Ore Dilution
Compute ore dilution in mining, D = waste/(ore + waste)·100%, the proportion of waste that ends up mixed with the ore during extraction, lowering the grade reaching the plant. Every operation has some dilution (irregular contacts, imprecise blasting); controlling it is essential, since diluted ore consumes energy and reagents to process worthless material. Enter the masses of diluting waste and ore.
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Diluição de minério
Na fronteira entre o minério e o estéril, a separação nunca é perfeita: um pouco de rocha sem valor sempre acaba indo junto com o minério para a usina. Essa é a diluição: D = estéril/(minério + estéril)·100%. Ela baixa o teor que chega ao beneficiamento — o mesmo metal agora está espalhado em mais massa — e faz a usina gastar energia e reagentes processando material estéril. As fontes são contatos geológicos irregulares, desmonte impreciso e desabamento das paredes. Controlar a diluição (com desmonte cuidadoso e bom controle de teor) é tão importante quanto recuperar bem: minério diluído é dinheiro jogado na moagem. Informe a massa de estéril diluído e a de minério.
Related Tools
Stripping Ratio (SR)
Compute the stripping ratio (SR) of an open-pit mine by dividing the amount of waste (worthless rock that must be removed) by the ore extracted. It is the central economic indicator of open-pit mining: the higher the SR, the more useless material is moved per tonne of ore, and the higher the cost. It defines the pit limit and the viability of the operation. Enter the waste and ore quantities.
Mining Recovery
Compute the mining recovery, R = (mined ore / in-situ ore)·100%, the fraction of the ore originally present in the deposit that is actually extracted. Not all ore is recoverable: support pillars, blasting losses and contacts leave part behind. Together with dilution, it defines the extraction efficiency and the mineable reserves. Enter the mined ore and the in-situ ore.
Metal Equivalent Grade
Compute the metal equivalent grade of a polymetallic ore by adding to the main metal's grade the contribution of secondary metals weighted by the price ratio: Eq = main_grade + secondary_grade · (price_sec/price_main). It converts a deposit with several metals (e.g. copper with gold and silver) into a single comparable grade, used to set the cutoff grade and evaluate the deposit. Enter the main grade, the secondary grade and the price factor (price_sec/price_main).
The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.