Recently, the Ferrous Mining Research Institute of the State Academy of Sciences manufactured a rotating disk separator which can recycle fine-grained residue from ore dressing plants.
A tungsten mine has profited from the introduction of the separator into the production of concentrated tungsten ore from sedimentary tails which were so fine as to be called “dust tungsten”.
The present depletion of mineral resources urgently requires more efficient ore dressing facilities and rational ore dressing processes.
“We conducted research into several gravitational separators in order to process minute mineral particles,” said O Su Nam, director of the institute.
Especially, the research into a gravitational ore dressing method which requires no reagent is assuming growing importance and significance as it does not cause environmental pollution.
In the past, valuable minerals in the form of minute particles from ore dressing plants were difficult to recover by common gravitational methods.
“When we visited a tungsten mine, the miners anxiously asked us to find a way to collect valuable tungsten from the ore residue—this gave an impetus to our research project,” said section chief Kim Chol Nam.
After painstaking efforts, they built the rotating disk separator which has a low production cost and power consumption and takes up a small area.
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