scholarly journals Thermodynamics of As, Sb and Bi distribution during reverb furnace smelting

2002 ◽  
Vol 38 (1-2) ◽  
pp. 93-102 ◽  
Author(s):  
N. Mitevska ◽  
Zivan Zivkovic
Keyword(s):  
Chemical Analysis ◽  
Thermodynamic Analysis ◽  
Minor Element ◽  
Matte Grade ◽  
Copper Smelter ◽  
Distribution Coefficients ◽  
Element Distribution ◽  
Copper Matte ◽  
Stable Operation ◽  
Furnace Smelting

The results of thermodynamic analysis of arsenic, antimony and bismuth distribution between copper matte and discard slag in reverberatory smelting at 1573 K are shown in this paper. On the basis of chemical analysis of the melt samples taken during stable operation of the reverb furnace No.2 in the Copper Smelter and Refinery, RTB Bor (Yugoslavia), the distribution coefficients of As, Sb, and Bi between copper matte and slag are calculated. The influence of the matte grade on the minor element distribution coefficients between copper matte and slag is also analyzed, as well as arsenic, antimony and bismuth distribution in slag.

scholarly journals Equilibrium of Copper Matte and Silica-Saturated Iron Silicate Slags at 1300 °C and $$ P_{{{\text{SO}}_{ 2} }} $$ of 0.5 atm

2020 ◽  
Vol 51 (5) ◽  
pp. 2107-2118
Author(s):  
Min Chen ◽  
Katri Avarmaa ◽  
Lassi Klemettinen ◽  
Junjie Shi ◽  
Pekka Taskinen ◽  
...  
Keyword(s):  
Phase Equilibria ◽  
Matte Grade ◽  
Distribution Coefficients ◽  
Iron Silicate ◽  
Copper Matte ◽  
Copper Smelting ◽  
Smelting Process ◽  
Water Mixture ◽  
Data Set ◽  
Ice Water

Abstract Experimental study on the phase equilibria between copper matte with silica-saturated iron silicate slags was conducted at 1300 °C and $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 = 0.5 atm. The high-temperature isothermal equilibration in silica crucibles under controlled flowing CO-CO2-SO2-Ar was followed by quenching in an ice–water mixture and direct phase composition analyses by an electron probe X-ray microanalyzer. The equilibrium compositions for matte and slag, as well as the distribution coefficients, were displayed as a function of matte grade. The data set obtained at $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 = 0.5 atm and the previous study at $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 = 0.1 atm by the authors enabled an investigation on the impacts of $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 as well as Al2O3 and CaO additions on phase equilibria in the multiphase copper matte smelting system. Thermodynamic calculations using MTDATA software were performed to compare the experimental results with modeling. The present results enrich the fundamental thermodynamic information for the matte/slag/tridymite/gas equilibria in the primary copper smelting process at high $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 .

scholarly journals Precious Metal Distributions Between Copper Matte and Slag at High $$ P_{{{\text{SO}}_{ 2} }} $$ in WEEE Reprocessing

2021 ◽  
Vol 52 (2) ◽  
pp. 871-882
Author(s):  
Min Chen ◽  
Katri Avarmaa ◽  
Lassi Klemettinen ◽  
Hugh O’Brien ◽  
Junjie Shi ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Precious Metal ◽  
Electronic Waste ◽  
Precious Metals ◽  
Matte Grade ◽  
Distribution Coefficients ◽  
Copper Matte ◽  
Copper Smelting ◽  
Gold Silver ◽  
Ar Gas

AbstractThe distributions of precious metals (gold, silver, platinum, and palladium) between copper matte and silica-saturated FeOx-SiO2/FeOx-SiO2-Al2O3/FeOx-SiO2-Al2O3-CaO slags were investigated at 1300 °C and $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 = 0.5 atm. The experiments were carried out in silica crucibles under flowing CO-CO2-SO2-Ar gas atmosphere. The concentrations of precious metals in matte and slag were analyzed by Electron Probe X-ray Microanalysis and Laser Ablation-High-Resolution Inductively Coupled Plasma-Mass Spectrometry, respectively. The precious metal concentrations in matte and slag, as well as the distribution coefficients of precious metals between matte and slag, were displayed as a function of matte grade. The present results obtained at $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 of 0.5 atm were compared with previous results at $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 of 0.1 atm for revealing the effects of $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 and selected slag modifiers (CaO and Al2O3) on precious metal distributions at copper matte smelting conditions. The present results also contribute experimental thermodynamic data of precious metal distributions in pyrometallurgical reprocessing of electronic waste via copper smelting processes.

Minor-Element Distribution in Olivine

1970 ◽  
Vol 78 (3) ◽  
pp. 304-325 ◽  
Author(s):  
Tom Simkin ◽  
J. V. Smith
Keyword(s):  
Minor Element ◽  
Element Distribution

Rare-earth and minor element distribution and petrographic features of fluorites and associated Mesozoic limestones of northwestern Sicily

1981 ◽  
Vol 32 (1-4) ◽  
pp. 255-269 ◽  
Author(s):  
A. Bellanca ◽  
P. Di Salvo ◽  
P. Möller ◽  
R. Neri ◽  
F. Schley
Keyword(s):  
Rare Earth ◽  
Minor Element ◽  
Element Distribution

scholarly journals Insight on the reduction of copper content in slags produced from the Ausmelt Converting Process

2021 ◽  
pp. 13-13
Author(s):  
H.-B. Yuan ◽  
B. Cai ◽  
X.-C. Song ◽  
D.-Z. Tang ◽  
B. Yang
Keyword(s):  
Copper Content ◽  
Bath Temperature ◽  
Copper Smelter ◽  
Operating Conditions ◽  
Copper Matte ◽  
Airflow Rate ◽  
X Ray Diffraction ◽  
Molten Bath ◽  
Theoretical Support ◽  
Technical Guidance

The reduction of copper content in converting slag using process control is significant to copper smelter. In this study, the slags produced from the Ausmelt Converting Process for copper matte have been analyzed using X-ray diffraction and chemical analysis. Thermodynamic calculation and effects of various conditions including the lance submerging depth in molten bath, the molten bath temperature, the addition of copper matte, and airflow rate were carried out to lower the content in the slag. Thermodynamic analysis indicates that the decrease of copper content was achieved by reducing Fe3O4, CuFe2O4and Cu2O in the slag, decreasing the magnetism of slag and lowering the viscosity of slag, which is feasible at the operating temperature of the molten bath. Experiments show that the optimal combination of operating conditions were found to be the addition of copper matte between 5000 -7000 kg/h, a lance airflow rate of 13000-14000 Nm3/h and a lance submergence depth into the molten bath of 700-900 mm, in which the copper content in the slag can be effectively reduced from 22.74 wt. % to 7.70 wt. %.This study provides a theoretical support and technical guidance for promoting the utilization of slags from the Ausmelt Converting Process.

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