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Sep 21, 2012· The electric furnace or rotary slagcleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in the range of wt.% and wt.%, with most plants reporting copper losses in the discard slag in the range of – wt.%.
Consequently, wetcharged reverberatory furnaces have less copper in their matte product than calcinecharged furnaces, and they also have lower copper losses to slag. Gill quotes a copper in slag value of % for a wetcharged reverberatory furnace vs % for a calcinecharged furnace.
Mintek has been working on the recovery of cobalt, and the associated valuable metals, from slags, since 1988, using DCarc furnace technology to effect selective carbothermic reduction of the oxides of cobalt, nickel, copper, (and zinc, where present), while retaining the maximum possible quantity of iron as oxide in the slag.
Copper Slag is an aggressive abrasive frequently used in new steel and steel maintenance applications. Its bulk density and angular shape give it an aggressiveness that provides clean, fastcutting action, considerably increasing production rates.
Oct 02, 2019· Copper slag is a byproduct created during the copper smelting and refining process. As refineries draw metal out of copper ore, they produce a large volume of nonmetallic dust, soot, and rock. Collectively, these materials make up slag, which can be used for a surprising number of applications in the building and industrial fields.
Copper loss in the slag of Khatoonabad flash smelting furnace is estimated to be about 1–3 %. At present, the electric slag cleaning furnace is used for the recovery of copper from slag. However, due...
Using copper slag as a raw material for the manufacture of OPC. Materials and methods: The raw materials limestone, copper slag, granulated blast furnace slag and bauxite were characterised for their chemical and mineralogical properties using standard procedures. The results are presented in Table 1 and Figure 1.
PDF | Copper loss in the slag of Khatoonabad flash smelting furnace is estimated to be about 1–3 %. At present, the electric slag cleaning furnace is used for the recovery of copper from slag.
Electric Arc Furnace Slag (EAF or steel furnace slag) Produced when scrap metal and fluxes are oxidized by the use of an electric current. Molten slag is generally placed into ground bays for cooling. Both BOF and EAF slags are somewhat heavier than Blast Furnace Slag and most quarried rock material. Uses include
A slag byproduct of such workings was a colorful, glassy, vitreous material found on the surfaces of slag from ancient copper foundries. It was primarily blue or green and was formerly chipped away and melted down to make glassware products and jewelry. It was also .
the slag the reduction of copper losses in the slag or the slag cleaning process could be suggested [3, 4]. In that context, this paper investigates the abundance and distribution of species of copper in various types of slags (flash smelting furnace slag, electric furnace slag and converter slag.
Recovery of copper from copper slag and copper slag flotation tailings 77by oxidative leaching Leaching with ferric sulphate The slag and the slag flotation tailings were leached with ferric sulphate in 1 M sulphuric acid. The ferric iron concentration was varied in the range from 5 g/dm3 to
12 Sulfuric acid leaching of sulfide slag of Sarcheshmeh copper reverberatory furnace Hossein Aghajania,*, Jalil Vdati Khakib, Masoud Goudarzic, Naser Hosseinia a Materials Engineering Department, University of Tabriz, Tabriz, Iran. b Department of Metallurgy and Materials Engineering, Ferdowsi University of Mashhad, Mashhad, Iran. c School of Metallurgy and Materials Engineering, .
The copper ore become molten copper droplets that fall to the bottom of the furnace forming a molten copper layer with a slag floating on top of it. The molten copper is tapped and sent through the same processes as the reverb smelted copper, except for the converter stage, as it has been already converted to blister copper in the flash furnace.
Granulated copper slag is more porous and therefore, has lower specific gravity and higher absorption capacity than aircooled copper slag. The granulated copper slag is made up of regularly shaped, angular particles, mostly between and mm (No. 200 sieve) in size (Emery, 1986, Hughes and Haliburton, 1973).
Description: Copper slag is a byproduct produced during smelting of copper, which is then processed into abrasive products. Typically it is composed of Ferro silicate material and oxides formed when the molten slag is quenched in cold water.
(SiO2, FeO, Fe3O4, CaO, Al2O3) and the content of copper in the matte on resulting copper content in the slag during smelting of the sulfide concentrates in the reverberatory furnace. When comparing results obtained with MLRA model calculations with values measured at industrial level high degree of fitting is obtained (R2 = ).
possible option. The copper slag contains a high content of silica and iron. The solution final pH is the most important factor affecting the removal of iron and silica from the leach solution and the overall metal recovery. Fe removal from the leaching of copper slag is done by the formation of a metal hydroxide.
Copper slag is an abrasive blasting grit made of granulated slag from metal smelting processes (also called iron silicate). Copper slag abrasive is suitable for blast cleaning of steel and stone/concrete surfaces, removal of mill scale, rust, old paint, dirt etc. Suitable for SA3, SA2½ and SA2.
Dec 28, 2017· What is copper tailing and copper slag? There are two typical deposits which ultimately yield copper. Ores and Sulphides. Copper is typically only present at a 1% level in the mined material. In mining copper, one usually crushes the ore to a fine...
All Coal Copper Slag Abrasive Coal slag is a glass matrix aluminasilicate which is produced as a byproduct of coal burning power plants. As it burns, the residual ash becomes molten. When this slag is cooled, it vitrifies into a glassy, abrasive material, which is then crushed to produce blast media. ...
123 Primary Copper Smelting. 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 ...
This combustion releases a tremendous amount of heat that sustains the high temperature in 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
Ebonygrit is a disposable highdensity blasting slag made from a byproduct of copper production. Ebonygrit distinguishes from lightweight blasting slag, due to its high density property. Typically, the majority of its composition is iron oxide and silicon dioxide, formed when molten slag .
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