Coal injection device for blast furnace ironmaking

A blast furnace ironmaking and spray gun technology, applied in blast furnace, blast furnace details, blast furnace parts and other directions, can solve problems such as the inapplicability of coal injection equipment, and achieve the effect of ensuring the cooling strength of the furnace lining, ensuring the life of the blast furnace, and simple production

Inactive Publication Date: 2004-09-01
宝钢集团上海梅山有限公司 +1
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  • Abstract
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Problems solved by technology

[0002] The blast furnace ironmaking two-stage pulverized coal injection process (public number CN 00858A) is based on the existing blast furnace ironmaking tuyere coal injection process, and is set in the upper part of the blast furnace reflow zone, the furnace waist or the lower part of the furnace shaft. In the second section of pulverized coal injection gun hole, the pulverized coal is sprayed into the blast furnace with inert gas or compressed air as the carrier through the pipeline, spray gun and the second injection hole. This process can increase the amount of coal injection by 30-50kg / t-P without auxiliary conditions. , is a brand-new coal injection process, but the existing coal injection equipment cannot be applied

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  • Coal injection device for blast furnace ironmaking
  • Coal injection device for blast furnace ironmaking

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Embodiment Construction

[0008] With reference to the accompanying drawings, a blast furnace ironmaking coal injection device suitable for blast furnace ironmaking two-stage pulverized coal injection process method consists of a coal delivery pipeline 15, a date-shaped ball valve 5, a spray gun 3, a check valve 1, a ball valve 2, Compression sleeve 4, high-pressure gas inlet pipe 11 and other components, jujube-shaped ball valve 5 connected to high-pressure gas inlet pipe 11, the center of the spray gun cooling water jacket 7 has a through hole, the side wall is provided with a cooling water cavity, and the head is provided with cooling water The water inlet 8, the cooling water outlet 9, the cooling water cavity communicates with the cooling water inlet 8, the cooling water outlet 9, the head of the spray gun cooling water jacket 7 is fixed on the blast furnace shell 12, and the tail extends into the blast furnace cavity 13 The jujube-shaped ball valve 5 and the spray gun cooling jacket 7 are sealed a...

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Abstract

The invention relates to a blast furnace iron-smelting auxiliary device, in particular a coal spray apparatus for the two-stage type coal spray process for blast furnace iron-smelting, wherein the apparatus comprises a coal chute, a jujube shape ball valve, a spray gun, a check valve, a ball valve, a pressing annular tube, a pressure gas air inlet pipe, wherein the jujube shape ball valve is connected with the pressure gas air inlet pipe, a through-hole is arranged in the center of the spray gun cooling water jacket, a cooling water chamber is arranged on the side wall, the top end is provided with a cooling-water intake port, the cooling water outlet, the cooling-water chamber are connected with the cooling water intake port and the cooling water outlet, the head portion of the spray gun cooling water jacket is secured on the jacket of the blast furnace. The invention can meet the requirements of the two-stage blowing coal powder process and increase coal spray amount.

Description

1. Technical field [0001] The invention relates to an auxiliary equipment for blast furnace ironmaking, in particular to a coal injection device used in a two-stage coal injection process for blast furnace ironmaking. 2. Background technology [0002] The blast furnace ironmaking two-stage pulverized coal injection process (public number CN 00858A) is based on the existing blast furnace ironmaking tuyere coal injection process, and is set in the upper part of the blast furnace reflow zone, the furnace waist or the lower part of the furnace shaft. In the second section of pulverized coal injection gun hole, the pulverized coal is sprayed into the blast furnace with inert gas or compressed air as the carrier through the pipeline, spray gun and the second injection hole. This process can increase the amount of coal injection by 30-50kg / t-P without auxiliary conditions. , is a brand-new coal injection process, but the existing coal injection equipment cannot be applied. 3. Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00C21B7/00
Inventor 刘代德沈峰满朱蒙沈岩松
Owner 宝钢集团上海梅山有限公司
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