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Steel acid pickling accelerant not containing metal elements and application method of steel acid pickling accelerant

A steel pickling and metal element technology, which is applied in the pickling treatment of silicon steel and the field of steel pickling accelerators, can solve the problems of difficult removal of metal elements, reduction of iron powder quality, large sedimentation sludge, etc.

Active Publication Date: 2016-05-11
SUZHOU CANASTAR NEW MATERIALS TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these accelerators contain metal elements, which are not easy to remove during the iron powder recovery process of acid regeneration, which reduces the quality of iron powder
Moreover, a large amount of sedimentation sludge is generated, which is easy to block the pipeline

Method used

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  • Steel acid pickling accelerant not containing metal elements and application method of steel acid pickling accelerant
  • Steel acid pickling accelerant not containing metal elements and application method of steel acid pickling accelerant
  • Steel acid pickling accelerant not containing metal elements and application method of steel acid pickling accelerant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1 Table 1 below provides 7 formulations of steel pickling accelerators, but the formulations that can actually be used are not limited to the following, as long as they meet the content of the invention and the claims are within the scope of protection.

[0012] Table 1 steel pickling accelerator formula (by weight)

[0013]

Embodiment 2

[0014] Example 2 The following table 2 provides the usage of the pickling accelerator in the acid solution, but the actual usable range is not limited to the following, as long as it meets the content of the invention and the claims, it is the scope of protection.

[0015] The addition mode of table 2 pickling accelerator in the pickling formula (by weight percentage)

[0016]

[0017]

Embodiment 3

[0018] Example 3 Table 3 below shows the beneficial effect of adding the pickling accelerator described in Example 1.

[0019] The beneficial effect after table 3 adds pickling accelerator (all is 1% by adding amount)

[0020]

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Abstract

The invention provides an efficient steel acid pickling accelerant not containing metal elements. The steel acid pickling accelerant is composed of a reducing agent and a surface active agent. The steel acid pickling speed can be greatly increased or the acid pickling temperature can be reduced as long as a small number of accelerants are added, and therefore the purposes of improving productivity, reducing acid mist, saving energy and reducing emission are achieved.

Description

technical field [0001] The invention belongs to the field of chemical metal cleaning, and in particular relates to a steel pickling accelerator, which is mainly suitable for pickling treatment of silicon steel. Background technique [0002] A layer of oxide scale is often formed on the surface of steel after heat treatment such as rolling, quenching, annealing or other thermal processing, or a layer of oxide film will be formed when placed in the atmosphere for a period of time, and rust will be formed under the action of water and corrosive media . The main component of these oxide scales and rust is Fe 2 o 3 , Fe 3 o 4 , FeO, etc. Especially the silicon steel scale after hot rolling and heat treatment is difficult to remove by general pickling process. If these oxide scales and rust are not removed, the next step of the treatment process cannot be carried out. [0003] The methods of removing scale mainly include physical methods, chemical methods and electrochemica...

Claims

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Application Information

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IPC IPC(8): C23G1/08
CPCC23G1/08
Inventor 夏魁
Owner SUZHOU CANASTAR NEW MATERIALS TECH CORP
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