parts of aluminum hydroxide to the four-necked flask, stir evenly, then add 20 parts of waste hydrofluoric acid etching solution to the four-necked flask, and continue Heating, keeping the temperature at 85°C for 1h;

[0023] (3) Add 10 parts of boric acid and 10 parts of phosphoric acid successively to the mixed solution after the reaction in step (2), keep the temperature at 90° C., and the time is 0.5 h;

[0024] (4) Add 100 parts of deionized water and 300 parts of aluminum sulfate hydrate successively to the mixed solution after the reaction in step (3), keeping the tem...

Embodiment 2

[0027] The invention provides a kind of technology that utilizes waste hydrofluoric acid etchant to prepare quick-setting agent, and its technology comprises the following steps:

[0028] (1) Add 175 parts of deionized water to the four-necked flask, and use an alcohol lamp to heat the four-necked flask;

[0029] (2) When the temperature of the deionized water in the four-necked flask reaches 40°C, add 100 parts of aluminum hydroxide to the four-necked flask, stir evenly, then add 80 parts of waste hydrofluoric acid etching solution to the four-necked flask, and continue Heating, keeping the temperature at 85°C for 1h;

[0030] (3) Add 10 parts of boric acid and 10 parts of phosphoric acid successively to the mixed solution after the reaction in step (2), keep the temperature at 90° C., and the time is 0.5 h;

[0031] (4) Add 175 parts of deionized water and 450 parts of aluminum sulfate hydrate successively to the mixed solution after the reaction in step (3), keeping the te...

Embodiment 3

[0034] The invention provides a kind of technology that utilizes waste hydrofluoric acid etchant to prepare quick-setting agent, and its technology comprises the following steps:

[0035] (1) Add 122 parts of deionized water to the four-necked flask, and use an alcohol lamp to heat the four-necked flask;

[0036] (2) When the temperature of the deionized water in the four-necked flask reaches 40°C, add 58 parts of aluminum hydroxide to the four-necked flask, stir evenly, then add 30 parts of waste hydrofluoric acid etching solution to the four-necked flask, and continue Heating, keeping the temperature at 85°C for 1h;

[0037] (3) Add 13 parts of boric acid and 10 parts of phosphoric acid successively to the mixed solution after the reaction in step (2), keep the temperature at 90° C., and the time is 0.5 h;

[0038] (4) Add 122 parts of deionized water and 325 parts of aluminum sulfate hydrate successively to the mixed solution after the reaction in step (3), keeping the tem...

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Abstract

The invention discloses an accelerating agent containing waste hydrofluoric acid etching solution and a preparation method of the accelerating agent. The accelerating agent comprises, by weight, 200-350 parts of deionized water, 50-100 parts of aluminum hydroxide, 20-80 parts of waste hydrofluoric acid etching solution, 10 parts of phosphoric acid, 10-25 parts of acid, 15-50 parts of triethanolamine and 300-450 parts of aluminum sulfate hydrate. According to the application of the accelerating agent, the waste hydrofluoric acid etching solution can be directly used without being treated, recycling of the dangerous waste is achieved, environmental pollution caused by waste discharge can be avoided, the application of the accelerating agent solves the problem of complicated process, high energy consumption and cost and the like of treatment of the waste hydrofluoric acid etching solution and meets national promoted green production requirements, the operation cost of enterprises is reduced, the prepared accelerating agent can increase economic income of the enterprises, and three purposes are achieved at one stroke.

Description

technical field [0001] The invention relates to the technical field of hazardous waste recycling and preparation of accelerators, in particular to the application of waste hydrofluoric acid etching solution in the synthesis of accelerators. Background technique [0002] Hydrofluoric acid etching solution waste liquid contains relatively high concentration of hydrofluoric acid and inorganic fluoride, which is highly corrosive and belongs to hazardous waste and cannot be discharged directly. At present, the method of separation is mostly used to deal with it. Several typical methods are lime precipitation, phosphate precipitation and cryolite precipitation. Using the above treatment method to deal with the presence of hydrofluoric acid cannot be completely removed, the treatment steps are complicated, the treatment energy consumption is large, and the input of the operating cost of the enterprise is increased. Contents of the invention [0003] For the deficiencies in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B22/00C04B103/12
CPCC04B22/0006C04B40/0039C04B2103/12C04B22/002C04B22/06C04B22/165C04B22/082C04B24/122C04B22/148
Inventor 董翠平马丽涛宋宝乔琼琼彭城
Owner 萧县沃德化工科技有限公司
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