Abstract. Many copper producing mines, especially older mines, use smelting technologies to produce blister copper or copper anodes for electrorefining. Thus slags are produced which may be ...
The copper smelting process produces plenty of copper slag every year, which is a hazardous solid waste, but a secondary resource. In the present study, the extraction of copper, nickel, and cobalt from copper slag was investigated through the process of sulfation roasting–water leaching and the process of sulfation …
Industrial copper reverberatory furnace slags were treated by high temperature techniques (sulfide and carbothermic reduction) to recover copper in alloy or matte phase at 1473K. …
This research proposed an efficient and environmentally friendly technology for recovering valuable metals from copper flash converting slag. In a reducing atmosphere, pyrite is used as the sulfurizing agent to efficiently and selectively sulfurize and recover Cu, Pb and Zn of copper flash converting slag. Cu of copper flash converting …
A technological scheme for copper slag processing is proposed. It comprises 5 stages, namely: (i) air oxidation of the copper slag at a temperature above 800 °C for 2 h; (ii) hydrothermal treatment of the oxidized slag with sodium hydroxide solution (140 g/l) at 190 °C for 3 h; (iii) separation of the solid from the liquid phase by hot ...
This paper studies the carbon reduction and magnetic separation of copper slag's flotation tailings. The impact of the roasting temperature and alkalinity on the reduction and effect of different size of reduzate on magnetic separation are investigated. The results show that Fe3O4 and fayalite are the main forms of iron among the …
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Copper slag is a major waste produced in pyrometallurgical plants during the smelting and converting operations and has caused heavy environmental contamination. A pyro-hydrometallurgical process for the treatment of copper slag has been developed to accomplish recovery of nickel, cobalt, and copper and reuse of iron …
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Copper slag is a metallurgical waste that is disposed by way of stockpiling at designated dump sites within a mining site. The observed depletion of high-grade iron ores in Botswana and the environmental hazards associated with disposal of untreated metallurgical waste, presents an opportunity for research on secondary sources of iron …
The kinetics of copper slag oxidation under nonisothermal conditions is studied using simultaneous TG-DTA at variable heating rate of slag and flow rate of the oxidizing gas flux.
Converter copper slag can be viewed as an important secondary resource for valuable metals, considering its high commercial value. The current research investigates the …
It is suitable for various copper smelting slags. It has high extraction efficiency, high effect, and low cost for copper smelting slag. It is the best method for extracting copper metal from smelting slag. Beneficiation Principle. The working principle of the copper slag processing production line is to use the physical characteristics of the ...
Currently, metallurgical recycling and further cleaning of copper slag is still not widely established, in spite of the progress in the management of copper slags in the past …
White Pine's total refined copper output is accomplished through fire refining requiring special techniques for impurity removal, especially small amounts of nickel introduced …
The physical characteristics of copper slag make it a suitable substitute for hazardous silica-containing abrasives; however, the occupational risks associated with processing copper slag granules are not fully understood and warrant further investigation to better understand occupational exposures in this industry.
With the shortage of high-quality raw materials and increasingly strict environmental regulations, the recovery of metals from copper slag and pyrolusite has become a research hotspot. A novel method for simultaneously extracting Mn and Fe from pyrolusite and copper slag has been proposed.
Depending on the pyrometallurgical process used, copper slag can be divided into smelting slag, blowing slag, refining slag, and dilution slag. The growth rate in recent years would predict that the output of copper slag will exceed 24 million tons by 2020 ( Fuentes et al., 2020 ).
Aiming at the recovery of copper from smelting slagSmelting slag, a flotationFlotation approach was studied. It was found that this slag composed of fine particles with complex association and distribution, in which bornite was the main copper-bearing mineral after...
Moreover, the flotation kinetic model of copper slag was established and the results showed that the movement of copper slag in the flotation process conforms to the first-order kinetics. The addition of sodium carbonate increased the stability of the pulp and improved the flotation kinetics greatly, resulting in a better flotation performance.
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The tailings slag produced from slag flotation process exhibits a leaching toxicity lower than the USEPA and SEPA regulatory thresholds. This work indicates the copper flash smelting process is promising for the efficient and safe disposition of As via recirculation processing of As-bearing byproducts.
Laboratory and pilot plant investigations have indicated that copper recoveries of 50% can be achieved with fine grinding and flotation of a copper reverberatory furnace slag. Microscopic and microprobe studies indicate that the recoverable copper is in the form of matte, chalcocite, and metallic copper; the …
As a result, potential slag treatment routes including their benefits and drawbacks are proposed. Considering the recent progress in developing for utilization options of copper …
Due to their relatively high average copper content (about 1.5 wt%), a mineral processing plant based on the flotation process has recently been established to produce thousands of tons of Cu-sulfide concentrate after …
The distribution coefficients of Ag, As, Au, Bi, Co, Cu, Ni, Pb, Sb, Se, Te, and Zn between copper matte and slag from the reverb furnace No.2 at the Copper Smelter and Refinery, RTB BOR ...
Abstract: The reconstruction of metallurgical copper production in RTB Bor, replacement of roasting-reverb process with flash smelting technology, is justified both from the ecological aspect as well as from economic aspect. By modernization of the Bor smelter, emissions of sulphur dioxide, dust, arsenic, lead and other pollutants in waste smelter gas streams are …
In order to achieve single recovery of Fe, Cu and Si in copper slag and deep removal of impurities in products, the activated reduction combining directional oxidation are adopted to improve the separation limit of target components, which mineral constituent as well as chemical composition at different stages are investigated through …
Moreover, the flotation kinetic model of copper slag was established and the results showed that the movement of copper slag in the flotation process conforms to the first …
The yield of copper removal from all the slag batches examined was 96–98%. The compositions of the Cu–Pb–Fe alloys and slags obtained in the experiments were acceptable, since the degree of copper and lead removal from the primary slag remained within the limits typically observed for the industrial-scale processing.
The working principle of the copper slag processing production line is to use the physical characteristics of the ductility of the metal copper. The metal copper and the waste slag …
Many copper producing mines, especially older mines, use smelting technologies to produce blister copper or copper anodes for electrorefining. Thus slags are produced which may be reprocessed. The ...
Copper slag is generated when copper and nickel ores are recovered from their parent ores using a pyrometallurgical process, and these ores usually contain other elements which include iron ...
Semantic Scholar extracted view of "Efficient and safe disposition of arsenic by incorporation in smelting slag through copper flash smelting process" by Zhang Huibin et al.
In this paper, a study of processing pyrite cinder and metallurgical slag using a 'one step' technology in strand grate–rotary kiln at a laboratory scale is presented, which aims to recover iron, lead, zinc and copper. The compressive strength of preheated pellets reached 527 N per pellet and the removal rates of copper, lead and zinc reached …
A first law analysis of heat balance for a reverberatory furnace is developed to optimize the performance of a reverberatory furnace, in which, all parameters and compounds that affect the process ...
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A simplified process flowsheet for the recovery of copper from the reveberatory furnace slag using sulphation roasting (i.e., acid baking) and water leaching is shown in Figure 4.
