Start-up method of fluidized bed roaster
A technology of a boiling roaster and a driving method, which is applied to the field of starting a boiling roaster, can solve the problems of long start-up time, difficulty in raising the temperature of the bottom material of the roaster, and high diesel consumption.
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[0015] The present invention has been used on the fluidized roaster of a 400,000-ton / year production device of a pyrite acid plant. The fluidized roaster has a diameter: 8740 / 14270mm; height: 27850mm; bottom area: 60m 2 ;Upper area: 150m 2 . Oil guns are evenly distributed around the hearth of the fluidized roasting furnace. First prepare the starting material, prepare the starting material with pyrite and pure sulfur with a sulfur mass fraction of more than 35%, and the pyrite and sulfur mass fractions are 20% and 80% respectively; use dry cinder with a particle size of less than 3mm as Bed bottom material, dry slag is the residue after burning pyrite, mainly composed of ferric oxide and ferric oxide, and the addition amount is about 80t; after the air cap of the roasting furnace is cleaned, the prepared Send the dry slag into the roasting furnace, smooth it with a shovel, and do not compact it. The height of the pavement is 76mm. After the cold boiling is qualified, seal t...
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