Extraction systems are generally specified for the operation of induction furnaces. In the case of crucible furnaces, so much smoke and dust is created directly in front of the furnace when charging and producing nodular cast iron that extraction systems are essential. For a 5-tone furnace, an integral hood extraction system with cover is required with an extraction capacity of approx. 10,000 Nm3/h. In the case of a separate hood, which is swung over the furnace, approx. 15,000 Nm3/h and corresponding flow speed measures must be taken.
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