Dilution Control Technology in Open-Pit Mining and Its Application in Barun Mine
Based on the analysis of ore dilution in Barun mine,the dilution rate at the junction of ore and rock in Barun open-pit mine was controlled.With the actual production into consideration,some controlling measures are put forward for the mine,including accurately identifying ore-rock boundary by drilling and sampling,separating ore and rock by blasting,accurately identifying the ore-rock boundary in muck-pile by blasting,and optimizing shovel loading operation among others.As a result,less waste rock has been mixed with ore,leading to the ore dilution down to below 2%.It is shown that the rate of extraction can be obviously improved.
open-pit minedrilling and samplingseparation by blastingore-rock boundaryaccurate identificationshovel-loading optimizationdilution raterock boundaryrate of extraction