Classification and Separation of mine wastes in Chadurmalu iron ore mine in order to decrease in environmental impacts rate
Subject Areas :Seyed Hamid Reza Mirahmadi 1 , Amir Hossien Bangian Tabrizi 2
1 - دانش آموخته کارشناسی ارشد، گروه مهندسی معدن، دانشگاه آزاد اسلامی- واحد تهران جنوب،
2 - استادیار، گروه مهندسی معدن، دانشگاه آزاد اسلامی- واحد تهران جنوب
Keywords: Environmental impact, borehole, short-term production planning, waste dump, Chadormalu iron ore mine,
Abstract :
One of environmental issues in open pit mining is to separate and send of mine wastes with different grade to different waste dumps. In this paper the mentioned subject of short-term production planning is presented. In short-term production planning the subjects of exact contact boundaries between ore and waste, optimizing of extracting ore grade, the sequence of ore blocks’ exploitation and waste blocks’ removal are considered. Using of boreholes’ data of one or two higher working benches is one of the easiest ways of grade estimating in mining bench. For evaluating of presented model in this research, Chadormalu iron ore mine data is used as a case study. In the case study, the place of the bench in elevation of 1465 m is determined as the target bench of production planning. Average and least of iron grade were estimated respectively 57.08% and 53.62%. So, if only estimated grade in reserve estimating step is considered in short-term production planning more than 30% of the ore block’s reserve is transferred to the waste dump. So, the presented model waste dumps with different iron ore grade is planned for potentially future uses.
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