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Sintering mixture and vanadium-titanium sinter as well as preparation method of vanadium-titanium sinter

A technology of sintering mixture and vanadium-titanium iron concentrate, which is applied in the field of sintering mixture, vanadium-titanium sinter and its preparation, can solve the problems of sinter strength and finished product rate to be improved, sinter cost increase, high price of rich ore powder, etc. , to achieve the effects of improving product market competitiveness and economic benefits, improving the quality of sintered ore, and improving mineral composition and structure

Inactive Publication Date: 2015-06-03
PANGANG GROUP RESEARCH INSTITUTE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of rich ore powder is high and transportation is difficult, resulting in an increase in the cost of sintered ore, difficulty in feeding materials, and the strength and yield of the obtained sintered ore still need to be improved

Method used

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  • Sintering mixture and vanadium-titanium sinter as well as preparation method of vanadium-titanium sinter
  • Sintering mixture and vanadium-titanium sinter as well as preparation method of vanadium-titanium sinter

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preparation example Construction

[0035] The present invention also provides a method for preparing vanadium-titanium sintered ore. The method includes: sintering the sintered mixture into pellets and sequentially carrying out distributing, pressing and sintering, the distributing makes the material layer thickness 660-750mm, The ignition temperature is 1100-1150° C., and the ignition time for sintering is 2-2.5 minutes, wherein the sintering mixture is the above-mentioned sintering mixture.

[0036] According to the present invention, the pelletizing method may be a conventional pelletizing method. For example, the method of pelletizing the sinter mixture generally includes mixing the sinter mixture with water to pelletize. Preferably, the method of granulating the sintered raw materials is to perform first-mixing and second-mixing granulation of the sintered raw materials in sequence.

[0037] Generally, the homogeneous mixing method includes mixing the sintered mixture with water for 2-4 minutes, with respec...

Embodiment 1

[0055] The sintering raw materials are mixed and pelletized according to the type and amount recorded in Table 1 (the method of first-mixing and second-mixing granulation in sequence), and then the pelletized sintering mixture is added to the sintering machine trolley for distribution , so that the height of the material layer is 690mm, and then press the material layer to press down the material layer by 20mm. At an ignition temperature of 1100° C., ignite for 2.0 minutes to sinter to obtain sintered ore. Among them, the yield, output, solid fuel consumption, sinter low-temperature reduction pulverization rate and reduction degree are shown in Table 1.

Embodiment 2

[0057] The sintering raw materials are mixed and pelletized according to the type and amount recorded in Table 1 (the method of first-mixing and second-mixing granulation in sequence), and then the pelletized sintering mixture is added to the sintering machine trolley for distribution , so that the height of the material layer is 710mm, and then carry out pressing to make the material layer pressed down by 30mm. At the ignition temperature of 1120°C, ignite for 2.1 minutes to sinter to obtain sintered ore. Among them, the yield, output, solid fuel consumption, sinter low-temperature reduction pulverization rate and reduction degree are shown in Table 1.

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Abstract

The invention discloses a sintering mixture, a vanadium-titanium sinter prepared from the sintering mixture and a preparation method of the vanadium-titanium sinter. The sintering mixture comprises the following raw materials in percentage by weight: 54-58% of vanadium-titanium-iron concentrate, 2-8% of ordinary iron concentrate, 13-16% of ordinary ore powder, 1-6% of ore-rich powder, 3-5% of medium-sized hematite ore powder, 11-13% of a solvent and 4.5-5.5% of a fuel. The sintering mixture is low in cost; by virtue of the use of the sintering mixture, the sinter ore can be produced at a high yield; the prepared sinter ore is high in strength, high in rate of finished products and excellent in low-temperature reduction pulverization performance.

Description

technical field [0001] The invention relates to a sintering mixture, a vanadium-titanium sintered ore and a preparation method thereof. Background technique [0002] At present, the ore mix structure adopted by Pansteel Group Pansteel Vanadium and Xichang Steel and Vanadium Company for sintering is "high-titanium vanadium-titanium iron concentrate + imported fines + common fines + domestic medium-grade fines", and the flux uses "limestone + Quicklime + active lime" structure. Because its main raw material is high-titanium vanadium-titanium magnetite concentrate with TFe, SiO 2 Low content, TiO 2 Due to the characteristics of high content and coarse particle size, the granulation performance of the mixture is poor, and brittle perovskite is easily formed during the sintering process, and the content of the silicate binder phase is small, resulting in poor sinter strength, low yield, and low temperature reduction conversion rate (RDI -3.15 ) is high, and the technical and ...

Claims

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Application Information

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IPC IPC(8): C22B1/16C22B1/24
CPCC22B1/16C22B1/2406
Inventor 甘勤何木光龙永伟饶家庭刘龙全
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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