A plasma heater for the tundish of a continuous caster

Mots clés : Metallurgy;Plasma heater;Continuous caster;Tundish
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Publication: CIM Bulletin
Auteur(s): W.R. Gunter
Numéro: 924
Volume: 82
Année: 1989
Texte
Sommaire: While it might seem like heresy to suggest that "taxation" can be a source of financing, nevertheless some generous tax rules can considerably enhance the tax savings pertaining to a particular expenditure or project. A basic tax knowledge, and careful tax planning, can optimize government participation in a project.
Publication: CIM Bulletin
Auteur(s): Robert B. Parsons
Numéro: 924
Volume: 82
Année: 1989
Texte
Sommaire: Microseismic systems at five mines in the Sudbury Basin provide the basic data for Falconbridge Limited's rockburst research. Daily and long-term analysis of this data as well as underground observations has confirmed the fault-slip mechanism of rockbursting at three mines. A detailed analysis of the complete history of Falconbridge Mine is being conducted and Distinct Element numerical models are being used to simulate both the stick-slip behaviour of faults and the dynamic effects of the...
Publication: CIM Bulletin
Auteur(s): D.M. Morrison
Mots clés: Rockburst, Microseimic Systems, Research, Falconbridge Limited
Numéro: 924
Volume: 82
Année: 1989
Texte
Sommaire: The 1980s for the mining industry can be characterized as the survival of the fittest. High interest rates, low commodity prices, foreign subsidized competition and decreasing ore grades have contributed to a streamlining of the domestic mining industry in the United States, leading to the shutdown of operations or large cutback of workforces. The purpose of this paper is to look at the impact of a layoff on the employees of what was once a major uranium producer in south central Wyoming,...
Publication: CIM Bulletin
Auteur(s): Leonard A. Wolff
Numéro: 924
Volume: 82
Année: 1989
Texte
Sommaire: In 1982, a study was initiated to investigate relationships between bonus and accidents in Quebec underground mines. In 1983, the study was expanded to include the impact of age and experience on accidents.
The paper will describe the methodology followed in gathering information at ten mines from three mining camps in the Province of Quebec, and its transfer to data banks for subsequent treatment. Multifactorial analysis of nine variable files for the ten mines has shown: that age, experienc...
Publication: CIM Bulletin
Auteur(s): N.R. Billette, Marcel Laflamme
Mots clés: Bonus rate, Accident frequency, Underground mining, Production, Development, Services, Multifactorial analysis, Safety
Numéro: 924
Volume: 82
Année: 1989
Texte
Sommaire: This paper describes the development of a process flowsheet designed to provide high dewatering rates and to bring about savings in tailing disposal costs. The flowsheet comprises a hydrocyclone, a settling cone and a thickener arranged in closed circuit. The mill tailing, after pulp density adjustment, is fed to the hydrocyclone which yields two products. The underflow product is sent to the settling cone for further dewatering. The overflow product, together with the settling cone overflow,...
Publication: CIM Bulletin
Auteur(s): T. Yalcin
Mots clés: Mineral processing, Dewatering, Mill tailings, Hydro-cyclones, Process development, Mass balance calculations, Thickeners
Numéro: 924
Volume: 82
Année: 1989
Texte
Sommaire: This paper traces the development of Ontario's cap lamp standard. Over the years, numerous Coroner's Juries investigating fatal mine accidents have made recommendations with respect to underground lighting. As well, recommendations to improve mine lighting have been made by two Commissions, investigating mine safety in Ontario.
During the past few years, the performance of any cap lamp worn by miners involved in serious accidents, have been measured by the Mining Health and Safety Branch....
Publication: CIM Bulletin
Auteur(s): John Vergunst
Mots clés: Safety, Underground lighting, Lighting
Numéro: 924
Volume: 82
Année: 1989
Texte
Sommaire: In recent years the trend in underground metal mining has been toward ever increasing blasts (often in excess of 100 000 tonnes per blast). The Canadian mining industry has been in the forefront of these developments (VRM, LBH and cable bolting to stabilize the surrounding rock/avoid dilution).
In order to move these large tonnages, efficient loading systems have to be developed. This paper shows the technical and economic implications of various loading scenarios based on a predefined...
Publication: CIM Bulletin
Auteur(s): Egon Berger
Mots clés: Underground mining, Metal mining, Ore production, Loading, Bulk mining methods
Numéro: 924
Volume: 82
Année: 1989
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