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A kind of method for preparing ferro-titanium alloy powder from sintered ore

A technology of ferrotitanium alloy and sinter, which is applied in the field of ferrotitanium alloy smelting, can solve the problems of high price, low metal yield and high cost, and achieve the effects of high productivity, excellent performance and low energy consumption

Inactive Publication Date: 2020-02-07
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the yield of metal produced by the thermite method is low, and titanium often exists in the form of oxides; the main raw material of the remelting method is titanium sponge, which is limited by the source and expensive, and the production process requires vacuuming, which is very expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing titanium-iron alloy powder from sintered ore. The specific steps are as follows: (a) crushing sintered raw materials to a particle size of 5 mm, and then uniformly mixing the crushed sintered raw materials and returned ore at a mass ratio of 2:1 to obtain a mixed material. Wherein, the sintering raw material is composed of titanium-containing magnetite powder, titanium concentrate powder, silica and reducing agent. Based on the total weight of the sintering raw materials, the content of the titanium-containing magnetite powder is 70wt%, the content of the titanium concentrate powder is 15wt%, the content of the silica is 10wt%, and the content of the fuel The content is 5wt%. (b) Heating the obtained mixed material to 500° C. for 20 minutes, and then heating to 1200° C. for 3 hours to obtain ilmenite sinter. (c) Cool the ilmenite sintered ore to room temperature and then grind the ore. After grinding, the fineness is less than 200 mesh, accountin...

Embodiment 2

[0020] A method for preparing titanium-iron alloy powder from sintered ore, the specific steps are as follows: (a) crush sintered raw materials to a particle size of 15 mm, and then uniformly mix the crushed sintered raw materials and returned ore at a mass ratio of 3:1 to obtain a mixed material. Wherein, the sintering raw material is composed of titanium-containing magnetite powder, titanium concentrate powder, silica and reducing agent. Based on the total weight of the sintering raw materials, the content of the titanium-containing magnetite powder is 80wt%, the content of the titanium concentrate powder is 10wt%, the content of the silica is 5wt%, and the content of the fuel The content is 5wt%. (b) Preheat the obtained mixed material to 600°C for 30 minutes, then heat to 1150°C and roast for 5 hours to obtain ilmenite sintered ore. (c) Cool the ilmenite sintered ore to room temperature and then grind the ore. After grinding, the fineness is less than 200 mesh, accounting...

Embodiment 3

[0022] A method for preparing titanium-iron alloy powder from sintered ore. The specific steps are as follows: (a) crushing sintered raw materials to a particle size of 30mm, and then uniformly mixing the crushed sintered raw materials and returned ore at a mass ratio of 4:1 to obtain a mixed material. Wherein, the sintering raw material is composed of titanium-containing magnetite powder, titanium concentrate powder, silica and reducing agent. Based on the total weight of the sintering raw material, the content of the titanium-containing magnetite powder is 75wt%, the content of the titanium concentrate powder is 10wt%, the content of the silica is 10wt%, and the content of the fuel The content is 5wt%. (b) Heating the obtained mixed material to 550° C. for 25 minutes, and then heating to 1200° C. for 4 hours to obtain ilmenite sinter. (c) Cool the ilmenite sintered ore to room temperature and then grind the ore. After grinding, the fineness is less than 200 mesh, accounting...

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Abstract

The invention relates to a method for preparing ferrotitanium powder from sintered ores. By adjustment of component proportions of sintering raw materials and sintering condition improvement, carbonates in ores can be decomposed thoroughly, thoroughness in reduction of metallic oxides is realized, obtained ferrotitanium sintered ores are excellent in performance, low energy consumption and high productivity in a ferrotitanium powder preparation process are realized, high social, environmental and economical benefits are achieved, and obtained ferrotitanium powder is low in impurity content anduniform in component.

Description

technical field [0001] The invention relates to the technical field of ferro-titanium alloy smelting, in particular to a method for preparing ferro-titanium alloy powder from sintered ore. Background technique [0002] In the modern iron and steel industry, ferro-titanium alloys are used more and more widely, and are often added to the alloy to achieve the purpose of degassing, deoxidizing and adjusting the composition of the alloy. Especially in the smelting of iron-based superalloys and high-quality stainless steel, high-titanium ferroalloys play an irreplaceable role. Ferro-titanium alloys are mainly divided into three categories according to the different titanium content: low-titanium ferroalloy (25%-35% titanium content), medium-titanium ferroalloy (35%-45% titanium content), high-titanium ferroalloy (titanium-containing Amount of 65% to 75%). When the titanium content is about 70%, this ferro-titanium alloy has a lower melting point (about 1100°C), which is about 57...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/20C22B34/12C22B5/10
CPCB22F9/20C22B5/10C22B34/1218
Inventor 马晋遥张跃飞赵兰
Owner BEIJING UNIV OF TECH
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