Investigation on the Generation of fines from Kiriburu Iron during Transport and Handling

The Government of India has entered into a contract to supply 2 million tonnes of iron ore per year from Kiriburu Mines of National Mineral Development Corporation to the Japanese Steel Mills Association. The size specifications of lump ore for export are -8"+1/2" with a maximum permissible limit of 10% for the -1/2" for the -1/2" fines delivered at the port of entry in Japan. The ore mined is crushed and dry screened at Kiriburu and sent by rail to Visakhapatnam Port a distance of about 615 kilometres for export to Japan. During this journey , extra ore fines are found due to handling of the lumpy ore at several points during transit as well as due to the jerking and shaking it gets during rail transport.