The commercial slag is produced in the slag cleaning furnace (SCF), where under high temperature (1250 °C) and reducing atmosphere its remaining copper content (5%, approximately) decrease (below to 1%), and flue dust, mainly enriched of Zn and Pb among other metals, is formed [Seetharaman et al., 2014, Schlesinger et al., 2011].
Using explosives to clean slag from boilers isn't a new process, but it's one that many plant operators prefer. The industry began using dynamite to clean boilers in the 1960s.
Abstract: A three-dimensional mathematical model is developed to simulate flow and transfer in an industrial-scale slag cleaning furnace. Focus is put on the effect of the electrode immersion depth on flow and heat transfer in the slag. Detailed results show that the electrode immersion depth has a significant effect on slag flow and heat transfer.
The hot metal and slag accumulate in the hearth of the furnace, but since there is a limit to the amount that can be accumulated before it interferes with the furnace operation, hot metal and slag must be removed from the furnace at regular intervals. The tap hole also known as iron notch, is used for tapping the hot metal from the furnace.
With a far sighted vision and a strong commitment to customer satisfaction, we are indulged in manufacturing and supplying of Slag Cleaning Furnace in Rourkela, Odisha, India. Copper rich oxide slags are melted in electric arc furnace where coke and copper pyrite are added to reduce the copper content in the slag.
The forging furnace is used for preheating billets and ingots to attain a 'forge' temperature. The furnace temperature is maintained at around 1200 to 1250 oC. Forging furnaces use an open fireplace system and most of the heat is transmitted by radiation. The typical load is 5 to 6 ton with the furnace operating for 16 to 18 hours daily.
Slag-cleaning furnaces are commonly connected to smelting units such as Teniente and Noranda converter, Outokumpu flash smelter, reverbertory furnaces, etc. The main function of the fur-nace is the reduction of the matte and metal level in the slag. Depending on the upstream process, the slag is …
Patents for F23J 1 - Removing ash, clinker, or slag from combustion chambers (3,441) 05/2010: 05/25/2010: US7721661 Apparatus for combustion of biofuels : 05/20/2010: WO2010055759A1 Furnace …
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Furnace The areas of slag deposits are at a much lower temperature than the center of the furnace walls. Slag also is deposited in areas midway down the crucible lining, where insufficient metal turbulence from magnetic stirring occurs. Channel Furnaces: Another type of induction melting furnace is the channel furnace. The channel and
Allows for a clean working environment ; Enables effective utilization of cleaned CO gas in different plant applications; Operation. Outotec's open slag bath smelting furnace is a closed furnace that offers high productivity and efficiency in a sustainable way. It is robust, safe, and easy to operate. The furnace is custom designed for ...
Furnace linings are subjected to extreme heat, but are also worn down by corrosion from slag, metallic/slag infiltration, metal oxide/carbon bursting, Fig. 18 A schematic cross section of a ...
The slag- cleaning furnace is better equipped to handle the chrome and can run at high temperatures. The circular shape of the slag- cleaning furnace leads to …
The invention discloses a slag removing device for a molten aluminum tank or a molten steel tank or an aluminum melting furnace. The slag removing device is characterized by comprising a guide column lifting device 1, a fixing rod 2, a connecting arm 3, a rotation driving device 4, a first half-gear coupling 5, a parallel linkage 6, a scraper 7 and a slag removal pouring device 8.
Operation. With the Outotec Electric Slag Cleaning Furnace, the cleaning of smelting furnace slag is carried out using surface coke reduction in an electric furnace. The circular or rectangular electric furnace is operated in batches and equipped with three or more Söderberg electrodes.
Reduce your environmental footprint and lower your investment costs with the compact Outotec Electric Slag Cleaning Furnace. - Adapts to your process needs and treats a large variety of materials - Offers easy, safe, and efficient operation with Outotec's intuitive process control system - Minimizes air leakage into the furnace, as well as dust emissions from the furnace With the Outotec ...
12%Copper slag cleaning using the flotation method and/or in an electric furnace is widely adopted in industrial production.[2,3,4,5] The flotation method has the advantages of low energy consumption and low copper content in the slag, but the waste liquid treatment after flotation has always been an issue.
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.%.
Leading technology in slag cleaning. SMS group is the leading supplier of both electric-arc and submerged-arc furnaces. It all started when we installed the first units more than 100 years ago. Electric arc furnaces are mainly used in steel production, either as DC or AC types (Direct Current resp. Alternating Current).
Smelting slag is processed in Teniente vascular slag cleaning furnace. The slag composition and forms of copper affect the slag cleaning process and final copper content. Converting of high grade ...
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.
Especially slag cleaning furnaces have supplied more than 20 in the last 40 years. Slag cleaning furnaces are commonly connected to smelting units such as Teniente and Noranda converter, Outokumpu flash smelter, reverbertory furnaces. The main function of the furnace is the reduction of the matte and metal level in the slag.
Carbothermic reduction of copper slag or slag settling is usually carried out in an electric arc furnace, rotary holding furnace or Teniente slag-cleaning furnace. In the Teniente slag-cleaning furnace, the slag is reduced in a batch process by injection of an air/oil mixture followed by settling of matte/metallic particles.
With a far sighted vision and a strong commitment to customer satisfaction, we are indulged in manufacturing and supplying of Slag Cleaning Furnace in Paschim Medinipur, West Bengal, India. Copper rich oxide slags are melted in electric arc furnace where coke and copper pyrite are added to reduce the copper content in the 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
Slag-cleaning furnace. Anglo Platinum's Waterval smelter is to be enlarged with the addition by mid-2002 of a 30MVA slag-cleaning furnace to initially treat slag …
At the Kalgoorlie Nickel Smelter (KNS), slag cleaning is performed in an "appendage" to the flash smelting furnace. The aim of this project was to study the slag-cleaning reactions through plant measurements, thermodynamic modelling and laboratory experiments. Measurements taken at KNS showed that the slag and matte in the furnace were not in ...
Slag Cleaning. 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 overheated to produce low viscosity aggressive slag. Dalmia GSB's co-clinker series MAG-Chrome Bricks have excellent resistance to ...
The slag composition in the electric slag-cleaning furnace is commonly within the spinel primary phase field. Only a limited number of experimental studies24) have been reported defining the equilibria between iron-silicate slag, copper, and solid spinel. Most of the other studies510) have
