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Device and method for feeding steel scraps into blast furnace for iron making

A technology for blast furnace ironmaking and steel shavings, which is applied to blast furnaces, blast furnace details, blast furnace parts, etc., can solve the problems of reduced iron yield of Fe element, high energy consumption of electric arc furnaces, and large pollution, etc. High recovery rate, smooth conveying, uniform mixing of materials

Active Publication Date: 2017-10-24
HENAN DRAGON INTO COAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the object of the present invention is to address the deficiencies in the prior art, and provide a device and method for putting steel scrap into blast furnace for ironmaking, which can solve the problems of high energy consumption and heavy pollution in electric arc furnaces, and at the same time increase the amount of Fe element The yield and the coke ratio of blast furnace ironmaking can also be reduced

Method used

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  • Device and method for feeding steel scraps into blast furnace for iron making
  • Device and method for feeding steel scraps into blast furnace for iron making
  • Device and method for feeding steel scraps into blast furnace for iron making

Examples

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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, a device for scrap steel shavings into a blast furnace for ironmaking includes an ironmaking blast furnace 1 and a feeding conveyor chain arranged on one side of the ironmaking blast furnace 1. The feeding conveyor chain is composed of three stages, including a primary conveyor chain, The secondary conveyor chain and the tertiary conveyor chain, the primary conveyor chain includes the primary iron ore belt conveyor 2 and the primary coke belt conveyor 3 and the iron ore below the tail end of the primary iron ore belt conveyor 2 Vibrating screen 4, the iron ore it belongs to is sintered iron ore, and the secondary conveying chain is the secondary conveying belt 5 located below the iron ore vibrating screen 4 and the primary coke belt conveyor 3, and the tertiary conveying chain is located at the The tertiary hopper 6 at the tail end of the secondary conveyor belt 5 and the tertiary bucket elevator 7 located below the tertiary hopper 6 are compo...

Embodiment 2

[0037] Such as figure 2As shown, a device for scrap steel shavings into a blast furnace for ironmaking includes an ironmaking blast furnace 1 and a feeding conveyor chain arranged on one side of the ironmaking blast furnace 1. The feeding conveyor chain is composed of three stages, including a primary conveyor chain, The secondary conveyor chain and the tertiary conveyor chain, the primary conveyor chain includes the primary iron ore belt conveyor 2 and the primary coke belt conveyor 3 and the iron ore below the tail end of the primary iron ore belt conveyor 2 The vibrating screen 4, the iron ore belonging to it is sintered iron ore and lump ore, the secondary conveying chain is the secondary conveying belt 5 located below the iron ore vibrating screen 4 and the primary coke belt conveyor 3, and the tertiary conveying chain It consists of a tertiary hopper 6 located at the tail end of the secondary conveyor belt 5 and a tertiary bucket elevator 7 located below the tertiary ho...

Embodiment 3

[0043] Such as image 3 As shown, a device for scrap steel shavings into a blast furnace for ironmaking includes an ironmaking blast furnace 1 and a feeding conveyor chain arranged on one side of the ironmaking blast furnace 1. The feeding conveyor chain is composed of three stages, including a primary conveyor chain, The secondary conveyor chain and the tertiary conveyor chain, the primary conveyor chain includes the primary iron ore belt conveyor 2 and the primary coke belt conveyor 3 and the iron ore below the tail end of the primary iron ore belt conveyor 2 Vibrating screen 4, the iron ore to which it belongs is sintered iron ore, and the secondary conveying chain is the secondary conveying belt 5 located below the conveying vibrating screen 4 and the primary coke belt conveyor 3, and the tertiary conveying chain is located at the The third-stage hopper 6 at the tail end of the secondary conveyor belt 5 and the third-stage bucket elevator 7 located below the third-stage ho...

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Abstract

The invention discloses a device and a method for feeding steel scraps into a blast furnace for iron making, and belongs to the technical field of smelting. The device comprises an iron making blast furnace and a feeding conveying chain, wherein the feeding conveying chain is arranged on one side of the iron making blast furnace; a steel scrap conveying belt is arranged on the side edge of the feeding conveying chain; and the steel scraps conveyed by the steel scrap conveying belt and iron ore conveyed by the feeding conveying chain together enter the blast furnace for iron making. The device and the method have the advantages that due to the fact that the blast furnace has the relatively strong reducing capacity, the average yield of Fe of the steel scraps can be increased from 84% by an electric arc steel making furnace to 98-99.5% by the blast furnace for iron making, meanwhile, the coke ratio or the fuel ratio for per ton of iron of the blast furnace is lowered, specifically, the coke consumption or fuel consumption can be decreased by 20-35 kilograms every time when 10% of the steel scraps is added, and therefore the yield of the Fe can be obviously improved, and in addition, the coke ratio or the fuel ratio can be obviously decreased.

Description

technical field [0001] The invention belongs to the technical field of smelting, and in particular relates to the technical field of recycling and smelting scrap steel chips, in particular to a device and method for feeding scrap steel scraps into a blast furnace for ironmaking. Background technique [0002] Steel scrap is the waste left after the cutting of steel materials. Scrap steel scraps are entangled with each other and difficult to handle, so scrap steel scraps are usually used in electric arc furnace steelmaking, scrap steel scraps can enter the electric arc furnace as a whole group for recycling, but this recycling has its disadvantages, first, the recycling rate is low, reduction and oxidation The ability of iron is weak, and the yield rate of Fe is generally about 84%. In addition, the amount of smoke generated is large and the energy consumption is large. Now, the country is comprehensively cleaning up the production of strip steel, and the simple electric arc f...

Claims

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Application Information

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IPC IPC(8): C21B5/00C21B7/00
CPCC21B5/008C21B7/00Y02P10/20
Inventor 朱书成王希彬
Owner HENAN DRAGON INTO COAL TECH CO LTD
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