Ao Simai is special law fusion technology is applied extensively in all sorts of metallic extraction processes, can mineral products of fusion copper energy goes mine of lead of essence of vulcanization of cupreous milometer, direct fusion to produce concentrate of stannum of wide lead, fusion to produce tin, all sorts of broken bits material that also can handle smeltery and reworked material. Ao Simai is special the law is the fuse-element inside bath, charging, cause between gas intense agitate and mix, greatly aggrandizement quantity of heat is delivered, quality is delivered and chemical response rate, so that be in,fuel demand and productivity respect produce taller economic benefits. Ao Simai is special the immersion of spray gun upend of the law is inside slaggy layer, spray gun structure is relatively special, furnace dimension is more compact, integral equipment is simple.
Art of Ao Simai acrobatics is in original Sai Luorong refine law is mixed on the foundation of law of moxa Sa fusion, undertook many applied sex technology is developed, increased spray gun especially outer sleeve, it is OK to make the place inside furnace needs combustion wind 2 times direct from same raise spray gun gush to enter furnace inside, make the metallic steam of bath upper part and unfinished complete flaming carbon qualitative grain is able to burn adequately, and by intense churned fuse-element absorbs his, relatively the thermal efficiency that improves the reaction inside furnace substantially, also improved flue gas quality at the same time.
Ao Simai is special furnace structure is by furnace casing, lining, hearth, boiler setting, roof, spray gun, spray gun clip is held frame reach device of spiral lifting device, feed in raw material, ascendant flue and product to give off the composition such as the mouth. Ascendant flue design is to assure flue gas unobstructed, 2 it is to prevent cohere to jam as far as possible, and ensure it is easy to produce cohere hind clear. The configuration of flue has bend inclined and perpendicular type. Flue liner is fireproof material, the purpose is intromit flue is slaggy can arrive from regurgitate inside furnace. Cohere of bend inclined flue is serious, and clear not easily. Perpendicular type flue is the one part of heating surface of more than heat boiler, the flue wall temperature of this kind of form easy cohere of low, soot, but cohere layer is easy fall off, good clear.
Ao Simai is special furnace fusion rate is rapid, productivity is tall, construction investment is little, operating costs is low, raw material adaptability is strong, with already had equipment complement agile, convenient, the operation is handy, automation rate is high, fuel accommodation is wide, good work defends unripe qualification. But furnace life is briefer, spray gun heat preservation should use derv or natural gas, the price is more expensive.
1, Ao Simai is special technological process of refine lead fusion 1) the workshop decorates a workshop to if the graph is shown 1 times,be decorated.
The picture pursues 1 note: Workshop of refine lead fusion is decorated 2) technological process of fusion of lead of refine of technological process of refine lead fusion is shown 2 times like the graph. By the graph 2 knowable, in the first phase (fusion) , plumbic concentrate, lead is residual and vitriolic lead is residual mix 2 oxidation silicon and limestone to add oven together inside. Oxygen of air of fuel coal, spray gun, spray gun and protective gas undertake furnishing through spray gun. The soot of all phase can be joined in fusion phase.
The picture pursues 2 note: Metal of lead of technological process of refine lead fusion and the 40wt that contain lead. The residual meeting of % arises in this one phase, after the metal is eliminated by level sex, residual leave below one phase to react. When residual capacity reachs upper limit inside furnace, to makings can pause. Bath can be reduced, pass at first add plumbic concentrate and lump coal (reductive 1) , just add lump coal subsequently (reductive 2) . In these two reductive phase, residual medium oxidation lead content decreases form plumbic metal, residual medium plumbic content is met after the process ends from 40wt. % fall to 5wt. % . Oxidation is reductive paragraph what if the graph is shown 3 times,increase stock period of time.
The picture pursues 3 note: Oxidation is reductive paragraph what increase stock period of time 2, Ao Simai is special Ao Simai of furnace structure general situation is special furnace structure is shown 4 times like the graph, cent is 3 parts: Bottom wall (include hearth and discharge a mouth) , on wall and cone. Furnace casing is become by armor plate make friends and solder according to devising measure. Coping includes spray gun opening, into makings mouth, reserve burner mouth, sample tap and more than heat boiler mouth, if pursue,5 are shown.
The picture pursues 4 note: Ao Simai is special furnace structure sketch map
The picture pursues 5 note: Ao Simai is special furnace roof sketch map all heating surface line has firebrick. Hearth bottom basically is pledged by advanced clay firebrick is mixed pound dozen of mixture to comprise. Besides taphole all round area, perpendicular bushing solders for the whole and exterior surface of furnace casing and centrum in the surface water-cooled. Furnace casing bottom has a taphole and opening of lead of a platoon, by double deck bushing (be not perpendicular bushing) around. Body of heater is propped up by case bed structure.
1) discharge a product of process of abstruse furnace fusion to be able to be passed discharge buccal eduction. Discharge a mouth to be able to pass the canal that blow oxygen or pneumatic pick to open, should shut cuttings pick-up mouth to be able to be used " mud fills in " be shut artificially or enter clay to shut through gush of gun of slimy artillery piece discharge a mouth, include a metal to discharge a mouth, slaggy discharge a mouth. Abstruse furnace uses discharge a mouth to contain two (exterior or in-house) water-cooling copper fender. Discharge a melt that is used within eduction forge. When system of buccal fender refrigeration is being discharged in forge, to discharging a mouth fender undertakes cooling, if pursue,6 are shown. Lower the rate that discharges buccal inlet to be corroded, protect the fire prevention data after water-cooling reduces interior to discharge buccal fender wear away, can stopping melt of the refrigeration after discharging, help thereby discharge a mouth to shut.
The picture pursues 6 note: Ao Simai is special because discharge susceptive of buccal fender inlet to heat up a loop to be corroded very quickly at the same time,furnace discharges buccal sketch map serious, so it is Ao Simai special furnace wears away one of the fastest components. Undertake to discharging buccal fender inlet water-cooling can lower its wear rate, because this can be reduced,change their frequency. The inlet that abstruse furnace uses is made by has machined black lead, in the wedge system that apposition takes spring at. Before forge is shut or in " urgent discharge " when, use metal discharges a mouth to regard as discharge the melt inside buccal general forge completely all eduction.
2) the bed before electric heat of the bed before electric heat is to use those who yield at holding abstruse heat to contain lead 5% of the left and right sides eventually broken bits, eventually does broken bits flow into 20 × 3.162m through broken bits chute? the bed before electric heat, the bed before electric heat makes lead precipitates further the smoke that evacuation changes furnace to undertake zincic broken bits into smoke turns operation, design broken bits tall 1.3m, the plumbic classics lead that precipitation gives discharges a mouth to emit into plumbic bag, classics lead wraps boiler of swing infuse lead, broken bits discharges a mouth to put residue smoke to turn heat regularly, when smoke changes furnace to overhaul before bed broken bits can pass store up of water temper by dipping in water, return smoke to turn heat next. The bed before electric heat is opposite through electrode of 3 black lead slaggy have thermal insulation, power source is brought from room of distribution of air-blower room 10kV, transformer of the bed before the electrode that the control of temperature of regular job time base is the bed before be being extended through control is mixed undertakes controlling, 3 electrode undertake controlling through be located in 3 9 meters tall windlass.
3) wind cold motherboard abstruse hearth ministry by prop up the steel on case bed to pledge motherboard is comprised. When forge is designed and be installed, for forge steel simple case be heated expands stay have rich amount. Bottom passes a when install on hearth fireproof material to have heat insulation. Wind is cold because last,prevent motherboard be heated and happen be out of shape. Wind is cold arise by natural convection. The case bed that open wide facilitates bottom airiness. What need special attention accordingly is bottom cannot be enclothed, sealed or close, if pursue,7 are shown.
The picture pursues 7 note: Sketch map of wind cold motherboard 4) interior of water-cooling crust forge uses fireproof liner, at the same time exterior crust also needs to undertake cooling, last in order to prevent be heated and happen be out of shape. The cooling method of this one low intensity can not is opposite the quantity of heat that comes out by fireproof liner has too big effect, a can cooling caky crust " hot side " one layer slag is below the circumstance of fireproof material invalidation protect exterior steel simple case, it is safe gain time stopping furnace thereby. Water-cooling crust design used design of road of collateral water-cooling annulus, because of this amid system of the water-cooling after invalidation of an annulus road still can continue move, can be in thereby can accuse the safety below the condition to stop furnace.
5) Ao Simai of Ausmelt spray gun is special spray gun structure is shown 8 times like the graph, interior is in charge of composition by concentric locking collar of 4 stainless steel. The fuel of spray gun interior (fine coal) , the wind that mix oxygen, spray gun wind, sleeve wind can be received repeatedly in belonging to respective conduit, spray gun substantially can divide for two functions area: Part of above of spray gun installing plate and spray gun installing plate are the following part. Part of installing plate above provided the link of craft conduit, this part promotion to spray gun and the effect with secure a move main. Gripper shoe bottom is the homocentric tube that inserts forge. Spray gun is full-length 20.86m, the length inside furnace under 12.6m. Mix oxygen wind among them the canal is the shortest, canal of spray gun wind is the longest, sleeve wind canal stops to flow at coming back implement upper part, fine coal canal is outspread to come back stream implement lower part.
The picture pursues 8 note: Spray gun sketch map 6) the action of burner of heat preservation of heat preservation burner has: Be new lining is roast with warm-up; 2 it is cold, the reheat of hot stove; 3 it is the heat preservation after removing spray gun. Furnace pressure always is maintained in - 250 ～ 50Pa (gauge pressure) , it is very important that blaze appearance keeps long and narrow, because if blaze is direct,pound furnace wall, what can bring about lining is serious denude. Before arriving at the chamber of a stove or furnace, long blaze still can get sufficient blaze, reduce waste. Burner regards his as main fuel origin use light diesel fuel, use air serves as oxidizer. Warm up in furnace in the process, burner must be mixed with larger combustion air flow fuel flow in order to make furnace warms up, intensity as a child igneous discharge rises to warm up the largest flow of evening, reserve of burner " nominal and rated parameter " answer certainly can maintain furnace temperature in 1200 ℃ , supply quantity of heat should the loss of total quantity of heat of enough complement furnace. Among them the quantity of heat that the loss of total quantity of heat of furnace does not include exhaust emission to take away.
7) picture of spray gun position pursues 9 note: Sketch map of spray gun position
Sketch map of spray gun position is shown 9 times like the graph. The position 1 for berth. Spray gun is complete from furnace retractile, makings shedding stops the belongings inside spray gun, undertake gun head interior is checked. The position 2 for most advanced enter. Spray gun head is located in in spray gun mouth. Spray gun from the position 2 drop in the process, open is exterior air (spray gun wind) in order to assure the refrigeration with proper spray gun. The position 3 to clean, main function is all odd fuel in moving to except corresponding gush barrel and oxygen. The position 4 for ignition. Connect spray gun fuel, then spray gun catchs fire. Buy of v/arc be on the throne 4, shower nozzle uses position of heat preservation burner at. The position 5 to maintain. Spray gun makes furnace is maintained temperature is operated in what maintain a condition to fall. When heat preservation burner works, do not allow to fall spray gun to the position 5 the following. The position 6 for splash, it is the top position of spray of abstruse furnace splash, basically be to make spray gun hangs broken bits, in order to achieve adiabatic to its goal, such meetings add the service life of spray gun. The position 7 for the operation, point to spray gun " operate " , its include the place all positions with 6 the following located shower nozzle, but do not make spray gun arrives commonly be apart from hearth 150 ㎜ place.
3, the problem that refine lead Ao Simai exists in furnace use process especially 1) spray gun service life is brief and material price is very high Ao Simai is special furnace refine lead is process of smelt of aggrandizement of a kind of high temperature, lead is had caustic, use gush coal technology at the same time, shorten quickly spray gun life. To solve this problem, the material price that spray gun uses is very high. 2) flue gas temperature is higher this makes inside furnace of flue gas transgression when can carry a large number of soot, purify to tail gas raised negative charge. 3) fireproof material uses up smelt temperature high furnace fast, cost is higher. 4, refine lead Ao Simai is special the development trend of furnace 1) strengthen system of spray gun refrigeration to cool through spray gun, hang broken bits quickly, use broken bits layer to protect spray gun noumenon thereby. 2) optimize the structure inside furnace to basically block the measure such as the wall to change contrail of flue gas flow through adding, make full use of then inertial remove dust, the action that enlarge gravity removes dust, in order to reduce soot amount. 3) introduce splash broken bits to protect furnace link to make full use of broken bits layer will protect lining.
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