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

Slag-iron separation promoter as well as preparation method and use method thereof

A technology of slag-iron separation and accelerator, applied in the field of titanium slag smelting, can solve problems such as difficulty in measuring the thickness of slag-iron layer, affecting the quality of titanium slag, safe operation of smelting economic indicators electric furnace, threatening the safety of furnace lining and related equipment, etc., to achieve improvement Surface tension of slag and iron, shortening the separation time of slag and iron, and improving the effect of interfacial tension conditions

Inactive Publication Date: 2020-08-28
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the separation speed of slag and iron is too slow, it will often lead to iron inclusion in slag, high power consumption in smelting, and increase in temperature of molten iron, which will affect the quality of titanium slag, economic indicators of smelting and safe operation of electric furnace
[0003] At present, titanium slag smelting enterprises at home and abroad improve the separation degree of slag and iron by controlling the superheating degree of molten pool, superheating time, and the thickness of slag and iron layer in the production process, so as to reduce the iron inclusion in slag. These methods are all to maintain slag, The physical separation method adopted on the basis of the existing iron composition conditions, in the production process, if the superheating degree and superheating time are insufficient, it will easily lead to iron inclusion in the slag, threatening the safety of slag discharge; The temperature of slag and iron increases, which threatens the safety of furnace lining and related equipment; the thickness of slag and iron layer is difficult to measure and thus difficult to control accurately

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
  • Slag-iron separation promoter as well as preparation method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The preparation method of slag-iron separation accelerator of the present invention comprises the following steps:

[0020] ①Using the by-product iron pellets or iron wires and other iron waste produced during the crushing process of titanium slag as the basic raw material, after ball milling, iron powder with a particle size of ≤0.3mm and a proportion of more than 95% is obtained, and its metallic iron content is more than 90%, and its C content 1~3%;

[0021] ② Coke powder is obtained by ball milling dust-removing ash or massive coke produced by coking, with C content > 80%, volatile matter < 5%, ash content < 20%, and particle size < 1 mm, accounting for more than 90%;

[0022] ③MgO content > 90% magnesium oxide powder and solid organic binder;

[0023] ④According to the mass percentage, mix iron powder 70-90%, coke powder 5-15%, magnesium oxide powder 2-8%, binder 1-5%, water 1-5%, and use a mixing machine Thoroughly stir and mix for 10 to 30 minutes to obtain Mix...

Embodiment 1

[0030] According to mass percentage, the ratio of iron powder 80%, coke powder 10%, magnesium oxide powder 5%, binder 3%, water 2% was mixed for 15 minutes using a mixer to prepare the mixture A. Among them: "iron powder" uses the by-product iron particles produced by the titanium slag crushing process as the basic raw material, which is obtained after ball milling, with a particle size of ≤0.3mm greater than 95%, a metal iron content of 95%, and a C content of 1.5%; "coke powder" uses coking The produced dust has a C content of 82%, a volatile content of 3%, ash content of 15%, and a particle size of less than 1mm greater than 90%. Magnesium oxide powder with a MgO content of 92% and a solid organic binder are used. The mixture A is pressed into a pellet B by using a double-roller briquetting machine, and the pellet C is obtained after drying as a slag-iron separation accelerator. Among them, the pressure of the briquetting machine is controlled at 15MPa, the particle size of...

Embodiment 2

[0033] According to the mass percentage, the ratio of iron powder 85%, coke powder 5%, magnesium oxide powder 6%, binder 2%, water 2% was mixed for 15 minutes using a mixer to prepare the mixture A. Among them: "iron powder" uses the by-product iron particles produced by the titanium slag crushing process as the basic raw material, which is obtained after ball milling, with a particle size of ≤0.3mm greater than 95%, a metal iron content of 95%, and a C content of 1.5%; "coke powder" uses coking The produced dust has a C content of 82%, a volatile content of 3%, ash content of 15%, and a particle size of less than 1mm greater than 90%. Magnesium oxide powder with a MgO content of 92% and a solid organic binder are used. The mixture A is pressed into a pellet B by using a double-roller briquetting machine, and the pellet C is obtained after drying as a slag-iron separation accelerator. Among them, the pressure of the briquette machine is controlled at 18MPa, the particle size o...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of titanium slag smelting, and particularly relates to a slag-iron separation promoter as well as a preparation method and a use method of the slag-iron separation promoter. The slag-iron separation promoter is prepared from the following components in percentage by mass: 70-90 % of iron powder, 5-15 % of coke powder, 2-8 % of magnesium oxide powder, 1-5 % of a binder, and 1-5 % of water. The slag-iron separation promoter is used for slag-iron separation in the titanium slag smelting process, the slag-iron separation time can be effectively shortened, the iron inclusion proportion in slag can be reduced, and the tapping temperature can be reduced.

Description

technical field [0001] The invention belongs to the technical field of titanium slag smelting, and in particular relates to a material for accelerating the separation of slag and iron in the titanium slag smelting process, a preparation method and a use method thereof, which can effectively promote the separation of slag and iron, and are applicable to various titanium slag smelting processes. Background technique [0002] During the smelting process of titanium slag, titanium concentrate and reducing agent react in the electric furnace to produce metal molten iron and slag, and realize the separation of slag and iron under the action of gravity, and then obtain titanium slag and molten iron. If the separation speed of slag and iron is too slow, it will often lead to iron inclusion in slag, high power consumption in smelting, and increase in temperature of molten iron, which will affect the quality of titanium slag, economic indicators of smelting and safe operation of electr...

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 Applications(China)
IPC IPC(8): C21C7/00C21B3/06C22C38/00C22B1/24
CPCC21B3/06C21C7/0006C22B1/2406C22C38/002C21B2400/02Y02W30/50Y02P10/20
Inventor 肖军宋兵李凯茂
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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