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Method for preparing high-grade metallic iron and titanium-rich slag with titanium concentrate as raw material

A high-grade titanium concentrate technology, applied in furnaces, furnace types, fluidized bed furnaces, etc., to achieve the effects of small investment scale, shortened smelting time, and quick results

Active Publication Date: 2013-07-17
辽宁博联特节能环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some steels are stronger than titanium alloys, the specific strength (ratio of tensile strength to density) of titanium alloys exceeds that of high-quality steel

Method used

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  • Method for preparing high-grade metallic iron and titanium-rich slag with titanium concentrate as raw material
  • Method for preparing high-grade metallic iron and titanium-rich slag with titanium concentrate as raw material
  • Method for preparing high-grade metallic iron and titanium-rich slag with titanium concentrate as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The tunnel kiln is used as the main equipment in the reduction process, and titanium concentrate powder is used as raw material to produce high-grade metal iron powder and titanium-rich slag through reduction and separation:

[0031] 1) The proposed index of the product obtained after reduction:

[0032] ① Metal iron powder products:

[0033]

[0034] ②Titanium-rich slag products:

[0035]

[0036] 2) Production process

[0037] (1) Selection of raw materials:

[0038] The main composition indicators of the reduced material titanium concentrate are as follows: TFe=33.27%, TiO 2 =47.56%; the particle size ≤ -200 reached 92%.

[0039] Iron scale index: TFe=71.8%, particle size: 91% below -200 mesh.

[0040] Bituminous coal powder: C=84.54%, ash=4.77%, volatile matter=10.69%, particle size≤-160 mesh.

[0041] Auxiliary (industrial product): Glauber's salt: Na 2 SO 4 , Soda ash: Na 2 CO 3 1. Industrial salt: NaCl, ground into -160 mesh powder.

[0042] (2) ...

Embodiment 2

[0052] BLT-I reduction kiln is used as the main equipment in the reduction process, and titanium concentrate powder is used as raw material to produce high-grade metal iron powder and titanium-rich slag through reduction and separation:

[0053] 1) The proposed index of the product obtained after reduction:

[0054] ① Metal iron powder products:

[0055]

[0056] ②Titanium-rich slag products:

[0057]

[0058] 2) Production process

[0059] (1) Selection of raw materials

[0060] The main composition indicators of the reduced material titanium concentrate are as follows: TFe=32.17%, TiO 2 =47.46%; the particle size ≤ -200 aims to reach 93%.

[0061] Iron scale index: TFe=71.5%, particle size: 91% below -200 mesh.

[0062] Bituminous coal powder: C=84.92%, ash=4.57%, volatile matter=10.51%, particle size≤-160 mesh.

[0063] Auxiliary (industrial product): Glauber's salt: Na 2 SO 4 , Soda ash: Na 2 CO 3 1. Industrial salt: NaCl, ground into -160 mesh powder.

[...

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Abstract

The invention relates to a method for preparing high-grade metallic iron and titanium-rich slag by reduction and separation of titanium concentrate as a raw material. In the method, the titanium concentrate is used as a main raw material, and a tunnel furnace, a rotary hearth furnace, a BLT-reduction kiln and the like are used as production equipment. The method is characterized by comprising thesteps of: mixing titanium concentrate raw ore with TFe content of 30-35% and TiO2 content of 45-50% with iron scale with TFe content not less than 71.5% until the TFe content is 40-45%, then adding coal dust, water, an adhesive and an auxiliary agent composed of mirabilite, sodium carbonate and industrial salt according to a ratio, mixing and granulating, and carrying out high-temperature reduction to prepare the metallic iron and titanium rich slag. The prepared metallic iron has TFe content not less than 88% and TiO2 content not more than 6%; and the generated titanium rich slag has TiO2 content not less than 72% and TFe content not more than 6%.

Description

technical field [0001] The invention relates to a method for preparing high-grade metallic iron and titanium-rich slag by reducing and separating titanium concentrate powder or vanadium-titanium-magnetite powder as raw materials. Background technique [0002] Ferro-titanium symbiotic ores, including vanadium-titanium magnetite or titanium concentrate, are relatively rich in reserves, but their mining and utilization have always been a major problem in the metallurgical field. Through the unremitting efforts of scientific researchers, since the 1970s, blast furnaces have been used to smelt vanadium There have been obvious breakthroughs in titano-magnetite technology, which has enabled this kind of mineral deposits to be utilized to a certain extent, but in terms of resource conservation, there are still certain deficiencies. This is TiO in the mineral 2 It has not been fully extracted, and it is particularly proposed that the titanium concentrate with high titanium content o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B13/00
Inventor 陶立群唐竹胜
Owner 辽宁博联特节能环保技术有限公司
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