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Bucket type closed steel smelting furnace

A steel-making furnace and barrel-type technology, applied in the field of barrel-type closed-chamber steel-making furnaces, can solve the problems of poor environmental protection, complicated procedures, low thermal efficiency, etc., and achieve the effects of large recovery amount, reduction of environmental pollution, and high thermal efficiency.

Inactive Publication Date: 2006-01-11
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex procedures, high cost, low thermal efficiency and poor environmental protection status of existing steelmaking equipment

Method used

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  • Bucket type closed steel smelting furnace

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Embodiment Construction

[0009] Barrel-type closed-chamber steelmaking furnace, the steel ladle is equipped with several argon or nitrogen gas-permeable bricks, and the upper edge is provided with a slag flow tank. The ladle is equipped with a lifting and lowering mechanism for receiving and transporting molten iron for blowing and transporting molten steel for refining or continuous casting.

[0010] The lower part of the plug-in closed furnace is straight cylindrical, and the inside and outside are protected by refractory materials, which are used to insert molten steel for blowing; the size of the middle part is determined according to the design principle of the top-bottom compound blowing converter, and the upper part is connected with the scrap steel preheating furnace body , to prevent air leakage. The function of the plug-in closed furnace is to provide a reaction space for the foamed molten steel and slag; there is a gap of 100-500mm between the plug-in closed furnace and the steel ladle, sta...

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Abstract

One kind of barrel type shuts the chest cavity steel-smelting furnace, belongs to the steel-making domain, specially involves a kind of steel-making special purpose equipment. The barrel type steel-smelting furnace (3) is composed by steel ladle (1) and the jack-in type enclosed type chamber, steel ladle (1) on along supposes slag spout, gets down supposes ventilates the brick (2), the enclosed chamber (3) upside (5) is connected with the scrap steel preheating furnace stack, the furnace stack (5) is equipped with feeds in raw material the mouth and the water cooling holds the material arm (6), the stove hall (3) on installs has the oxygen gun (4). The invention equipment quantity few, smelting cycle short, thermal efficiency high, the coal gas quality good, the recycling quantity is big, remarkably reduced the environmental pollution, but also created had continuously measured the temperate sample condition, improved the molten steel ingredient and the temperature control.

Description

Background technique [0001] The invention belongs to the field of steelmaking, in particular to a special equipment for steelmaking. technical field [0002] At present, my country's converter steel output accounts for the vast majority of the national steel output, but there are the following deficiencies: (1) From molten iron to molten steel that meets the requirements through converter smelting, the process is complicated (mixed iron furnace - molten iron tank - converter - ladle), occupying There are many equipments, the cost increases and a lot of heat is taken away; (2) the open operation of the converter will reduce the quality of the recovered gas due to the inhalation of air from the furnace mouth; The end point control is difficult, the investment is high, and it affects the improvement of productivity and the development of varieties; (4) The scrap steel is loaded into the furnace without preheating, which reduces the thermal efficiency of steelmaking and affects th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/00
CPCY02P10/20
Inventor 张鉴成国光
Owner UNIV OF SCI & TECH BEIJING
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