Treatment device and treatment process applied to slag recycling

A technology of processing technology and processing device, which is applied in the direction of photography technology, photography auxiliary technology, process efficiency improvement, etc., can solve the problems that can not fully achieve resource utilization, and achieve the benefits of flue gas treatment, low copper content, and flue gas less effect

Active Publication Date: 2021-11-26
上海中川国宇环境有限公司
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Problems solved by technology

However, in the past, copper sand was generally disposed of by the cupola process, which could not fully achieve the purpose of resource utilization

Method used

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  • Treatment device and treatment process applied to slag recycling

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Embodiment Construction

[0023] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0024] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0025] Such as figure 1 As shown, according to a preferred embodiment of the present invention, a processing device applied to slag recycling can be used to process copper sand separated from slag generated after municipal solid waste incineration. The processing device mainly includes oxygen-enriched side-blown Melting furnace, electrolysis system and acid system, etc. The oxygen-enriched side-blown smelting furnace inc...

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Abstract

The invention discloses a treatment device and a treatment process applied to furnace slag recycling. The treatment device is applied to treatment of copper sand. The treatment process mainly comprises the steps of 1, a smelting raw material preparation process, 2, a smelting process of copper matte and crude copper, 3, an acid-making process, and 4, an anode copper refining and electrolysis process. In the step 1, according to the requirement of furnace components, copper sand is mixed with limestone and fluorite solvents in a certain proportion to prepare a smelting raw material; in the step 2, the smelting raw material is smelted into the copper matte and the crude copper in sequence through a crude smelting furnace of an oxygen-enriched side-blown smelting furnace; in the step 3, heat exchange cooling, dust removal and pressurization are performed on flue gas generated by the oxygen-enriched side-blown smelting furnace by an acid-making system to prepare an acid product; and in the step 4, the crude copper is refined into anode copper through a refining furnace, and precious metal is electrolyzed and separated out through an electrolysis system. Therefore, the treatment process can be used for extracting high-purity precious metals such as copper, gold and silver from furnace slag generated after incineration of municipal solid waste so as to realize resourceful treatment of the furnace slag.

Description

technical field [0001] The invention relates to the field of municipal solid waste incineration treatment, in particular to a treatment device and a treatment process applied to slag recycling. Background technique [0002] At present, domestic waste incineration power generation is the best way to reduce, recycle and harmless waste. The waste incineration power generation treatment of municipal solid waste is characterized by a significant reduction effect. After waste incineration, the volume can be reduced by 90%, but 20% to 25% of slag will still be produced after waste incineration. [0003] This part of slag is mainly a heterogeneous mixture composed of stones, sand, glass, ceramics, lime soil and a small amount of unburned garbage. After crushing and sorting, the slag has stable chemical properties, good durability and high strength. . [0004] During the subsequent sorting process of slag, we can separate a small amount of copper sand from some sorting equipment (m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B15/14C22B11/02C25C1/12
CPCC22B7/04C22B7/001C22B15/006C22B11/023C25C1/12Y02P10/20
Inventor 李磊李运杰韦永庆李亮
Owner 上海中川国宇环境有限公司
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