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MEI Online: Plant Operation News: Europe: March 31st 2016


Click for more info on Flotation '19


:: Outotec Awarded a Sulfuric Acid Plant Contract from Boliden Harjavalta


Outotec has agreed with the Sweden-based mining and smelting company Boliden on the main design and delivery of proprietary equipment for a sulfuric acid plant to be built in connection with the Harjavalta nickel and copper smelter in Finland. The order has been booked in Outotec's 2016 first quarter order intake, the value is not disclosed.

The Boliden Harjavalta plant is one of the largest nickel-copper smelters in Europe. The new gas cleaning and sulfuric acid plant solutions designed by Outotec will process off-gas from the smelters into high grade industrial sulfuric acid. The plant will meet all of the current and planned European environmental requirements through innovative gas cleaning, production of sulfuric acid and highly efficient heat recovery system. In order to recover as much energy as possible, the heat recovery system uses the surplus heat of the SO2 converter and turns it into high-pressure steam. The surplus heat from the drying and absorption section of the acid plant is converted into hot water and then supplied to the adjacent power plant for further use.

The first construction phase of the sulfuric acid plant is expected to be operational in May-June 2018.

"We are extremely pleased that our long-term partner Boliden awarded us this order. Outotec's advanced gas cleaning and sulfuric acid plant solution will improve the environmental performance of the Harjavalta smelter and reduce the need for external energy, which will shorten the payback time of the investment," says Robin Lindahl, Head of Outotec's Metals, Energy & Water business unit.




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