Comprehensive recovery technique of zinc vertical retorting residue
A technology for smelting zinc and vertical cans, applied in the field of comprehensive recycling of non-ferrous metal smelting, can solve the problems of short furnace life, many equipment, long process, etc., and achieve the effect of saving production cost, simple process and optimized combination.
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[0021] Example 1
[0022] See attached for the comprehensive recovery process of vertical tank zinc smelting residues image 3 .
[0023] Zn
[0024] The vertical pot zinc smelting residue contains 1% zinc (Zn1%). The recovered P·S converter slag contains Cu5%, Zn1.6%, Pb0.3%,
[0025] Fe45.9%, SiO 2 26.9%. Flux Quartz contains SiO 2 85%, limestone contains 50% Ca. The copper concentrate contains Cu23%, Zn3%, S26.5%, and Pb2%.
[0026] 1. Ingredients: Zinc smelting residue, copper concentrate, limestone, quartz stone and converter slag in vertical tanks are stored in their respective feeding bins. Each bin is equipped with a weight-controlling feeder to adjust the discharge speed. The ingredients: vertical Pot-smelting zinc residue, copper concentrate, limestone, quartz stone and converter slag account for 17%, 5.4%, 2.2% and 8.8% of the copper concentrate respectively by weight. The copper concentrate is first run into the mixer and mixed with water (to prev...
Example Embodiment
[0029] Embodiment 2
[0030] The difference between Example 2 and Example 1 is that the zinc smelting residue in the vertical tank contains 6% zinc, and the flow rate of the spray gun during smelting: air 32700Nm 3 / h, oxygen enrichment 11300Nm 3 / h, flue gas discharge 54500Nm 3 / h. Its temperature is 1210℃, and the dust content of lead and zinc enriched flue gas is 45g / Nm 3 , the soot contains 39.1% lead and 16.3% zinc, the others are the same.
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