Blast-furnace ironmaking energy-saving novel process and equipment

A blast furnace ironmaking and new process technology, applied in the field of smelting, can solve problems such as the adverse effects of ironmaking quality and energy consumption, the reduction of melting speed and dripping speed, and the influence of blast furnace air permeability, etc. The effect of improving performance and simplifying the burden of uneven heating and cooling

Inactive Publication Date: 2011-01-26
邹平鑫特铸造科技有限公司
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Problems solved by technology

In addition, in the current blast furnace ironmaking process, the strength of the sintered material is not enough, and it is easy to disperse when it is melted at high temperature in the blast furnace, which seriously affects the air permeability of the blast furnace, thereby adversely affecting the quality of ironmaking and energy consumption, making the melting Reduced speed and drop rat

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  • Blast-furnace ironmaking energy-saving novel process and equipment
  • Blast-furnace ironmaking energy-saving novel process and equipment
  • Blast-furnace ironmaking energy-saving novel process and equipment

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[0029] The technical solution of the present invention will be described in detail below in conjunction with the specific embodiments and the drawings.

[0030] The new energy-saving process for blast furnace ironmaking of the present invention includes a mechanical manufacturing step, a pelletizing step, a direct reduction step, and a vacuum cooling step. The pelletizing step is to use a cantilever ball press to shape the blended iron ore powder It is a mineral powder ball, which can be equally divided into 42 pieces at the same time. This mineral powder ball has an appearance diameter of 1000mm and a height of 200mm (the number of divisions and the size are set flexibly according to specific needs, and are related to specific equipment size and output requirements. The invention is not limited), then the cantilever is rotated 90 degrees and then hydraulically pushed to the trolley pushed out by the circulating direct reduction furnace, and the operation is rotated back and forth...

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Abstract

The invention belongs to the technical field of smelting and relates to a blast-furnace ironmaking technique, in particular to a blast-furnace ironmaking energy-saving novel process and blast-furnace ironmaking energy-saving cantilever ball press equipment. The blast-furnace ironmaking energy-saving novel process comprises the following steps: mechanical manufacturing, ball making, direct reduction and vacuum cooling, wherein the ball making step is to form mixed iron ore powder into uniform ore powder balls; the formed ore powder balls are transported by a trolley to a direct reduction dryer to be reduced directly; the directly reduced ore powder balls are cooled under vacuum; and the ore powder balls are delivered to a blast furnace for high-temperature melting. In the invention, the drawbacks of the prior blast-furnace ironmaking process flow are overcome effectively, special equipment, namely cantilever ball press, is adopted, and the conventional sintering equipment and process are changed, and thus the blast-furnace ironmaking energy-saving novel process is realized.

Description

technical field [0001] The invention belongs to the technical field of smelting, and specifically relates to a blast furnace ironmaking technology, in particular to a new blast furnace energy-saving technology for ironmaking and its equipment—a cantilever briquetting machine. Background technique [0002] At present, blast furnace ironmaking accounts for more than 95% of the country's total production, and they are all completed in blast furnaces with different volumes (the largest is more than 5000m 3 , the smallest is about 125 m 3 ). Nevertheless, their production process and chemical reaction in the furnace are the same. With nearly 150 years of technological improvement, it has gradually improved from the initial nearly 8000Kg coke to smelt one ton of iron to today's 450~650Kg coke to smelt one ton of iron; at the same time, in the sintering process in the previous process, it has gradually improved from the initial open-air sintering Up to today's mechanized sinteri...

Claims

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Application Information

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IPC IPC(8): C21B5/00
Inventor 张向海邢传一
Owner 邹平鑫特铸造科技有限公司
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