Meet IMA at the Preconcentration Digital Conference 2020

Join us online, Wednesday 11 November, at the Preconcentration Digital Conference 2020!

During Session 2: Future of Preconcentration, you can join the facilitated small group discussions held via live video where at 5 pm Ilpo Auranen will talk about Ore Sorting Deepdive.

IMA Engineering and Mine On-Line Service have used on-line sensors for analysing ore and waste rock in mining for more than 25 years. Today IMA on-line sensors are used in various stages of the mining process including on-line analysis of drill cores, drill chips, ore and waste in loader bucket, ROM ore analysis on belt conveyor belt and in bulk ore sorting and in slurry analysis in concentrators.

During years of extensive field experience and testing we have found that the waste rock dilution and ore losses create much larger economic and environmental losses than has been previously recognized. According to our studies the main reason is limited number of analysis already in exploration when drill cores or drill cuttings are used in block modelling. The same happens in production because too few and biased samples from benches are used to estimate the ore grade. Much more than today estimated amount of waste enters the mill and considerable volumes of ore losses happen at the same time. The ore grade on the benches and in muck piles is averaged and “homogenized” with averaged and biased samples. These are the main root causes of waste rock dilution and ore losses.

Sensor based preconcentration can be the remedy to waste rock dilution and ore losses. This presentation will show examples of the use of on-line sensors in preconcentration when analysing ore and waste rock in drill cores, drill cuttings, on conveyor belt and in bulk ore sorting.

Waste rock removal in preconcentration has direct effect on energy consumption in crushing and grinding and chemicals in concentrator. In concentrator waste is separated and goes to tailings pond, however, preconcentration directly reduces the volume of the tailings.

In our presentation we will cover cases in ferrous and base metals and in gold mines. Register and watch the program on the event page.

Check the full Conference Program here.

Other news


IMA Engineering, “a huge step forward in my career”

Upon completing the 1st academic year of my master’s studies, I joined IMA Engineering


IlluMINEation: IMA Autosampler, ready for the RHI Magnesita mine

IMA representatives discussed on-site the future proceeding with installing the IMA Autosampler in RHI


The benefits of ore sorting and sensing in mining

Ilpo Auranen, Chairman of IMA, has been recently interviewed by the International Mining Magazine

Remote Installation and CO2 News