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Super-high alkalinity vanadium-titanium sinter and production method thereof

A vanadium-titanium sinter and production method technology, applied in the field of iron and steel smelting, to achieve the effects of appropriate mechanical strength and reducibility, reduce sintering speed, and increase utilization efficiency

Active Publication Date: 2018-04-06
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the sintering process of existing sintered ore with an alkalinity greater than 3.0, the invention provides a production method of ultra-high alkalinity sintered ore

Method used

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  • Super-high alkalinity vanadium-titanium sinter and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] Use ultra-high alkalinity vanadium-titanium sinter 1 for batching, according to the control parameters of process 4 in Table 4, other parameters remain unchanged, after mixing, the particle size of the mixture is 75.31% above +3mm.

[0032] The results of the benchmark example are as follows: the obtained R is 3.3, the TFe content of the sintered ore is 48.08%, the FeO content is 7.04%, and the TiO 2 The ultra-high alkalinity sinter with a content of 5.12% and a drum index of 73.23% has a sintering time of 34 minutes and a utilization factor of 1.213t / m for the sintering machine 2 .h, the sintering yield is 82.62%.

Embodiment 1

[0035] The results of Example 1 are as follows: the obtained R is 3.3, the sinter TFe content is 48.11%, the FeO content is 7.64%, and the TiO 2 The ultra-high alkalinity sinter with a content of 5.35% and a drum index of 73.41% has a sintering time of 47 minutes and a utilization factor of 0.943t / m for the sintering machine 2 .h, the sintering yield is 78.25%.

Embodiment 2

[0038] The results of Example 2 are as follows: the obtained R is 3.3, the sinter TFe content is 48.17%, the FeO content is 10.64%, and the TiO 2 The ultra-high alkalinity sinter with a content of 5.15% and a drum index of 74.71% has a sintering time of 26 minutes and a sintering machine utilization factor of 1.121t / m 2 .h, the sintering yield is 75.25%.

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Abstract

The invention belongs to the field of iron and steel smelting and particularly relates to super-high alkalinity vanadium-titanium sinter and a production method thereof. The production method of the super-high alkalinity vanadium-titanium sinter comprises the following steps that by weight, 40%-50% of vanadium-titanium concentrate, 30%-40% of fine ore, 12%-15% of active ash, 3%-5% of limestone and3%-4% of coke powder are mixed evenly, water is added, the mixture is mixed and made into a sintering mixture with the water content of 6.5%-6.8%, the sintering mixture is laid in a sintering machine, the thickness is 550-850 mm, ignition is conducted for sintering, and the sinter is obtained after sintering is finished. Through the production method, the sinter with high alkalinity and good quality can be obtained.

Description

technical field [0001] The invention belongs to the field of iron and steel smelting, and in particular relates to a super-high alkalinity vanadium-titanium sintered ore and a production method thereof. Background technique [0002] The existing sintering equipment is mainly designed and manufactured to meet the requirements of sinter with general alkalinity (basicity less than 3.0), which is not suitable for the production of ultra-high alkalinity sintered ore. Sintered ore with a basicity greater than 3.0 is very easy to appear The problems of over-burning sinter, dense sinter texture and high ferrous content, and the difficulty of reducing sinter in the blast furnace will cause problems such as an increase in the fuel ratio and an increase in the cost of pig iron. Since ultra-high alkalinity sintered ore needs to be mixed with a large amount of solvent (mainly limestone, active lime, etc.), the sintering temperature increases rapidly, shortening the heating time, and shor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/22
CPCC22B1/22
Inventor 王禹键饶家庭蒋胜胡鹏谢洪恩
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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