Preparation method of high-titanium type vanadium-titanium magnetite agglomerate added with limonite

A technology of vanadium-titanium magnetite and sintered ore, which is applied in the field of sintered ore preparation, can solve the problems of low limonite addition, achieve the effects of increasing yield, increasing the ratio of adding and adding, and reducing costs

Inactive Publication Date: 2012-05-30
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the amount of limonite added in the existing method is relatively low. If the limonite powder is not treated, its use in high-titanium vanadium-titanium magnetite sinter will be greatly limited due to its adverse effects on sintering.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]The ore composition is shown in Table 2, and the batching parameters are: vanadium-titanium magnetite concentrate is added with 46 parts by weight, domestic high-grade common fine ore proportion is 5 parts by weight, imported fine ore is 19 parts by weight, limonite fine ore is 10 parts by weight (by fine Grinding treatment, wherein the proportion of 2 is 2.2.

[0028] Sintering parameters: suction negative pressure 12kPa, ignition temperature 1050°C, ignition time 2.5min, primer 2.5kg.

[0029] The obtained sinter indicators are: the average particle size of sinter is 23.74mm, the ISO drum index of sinter is 54.67%, and the utilization coefficient of sinter cup is 1.498t / (m 2 .h), >5mm yield rate 78.53%.

Embodiment 2

[0031] The ore composition is shown in Table 2, and the batching parameters are: vanadium-titanium magnetite concentrate is added with 46 parts by weight, domestic high-grade common fine ore proportion is 5 parts by weight, imported fine ore is 19 parts by weight, limonite fine ore is 10 parts by weight (by fine Grinding treatment, wherein the proportion of 2 is 2.2.

[0032] Sintering parameters: suction negative pressure 12kPa, ignition temperature 1050°C, ignition time 2.5min, primer 2.5kg.

[0033] The obtained sinter indicators are: the average particle size of sinter is 24.16mm, the ISO drum index of sinter is 56.00%, and the utilization coefficient of sinter cup is 1.528t / (m 2 .h), >5mm yield 79.31%.

Embodiment 3

[0035] The ore composition is shown in Table 2, and the batching parameters are: vanadium-titanium magnetite concentrate is added with 46 parts by weight, domestic high-grade common fine ore proportion is 5 parts by weight, imported fine ore is 19 parts by weight, limonite fine ore is 10 parts by weight (by fine Grinding treatment, wherein the proportion of 2 is 2.2.

[0036] Sintering parameters: suction negative pressure 12kPa, ignition temperature 1050°C, ignition time 2.5min, primer 2.5kg. The sinter indicators are: the average particle size of sinter is 24.24mm, the ISO drum index of sinter is 56.33%, and the utilization coefficient of sinter cup is 1.537t / (m 2 .h), >5mm yield rate 78.67%.

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Abstract

The invention belongs to the technical field of preparation methods of an agglomerate, and in particular relates to a preparation method of a high-titanium type vanadium-titanium magnetite agglomerate added with limonite. The invention aims to solve the first technical problem of providing a preparation method of a high-titanium type vanadium-titanium magnetite agglomerate added with limonite, which has the advantages of large strength and high rate of finished products. The method comprises the following concrete steps: adding limonite into the agglomerate raw material, and then, preparing the agglomerate, wherein the weight ratio of the agglomerate raw material to the limonite is 88-92:8-12, and the limonite is crushed to the granules of which the granularity is less than 1mm, wherein the weight of the granules of which the granularity is less than 0.074mm accounts for 10%-50% of the total weight. The invention improves the adding proportion of the limonite powder in the high-titanium type vanadium-titanium magnetite and reduces the cost of the raw material for production.

Description

technical field [0001] The invention belongs to the technical field of sinter preparation methods, in particular to a preparation method of high-titanium vanadium-titanium magnetite sinter with limonite added. Background technique [0002] Since the cost of raw materials accounts for 80% of the total cost of sintered ore during the sintering production process, metallurgists began to study the sintering technology and production process of adding more limonite and cheap iron ore, starting from the source and greatly reducing Sinter cost, to achieve the purpose of further reducing the cost of pig iron. Limonite is ferric oxide containing crystal water, non-magnetic, it can be formed by weathering of other iron ores, the chemical formula is commonly used mFe 2 o 3 ·nH 2 O to represent. According to the content of crystal water, the theoretical iron content of limonite can be increased from 55.2% to 66.1%. Most of the iron-bearing minerals are 2Fe 2 o 3 ·3H 2 The O form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/16
Inventor 饶家庭张义贤向绍红
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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