CN103344107A - Device and method for respectively producing metal and fire-resistant materials or construction materials through one-time heating - Google Patents
Device and method for respectively producing metal and fire-resistant materials or construction materials through one-time heating Download PDFInfo
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- CN103344107A CN103344107A CN2013103096529A CN201310309652A CN103344107A CN 103344107 A CN103344107 A CN 103344107A CN 2013103096529 A CN2013103096529 A CN 2013103096529A CN 201310309652 A CN201310309652 A CN 201310309652A CN 103344107 A CN103344107 A CN 103344107A
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Abstract
The invention relates to a device and method for reducing metal from waste materials, in particular to a device and method for respectively producing metal and fire-resistant materials or construction materials through one-time heating. A rotary furnace discharge outlet is connected with a metal slag charge separation furnace. The two ends of a rotary furnace are provided with sealing rings. The rotary furnace sealing rings and a metal barrel body outside the rotary furnace form a U-shaped groove. A cooling air nozzle is arranged in the U-shaped groove. A cooling air main pipeline is arranged on the outer side of the rotary furnace. A material sliding tube is arranged in a rotary furnace feed inlet. A furnace tail sealing cover is arranged outside the rotary furnace feed inlet and is connected with a sealing passage. A fuel coal gas burner is arranged on the sealing passage. A separating furnace sealing ring is arranged in the connecting position of the rotary furnace and the metal slag charge separation furnace. A high-pressure restoration gas spray gun is arranged on the front wall of the furnace. A plurality of flat flame burners are arranged in the metal slag charge separation furnace. A furnace top is connected with a fire blocking wall. A device discharge outlet is formed in the back wall of the furnace. The device and method for respectively producing metal and fire-resistant materials or construction materials through one-time heating can sufficiently recover metal in metallic oxide mines or industrial oxide waste residue, and can convert the residual slag charge into useful products.
Description
[technical field]
The present invention relates to the apparatus and method of waste material reducing metal, be specifically related to once heat the apparatus and method of difference output metal and fire-resistant or construction material.
[background technology]
No matter be in the ores containing metal oxides in metal recovery or the industrial residue metal oxide metal recovery comprise mainly that pyrogenic process reclaims and two kinds of hydrometallurgic recovery.Wherein pyrogenic process production comprises method productions such as blast furnace air stove, reverberatory furnace, tunnel cave, rotary hearth furnace+molten branch stove, the hot stove in rotary kiln+ore deposit.
The blast furnace blast furnace smelting is to use coke that the required heat of fusing mineral aggregate or waste residue is provided and as reducing agent.And mineral aggregate or waste residue need carry out sintering with sintering machine before adding shaft smelting.Owing to the cost height of coke, therefore cause the cost height of shaft smelting, and operating environment is poor, seriously polluted.And sintering also consumes a large amount of energy, and environment is poor, and is seriously polluted, and causes whole complex process.
Reverberatory furnace is that heat mainly adds thermal material by furnace wall, furnace roof reflection, and the thermal efficiency is low; And single heat periodical operation, inefficiency.
Tunnel cave adopts direct reducing metal to carry out crystallization, broken back is by magnetic separation, gravity treatment, water-washing method separating metal and slag, but the metal that the method is produced is carried 20～30% slag charges secretly, and later process needs to spend big energy deposite metal and slag charge again, waste energy, and the heavy metal pollution water source.
Prereduction is dried earlier in rotary hearth furnace+molten stove system that divides, then by combustion gas heating edge reduction fusing of marginization, last slag and metal are drawn respectively, this method has been avoided the heating that repeats of metal, but material rotary hearth furnace be heated to earlier 1200 ℃ return then be as cold as 800～900 ℃ again hot charging advance to melt to divide a stove, material has 400 ℃ of heating back and forth, wastes energy and production capacity; Simultaneously because material needs hermetically sealed can to transport back and forth, in the time of existing temperature loss, investment is big; And molten stove and the rotary hearth furnace of dividing can't communicate, and molten reducing atmosphere and the heat of stove of dividing can't be used for rotary hearth furnace, and overall thermal efficiency is low.
The hot stove in rotary kiln+ore deposit also is oven dry prereduction earlier, hermetically sealed can transports the hot stove energising in the ore deposit of packing into and is heated to 1450～1600 ℃ of smelting reductions then, same owing to the hot stove of rotary kiln and ore deposit is independently arranged, material in the rotary kiln heating-up temperature less than 1000 ℃, tinning is carried will lose 100 ℃, needs behind the hot stove in ore deposit of packing into then with expensive electricity to its heating, so will electricity consumption heat up 550～700 ℃ in the hot stove in ore deposit, the energy unreasonable allocation, and the reducing gas of the hot stove in ore deposit and heat can not be used for rotary kiln.
More than the common disadvantage of all technologies be exactly not with slag charge as the fine processing and utilizing of resource, do not consider taking full advantage of of high temperature slag charge heat yet;
[summary of the invention]
In order to remedy deficiency of the prior art and defective, the present invention is intended to by using the environment-protecting high-heat energy one time as far as possible, and slag resource and the energy after the metal recovery also fully utilizes in mineral, industrial residue.
To achieve these goals, design the device of a kind of once heating difference output metal and fire-resistant or construction material, comprise slipping and expect pipe 1, stove tail seal closure 2, rotary furnace sealing ring 3, rotary furnace 4, metal cylinder 5, refrigerating gas trunk line 6, refrigerating gas nozzle 7, seal channel 8, coal burning and gas burning burner 10, firebreak 11, furnace roof 12, high pressure reducing gas spray gun 19, stokehold wall 20, flat-flame burner 21, furnace bottom 22, metal slag charge chamber furnaced 23 and chamber furnaced sealing ring 30, it is characterized in that described rotary furnace 4 discharging openings link to each other with metal slag charge chamber furnaced 23 furnace chambers by the cavity that seal channel 8 constitutes, rotary furnace 4 two ends feeding mouths and discharging opening place are provided with rotary furnace sealing ring 3 respectively, described rotary furnace sealing ring 3 is U-shaped metallic framework, rotary furnace sealing ring 3 constitutes U-shaped groove with the metal cylinder 5 of rotary furnace 4 outsides, be provided with some refrigerating gas nozzles 7 in the U-shaped groove, some refrigerating gas nozzles 7 connect refrigerating gas trunk line 6, refrigerating gas trunk line 6 is installed in rotary furnace 4 outsides, rotary furnace 4 feeding mouth places are provided with to slip expects pipe 1, rotary furnace sealing ring 3 outsides, rotary furnace 4 feeding mouth place are provided with stove tail seal closure 2, rotary furnace sealing ring 3 outsides, rotary furnace 4 discharging opening place connect seal channel 8, seal channel 8 is provided with coal burning and gas burning burner 10, described metal slag charge chamber furnaced 23 furnace chambers are by furnace roof 12, furnace bottom 22, wall is formed behind stokehold wall 20 and the stove, described rotary furnace 4 is provided with chamber furnaced sealing ring 30 with metal slag charge chamber furnaced 23 junctions, described stokehold wall 20 is provided with high pressure reducing gas spray gun 19, described metal slag charge chamber furnaced 23 is provided with some flat-flame burners 21, described by furnace roof 12 connection firebreaks 11, wall is provided with the device discharging opening behind the stove.
The present invention also has following optimizing structure:
Described device also comprises shotgun spout 13, slag blocking wall 14, ingredients mouth 15, gas outlet 16, stock retaining wall 17, device discharging opening 18, flat-flame burner 21, furnace bottom 22, metal slag charge chamber furnaced 23, matter homogenizing stove 24, bubbling mouth 25, wall 27 behind Mo electrode 26 and the stove, described seal channel 8 is provided with sealing charge door 9, described metal slag charge chamber furnaced 23 furnace chambers are by furnace roof 12, furnace bottom 22, stokehold wall 20 and slag blocking wall 14 are formed, furnace roof 12 is provided with shotgun spout 13, metal slag charge chamber furnaced 23 furnace chambers are communicated with matter homogenizing stove 24 furnace chambers by slag blocking wall 14 foot passages, matter homogenizing stove 24 furnace chamber tops are provided with ingredients mouth 15 and gas outlet 16, matter homogenizing stove 24 furnace chambers bottom is provided with some bubbling mouths 25, matter homogenizing stove 24 furnace chamber right parts one side is provided with stock retaining wall 17, matter homogenizing stove 24 is provided with some flat-flame burners 21 and Mo electrode 26, wall 27 is provided with device discharging opening 18 behind the stove, matter homogenizing stove 24 furnace chamber communication apparatus discharging openings 18.
The inclination angle is installed and is provided with in described rotary furnace 4 accumbency, rotary furnace 4 outsides are provided with the metal cylinder 5 of rotation, rotary furnace 4 inwalls shop refractory material, suitable for reading by seal channel and baking material process, waste heat boiler, dust arrester connects, and be provided with and slip material pipe 1, rotary furnace 4 discharging openings and metal slag charge chamber furnaced 23 join by seal channel, the rotary furnace discharging opening that rotates adopts U-shaped framework, the U-shaped framework outside is seal channel one side coating fire-resistant material, establish fixing refrigerating gas trunk line 6 along cylindrical shell outside one week, trunk line upper edge cylindrical shell circumference is laid refrigerating gas nozzle 7, stretches into U-shaped groove cool metal framework, and coal burning and gas burning burner 10 is installed on the discharging opening opposite simultaneously; One end of metal slag charge chamber furnaced 23 is provided with the gas outlet, the gas outlet becomes sealing ring along one week of rotating cylinder with refractory material casting, in be embedded with cooling water pipe and the cooling main tracheae, main tracheae is evenly installed gas nozzle along circumference one circle, the nozzle direction is towards the center of circle of cylindrical shell, and exposes the refractory material circle slightly; Be blown into the rotary seal circle and the fixing seal ring gap reaches sealing purpose by refrigerating gas; Metal slag charge chamber furnaced 23 is provided with charging aperture, gas outlet, furnace roof shot spray material port, firebreak, preceding headwall installation high pressure reducing gas spray gun 19, side wall installation flat-flame burner 21, metal notch 28, accident treatment mouth 29, laterally furnace bottom adopts U-shaped, vertically furnace bottom fusion zone base plane is provided with angle of declination, the Disengagement zone base plane is level, the purifying area base plane is provided with top rade, and the metal separation stove communicates by siphon passage and slag charge homogenizing furnace; Dog-house is established in matter homogenizing stove 24 furnace roof fusion zones, homogenization zone sets out gas port, the side wall fusion zone is provided with flat-flame burner 21, homogenization zone is installed Mo electrode 26 in the middle of establishing flat-flame burner 21 or slag blanket, the furnace bottom portraitlandscape all adopts at the bottom of the horizontal stove, and furnace bottom is established the bubbling mouth in fusion zone and homogenization zone interface, also establishes the bubbling mouth at the material outlet place, homogenizing furnace adopts siphon passage to link to each other with device discharging opening 18, offers opening in the described bonnet tail sealing 2.
Described flat-flame burner 21 can replace with Mo electrode 26.
Described rotary furnace 4 rotating parts and fixed metal slag charge chamber furnaced adopt the sealing gland form to be connected.
Described rotary furnace sealing ring 3 adopts U-shaped metal framework, and the U-shaped framework outside is that the seal channel inwall covers the refractory material sealing ring of being done support by reinforcement and hangnail.
The refractory material casting sealing ring that the part that described metal slag charge chamber furnaced was connected along one week of rotary furnace rotary seal circle adopts pre-buried cooling water pipe and cooling tracheae and hangnail to strengthen, evenly lay gas nozzle along the cooling tracheae, nozzle is towards the rotating cylinder center of circle and expose refractory surface.
The seal channel of described coal burning and gas burning burner 10 and metal slag charge chamber furnaced 23 adopts the gas mode to seal.
The seal channel that described rotary furnace 4 and metal slag charge chamber furnaced 23 communicate is provided with dosing hole.
The purifying area furnace roof of described metal slag charge chamber furnaced 23 is provided with material spraying hole, configuration sealed inert gas shotgun spray material port, furnace wall, Disengagement zone one side of described metal slag charge chamber furnaced 23 is provided with metal notch, and the Disengagement zone opposite side of described metal slag charge chamber furnaced 23 is provided with the accident flow export.
Described flat-flame burner 21 burner centers ejection oxygen rich gas, combustion gas is sprayed by the outer ring, and combustion gas and oxygen rich gas fully mix in the exit.
Described high pressure reducing gas spray gun 19 is located on the wall of stokehold, be positioned at headwall top of the slag top, sealing ring place, the spray gun tilt angled down is consistent with the vertical angle of furnace bottom, described high pressure reducing gas spray gun inner ring leads to oxygen, the outer ring leads to reducing gases, the contain H of described reducing gases for producing by natural gas or coal gas catalytic cracking
2Reach strong reducing gases more than 70% with CO gas.
Described matter homogenizing stove 24 both sides are furnished with the Mo electrode, and the Mo electrode inserts in the slag blanket, and matter homogenizing stove 24 fusion zones and homogenization zone interface furnace bottom arrange the bubbling hole, and homogenization zone 2/3rds place's furnace bottoms arrange the bubbling hole.
The present invention also comprises a kind of production technology that adopts the device of above-mentioned once heating difference output metal and fire-resistant or construction material, described production technology is divided into the rotary furnace pan feeding, baking, roasting, first reducing zone C1), chamber furnaced is joined auxiliary material, fusing, reducing zone (C2), the chamber furnaced reduction, metal separation district (C3), described rotary furnace and metal slag charge chamber furnaced communicate by seal channel, reducing atmosphere and waste heat offer rotary furnace in the metal slag charge chamber furnaced, and the baked furnace charge of rotary furnace falls in the chamber furnaced, the high-speed gas of high pressure reducing gas boundling rifle ejection promotes to move to certain orientation on the stove headwall and furnace charge is placed in chamber furnaced, again by the flat flame gun heat fused of combustion gas oxygen enrichment material on the sidewall, and utilize that metal is different with slag charge proportion to be realized separating of metal and slag.
This technology has following prioritization scheme:
Described production technology also comprises slag charge purifying area C4, the modified fusion zone C5 of homogenizing furnace material, matter homogenizing district C6, described metal slag charge chamber furnaced and matter homogenizing stove communicate by siphon passage, homogenizing furnace fusion zone furnace roof is adjusted the slag charge composition by charge door, by the flat flame gun heat fused of combustion gas oxygen enrichment material on the furnace sidewall, at the homogenization zone sidewall Mo bar electrode heating homogenizing of inserting in the material is installed again, materials allocating is become required composition.
The present invention is intended to by use the environment-protecting high-heat energy one time as far as possible, and slag resource and the energy in mineral, industrial residue after the metal recovery also fully utilize, utilize this device when metal fully reclaims in ores containing metal oxides or the technical oxide waste residue, also will remain slag charge and be transformed into useful product, thereby the cost energy consumption is very low, the seal operation environment is good, pollutes and lacks, and technology is simple.
(pyrogenic processes such as Cr, Ni, Fe, Cu reclaim and the system of fire-resistant, heat insulation, fire proofing or decoration construction material synchronous production comprises: rotary furnace, metal slag charge chamber furnaced and matter homogenizing stove according to metal in a kind of ores containing metal oxides of the embodiment of the invention or the industrial residue.
Metal slag charge chamber furnaced furnace roof is established firebreak and shot spray material port, and firebreak be used for to keep in the burner hearth temperature even, and steady air current, shot spray gun are used for isolated slag charge is further purified; The chamber furnaced furnace bottom laterally adopts U-shaped furnace bottom, and vertically the declivity furnace bottom is adopted in the fusion zone, and adopt at the bottom of the horizontal stove Disengagement zone, and purifying area adopts the updip furnace bottom.The stove headwall is established high pressure reduction boundling spray gun, and spray gun is in sets that the top of the slag is gone up slightly and with the same angle declivity of furnace bottom; Side wall is installed flat flame oxygen rich fuel gas rifle; One side is provided with the metal liquid stream outlet in the Disengagement zone, and opposite side is provided with the accident treatment mouth.
Metal slag charge chamber furnaced and slag charge homogenizing furnace are connected by siphon passage.
The slag charge homogenizing furnace divides reinforced fusion zone and slag charge homogenization zone, and the fusion zone furnace roof is established the sealing charge door, and the homogenization zone furnace roof sets out gas port; Furnace bottom adopts at the bottom of the horizontal stove, and the furnace bottom height is wanted a little higher than setting metal bath surface; The fusion zone side wall is installed the oxygen enrichment flat-flame burner; Fusion zone and homogenization zone interface and homogenization zone rear end furnace bottom are established the bubbling hole; Homogenization zone liquid level middle part side wall is established the Mo electrode, heating homogenizing material.
Flat-flame burner designing requirement outer ring delivery of fuel gas, endoporus is carried oxygen enrichment, fully mixes in the exit.
(float glass line, water-cooled pair roller line, foaming line, wire drawing line etc. join homogenizing furnace by siphon passage and next procedure.
[description of drawings]
Fig. 1 is function division figure of the present invention
Fig. 2 is structural representation of the present invention
Fig. 3 is the vertical view of Fig. 2
Fig. 4 is the rotary furnace profile
Fig. 5 is rotary furnace sealing ring and chamber furnaced sealing ring profile
Fig. 6 is metal slag charge chamber furnaced longitudinal sectional drawing
Fig. 7 is A-A face profile
Fig. 8 is matter homogenizing stove profile
1 slide material pipe among the figure, 2 stove tail seal closures, 3 rotary furnace sealing rings, 4 rotary furnaces, 5 metal cylinders, 6 refrigerating gas trunk lines, 7 refrigerating gas nozzles, 8 seal channels, 9 sealing charge doors, 10 coal burning and gas burning burners, 11 firebreaks, 12 furnace roofs, 13 shotgun spouts, 14 slag blocking walls, 15 ingredients mouths, 16 gas outlets, 17 stock retaining walls, 18 discharging openings, 19 high pressure reducing gas spray guns, 20 stokehold walls, 21 flat-flame burners, 22 furnace bottoms, 23 metal slag charge chamber furnaceds, 24 matter homogenizing stoves, 25 bubbling mouths, the 26Mo electrode, wall behind 27 stoves, 28 metal notches, 29 accident treatment mouths, 30 chamber furnaced sealing rings, 31 reinforcements, 32 hangnails, 33 cold gas trunk lines, 34 gas nozzles, 35 water cooling tubes.
[specific embodiment]
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical or similar label is represented identical or similar elements or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, term " on ", orientation or the position relation of indication such as D score " top " " end ", only be the present invention for convenience of description rather than require the present invention therefore can not be interpreted as limitation of the present invention with specific orientation structure and operation.
Reclaim according to pyrogenic processes such as Metal Cr, Ni, Fe, Cu in a kind of ores containing metal oxides of the present invention or the industrial residue in detail and the system of fire-resistant, heat insulation, fire proofing or decoration construction material synchronous production below in conjunction with accompanying drawing.
Be provided with rotary furnace 4, sealing gland sealing ring 3, metal slag charge chamber furnaced 23, slag charge homogenizing furnace 24 as shown in Figure 1, 2, 3 according to apparatus of the present invention, be divided into 5 functional areas, the drying materials roasting is reducing zone rotary furnace C1, smelting reduction district chamber furnaced C2, reduction Disengagement zone chamber furnaced C3, slag charge purifying area chamber furnaced C4, batching fusion zone homogenizing furnace C5, matter homogenizing district homogenizing furnace C6 just.
Be depicted as rotary furnace according to apparatus of the present invention such as Fig. 1,2,3,4, the metallic cylinder that the rotary furnace of doing is placed for accumbency at a certain angle and rotated with certain speed, the upper end is provided with static material and flows into elephant trunk 1 and seal closure 2; Rotary furnace 4 internal chamber walls cover with refractory brick, lower end such as Fig. 1,2,5 are depicted as U-shaped metallic framework and are the refractory material sealing ring on basis, be provided with static refrigerating gas in one week of sealing ring and be responsible for 6, trunk line is evenly installed gas nozzle 7 along circumference, nozzle inserts U-shaped groove, by gases at high pressure rotary seal circle groove metal cylinder is forced cooling.
Shown in Fig. 1,2,6, the seal channel 8 that rotary furnace and metal slag charge are piled up by refractory material casting or refractory brick, the rotary furnace feed opening is the chamber furnaced feeding mouth, and the chamber furnaced feeding mouth is the chamber furnaced gas outlet, realized the convection current of material and heat, and realized evenly feeding in raw material continuously, pipelining, and heat and reducing atmosphere in the chamber furnaced are taken full advantage of by rotary furnace.
As shown in Figure 5, the static sealing ring of metal slag charge chamber furnaced and rotary furnace sealing ring correspondence adopts the castable refractory cast equally, wherein pre-buried air cooling trunk line 33, nozzle 34 and water cooled pipeline 35, evenly lay gas nozzle 34 at main cooling tracheae 33 along one week of rotating cylinder, also expose the fire proofed wood charge level slightly facing to the cylindrical shell center of circle, when ventilation is carried out air seal to being connected the gap, the sealing ring of cooling periphery.
Shown in Fig. 2,5, metal slag charge chamber furnaced is established firebreak 11 and shot gun slot 13, and the fine heat that protects the chamber furnaced burner hearth of firebreak can not siphoned away by rotary furnace very soon, has stablized fire box temperature, and the while is the fine reducing atmosphere that protects burner hearth also; The shotgun spout 13 that is positioned at the slag charge purifying area can evenly be squeezed into slag charge by force with the slag charge cleanser, makes slag charge reach good clean-up effect.
Shown in Fig. 6,7, metal slag charge chamber furnaced furnace bottom adopts U-shaped furnace bottom, prevents that refractory brick from floating under metal liquid high specific gravity situation.Inclined furnace bottom is down adopted in the vertical C2 of furnace bottom fusion zone, is convenient to material vertically move; Adopt at the bottom of the horizontal stove C3 Disengagement zone, is convenient to the metal slag charge and separates; Vertically the C4 purifying area adopts and goes up oblique furnace bottom, and purpose is further to make metal to separate with slag charge, and metal liquid flows back to metal bath, and slag charge obtains fine modified simultaneously.Require to emit the metal bath surface height of setting behind a certain amount of metal bath surface in regularity simultaneously and must guarantee to cover whole chamber furnaced liquid level, so just can guarantee newly to go into the stove material and float on metal bath surface, be convenient to the tiling of material.
As shown in Figure 1, high pressure reducing gas spray gun 19 is installed at preceding headwall 20 places, for well, spray gun is downwards with furnace bottom tilt angled down unanimity with a little higher than setting top of the slag for the spray gun height; Spray gun promotes material and flows to the Disengagement zone to when just having gone into stove material heat fused; At the equal horizontally disposed flat-flame burner 21 of chamber furnaced and homogenizing furnace fusion zone side wall, be used for fusing, add thermal material.
As shown in Figure 2, slag blocking wall 17 is fine keeps apart metal slag charge chamber furnaced 23 and matter homogenizing stove 24, and they carry out Flow of Goods and Materials by siphon passage; Metal slag charge chamber furnaced belongs to the reducing atmosphere stove, and the slag charge homogenizing furnace belongs to atmosphere furnace, communicates by siphon passage and can accomplish independent operation separately, the non-interfering while, can well produce continuously again.
As shown in Figure 7, chamber furnaced 23 1 sides are provided with metal liquid flow export 28; Opposite side is provided with accident treatment mouth 29, and accident treatment mouth lower end and arc furnace bottom are minimum to maintain an equal level.
Shown in Fig. 2,8, homogenizing furnace fusion zone furnace roof is provided with sealing dog-house 15, is used for the needed material of the corresponding product that slag charge lacked is dropped in the stove, and the slag charge composition is adjusted; The homogenization zone furnace roof is provided with gas outlet 16, the gas in the stove is introduced roasting procedure by seal channel the required material in fusion zone is toasted and heat up.
Shown in Fig. 2,3,8, by 1/3rd places at the bottom of the pond Mo electrode is installed at the homogenization zone pool depth, be used for solution temperature control and homogenizing.
Shown in Fig. 2,3,8, the homogenizing furnace furnace bottom adopts at the bottom of the open hearth, is convenient to movement and the homogenizing of solution; Furnace bottom is established the bubbling mouth in fusion zone and homogenization zone, and solution pool is formed gas wall, stops the too fast homogenization zone that enters of fusion zone material; Establish the bubbling mouth at homogenization zone by back wall 1/27th 3 place's furnace bottom, furnace bottom solution is exchanged up and down, temperature reaches the uniform while, and each composition of material is good homogenizingization also.
Shown in Fig. 1,2,3,8, at production lines such as homogenizing furnace back configuration float glass or marbles, homogenizing furnace and next procedure communicate by siphon passage.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out changeableization, modification, replacement, distortion to these embodiment under the situation that does not break away from this practical principle and aim, scope claim of the present invention and equivalent thereof limit.
Embodiment 1:
Certain ore deposit contains Fe
2O
370%, TiO
215%, SiO
222%, at first prepare burden, by going back 8～20 parts in raw coal, 70～90 parts in ore deposit, 5～10 parts of cosolvents, make after the ball drying by elephant trunk 1 the material rotary furnace of packing into, by revolution in 4～7 hours, material is heated to 1100～1380 ℃, through overbaking, roasting, physical-chemical reactions such as reduction, the percent reduction of metallic iron reaches more than 90%, the semi-molten material falls into slag charge metal separation stove 23 then, the boundling reduction rifle of installing by headwall 20 places 19 sprays into contain H2 and the CO gas that produce by the natural gas catalytic cracking and reaches 70% strong reducing gas and force reduction again, make percent reduction further bring up to 95～99%, and the material that promotes to float on the metal liquid by gases at high pressure travels forward, thereby be further heated, temperature of charge reaches 1450～1600 ℃ and melt, thereby has realized separating of slag and metal; The metal molten iron carries out cast iron by flow export 28 inflow ladles or heat is sent smelting.
If desired, the shotgun spout 13 that can arrange on top, regional C4 zone sprays into strong reductant, and the metal Fe content in the slag charge is further reduced.
The residue slag charge is got rid of chamber furnaced 23 by the siphon passage that is arranged on regional C3 or C4, carries out shrend and forms industrial residue.
Because TiO in the residue waste residue
2Content is raised to 45%, has in fact become extraordinary titanium white fine ore, and because the Fe content in the slag be micro-, production technology that will more suitable existing titanium dioxide than the employed ilmenite of present titanium dioxide.
Be the flame of oxygen enrichment reducing atmosphere because the flat-flame burner installed of chamber furnaced 23 side walls sprays, the rifle 19 of boundling reduction simultaneously sprays into the gas into strongly reducing atmosphere, therefore be full of the gas of reducing atmosphere in the whole chamber furnaced, these gases enter rotary furnace by the passage that communicates with rotary furnace, again by fire coal or gas gun 10, spray into the gas of oxidizing atmosphere, the reducing gas that chamber furnaced the is overflowed material in the heating rotary stove that is fully burned.
Certain lateritic nickel ore contains Ni1.8%, contains Fe20%, MgO12%, SiO
220%, H
2O34%, at first using the waste heat of rotary furnace 4 that material is baked to water content is 8～15%, prepare burden again, by going back 8～25 parts in raw coal, 70～90 parts in oven dry ore deposit, 5～12 parts of abundant mixed pelletizings of cosolvent, again by elephant trunk 1 with the material rotary furnace of packing into, by revolution in 4～7 hours, material is heated to 1100～1380 ℃, through overbaking, roasting, physical-chemical reactions such as reduction, the percent reduction of metallic iron reaches more than 90%, the semi-molten material falls into slag charge metal separation stove 23 then, the boundling reduction rifle of installing by headwall 20 places 19 sprays into contain H2 and the CO gas that produce by the natural gas catalytic cracking and reaches 70% strong reducing gas and force reduction again, make percent reduction further bring up to 95～99%, and the material that promotes to float on the metal liquid by gases at high pressure travels forward, thereby be further heated, temperature of charge reaches 1450～1600 ℃ and melt, thereby has realized separating of slag and metal; The metallic nickel molten iron carries out cast iron by flow export 28 inflow ladles or heat is sent smelting.
The slag that metal has been separated still contains 1～3% Fe, directly influences the use of slag, by the shotgun that C4 district furnace roof arranges, squeezes into strong reductant, makes Fe content in the slag charge less than 1%; Slag charge enters matter homogenizing stove 24 by siphon passage then.
Allocate 5～15 parts of spodumenes into by C5 district furnace roof ingredients mouth, 2～10 parts of cosolvents spray into the oxidizing atmosphere flame heat by the oxygen enrichment flat-flame burner and melt material; By the first road bubbling mouth, make material be melted fully, heat, stir then, reach abundant mixing, the uniform material of temperature enters matter homogenizing district C6; The material that enters homogenization zone C6 obtains good homogenizing and samming, and make material be in the needed steady temperature of later process by Mo electrode 26, and under the adjustment of road, back bubbling mouth, make material temperature further even, enter roller briquetting machine by siphon passage again and be pressed into microcrystal glass plate, use as Building Decoration Material.
Be the flame of oxygen enrichment reducing atmosphere because the flat-flame burner installed of chamber furnaced 23 side walls sprays, the rifle 19 of boundling reduction simultaneously sprays into the gas into strongly reducing atmosphere, therefore be full of the gas of reducing atmosphere in the whole chamber furnaced, these gases enter rotary furnace by the passage that communicates with rotary furnace, again by fire coal or gas gun 10, spray into the gas of oxidizing atmosphere, the reducing gas that chamber furnaced the is overflowed material in the heating rotary stove that is fully burned.
The hot gas of matter homogenizing stove is introduced dryer by the gas outlet of C6 furnace roof with waste heat will dry and preheating by the material that C5 district furnace roof adds.
Claims (15)
1. one kind is once heated the device of distinguishing output metal and fire-resistant or construction material, comprise slipping and expect pipe (1), stove tail seal closure (2), rotary furnace sealing ring (3), rotary furnace (4), metal cylinder (5), refrigerating gas trunk line (6), refrigerating gas nozzle (7), seal channel (8), coal burning and gas burning burner (10), firebreak (11), furnace roof (12), high pressure reducing gas spray gun (19), stokehold wall (20), flat-flame burner (21), furnace bottom (22), metal slag charge chamber furnaced (23) and chamber furnaced sealing ring (30), it is characterized in that described rotary furnace (4) discharging opening links to each other with metal slag charge chamber furnaced (23) furnace chamber by the cavity that seal channel (8) constitutes, rotary furnace (4) two ends feeding mouth and discharging opening place are provided with rotary furnace sealing ring (3) respectively, described rotary furnace sealing ring (3) is U-shaped metallic framework, rotary furnace sealing ring (3) constitutes U-shaped groove with the metal cylinder (5) of rotary furnace (4) outside, be provided with some refrigerating gas nozzles (7) in the U-shaped groove, some refrigerating gas nozzles (7) connect refrigerating gas trunk line (6), refrigerating gas trunk line (6) is installed in rotary furnace (4) outside, rotary furnace (4) feeding mouth place is provided with to slip expects pipe (1), rotary furnace (4) feeding mouth place rotary furnace sealing ring (3) outside is provided with stove tail seal closure (2), rotary furnace (4) discharging opening place rotary furnace sealing ring (3) outside connects seal channel (8), seal channel (8) is provided with coal burning and gas burning burner (10), described metal slag charge chamber furnaced (23) furnace chamber is by furnace roof (12), furnace bottom (22), wall is formed behind stokehold wall (20) and the stove, described rotary furnace (4) is provided with chamber furnaced sealing ring (30) with metal slag charge chamber furnaced (23) junction, described stokehold wall (20) is provided with high pressure reducing gas spray gun (19), described metal slag charge chamber furnaced (23) is provided with some flat-flame burners (21), described by furnace roof (12) connection firebreak (11), wall is provided with the device discharging opening behind the stove.
2. the device of output metal and fire-resistant or construction material is distinguished in a kind of once heating as claimed in claim 1, it is characterized in that described device also comprises shotgun spout (13), slag blocking wall (14), ingredients mouth (15), gas outlet (16), stock retaining wall (17), device discharging opening (18), flat-flame burner (21), furnace bottom (22), metal slag charge chamber furnaced (23), matter homogenizing stove (24), bubbling mouth (25), wall (27) behind Mo electrode (26) and the stove, described seal channel (8) is provided with sealing charge door (9), described metal slag charge chamber furnaced (23) furnace chamber is by furnace roof (12), furnace bottom (22), stokehold wall (20) and slag blocking wall (14) are formed, furnace roof (12) is provided with shotgun spout (13), metal slag charge chamber furnaced (23) furnace chamber is communicated with matter homogenizing stove (24) furnace chamber by slag blocking wall (14) foot passage, matter homogenizing stove (24) furnace chamber top is provided with ingredients mouth (15) and gas outlet (16), matter homogenizing stove (24) furnace chamber bottom is provided with some bubbling mouths (25), matter homogenizing stove (24) furnace chamber right part one side is provided with stock retaining wall (17), matter homogenizing stove (24) is provided with some flat-flame burners (21) and Mo electrode (26), wall behind the stove (27) is provided with device discharging opening (18), matter homogenizing stove (24) furnace chamber communication apparatus discharging opening (18).
3. the device of output metal and fire-resistant or construction material is distinguished in once heating as claimed in claim 1 or 2, it is characterized in that described rotary furnace (4) accumbency installation and be provided with the inclination angle, rotary furnace (4) outside is provided with the metal cylinder (5) of rotation, rotary furnace (4) inwall shop refractory material, suitable for reading by seal channel and baking material process, waste heat boiler, dust arrester connects, and be provided with and slip material pipe (1), rotary furnace (4) discharging opening and metal slag charge chamber furnaced (23) join by seal channel, the rotary furnace discharging opening that rotates adopts U-shaped framework, the U-shaped framework outside is seal channel one side coating fire-resistant material, establish fixing refrigerating gas trunk line (6) along cylindrical shell outside one week, trunk line upper edge cylindrical shell circumference is laid refrigerating gas nozzle (7), stretch into U-shaped groove cool metal framework, coal burning and gas burning burner (10) is installed on the discharging opening opposite simultaneously; One end of metal slag charge chamber furnaced (23) is provided with the gas outlet, the gas outlet becomes sealing ring along one week of rotating cylinder with refractory material casting, in be embedded with cooling water pipe and the cooling main tracheae, main tracheae is evenly installed gas nozzle along circumference one circle, the nozzle direction is towards the center of circle of cylindrical shell, and exposes the refractory material circle slightly; Be blown into the rotary seal circle and the fixing seal ring gap reaches sealing purpose by refrigerating gas; Metal slag charge chamber furnaced (23) is provided with charging aperture, gas outlet, furnace roof shot spray material port, firebreak, preceding headwall installation high pressure reducing gas spray gun (19), side wall installation flat-flame burner (21), metal notch (28), accident treatment mouth (29), laterally furnace bottom adopts U-shaped, vertically furnace bottom fusion zone base plane is provided with angle of declination, the Disengagement zone base plane is level, the purifying area base plane is provided with top rade, and the metal separation stove communicates by siphon passage and slag charge homogenizing furnace; Dog-house is established in matter homogenizing stove (24) furnace roof fusion zone, homogenization zone sets out gas port, the side wall fusion zone is provided with flat-flame burner (21), homogenization zone is installed Mo electrode (26) in the middle of establishing flat-flame burner (21) or slag blanket, the furnace bottom portraitlandscape all adopts at the bottom of the horizontal stove, and furnace bottom is established the bubbling mouth in fusion zone and homogenization zone interface, also establishes the bubbling mouth at the material outlet place, homogenizing furnace adopts siphon passage to link to each other with device discharging opening (18), offers opening in the described bonnet tail sealing (2).
4. the device of once heating difference output metal as claimed in claim 1 or 2 and fire-resistant or construction material is characterized in that described flat-flame burner (21) can replace with Mo electrode (26).
5. the device of once heating difference output metal as claimed in claim 1 or 2 and fire-resistant or construction material is characterized in that described rotary furnace (4) rotating part and fixed metal slag charge chamber furnaced adopt the sealing gland form to be connected.
6. the device of output metal and fire-resistant or construction material is distinguished in once heating as claimed in claim 1 or 2, it is characterized in that described rotary furnace sealing ring (3) adopts U-shaped metal framework, the U-shaped framework outside is that the seal channel inwall covers the refractory material sealing ring of being done support by reinforcement and hangnail.
7. the device of output metal and fire-resistant or construction material is distinguished in once heating as claimed in claim 1 or 2, it is characterized in that the part that described metal slag charge chamber furnaced was connected along one week of rotary furnace rotary seal circle adopts pre-buried cooling water pipe and cools off tracheae and the refractory material casting sealing ring of hangnail reinforcement, evenly lay gas nozzle along the cooling tracheae, nozzle is towards the rotating cylinder center of circle and expose refractory surface.
8. the device of once heating difference output metal as claimed in claim 1 or 2 and fire-resistant or construction material is characterized in that the seal channel of described coal burning and gas burning burner (10) and metal slag charge chamber furnaced (23) adopts the gas mode to seal.
9. the device of once heating difference output metal as claimed in claim 1 or 2 and fire-resistant or construction material is characterized in that the seal channel that described rotary furnace (4) and metal slag charge chamber furnaced (23) communicate is provided with dosing hole.
10. the device of output metal and fire-resistant or construction material is distinguished in once heating as claimed in claim 1 or 2, the purifying area furnace roof that it is characterized in that described metal slag charge chamber furnaced (23) is provided with material spraying hole, configuration sealed inert gas shotgun spray material port, furnace wall, Disengagement zone one side of described metal slag charge chamber furnaced (23) is provided with metal notch, and the Disengagement zone opposite side of described metal slag charge chamber furnaced (23) is provided with the accident flow export.
11. the device of once heating difference output metal as claimed in claim 1 or 2 and fire-resistant or construction material, it is characterized in that described flat-flame burner (21) burner center ejection oxygen rich gas, combustion gas is sprayed by the outer ring, and combustion gas and oxygen rich gas fully mix in the exit.
12. the device of once heating difference output metal as claimed in claim 1 or 2 and fire-resistant or construction material, it is characterized in that described high pressure reducing gas spray gun (19) is located on the wall of stokehold, be positioned at headwall top of the slag top, sealing ring place, the spray gun tilt angled down is consistent with the vertical angle of furnace bottom, described high pressure reducing gas spray gun inner ring leads to oxygen, the outer ring leads to reducing gases, and described reducing gases reaches strong reducing gases more than 70% for contain H2 and the CO gas that produces by natural gas or coal gas catalytic cracking.
13. the device of once heating difference output metal as claimed in claim 1 or 2 and fire-resistant or construction material, it is characterized in that described matter homogenizing stove (24) both sides are furnished with the Mo electrode, the Mo electrode inserts in the slag blanket, matter homogenizing stove (24) fusion zone and homogenization zone interface furnace bottom arrange the bubbling hole, and homogenization zone 2/3rds place's furnace bottoms arrange the bubbling hole.
14. production technology that adopts the device of once heating difference output metal as claimed in claim 1 and fire-resistant or construction material, it is characterized in that described production technology is divided into the rotary furnace pan feeding, baking, roasting, first reducing zone (C1), chamber furnaced is joined auxiliary material, fusing, reducing zone (C2), the chamber furnaced reduction, metal separation district (C3), described rotary furnace and metal slag charge chamber furnaced communicate by seal channel, reducing atmosphere and waste heat offer rotary furnace in the metal slag charge chamber furnaced, and the baked furnace charge of rotary furnace falls in the chamber furnaced, the high-speed gas of high pressure reducing gas boundling rifle ejection promotes to move to certain orientation on the stove headwall and furnace charge is placed in chamber furnaced, again by the flat flame gun heat fused of combustion gas oxygen enrichment material on the sidewall, and utilize that metal is different with slag charge proportion to be realized separating of metal and slag.
15. as described in claim 14, once heat output metal and fire-resistant or production process of building materials respectively, it is characterized in that described production technology also comprises slag charge purifying area (C4), the modified fusion zone of homogenizing furnace material (C5), matter homogenizing district (C6), described metal slag charge chamber furnaced and matter homogenizing stove communicate by siphon passage, homogenizing furnace fusion zone furnace roof is adjusted the slag charge composition by charge door, again by the flat flame gun heat fused of combustion gas oxygen enrichment material on the furnace sidewall, at the homogenization zone sidewall Mo bar electrode heating homogenizing of inserting in the material is installed, materials allocating is become required composition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310309652.9A CN103344107B (en) | 2013-05-17 | 2013-07-22 | Device and method for respectively producing metal and fire-resistant materials or construction materials through one-time heating |
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| CN201310185013.6 | 2013-05-17 | ||
| CN201310185013 | 2013-05-17 | ||
| CN201310309652.9A CN103344107B (en) | 2013-05-17 | 2013-07-22 | Device and method for respectively producing metal and fire-resistant materials or construction materials through one-time heating |
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| CN103344107B CN103344107B (en) | 2014-11-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105087841A (en) * | 2014-05-13 | 2015-11-25 | 上海扬钢冶金技术有限公司 | Spontaneous combustion reduction method iron making process |
| CN113789444A (en) * | 2018-05-16 | 2021-12-14 | 赵凤宇 | Multi-metal and microcrystalline glass mixing and melting equipment with non-ore-selection full-charging function |
| CN114264150A (en) * | 2021-12-30 | 2022-04-01 | 山西智博环化工程有限公司 | Design method of wide-screening powder phase-change composite furnace applied to solid waste treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105087841A (en) * | 2014-05-13 | 2015-11-25 | 上海扬钢冶金技术有限公司 | Spontaneous combustion reduction method iron making process |
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| CN113789444A (en) * | 2018-05-16 | 2021-12-14 | 赵凤宇 | Multi-metal and microcrystalline glass mixing and melting equipment with non-ore-selection full-charging function |
| CN114264150A (en) * | 2021-12-30 | 2022-04-01 | 山西智博环化工程有限公司 | Design method of wide-screening powder phase-change composite furnace applied to solid waste treatment |
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| CN103344107B (en) | 2014-11-26 |
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