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Flat oversize blast furnace

A super-large, flat technology, applied in blast furnaces, blast furnace details, blast furnace parts, etc., can solve the problems of coke strength and blast kinetic energy hindering the further improvement of blast furnace capacity, and reduce blast furnace height, save costs, and extend the use. effect of life

Pending Publication Date: 2022-03-25
HUATIAN ENG & TECH CORP MCC
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a flat super-large blast furnace to solve the problem that coke strength and blast kinetic energy hinder the further improvement of blast furnace capacity

Method used

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Embodiment Construction

[0026] The internal shape structure of the existing blast furnace, whether it is small, large or super large, generally adopts a 7-stage design, that is, from bottom to top, it includes dead iron layer 1, hearth 2, bosh 3, furnace waist 4, and furnace body 5. Furnace throat 6 and gas enclosure 7, wherein a molten iron outlet 8 is provided between the dead iron layer 1 and the hearth 2, an air supply inlet 9 is provided on the upper part of the hearth 2, and a gas outlet 10 is provided on the side of the gas enclosure 7, The upper end of the gas enclosure 7 is provided with a raw material inlet 11, and various facilities such as the furnace shell, stave and refractory materials are provided on the blast furnace body, and the belly angle, furnace body angle, and the proportions of each section are determined according to the process requirements; Coke strength, blast kinetic energy, and the volume of the blast furnace have been greatly hindered on the road to further increase, an...

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Abstract

The invention discloses a flat oversize blast furnace, relates to the technical field of ferrous metallurgy, and aims to solve the problem that coke strength and blast kinetic energy hinder further improvement of the volume of the blast furnace. The blast furnace sequentially comprises a dead iron layer, a hearth, a bosh, a bosh, a body, a throat and a gas seal cover from bottom to top, line segments with unequal lengths exist in countless line segments which pass through the vertical center line of the blast furnace and of which the two ends are located on the inner wall of the blast furnace on the cross section at any height position of the blast furnace, and the longest line segment is used as a long axis and the longest line segment is used as a short axis. The vertical distance from the end points of the other line segments to the long axis is not greater than the maximum distance that the kinetic energy of the hot air entering from the air supply inlet enables the hot air to be injected into the material column; the longer the long shaft is, the larger the volume of the blast furnace is; the flat structure is adopted, a new thought is provided for the oversize design of the blast furnace, and the worldwide problem that the volume of the existing blast furnace is difficult to be further enlarged is solved.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a flat super-large blast furnace. Background technique [0002] The blast furnace is the main iron-making equipment in my country. The large-scale blast furnace is the goal pursued by the iron-making system. This is because the large-scale blast furnace has many advantages. It can not only increase the output of molten iron per unit time, reduce the investment per unit of iron production, and improve the cost performance of molten iron. Reducing land occupation is conducive to centralized treatment of pollutants. [0003] As the world's largest iron and steel country, my country is far ahead of other countries in the world in terms of output, but a large amount of molten iron is produced by small blast furnaces with outdated equipment, high energy consumption, heavy pollution, and low labor productivity. The same production of 100 million tons of pig iron , super...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/00C21B7/02
CPCC21B7/00C21B7/02
Inventor 黄东升孙华平王磊杨继敏陈冬
Owner HUATIAN ENG & TECH CORP MCC
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