Correlation between Enrichment Ratio and Ore Value Defined for Assessing Metallic Mineral Resources

Mineral resources and geo-engineering

Metals used in everyday life are produced from ores occurring in the Earth’s crust. Geological processes are known to concentrate minerals to form ores of economic value. Mineral processing engineers concentrate these ores by mechanical and physico-chemical methods while the extractive metallurgist extracts the metals by chemical means.

A formula for the correlation between random-set enrichment scores

Given constants s1, s2, . . . , sG, we consider variables X = ∑ sg1[g ∈ A] and Y = ∑ sg1[g ∈ B] as random variables with a joint distribution determined by taking (A,B) as uniformly random among set pairs in which A has fixed cardinality m, B has fixed cardinality n, and the intersection A ∩ B has fixed size q. Arguments about without-replacement sampling give the marginal mean and variance of ...

The OWL Reasoner Evaluation (ORE) 2015 Resources

The OWL Reasoner Evaluation (ORE) Competition is an annual competition (with an associated workshop) which pits OWL 2 compliant reasoners against each other on various standard reasoning tasks over naturally occurring problems. The 2015 competition was the third of its sort and had 14 reasoners competing in six tracks comprising three tasks (consistency, classification, and realisation) over tw...

Application of gravity separators for enrichment of South Chah-Palang tungsten ore

In the present study, the possibility of concentrating tungsten-copper vein ore in South Chah-Palang was examined using gravity separators including Jig Machine (-2360+600 μm), shaking table (-600+120 μm), and multi-gravity separator (MGS) (-120 μm). The representative sample contains 1.5% WO3 and 5.95% CuO. The main tungsten minerals were ferberite and wolframite and their appropriate liberati...

Mining and Exploration for Mineral Resources