NLMK has started implementing the program of gradual replacement of heat-exchanging machinery at the heating furnaces No. 3-5 of the 2000 hot-rolling mill.
The furnaces are used to heat steel slabs before rolling. To decrease heat losses and the fuel expenses, the air is heated in heat exchanger by gases from the furnace.
The replacement program will be carried out during overhauls of 2017-2020. 8 sections of the new types of heat exchangers will be installed, which will increase temperature and decrease energy resources consumption to heat slabs by 3-5%.
The pilot project has been successfully carried out this year at the heating furnace No. 5. (Ukrainian metal)
