The invention designs the center low-grade
bauxite dressing method, takes the center low-grade one water
duralumin stone
bauxite as the
raw material, the main point is uses the 'selective
rubbing, the graduation, escapes the
putty, the concentration, the narrow rank flotation process' technical process, the selective
rubbing uses the
ball mill or the vibration rub; The graduation is separates the qualified large grain
ore concentrate, chooses water used grain-by-grain selection flowing; escapes the
putty, the concentration is carries on the escapes the
putty to the ore slime which is smaller than 10mu m and to cause the pulp concentration, satisfies the pulp density request of the following flotation process, uses the water power
cyclone; The narrow rank flotation process uses the flotation process craft, the flotation
reagent is the ore-dressing;the catche receive medicinal preparation is the
fatty acid, the dispersing agent is the
sodium carbonate,merges the graduation work obtained large grain
ore concentrate with the flotation concentrate and final obtain the
ore concentrate,the aluminum
silicon ratio in the large grain ore concentrate is bigger than 9, the
production rate 30~50%, the Al2O3returns-ratio 40~50%, the mix ore concentrate aluminum
silicon ratio is 9~10, the Al2O3returns-ratio is bigger than 88%.The technical process structure is simple,the production cost is low, the movement is steady, the target is stable, has a stronger adaptiveness to the center low-grade one water
duralumin stone
bauxite.