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The initial study to control the coal rate injected into a slagcleaning furnace (SCF), based on a soft sensor, was developed at Caletones Smelter, Chile. The old estimation algorithms were only based on discharged cycle average information, leading to large prediction errors.
The slag from the smelting furnace is subjected to the electric slag cleaning process, which comprises two stages. In the first stage the Cu in the slag is reduced by coke from 18% Cu to 5% Cu and in the second stage it is further reduced to recover the metal values in the form of CuFeCo alloy.
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. Conventional pyrometallurgical copper slag .
A cupola or cupola furnace is a melting device used in foundries that can be used to melt cast iron, Niresist iron and some cupola can be made almost any practical size. The size of a cupola is expressed in diameters and can range from to 13 feet ( to m). The overall shape is cylindrical and the equipment is arranged vertically, usually supported by four legs.
Coal for metallurgical coke production: predictions of coke quality and future requirements for cokemaking ... coke rate by high levels of injection of carbon via the tuyeres, in particular pulverized coal injection (PCI), ... productive part of coke which influences slag volume and composition. Industrial experience indicates that a
Intelligent sensor for coal powder rate injection in slag cleaning furnace 779 During the vessel discharge, the operator tries to maintain the coke flowrate by manipulating the set point of the pressure controller on the nitrogen line. Sometimes the blow valve is used to reverse the coke compactness in the lower part of the cone.
In parallel test runs in the pilot scale EAF of IME have been conducted in order to demonstrate the feasibility of a slag cleaning treatment by coke injection. It has been found that the process ...
Reliable, efficient and accurate injection of auxiliary reducing agents is vital for cost effective blast furnace operation. Paul Wurth is involved in the development and application of all forms of gaseous, liquid and solid reducing agents injection via the hot blast tuyeres.
Recent experiment in our laboratory demonstrates that an increase in slag ing with carbon injection rate is limited by slag volume. The current work has identified a relationship between height, carbon injection rate and slag volumes, which predicts the critical injection rate .
DCarc furnace technology has been successfully applied to the recovery of cobalt, nickel, and copper from nonferrous furnace and converter slags. Pilotplant testwork at Mintek has demonstrated recoveries of 98% for nickel and over 80% for cobalt, at power levels of up to 600 kW.
The State–oftheArt Clean Technologies (SOACT) for Steelmaking Handbook reduce environmental impacts in the steel industry. Its purpose is to share information about commercialized or emerging technologies and practices that are currently available to increase energy efficiency and .
May 10, 2013· Pulverized coal injection in a blast furnace Pulverized Coal Injection (PCI) is a process that involves injecting large volumes of fine coal particles into the raceway of a blast furnace (BF). This provides not only a supplemental carbon source but also speeds up the production of liquid iron besides reducing the need for metallurgical coke for ...
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.
INJECTION COKE / INJECTION CARBON. Injection Coke is product derived from Metallurgical Coke. The technique of ing Slag using Carbon in the EAF is used to increase productivity, lower operating costs and increase the quality of steel produced. It is also used as deoxidizing agent. The above product is manufactured at our Gujarat ...
Adding 12 lbs. of flux per ton of molten metal is sufficient to cleanse the metal, remove slag, prevent buildup formation on furnace walls, on channel furnace / pressure pour inductors. Slag/Dross Inclusion Elimination Case Histories . Foundry A melts both gray and ductile iron in several large channel and coreless melting furnaces.
Pulverised coal injection (PCI) is a well established technology. It is practised in most, if not all, countries with cokebased BFs, and new BFs are nearly always fitted with PCI capability. Waste plastics injection (WPI) is less Injection of coal and waste plastics in blast furnaces 5 commonly carried out, with only a few ironmaking plants in
Sep 21, 2012· During the last few decades, the pyrometallurgical processes used for cleaning copper smelting slags have been steadily optimized. 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 ...
Efficient Recovery of Copper and Cobalt from the Matte–Slag Mixture of ISA Furnace by Injection of Coke and Pyrite. ... The optimum slag cleaning conditions were found to be: a coke dosage of 2 ...
Apr 06, 2014· 25 Practical Uses for Cocacola Bog Groomer: Cleaning the toilet is the most tedious of the tasks and let''s be honest, no one really wants to do it—no one but your friendly fizzy partner Cocacola. All you have to do is pour the drink in the commode and wait for an hour before you scrub with a brush and flush—now you have got yourself a ...
Jan 04, 2018· Good clean spoon, new syringe little glass of water you wanna ride that train right ? Well we start ya out light . It''s REALLY REALLY GOOD COKE so about .4 4/10 of a gram, inthe spoon open that brand new u100 uncap it, keep cap. Take the new sy...
Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air — a destructive distillation process. It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern.. The unqualified term "coke" usually refers to the product derived from low ...
flux as limestone, dolomite, and sinter; and coke for fuel. Iron oxides, coke and fluxes react with the blast air to form molten reduced iron, carbon monoxide (CO), and slag. The molten iron and slag collect in the hearth at the base of the furnace. The byproduct gas is collected through offtakes
decreasing availability, metallurgical coke is now being replaced by coal injected at the tuyere area of the finace where the blast air enters. The purpose of this study is to evaluate the combustion of Illinois coal in the blast furnace injection process in a new and unique pilot plant test facility.
Aug 24, 2018· By injecting 2 pct coke and 2 pct pyrite, the contents of Cu and Co in cleaned slag decreased to and pct, respectively. It proves that the injection of additives into molten slag is an effective method to recover Cu and Co from the matte–slag mixture of ISA furnace.
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