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Method for treating copper-lead-tin-zinc-nickel-containing multi-metal industrial solid waste through oxygen-enriched side-blown chaotic stirring molten pool smelting furnace
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A technology of molten pool smelting furnace and industrial solid waste, applied in the direction of improving process efficiency, can solve problems such as affecting the quality of electrolytic copper, and achieve the effects of improving smelting efficiency, improving metal recovery rate, and improving the content and purity of metal elements
Active Publication Date: 2021-05-28
KUNMING UNIV OF SCI & TECH
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If the black copper slag is returned to the smelting furnace of the copper smelting process, it will undoubtedly cause a vicious cycle of arsenic, antimony and bismuth, which will seriously affect the quality of electrolytic copper
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Embodiment 1
[0064] Use electronic waste, black copper slag and tin middlings as multi-metal industrial solid waste containing copper, lead, tin, zinc and nickel, and control the multi-metal industrial solid waste containing copper, lead, tin, zinc and nickel, including the following elements: Cu 15.4%, Ni 1.6%, Sn 8.1%, Pb 4.5%, Zn3.6%, Fe 14.1%, Si 11.7%, Ca 4.1% and Al 5.8%; the particle size of industrial solid waste containing copper, lead, tin, zinc and nickel is 50mm, and the moisture content is 6%;
[0065] Flux is FeS 2 and CaO(FeS 2 The mass ratio of CaO to CaO is 0.8:1), and the mass ratio of flux to copper-lead-tin-zinc-nickel polymetallic industrial solid waste is 0.21:1;
[0066] The fuel is the waste cathode of the aluminum electrolyzer, and the element composition of the fuel includes: C 66.54%, F 9.6%, Na9.76%, CaO 3.63% and Al 2 o 3 6.9%; the mass ratio of fuel to polymetallic industrial solid waste containing copper, lead, tin, zinc and nickel is 0.06:1;
[0067] Mix...
Embodiment 2
[0071] Use electronic waste, black copper slag and copper mine as multi-metal industrial solid waste containing copper, lead, tin, zinc and nickel, and control the multi-metal industrial solid waste containing copper, lead, tin, zinc and nickel, including the following elements: Cu 16.3%, Ni 2.2%, Sn 7.5%, Pb 4.3%, Zn4.1%, Fe 15.2%, Si 12.9%, Ca 5.7% and Al 7.3%; the particle size of industrial solid waste containing copper, lead, tin, zinc and nickel is 60mm, and the moisture content is 5%;
[0072] Flux is FeS 2 and CaO(FeS 2The mass ratio of CaO to CaO is 1.1:1), and the mass ratio of flux to copper-lead-tin-zinc-nickel polymetallic industrial solid waste is 0.26:1;
[0073] The fuel is waste tires, and the element composition of the fuel includes: C 84.65%, H 6.35%, S 1.71%, N0.39% and O1.44%; the mass ratio of the fuel to the polymetallic industrial solid waste containing copper, lead, tin, zinc and nickel is 0.08: 1;
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Abstract
The invention belongs to the technical field of industrial solidwaste treatment, and particularly relates to a method for treating copper-lead-tin-zinc-nickel-containing multi-metal industrial solid waste through an oxygen-enriched side-blown chaotic stirring molten poolsmelting furnace. According to the method, the copper-lead-tin-zinc-nickel-containing multi-metal industrial solid waste is subjected to oxygen-enriched side-blown chaotic stirring molten poolsmelting, heat and mass transfer in the reaction process is enhanced, the smelting efficiency is improved, copper and nickel elements in raw materials can be enriched in a sulfide or metal state, meanwhile, trace precious metal elements in electronic waste are recycled through the strong affinity of generated molten matte to precious metal and are jointly deposited on the lower portion of melt, and the metal recovery rate is increased; under the oxygen-enriched side-blown chaotic stirring condition, the smelting temperature is matched, and tin, lead, arsenic, antimony, bismuth and zinc contained in the copper-lead-tin-zinc-nickel-containing multi-metal industrial solid waste are volatilized to enter smoke so as to be separated from the molten matte; and toxic and harmful organic matter in the copper-lead-tin-zinc-nickel-containing multi-metal industrial solid waste and fuel is decomposed and converted into non-toxic substances at the high temperature, and slag is harmless.
Description
technical field [0001] The invention belongs to the technical field of industrial solid waste treatment, and in particular relates to a method for treating multi-metal industrial solid waste containing copper, lead, tin, zinc and nickel in an oxygen-enriched side-blown chaotic stirring molten pool smelting furnace. Background technique [0002] Polymetallic industrial solid waste has the characteristics of complex ore phases and low-grade valuable metals. It is difficult to realize low-cost and high-efficiency resource utilization of it. The grades of valuable metals are low, and their respective recycling processes have the problems of difficult processing and high cost. [0003] Electronic waste is mainly composed of metal, plastic and glass, and its metal content is as high as 50wt.%. Chinese patent application CN110184462A discloses a method for smelting electronic waste. After mixing electronic waste, slagging agent and fuel (coke / coalpowder), they are put into an oxy...
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