Green Technology for Sintering

Dr. Alexander Fleischanderl ...

... joined Primetals Technologies' predecessor company VAI in 1997 and is now Technology Officer Upstream and VP of Iron- and Steelmaking.


When the first MEROS plant began operating in August of 2007, everyone who visited the site of Austrian-based plant owner voestalpine thought that the sinter plant had been switched off. The air was just so clean. "It was a great moment," says Dr. Alexander Fleischanderl, who was one of the pioneers behind the new sinter off-gas cleaning solution. "From one day to the next, sintering turned from a 'dirty' process into an environmentally friendly one. MEROS was immediately so effective that we overachieved on all the targets we had set for ourselves."

There are several factors that contribute to the success of MEROS: It relies on a series of treatment steps, in which dust and other harmful components are removed from the off-gas, all the while realizing a working principle that is completely water-free. "We get several direct and indirect benefits from MEROS being a dry technology," says Dr. Fleischanderl. "We overcome many of the limitations associated with wet gas cleaning, such as a lack of effectiveness in filtering volatile organic compounds and dioxins. Also, MEROS doesn't pollute any water, which would then have to be treated." By today, MEROS has gained enormous respect within the steel industry—so much so that the core technology has led to additional dedicated dry gas-cleaning solutions for the blast furnace (MERIM) and the LD (BOF) converter (MERCON). "MEROS was pioneered from the heart," says Fleischanderl, "and we will continue to innovate with passion for the environment."