Slag produced by flash furnace operations contains significantly higher amounts of copper than reverberatory or electric furnaces. Flash furnace slag is treated in a slag cleaning furnace with coke or iron sulfide. Because copper has a higher affinity for sulfur than oxygen, the copper in the slag as copper oxide is converted to copper sulfide.
This nickel free slag contains 0.4 Co and 0.82 Cu. OUE main studies were about recoveries of valuable metals such as cobalt, copper and iron from the ancient slag via pyro and hydrometallurgical methods 5-14. While smelting the slag using DC arc furnace, we also gathered electrical information via computer and data acquisition systems ...
1.3 Characterisation of the slag The slag type used in copper industry is normally a fayalitic based slag 2. After processing the slag in the submerged arc furnace the slag still contains valuable metals. A typical slag composition including the main metal contents is given in Table 1.
Flash Furnace for Primary Copper Production. The flash furnace relies on specialized refractories to deliver cost-effective performance, regardless of whether it is smelting copper, nickel or lead. Saint-Gobain Performance Ceramics amp Refractories C104 material enhances the furnaces resistance to aggressive slag formed by the smelting process.
The copper content of the slag is maintained at 0.5 to 0.6 percent Cu by maintaining a reducing atmosphere in the slag cleaning furnace. The slag then flows by gravity to the converter furnace. The converter furnace produces anode copper which flows to a holding furnace prior to anode casting. Slag from the con- verter furnace is granulated ...
concentration of copper oxide in the slag is approx. 0,003 mass, i.e. it is markedly lower than its nal level in the slag that is a product of a technological process. The ther-modynamic analysis has showed that at equilibrium, the slag PbO reduction practically begins when the copper as Cu 2 O level in the slag is lower than 3 mass. In
Jul 31, 2020 The main oxides in copper slag, which Author Jei-Pil Wang, Urtnasan Erdenebold. Granulated Blast Furnace Slag Granulated blast furnace slag is a glassy granular material that varies, depending on the chemical composition and method of production, from a coarse, popcornlike friable structure greater than mm No.
Jul 27, 2021 Copper slag is one of the possible abrasives that can be used. Other blasting media that can be considered are sand, glass, plastic or water. Blasting with copper slag is generally done for two different purposes. First of all, copper slag blasting is an effective way to remove mill scale, rust, dirt, paint and other coatings from metal ...
Characterization of slag the chilean case Some properties of a typical copper slag are shown in Table I, and it can be observed that air-cooled copper slag has a black colour and glassy appearance. The specific gravity varies with iron content, from 2.8 to 3.8. The unit weight of copper slag is somewhat higher than that of conventional aggregate.
Copper slag is a by-product obtained during smelting and refining of copper. Copper smelting slag typically contains about 1 wt. copper and 40 wt. iron depending upon the initial ore quality and the furnace type. Main components of copper slag are iron oxide and silica. These exist in copper slag mainly in the form of fayalite 2FeO SiO2.
Dec 15, 2018 OSTI.GOV Journal Article Effect of Iron Phase Evolution on Copper Separation from Slag Via Coal-Based Reduction
Aug 25, 2020 Smelting of copper concentrates in a flash furnace directly into a copper blister results in the production of slag with high copper and lead content. The recovery of these metals is carried out in an electric furnace, from which copperleadiron metallic alloy is then processed in a converter furnace. In the presented work, copper and lead extraction studies were carried out by ...
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copper is recovered from copper-containing slag by putting the matte and slag in a molten state together in a slag treating furnace at a volume ration of more than 15, the melts in the furnace being maintained under agitation so that the slag and matte are in intimate contact so as to efficiently transfer copper from the slag to the matte.
The copper slag cleaning in an electric furnace is based on slag reduction and settling of copper matte inclusions. Copper recovery depends on the slag temperature, degree of magnetite reduction and slag residence time. The formation of solid buildup on the furnace hearth leads to the decrease of furnace volume and slag residence time, affecting
The aim of the present study was to characterize the fayalite crystal phases in two types of copper slag flash smelting furnace slag FS and converter CS slag, given their possible use in ...
The electroplating sludge and copper slag were first crushed, screened, and then transported to the electric furnace after measurement. Then, the mixed material was rapidly heated and melted using an arc heater system, and oxygen-enriched air was blown
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 ...
Each furnace is rotated by a hydraulic drive linked to the furnace by a chain. By rotat-ing the furnace one way or the other, the operator can either pour the slag into the hauler pot or pour matte into a pot in the aisle. The maximum rate of slag skimming is control-led to minimize the copper content of the slag.
This combustion releases a tremendous amount of heat that sustains the high temperature in the furnace.The copper, iron, and silica form two layers at the bottom of the furnace. The lighter, top layer is a slag of mostly iron, silica, and other impurities. The bottom layer of mostly copper and some iron is called matte. The Acid Plant
Copper smelting slag is a solution of molten oxides created during the copper smelting and refining process, and about 1.5 million tons of copper slag are generated annually in Korea. The oxides in copper smelting slag include ferrous FeO, ferric oxide Fe2O3, silica SiO2 from flux, alumina AI2O3, calcia CaO and magnesia MgO. The main oxides in copper slag, which are iron oxide
slag depletion and lead to significant irreversible losses of metal with slag. Therefore, ways to reduce the loss of copper with slag in the process of autogenous smelting are becoming increasingly important today. RESEARCH METHODOLOGY The samples of the slags were obtained from Vanyu-kov furnace in Balkhash Copper-Smelting Plant. They
Copper slag and stainless steel slag of Electric Arc Furnace EAF are two typical metallurgical solid wastes, which contain a large number of valuables, such as Fe, Cr, and Cu.
The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in the range of 0.55 wt. and 1.3 wt., with most plants reporting copper losses in the discard slag in the range of 0.81.0 wt..
Aug 21, 2021 The device is a 5.8-inch by 5.7-inch plastic-tipped, glass slag-shaped device. The glass slags are essentially the same as the slag used on a copper drill bit, but are much thinner, with a 3.3 millimeter 0.25 inch diameter, which allows the Slag to be placed on surfaces that have a high water content, such as metal and concrete. The Slag is ...
Jul 22, 2019 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 ...
The utility model discloses a double-furnace double-side blowing slag forming and top blowing copper making continuous converting furnace. The double-furnace double-side blowing slag forming and top blowing copper making continuous converting furnace respectively performs blowing processes in a slag forming period and a copper making period in a PS Pierce-Smith converter sequentially, and ...
reduction of copper slag were discussed by Zuo, et al., and experiments of the reduction of copper slag were carried out using biomass.13 In current study, experiments were carried out in a slag cleaning electric furnace to compare the reduction perfor-mance and economic benefit of the magnetite reduction in
into several categories like copper electric furnace slag, converter slag, reverberatory furnace slag and so on 1-2. In a typical copper pyrometallurgical process, approximately 2.2 tons of waste CSS generated for every ton of copper produced 3-4. The annual global output of
Copper slag abrasive is suitable for blast cleaning of steel and stoneconcrete surfaces, removal of mill scale, rust, old paint, dirt etc. Suitable for SA-3, SA-2 and SA-2. Copper slag blasting mediagrit is manufactured of the granulated slag of copper refineries, and used for blast-cleaning of metal surface.
iron slag copper slag are very useful for people dealing with woodwork, metalworks, and any other types of activities that involve shaping up and polishing things. These iron slag copper slag are powerful enough to evenly smoothen the surface irregularities and transform them into polished, shaped items.
Jul 06, 2020 Based on the understanding of literatures, the present investigation is focused on the manufacture of ambient cured Geopolymer Concrete GPC using fly ash and ultrafine ground granulated blast furnace slag as the aluminosilicate source materials along with copper slag
Oct 16, 2020 Copper in the upper layer of the ISASMELT copper slag 300 g can be decreased from 17.82 to 0.56 wt pct via reduction at 1250 C for settling 60 minute in the presence of 2.2 mL WCO, followed by cooling with the furnace, and the corresponding magnetite content was approximately 3 wt pct. The copper contents in the middle and lower slag layer are 1.68 and 10.89 wt pct, respectively.
Copper is present in a smelting slag from Teniente Converter TC in the form of mecha-nically entrained matte inclusions and dissolved copper. Copper recovery from the slag requires magnetite reduction to liberate matte inclusions and create conditions for co-reduction of dissolved cuprous oxide. Efficiency of copper recovery from the slag in an