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Preparation method of sintered ore with high vanadium-titanium proportion

A sintered and proportional technology, applied in the field of metallurgy, can solve the problems of poor mechanical properties of forged steel and threaded alloy steel, difficult to meet the strain aging requirements of high-vibration threaded steel bars, etc., and achieve the effect of excellent mechanical properties.

Inactive Publication Date: 2018-12-21
SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem is that the V and Ti in the vanadium-titanium sinter prepared by the prior art methods cannot form a uniform alloy phase well, and when applied to steel processing, the prepared forged steel and threaded alloy steel have relatively poor mechanical properties. Poor, it is difficult to meet the strain aging requirements as a high-seismic threaded steel bar

Method used

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Examples

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Effect test

preparation example Construction

[0025] The embodiment of the present invention provides a method for preparing sintered ore with high vanadium-titanium ratio, comprising the following steps:

[0026] 40-50 parts by weight of Ti, 13-23 parts of V and 1-1.5 parts of MgO are mixed to prepare reaction raw materials, which also include flux and carbon particles, and the flux includes limestone, dolomite, quicklime and slaked lime at least one of;

[0027] Wetting the reaction raw materials with water to prepare pellets, wherein the mass fraction of water is 10-12%;

[0028] drying the pellets;

[0029] The dried pellets are distributed, and the material layer thickness during the distribution is 720-740mm; the pellets are then sintered under a nitrogen environment; the moving speed of the trolley during the sintering is 2-2.3m / min.

[0030] After sintering, the pellets are cooled down along with the furnace body.

[0031] The high vanadium-titanium ratio sintered ore prepared by the preparation method of the h...

Embodiment 1

[0038] The embodiment of the present invention provides a method for preparing sintered ore with high vanadium-titanium ratio, comprising the following steps:

[0039] 40 parts by weight of Ti, 23 parts of V and 1 part of MgO are mixed to prepare reaction raw materials, which also include flux and carbon particles in the reaction raw materials, and the flux includes limestone and dolomite;

[0040] Wetting the reaction raw materials with water and preparing pellets, wherein the mass fraction of water is 10%;

[0041] drying the pellets;

[0042] The dried pellets were distributed, and the thickness of the material layer was 720 mm; the pellets were then sintered under a nitrogen atmosphere; the moving speed of the trolley during the sintering was 2 m / min.

[0043] After sintering, the pellets are cooled down along with the furnace body.

Embodiment 2

[0045] The embodiment of the present invention provides a method for preparing sintered ore with high vanadium-titanium ratio, comprising the following steps:

[0046] 43 parts by weight of Ti, 20 parts of V and 1.2 parts of MgO are mixed to prepare reaction raw materials, which also include flux and carbon particles in the reaction raw materials, and the flux includes limestone and slaked lime;

[0047] Wetting the reaction raw materials with water and preparing pellets, wherein the mass fraction of water is 10%;

[0048] drying the pellets;

[0049] The dried pellets were distributed, and the material layer thickness during the distribution was 725mm; the pellets were then sintered under a nitrogen environment; the moving speed of the trolley during the sintering was 2.1 m / min.

[0050] After sintering, the pellets are cooled down along with the furnace body.

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Abstract

The invention discloses a preparation method of a sintered ore with a high vanadium-titanium proportion. The preparation method of the sintered ore with the high vanadium-titanium proportion comprisesthe following steps that 40-50 parts of Ti and 13-23 parts of V are taken by weight and mixed to prepare a reaction raw material, and the reaction raw material further comprises a fluxing agent and fuel; water is added into the reaction raw material for wetting to prepare a pellet; and the pellet is sintered in a nitrogen environment. By adjusting the proportion of V and Ti, V and Ti are mixed uniformly after being doped with the adulteration of the alkaline fluxing agent and the fuel, the nitrogenous sintered ore with the vanadium-titanium proportion reaching 63% is prepared in the nitrogenenvironment, the permeability of nitrogen is improved, and the mechanical properties of prepared forged steel and threaded alloy steel based on the high vanadium-titanium are improved.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method for preparing sintered ore with a high vanadium-titanium ratio. Background technique [0002] my country is rich in vanadium-titanium magnetite resources. With the massive development and utilization of mineral resources, the ore is becoming increasingly scarce. Facing the huge demand for ferroalloys and the reality that my country's iron ore resources are poor, fine and miscellaneous, comprehensive development and utilization of vanadium-titanium Magnetite is an inevitable trend. [0003] Vanadium-titanium alloys are mainly used in the iron and steel industry. Adding a certain amount of vanadium-titanium to steel can improve the wear resistance, strength, hardness, ductility and other properties of the steel, so that the strength of the steel structure can be increased while the weight can be reduced. [0004] The problem is that the V and Ti in the vanadium-titanium sinter pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16C22B1/24
CPCC22B1/16C22B1/2406
Inventor 向成功廖远峰张成立刘龙海杨琦鑫周文超高华斌
Owner SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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