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A kind of preparation method of chemical sand-fixing agent

A sand-fixing agent and chemical technology, which is applied in the field of chemical sand-fixing agent preparation, can solve problems such as environmental pollution, high cost, and long process time, and achieve the effects of reducing cost, reducing process production time, and reducing pollution

Inactive Publication Date: 2017-02-01
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process takes too long, some drugs such as dibutyl phthalate will pollute the environment, and the sand crust formed after spraying the sand with the experimental product is not strong enough and the cost is relatively high, so it is actually not applicable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1 The preparation steps of chemical sand-fixing agent are as follows:

[0017] (1) Heat 5g of polyvinyl alcohol powder and 95g of water to 80°C for 30 minutes to completely dissolve the polyvinyl alcohol and prepare 5wt% polyvinyl alcohol;

[0018] (2) Dissolve 5g of polyacrylamide in 95g of warm water at 40°C, drop it into (1) through a burette (control the titration speed, titrate slowly), keep the temperature at 75°C, and stir for 20 minutes;

[0019] (3) Take 33ml of silica sol and drop it into (2) through a burette (control the titration speed, titrate slowly), keep the temperature at 75°C, and stir for 20 minutes;

[0020] (4) Dissolve 3-4g of nano-scale calcium carbonate solid in 96-97g of water (3%-4% nano-scale calcium carbonate dispersion), and slowly drop into (3) through the burette (control the titration speed, slow titration), Constant temperature 75°C, stirring for 20 minutes;

[0021] (5) Add 5g of sodium tetraborate directly to the above mixtu...

Embodiment 2

[0023] Example 2 The preparation steps of chemical sand-fixing agent are as follows:

[0024] (1) Mix 8g of polyvinyl alcohol powder with 92g of water, heat to 80°C for 30 minutes to completely dissolve the polyvinyl alcohol, and prepare 8wt% polyvinyl alcohol;

[0025] (2) Dissolve 8g of polyacrylamide in 92g of warm water at 41°C, slowly add the above mixture (control the titration speed, titrate slowly), keep the temperature at 78°C, and stir for 25 minutes;

[0026] (3) Take 32ml of silica sol and slowly add it to (2) (control the titration speed, titrate slowly), keep the temperature at 78°C, and stir for 25 minutes;

[0027] (4) Dissolve 3-4g of nano-scale calcium carbonate solid in 96-97g of water (3%-4% nano-scale calcium carbonate dispersion), and slowly add to (3) (control titration speed, slow titration), constant temperature 78 ℃, stirring for 25 minutes;

[0028] (5) Add 8g of sodium tetraborate directly into (4), keep the temperature at 78°C, and stir for 24 mi...

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PUM

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Abstract

The invention discloses a preparation method of a chemical sand-fixing agent belonging to the technical field of chemical material preparation. Dissolve a certain amount of polyvinyl alcohol, then add polyacrylamide, silica sol, nanoscale calcium carbonate, and ammonium tetraborate in sequence, stir at a constant speed of 70-80°C for about 20-30 minutes, and then lower to room temperature. Get the product. The chemical sand-fixing agent of the present invention forms a network-like coating film to coat the sand grains to form a sand crust. It shortens the production time, reduces the cost and reduces the pollution to the environment.

Description

technical field [0001] The invention belongs to the technical field of chemical material preparation, in particular to a preparation method of a chemical sand-fixing agent. Background technique [0002] Since 1949, Chinese researchers have developed more than 100 desertification control technologies and control models represented by relatively mature engineering sand fixation and biological sand fixation after continuous exploration. However, these sand fixation methods have problems such as large manpower consumption, slow construction, high cost, and low benefit, so that they cannot be widely promoted and implemented. However, chemical sand-fixing technology and new chemical sand-fixing materials have attracted increasing attention in the sand-fixing market because of their low cost, convenience, speed, and high efficiency. In the 1960s, the research and experiment of chemical sand fixation appeared in our country, and achieved certain results. [0003] The research on c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C09K17/52C09K105/00
CPCC09K17/40C09K17/52C09K2105/00
Inventor 王海旺高彤宇黄雅迪张江山金晨
Owner NORTHEASTERN UNIV LIAONING