| 摘要 |
FIELD: pellet production, in particular method for batch preparation. ^ SUBSTANCE: batch includes iron-ore concentrate and binding composition containing bentonite and 1-5 wt % of polymer (e.g. polysaccharide-based polyelectrolyte) as bentonite activator. Polymer content in each case is determined according to specific surface of iron-ore concentrate using the next equation: X = (0.5-2.5)xSs/1000, wherein X denotes polymer content in binding composition, wt %; Ss denotes specific surface of iron-ore concentrate, cm2/g. In addition batch contains 0.5-2.0 wt % of fluxing additive and when pellets are used in metallization furnace batch also contains 0.4-1.1 wt % of bauxite. ^ EFFECT: pellets of high quality in dry and wet states, optimum reducibility and strength. ^ 4 cl, 2 tbl |
