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A method for enriching metal titanium from titanium-containing blast furnace slag

A blast furnace slag and metal titanium technology, applied in the direction of improving process efficiency, can solve the problems of reduced recovery rate, incomplete enrichment, and low enrichment phase, and achieve the effects of low cost, improved enrichment capacity, and simple process

Active Publication Date: 2022-05-13
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process enriches titanium carbonitride on the iron oxide carrier, which is prone to incomplete enrichment, which leads to the enrichment phase obtained by magnetic separation is lower than the theoretical value, reducing the recovery rate

Method used

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  • A method for enriching metal titanium from titanium-containing blast furnace slag
  • A method for enriching metal titanium from titanium-containing blast furnace slag
  • A method for enriching metal titanium from titanium-containing blast furnace slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] First, the titanium-containing blast furnace slag is ball-milled to a particle size below 0.074 mm, and then the ball-milled titanium-containing blast furnace slag is mixed with Fe 2 o 3 Mix with carbon powder at a molar ratio of 3:1:0.75, then add distilled water to make pellets with a diameter of 6-8mm;

[0033] Then the pellets were dried in an oven at 60°C for 6 hours, and then the dried pellets were placed in a tube furnace and fed with high-purity argon. The flow rate of argon was controlled at 200mL / min. The furnace is heated up to obtain a blast furnace slag containing a magnetic titanium-enriched phase, wherein the heating procedure is as follows:

[0034] Rise to 200°C at a heating rate of 10°C / min; then rise to 800°C at a heating rate of 5°C / min, and hold for 30 minutes; finally rise to 1000°C (calcination temperature) at a heating rate of 3°C / min, Roasting for 3h;

[0035] Cool the blast furnace slag obtained after high-temperature roasting to 50°C at a c...

Embodiment 2～3

[0037] Referring to the method for preparing the titanium-rich phase in Example 1, only the calcination temperature was changed to 1200° C. and 1400° C., and other conditions remained unchanged.

Embodiment 4～6

[0049] With reference to the method for preparing the titanium-rich phase in Example 3, the titanium-containing blast furnace slag and Fe 2 o 3 And the molar ratio of toner is adjusted to 4:1:0.75, 5:1:0.75, 7:1:0.75 respectively, and other conditions remain unchanged.

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Abstract

The invention provides a method for enriching metal titanium from titanium-containing blast furnace slag, which belongs to the technical field of blast furnace slag recovery. In the present invention, the titanium-containing blast furnace slag is pulverized and then added with nano-iron oxide and carbon powder to make pellets with a diameter of 6-8mm, and the pellets are roasted in an inert atmosphere to form a magnetic powder containing Fe-Ti-O. The blast furnace slag of the titanium-rich phase is finally subjected to magnetic separation to obtain the rich phase. The invention can realize the enrichment of titanium at relatively low temperature, further has the advantages of low energy consumption, less pollution and simple process, can not only realize the recycling and utilization of titanium resources, but also reduce the impact of the stockpiling of titanium-containing blast furnace slag on the environment .

Description

technical field [0001] The invention relates to the technical field of blast furnace slag recovery, in particular to a method for enriching metallic titanium from titanium-containing blast furnace slag. Background technique [0002] Metal titanium has the characteristics of high temperature resistance, corrosion resistance, high specific strength and non-toxicity, so it is widely used in aerospace, marine resource development, chemical and medical equipment and other fields. my country has a large amount of titanium resources, most of which exist in the form of titano-magnetite and ilmenite, among which titano-magnetite reserves are the largest. In the process of ironmaking, a large amount of titanium enters together with iron concentrate sintering. The blast furnace finally forms titanium-containing blast furnace slag, which can account for 50% of the total titanium resources in my country. Therefore, titanium extraction through titanium-containing blast furnace slag is an i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/04C22B1/24C22B1/02C22B34/12
CPCC22B7/04C22B1/24C22B1/02C22B34/1209Y02P10/20
Inventor 闫柏军李有余
Owner UNIV OF SCI & TECH BEIJING