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Treatment process of converter steel slag

A converter steel slag and processing technology, which is applied in the field of iron and steel production, can solve the problems of increasing labor costs, occupying a large area of ​​the site, and unreasonable process layout, etc., and achieve the effects of reducing investment costs, occupying a small area, and reducing logistics costs.

Inactive Publication Date: 2019-11-22
XILIN STEEL GROUP ACHENG IRON & STEEL
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Problems solved by technology

[0002] At present, the design of 200,000 tons of converter steel slag treatment adopts multiple long transmission belts arranged in a "mouth" shape, with complex structure, high investment cost, unreasonable process layout, large site occupation, low logistics efficiency, scattered process equipment, and increased Labor costs, reduced productivity

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  • Treatment process of converter steel slag

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Embodiment 1

[0010] refer to figure 1 , in the steel slag treatment process, the 80 tons of converter slag is poured into a 16 cubic meter slag tank, and the slag tank is transported by the slag tank truck to the slag cross-heating slag pool. Simple magnetic separation to recover part of the steel scrap, and then use the hook machine to load the steel slag into a dump truck and transport it to the steel slag storage room of the slag yard (brick-concrete structure, roof insulation color board). There are 4 hot slag pools in the converter workshop, each slag pool can hold 12 furnaces of steel slag about 160 tons, the treatment cycle is 20-24 hours, and the daily slag production is 540-580 tons. The converter slag is placed in the converter slag storage area (which can break large pieces of converter slag by dropping the hammer), and the forklift is used to load the 8mХ2m grid sieve (the screen grid is 200mmХ200mm, with an inclination angle of about 10 degrees, the height of the bottom edge i...

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Abstract

The invention belongs to the technical field of steel production, and particularly relates to a treatment process of converter steel slag. Slag tanks are conveyed to furnace slag heat crossing slag stewing pools through a slag tank car, and after the steel slag is hot-poured by fetched water and hot-stewed to be pulverized, part of scrap steel is magnetically separated and recovered through an electromagnetic lifter; the steel slag is fed to a grate through a forklift; the screened furnace slag enters a steel slag screening and breaking comprehensive treatment station through a belt conveyor;the converter steel slag passes through a first electromagnetic iron picker and a second electromagnetic iron picker, and steel slag is screened from the attracted magnetic steel slag through a tertiary bar screen; the non-attracted converter slag is broken and then passes through a third electromagnetic iron picker, non-magnetic portions enter a cone breaker through a chute, and magnetic slag picked through a fourth electromagnetic iron picker after being broken is conveyed to an ironmaking cold ore library through a belt conveyor; and the non-magnetic steel slag broken through the cone breaker enters a secondary bar screen through a chute, the steel slag with the screened size is conveyed to the ironmaking cold ore library through a belt conveyor, the steel slag screened through the secondary bar screen passes through a large-dip-angle belt conveyor through a chute and then returns to the cone breaker to be broken, and closed-loop circulation is achieved.

Description

Technical field: [0001] The invention belongs to the technical field of iron and steel production, and in particular relates to a converter steel slag treatment process. Background technique: [0002] At present, the design of 200,000 tons of converter steel slag treatment adopts multiple long transmission belts arranged in a "mouth" shape, with complex structure, high investment cost, unreasonable process layout, large site occupation, low logistics efficiency, scattered process equipment, and increased Labor costs reduce production efficiency. Therefore, it is very necessary to design a converter steel slag treatment process with reasonable process design and high production efficiency. Invention content: [0003] The object of the present invention is to provide a converter steel slag treatment process with reasonable process design and high production efficiency. The land area has achieved the purpose of "zero discharge" of converter slag solid waste and high-value u...

Claims

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Application Information

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IPC IPC(8): C21B3/06
CPCC21B3/06C21B2400/024Y02W30/50Y02P10/20
Inventor 付宝栋
Owner XILIN STEEL GROUP ACHENG IRON & STEEL
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