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Silica Gelation in Risdon Leach Pulp
The polymerisation of silica is found to interfere with thickening of leach pulps at Risdon. Hydroxyl ion and fluoride ion are catalysts for this reaction. Stability may be obtained by the presence of
Jan 1, 1958
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The Manufacture of Sulphuric Acid and its Use in Metallurgy
Owing to the number of chemical processes now in use for the separation of metals from their ores, and the consequent employment of chemicals at the mine, it is sometimes necessary to be able to produ
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Virtual Mining Enterprise
By using knowledge-based technology to create a Virtual Mining Enterprise and integrating it with existing technical and financial computer systems, a gold mining company has been able to reduce the t
Jan 1, 2000
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The Taranaki Oil-Field
THE Taranaki oil-field is situated on the western side of the North Island of New Zealand, at about its widest part, and may be said to be the most compact and fertile part of the Dominion, for, with
Jan 1, 1912
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Optimization and Control of Laboratory Sulphidization of Oxidized Copper Ores with an Ion Selective Electrode
By Woodcock J. T
A sulphide ion selective electrode (ISE) is suitable for control of sodium sulphide additions in flotation because it has a rapid response to changeS in S2- concentrations, can indicate -low concentra
Jan 1, 1978
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Some Effects of Wood, Cement, and Aluminium Sulphate on Flotation of Broken Hill Lead-Zinc Ore
Results of flotation tests on lead-zinc ore from Broken Hill, N.S.W., confirmed that flotation at pH 9 in the presence of cement gave poorer metallurgical results than flotation at pH 7. Additions of
Jan 1, 1974
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Geophysical Characteristics, Deep Structure, Magmatism and Metallogeny of the Pacific Belt
By L A. Maslov
We have considered the following characteristics of the crust and upper mantle of the Pacific Belt: seismic wave velocity anomalies, mechanical stress and shear deformation rate fields, heat flow and
Jan 1, 1995
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Hydrothermal Eruptions in Ore Forming Reservoirs: Analogues and Models
By D O. Hayba
Metal-rich slurries discharged from excess-enthalpy geothermal wells at Kawerau (NZ) indicate that an efficient ore precipitation mechanism operates in some feedzones. In our conceptual model, which t
Jan 1, 1995
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Design of Reinforced Concrete Chimney at Yallourn Briquetting Works
THE Yallourn chimney has aroused interest, as it is, for the time being, the tallest structural erection in Australia. Its height was not decided on, however, with the object of breaking records, but
Jan 1, 1924
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Permeability of Coal in Relation to Gas Outburst and Drainage
By J D. St George
In this paper a laboratory investigation into the effect of confining stress, water content and gas desorption on coal permeability is presented. Of major significance is the effect of coal permeabili
Jan 1, 1998
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The autonomous rail conveyor significantly reduces ore haulage costs
By T Graham
The invention of the traditional belt and idler conveyor system is attributed to Thomas Robins in 1892. This basic concept, ubiquitous in most mining operations, has not changed markedly in 125 years
Jul 24, 2017
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Oil Exploration in the Western Great Artesian Basin
Delhi Australian Petroleum Ltd., acting as operator for the joint interests of Delhi and Santos Ltd., has been engaged in petroleum exploration in the western Great Artesian Basin since 1958.Extensive
Jan 1, 1964
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Nature Conservation and the Minerals Industry
This paper examines the reform of mining legislation over recent years, the establishment of new Crown land management agencies, and the role of the Crown and environmental groups in nature conservati
Jan 1, 1995
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The Porgera Gold Deposit Structure, Alteration and Mineralisation
By T Leach, B Fulton, R Stewart
Gold mineralisation at Porgera is inferred to have been derived from a deep differentiated magmatic source which is capped by a series of (now tilted) inward dipping sills and stocks, which comprise t
Jan 1, 1995
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Pressing-Drill Method - A Representative Method for Taking Analysis Samples from Recycled Materials
Pressing-Drill Method - A Representative Method for Taking Analysis Samples from Recycled Materials
Sep 13, 2010
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Mechanism Responsible for Flocculation in Poly (N-Isopropylacrylamide) Temperature Responsive Dewatering - Attractive Interaction Forces Induced by Surface Hydrophobicity
Mechanism Responsible for Flocculation in Poly (N-Isopropylacrylamide) Temperature Responsive Dewatering - Attractive Interaction Forces Induced by Surface Hydrophobicity
Sep 13, 2010
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Genetic Classification and Prospectivity of Gold-Bearing Veins in the Otago Schist, New Zealand
By R J. Norris, D J. MacKenzie
Gold-bearing veins have formed at a wide range of depths throughout the uplift history of the Otago Schist. The earliest gold mineralisation occurred during the later stages of Mesozoic metamorphism.
Jan 1, 2000
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Goethite classification, distribution and properties with reference to Australian iron deposits
By J R. Manuel, J M. F Clout
The importance of goethite to Australian iron ore production is steadily increasing as the proportion of goethite-rich, martite-goethite bedded and channel iron deposits increases at the expense of de
Jul 24, 2017
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Episulphide-Based Reagent for Zinc Sulphide Flotation Without Copper Sulphate
Results of laboratory studies on the flotation of marmatite (zinc sulphide) with new reagents, which were developed to avoid the use of copper sulphate, are presented.Episulphides were chosen as the b
Jan 1, 1974
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Solid-Vapour Equilibria in the FeCl3-AlCl3-Cl2 System
By Moyle F. J
This paper describes an apparatus which was developed to study solid-vapour equilibria and presents results which were obtained during a study of the FeCI3-AlCI3-CI2 system. Analysis of the results sh
Jan 1, 1979