Mark Pownceby | CSIRO - Academia.edu (original) (raw)

Papers by Mark Pownceby

Research paper thumbnail of Deportment of Metals from E-Waste PCBs towards Alloy and Slag Phases during Smelting Using CaO-Al2O3-SiO2-B2O3 Slags

Minerals, May 26, 2023

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Research paper thumbnail of Fundamentals of Silico-Ferrite of Calcium and Aluminium (SFCA) and SFCA-I Iron Ore Sinter Bonding Phase Formation: Effects of MgO Source on Phase Formation during Heating

Isij International, Apr 15, 2022

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Research paper thumbnail of Predicting iron ore sinter strength through partial least square regression (PLSR) analysis of X-ray diffraction patterns

Powder Diffraction, Oct 26, 2017

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Research paper thumbnail of Application of a Floatex density separator for iron recovery from Pilbara iron ore plant rejects

Mineral Processing and Extractive Metallurgy Review, Aug 28, 2022

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Research paper thumbnail of How geochemistry maps upflow in the Ranger U mineral system: using this data for exploration

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Research paper thumbnail of Effect of sintering conditions on the formation of mineral phases during iron ore sintering with New Zealand ironsand

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Research paper thumbnail of A comparative bio-oxidative leaching study of synthetic U-bearing minerals: Implications for mobility and retention

Journal of Hazardous Materials, Feb 1, 2021

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Research paper thumbnail of Thermodynamic stability of SFCA (silico-ferrite of calcium and aluminum) and SFCA-I phases

Journal of the American Ceramic Society, Apr 20, 2017

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Research paper thumbnail of Elaboration of alkali activated materials using a non-calcined red clay from phosphate mines amended with fly ash or slag: A structural study

Materials Chemistry and Physics, Dec 1, 2020

Abstract This study aims to explore the feasibility of using waste red clay from a sedimentary, i... more Abstract This study aims to explore the feasibility of using waste red clay from a sedimentary, interlayered phosphate deposit to produce a geopolymer mortar without any pre-treatment. Alkali activated mortars were prepared by mixing fly ash or slag with red clay and sand, using different fly ash or slag/red clay ratios. The effects of sodium silicate to sodium hydroxide ratio (SS/SH) and curing time on the mortar's properties were studied. The results showed that compared to fly ash-based alkali activated materials, an increase of the slag content resulted in the formation of dense mortars while in the case of fly ash based-samples more porous mortars were formed when the fly ash amount was increased. The mineralogical investigations indicated a partial contribution of montmorillonite and palygorskite from the clay to the alkali activation reaction. The mechanical properties of the materials were promising with a maximum compressive strength of up to 39 MPa obtained for the mixture of fly ash and red clay at a fly ash/red clay ratio of 2 and a SS/SH of 1.

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Research paper thumbnail of The influence of ore composition on sinter phase mineralogy and strength

Mineral Processing and Extractive Metallurgy, Jul 2, 2016

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Research paper thumbnail of Chemical and microstructural characterisation studies on natural and heat treated brannerite samples

Minerals Engineering, Dec 1, 2012

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Research paper thumbnail of Effects of Sintering Materials and Gas Conditions on Formation of Silico-Ferrites of Calcium and Aluminium during Iron Ore Sintering

Isij International, 2016

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Research paper thumbnail of Upgrading a Brahmaputra River sand from northern Bangladesh by flotation to produce a high-grade silica glass sand concentrate

Mineral processing and extractive metallurgy, Feb 28, 2022

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Research paper thumbnail of Experimental study into the beneficiation of a ferruginous rare earth bearing lateritic ore by magnetising roasting and magnetic separation

Minerals Engineering, Jun 1, 2019

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Research paper thumbnail of Effect of Temperature, Time, and Cooling Rate on the Mineralogy, Morphology, and Reducibility of Iron Ore Sinter Analogues

JOM, Nov 16, 2020

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Research paper thumbnail of Recovery and processing of zircon from Murray Basin mineral sand deposits

Mineral Processing and Extractive Metallurgy, Aug 31, 2015

Mineral sand deposits in the Murray Basin offer the potential for significantly expanding Austral... more Mineral sand deposits in the Murray Basin offer the potential for significantly expanding Australia's production of ilmenite, rutile and zircon. Since prices of zircon and rutile are higher than ilmenite, and zircon grades in most deposits are significantly higher than those for rutile, zircon often is the major economic mineral component in mineral sand deposits. Two types of deposits occur in the Murray Basin. They comprise strandline deposits, in which the particle size of the heavy minerals is similar to that in other Australian deposits, and fine grained, sheet-like, WIM style, deposits. While production from several strandline deposits has commenced, the fine grained deposits, which contain significantly greater amounts of mineralisation, are still to be developed. Problems with processing the finer particle size of the mineralisation, its variable mineralogy, higher surface and lattice impurity levels, in particular uranium and thorium in zircon grains, have contributed to this. Overcoming these problems is necessary to obtain the full commercial value from the Murray Basin deposits. Processing to recover a fine grained zircon concentrate from the extensive WIM style deposits and the removal of impurities in the concentrate are discussed in this paper. In particular, treatments to remove surface and lattice impurities, and to lower uranium and thorium levels by an acid leach and with heat and leach treatments, are reviewed. The conditions used in the heating treatment (e.g. temperature and nature of any fluxes added) affect the impurity removal and whether zirconia (ZrO2) or zircon (ZrSiO4) is obtained as the product.

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Research paper thumbnail of Comparison of the chemistry and mineralogy of ilmenite concentrates sourced from fluvial (Brahmaputra River) and beach placer (Cox’s Bazar) deposits, Bangladesh

Ore Geology Reviews, 2019

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Research paper thumbnail of Effect of Addition of Mill Scale on Sintering of Iron Ores

Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science, Jun 30, 2016

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Research paper thumbnail of Thermodynamic data from redox reactions at high temperatures. IV. Calibration of the Re-ReO2 oxygen buffer from EMF and NiO+Ni-Pd redox sensor measurements

Contributions to Mineralogy and Petrology, 1994

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Research paper thumbnail of Signature of Himalayan orogenic features in Brahmaputra River sediments, Bangladesh: Evidence from single-grain heavy mineral chemistry

Chemie der Erde, Sep 1, 2022

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Research paper thumbnail of Deportment of Metals from E-Waste PCBs towards Alloy and Slag Phases during Smelting Using CaO-Al2O3-SiO2-B2O3 Slags

Minerals, May 26, 2023

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Research paper thumbnail of Fundamentals of Silico-Ferrite of Calcium and Aluminium (SFCA) and SFCA-I Iron Ore Sinter Bonding Phase Formation: Effects of MgO Source on Phase Formation during Heating

Isij International, Apr 15, 2022

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Research paper thumbnail of Predicting iron ore sinter strength through partial least square regression (PLSR) analysis of X-ray diffraction patterns

Powder Diffraction, Oct 26, 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Application of a Floatex density separator for iron recovery from Pilbara iron ore plant rejects

Mineral Processing and Extractive Metallurgy Review, Aug 28, 2022

Bookmarks Related papers MentionsView impact

Research paper thumbnail of How geochemistry maps upflow in the Ranger U mineral system: using this data for exploration

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effect of sintering conditions on the formation of mineral phases during iron ore sintering with New Zealand ironsand

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A comparative bio-oxidative leaching study of synthetic U-bearing minerals: Implications for mobility and retention

Journal of Hazardous Materials, Feb 1, 2021

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Thermodynamic stability of SFCA (silico-ferrite of calcium and aluminum) and SFCA-I phases

Journal of the American Ceramic Society, Apr 20, 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Elaboration of alkali activated materials using a non-calcined red clay from phosphate mines amended with fly ash or slag: A structural study

Materials Chemistry and Physics, Dec 1, 2020

Abstract This study aims to explore the feasibility of using waste red clay from a sedimentary, i... more Abstract This study aims to explore the feasibility of using waste red clay from a sedimentary, interlayered phosphate deposit to produce a geopolymer mortar without any pre-treatment. Alkali activated mortars were prepared by mixing fly ash or slag with red clay and sand, using different fly ash or slag/red clay ratios. The effects of sodium silicate to sodium hydroxide ratio (SS/SH) and curing time on the mortar's properties were studied. The results showed that compared to fly ash-based alkali activated materials, an increase of the slag content resulted in the formation of dense mortars while in the case of fly ash based-samples more porous mortars were formed when the fly ash amount was increased. The mineralogical investigations indicated a partial contribution of montmorillonite and palygorskite from the clay to the alkali activation reaction. The mechanical properties of the materials were promising with a maximum compressive strength of up to 39 MPa obtained for the mixture of fly ash and red clay at a fly ash/red clay ratio of 2 and a SS/SH of 1.

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Research paper thumbnail of The influence of ore composition on sinter phase mineralogy and strength

Mineral Processing and Extractive Metallurgy, Jul 2, 2016

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Research paper thumbnail of Chemical and microstructural characterisation studies on natural and heat treated brannerite samples

Minerals Engineering, Dec 1, 2012

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Research paper thumbnail of Effects of Sintering Materials and Gas Conditions on Formation of Silico-Ferrites of Calcium and Aluminium during Iron Ore Sintering

Isij International, 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Upgrading a Brahmaputra River sand from northern Bangladesh by flotation to produce a high-grade silica glass sand concentrate

Mineral processing and extractive metallurgy, Feb 28, 2022

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Experimental study into the beneficiation of a ferruginous rare earth bearing lateritic ore by magnetising roasting and magnetic separation

Minerals Engineering, Jun 1, 2019

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effect of Temperature, Time, and Cooling Rate on the Mineralogy, Morphology, and Reducibility of Iron Ore Sinter Analogues

JOM, Nov 16, 2020

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Recovery and processing of zircon from Murray Basin mineral sand deposits

Mineral Processing and Extractive Metallurgy, Aug 31, 2015

Mineral sand deposits in the Murray Basin offer the potential for significantly expanding Austral... more Mineral sand deposits in the Murray Basin offer the potential for significantly expanding Australia's production of ilmenite, rutile and zircon. Since prices of zircon and rutile are higher than ilmenite, and zircon grades in most deposits are significantly higher than those for rutile, zircon often is the major economic mineral component in mineral sand deposits. Two types of deposits occur in the Murray Basin. They comprise strandline deposits, in which the particle size of the heavy minerals is similar to that in other Australian deposits, and fine grained, sheet-like, WIM style, deposits. While production from several strandline deposits has commenced, the fine grained deposits, which contain significantly greater amounts of mineralisation, are still to be developed. Problems with processing the finer particle size of the mineralisation, its variable mineralogy, higher surface and lattice impurity levels, in particular uranium and thorium in zircon grains, have contributed to this. Overcoming these problems is necessary to obtain the full commercial value from the Murray Basin deposits. Processing to recover a fine grained zircon concentrate from the extensive WIM style deposits and the removal of impurities in the concentrate are discussed in this paper. In particular, treatments to remove surface and lattice impurities, and to lower uranium and thorium levels by an acid leach and with heat and leach treatments, are reviewed. The conditions used in the heating treatment (e.g. temperature and nature of any fluxes added) affect the impurity removal and whether zirconia (ZrO2) or zircon (ZrSiO4) is obtained as the product.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Comparison of the chemistry and mineralogy of ilmenite concentrates sourced from fluvial (Brahmaputra River) and beach placer (Cox’s Bazar) deposits, Bangladesh

Ore Geology Reviews, 2019

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effect of Addition of Mill Scale on Sintering of Iron Ores

Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science, Jun 30, 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Thermodynamic data from redox reactions at high temperatures. IV. Calibration of the Re-ReO2 oxygen buffer from EMF and NiO+Ni-Pd redox sensor measurements

Contributions to Mineralogy and Petrology, 1994

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Signature of Himalayan orogenic features in Brahmaputra River sediments, Bangladesh: Evidence from single-grain heavy mineral chemistry

Chemie der Erde, Sep 1, 2022

Bookmarks Related papers MentionsView impact