NOUFERROUS METALLURGICAL EQUIPMENT

The anode sludge produced during the copper electrolytic refining process, in which precious and rare metals can be extracted, has important economic value. Based on the problems existing in the copper anode sludge roasting process of a smelting enterprise, such as insufficient pretreatment, uneven feeding, large fluctuation of negative pressure at the end of the kiln, easy deformation of the kiln body, and excessive pressure in the jet pump, combined with the EMERSON-DeltaV DCS control system, optimization measures were proposed, such as adjusting the dense pressure filtration method, increasing DCS interlock control of the anode slime tanks liquid level, establishing liquid level interlock between the anode slime tank and the feed tank, adding negative pressure delay protection, improving fuel usage in the heating system, and adding vacuum pump sensors. After these improvements, the daily processing capacity of the rotary kiln for copper anode slime had been increased, the working environment had been improved, energy consumption had been reduced, the labor intensity of workers had been reduced, production costs had been effectively lowered, and equipment lifespan had been extended.