High-temperature furnace dust removal system, including the capture of secondary smoke, and dust content of flue gas purification. Types of dust removal equipment, performance and quality, continuous improvement and perfection, the focus of domestic small and medium sized (30t or less) high-temperature furnace dust mainly in the choice of baked flue gas capture mode, a direct impact on the size of the flue gas capture rate to the steel making workers work environment and mental health. State regulations, the concentration of dust in the workshop should not be less than 10mg/Nm3, the noise should be less than 85dBA. In fact steelmaking the concentration of dust in the workshop were treated to more than 300mg/Nm3 noise up to 95dBA, steelmaking dust the sight of the crane work, cause some risks to the safety in production. More types of small and medium-sized high-temperature furnace soot trap cover, compare the following soot trap cover: 
 (1) side of the suction cover such a simple trap cover production to deal with the medium of the air volume, trapping smoke only in the smelting works, feeding time can not trap dust, add oxygen during the low soot trap, can only reach 60 - 70%. Capture hood from the high temperature flue gas closer, it is prone to burning the Toi phenomenon. 
 (2) clamp cover if water quality is not good only about three months, some hidden. Clamp cover the use of lower life. And trap the dust temperature is high, also lightly occurred burn Toi phenomenon. Closely on the electrode hole, clamp cover produced slightly more complex than the side of the suction hood. Capture rate than the side of the suction hood is higher. Restricted due to cover the area and volume of the suction, the thermal deformation of Oxygen to prepare for the capture rate can only reach 70% due to the trap cover away from the flame too close. To set the cover on the cooling device, such as the maintenance is not timely, lightly leak formed on the insurance production 
 (3) roof cover its dust trapping rate is difficult to achieve 80% to the wind. To facilitate the replacement of the electrode, the roof cover installed on the top of the high-temperature furnace. Cover hypothetical to change the swing cover, does not influence the smelting manipulation. The roof cover of smoke and dust trapping rate, usually because of the roof cover a certain distance (about 2m above) away from the lid so vulnerable to cross-oxygen blowing dust trap is higher than the first two trapping hood. This cover pleading system air flow. 
 (4) roof cover Oxygen dust capture rate of only 6070% you. And roof cover more vulnerable to the horizontal winds. Does not affect the manipulation of high-temperature furnace smelting. This trap cover far away from the high-temperature furnace, the roof of a large cover of dust and smoke in the high-temperature furnace smelting process can play a role in trapping. Only the dust picked up roof cover talent to play a trapping role of the hood near the mouth. Belonging to accept the capture hood. Ultra-low temperature flue gas during the ascent, there have been cold air mixed with the one hand, the decrease of the flue gas temperature, and with the recovery in the flue gas, on the other hand, added a total dusty gas. Evacuation increasing the scope of the trap cover cover mouth area increases, is required for the disposal of the dust removal system so that the dust collector filter area, the pipe diameter, system power consumption greatly increased. The roof cover is an investment in a high temperature furnace dust way the wind than other capture hood. 
 (5) mobile semi-airtight cover from cost point of view is a good investment. The disadvantage is that the feed and steel can not trap dust. Mobile semi-closed hood system used in air flow and equipment investment are relatively modest. High-temperature furnace in the steel and change the electrode operation, the mobile semi-airtight cover the fixed cover and move the cover. Move the cover is opened to facilitate the operation. High-temperature furnace smelting is, move the cover closed. Mobile and semi-closed cover in the melting of the oxidation of reply to the revival of effective trap operation, the capture rate of up to 95% or more, high-temperature furnace plant over but not smoke, and can also play a landing high-temperature furnace smelting noise probation. , Basically does not affect the high-temperature furnace manipulation. Waterfall fire or molten steel in the splash thing, this trap cover can also play a insurance protection Probation. 
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