The slag of copper smelting furnace slag often contains 1–2 % copper, and due to high production volume of slag, copper recovery from it becomes essential. Copper can exist in the smelting furnace slag in three forms: oxide, sulfur compounds and copper metal.
A study on the recovery of copper, cobalt, and zinc from copper smelter and converter slags by roasting with sulfuric acid has been conducted. Acid roasting of slags followed by hot water leaching was carried out to bring the metal values into solution.
discarded slag from the smelter. Discard slag may contain 0.5-0.7% copper and is frequently used as construction material or for sandblasting. Leaching processes produce residues while effluent treatment results in sludges which can be sent for metals recovery. The smelting process typically produces less
Keywords: Reduction, Copper slag, Byproduct, Copper smelters, Iron recovery, Zero waste Introduction The ﬂash smelting process has been used in Chilean copper industry for a number of years already. The high copper content in the produced slag in this process requires further processing in a cleaning furnace.
Copper smelting slag is produced from copper pyrometallurgy (both smelting and converting stages), usually grading at 0.3-3%. The slag may also contains lead & zinc minerals like galena, sphalerite. Copper mainly dwells in the slag in the form of bornite, chalcocite, chalcopyrite, and metallic copper.
12.3 Primary Copper Smelting 12.3.1 General1 Copper ore is produced in 13 states. In 1989, Arizona produced 60 percent of the total ... Because copper has a higher affinity for sulfur than oxygen, the copper in the slag (as copper oxide) is converted to copper sulfide. The copper sulfide is removed and the remaining slag is discarded.
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 modifier (CaO) and smelting temperature and duration on the extractive efficiencies of Cu, Co and Fe …
With the depletion of mineral resources, more attention is paid on the secondary resources to recover valuable metals. In this paper, a research is carried out to recover copper and iron from copper smelting slag by flotation and magnetic separation.
Waste Copper Scrap Recycling Recycling of copper scrap greatly reduces natural resource exploration as an alternative source of copper metallurgy and has big advantage in investment, production cost and off-gas treatment, thus making the copper scrap smelting projects remunerative.
replaced some conventional copper smelting processes in Chile. The high copper content in the slag in this process, require a further cleaning in an electric furnace. Also, the converter and fire refining slag are recycled to the smelting process to increase the matte grade.
Smelter copper slag contains significant concentrations of several potentially toxic elements, including arsenic, lead, cadmium, barium, zinc and copper. ... The recovery of copper from the copper slag increased with an increase in the quantity of acid. The reaction was carried out with no water addition.
the recuperation of copper from slags. Suggested strategies for cleaning the slag are flotation [5, 6], leaching, electric heater and so on . Copper smelting techniques may be used [5, 8-11]. There are also some hydrometallurgical methods given in the literature for the treatment of slags, such as leaching in nitrate, perchloride, chlorate and D
carded slag from the smelter. Discard slag may contain 0.5–0.7% copper and is frequently used as construction material or for sandblasting. Leaching processes produce residues, while ef-fluent treatment results in sludges, which can be sent for metals recovery. The smelting process typically produces less than 3 tons of solid waste
Copper Smelting Slag Recycling Processing Line - frjig. The copper smelting slag recycling line is the recovery line about copper granules from copper smelting slag, so crushing, vibrating screening, . Recovery of Copper from the Slag of Khatoonabad Flash,
Improving Copper Recovery from Production Slags by Advances Stirring Methods Proceedings of EMC 2011 3 treated in the existing copper extraction route or separately in a subsequent reactor the slag phase can be used as construction material for example. 1.2 Conventional pyrometallurgical copper slag …
The recovery of copper from copper smelter slag utilizing flotation has been studied. A copper smelter slag from the Wang Jiaqiao smelter in Yunnan Province of china, containing 2.76% Cu, 44.41% Fe, 2.34% Zn and 18.4g/t Ag and so on, has been used .The effective factors such as grinding fineness, pH, and the dosage and type of collector were examined.
Copper smelting slag is the solid waste generated during pyrometallurgical production of copper from copper containing ores. Depending on the nature of the copper ore and the limitations of the smelting technology employed, most of the copper smelting slag contains certain amount of
the approximately 1/3 of the copper content in the smelting concentrate. for Therefore, the recovery of the copper from this slag has a practical importance and heavily influences the operational costs. A part of the copper in the slag is in form of fine inclusions suspended in the slag; however, the majority of the copper is dissolved in it.
Sep 06, 2017· Iron Recovery from Discarded Copper Slag in a RHF Direct - MDPI. Nov 3, 2016 At present, copper production in China mainly comes in a pyrometallurgical process. separation process for iron recovery from copper slag, Yang  obtained iron domestic copper smelting plant as …
Recovery of copper from smelting slag by sulphation roasting and water leaching 411 Materials and experimental methods Experiments were conducted using a reverberatory furnace slag from the Bor Copper Concentrator, Serbia. The slag was sampled from the crushing line before entering the milling section of the concentrator.
Abstract: Copper smelter slag and copper smelter slag flotation tailings were leached using sulphuric acid solutions, without or with the addition of either ferric sulphate or hydrogen peroxide. Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings.
Recovery of Copper and Cobalt from Copper Slags as ... zinc and copper from copper smelter slag at atmospheric pressure . Roasting of the slag with sulfuric acid  has metal values in solution. In the ... Recovery of Copper and Cobalt from Copper Slags as Selective 392 Recovery %
In any copper smelter large quantities of copper slag are disc arded as waste material causing space and environmental problems. This discarded slag contains important amou nts of metallic values such as copper and iron. The recovery of copper values from an Indian smelter slag that contains 1.53% Cu, 39.8% Fe and 34.65% SiO 2