Iron Ore Fines Size Microns

1981-6-16ore fines whose particles are nearly all below 150 microns in size are converted into material suitable for use in forming sinter by the addition of agglomerants to these ore fines, the subsequent pelletizing of the mixture into spheres with a maximum size range of 6 mm, and the hardening of the spheres by curing them at temperatures below 300 c.