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Rust-proofing snow-melting agent and production method thereof

A technology of snow-melting agent and anti-rust agent, applied in the field of snow-melting agent, can solve the problems of layering, reducing snow-melting effect, small particle size, etc., and achieve the effect of overcoming easy layering, uniform anti-rust effect, and strong anti-rust ability

Inactive Publication Date: 2007-12-05
WEIFANG JINGXIN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a solution, salts such as nitrates, silicates, phosphates, citrates, etc. are added to the snow-melting agent as antirust agents, such as the patent of CN1242016C, which is patented on inorganic salts. The anti-rust agent sodium metasilicate is added to the snow-melting agent. Although these anti-rust agents can inhibit the generation of metal rust, because of their small particle size, they are prone to delamination after being mixed with the snow-melting agent, which reduces the snow-melting effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Example 1, preparation of anti-rust deicing agent:

[0017] Take 990Kg of snow-melting agent sodium chloride and 10Kg of anti-rust agent sodium tartrate with a water content of 2%-5%, pour them into the mixer respectively, turn on the mixer to mix the two, and the sodium tartrate adheres during the mixing process. Coating particles are formed on the surface of sodium chloride granules. After mixing for 10 minutes, they are sent to a special dryer by a belt conveyor for drying. The drying temperature is controlled at 140°C-160°C, and the discharge speed is controlled. At 1 ton / 10 minutes, make the water content of the coated granules at the outlet of the dryer 1%, send the dried coated granules to a sieving machine for sieving, and take the coated granules with a particle size below 6mm for cooling To room temperature, the cooling method can be natural cooling or air cooling, and finally carry out metering and packaging to obtain the anti-rust snow-melting agent. Coated...

example 2

[0018] Example 2, the antirust deicing agent that example 1 makes is carried out antirust effect test by the Chinese standard of GB10124-88:

[0019] (1) First, soak two metal sheets with a hole in the middle and a hole diameter of 2 mm in a sulfuric acid solution with a concentration of 5% for 2 minutes, remove the coating, quickly wash with water → alcohol rinse → acetone rinse, and blow nitrogen to dry, then Place them in a desiccator, number, measure, and weigh them one by one;

[0020] (2) preparation solution: in two 2000 milliliter beakers, add respectively the pure water of 1000 milliliters, add 200 grams of sodium chloride in one of them beaker, in another beaker, add the antirust melting snow that example 1 makes Dosage 200 grams;

[0021] (3) hang the two metal sheets processed in step (1) in the solution in the two beakers with nylon rope respectively, the other end of the nylon rope is bound on the glass rod, and the glass rod is placed on the edge of the beaker ...

example 3

[0029] Example 3, the antirust deicing agent that example 1 makes is carried out antirust effect test by Japanese standard:

[0030] 1) First, soak two metal sheets with a hole in the middle and a hole diameter of 2 mm in a sulfuric acid solution with a concentration of 5% for 2 minutes to remove the coating, then quickly wash with water → rinse with alcohol → rinse with acetone, blow nitrogen to dry, and then put In the desiccator, number, measure and weigh one by one;

[0031] (2) preparation solution: in two 2000 milliliter beakers, add the pure water of 1000 milliliters respectively, add 30 grams of sodium chloride in one of them beaker, add the antirust melting snow that example 1 makes in another beaker dose 30 grams;

[0032] (3) hang the two metal sheets processed in step (1) in the solution in the two beakers with nylon rope respectively, the other end of the nylon rope is bound on the glass rod, and the glass rod is placed on the edge of the beaker mouth, Make the ...

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Abstract

The present invention relates to one kind of antirust snow thawing agent and its production process. The antirust snow thawing agent consists of sodium chloride with water content of 2-5 wt% and antirust agent of tartaric acid or tartrate in 0.5-10 wt% of sodium chloride, and the antirust agent adhered onto the surface of sodium chloride forms one coating. The antirust snow thawing agent is produced through mixing tartaric acid or tartrate and sodium chloride to form tartaric acid or tartrate coated sodium chloride grain, stoving the mixture at 140-160 deg.c to water content below 1 wt%, sieving and cooling. The antirust snow thawing agent has less delaminating, raised snow thawing effect, high antirust capacity to inhibiting rusting of metal, and no environmental pollution.

Description

technical field [0001] The invention relates to a deicing agent and a production method thereof, more specifically an anti-rust deicing agent and a production method thereof. Background technique [0002] In winter in cold regions, snowfall causes snow and ice to pile up on the road surface, making it difficult for vehicles to pass, and traffic accidents are prone to occur. In order to eliminate the adverse effects of snow on the road to transportation and people's lives, it is usually to throw deicing agent on the road. Among many deicing agents, inorganic salt deicing agents, including sodium chloride, magnesium chloride and / or calcium chloride, are widely used because of their rapid deicing and economical application. Metal objects such as signs, automobile chassis and steel bars in concrete are corrosive. As a solution, salts such as nitrates, silicates, phosphates, citrates, etc. are added to the snow-melting agent as antirust agents, such as the patent of CN1242016C,...

Claims

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Application Information

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IPC IPC(8): C09K3/18
Inventor 左连生步大程高家禄
Owner WEIFANG JINGXIN CHEM
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