The smelt of low ferrosilicon water

  • Time:
  • Click:122
  • source:BERO CNC Machining
Use technology of low silicon smelt to be able to promote converter smelt intensity, reduce fuel comparing, but cause the difficulty that change broken bits easily on the other hand, stick a gun, stick flue phenomenon, because stick a gun,can reduce oxygen gun greatly at the same time service life. This raised a requirement to technology of low silicon smelt. Broken bits of the early days in sticking the gun, prime cause that sticks flue to depend on smelt changes broken bits difficulty, bring about metaphase to return dry time to grow, move broken bits hard, and of early days broken bits the fuse that fusing basically is lime and of a few basic thing decrease. Be in at the same time in broken bits process FeO is a main factor, the growth speed of smelt process FeO is the speed that the influence changes broken bits. In addition, the affiliation of the dolomite of the action that protect furnace rises in smelt process, when equivalent is overmuch, the solid that can make MgO makes dispersion from the separate out in tall alkalinity slag gives directions, increase the viscosity of slag, adverse change broken bits. For this need: 1) the affiliation that reduces makings of early days broken bits is measured. Those who be broken bits of stimulative early days is fused, should reduce early days lime and dolomite add a capacity. Control alkalinity and MgO are in benefit the 1-1 at changing broken bits.

Inside the 5 limits with 5-8% 2) operation leaving residue. Add a capacity to reduce early days lime and dolomite, can be in CaO, MgO is withheld to exist in broken bits eventually; In addition, feO is withheld in broken bits eventually, enlarge the tendency that liquid state broken bits fastens. 3) smelt process is used low - tall - tall - low, 4 paragraphs of guns law. Early days low gun, form slag bath quickly; After early days broken bits is fused raise a gun in time, form normaller gun of tall 200-400mm soft blow, increase amount of the FeO in broken bits, furnace condition joins makings of metaphase broken bits below sufficient and active circumstance; Terminus should be in ensure to the gun is pressed below the condition of broken bits fluidity eventually. 4) transform oxygen gun shower nozzle, increase oxygen gun aperture to count in order to increase aerobic efflux, increase bath agitate, make career in order to raise the FeO in broken bits, suit smelt of low ferrosilicon water. Domestic Han steel 3 steelworkses, after taking above step, got clear result, oxygen gun life by 2006 6, the 73 furnace July rise 9, the 115 furnace October, when smelt of low ferrosilicon water, average time of processing of gun of every furnace oxygen decreased 3 minutes, it is good that at the same time smelt process changes broken bits, furnace condition is stable. CNC Milling CNC Machining