White Earth Project, Colorado - The largest titanium resource in the United States.

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Sommaire: The lifetime cost of a material handling system, or any mine system, can be reduced through the application of quality engineering. Dynamic simulation is a powerful tool that can be used to enhance the experience and ingenuity of the design team. It cannot only de-bottleneck the system to improve system productivity, but also define critical design criteria to eliminate over-design and reduce capital cost. Eliminating over-design also reduces operating costs by lowering component replacement...
Publication: CIM Bulletin
Auteur(s): D. Cieplinski, D.W. Ginsberg
Numéro: 1022
Volume: 91
Année: 1998
Texte
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
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