Material-spraying device for iron-smelting furnace interrupted front molten iron pre-treatment

Abstract

The molten iron pretreatment spraying device in front of the ironmaking blast furnace belongs to the facility for the pretreatment of molten iron in the ironmaking blast furnace in the metallurgical industry. It includes a mobile device, a sprayer, and a track. The mobile device is set on the track. A sprayer is fixedly arranged on the top, the mobile device is a metal welding frame, a fixture is fixedly arranged on the metal welding frame, and a sprayer is arranged on the fixture. The invention can reduce the flow density of sprayed powder, improve the effective utilization rate of desiliconization agent, and reduce the loss of desiliconization agent; through the desiliconization test of hot metal in front of No. 4 blast furnace of Shanxi Taigang Stainless Steel Co., Ltd., the loss of desilication agent From about 20% to about 10%, the effective utilization rate of desiliconization agent has increased by 20%.

Description

Technical field: [0001] The invention belongs to a facility for hot metal pretreatment in front of an iron-making blast furnace in the metallurgical industry. Background technique: [0002] The equipment for the pretreatment of the molten iron injection method before the iron-making blast furnace in the metallurgical industry includes an injection station set beside the tapping place in front of the blast furnace and a spray gun set above the iron ditch in front of the furnace. The spray gun consists of a gun barrel and a nozzle on the gun barrel. The nozzle is flat and rectangular, and the spray gun is fixed on the bracket. [0003] The shortcomings of the above-mentioned devices are as follows: 1. The spraying powder flow density is relatively large, the reaction area between the desiliconizing agent and molten iron is small, and the effective utilization rate of the desiliconizing agent is low; [0004] 2. The spray gun and the molten iron are in a vertical state, and the spra...

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Problems solved by technology

[0003] The deficiencies of the above-mentioned device are as follows: 1. The flow density of the sprayed powder is relatively large, the reaction area between the desiliconizing agent and molten iron is small, and the effective utilization rate of the desiliconizing agent is low;

[0004] 2. The spray gun and the molten iron are in a vertical state, the spraying and splashing are relatively large, and the loss of the desiliconizing agent is relatively large;

[0005] 3. The bracket mechanism for installing the spray gun is huge and heavy, and the installation cost is relatively high

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