2 edition of investigation in copper losses of a slag cleaning furnace found in the catalog.
investigation in copper losses of a slag cleaning furnace
|Statement||submitted by Sheila Lamond.|
|The Physical Object|
|Pagination||iv, 41 l. :|
|Number of Pages||41|
Chapter 11 Copper Loss in Slag. Chapter 12 Capture and Fixation of Sulfur P. J. Mackey particles PeirceeSmith converting Pyrometallurgy raffinate reaction recovery recycle refinery refractory scrap SiO2 slag slag cleaning slimes smelter smelting smelting and converting smelting furnace which led quickly to the book Extractive. traces of combined copper in a few slag particles. This copper may, however, be associated with copper-bearing sulfides and/or secondary copper minerals that formed after the slag production. • Sample No. This sample contains noticeable amounts of metallic copper (Fig. 3). In addition, there are secondary copper minerals (probably malachite).
discussion of slag cleaning is only relevant to sulphide smelters [8, 9]. Two cleaning techniques are in common use in sulphide smelters, electric furnace processing under reducing conditions and slow cooling and flotation. Metals recovered include copper, gold, nickel, cobalt and PGM’s [10, 11]. 3. . The investigation of electric arc furnace (EAF) steel slag as a viable add-on technology to existing stormwater systems for the removal of dissolved phosphorus (P) was extended to explore the effects of varying environmental and treatment system conditions. Parameters such as stormwater composition, P concentration, metal concentration, pH, temperature, slag mass and slag particle size were.
The slag furnace works similarly to the vanilla furnace, but has an extra output slot. It also uses twice the fuel. For most ores, it will produce an ingot with a low (20%) chance of making two instead of one, and also some Stone. Silver Ore will make Silver Ingots and Lead Ingots. Silver is used for Mirrors, which are needed to make Factorization Charge, and Lead is used for electrical wiring. Recovery of copper from smelting slag by sulphation roasting and water leaching Materials and experimental methods Experiments were conducted using a reverberatory furnace slag from the Bor Copper Concentrator, Serbia. The slag was sampled from the crushing line before entering the milling section of the concentrator.
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Copper slag cleaning in an electric furnace is a critical process for reducing the excessive magnetite (Fe3O4) present in the copper slag to decrease the slag viscosity, which can promote the.
During the last few decades, the pyrometallurgical processes used for cleaning copper smelting slags have been steadily optimized. 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 wt.% and wt.%, with most plants reporting copper losses in the discard slag in the range of Cited by: Thermodynamic modelling was used in conjunction with the results of a sampling campaign to investigate the liquidus temperature and the copper losses in slag from the Teniente converter (TC) and from the slag cleaning electrical furnace (EF) at the Paipote smelter in by: have been steadily optimized.
The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in dis-card slag typically in the range of wt.% and wt.%,with most plants reporting copper losses in the discard slag in the range of – wt.%.Cited by: Results obtained show that the main part of copper losses in the slag from the El Teniente furnace are mechanically entrapped or floated unsettled droplets of the co-existing matte phase.
Conversely, the very low copper losses in the slag from the slag cleaning furnace are limited by the physicochemical by: Considering the initial copper content (% Cu) in converter slag, it can be deduced from the Fig. 6 that the loss of copper to the slag is decreased to very low levels (% Cu) independently of CC addition.
It is concluded that the copper losses can be significantly reduced by keeping the converter slag in the settling 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.
SiO2, Al2O3, MgO, and CaO) of the slag have on losses of copper to slag, because it is the appropriate method for this kind of analysis2.
Losses of copper in the slag may be in the form of dissolved oxides or mechanically entrained metal prills4. The data used in this investigation are actual plant data collected over a period of two years.
The entrained droplets are recovered by settling in a slag-cleaning furnace, whereas dissolved copper is recovered by hydrocarbon reduction and settling of matte. Other methods of recovering copper from slag is slow-cooling or solidification, crushing or grinding, and froth flotation.
furnace system, it was then necessary to find a suitable converting furnace slag under a high oxygen partial pressure and the means to transfer continuously various kinds of melts, slag, matte and blister copper.
There is a trend to produce a higher copper matte in. Metal losses in discard slag, as applicable in the copper industry, are the main example of conventional plant utilizing a submerged arc furnace for copper slag cleaning. investigations. the copper losses to the slag.
Tarawa and Kameda (11) studied the Cu-fe-S-SiOg-CaQ system and found that copper in solution represented about half the loss of copper to the slag. In Young (12) attempted to clarify the mechanisms and nature of copper losses.
Modern copper smelters use processed copper ore fed into a flash furnace, typically fired by oxygen which produces blister copper, being further processed in a converter furnace. Molten copper is poured from here into rectangular moulds, the resulting ingots subjected to electrolysis producing a metal of % purity.
Copper can be recycled indefinitely without the base metal being compromised. Recent trends in oxidative continuous smelting of copper concentrates are leading to higher copper loss in slag (up to 6%) mostly in the form of copper oxide.
Reduction of copper oxide from slag is further carried out in slag cleaning furnace with carbon as reductant. In the present study, reduction of copper oxide from a liquid slag by carbon was investigated.
The experiments were. Copper Slag The copper slag used in the experiments is a byproduct generated during the cleaning of electric furnace slag and reﬁning of copper in Tongling Non-ferrous Metals Group Holding Co., Ltd (Tongling, China).
As shown in Table1, the main chemical compositions contained in the waste slag are wt. The Teniente Converter slag is transferred to a slag cleaning furnace (HLE), pulverised coal is injected and the slag temperature maintained with oxygen-fuel burners.
The coal reduces the content of magnetite in the bath, decreasing slag viscosity, and copper particles are. Purchase Extractive Metallurgy of Copper - 1st Edition.
Print Book & E-Book. ISBNThe copper-nickel and PGM-(Platinum Group Metals) bearing concentrates produced in matte separation and metal losses to slag.
Optimization of slag composition at furnace temperature is attempted on the basis of Furnace slag Plant I – 20 15 15 6 41 Furnace slag. perties of flash smelting slags on copper losses during slag cleaning in an electrical furnace.
Archives of Metallurgy 32 () 3,  S. Zhou, Y. Wei, S. Zhang, N. Li,Y. Yang, M. Baratic. Reduction of copper smelting slag using waste co-oking oil.
In a technological process of copper production in the flash smelting furnace, slags with high metal contents, such as copper, lead and iron, are generated. These slags differ in their chemical compositions from slags obtained in processes of copper concentrate flash smelting or bath smelting.
With the technology used at KGHM, the slag dis. invariably lead to significant copper loss in slag, which needs to be recovered by means of reduction and settling in a separate slag cleaning furnace. Reduction of iron oxides from slags using carbon as a reductant in the form of dissolved carbon in iron or graphite has been studied extensively by a large number of researchers.
A number of.Consequently, wet-charged reverberatory furnaces have less copper in their matte product than calcine-charged furnaces, and they also have lower copper losses to slag.
Gill quotes a copper in slag value of % for a wet-charged reverberatory furnace vs % for a calcine-charged furnace.conditions polluting ground and underground water. Copper losses into slag are a continuous problem in pyrometallurgical smelting operations.
Due to shortage of ore concentrate, various mining operations have initiated the recovery of copper from dumped slag. The .