A new production scheduling approach considering mill requirements
Küçük Resim Yok
Tarih
2011
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Korza Matbaacilik
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Geo-metallurgical variables control the performances of mining and mineral processing operations. As the fluctuations of geo-metallurgical variables increases, mine production scheduling will be difficult procedure. In conventional approach, the objective is to maximize net present value (NPV) of project. This objective generates descending order of average grade mean. This imposes additional problems on recoveries and throughput in the mill. The problem may be, to some extent, controlled by blending constraint in traditional approach. The blending constraint keeps average grade within upper and lower limits. If there is a very narrow range between upper and lower limits, the average grade of production in each period will be similar. However, the inclusion of this constraint will substantially increase computational time. Therefore, a new model is proposed to tackle with the problem such that computational time is reduced. The idea behind this model is to extract more homogenous metal quantity in the periods instead of maximization of NPV. In new model, the objective function is expressed as a maximin (maximize the minimum) problem. In the case where there is correlation between grade and geo-metallurgical variables, this model generates reasonably good results.
Açıklama
22nd International Mining Congress and Exhibition of Turkey, IMCET 2011 -- 11 May 2011 through 13 May 2011 -- 110210
Anahtar Kelimeler
Blending, Metallurgy, Production control, Blending constraints, Computational time, Conventional approach, Metallurgical variables, Mineral processing, Net present value, Objective functions, Traditional approaches, Scheduling
Kaynak
IMCET 2011 - Proceedings of the 22nd International Mining Congress of Turkey
WoS Q Değeri
Scopus Q Değeri
N/A
