It is said that electric furnaces usually generate dust as much as 400K tons – 500K tons annually in Japan and the volume contains zinc for around 20% in average. The zinc component weighs 80K tons -100K tons .As when disposed in Japan the dust from electric furnaces is classified as specially-controlled industrial waste defined in Waste Disposal & Public Cleaning Law, Domestic zinc smelters would claim disposal cost of around JPY20K/ton.
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