Synergetic modification of industrial basic oxygen furnace slag and copper slag for efficient iron recovery. ... the presence of nonferrous metals degrades steel performance and corrodes smelting equipment, and the remaining slag poses environmental and sustainable challenges. ... Oxidative modification of industrial basic …
This paper deals with extraction vis-à-vis recovering of copper using blast furnace slag obtained as a byproduct which has been converted into a cheap adsorbent material.
To recover copper as well as lead the slag is subjected then to a process of decopperization by reducing the oxide metal compounds in an electric furnace. This study presents an alternative to the ...
Flotation is one of the most important methods for recovering copper from copper slag, However, traditional grinding may be over grinding sometimes, resulting in …
The copper recovery in the Mitsubishi CL-furnace in the calculation is relatively low, since no slag reduction is performed with coal or coke addition, meaning that the copper is recovered only by simple melt settling to 0.8% Cu in slag.
Pyrometallurgical production of copper generates two slags: smelting furnace slag and converter slag which contain 0.5-2% Cu and 2-8% Cu, respectively. The following three methods are generally utilized for recovering the copper from these slags on an industrial scale: (i) recycling of the converter slag to the smelting furnace,
A significant source of copper losses from pyrometallurgical copper extraction is attributed to dissolved and entrained copper in discarded slag. Entrained copper can be recovered via pyrometallurgical slag cleaning in a settling furnace, where the slag viscosity and copper droplet size distribution (CDSD) are critical parameters. …
The submerged electric arc furnace (SAF) has proven a versatile unit in numerous metallurgical applications for more than a century. Countless innovations have made this furnace type become the most commonly used furnace for increased metal recoveries and slag-cleaning operations. In many applications, SAFs are also employed …
The domestic methods for treating copper slag are electric furnace dilution and mineral processing. The mineral processing method to recover copper from copper slag has increasingly become indispensable in pyrometallurgical copper smelting due to its high recovery rate, stable production, and low energy consumption.
Copper scrap is treated using reverberatory furnaces for melting anode-grade copper (i.e., 95% Cu by weight) and the blast furnace/converter combination for low grades of copper …
As a widely used slag treatment technique, pyrometallurgy can recover Cu from copper slag at high recovery ratios. However, it is a complex process, consumes …
Secondary copper blast furnace slag was treated with carbon to derive the conditions for maximum recovery of copper with minimum simultaneous reduction of iron oxide.
The maximum recovery of copper in alloy phase was obtained with 5% (by weight) initial carbon in the feed, 2% (by weight) CaO addition to the slag and a …
White Pine reverberatory furnace slags contained economically recoverable amounts of copper for a variety of reasons. Among them: White Pine concentrates yield …
Therefore, copper slag cleaning is a critical process to reduce copper loss and improve copper recovery simultaneously. Copper slag cleaning using the flotation method and/or in an electric furnace is widely adopted in industrial production.[2,3,4,5] The flotation method has the advantages of low energy consumption and low copper content …
A combination of waste acid leaching and CaO roasting methods was investigated to recover copper from refining slags of copper fire anode furnace and other valuable metals. The influences of the leaching temperature, leaching time, liquid-solid ratio, and airflow rate on the recovery rates of Cu, Fe, and As were separately evaluated …
The stirred tank experiments, with increasing slag concentrations from 10 to 75 g/L, resulted in higher extraction efficiencies for A. ferridurans and lower acid consumption. Selective metal precipitation was performed at pH values ranging between 2.5 and 5.0 to study the recovery of Mn, Al, Cr, and V from the biolixiviant.
Recover Copper from Reverberatory Furnace Slag. 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.
The main objective of this research was to recover copper and cobalt from slags coming from copper ... sulphidised in an electric furnace with CaS ratio of 15 wt. %. In essence, sulphidisation which was ... to do part of my experiments from his company where I had the privilege to use some of the equipment.
To recover copper from copper slag, a novel slag cleaning method was proposed. The thermodynamics and binary phase diagram of FeO–SiO2 were calculated…
The slag contents in copper and zinc are comparable to those of the DC electric furnace smelter in the Democratic Republic of Congo. Maweja et al. reported the effects of annealing and leaching conditions on the recovery of copper and zinc from the DC electric furnace slag.
iron recovery from slags BINQ Mining. May 12, 2013 · A process for the recovery of iron from copper slag which ... The 20 Mt reverberatory furnace slag dump at Nkana in Zambia ... banded iron ore flotation;
Low cost and green recycling of titania-bearing slag is an important aspect of the circular economy to ensure the sustainable development of the titanium industry. In this paper, the existing titanium extracting techniques are comprehensively summarized. The principles, advantages, as well as existing problems are clarified in relation to traditional …
To recover metal from copper slags, a new process involving two steps of oxidative desulfurization followed by smelting reduction was proposed in which one hazardous waste (waste cathode carbon) was used to treat another (copper slags). The waste cathode carbon is used not only as a reducing agent but also as a fluxing agent to …
Molten slag exhausted with critically high temperature of about 1450–1550 °C is a potential resource of energy and raw materials.Water quenching is a traditional heat recovery technology, which uses cold water to cool down slag so as to achieve the desired glassy by-products.
A comprehensive review of the methods of copper recovery from slags is presented by Kundu et al., where the authors compare the efficiency and environmental impact of methods of flotation, hydrometallurgy and pyrometallurgy to recover copper from the slags. The variety of methods used in industry and the extensive investigation in new ...
The recovery of iron in copper slag was nearly 90 %, but the addition of solid C increased the cost and carbon emissions, which was not supporting achieving the goal of carbon peak and carbon neutrality. ... The schematic diagram of the experiment equipment (a-Furnace; b-Magnetic separator). Table 3. Oxidation conditions of BOFsp …
Recovery of copper and cobalt from smelter slag using reductive-sulfurizing smelting method was performed in this study. The effects of reductive agent (coke), sulfurizing agent (pyrite), slag ...
The investigation into copper waste slag cleaning has shown that cobalt and copper can be recovered effectively from these slag types, and with a reasonable selectivity compared to iron co-reduction. Base metals recovery from waste slags are dependant on the amount of reductant added or the equivalent oxygen partial pressure.
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