fayalite slag composition

Fayalite

As Fig..shows, immiscibility between matte and fayalite slag increases with increasing silica content (Yazawa,). A high sulfur/iron ratio also increases the completeness of separation, as do the presence of calcia and alumina in the slag ( Table.).

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SLAG PHASE EQUILIBRIA AND VISCOSITIES IN FERRONICKEL ...

predicting the effects of changing temperature and slag composition at liquid and sub-liquid conditions over a wide range of compositions. The results of the model predictions of phase equilibria and viscosities are presented in the form of pseudo-binary sections.

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The formation of magnetite in slag from the autogenous ...

Composition data with unstable copper content in matte in the range ofto%, and zinc in matte – from.to.% were involved in calculation. Copper content in slag …

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Fayalite Mineral Data

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Copper extraction

Copper extraction refers to the methods used to obtaining copper from its ores. The conversion of copper consists of a series of chemical, physical, and electrochemical processes. The conversion of copper consists of a series of chemical, physical, and electrochemical processes.

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Fayalite: Mineral information, data and localities.

Fayalite-Forsterite Series, and the Fayalite-Tephroite Series. The Fe+ analogue of Forsterite , Tephroite , and Calcio-Olivine . Uncommon in nature, but common in man-made (metallurgy) iron slags.

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THERMODYNAMIC INVESTIGATION OF BRIQUETTE …

chromium containing slag [] have been investigated. The aim of this paper is to investigate the possibility to briquette mixtures of wasted fayalite with calcium carbide and a thermodynamic investigation of the reduction process in the produced briquettes. EXPERIMENTAL The chemical composition of the wasted fayalite,

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ALKALI ACTIVATION OF FAYALITE SLAG

Alkali Activation of Fayalite Slag Major Subject Type of Thesis Submission Date Number of Pages Environmental Engineering Master’s Thesis August,Abstract In this thesis, alkali activation of fayalite slag was investigated. The slag utilized is a waste by product from nickel

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COMPOSITION MODIFICATION OF ZnO CONTAINING …

ratio, at elevating ZnO content, the liquid line draws closer to the fayalite composition, which leads to a large amount of fayalite precipitation. For slag with a lower ratio of FeO/SiO, increasing ZnO may suppress the precipitation of fayalite, as the composition of slag approaches the …

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THERMAL STABILITY OF FAYALITE SYSTEM FORMATION AT …

Thermal stability of fayalite system formation at the interface between steel and mouldVertical composition: the mixture has% iron oxides and% SiO2; Vertical composition: the mixture has% iron oxides and% SiO2; Vertical composition: the mixture has% iron oxides and% SiO2; Vertical compositionthe mixture has% iron oxides and% SiO2. fayalite slag composition

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WIRG Experimental Bloomery

The other constituents seen in the slag microstructures are light grey needles of the iron rich olivine, Fayalite (2FeO.SiO) all held in a glassy matrix which has a general composition (CaO.AlO.2SiO), corresponding to the mineral Anorthite.

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EFFECT OF SLAG COMPOSITION ON OXIDIC DISSOLUTIONOF …

for fayalite slag (A) containing no lime, and the remarkable de&#; pendences on oxygen potential and temperatura should be noticed. However, just an opposite dependence on oxygen potential is observ&#; ed for cal.cium ferrite slag (O) where the effect of activity of cao is much superior to oxygen potential.

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COMPOSITION MODIFICATION OF ZnO CONTAINING …

ratio, at elevating ZnO content, the liquid line draws closer to the fayalite composition, which leads to a large amount of fayalite precipitation. For slag with a lower ratio of FeO/SiO, increasing ZnO may suppress the precipitation of fayalite, as the composition of slag approaches the …

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Fayalite Based Slags: Metal Recovery and Utilization

Fayalite based slag has already been used for a long time in copper metallurgy. The production of copper from both ores and secondary resources results in major amounts of fayalite slag at a rate of.ton slag per ton of produced copper.

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Slag formation during high-temperature interactions ...

of the substrates revealed that the formed slag was fayalite. The thermodynamic criteria for slag formation and possible mechanisms of the reaction are discussed in the light of the experiments. Key words: silica, mullite, fayalite, corundum, slag formation, sessile drop. fayalite slag composition

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THE ESTIMATION OF SLAG PROPERTIES

5.composition worksheet.Collected ... Nonferrous slags are frequently based on fayaliteeg FeO.SiOCoal slags/ fly ashes are basically CaO+Al2O+ SiOwith relatively low CaO levels ... and the slag composition shows a steady increase in CaO concentration and a decrease in Al2O3.

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Blast Furnace Slag

Tabledepicts the typical chemical composition of blast furnace slag. The chemical compositions shown are in general applicable to all types of slag. The data presented in Tablesuggest that the chemical composition of blast furnace slags produced in North America has remained relatively consistent over the years.

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Wetting Behavior between Fayalite-Type Slags and Solid ...

Wetting Behavior between Fayalite-Type Slags and Solid Magnesia. Authors. Hiroyuki Fukuyama, Department of Metallurgy and Materials Science, University of Toronto, Toronto, Ontario M5SE4, Canada; Search for more papers by this author * Member, American Ceramic Society. ...

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Forsterite-fayalite series | mineralogy | Britannica.com

Compositions intermediate to the end-members of the series (forsterite and fayalite) are also written as Fo x Fa y, an expression of the ratio of forsterite to fayalite. For example, a composition made up ofpercent forsterite andpercent fayalite is written FoFaand further abbreviated to Fo.

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(PDF) Characterization of Fayalite from Copper Slags

Two typical slag compositions different in chemical composition and way of production were selected, in order to clarify how these differences affect fayalite crystallization and composition.

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CHARACTERIZATION OF FAYALITE FROM COPPER SLAGS

of flash smelting furnace slag (FS) and Fo # =.for the sample of converter slag (CS). Fig.. Microstructure of sample of flash smelting furnace slag. Elongate aggregates of fayalite and black magnetite crystals in a groundmass of glass.x optical magnification. Plane polarized (a) and cross polarized (b) transmitted light photomicrographs.

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USB

1) acid leaching fayalite slag in a leaching heap, wherein the fayalite slag comprises fayalite slag from an electric furnace for reductive slag cleaning and is granulated and classified% with a particle diameter greater than.cm.;

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Chemical characteristics of iron and steel slag : NIPPON ...

pH Due to the effects of the limestone it contains, the pH of iron and steel slag increases to–when it reacts with water, indicating alkalinity that is the same or lower than that of recycled concrete base course material and cement-stabilized soil.

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EXPERIMENTAL INVESTIGATION AND MODELLING OF THE ...

content in the slag phase is negligible, so all iron can be represented as ferrous oxide. The ratio of FeO/SiOcorresponding to the fayalite composition is showed as a dotted blue line. It can be seen from this figure that onlyslag samples (4,and) could be considered as a true fayalite slag (i.e. with the SiO/FeO ratio

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Structure and Properties of the Slags of Continuous ... fayalite slag composition

of the slag composition for continuous converting of ... Abstract—The surface tension and density of the slags that form during the continuous converting of copper mattes and concentrates into blister copper are determin ed. The slag melt compositions are varied over a wide ...Fayalite slag consists of.wt % FeO, ...

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Composition Modification of ZnO Containing Fayalite Slag ...

Abstract. Fayalite based slag is formed during the smelting process of secondary copper resources. It was found that with the presence of high ZnO, the slag became viscous, causing a slag tapping problem.

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Utilization of nickel slag using selective reduction ...

The nickel slag, which was generated from a flash smelter furnace, appears to be round, black granules. The chemical composition of the slag, which was determined by chemical titration, is listed in Table. It is easy to find from Tablethat FeO and SiO2, are the main components which exist mainly as fayalite (FexSiO4) in the slag.

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FAYALITE (Iron Magnesium Silicate) fayalite slag composition

Fayalite forms a second series with the mineral tephroite. Tephroite is the manganese rich member of the series with a formula of MnSiOand fayalite is the iron rich member. Tephroite is a member of the more inclusive Olivine Group.

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Quartz-fayalite-iron and quartz-fayalite-magnetite ...

The quartz-fayalite-iron and quartz-fayalite-magnetite equilibria have been studied in the temperature rangeK, respectively, using an electrochem-ical technique. The results are in excellent agreement with the calorimetric data on fayalite (Robie et al.,).

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Study of Phase Relations of ZnO-Containing Fayalite Slag ...

saturation. The composition of the slag for the calcu-lation is taken from Table I. B. High-Temperature Equilibration Experiment Two types of slag were employed as master slag, namely an industrial secondary copper smelting slag (composition showninTableI, C1) and a synthetic zinc-free fayalite slag (wt pct FeOwt pct SiOwt pct AlO ...

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Management of copper pyrometallurgical slags: giving ...

The average composition of final copper slag corresponds to–% iron,% silica, less than% of alumina and calcium oxide and copper content is less than%,

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