Arc smelting furnace dust removal device

Abstract

The invention discloses an arc smelting furnace dust removal device, which comprises a dust collecting hood, a ventilation smoke pipe, a double-layer water jacket, an air inlet pipe, a cyclone dust collector, a bag-type dust collector, an induced draft fan and a main controller, wherein the dust collecting hood is arranged above an arc furnace or a smelting hearth, and is connected with the cyclone dust collector through the ventilation smoke pipe, the double-layer water jacket is sleeved outside the dust collecting hood and the ventilation smoke pipe, the cyclone dust collector is connected with the atmosphere through the air inlet pipe, the cyclone dust collector is connected with the bag-type dust collector through a pipeline, the bag-type dust collector is connected with the induced draft fan through a pipeline, and the main controller prevents coarse particles from entering the bag-type dust collector by controlling the flowing speed of smelting flue gas in the device, so that theservice life of a filter bag is prolonged. According to the invention, dust is removed through the cyclone dust collector, so that the air passing area in the bag-type dust collector can be reduced,the pipeline laying length and the device size of the dust removal device can also be reduced, and power consumption of the device is reduced; and the separated dust can be classified and reutilized.

Description

technical field [0001] The invention relates to the field of ore smelting, in particular to a dedusting device for an ore-thermal smelting furnace. Background technique [0002] Silicon metal is widely used in daily life, and it is also a very important and widely used substance in modern industry. The metal silicon in the ore can be extracted by smelting technology. However, the process of smelting metal silicon often produces flue gas containing a lot of dust. If the harmful substances in these dusts are not treated, they will be directly discharged into the air, which will cause environmental pollution. [0003] Cyclone dust collectors and bag dust collectors are often used in the existing dust removal devices for flue gas generated in smelting. If the cyclone dust collector removes dust from the flue gas at a higher speed, it can indeed separate most of the coarse particles in the flue gas, but at the same time, the higher speed will take away the coarse particles tha...

AI Technical Summary

Problems solved by technology

If the cyclone dust collector removes dust from the flue gas at a higher speed, it can indeed separate most of the coarse particles in the flue gas, but at the same time, the higher speed will take away the coarse particles that have not had time to fall

If the cyclone dust collector removes dust from the flue gas at a lower speed, it will result in insufficient centrifugal force so that the coarse particles in the flue gas cannot be completely separated.

If the cyclone dust collector does not completely separate the coarse particles in the flue gas, the dust content will be too high when the flue gas enters the bag filter, which will accelerate the wear of the filter bag in the bag filter and reduce the service life of the filter bag

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