Simulation as a tool for quantifying design parameters for material handling systems.

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Sommaire: A brief history of the development of the Kivcet flash smelting process is presented. The broad scope of the process with an ability to treat high grade lead sulphide concentrates, as well as oxidized lead-zinc residues, is emphasized. Fine coal in the charge serves two purposes, one as auxiliary fuel and the other as a pre-reductant for ferric iron in residues. Current Kivcet operations incorporate a layer of coke or Òcoke checkerÓ at the surface of the slag in the reaction shaft that acts...
Publication: CIM Bulletin
Auteur(s): Y.I. Sannikov, M.A. Liamina, V.A. Shumskij, Y.A. Grinin, M.V. Radashin
Numéro: 1022
Volume: 91
Année: 1998
Texte
Sommaire: In open pit mining, each small mining unit (SMU) is selected for mill processing based on an estimate of its true grade. The estimation is usually done using analyses of cuttings from blast holes within that SMU. One common estimator used for selection is the arithmetic average of within-SMU samples. This estimator is conditionally biased. The effect of a conditional bias is to overestimate the profit really recovered from the deposit. For this reason, a conditionally unbiased estimator is...
Publication: CIM Bulletin
Auteur(s): D. Marcotte, P. Groleau, O. Tavchandjian
Numéro: 1022
Volume: 91
Année: 1998
Texte
Sommaire: Acquired by Teck Corporation in 1990, the White Earth project, located in southwestern Colorado is the largest titanium resource in the U.S. Teck Corporation has conducted geologic, reserve, mineral processing, pre-marketing, and environmental baseline studies directed toward the economic feasibility of producing titanium pigment. The White Earth project is situated in a 31 km2 alkalic-carbonatite complex intruded into Precambrian granite and metamorphic rocks about 570 million years ago....
Publication: CIM Bulletin
Auteur(s): K.C. Shaver, KR.A. Lunceford
Numéro: 1022
Volume: 91
Année: 1998
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