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Challenge conventional sample processing.

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CSN Casa de Pedra Reduces Iron Ore Drying Time by 75% with IMP Infrared Drying Solutions

CSN Casa de Pedra Mine, located in Congonhas/MG, Brazil, acquired an IMP RD20 automatic infrared tray dryer at the end of 2014.

 

This automatic dryer contains an integrated load cell and PLC. Once the dryer is started, it automatically opens the sample inlet and asks the user to insert the empty tray. Once the empty tray is inserted, the oven weighs it and returns the tray to the user. The sample is then added to the tray. The tray with the sample is inserted in the dryer, which weighs the sample and tray, calculates sample weight and starts the automatic drying process.

 

By the end of the program, moisture content (% H2O), initial and final sample weight are automatically calculated and reported to the user.

 

With a new technology, new challenges come and testing is required. “We have run the automatic dryer in parallel with the conventional dryers, to compare the results. We quickly obtained precise results, and started routine operation with the new dryer”, says Marilia Lopes, Quality Warranty Analyst and Project Manager for the IR Dryer. “Conventional iron ore drying time was reduced from over 120 minutes to only 30 minutes”, says Marilia Lopes.

 

This represents a 75% time reduction, for samples with an average 4 kg mass. By 2016, CSN requested a new standard for iron ore drying in IBRAM (Brazilian Mining Association). The process is ongoing and CSN Casa de Pedra is optimistic about it.

 

IMP Drying Solutions can help your company to reduce drying time, allowing process control and maximizing profits. Please contact us for more information.

 

 

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