ArcelorMittal Kryvyi Rih updated magnetic separation at the processing plant number 2
ArcelorMittal Kryvyi Rih completed the modernization of the magnetic separation section at the second ore concentration plant. The total value of the investment project amounted to 63 million UAH. A total of five technological sections at ROF-2, each of which includes three stages of grinding, division into fractions and magnetic separation, as well as desliming and dewatering of the concentrate at the filtration section. Earlier, in 2009–2010, magnetic separators were replaced in two sections, and in the remaining three - from May 2018 to March 2019. For a year with a little installed 21 separators instead of 69 old. The reduction in their number did not lead to production losses, on the contrary, it was possible to increase it by 950 tons of concentrate per month for each section, for all five - by 5,000 tons. Mainly, by reducing the iron content in the beneficiation waste - on average from 1.9% to 1.45%.
The new equipment of the Finnish company Metso is not only more productive due to the strong magnetic field, but also energy-efficient. Reducing the number of engines used in the separation area allowed the factory to reduce electricity consumption by 73 kW / h per day for each section. At the same time, separators remain in reserve, thanks to which equipment can be serviced without interruption of production, thereby reducing downtime.
Both concentrators were designed in tight spaces. Modernization at the ROF-2 allowed freeing up space and getting free access to parts and assemblies - maintenance is now much easier, staff has to spend less time on it, devote more time to production technology. In addition, at each section, the load on the factory floors was reduced by 70 tons, which increases production safety.
Mr Volodymyr Teslyuk, Deputy General Director for Production, Mining Department, ArcelorMittal Kryviy Rih said that “Modernization of the magnetic separation section in 2018–2019. we performed on our own, including the installation of various equipment, which helped us significantly save on the services of contractors. Our goal is to completely upgrade our processing plants, to increase the percentage of iron in concentrate, thereby increasing our competitiveness in the market and to provide ArcelorMittal enterprises with better iron ore.”
Source : Strategic Research Institute