Sintering method of high-Ti type V-Ti magnetite concentrate

A technology of vanadium-titanium magnetite concentrate and sintering method, which is applied in the field of sintering of high-titanium vanadium-titanium magnetite concentrate, and can solve the problems of unreported test and production data, etc.

Active Publication Date: 2010-06-02
PANGANG GRP PANZHIHUA STEEL & VANADIUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Data research shows that there is no report on the test and production data of adding some medium-titanium vanadium-titanium magnetite concentrate to the sintering of vanadium-titanium ore.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Medium-titanium type vanadium-titanium magnetite concentrate is added with 5%, the proportion of rich ore is 28%, the proportion of returned ore is 35%, the proportion of quicklime is 5%, the proportion of limestone is 7.7%, and the proportion of coke powder is 4.8%. Sintering basicity control is 2.35 times (CaO / SiO in sinter 2 Ratio), the ratio of quicklime digestion water is 2:1, the water content of the sintering mixture is 7.3±0.1wt%, and the material is lightly compacted.

[0044] The results show that, compared with the baseline period, the proportion of sinter mixture particle size > 3mm is 57%, the content of calcium ferrite in sintered ore increases by 1.5 percentage points, the drum strength of sintered ore increases by 0.5 percentage points, and the yield increases by 0.75 percentage points. Yield increased by 0.8%.

Embodiment 2

[0046] Medium-titanium type vanadium-titanium magnetite concentrate is added with 7.5%, the ratio of rich ore is 28%, the ratio of returned ore is 37%, the ratio of quicklime is 6%, the ratio of limestone is 6.3%, and the ratio of coke powder is 4.85%. The sintering alkalinity is 2.35, the ratio of quicklime digestion water is 2:1, the water content of the sintering mixture is 7.3%, and the material is lightly compacted.

[0047] The results show that, compared with the base period, the proportion of sinter mixture particle size > 3mm is 61%, the calcium ferrite content in sintered ore increases by 1.75 percentage points, the drum strength of sintered ore increases by 0.5 percentage points, and the finished product rate increases by 1.8 percentage points. Yield increased by 2.0%.

Embodiment 3

[0049] Medium-titanium type vanadium-titanium magnetite concentrate is added by 10%, the ratio of rich ore is 28%, the ratio of returned ore is 39%, the ratio of quicklime is 7%, the ratio of limestone is 5%, and the ratio of coke powder is 4.9%. The sintering alkalinity is 2.35, the ratio of quicklime digestion water is 2:1, the water content of the sintering mixture is 7.3+0.1%, and the material is lightly compacted.

[0050] The results show that, compared with the base period, the proportion of sinter mixture particle size > 3mm is 67%, the content of calcium ferrite in sintered ore increases by 2 percentage points, the drum strength of sintered ore increases by 0.8 percentage points, and the finished product rate increases by 2.3 percentage points. Yield increased by 3.0%.

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PUM

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Abstract

The invention provides a sintering method of a high-Ti type V-Ti magnetite concentrate, comprising the following steps of: carrying out granularity treatment on a coke powder, a rich ore powder and a return fine powder which are used for sintering; carrying out damp milling treatment on a medium-Ti type V-Ti magnetite concentrate to enable the proportion of granules to the granularity smaller than 0.074mm in the medium-Ti type V-Ti magnetite concentrate to achieve above 55 percent; and burdening the medium-Ti type V-Ti magnetite concentrate with the weight percent of 5-12.5 to replace the high-Ti type V-Ti magnetite concentrate, and mixing by adding water in a mixture after the medium-Ti type V-Ti magnetite concentrate, the high-Ti type V-Ti magnetite concentrate, the rich ore powder, quick limb, limestone, the coke powder and the return fine powder are proportioned and put into a blending silos; and carrying out ignition and air draft sintering by filling the mixture into a sintering cup, wherein a FeO content range of a sintering ore is controlled from 7.6wt percent to 8.1wt percent, the sintering temperature is controlled at 1270-1340 DEG C, the vertical sintering speed is controlled from 17.8mm / min to 18.6mm / min, and the thickness of a material layer is above 650mm.

Description

technical field [0001] The invention relates to a sintering method of high-titanium vanadium-titanium magnetite concentrate, more specifically, the invention relates to a high-titanium vanadium-titanium magnetite concentrate which is added with a part of medium-titanium vanadium-titanium magnetite concentrate instead of a part of high-titanium vanadium-titanium magnetite concentrate A sintering method of titanium-type vanadium-titanium magnetite concentrate. Background technique [0002] Since the Panzhihua vanadium-titanium magnetite concentrate has a coarse particle size (≤0.074mm accounting for about 52%), low silicon (SiO 2 About 3.3%), high titanium (TiO 2 12.7% or more), poor spheroidization and water absorption, so it is not easy to sinter, and a brittle perovskite is formed during the sintering process. Calcium ferrite is different, resulting in poor strength of sintered ore, low yield, low temperature reduction pulverization rate (RDI -3.15 ) is high, which serio...

Claims

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Application Information

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IPC IPC(8): C22B1/16
Inventor 何木光张义贤饶家庭何群甘勤李玉洪吴耀辉向绍红蒋大军
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM
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