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In some plants, flash smelting furnace slag (1.6– 2% Cu) and converter slag (5–7% Cu) are cleaned in an electric arc furnace, where coke is used as reductant and copper content of waste slag ...
The technical feasibility of recovering copper, nickel, and cobalt from smelting and converting slags using Ausmelt's top-submerged lancing process has been …
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 …
Curing the slag with strong sulphuric acid, without re-smelting or roasting as practiced currently in the industry, render it accessible to leaching, and more than 95% of cobalt and up to 90% of copper was extracted together with iron by waterLeaching, leaving silica behind in a residue.
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 …
Factors influencing base metal recovery from waste reverberatory furnace slags Titania is also classified as an amphoteric oxide, depending on its concentration in the slag and the ratio of other network formers and network modifiers in the slag. CaO has a higher affinity for SiO 2 than FeO has, according to Sommerville et al. (1982). Therefore, when it is …
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 …
Outotec Direct Blister Flash Smelting for copper With this process, blister copper is produced directly in a flash smelting furnace without the need for separate converting …
ABSTRACT 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 …
DC-arc furnace technology has been successfully applied to the recovery of cobalt, nickel, and copper from non-ferrous furnace and converter slags. Pilot-plant testwork at Mintek has demonstrated recoveries of …
The blast furnace smelting process for vanadium titania-magnetite is shown in Fig. 1.The low concentration of TiO 2 with about 1.5 wt.% in the primary mineral can be enriched into titania-bearing slag with more than 20 wt.% TiO x, 29,30 as shown by the composition range in Table I; other oxides including CaO, MgO, SiO 2, and Al 2 O 3 are …
the recovery of copper from reverberatory furnace discard slags. Key words: Copper recovery, Blast furnace slag, Reduction process, Smelting Introduction Copper blast furnaces are employed in the pyrometal lurgical treatment of low-grade copper concentrates. The function of the blast furnace is to economically smelt
The three converter slag samples used in the investigation were obtained from a western smelter. Chemical analyses of the respective slags are presented in table 1. Slag sample A, which contained 1.6 percent copper, …
The typical phase composition of copper slags is summarised in Table 2.Many variations in the phase composition of copper slags can be observed because of some factors related to the pyrometallurgical process, such as characteristics of the copper mine processed, type of furnaces applied, type of additives (or flux) added, and type of …
As the world's largest producer of refined copper, China accounts for about 1/3 of the world's production. At present, China's refined copper is mainly produced by pyrometallurgy [1,2,3].The annual discharge of copper slag exceeds 10 million tons according to the calculation of 2.2 tons of copper slag per ton of refined copper …
During ISA copper smelting process, ISASMELT furnace discharges a large amount of matte and slag mixture and the separation of them has an important influence on the recovery of valuable metals. This paper presented a reduction-sulfurization sedimentation process for recovering copper and cobalt from the matte–slag mixture …
Abstract. In the paper, a new technology was developed to improve the beneficiation of copper and iron components from copper slag, by modifying the molten slag to promote the mineralization of …
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 …
Materials. The smelting slag used in this study was obtained from a copper plant in China. Mineralogical analysis, performed using scanning electron microscope (SEM) and energy dispersive X-ray spectroscope (EDS), polarizing microscope and X-ray diffraction (XRD), indicated that fayalite (Fe 2 SiO 4) and magnetite (Fe 3 O 4) phases …
Waste electrical and electronic equipment (WEEE) represents a significant urban resource for precious metals. To maximize the recoveries and sustainable use of these metals, their behavior needs to be characterized in the secondary copper smelting of WEEE. The current study experimentally determined the distributions of gold, silver, …
The Matte Settling Electric Furnace (MSEF) is capable of processing copper matte, various converter slags, reverts from different sources and coke to …
Several researchers have investigated the possibilities of recovering copper from discarded copper slag. Gravity concentration, froth flotation, roasting and …
Recovery of valuable metal from copper electric furnace slag (CEFS) is of great interest for saving minerals and reducing pollution. XRF, XRD, mineral liberation analysis (MLA), and batch tests were conducted to investigate the mineralogical and recovery of copper and iron from CEFS. Based on the mineralogical characteristics, a …
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 …
Copper slag is an acid slag mainly composed of Fe 2 SiO 4 and CaFeSi 2 O 6, which is classified as solid waste in the copper smelting industry (Li et al., 2019). In China, 2.2–3.0 tons of copper slag were produced per ton of refined copper, and tens of millions of tons of copper slag were released into the environment every year (Zhou et …
environmental acceptability. This paper examines the potential for cobalt recovery from slags, and outlines various process options. KEYWORDS . Africa, Cobalt, Copper, Furnace, Hydrometallurgy, Pyrometallurgy, Recovery, Slag, Smelter . INTRODUCTION . Cobalt has had a number of important uses in society since antiquity, and its principal …
The flotation process is relatively efficient only for the recovery of copper sulphide and mechanically entrained metallic copper from a slow cooling copper slag; …
Global copper slag (CS) emissions reached 57.2 million tons in 2021. Despite the increasing reuse of CS, the treatment of CS is still dominated by landfill so far, which not only occupies land ...
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. Experiments were carried out to study the effects of parameters such as temperature, carbon addition and CaO addition to the slag on the efficient recovery of copper. A two …
Electronic goods are a major consumer of many critical metals, including copper, nickel, tin, zinc, lead, and precious metals. The processing of end-of-life electronic equipment (E-Scrap) is becoming …