Compound desulfurizing agent for melted iron blowing desulfurization and preparation method for compound desulfurizing agent

A technology of desulfurizer and molten iron, which is applied in the field of iron and steel metallurgical auxiliary materials, can solve the problems of low utilization rate and high desulfurization cost of molten iron, and achieve the effects of increasing utilization rate, realizing green operation, and improving desulfurization efficiency

Inactive Publication Date: 2017-10-24
SHANGHAI MEISHAN IRON & STEEL CO LTD
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a composite desulfurizer for molten iron injection desulfurization and its preparation method, which mainly solves the technical problems of low utilization rate of magnesium powder desulfurizer for molten iron injection desulfurization and high cost of molten iron desulfurization in the prior art

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further illustrated below in conjunction with specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0020] A composite desulfurizer for molten iron injection desulfurization, the weight percent of which is composed of: passivated magnesium powder 80-90%, metal aluminum 1-8%, aluminum oxide 2-10%, and the rest are unavoidable impurities . Table 1 is the components (by weight percentage) of the examples of the present invention, and the balance is unavoidable impurities.

[0021] Table 1 Components of the examples of the present invention, unit: weight percent.

[0022] category

[0023] By using the composite desulfurizer of the embodiment of the present invention, the utilization rate of the passivated magnesium powder is increased by more than 5% on average, and the effect is r...

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 discloses a compound desulfurizing agent for melted iron blowing desulfurization and a preparation method for the compound desulfurizing agent. The technical problems of the low utilizing ratio of a magnesium powder desulfurizing agent for melted iron blowing desulfurization and high cost of melted iron desulfurization in the prior art are mainly solved. According to the technical scheme, the compound desulfurizing agent for melted iron blowing desulfurization comprises, by weight, 80%-90% of passivation magnesium powder, 1%-8% of metallic aluminum, 2%-10% of aluminum oxide, and the balance unavoidable impurities. According to the compound desulfurizing agent for melted iron blowing desulfurization, the utilizing ratio of the passivation magnesium powder is increased by 5% or above averagely, and the cost of melted iron desulfurization is reduced; aluminum composition in the raw material of the compound desulfurizing agent for melted iron blowing desulfurization adopts the metallic aluminum and the aluminum oxide in industrial aluminum ash, production cost of the compound desulfurizing agent is significantly reduced, meanwhile, wasted materials like the industrial aluminum ash is used again, and green operation is achieved.

Description

technical field [0001] The invention relates to a desulfurizer for molten iron desulfurization, in particular to a composite desulfurizer for molten iron injection desulfurization and a preparation method thereof, belonging to the technical field of iron and steel metallurgical auxiliary materials. Background technique [0002] Normally, sulfur is a harmful element in steel, which can cause hot embrittlement of steel. Different steel products have different requirements for sulfur content due to different uses and processing methods, but when the sulfur content exceeds the standard, desulfurization must be carried out. In steelmaking production, desulfurization methods are divided into molten iron desulfurization, smelting desulfurization and refining desulfurization. Desulfurization of molten iron can reduce the burden of smelting desulfurization and refining desulfurization, and desulfurization as soon as possible can remove desulfurization products from steel products as...

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
IPC IPC(8): C21C1/02C21C7/064
CPCC21C1/025C21C7/0645
Inventor 张才贵胡建光邓丽琴徐冬梅
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap