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Precious Metal Recovery Electric Arc Furnace

     

The precious metal recovery electric arc furnace is a metal smelting furnace adopting DC (direct current) electric arc furnace technology, designed for the recovery and enrichment of precious metals from deactivated precious metal catalysts with silica-alumina carriers, precious metal-bearing tailings and smelting slag.

An openable curved exhaust hood is installed at the top of the furnace body. The hood consists of two symmetric left and right halves, which can be rotated towards each other to splice and form a hermetic seal. A screw conveyor is arranged above the furnace body, with its discharge port directly aligned with the furnace top. An exhaust duct is set above the opening-closing joint of the two halves of the curved exhaust hood, and the duct is connected in sequence to a dry quench tower, a bag dust collector, an induced draft fan and an exhaust stack.

Through material pretreatment and batching, the process improves the metal capture rate and the quality of the silicate glass phase in the furnace slag, making the slag meet the raw material standards for Portland cement and slag wool. It realizes the comprehensive recovery of both precious metals and catalyst carriers, and achieves the compliant disposal of hazardous solid waste.

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