RECOVERY OF COPPER FROM SMELTING SLAG BY SULPHATION,

RECOVERY OF COPPER FROM SMELTING SLAG BY SULPHATION,

Abstract: In this work extraction of copper and iron from a reverberatory furnace slag was studied. A two-step extraction procedure was followed. The first step was roasting of the slag in the presence of sulphuric acid at temperatures between 150 and 800 oC. The second step was leaching of the resulting calcine with distilled water. The maximum copper extraction of about 94% was achieved. In,Improving Copper Recovery from Production Slags by,,Keywords: slag cleaning, stirring mode, copper slag, submerged arc furnace, stirring reactor Abstract Slags resulting from pyrometallurgical copper processes are important by-products to be controlled in structure and composition. Due to the significant volumes of slag compared with those of the target metal it is mandatory – as already practiced today – to use the slag as a product e.g,Enhancing the flotation recovery of copper minerals in,,01/01/2020· This suggests that the reverberatory furnace is efficient in its recovery of copper and other values to the matte phase as it apparently produces a much cleaner slag. Figure 3 (a) shows a diopside grain (2) with locked and partially exposed bornite inclusions (3 and 1 respectively) while Figure 3 (b) shows a diopside grain with inclusions of locked and partially exposed chalcopyrite (1) as,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. Microscopic and microprobe studies indicate that the recoverable copper is in the form of matte, chalcocite, and metallic copper; the percentage of copper in particles appearing to be copper-free was from 0.23 – 0.54%,Recovery of cobalt, nickel, and copper from slags, using,,Nickel-copper furnace and converter slag -200 kVA. During 1995, a campaign was undertaken on the 200 kVA furnace with the intention of combining furnace slag with the converter slag previously treated. When treating furnace slag containing 0.22% Co on its own, the maximum cobalt recovery that could be obtained was 66%, with a cobalt value of 0.08% in the discard slag. As in previous testwork,Recovery of Copper from Reverberatory Copper Slag and,,Slags are waste minerals produced during furnace smelting of minerals. The contained values of base metals may be released into the environment under natural weathering conditions polluting ground and underground water. Copper losses into slag are a continuous problem in pyrometallurgical smelting operations. Due to shortage of ore concentrate, various mining operations have initiated the,Precious metal recoveries in secondary copper smelting,,31/12/2019· The residual aluminum in secondary copper feed entering the furnace will have an influence on the slag properties and, therefore, on the success of the entire copper smelting process. The black copper smelting process includes reduction and oxidization smelting stages carried out in either order at the same furnace or consecutive furnaces, such as Ausmelt TSL (top submergedRECOVERY OF IRON FROM COPPER FLASH SMELTING SLAGS,CHAPTER 01 Metal Recovery INTRODUCTION The flash smelting process has been used in copper industry for a number of years and has 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 converterOUTOTEC FLASH SMELTING TECHNOLOGY,Outotec Slag Cleaning Slag cleaning at copper and nickel smelters is typically done using an electric furnace process. The design of Outotec slag cleaning furnaces is based on our extensive experience with different slag compositions and under-standing of how to optimize the process for maximum recovery. Our energy efficient furnace design,Management of copper pyrometallurgical slags: giving,,materials from copper slag. Recovery of copper, molybdenum, precious metals, silica and iron, that is the most abundant component of the slag, are the goals for this research. Metals, commercial compounds, alloys and different forms of iron oxides for steel industry are proposed products. 544 MOLTEN SLAGS FLUXES AND SALTS Some previous studies have been considered4–5. Among

Recovery of copper from reverberatory furnace slag by,

Recovery of copper from reverberatory furnace slag by,

01/03/2004· The recovery of copper from reverberatory furnace slag utilizing flotation has been studied. The effective factors such as particle size, pH, the amount and type of collector and additives, and flotation time were examined. The effect of cooling rate on flotation behavior of the slag was also studied. For an air-cooled slag at optimized conditions, 72% of copper was recovered in one stage,RECOVERY OF COPPER FROM SMELTING SLAG BY SULPHATION,,Abstract: In this work extraction of copper and iron from a reverberatory furnace slag was studied. A two-step extraction procedure was followed. The first step was roasting of the slag in the presence of sulphuric acid at temperatures between 150 and 800 oC. The second step was leaching of the resulting calcine with distilled water. The maximum copper extraction of about 94% was achieved. In,Recovery of Copper from Copper Smelting Slag Using a,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,RECOVERY OF COPPER FROM COPPER SLAG AND COPPER SLAG,,The reverberatory furnace slag that has been dumped in the vicinity of the Bor Copper Smelter, Serbia, is currently processed by flotation using an existing production line at the nearby Bor Copper Concentrator. However, the copper recovery . 74 D.M. Urosevic, M.D. Dimitrijevic, Z.D. Jankovic, D.V. Antic obtained has been rather low (about 40%). Previous research indicated that such a low,Iron Recovery from Discarded Copper Slag in a RHF Direct,,Keywords: rotary hearth furnace; discarded copper slag; layers of carbon-bearing pellets; direct reduction 1. Introduction At present, copper production in China mainly comes in a pyrometallurgical process. Generally, for one ton of copper, 2.2 tons of discarded copper slag is generated, and in China, the amount of discharging copper slag exceeds 10 million tons per year [1], with the,Precious metal recoveries in secondary copper smelting,,31/12/2019· The residual aluminum in secondary copper feed entering the furnace will have an influence on the slag properties and, therefore, on the success of the entire copper smelting process. The black copper smelting process includes reduction and oxidization smelting stages carried out in either order at the same furnace or consecutive furnaces, such as Ausmelt TSL (top submergedOptimization of the flotation of copper smelter slags from,,All these three furnaces produce fayalite slag as a byproduct. The slags contain copper with the content ranging between 0.8 to 5% copper. The slags cannot be discarded due to the high content of copper and hence they are sent to a milling and flotation plant (Slag Mill Plant) for liberation and recovery of copper. This work focuses on optimizing the recovery of copper minerals in copper,OUTOTEC FLASH SMELTING TECHNOLOGY,Outotec Slag Cleaning Slag cleaning at copper and nickel smelters is typically done using an electric furnace process. The design of Outotec slag cleaning furnaces is based on our extensive experience with different slag compositions and under-standing of how to optimize the process for maximum recovery. Our energy efficient furnace design,ISASMELT - Wikipedia,The installation of the ISASMELT furnace increased the overall copper recovery in the plant by reducing losses to slag, reduced the number of furnaces in operation, decreased the waste gas volume, and decreased energy consumption by more than 50%. TheEnvironmental Guidelines for Copper Smelting,converter slag) and to form blister copper. Blister copper is further refined as either fire- refined copper or anode copper (99.5% pure copper), which is used in subsequent electrolytic refining. In fire-refining, molten blister copper is placed in a fire-refining furnace, a flux may be added and air is blown through the molten mixture to remove residual sulfur. Air blowing results in,

RECOVERY OF COPPER FROM COPPER SLAG AND COPPER SLAG,

RECOVERY OF COPPER FROM COPPER SLAG AND COPPER SLAG,

The reverberatory furnace slag that has been dumped in the vicinity of the Bor Copper Smelter, Serbia, is currently processed by flotation using an existing production line at the nearby Bor Copper Concentrator. However, the copper recovery . 74 D.M. Urosevic, M.D. Dimitrijevic, Z.D. Jankovic, D.V. Antic obtained has been rather low (about 40%). Previous research indicated that such a low,Iron Recovery from Discarded Copper Slag in a RHF Direct,,Keywords: rotary hearth furnace; discarded copper slag; layers of carbon-bearing pellets; direct reduction 1. Introduction At present, copper production in China mainly comes in a pyrometallurgical process. Generally, for one ton of copper, 2.2 tons of discarded copper slag is generated, and in China, the amount of discharging copper slag exceeds 10 million tons per year [1], with the,Recover Iron and Copper from Copper Smelting Furnace,Table of ContentsMaterialsEquipmentOperating ProcedureTest ResultsDiscussionProduct EvaluationConclusionsAppendix—Evaluation of Granulated Iron as a Precipitant for,Slag Fuming Furnaces Recover Zinc and Lead From,Slag Fuming Furnaces Recover Zinc and Lead From Copper SlagMinimization of Copper Losses in Copper Smelting Slag,,Such conditions include operating the electric furnace at metallic copper saturation, maintaining the %Fe in the electric furnace matte between 6 wt.% and 9 wt.%, not exceeding a slag temperature of 1250°C, and controlling the Fe/SiO 2 ratio in the smelting furnace slag at ≤1.5. In addition, magnetite reduction needs to be performed efficiently during the slag-cleaning cycle so as to,Recovery of metals from melting furnace slag | Mining,,recovery of copper from copper blast furnace slag Copper scrap is treated using reverberatory furnace for melting anode-grade copper (i.e., in the slag. Recovery of these metals from slags enables conversionISASMELT - Wikipedia,The installation of the ISASMELT furnace increased the overall copper recovery in the plant by reducing losses to slag, reduced the number of furnaces in operation, decreased the waste gas volume, and decreased energy consumption by more than 50%. TheIron Recovery from Discarded Copper Slag in a RHF Direct,,By using DR followed by a magnetic separation process for iron recovery from copper slag, Yang obtained iron powder of 92.05% iron content with an iron recovery rate of 81.01%, and Wang obtained iron powder of 92.96% iron content with an iron recovery rate of 93.49%. Both of their tests have achieved good results. However, the above researches, which are technically feasible, have beenEnvironmental Guidelines for Copper Smelting,converter slag) and to form blister copper. Blister copper is further refined as either fire- refined copper or anode copper (99.5% pure copper), which is used in subsequent electrolytic refining. In fire-refining, molten blister copper is placed in a fire-refining furnace, a flux may be added and air is blown through the molten mixture to remove residual sulfur. Air blowing results in,PHYSICOCHEMICAL CHARACTERIZATION OF COPPER SLAG,industries employing smelting furnaces to produce metal as an integral part of the scope of operations to generate revenue rather than incurring the expense of impoundment of slag in a local stockpile or delivery to a waste disposal site. It is the case of the slags produced by the iron and steel, the copper and nickel sulphide, and the nickel laterite industries. Attention must be paid to the,