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

Method for preparing low-temperature titanium chloride slag from low-grade titanium concentrate

A low-grade titanium and titanium chloride technology, applied in the fields of environmental protection, energy saving, and metallurgy, can solve problems such as secondary pollution, and the proportion of carbon, nitrogen, and oxygen cannot be accurately controlled, so as to save energy consumption, facilitate magnetic separation, and broaden the market The effect of applying the foreground

Active Publication Date: 2021-07-09
CHONGQING UNIV
View PDF15 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above method can well utilize titanium carbonitride low temperature chlorination to prepare TiCl 4 , but there is a problem that the prepared TiC x N y o z 、 TiC x N y 、 TiC x o z The ratio of carbon, nitrogen and oxygen content cannot be precisely controlled. If the carbon content is high, carbon- and chlorine-containing slag will be produced after the chlorination reaction, which will affect the reaction and cause secondary pollution.

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
  • Method for preparing low-temperature titanium chloride slag from low-grade titanium concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In the existing low-quality titanium essence of phening, the main chemical composition is shown in Table 1.

[0033] Table 1 Main chemical composition of titanium concentrate

[0034] TIO 2

S Feo FE 2 O 3

SiO 2

Cao MGO 47.53 0.18 36.33 5.33 2.53 0.765 3.58

[0035] This embodiment uses the method of the present invention, and the specific steps are as follows:

[0036] Work with 100 parts by weight of titanium precision to 0.074 mm or less, with 10 parts by weight of NASO 4 Uniformly mixed with 0.2 parts by weight of methylcellulose binder, pressed with a mold having a diameter of 10 mm to prepare a ball.

[0037] Put the ball in a high temperature tubular reaction furnace, the pre-oxidation temperature is 1000 ° C, heat insulation for 1 h, and then introduced into the air in the cooker, then access NH at 1000 ° C. 3 -H 2 Restore the nitridation process, in NH 3 -H 2 Insulation for 3h. Among them, the volume fraction of ammonia gas and ...

Embodiment 2

[0040] In this example, the method of the present invention is prepared by the preparation of low-temperature chloride slag for the preparation of the low-quality titanium precision as described in Example 1. The specific steps are as follows:

[0041] Work with 100 parts by weight of titanium precision to 0.074 mm or less, with 10 parts by weight of NASO 4 Uniform mixed with 0.2 parts by weight of methylcellulose binder, pressed with a mold having a diameter of 5 mm to prepare a ball.

[0042] The ball is pre-oxidized in a high temperature tubular reaction furnace, the pre-oxidation temperature is 1000 ° C, holding the temperature of 2 h, then passing into argon to remove air in the cooker, then access NH at 1100 ° C. 3 -H 2 Restore the nitridation process, in NH 3 -H 2 Insulation for 8 h. Among them, the volume fraction of ammonia gas and hydrogen is 50%.

[0043] The high temperature tubular reactor is cooled to room temperature, and the reaction after the reaction is removed, ...

Embodiment 3

[0045] In this example, the method of the present invention is prepared by the preparation of low-temperature chloride slag for the preparation of the low-quality titanium precision as described in Example 1. The specific steps are as follows:

[0046] Work with 100 parts by weight of titanium precision to 0.074 mm or less, with 10 parts by weight of NASO 4 Uniformly mixed with 0.2 parts by weight of methylcellulose binder, pressed with a mold having a diameter of 10 mm to prepare a ball.

[0047] Place the ball in a high temperature tubular reaction furnace, which is then passed into argon to remove the air in the cooker, then pass at 900 ° C to NH. 3 -H 2 Restore the nitridation process, in NH 3 -H 2 Insulation 1H. Among them, the volume fraction of ammonia gas and hydrogen is 50%.

[0048] The high temperature tubular reactor is cooled to room temperature, and the reaction after the reaction is removed, then the ball mill is broken to 0.074 mm or less, and the magnetic separati...

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 method for preparing low-temperature titanium chloride slag by using low-grade titanium concentrate. The method is characterized in that one or more of NH3-N2, NH3-H2 and NH3-H2-N2 are used as roasting gases, and the low-grade titanium concentrate is subjected to the steps of ball milling pelletizing or briquetting, pre-oxidation, reduction nitridation, crushing ball milling and magnetic separation to effectively separate metal iron and the low-temperature titanium chloride slag. Compared with titanium carbonitride, the prepared low-temperature titanium chloride slag releases less heat in the chlorination reaction, is not easy to cake, is beneficial to the reaction, does not contain carbon, has no strict requirement on the nitrogen-oxygen content ratio of TiNyOz, and does not generate carbon-containing chlorination slag.

Description

Technical field [0001] The present invention belongs to the field of metallurgical technology and the field of environmentally friendly energy-saving technology, mainly involving a method of preparing low-temperature titanium chloride residue in low-titanium precision. [0002] technical background [0003] At present, my country's titanium resources are rich, mainly distributed in Panxi, with titanium resources account for more than 90% of the national titanium resources. Among them, titanium-containing resources are mainly titanium iron ore in vanadium iron magnetite and titanium precision. The vanadium iron magnetite has achieved some results in the use of ceramics, cement mixes, silicon-titanium complex alloys, rutile, titanium titanium liquor, etc. The titanium concentrate is mainly raw material for the production of titanium powder and sponge titanium, wherein the proportion of titanium white powder is more than 90%, and the production process of titanium white powder is div...

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): C22B1/02C22B34/12B03C1/015
CPCC22B1/02C22B34/1209B03C1/015Y02P10/20
Inventor 游志雄刘勇杰邱贵宝吕学伟胡青青王月周航航马东来赵剑波张生富党杰余文轴胡丽文辛云涛
Owner CHONGQING UNIV
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