Direct reduced iron water cooling cylinder device

Abstract

The invention discloses a water cooling tube device for direct reduction iron. The water cooling tube device comprises a cooling tube and a spray module, wherein an outer cover tube is sleeved outside the cooling tube; a gap is reserved between the outer cover tube and the cooling tube; a water inlet in which the cooling water sprayed by the spray module enters is arranged on the lateral wall of the outer cover tube; and a water outlet is arranged at the bottom of the outer cover tube. The water cooling tube device has the advantages of being simple in structure, low in cost, high in heat exchange efficiency, less in water consumption, safe, practical and the like.

Description

technical field [0001] The invention mainly relates to the field of mining and metallurgy equipment, in particular to a direct reduced iron water cooling cylinder device. Background technique [0002] Direct Reduced Iron (DRI-Direct Reduced Iron, referred to as DRI) refers to the low-carbon porous material formed by the reduction of fine iron powder or iron oxide in a furnace at low temperature. Its chemical composition is stable and its impurity content is low. Unlike sinter and oxidized pellets that are fed into the blast furnace for ironmaking, most of the direct reduction iron ore is used as raw material for electric furnace and converter steelmaking, which can increase the uniformity of the steel and improve the physical properties of the steel, thereby achieving production The purpose of high-quality steel. Direct reduced iron is not only a substitute for high-quality steel scrap, but also an indispensable high-grade raw material for the production of high-quality ste...

AI Technical Summary

Problems solved by technology

[0007] 1. Low heat transfer efficiency: see figure 1 As shown, the water is sprayed on the outer wall of the cooling cylinder through the water spray assembly. When the cooling cylinder rotates downward, the water also flows downward along the outer wall of the cooling cylinder, and finally flows into the sump

In this case, the contact time between water and the outer wall of the high-temperature cooling cylinder is too short, resulting in low heat transfer efficiency and unable to achieve a good cooling effect

[0008] 2. The consumption of water is large: after the water is sprayed on the outer wall of the cooling cylinder through the water spray assembly, due to the rotation of the cooling cylinder and the water speed, a large part of the water falling on the wall of the cylinder will be splashed, and this part of the splashed water will not Participate in the cooling of the cylinder wall, resulting in an increase in useless water, which in turn causes a large amount of water consumption in the system

[0009] 3. Affect the surrounding environment: Since the water splashes greatly when it falls into the sump, the ground around the cooling tube will be wet and slippery during production, the operating environment is harsh, and the risk factor increases

At the same time, because the water quickly vaporizes into water vapor when it contacts the high-temperature cylinder wall, a large amount of white mist around the cooling cylinder blocks the operator's sight, resulting in frequent safety accidents

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