A blast furnace ironmaking system
A blast furnace ironmaking and blast furnace technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve problems such as large floor area, heating air temperature, heat resistance, and maintenance difficulties, so as to save floor space and reduce purchase costs , the effect of reducing the size of the configuration
Active Publication Date: 2015-12-02
BERIS ENG & RES CORP
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Problems solved by technology
However, due to the large volume of the hot blast furnace, large floor space, high construction investment, and difficult maintenance, and the temperature of the heating air is restricted by the heat-resistant temperature of the regenerative refractory material, this limits the further reduction of energy consumption and cost of blast furnace ironmaking to a certain extent.
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[0018] In order to fully understand the purpose, features and functions of the present invention, the implementation of the present invention will be described in detail below with the help of specific embodiments and in conjunction with the accompanying drawings, as follows:
[0019] Direct combustion heating is a way of hot blast heating for ironmaking blast furnaces. It means that the combustible gas from the gas injection device is injected into the hot blast pipe through the injection pipe and burned, thereby increasing the temperature of the hot blast. The hot air whose temperature is raised by direct combustion further enters the blast furnace along the conveying pipeline to continue the subsequent steps of the ironmaking process.
[0020] figure 1 The ironmaking equipment of the present invention needs the implementation flowchart of hot blast stove; The ironmaking equipment described in this embodiment comprises blast furnace 1, hot blast stove 2 and is arranged on th...
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The invention provides an improved blast furnace ironmaking system which comprises a blast furnace (1), a conveying pipeline (3) and a fuel gas injection device (5). Combustion air input by the conveying pipeline (3) and a combustible gas from the fuel gas injection device (5) meet and burn, further the temperature of the combustion air is raised, and the combustion air with the temperature achieving the demand of blast furnace ironmaking enters the blast furnace (1) along the conveying pipeline (3) to continue to the subsequent steps of blast furnace ironmaking. Under the condition that the blast furnace ironmaking system ensures that the hot air conveying temperature of blast furnace ironmaking is effectively raised, the configuration scale of an air heating furnace is reduced, the occupied area is reduced, the investment is reduced, and the unit energy consumption and cost of ironmaking are reduced.
Description
technical field [0001] The invention relates to a blast furnace ironmaking system, in particular to a blast furnace ironmaking system with gas direct combustion function. Background technique [0002] At present, the ironmaking process system is mainly divided into blast furnace ironmaking and non-blast furnace ironmaking. Due to the good technical and economic indicators of blast furnace ironmaking, simple process, large production volume, high labor productivity and low energy consumption, the iron produced by this method It still accounts for more than 95% of the world's total iron production. The blast furnace ironmaking process with hot blast stove is the most widely used ironmaking process in the prior art. In the blast furnace ironmaking process, iron ore, coke, and slagging solvent (limestone) are loaded from the top of the blast furnace during production, and preheated air (hot air) is blown in from the tuyeres located at the lower part of the furnace along the per...
Claims
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IPC IPC(8): C21B5/00
Inventor 邱建宏
Owner BERIS ENG & RES CORP