Experimental Study of Ferrous Calcium Silicate Slags: Phase Equilibria at $$ {\text{P}}_{{{\text{O}}_{2} }} $$ Between 10–8 atm and 10–9 atm

Hidayat, Taufiq; Hayes, Peter C.; Jak, Evgueni

doi:10.1007/s11663-011-9572-8

Cited by 19 publications

(7 citation statements)

References 10 publications

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“…Although the equilibration technique applied has been used widely for slag or even slag/matte studies [14][15][16], this was the first time when it was adopted to study the distributions of trace elements. The LA-ICP-MS technique adopted for the slags has much lower detection limits than the EPMA used earlier [13].…”

Section: Methodsmentioning

confidence: 99%

Equilibrium Distribution of Precious Metals Between Slag and Copper Matte at 1250–1350 °C

Avarmaa

O’Brien

Johto

et al. 2015

J. Sustain. Metall.

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Metal value recoveries in extraction are the key issue for sustainability of metals. The distributions of precious metals (Ag, Au, Pd, Pt, and Rh) between copper matte (a Cu-Fe-S-O melt) and silica-saturated iron silicate slag were determined at 1250-1350°C, under controlled oxygen and sulfur pressures and at fixed partial pressure of sulfur dioxide, in silica saturation for target matte grades of 55, 65, and 75 wt% Cu. High-temperature equilibration/ quenching was performed followed by electron probe X-ray microanalysis and laser ablation-inductively coupled plasma-mass sectrometry for measuring the major elements of the matte and slag, and trace elements of the slag, respectively. The distribution coefficient of silver at 65 % matte was found to be 150, which agrees well with the most recent studies in the literature. The other values obtained were gold 1500, palladium 3000, platinum 5000, and rhodium 7000-8000. The distribution coefficients increased along with matte grade, and for palladium it was approximately 1000 at 50 % Cu and 4000-5000 at 70 % Cu. The distribution coefficients decreased along with temperature but its impact was small. The distribution mechanism of the trace elements between iron silicate slag and copper matte appear to be dominated by properties of the matte phase.

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Section: Methodsmentioning

confidence: 99%

Equilibrium Distribution of Precious Metals Between Slag and Copper Matte at 1250–1350 °C

Avarmaa

O’Brien

Johto

et al. 2015

J. Sustain. Metall.

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“…FIGURE 4 (a) shows experimental determined liquidus composition in the CaO-"FeO"-SiO2 system at 1300 °C and P(O2) = 10 -8 atm 9 . The effect of Al2O3 and MgO on the liquidus is given in FIGURE 4 (b) and FIGURE 4 (c), respectively 12 .…”

Section: Resultsmentioning

confidence: 99%

“…The experimental technique and equipment have been used to accurately characterize high-temperature phase equilibria in various slag systems including CaO-"FeO"-SiO2 system [8][9][10] , CaO-"FeO"-SiO2-S system 11 , CaO-"FeO"-SiO2-MeOx (Me=Al, Mg) systems 12 , "Cu2O"-SiO2-MeOx (Me=Al, Ca, Mg, Fe) systems 13,14 , "Cu2O"-CaO-"Fe2O3" system 15 , "Cu2O"-CaO-"FeO"-SiO2 system 16,17 , and more.…”

Section: High-temperature Experimental Workmentioning

confidence: 99%

High-temperature experimental and thermodynamic modelling research on the pyrometallurgical processing of copper

Hidayat¹,

Shishin²,

Decterov³

et al. 2017

AIP Conference Proceedings

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Abstract. Uncertainty in the metal price and competition between producers mean that the daily operation of a smelter needs to target high recovery of valuable elements at low operating cost. Options for the improvement of the plant operation can be examined and decision making can be informed based on accurate information from laboratory experimentation coupled with predictions using advanced thermodynamic models. Integrated high-temperature experimental and thermodynamic modelling research on phase equilibria and thermodynamics of copper-containing systems have been undertaken at the Pyrometallurgy Innovation Centre (PYROSEARCH). The experimental phase equilibria studies involve high-temperature equilibration, rapid quenching and direct measurement of phase compositions using electron probe X-ray microanalysis (EPMA). The thermodynamic modelling deals with the development of accurate thermodynamic database built through critical evaluation of experimental data, selection of solution models, and optimization of models parameters. The database covers the Al-Ca-Cu-Fe-Mg-O-S-Si chemical system. The gas, slag, matte, liquid and solid metal phases, spinel solid solution as well as numerous solid oxide and sulphide phases are included. The database works within the FactSage software environment. Examples of phase equilibria data and thermodynamic models of selected systems, as well as possible implementation of the research outcomes to selected copper making processes are presented.

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“…However, Po 2 at iron saturation is around 10 −10 atm, which is much lower than that in the process of nonferrous smelting. The mixture of CO and CO 2 was commonly used to control the Po 2 of the slag system through gas-liquid reactions [34][35][36][37][38][39][40]. The CO/CO 2 ratio at a given temperature and Po 2 was calculated by FactSage.…”

Section: Phase Equilibrium Studies Under Controlled Pomentioning

confidence: 99%

Phase Equilibrium Studies of Nonferrous Smelting Slags: A Review

Xie,

Zhao

2024

Metals

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Pyrometallurgy is the primary technique for the production of many nonferrous metals such as copper, lead, and zinc. The phase equilibrium information of smelting slags plays an important role in the efficient extraction of metals and energy consumption. The experimental technologies used in phase equilibrium studies are compared. The presentation and applications of the pseudo-ternary and pseudo-binary phase diagrams are demonstrated in the Fe–Si–Ca–Zn–Mg–Al–Cu–S–O system. Experimental results are also compared with the predictions of FactSage to evaluate the accuracy of the current thermodynamic database. This review paper provides comprehensive information for the operation of nonferrous metals and optimization of the thermodynamic database.

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Experimental Study of Ferrous Calcium Silicate Slags: Phase Equilibria at $$ {\text{P}}_{{{\text{O}}_{2} }} $$ Between 10–8 atm and 10–9 atm

Cited by 19 publications

References 10 publications

Equilibrium Distribution of Precious Metals Between Slag and Copper Matte at 1250–1350 °C

Equilibrium Distribution of Precious Metals Between Slag and Copper Matte at 1250–1350 °C

High-temperature experimental and thermodynamic modelling research on the pyrometallurgical processing of copper

Phase Equilibrium Studies of Nonferrous Smelting Slags: A Review

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