Tata Steel buys Rio Tinto’s smelter technology to cut cost, emission
Tata Steel has acquired a new smelter technology and its intellectual property rights from Rio Tinto, one of the leading global iron ore mining companies, for an undisclosed amount. The newly acquired technology along with Tata Steel’s existing innovative Hlsarna technology has the potential to reduce use of energy and carbon emissions by at least 20 per cent and bring down steel-making cost through use of lower priced raw materials, including steel scrap.
Tata Steel has tested the HIsarna technology at its IJmuiden steelworks in the Netherlands. HIsarna consists of a reactor into which iron ore is inserted from the top. The ore is liquefied in a high-temperature cyclone and drips to the bottom of the reactor. When powdered coal is injected into the reactor, it combines with the molten ore to produce pure liquid iron and CO2 (carbon dioxide).
This technology removes a number of pre-processing steps resulting in significant efficiency gains. The pure CO2 produced through in HIsarna installation can be captured and stored for reuse. This process will cut CO2 requirement by 80 per cent and lead to cost saving, besides substantially reducing emissions of fine particles, sulphur dioxide and nitrogen oxide.