Electric stove basically is sealed, higher carbon monoxide concentration can maintain inside furnace, reason but the furnace charge with fusion higher melting point, get containing the slag with low stannum. Accordingly, electric stove is general comfortable contain the stannic concentrate with low iron at processing.
When electric stove fusion, furnace enrages the carbon monoxide that basically is generation of reductive reaction place and carbon dioxide, its amount is gotten lesser than reverberator much. (reverberator heat vital energy is fuel combustion flue gas for the most part about) , accordingly, stannum and its compound volatilize to enrage medium quantity to furnace less, what use device collecting dust lesser also.
Electric stove fusion has very tall productivity, in the course in electric stove fusion can get deficient stannum slag.
The defect of electric stove fusion is: Adjust slag and composition of heat vital energy to compare difficulty. Enter together, the volatilization that issues stannic compound in high temperature the loss is intense increase. In addition, electric energy is used up more, electric stove reachs his accessary installation cost is compared and reverberator is gotten greatly much. Be in the area that goes to the lavatory with report at present, or concentrate contains difficult frit part tall, contain the circumstance with low iron to fall to suit to use relatively.
2, body of heater is tectonic
Refine stannum is mixed now electric stove is circular three-phase electric stove, power is 400 ～ 1400kV·A, diameter of black lead electrode is 220 ～ 400mm, individual plant and bake oneself electrode, true path amounts to 600mm.
Electric stove installs wear in the I-steel that regards hearth as the foundation on, hearth is impending, make hearth gets airy convection cools, also facilitate at the same time call in the stannum that goes out from hearth leakage.
(one) hearth
Hearth material is the key that affects electric stove life character, hearth total ply makes an appointment with 800mm, hearth structure by next upgrade ordinal for: Metallic crust 16 ～ 20mm, asbestine board 10 ～ 20mm, saggar brick, fill 400mm of brick of dozen of makings layer, graphitization carbon. Among them argillaceous brick and fill dozen of makings layer beforehand the hearth appearance that mouth of stannum of make it Xiangfang tilts, chunk graphitization is used on its carbolic brick (norms is 1800mmX400mmX400mm) build by laying bricks or stones builds smooth base or turn over arch hearth, ash is seamed be less than 1mm, in case stannic fluid is permeated, cause hearth brick to float, attaint hearth. The furnace that carbolic brick build by laying bricks or stones builds can be better in reducing atmosphere ground resistance slag advocate of the metal erode, and of carbolic brick fireproof degree very tall also (3000 ℃ ) , so furnace life can amount to 6 ～ commonly 8 months, also have operating period to amount to 1 year the following. Its defect is, contain when the stock of powdery refine when iron is tall, the life of furnace will be affected, and the price of carbolic brick is high also.
Previous 1 2 3 4 56 7 8 Next