Furnace charge for vanadium-titanium magnetite blast furnace smelting, and blast furnace smelting method

A vanadium-titanium magnetite and blast furnace smelting technology, which is applied in blast furnace smelting, vanadium-titanium magnetite blast furnace smelting charge field, and can solve the problems of low smelting performance of blast furnace charge and high cost of blast furnace ironmaking

Inactive Publication Date: 2011-10-05
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low blast furnace charge smelting performance and high cost of blast furnace ironmaking in the prior art, the object of the present invention is to provide a

Method used

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Examples

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Example Embodiment

[0011] The preparation method of the vanadium-titanium sintered ore can be carried out according to the conventional preparation method in the field, for example, the vanadium-titanium iron ore concentrate and ordinary iron concentrate are combined with fuel (charcoal, coke powder) and flux ( Biochemical and / or limestone) are mixed and sintered. Among them, the amount of vanadium-titanium concentrate and ordinary iron concentrate can be the conventional amount of vanadium-titanium concentrate in the preparation of sinters in the field. Preferably, the amount of vanadium-titanium concentrate is the raw material used to form vanadium-titanium sinter 50-55% of the total weight, and the amount of ordinary iron concentrate is 25-30% by weight of the total weight of the raw materials used to form the vanadium-titanium sinter. The commonly used sintering method now is sintering on a belt sintering machine. For example, the mixed iron ore and flux are added to the trolley through the d...

Example Embodiment

[0023] Example 1

[0024] This embodiment is used to illustrate the method of blast furnace smelting using the vanadium-titanium magnetite blast furnace smelting charge of the present invention.

[0025] Preparation of vanadium-titanium sinter: 52 parts by weight of vanadium-titanium iron concentrate, 28 parts by weight of ordinary iron concentrate, 5 parts by weight of coke powder and 15 parts by weight of limestone are distributed on the magnetic roller distributor and added to On the trolley, sintering was performed at 1350°C for 30 minutes to obtain vanadium-titanium sintered ore. The sintering machine speed of the vanadium-titanium sintered ore was 1.71m / min and the vertical sintering speed was 21.60mm / min. The drum strength of vanadium-titanium sinter (according to the ISO drum strength defined by GB13242, refers to 7.5 kg of 40-10mm sinter in ISO drum machine (SQZG--4 type; Hebi Metallurgical Machinery Equipment Co., Ltd.) to rotate 200 After conversion, the percentage of s...

Example Embodiment

[0028] Example 2

[0029] This embodiment is used to illustrate the method of blast furnace smelting using the vanadium-titanium magnetite blast furnace smelting charge of the present invention.

[0030] Sintered ore was prepared according to the method of Example 1, except that the amount of each material was 60 parts by weight of vanadium-titanium iron concentrate, 20 parts by weight of ordinary iron concentrate, 7 parts by weight of coke powder, and 13 parts by weight of limestone.

[0031] The vanadium-titanium pellets were prepared according to the method of Example 1, except that the amount of vanadium-titanium concentrate was 90 parts by weight, and the amount of ordinary iron concentrate was 10 parts by weight. The compressive strength of the pellets is 2700N / piece.

[0032] Blast furnace smelting: 65 parts by weight of vanadium-titanium sinter and 35 parts by weight of vanadium-titanium pellets are fed into the blast furnace for blast furnace smelting (calculation shows that ...

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Abstract

The invention provides a furnace charge for vanadium-titanium magnetite blast furnace smelting and a blast furnace smelting method. The furnace charge comprises a vanadium-titanium agglomerated ore and a vanadium-titanium pellet ore. The vanadium-titanium agglomerated ore is produced from a mixture of a vanadium-titanium iron concentrate and a common iron concentrate through sintering. The vanadium-titanium pellet ore is produced from a vanadium-titanium iron concentrate or a mixture of a vanadium-titanium iron concentrate and a common iron concentrate through roasting. The common iron concentrate is a vanadium-free and titanium-free iron concentrate. In the invention, the present furnace charge only comprises a vanadium-titanium agglomerated ore and a vanadium-titanium pellet ore and a common lump ore is not utilized in smelting processes, thus a clinker production rate is increased. Through the present furnace charge, a droplet interval and a maximum pressure difference of a stock column are reduced and it is shown that a cohesive zone of blast furnace smelting processes is low and a permeability of the stock column is improved. Therefore, blast furnace smelting is intensified and blast furnace charge smelting performances are improved.

Description

technical field [0001] The invention belongs to the technical field of ironmaking, and relates to a blast furnace smelting charge of vanadium-titanium magnetite and a blast furnace smelting method using the charge. Background technique [0002] In recent years, the main method of smelting vanadium-titanium magnetite in Panzhihua Iron and Steel's blast furnace is to sinter vanadium-titanium iron concentrate and ordinary fine ore to produce sintered ore, and to produce oxidized balls by pelletizing vanadium-titanium iron concentrate and ordinary iron concentrate Then add sinter, pellets and a small amount of lump ore into the blast furnace together with coke in a certain proportion, and the lower part blows the coke to generate reducing gas, the reducing gas rises and the furnace charge falls to reduce the ore, and then Melting and dripping into the furnace hearth to complete the ironmaking and smelting process and realize the separation of slag and iron. The smelting of high...

Claims

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Application Information

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IPC IPC(8): C21B5/00C22B1/14
Inventor 付卫国蒋胜文永才张海军
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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