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

A method for preparing high-titanium ferroalloy by electric thermite

A ferroalloy, electro-aluminum heating technology, applied in the direction of improving process efficiency, can solve the problems of waste of mineral resources and large energy consumption, and achieve the effect of saving energy consumption cost, low cost and reducing process links

Active Publication Date: 2019-12-20
NORTHEASTERN UNIV LIAONING
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the separation process of ferro-titanium, although the high-titanium slag prepared by the electric arc furnace can recover iron, it will consume a lot of energy, and the production of titanium dioxide by the sulfuric acid method will consume a large amount of sulfuric acid due to the existence of iron oxides, resulting in a large amount of waste liquid
[0005] Therefore, these smelting methods all cause serious waste of titanium-containing mineral resources

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 1

[0036] This embodiment provides a method for preparing high-titanium ferroalloy by electric thermite, which mainly uses low-grade vanadium-titanium magnetite as raw material, together with a certain amount of titanium oxide, slagging agent, and metal aluminum particle reducing agent, in the electric furnace Heating to the beginning of the reaction, during which a reduction reaction occurs, and the valuable components iron and titanium in the raw material ore are extracted to obtain a high-titanium ferroalloy (Ti content ≥ 65%), which realizes the recovery of the valuable components in the raw material ore , and finally produce a high-value-added high-titanium ferroalloy to realize the effective utilization of resources.

[0037] The method for preparing high-titanium ferroalloy in this embodiment comprises steps:

[0038] S1: Pre-drying treatment of low-grade vanadium-titanium magnetite: Put the low-grade vanadium-titanium magnetite in an oven at 105-110°C for 4-5 hours, and t...

Embodiment 2

[0043] This example is based on Example 1, the difference is that in step S2, low-grade vanadium-titanium magnetite, titanium dioxide, calcium oxide, and metal aluminum particles are mixed uniformly according to the mass ratio of 100:485:58:260. In step S3, the heating temperature of the electric furnace is 1700°C. In this embodiment, a high-titanium ferroalloy is obtained, the main components of which are Ti: 69%, Al: 8.9%, and Fe: 13%.

Embodiment 3

[0045] This example is based on Example 1, the difference is that in step S2, low-grade vanadium-titanium magnetite, titanium dioxide, calcium oxide, and metal aluminum powder are mixed uniformly according to the mass ratio of 100:500:45:259. In step S3, the heating temperature of the electric furnace is 1680°C. In this embodiment, a high-titanium ferroalloy is obtained, the main components of which are Ti: 70%, Al: 10.2%, and Fe: 13%.

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 sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing high-titanium ferroalloy by electric thermitic heating. The method involves uniformly blending ilmenite-containing minerals with titanium dioxide, slag-forming agent and metal aluminum particles as reducing agent, and then heating and maintaining the temperature in an electric furnace. After the smelting reduction reaction, the slag is separated to obtain a high titanium ferroalloy (Ti content ≥ 65wt%). The high-titanium-iron alloy prepared by the method of the present invention using titanium-containing minerals (such as ilmenite, vanadium-titanium magnetite, etc.) as raw materials can be exported as high value-added products or used as raw materials to enter subsequent production. Compared with the out-of-furnace thermite method, electric heating has lower production costs, does not require the use of heat-generating agents such as potassium chlorate, reduces flue gas treatment costs, and reduces the production of alumina. Therefore, it can reduce the consumption of metal aluminum and the amount of waste slag and slag components. Relatively simple, it is conducive to further utilization, such as being used as refractory materials.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of mineral resources, and in particular relates to a method for preparing high-titanium ferroalloy by electric thermite. Background technique [0002] As an important metal material, titanium-iron alloy has important applications in industry. In terms of steel, titanium-iron alloys can be used as deoxidizers, degassers and alloying agents to reduce segregation of steel ingots and improve the strength and wear resistance of steel. In addition, in chemical industry and energy, it is also an important electrode coating and hydrogen storage material. At present, the production processes of ferro-titanium alloy mainly include remelting method, carbothermal method and aluminothermic method. [0003] The remelting method mainly uses metal iron and metal titanium as raw materials, high-temperature melting, and recasting to obtain the titanium-iron alloy with the required titanium conte...

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): C22B4/06C22C14/00
CPCC22B4/06C22C14/00Y02P10/20
Inventor 薛向欣高子先杨合程功金黄壮宋翰林
Owner NORTHEASTERN UNIV LIAONING
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