Slag Cleaning Furnace. In this furnace, copper rich oxide slags are melted in electric arc furnaces and coke & copper pyrite are added to reduce copper content in the slag. In order to increase reaction rate, slag is over-heated to produce low viscosity aggressive slag.
lining microstructure forming on water cooled steel surface in a high-silica, slag cleaning furnace slag of a direct-to-blister copper smelter is mostly glassy or amorphous. It contains 5-30 µm magnetite crystals, very small and larger copper droplets as well as small magnetite and silicate nuclei embedded in the glassy silica-rich matrix.
Results obtained show that the main part of copper losses in the slag from El Teniente Furnace are mechanically entrapped or floated unsettled droplets of the coexisting matte phase. by the contrary the very low copper losses in the slag from slag cleaning furnace are limited by the physico-chemical form.
Shaft furnace is high efficiency equipment with high heat-availability factor of fuel consumption due to material and gases opposite flow within the furnace. The main purpose of slag processing is extraction copper out of copper, brass and bronze slag fractions of 30 – 100 mm with copper content not less than 5 %, receiving molten metal and ...
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 to low recovery efficiency of electric furnace along with high consumption of electrical energy and water, selection of a method to enable minimum energy consumption and maximum recovery of copper ...
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 …
Concentrate and oxygen-enriched air (30-35% O2) enter the smelting furnace through vertical lances and are smelted to produce a matte of 65% to 69% Cu and low-copper slag. Fuel must be burned to satisfy the heat balance in the smelter chamber. The high-grade matte flows to the electric slag cleaning furnace.
The White Pine Copper Div. (Copper Range Co.) has developed a variety of ways (Clarkson et al., 1978) to use its accumulated reverberatory furnace slag. Four ways were listed for copper losses to occur in the slag and justification was given for constructing a heavy media plant to recover this metal.
Nov 10, 2019· Copper slag is a by-product created during the copper smelting and refining process. As refineries draw metal out of copper ore, they produce a large volume of non-metallic 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.
Physical chemistry of copper smelting slags ... and from the slag cleaning electrical furnace (EF) at the Paipote smelter in Chile. ... copper smelting, slag cleaning, copper losses, thermodynamics
reduction. Among them, these two interfacial chemical reactions, gas slag and gas carbon could ultimately limit the enhancement of these processes. In this work, the gas slag reaction kinetics in slag cleaning of copper slags has been studied. The dissociation rate of C02 on the surface of liquid copper …
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 98% for nickel and over 80% for cobalt, at power levels of up to 600 kW.
Cleaning copper spills De-bricking of MSEF furnace roof Removal of roof brick suspension members Installation of new members and alignment Installation of new roof bricks where necessary Demolition of furnace side and end walls up to the base of furnace Bricking of new side walls and the repair of the DR System where necessary
Nov 01, 2019· Currently, waste cooking oil (WCO) as a renewable energy is not widely utilized. Copper slag cleaning in an electric furnace is a critical process for reducing the excessive magnetite (Fe 3 O 4) present in the copper slag to decrease the slag viscosity, which can promote the sedimentation of matte/copper in the slag, thus reducing the copper content of slag.
Jun 05, 2013· 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…
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
Converting Furnace (C-Furnace) Matte and flux (limestone) are reacted with oxygen-enriched air to form blister copper and then separated from the slag by difference of specific gravity. Slag (Cu14%) is returned to S-furnace, and blister copper is siphoned out and forwarded to Anode furnaces.
Sep 21, 2012· 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 0.8–1.0 wt.%.
The matte is separated from slag by difference of specific gravity in the slag cleaning furnace. The matte is further oxidized to form blister copper (Cu: 98.5%) in the converting furnace.
Three launder-connected furnaces are used: a circular Smelting (S) Furnace, an elliptical Slag Cleaning (CL) Furnace, and a circular Converting (C) Furnace. The mixture of matte and slag formed in the S-Furnace flows continuously to the CL-Furnace, where the denser copper matte separates from the discard slag.
The copper-bearing slag from the flash furnace is further refined in the electric slag cleaning furnace (ESCF). Reverts (waste materials of high copper content generated from the smelting process) are added with the molten slag.
of compositions and temperatures directly relevant to the Slag Cleaning Electric Furnace. The liquidus temperatures in the tridymite and spinel primary phase fields at metallic copper saturation were measured for the fayalite-based slag with 2 wt% of CaO, 0.5 wt% of MgO and 4.0 wt% of Al 2O 3.
Implementation of slag cleaning process in the first electric furnace in Chilean copper smelters generated a series of fundamental questions on the effect of various factors determining the rate ...
The ISASMELT furnace. An ISASMELT furnace is an upright-cylindrical shaped steel vessel that is lined with refractory bricks. There is a molten bath of slag, matte or metal (depending on the application) at the bottom of the furnace.
influence that each component of slag has on the losses of copper in slag-cleaning-furnace slag. Data used for the analysis are actual plant data collected over the past two years of operation. Facts obtained from the study will be helpful for smelter management to control these components in the flash smelting furnace
depending on the method used to clean the final slag of the pyrometallurgical process. Eventually, minor amounts of zinc, molybdenum and noble metals such as gold and silver are presented. Since, final copper slag contain around 1% of copper, its recovery from the slag could be economically accepted if no expensive treatments are found, such as
Clean Galena Chunks >> Reduced Lead Chunks (160%) + Reduced Silver Chunks (110%)* GregTech Only; Automation . The Slag Furnace can be connected to BuildCraft Transport Pipes the same way as a vanilla furnace. Pump the items to be smelted into the top, fuel into the bottom and the output must be pumped out the bottom side as well.
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 …
Induction Melting Furnace-Top of Induction Melting manufacturer,3.1: natural gas copper smelting furnace; 3.2: induction melting copper furnace .... accordingly (no orifice to change)., The gas melting furnace is clean and safe, ... to slag formation, and requires a starting block for the start of the cold furnace.
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.