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Following a summary of aerodynamic principles and the changes imposed by the process, areas important to the operator are then enumerated. These include furnace lines, cooling and casting technology, coke properties, gas distribution and others. Questions are raised on the implication of lowering the hearth substantially below the tuyeres and about the status of stack injection. Finally, the future developments are identified as being those associated with gas volumes required to pass through the furnace stack per unit time or per tonne of product.

Jan 1, 1975

Optimisation of an open-pittable orebody raises many questions relating to the operation, corporate objectives and orebody characteristics. Often the `black box' is expected to provide instant answers to many complex questions. The aim of this paper is to pose some commonly asked questions that arise during an optimisation study, and to try to provide some answers. The questions are aimed at typical objectives that affect the project and are of primary concern with the decisions that affect its course during the various development stages.

Jan 1, 1997

This paper describes the mechanical and electrical maintenance activities as practised at Isa Mine. The principles of preventative maintenance adopted are described as well as the basis of maintenance cost control.

Jan 1, 1978

By Jones TRP

The Agnew Nickel Mine has a short his-tory of mining activities. However it has experienced a large variety of ground support problems. These problems relate to geological, hydrological, geomechanical, structural and mining techniques. The majority of the prob-lems occur in other underground mines. How-ever the large serpentinite hosted ore body which contains over 80% of the ore has prob-lems rarely encountered in other mines. Sol-utions to the problems are only being gained by understanding the factors creating them.

Jan 1, 1985

By Golledge P

Safety legislation has a long history and widespread application, but how can one test its effectiveness? One way is to examine safety statistics. Another way is to compare the legislation with principles of good safety practice. Mine safety legislation contains many features that are widely accepted, and these should be examined critically to determine their importance. Uniform legislation and revision of legislation should be considered. INTRODUCTION

Jan 1, 1975

Before attempting to outline the Australian Stock Exchange's perspective on expert reports, I think it would be appropriate to explain to those of you -who are not familiar with the Stock Exchange listing rules on just when ASX currently requires companies to obtain an expert report and equally important to note, what the regulators have to say.

Jan 1, 1989

Carbothermal Reduction of Ilmenite Concentrates and Synthetic Rutile in Different Gas Atmospheres

Sep 13, 2010

Legislation, if it is to be effective, must be enforceable by the state and acceptable to the industry. In the mining industry the relationship between the government inspector on the one hand and the mine management and employees on the other, must be one of full co-operation before the system can be effective. To understand our present system, which is-duplicated in most countries of the world, an examination of the history from which it evolved is necessary.

Jan 1, 1975

Hydrocyclones are widely used in both mining and various industrial sectors. Considerable fundamental research work on the modelling of hydrocyclone classifiers has been carried out through the past 25 years. Based on the similarity principle, the hydrocyclone classification was taken as a whole physical process and a group of similarity numbers were obtained with the help of dimensional analysis in this paper. Then, the functional dependences of the similarity numbers have been established. The variables optimisation was carried out with the multiple objectives linear planning programs developed in this study.

Jan 1, 1993

One major aim of the operation of Aberfoyle's matte fuming pilot plant was to assess refractories performance in the process working vessel, a SIROSMELT furnace. High wear rates were expected and whether these could be tolerated was an important question. During operations a range of refractory types was evaluated in both insulated and water cooled furnace designs. Furnace operations enabled lining wear measurements to be made. Results confirm that existing technology can solve any expected refractory problems. Design aspects that should be included in commercial furnaces are shown.

Jan 1, 1984

By Fitchett K

Refractory application in the major iron and steelmaking units are discussed. Mechanis- ms of refractory consumption as revealed by pre- vious studies are reviewed and current practice is evaluated. Deficiencies in refractories now in use are noted and some lines of development are indicated. The iron and steelmaking units discussed are generally restricted to those subject to slagging, structural change or erosion at steel or iron making temperatures, and include the Blast Furnace, Hot Blast Stoves, Hot Metal Ladles, Basic Oxygen Furnaces, Continuous Cast- ing Units and Steel Teeming Ladles.

Jan 1, 1972

The mineralogy of ten trihydrate bauxites and their leached residues from bomb digestion tests at 140, 180 and 2400C was investigated and the resultsòcorrelated with analytical data. It is shown that increased recovery of alumina at high temperatures is due to. the dehydroxylation of goethiteòrather than the presence of alumina monohydrates. The effects of aluminous goethite -on the interpretation of "available alumina". results-and normative analysis are discussed and it is concluded that,'cautionòmust be exercised in interpreting the results of bomb digestion tests in terms of alumina hvdrates.

Jan 1, 1973

Only West Australian entrepreneurs and Queensland politicians generate more debate than the uses and abuses of expert reports. Indeed, there are 300 of us here today to debate the very issues that, in general, have been unsatisfactorily managed by regulators and industry to date. I imagine Trevor Sykes will have some interesting stories to tell tomorrow morning in describing "Mines that weren't quite".

Jan 1, 1989

The history of the physical chemistry of steelmaking is reviewed through international conferences, and compared with the Japanese contribution. Subjects remaining to be solved are discussed. Several steelmaking technologies developed recently in Japan are surveyed.

Jan 1, 1980

By Goode A, Belby P, Wardell-Johnson M

Within a short time frame of just over two years Wirralie Gold Mine has been developed from a virgin geological discovery to an operating gold mine with a mine life of six years and a production rate of 50,000 oz per annum. Construction work on the 600,000 tpa single stage crushing, two stage milling CIP plant commenced in November 1987 and was completed some seven months later at an overall cost of $A25 million. Since commissioning in May 1988 the treatment plant has exceeded design tonnage, availability and recovery. A second expansion programme in January 1989 will increase plant capacity to one million tonnes per annum with associated bullion production of 80,000 ozs per annum.

Jan 1, 1989

By Koch DFA

An electrochemical study of the dissolution of gold in aerated cyanide solution has shown that the dissolution rate is determined b the nature of the surface. A passive film (probably a basic cyanide formed at .o.6 V vs a saturated calomel electrode inhibits both the ca.thodi reduction of oxygen. Some aspects of these retction mechcnisms are discussed together with the-"activating" effect of Thpllium.

Jan 1, 1964

The Elgas Underground Storage Facility at Port Botany, Sydney, is the first purpose-built cavern of its kind in Australia and provides large capacity, safe and environmentally benign storage of Liquefied Petroleum Gas (LPG). The facility will provide Elgas with the flexibility to source product at competitive prices and ensure long-term security of supply. Construction has provided Orica Australia, formerly ICI Explosives, with a unique opportunity to provide a bulk explosive delivery system specifically designed to meet the exacting demands of the site and of the project.

Jan 1, 1999

By Equivar J, Mirabal C, Pyper R

In 1984, work was started to determine the viability of heap leaching silver-containing waste dumps from Cerro Rico near Potosi - Bolivia, at an elevation of 4300 meters (14 100 ft.). The result today is an unusual heap leach utilizing fine crushing, grinding, and agglomeration to process 1000 tonnes per day of ore containing 200 g/tonne silver. The unique metallurgi- cal, economic, and political factors will be discussed which led to the decision to build a heap leach rather than a conventional agitation leach plant. Capital and operating costs will be given along with some of the uncommon process design and equipment problems encountered while developing the operation.

Jan 1, 1991

In a coal mine there are many substances capable of ignition under certain circumstances, which can be placed in the following groups: ordinary combustible solids, dusts, liquids and vapours, gases, metals and plastics. There are many factors influencing ignition, including temperature, minimum ignition energy, particle size, explosion pressure level, rate of pressure rise, specific energy content and also explosive limit. Not all are applicable in every case. Frictional ignition of methane is an accident statistic of increasing concern and is considered in some detail. Practical measures that can be taken to reduce the incidence of frictional ignitions are considered, and also possible ways of ignition suppression.

Jan 1, 1981

By Cole NH

Substantial savings in terms of project time, cost, and financial viability can result through the expert involvement of independent financial advisors in the early stages of any mining project's preparation. This role is not confined to project financing, financial modelling, valuations and corporate finance advice, but may in the early stages be much more strategic in nature, covering a wide group of subject areas. A number of separate examples and case studies are outlined, which show the manner in which financial advisors can be effectively used. The benefits arising from involving an additional professional team with the project group must be offset against the separate and additional cost factors involved.

Jan 1, 1986