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A system and method for mixing distribution of large and small tanks on the top of a blast furnace

A technology of mixing cloth and cloth system, applied in the direction of bell and funnel arrangement, etc., can solve the problems of inability to realize grading and mass-separation loading of raw fuel, natural mixing and natural segregation, collision with the side wall of the material tank, etc. Short renovation period, reducing the effect of wind break

Active Publication Date: 2020-11-24
INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the blast furnaces now adopt the furnace top and tank distribution system, and the inlet and outlet of the tank are close to the center line of the blast furnace. As a result, when the raw fuel is loaded into the tank, the material flow trajectory collides with the side wall of the tank, resulting in obvious natural mixing and natural segregation, etc., it is impossible to flexibly realize the classification and quality of raw materials into the furnace according to the production requirements
There are also some blast furnaces that use the furnace top string tank distribution system, which also has the problem of not being able to realize the loading of raw materials in different grades.

Method used

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  • A system and method for mixing distribution of large and small tanks on the top of a blast furnace
  • A system and method for mixing distribution of large and small tanks on the top of a blast furnace
  • A system and method for mixing distribution of large and small tanks on the top of a blast furnace

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with accompanying drawing by specific embodiment:

[0030] For realizing above-mentioned purpose of the invention, the technical scheme that the present invention adopts is:

[0031] The invention discloses a mixing distributing system for large and small tanks on the roof of a blast furnace, which includes two large tanks, the east tank and the west tank, two small tanks, the upper small tank and the lower small tank, a flap chute and a central throat.

[0032] Two large tanks are arranged side by side, two small tanks are arranged in series in the height direction, and the two small tanks are arranged in series in the height direction, generally parallel to the large tank, and the rotation axis of the small tank is on the symmetrical plane of the two large tanks, and properly Move outward, and the moving distance is about 1 to 1.5 times the maximum cross-sectional diameter of the small tank. The vol...

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Abstract

The invention provides a mixing and distributing system for large tanks and small tanks on the furnace top of a blast furnace and method. The mixing and distributing system for the large tanks and thesmall tanks on the furnace top of the blast furnace comprises the two large tanks, the two small tanks, a turning plate chute and a center throat pipe. The two large tanks are symmetrically arrangedside by side. The two small tanks are arranged in a vertical series-connection manner and located on the symmetrical faces of the two large tanks. The volume of the small tanks is 20-25% of that of the large tanks. The turning plate chute is arranged above the upper small tank and the two large tanks, can rotate horizontally and can be turned over in the vertical direction. The center throat pipeis arranged below the lower small tank and the two large tanks. The four tanks are provided with independent pressure equalizing systems and diffusing systems correspondingly. In combination with thespecific technology requirement, matching is carried out flexibly, the time sequence for distributing is set, the problem that crude fuel is loaded into the blast furnace in a classified manner according to the quality can be solved, and the system belongs to the technical field of metallurgical equipment research and improvement.

Description

technical field [0001] The invention belongs to the technical field of research and improvement of metallurgical equipment, and relates to a system and method for mixing material distribution of large and small tanks on the roof of a blast furnace. Background technique [0002] With the continuous mining of coal resources and iron ore resources, the raw materials for blast furnace ironmaking are constantly changing, including fluctuations in the particle size and strength of coke and sinter, which have a great negative impact on the stable production of blast furnaces. However, different parts of the blast furnace (especially the radial direction) have different requirements for raw materials and fuels, and there are also large differences in air permeability. In order to make the distribution of high-quality and low-quality raw materials in the blast furnace controllable, it is necessary to realize the graded and qualitative loading of raw materials when distributing materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/20
CPCC21B7/20
Inventor 朱明华杜屏
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE
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