Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of metal element-free iron and steel pickling accelerator and its application method

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

Active Publication Date: 2018-06-15
SUZHOU CANASTAR NEW MATERIALS TECH CORP
View PDF2 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of metal element-free iron and steel pickling accelerator and its application method
  • A kind of metal element-free iron and steel pickling accelerator and its application method
  • A kind of metal element-free iron and steel pickling accelerator and its application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1 The following table 1 provides the formulations of 7 steel pickling accelerators, but the actual formulations that can be used are not limited to the following, as long as they meet the content of the invention and the claims, they are all 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]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C11D1/94
CPCC23G1/08
Inventor 夏魁
Owner SUZHOU CANASTAR NEW MATERIALS TECH CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com