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Sintering method of high-grade high-titania vanadium-titanium magnetite concentrate

A technology of vanadium-titanium magnetite concentrate and sintering method, which is applied in the field of sintering of high-grade high-titanium vanadium-titanium magnetite concentrate, can solve problems such as experimental studies that have not been reported, and achieve improved quality, reduced output, improved mineral composition and structure effect

Inactive Publication Date: 2012-05-09
PANGANG GROUP RESEARCH INSTITUTE CO LTD +2
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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 experimental research on the production of high-titanium sinter from high-grade vanadium-titanium magnetite concentrate under the condition of high proportion (dry material proportion ≥ 60%)

Method used

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  • Sintering method of high-grade high-titania vanadium-titanium magnetite concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Option A

[0047] The proportion of high-grade vanadium-titanium magnetite concentrate is 65%, the proportion of low-grade ordinary fine ore is 15%, the proportion of returned ore powder is 25%, the proportion of quicklime is 7%, the proportion of limestone is 6.2%, and the proportion of coke powder is The ratio is 4.8%, the ratio of quicklime digestion water is 2:1, and the water content of the sintering mixture is 7.5±0.1wt%.

[0048] The results show that the proportion of sinter mixture with particle size greater than 3mm is more than 60wt%, the drum strength of sintered ore is 74%, the sintered finished product rate is 75wt%, the TFe grade of sintered ore is 50.1wt%, SiO 2 Content is 5.3wt%, TiO 2 The content is 6.5wt%, and the sintering basicity is 2.25±0.05.

Embodiment 2

[0050] Option B

[0051] The proportion of high-grade vanadium-titanium magnetite concentrate is 65%, the proportion of low-grade ordinary fine ore is 15%, the proportion of returned ore powder is 25%, the proportion of quicklime is 8%, the proportion of limestone is 5.2%, and the proportion of steel slag is The proportion of coke powder is 4.8%, the proportion of quicklime digestion water is 2:1, and the moisture content of sintering mixture is 7.6±0.1wt%.

[0052] The results show that the proportion of sinter mixture with particle size greater than 3mm is more than 65wt%, the drum strength of sintered ore is 75%, the sintered finished product rate is 76wt%, the TFe grade of sintered ore is 50wt%, SiO 2 Content is 5.2wt%, TiO 2 The content is 6.5wt%, and the sintering basicity is 2.3±0.05.

Embodiment 3

[0054] Plan C

[0055] The proportion of high-grade vanadium-titanium magnetite concentrate is 68%, the proportion of low-grade ordinary powder ore is 12%, the proportion of returned ore powder is 25%, the proportion of quicklime is 7%, the proportion of limestone is 6.2%, and the proportion of steel slag is The proportion of coke powder is 4.8%, the proportion of quicklime digestion water is 2:1, and the moisture content of sintering mixture is 7.6±0.1wt%.

[0056] The results show that the proportion of sinter mixture with particle size greater than 3mm is more than 60wt%, the drum strength of sintered ore is 74%, the sintered finished product rate is 74.5wt%, the TFe grade of sintered ore is 50.4wt%, SiO 2 Content is 4.8wt%, TiO 2 The content is 6.8wt%, and the sintering basicity is 2.45±0.05.

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Abstract

The invention discloses a sintering method of a high-grade high-titania vanadium-titanium magnetite concentrate. The sintering method comprises the steps of: 1) placing a mixture composed of 65-70 parts by weight of high-grade vanadium-titanium magnetite concentrates, 10-15 parts by weight of low-grade ordinary fine ores, 6-8 parts by weight of quicklime, 5-6 parts by weight of limestone, 0-2 parts by weight of steel slag, 4.6-5 parts by weight of coke powder, and return mineral powder into a mixer and adding water for mixing, with the total weight of the high-grade vanadium-titanium magnetite concentrates and the low-grade ordinary fine ores controlled at 80 wt% of the mixture excluding the return mineral powder, and with sum of the proportion of the return mineral powder in the mixture excluding the return mineral powder and the sintering yield of a sintering machine less than or equal to 1; 2) putting the mixture in a sintering cup for ignition and air draft sintering, with the FeO content of the sintered ore controlled at 7-10 wt%, th vertical sintering speed controlled at 17-20mm / min, the thickness of a material layer controlled at 650-750mm, and the sintering temperature controlled at 1250-1300DEG C. The method of the invention can optimize the burdening structure of sintering raw materials and reduce the purchase cost of raw materials.

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 sintering method of high-grade high-titanium vanadium-titanium magnetite concentrate. Background technique [0002] A company in my country is currently the only one producing high-titanium vanadium-titanium sintered ore (sintered ore TiO 2 content as high as about 7.5wt%), the iron-containing raw materials used for sintering are mainly Panzhihua high-titanium vanadium-titanium magnetite concentrate (accounting for more than 60wt% of iron-containing materials). Because Panzhihua vanadium-titanium magnetite concentrate has low TFe content (TFe<55wt%), coarse particle size (≤0.074mm accounts for about 52%), low silicon (SiO 2 About 3.3%), high titanium (TiO 2 More than 12.7%), poor spheroidization and water absorption, so it is not easy to sinter, and brittle perovskite (CaO TiO 2 ), sintered ferrite ha...

Claims

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Application Information

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IPC IPC(8): C22B1/16
Inventor 饶家庭张义贤林文康
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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