23/07/2020 · At present, iron ore of around +64% Fe is used for production of iron through blast furnace and direct reduction (IBM 2019). To produce +64% Fe from low and mediumgrade ores, crushing and washing are compulsory. During washing of iron ore, to improve the quality of lumps and fines, iron ore slimes are generated. Iron ore slime with particle size less than 212 μm (Primary .