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Copper smelting slag treatment method

A processing method and technology for smelting slag, which is applied in the field of resource utilization of copper smelting slag, can solve problems that need to be improved, and achieve the effects of reducing processing costs, easy promotion, and low cost

Active Publication Date: 2016-02-24
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the current copper smelting slag treatment methods still need to be improved

Method used

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  • Copper smelting slag treatment method
  • Copper smelting slag treatment method
  • Copper smelting slag treatment method

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Embodiment 1

[0059] refer to figure 1 with figure 2 , according to the copper smelting slag processing method of the present invention, process copper smelting slag, specifically as follows:

[0060] First, the just discharged 3t copper smelting slag (Fe / SiO 2 =1.3, Cu: 1.2%, CaO: 4.5%, Al 2 o 3 4.1%, MgO: 2.7%) into the depleted electric furnace (400kVA) from the slag return launder, then add 600kg of limestone into the depleted electric furnace as a slagging agent, and at the same time, inject 60kg of coal from the top of the depleted electric furnace with a spray gun powder, the injection time is 3h, clarification is 0.5h after the injection, the slag temperature is controlled between 1250-1300°C, and the primary slag and blister copper components are sampled and analyzed (Table 1); after the primary slag is discharged from the bottom of the depleted electric furnace Then return to the depleted electric furnace for deep reduction operation (i.e. carry out the second reduction treat...

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Abstract

The invention discloses a copper smelting slag processing method. The method comprises the following steps: mixing copper smelting slag with a first slag forming agent and a first reducing agent, and carrying out first reduction treatment in order to obtain copper and first smelting slag; mixing the first melting slag with a second slag forming agent and a second reducing agent, and carrying out second reduction treatment in order to obtain iron and second smelting slag; and sequentially carrying out heat insulation and silk making treatment on the second smelting slag in order to obtain inorganic fibers. The method can effectively recover copper and iron from the copper smelting slag, and has the advantages of simple process, less energy consumption, low cost, high treatment efficiency and high byproduct utilization value.

Description

technical field [0001] The invention relates to the technical field of resource utilization of copper smelting slag, and in particular, the invention relates to a copper smelting slag treatment method. Background technique [0002] Due to the long-term mining of the world's copper mineral resources, the primary resources are gradually scarce. The development and utilization of secondary resources is an important way for the non-ferrous metallurgical industry to achieve sustainable development. Copper smelting slag is an important secondary resource of copper. It has become the consensus of experts and technicians to increase the recovery rate of copper smelting, reduce the copper content in waste slag, and recover other valuable metals from it, so as to realize the full resource utilization of copper smelting slag. . [0003] However, the current copper smelting slag treatment methods still need to be improved. Contents of the invention [0004] The present invention has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/04C22B15/00C21B15/00
CPCY02P10/143Y02P10/20
Inventor 唐续龙黎敏马明生尉克俭邬传谷
Owner CHINA ENFI ENGINEERING CORPORATION