A pure oxygen smelting furnace and its application method

A smelting furnace, pure oxygen technology, applied in the field of boiler smelting, to achieve the effect of increasing reducibility, accelerating indirect reduction efficiency and indirect reduction degree, and improving combustion efficiency

Active Publication Date: 2021-08-06
王立臣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the metallurgical industry at home and abroad mainly reduces the blast furnace CO by reducing the total energy consumption of the process. 2 Emissions, but do not change the fuel structure of the blast furnace, only rely on the improvement of process and equipment to reduce CO 2 emissions are very limited

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  • A pure oxygen smelting furnace and its application method
  • A pure oxygen smelting furnace and its application method
  • A pure oxygen smelting furnace and its application method

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Embodiment Construction

[0031] Attached below Figure 1-3 The pure oxygen smelting furnace of the present invention and its use method are described in detail.

[0032] A pure oxygen smelting furnace, the pure oxygen smelting furnace includes a furnace body and an automatic control system, wherein, the furnace body is fixedly arranged on the ground, the furnace body is a hollow structure and is built from top to bottom in the furnace body And the bottom is provided with preheating section, reduction reaction section, melting reaction section in turn; A smoke exhaust port 3 for exhausting smoke; a molten pool 10 is arranged in the melting reaction section, and a combustion chamber 6 communicating with the molten pool is fixedly installed on the upper peripheral wall of the molten pool, and the bottom center of the molten pool is also provided with a The effusion pool 7; the effusion pool is a bowl-shaped structure; the bottom of the melting pool is provided with a slag outlet 11; the bottom of the ef...

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Abstract

The invention relates to a new type of pure oxygen smelting furnace and its use method, including a furnace body and an automatic control system. The furnace body is fixed on the ground. There is a preheating section, a reduction reaction section, and a melting reaction section; above the preheating section, there is a feed port for adding at least one of raw material ore, coal, and coke, and a smoke exhaust for exhausting smoke There is a molten pool in the melting reaction section, and the upper peripheral wall of the molten pool is fixedly provided with a combustion chamber connected to the molten pool, and a effusion pool is also provided in the center of the bottom of the molten pool; the automatic control system includes PLC controller, flow detection and Adjusting device, oxygen / fuel ratio setting device. It has the characteristics of reasonable structural design, stable and reliable operation, energy saving and environmental protection, low operating cost, and a relatively high degree of automation. It can not only improve smelting efficiency, but also effectively reduce the emission of carbon dioxide and other pollutants.

Description

technical field [0001] The invention relates to the technical field of boiler smelting, in particular to a pure oxygen smelting furnace and a use method thereof. Background technique [0002] Usually, iron ore smelting often adopts the blast furnace smelting method, which mainly sends ore, coke, and flux from the top of the blast furnace into the blast furnace through the feeding device, and the high-temperature air of about 1200 ℃ preheated by the blast furnace hot blast stove and Coal powder is sprayed into the blast furnace from the tuyeres on the upper part of the hearth, and the ore is preheated, reduced and melted under high temperature, and finally turns into metal molten iron, which is discharged from the blast furnace taphole. The hot air provided to the blast furnace by this smelting method is pressurized and heated air, and the useful oxygen in the air accounts for less than 21%, and when adding 3% oxygen to the oxygen-enriched coal injection, the sum of the two i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/00C21B7/00
CPCC21B5/00C21B5/003C21B5/006C21B7/00C21B2005/005
Inventor 王立臣
Owner 王立臣
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