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Environment-friendly steel rust remover and preparation method thereof

A rust remover and steel technology, applied in the field of steel rust remover, can solve the problems of long rust removal time, pollute the environment, easy to return rust, etc., and achieve the effect of small investment, uniform texture and moderate dosage

Active Publication Date: 2015-11-04
HARBIN JINSHIJIA TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention aims to solve the technical problems such as easy rust return, long rust removal time, environmental pollution and high cost in the existing iron and steel derusting; and provides an environmentally friendly iron and steel derusting agent and a preparation method thereof

Method used

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  • Environment-friendly steel rust remover and preparation method thereof

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specific Embodiment approach 1

[0021] Specific embodiment one: in this embodiment, the environment-friendly iron and steel derusting agent is made of 20% citric acid, 5% oxalic acid, 30% phosphoric acid, 1.0% sodium alkylbenzene sulfonate, 2% emulsifier NP-10, 4.5% by weight percentage % urea and the remainder of deionized water; its preparation method is completed according to the operation: first add 1 / 2 of water in the reaction kettle, and then add phosphoric acid, citric acid, oxalic acid, Sodium alkylbenzene sulfonate, corrosion inhibitor and emulsifier, then add the remaining amount of water, stir at a constant speed until completely dissolved.

[0022] The properties of the environment-friendly iron and steel derusting agent in this embodiment are as follows

[0023] Table 1

[0024] Exterior

specific Embodiment approach 2

[0025] Specific embodiment two: in this embodiment, the environment-friendly iron and steel derusting agent is made of 17% citric acid, 1% oxalic acid, 40% phosphoric acid, 1.5% sodium alkylbenzene sulfonate, 1% emulsifier AEO-9, 5.0% by weight percentage % EDTA and the remainder deionized water.

[0026] The preparation method of this embodiment is the same as that of Embodiment 1.

[0027] The properties of the environment-friendly iron and steel derusting agent in this embodiment are as follows

[0028] Table 2

[0029] Exterior

specific Embodiment approach 3

[0030] Specific embodiment three: in this embodiment, the environment-friendly iron and steel derusting agent is made of 25% citric acid, 8% oxalic acid, 20% phosphoric acid, 0.8% sodium alkylbenzene sulfonate, 3% emulsifier AEO-9, 1.0% by weight percentage % hexamethylenetetramine and the remainder deionized water.

[0031] The preparation method of this embodiment is the same as that of Embodiment 1.

[0032] The properties of the environment-friendly iron and steel derusting agent in this embodiment are as follows

[0033] table 3

[0034] Exterior

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Abstract

The invention belongs to the field of steel rust removers, and discloses an environment-friendly steel rust remover and a preparation method thereof. The environment-friendly steel rust remover and the preparation method thereof are used for solving the technical problems that an existing steel rust remover is prone to re-rusting, long in rust removal time and high in cost and pollutes the environment. The rust remover is composed of citric acid, oxalic acid, phosphoric acid, sodium alkyl benzene sulfonate, an emulsifier, a corrosion inhibitor and deionized water, or composed of citric acid, oxalic acid, phosphoric acid, sodium alkyl benzene sulfonate, an emulsifier, a corrosion inhibitor, an anti-freezing agent and deionized water. The preparation method includes the steps that 1 / 2 of water is added into a reaction still; the phosphoric acid, the citric acid, the oxalic acid, the sodium alkyl benzene sulfonate, the corrosion inhibitor and the emulsifier (or the phosphoric acid, the citric acid, the oxalic acid, the sodium alkyl benzene sulfonate, the corrosion inhibitor, the anti-freezing agent and the emulsifier) are sequentially added with stirring at the speed of 100-150 revolutions per minute; the remaining water is added; and the mixture is stirred at a constant speed till complete dissolution. The environment-friendly steel rust remover is applied to steel rust removal.

Description

technical field [0001] The invention belongs to the field of iron and steel rust remover. Background technique [0002] At this stage, my country's industry is developing rapidly, and the use of steel in various fields is increasing year by year, and the air and environmental pollution caused by the process of steel derusting are becoming more and more serious. [0003] Existing iron and steel rust removal methods include sandblasting, mechanical grinding, mechanical grinding, and rust removers. [0004] Sandblasting: Using a sandblasting machine has high cost, large investment, power consumption, noise, and the sprayed powder pollutes the air. [0005] Mechanical grinding: using electromechanical equipment, the effect of rust removal is poor, there are dead corners (there are corners that cannot be treated by the equipment), noise and pollution. [0006] Strong acid rust removal: there is acid mist, which is easy to produce smog, pollutes the air and the environment, and ...

Claims

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Application Information

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IPC IPC(8): C23G1/08C23G1/06
Inventor 佟明强
Owner HARBIN JINSHIJIA TECH DEV CO LTD
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