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

A kind of magnesia-calcium carbon ball is used in the technology of lf steelmaking

A technology of carbon spheres and process, which is applied in the field of LF steelmaking process and magnesia-calcium carbon spheres, can solve the problems of high cost and achieve the effects of low cost, reduced dependence, convenient transportation and warehouse management

Active Publication Date: 2017-06-30
XINJIANG ZHONGHE DAZHENG COMMERCE & TRADE
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to these documents, it can be seen that the application of calcium carbide in steelmaking has high cost and many negative effects

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

[0016] The invention will be further described below in conjunction with the embodiment of producing 5 tons of dolomite carbon spheres. A kind of magnesia-calcium carbon ball is used in the technology of LF steelmaking, selects Xinjiang local dolomite (in which CaMg (CO 3 ) 2 content is 98%), the carbon content is: 98%×24 (atomic weight of magnesium) ÷ 167 (molecular weight of dolomite)=14%, the carbon content of local graphite powder is 90%;

[0017] 1) According to the previous calculation, purchase 2.04 tons of graphite powder and 2.96 tons of dolomite and transport them to the production area for use.

[0018] 2) Put the two kinds of raw materials into the crusher and crush them first, then grind them to less than 1mm in the middle of the Raymond mill, mix them evenly, add them to a high-pressure ball press machine, press them into balls, and then transport them to the LF refining furnace bit to be used.

[0019] When smelting aluminum-killed steel in the converter, the...

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 process of using magnesia-calcium-carbon balls in LF (ladle furnace) steel making. The process comprises the steps that dolomite and graphite carbon are uniformly mixed, then crushed, and pulverized till the particle size is below 1mm; the pulverized dolomite and graphite carbon are then put into a ball pressing machine to allow carbon, and calcium carbonate and magnesium carbonate that are in dolomite to be pressed together to form a homogeneous body of carbonate and carbon; and the homogeneous body is made into deoxidant carbon balls capable of replacing calcium carbide. Computational formulas of adding amounts of carbon and dolomite are as follows: (1) the content of carbon is controlled at 45%, the content of carbon in dolomite is assumed to be alpha, the content of carbon in graphite is assumed to beta, the adding amount of graphite is Q, then the computational formula of the adding amount (Q) of graphite is as follows: Q is equal to (45-100alpha) / (beta-alpha); and (2) the adding amount (G) of dolomite is controlled in accordance with 100-Q. When aluminium killed steel is smelted in a rotary furnace, according to the principle of replacing calcium carbide at the equal adding amount, the above deoxidant carbon balls are added, and are used according to the traditional steel melting process.

Description

technical field [0001] The invention relates to the application process of using magnesia-calcium carbon balls instead of calcium carbide in the refining process in the steelmaking process, in particular to a process for using magnesia-calcium carbon spheres in LF steelmaking. Background technique [0002] In the steelmaking process, the use of calcium carbide for steelmaking is mainly to use the calcium carbide in it to decompose, and the carbon in it reacts with the oxygen or oxide in the molten steel or steel slag to reduce the oxygen content in the molten steel or steel slag. While calcium carbide deoxidizes, the deoxidized products are CO and CaO. When deoxidizing molten steel, it does not pollute molten steel, and when deoxidizing steel slag, it does not reduce the alkalinity of steel slag. [0003] However, the calcium carbide used in steelmaking is prone to moisture and deterioration during transportation and storage, which will have a negative impact. In addition, c...

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): C21C7/06
Inventor 吴汉元
Owner XINJIANG ZHONGHE DAZHENG COMMERCE & TRADE
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