Method of producing ball agglomerated particulate material

摘要

Ball agglomerated particulate material is produced by comminuting the material to produce coarse particles having a size predominantly within the range 0.3 mm to 1.4 mm, and fines, then feeding the coarse particles, fines and an agglomerating liquid into a rotating ball agglomerating mill with the volume fraction of the coarse particles being 20% to 80% by volume of the total solids feed to the mill, continuing rotation of the mill until agglomerated balls are produced having a continuous network of fines interspersed with the coarse particles such that: 1 - epsilon 1 - epsilon O 1 = K epsilon epsilon O 1 - m WHERE epsilon = THE POROSITY OF THE AGGLOMERATES, epsilon O = THE POROSITY OF SIMILAR AGGLOMERATES FORMED ENTIRELY OF THE FINES, M IS THE ABOVE MENTIONED VOLUME FRACTION OF COARSE PARTICLES, AND K = 0.7 to 1.