CN103344107B - 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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- CN103344107B CN103344107B CN201310309652.9A CN201310309652A CN103344107B CN 103344107 B CN103344107 B CN 103344107B CN 201310309652 A CN201310309652 A CN 201310309652A CN 103344107 B CN103344107 B CN 103344107B
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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]
Be no matter in ores containing metal oxides in metal recovery or industrial residue metal oxide metal recovery mainly comprise that pyrogenic process reclaims and two kinds of hydrometallurgic recovery.Wherein pyrogenic process is produced method productions such as comprising blast furnace air stove, reverberatory furnace, tunnel cave, rotary hearth furnace+molten point stove, rotary kiln+mineral hot furnace.
Blast furnace blast furnace smelting is to use coke that fusing mineral aggregate or the required heat of waste residue are provided and as reducing agent.And mineral aggregate or waste residue need to carry out sintering with sintering machine before adding shaft smelting.Because the cost of coke is high, therefore cause the cost of shaft smelting high, and operating environment is poor, seriously polluted.And sintering also consumes a large amount of energy, environment is poor, 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-reduction metal to carry out crystallization, broken rear 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 again to spend large energy deposite metal and slag charge, waste energy, and heavy metal pollution water source.
Prereduction is first dried in rotary hearth furnace+molten point of stove system, then by the fusing of reduction limit, gas heating limit, last slag and metal are drawn respectively, this method has been avoided the Repeat-heating of metal, but material rotary hearth furnace be first heated to 1200 DEG C then return be as cold as 800～900 DEG C again hot charging enter to melt a point stove, material has 400 DEG C of heating back and forth, wastes energy and production capacity; Transport back and forth because material needs hermetically sealed can, when existing temperature loss, investment is large simultaneously; And molten point of stove and rotary hearth furnace cannot communicate, reducing atmosphere and the heat of molten point stove cannot be that rotary hearth furnace is used, and overall thermal efficiency is low.
Rotary kiln+mineral hot furnace is also first to dry prereduction, then hermetically sealed can transport packs mineral hot furnace energising into and is heated to 1450～1600 DEG C of smelting reductions, equally because rotary kiln and mineral hot furnace are independently arranged, material is less than 1000 DEG C in rotary kiln heating-up temperature, tinning is carried will lose 100 DEG C, then packs into after mineral hot furnace and needs with expensive electricity to its heating, so will electricity consumption heat up 550～700 DEG C in mineral hot furnace, energy unreasonable allocation, and the reducing gas of mineral hot furnace and heat can not be that rotary kiln is used.
The common disadvantage of all technique is exactly not using slag charge as the fine processing and utilizing of resource above, does not also consider making full use of of high temperature slag charge heat;
[summary of the invention]
In order to make up deficiency of the prior art and defect, 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 after metal recovery in mineral, industrial residue are also fully utilized.
To achieve these goals, design the device of a kind of once heating difference output metal and fire-resistant or construction material, comprise feeding tube 1, stove tail seal closure 2, rotary furnace sealing ring 3, rotary furnace 4, metal cylinder 5, refrigerating gas main pipeline 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 the cavity that described rotary furnace 4 discharging openings consist of seal channel 8 is connected with metal slag charge chamber furnaced 23 furnace chambers, rotary furnace 4 two ends feeding mouths and discharging opening place are respectively equipped with rotary furnace sealing ring 3, described rotary furnace sealing ring 3 is U-shaped metallic framework, rotary furnace sealing ring 3 forms U-shaped groove with the metal cylinder 5 of rotary furnace 4 outsides, in U-shaped groove, be provided with some refrigerating gas nozzles 7, some refrigerating gas nozzles 7 connect refrigerating gas main pipeline 6, refrigerating gas main pipeline 6 is arranged on rotary furnace 4 outsides, rotary furnace 4 feeding mouth places are provided with feeding tube 1, rotary furnace 4 rotary furnace sealing ring 3 outsides, feeding mouth place are provided with stove tail seal closure 2, rotary furnace 4 discharging opening place rotary furnace sealing ring 3 outsides 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 composition after stokehold wall 20 and 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 connects firebreak 11 by furnace roof 12, and after stove, wall is provided with device discharging opening.
The present invention also has as follows and optimizes 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 after Mo electrode 26 and 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 form, 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 chamber bottoms are provided with some bubbling mouths 25, matter homogenizing stove 24 furnace chamber right part one sides are provided with stock retaining wall 17, matter homogenizing stove 24 is provided with some flat-flame burners 21 and Mo electrode 26, after stove, wall 27 is provided with device discharging opening 18, matter homogenizing stove 24 furnace chamber communication apparatus discharging openings 18.
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 inwall paving refractory materials, suitable for reading by seal channel and baking material process, waste heat boiler, dust arrester connects, and be provided with feeding tube 1, rotary furnace 4 discharging openings and metal slag charge chamber furnaced 23 join by seal channel, the rotary furnace discharging opening rotating adopts U-shaped framework, U-shaped framework outside is seal channel one side coating fire-resistant material, establish fixing refrigerating gas main pipeline 6 along one week outside of cylindrical shell, on main pipeline, lay refrigerating gas nozzle 7 along cylindrical shell circumference, stretch into U-shaped groove cool metal framework, coal burning and gas burning burner 10 is installed on discharging opening opposite simultaneously, one end of metal slag charge chamber furnaced 23 is provided with gas outlet, gas outlet becomes sealing ring with refractory material casting in one week along rotating cylinder, inside be embedded with cooling water pipe and cooling main tracheae, main tracheae encloses even installing gas nozzle along circumference one, nozzle direction is towards the center of circle of cylindrical shell, and slightly exposes refractory material circle, be blown into rotary seal circle and 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, front end wall installation high-voltage 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, longitudinally furnace bottom fusion zone base plane is provided with angle of declination, Disengagement zone base plane is level, purifying area base plane is provided with top rade, and 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, side wall fusion zone is provided with flat-flame burner 21, Mo electrode 26 is installed in the middle of establishing flat-flame burner 21 or slag blanket in homogenization zone, at the bottom of furnace bottom portraitlandscape all adopts horizontal stove, furnace bottom is established bubbling mouth in fusion zone and interface, homogenization zone, also establishes bubbling mouth at material outlet place, homogenizing furnace adopts siphon passage to be connected with device discharging opening 18, in described bonnet tail sealing 2, offers opening.
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 sealing gland form to be connected.
Described rotary furnace sealing ring 3 adopts U-shaped metal framework, and U-shaped framework outside is that the covering of seal channel inwall makes by reinforcement and hangnail the refractory material sealing ring supporting.
The refractory material casting sealing ring that the part that described metal slag charge chamber furnaced is connected along rotary furnace rotary seal circle for a week adopts pre-buried cooling water pipe and cooling tracheae and hangnail to strengthen, evenly lay gas nozzle along 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 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 accident flow export.
Described flat-flame burner 21 burner center ejection oxygen rich gas, combustion gas is sprayed by outer ring, and combustion gas and oxygen rich gas fully mix in 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, spray gun tilt angled down is consistent with furnace bottom regulation of longitudinal angle, the logical oxygen of described high pressure reducing gas spray gun inner ring, outer ring leads to reducing gases, and described reducing gases is the H that contains producing by natural gas or coal gas catalytic cracking
2reach more than 70% strong reducing gases with CO gas.
Described matter homogenizing stove 24 both sides are furnished with Mo electrode, and Mo electrode inserts in slag blanket, and matter homogenizing stove 24 fusion zones and interface, homogenization zone furnace bottom arrange bubble holes, and homogenization zone 2/3rds place's furnace bottoms arrange bubble holes.
The present invention also comprises a kind of production technology of the device that adopts above-mentioned once heating difference output metal and fire-resistant or construction material, described production technology is divided into rotary furnace pan feeding, baking, roasting, just reducing zone C1), chamber furnaced is joined auxiliary material, fusing, reducing zone (C2), chamber furnaced reduction, metal separation district (C3), described rotary furnace and metal slag charge chamber furnaced communicate by seal channel, in metal slag charge chamber furnaced, reducing atmosphere and waste heat offer rotary furnace, and the baked furnace charge of rotary furnace falls in chamber furnaced, and furnace charge is placed in the high-speed gas of the ejection of high pressure reducing gas boundling rifle on stove headwall and promotes to move to certain orientation in chamber furnaced, again by the flat flame gun heat fused of combustion gas oxygen enrichment material on sidewall, and utilize metal to realize separating of metal and slag with slag charge proportion difference.
This technique 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 slag charge composition by charge door, by the flat flame gun heat fused of combustion gas oxygen enrichment material in furnace sidewall, the Mo bar electrode heating homogenizing of inserting in material is installed on the sidewall of homogenization zone again, materials allocating is become to 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 after metal recovery in mineral, industrial residue are also fully utilized, when utilizing this device fully to reclaim the useless metal in the dreg of ores containing metal oxides or technical oxide, also residue slag charge is transformed into useful product, thereby cost energy consumption is very low, seal operation environment is good, pollutes less, and technique is simple.
According to a kind of ores containing metal oxides of the embodiment of the present invention or Industry Waste metal in the dreg, (pyrogenic process such as Cr, Ni, Fe, Cu reclaims 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.
Metal slag charge chamber furnaced furnace roof is established firebreak and shot spray material port, and firebreak is used for keeping in burner hearth temperature even, steady air current, and shot spray gun is for further purifying isolated slag charge; Chamber furnaced furnace bottom laterally adopts U-shaped furnace bottom, and longitudinally fusion zone adopts declivity furnace bottom, and at the bottom of Disengagement zone adopts horizontal stove, purifying area adopts updip furnace bottom.Stove headwall is established high pressure reduction boundling spray gun, and spray gun is in setting that the top of the slag is slightly gone up and with the same angle declivity of furnace bottom; Side wall is installed flat flame oxygen enriched gas gun; Be provided with metal liquid stream outlet in Disengagement zone one side, opposite side is provided with accident treatment mouth.
Metal slag charge chamber furnaced and slag charge homogenizing furnace are connected by siphon passage.
Slag charge homogenizing furnace divides reinforced fusion zone and slag charge homogenization zone, and fusion zone furnace roof is established sealing charge door, and homogenization zone furnace roof sets out gas port; At the bottom of furnace bottom adopts horizontal stove, furnace bottom height is wanted a little higher than setting metal bath surface; Fusion zone side wall is installed oxygen enrichment flat-flame burner; Fusion zone and interface, homogenization zone and rear end, homogenization zone furnace bottom are established bubble holes; Liquid level middle part, homogenization zone side wall is established Mo electrode, heating homogenizing material.
Flat-flame burner designing requirement outer ring delivery of fuel gas, endoporus is carried oxygen enrichment, fully mixes in exit.
By siphon passage and next procedure, (float glass line, water-cooled pair roller line, foaming line, wire drawing line etc. join homogenizing furnace.
[brief description of the drawings]
Fig. 1 is function division figure of the present invention
Fig. 2 is structural representation of the present invention
Fig. 3 is the top view of Fig. 2
Fig. 4 is 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 feeding tube in figure, 2 stove tail seal closures, 3 rotary furnace sealing rings, 4 rotary furnaces, 5 metal cylinders, 6 refrigerating gas main pipelines, 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, 26Mo electrode, wall after 27 stoves, 28 metal notches, 29 accident treatment mouths, 30 chamber furnaced sealing rings, 31 reinforcements, 32 hangnails, 33 cold gas main pipelines, 34 gas nozzles, 35 water cooling tubes.
[detailed description of the invention]
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents identical or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only 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 relationship of the instruction such as D score " top " " end ", be only the present invention for convenience of description instead of require the present invention with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
Reclaim according to the pyrogenic process such as Metal Cr, Ni, Fe, Cu in a kind of ores containing metal oxides of the present invention or 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 as shown in Figure 1, 2, 3 rotary furnace 4, sealing gland sealing ring 3, metal slag charge chamber furnaced 23, slag charge homogenizing furnace 24 according to apparatus of the present invention, be divided into 5 functional areas, drying materials roasting is reducing zone rotary furnace C1, smelting reduction district chamber furnaced C2, Reduced separating district chamber furnaced C3, slag charge purifying area chamber furnaced C4, batching fusion zone homogenizing furnace C5, matter homogenizing district homogenizing furnace C6 just.
Be rotary furnace as shown in Figure 1,2,3, 4 according to apparatus of the present invention, the rotary furnace of doing is the metallic cylinder that accumbency is at a certain angle placed and rotated with certain speed, and 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 is basic refractory material sealing ring as Fig. 1,2,5 is depicted as U-shaped metallic framework, sealing ring is provided with static refrigerating gas supervisor 6 for one week, main pipeline is along even circumferential installing gas nozzle 7, nozzle inserts U-shaped groove, forces cooling by gases at high pressure to rotary seal circle groove metal cylinder.
As 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, rotary furnace feed opening is chamber furnaced feeding mouth, and chamber furnaced feeding mouth is chamber furnaced gas outlet, realize the convection current of material and heat, and it is reinforced to have realized continuous uniform, pipelining, and heat and reducing atmosphere in chamber furnaced made full use of by rotary furnace.
As shown in Figure 5, the static sealing ring that metal slag charge chamber furnaced and rotary furnace sealing ring are corresponding adopts castable refractory cast equally, wherein pre-buried air cooling main pipeline 33, nozzle 34 and water cooled pipeline 35, within one week, evenly lay gas nozzle 34 at main cooling tracheae 33 along rotating cylinder, also slightly expose fire proofed wood charge level facing to the cylindrical shell center of circle, when ventilation is carried out air seal to being connected gap, the sealing ring of cooling periphery.
As 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 chamber furnaced burner hearth of firebreak can not siphoned away by rotary furnace very soon, has stablized fire box temperature, the also fine reducing atmosphere that protects burner hearth of while; The shotgun spout 13 that is positioned at slag charge purifying area can evenly be squeezed into slag charge by force by slag charge cleanser, makes slag charge reach good clean-up effect.
As shown in Figure 6,7, metal slag charge chamber furnaced furnace bottom adopts U-shaped furnace bottom, prevents that refractory brick from floating in metal liquid high specific gravity situation.The longitudinal C2 of furnace bottom fusion zone adopts slanting furnace bottom, is convenient to material and vertically moves; At the bottom of C3 Disengagement zone adopts horizontal stove, be convenient to metal slag charge and separate; Longitudinally C4 purifying area adopts upper oblique furnace bottom, and object 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 necessary whole chamber furnaced liquid level of ensuring coverage of the metal bath surface height of setting after a certain amount of metal bath surface in regularity simultaneously, so just can ensure that newly entering stove material floats on metal bath surface, is convenient to the tiling of material.
As shown in Figure 1, at front end wall 20 place's installation high-voltage reducing gas spray guns 19, spray gun height is with a little higher than setting top of the slag for well, and spray gun is consistent with furnace bottom tilt angled down downwards; Spray gun, in just having entered the fusing of stove heating material, promotes material and flows to Disengagement zone; At chamber furnaced and all horizontally disposed flat-flame burners 21 of homogenizing furnace fusion zone side wall, for melting, 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 reducing atmosphere stove, and slag charge homogenizing furnace belongs to atmosphere furnace, communicates can accomplish independent operation separately by siphon passage, 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.
As shown in Fig. 2,8, homogenizing furnace fusion zone furnace roof is provided with sealing dog-house 15, for needed corresponding product scarce slag charge material is dropped in stove, slag charge composition is adjusted; Homogenization zone furnace roof is provided with gas outlet 16, the gas in stove is introduced to roasting procedure by seal channel the required material in fusion zone is toasted and heated up.
As shown in Fig. 2,3,8, by 1/3rd places at the bottom of pond, Mo electrodes are installed at homogenization zone pool depth, for to solution temperature control and homogenizing.
As shown in Fig. 2,3,8, at the bottom of homogenizing furnace furnace bottom adopts open hearth, be convenient to movement and the homogenizing of solution; Furnace bottom is established bubbling mouth in fusion zone and homogenization zone, and solution pool is formed to gas wall, stops the too fast homogenization zone that enters of fusion zone material; Establish bubbling mouth in homogenization zone by rear 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 homogenizing also.
As shown in Fig. 1,2,3,8, after homogenizing furnace, configure the production line such as float glass or marble, 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, amendment, replacement, distortion to these embodiment in the case of not departing from this practical principle and aim, scope claim of the present invention and equivalent thereof limit.
Embodiment 1:
Certain ore deposit is containing Fe
2o
370%, TiO
215%, SiO
222%, first batching, by going back 8～20 parts, raw coal, 70～90 parts, ore deposit, 5～10 parts of cosolvents, after pelletizing is dry, pack material into rotary furnace by elephant trunk 1, by revolution in 4～7 hours, material is heated to 1100～1380 DEG C, through overbaking, roasting, the physical-chemical reactions such as reduction, the percent reduction of metallic iron reaches more than 90%, then semi-molten material falls into slag charge metal separation stove 23, the boundling reduction rifle 19 of installing by headwall 20 places again sprays into reaching 70% strong reducing gas containing H2 and CO gas and forcing reduction of producing by natural gas catalytic cracking, make percent reduction further bring up to 95～99%, and the material that promotes to float on metal liquid by gases at high pressure travels forward, thereby be further heated, temperature of charge reaches 1450～1600 DEG C and melt, thereby realize separating of slag and metal, metal molten iron flows into by flow export 28 that ladle carries out cast iron or heat is sent smelting.
If needed, the shotgun spout 13 that can arrange on top, C4 region, region sprays into strong reductant, and the metal Fe content in slag charge is further reduced.
Residue slag charge is got rid of chamber furnaced 23 by the siphon passage that is arranged on region C3 or C4, carries out shrend and forms industrial residue.
Due to TiO in residue waste residue
2content is raised to 45%, has in fact become extraordinary titanium white fine ore, and because the Fe content in slag is trace, the production technology that the ilmenite using than present titanium dioxide will more suitable existing titanium dioxide.
The flame for oxygen enrichment reducing atmosphere that the flat-flame burner of installing due to chamber furnaced 23 side walls sprays, the rifle 19 of boundling reduction simultaneously sprays into the gas into strongly reducing atmosphere, therefore in whole chamber furnaced, be full of the gas of reducing atmosphere, these gases enter rotary furnace by the passage communicating with rotary furnace, again by fire coal or gas gun 10, spray into the gas of oxidizing atmosphere, the material that reducing gas that chamber furnaced overflows is fully burned in heating rotary stove.
Embodiment 2
Certain lateritic nickel ore, containing Ni1.8%, contains Fe20%, MgO12%, SiO
220%, H
2o34%, 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, raw coal, dry 70～90 parts, ore deposit, 5～12 parts of abundant mixed pelletizings of cosolvent, pack material into rotary furnace by elephant trunk 1 again, by revolution in 4～7 hours, material is heated to 1100～1380 DEG C, through overbaking, roasting, the physical-chemical reactions such as reduction, the percent reduction of metallic iron reaches more than 90%, then semi-molten material falls into slag charge metal separation stove 23, the boundling reduction rifle 19 of installing by headwall 20 places again sprays into reaching 70% strong reducing gas containing H2 and CO gas and forcing reduction of producing by natural gas catalytic cracking, make percent reduction further bring up to 95～99%, and the material that promotes to float on metal liquid by gases at high pressure travels forward, thereby be further heated, temperature of charge reaches 1450～1600 DEG C and melt, thereby realize separating of slag and metal, metallic nickel molten iron flows into by flow export 28 that ladle carries out cast iron or heat is sent smelting.
The slag that metal has been separated still contains 1～3% Fe, directly affects the use of slag, and the shotgun arranging by C4 district furnace roof, squeezes into strong reductant, makes the Fe content in slag charge be less than 1%; Then slag charge enters matter homogenizing stove 24 by siphon passage.
Allocate 5～15 parts of spodumenes into by C5 district furnace roof ingredients mouth, 2～10 parts of cosolvents, spray into oxidizing atmosphere flame heating and melting material by oxygen enrichment flat-flame burner; Then by first bubbling mouth, make material be melted fully, heat, stir, 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 in the needed steady temperature of later process by Mo electrode 26, under the adjustment of Bing Hou road bubbling mouth, make the temperature of material further even, enter roller briquetting machine by siphon passage again and be pressed into microcrystal glass plate, use as Building Decoration Material.
The flame for oxygen enrichment reducing atmosphere that the flat-flame burner of installing due to chamber furnaced 23 side walls sprays, the rifle 19 of boundling reduction simultaneously sprays into the gas into strongly reducing atmosphere, therefore in whole chamber furnaced, be full of the gas of reducing atmosphere, these gases enter rotary furnace by the passage communicating with rotary furnace, again by fire coal or gas gun 10, spray into the gas of oxidizing atmosphere, the material that reducing gas that chamber furnaced overflows is fully burned in heating rotary stove.
The hot gas of matter homogenizing stove is introduced dryer by the gas outlet of C6 furnace roof by waste heat dries the material adding by C5 district furnace roof and preheating.
Claims (14)
1. the device of an once heating difference output metal and fire-resistant or construction material, comprise feeding tube (1), stove tail seal closure (2), rotary furnace sealing ring (3), rotary furnace (4), metal cylinder (5), refrigerating gas main pipeline (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 the cavity that described rotary furnace (4) discharging opening consists of seal channel (8) is connected with metal slag charge chamber furnaced (23) furnace chamber, rotary furnace (4) two ends feeding mouth and discharging opening place are respectively equipped with rotary furnace sealing ring (3), described rotary furnace sealing ring (3) is U-shaped metallic framework, rotary furnace sealing ring (3) forms U-shaped groove with the metal cylinder (5) of rotary furnace (4) outside, in U-shaped groove, be provided with some refrigerating gas nozzles (7), some refrigerating gas nozzles (7) connect refrigerating gas main pipeline (6), refrigerating gas main pipeline (6) is arranged on rotary furnace (4) outside, rotary furnace (4) feeding mouth place is provided with feeding tube (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 composition after stokehold wall (20) and 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 connects firebreak (11) by furnace roof (12), after stove, wall is provided with device discharging opening,
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) after Mo electrode (26) and 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) composition, 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 after stove (27) is provided with device discharging opening (18), matter homogenizing stove (24) furnace chamber communication apparatus discharging opening (18).
2. the device of once heating difference output metal as claimed in claim 1 and fire-resistant or construction material, inclination angle is installed and is provided with in rotary furnace (4) accumbency described in it is characterized in that, rotary furnace (4) outside is provided with the metal cylinder (5) of rotation, rotary furnace (4) inwall paving refractory material, suitable for reading by seal channel and baking material process, waste heat boiler, dust arrester connects, and be provided with feeding tube (1), rotary furnace (4) discharging opening and metal slag charge chamber furnaced (23) join by seal channel, the rotary furnace discharging opening rotating adopts U-shaped framework, U-shaped framework outside is seal channel one side coating fire-resistant material, establish fixing refrigerating gas main pipeline (6) along one week outside of cylindrical shell, on main pipeline, lay refrigerating gas nozzle (7) along cylindrical shell circumference, stretch into U-shaped groove cool metal framework, coal burning and gas burning burner (10) is installed on discharging opening opposite simultaneously, one end of metal slag charge chamber furnaced (23) is provided with gas outlet, gas outlet becomes sealing ring with refractory material casting in one week along rotating cylinder, inside be embedded with cooling water pipe and cooling main tracheae, main tracheae encloses even installing gas nozzle along circumference one, nozzle direction is towards the center of circle of cylindrical shell, and slightly exposes refractory material circle, be blown into rotary seal circle and 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, front end wall installation high-voltage 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, longitudinally furnace bottom fusion zone base plane is provided with angle of declination, Disengagement zone base plane is level, purifying area base plane is provided with top rade, and 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, side wall fusion zone is provided with flat-flame burner (21), Mo electrode (26) is installed in the middle of establishing flat-flame burner (21) or slag blanket in homogenization zone, at the bottom of furnace bottom portraitlandscape all adopts horizontal stove, furnace bottom is established bubbling mouth in fusion zone and interface, homogenization zone, also establish bubbling mouth at material outlet place, homogenizing furnace adopts siphon passage to be connected with device discharging opening (18), on described stove tail seal closure (2), offers opening.
3. the device of once heating difference output metal as claimed in claim 1 and fire-resistant or construction material, is characterized in that described flat-flame burner (21) can replace with Mo electrode (26).
4. the device of once heating difference output metal as claimed in claim 1 and fire-resistant or construction material, is characterized in that described rotary furnace (4) rotating part and fixed metal slag charge chamber furnaced adopt sealing gland form to be connected.
5. 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 rotary furnace sealing ring (3) adopts U-shaped metal framework, U-shaped framework outside is that the covering of seal channel inwall makes by reinforcement and hangnail the refractory material sealing ring supporting.
6. the device of once heating difference output metal as claimed in claim 1 and fire-resistant or construction material, it is characterized in that the refractory material casting sealing ring that described metal slag charge chamber furnaced adopts pre-buried cooling water pipe and cooling tracheae and hangnail to strengthen along the part of rotary furnace rotary seal circle linking in a week, evenly lay gas nozzle along cooling tracheae, nozzle is towards the rotating cylinder center of circle and expose refractory surface.
7. the device of once heating difference output metal as claimed in claim 1 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 gas mode to seal.
8. the device of once heating difference output metal as claimed in claim 1 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.
9. the device of once heating difference output metal as claimed in claim 1 and fire-resistant or construction material, 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 accident flow export.
10. 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 flat-flame burner (21) burner center ejection oxygen rich gas, combustion gas is sprayed by outer ring, and combustion gas and oxygen rich gas fully mix in exit.
The device of 11. once heating difference output metals as claimed in claim 1 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, spray gun tilt angled down is consistent with furnace bottom regulation of longitudinal angle, the logical oxygen of described high pressure reducing gas spray gun inner ring, outer ring leads to reducing gases, described reducing gases be produce by natural gas or coal gas catalytic cracking reach more than 70% strong reducing gases containing H2 and CO gas.
The device of 12. once heating difference output metals as claimed in claim 1 and fire-resistant or construction material, it is characterized in that described matter homogenizing stove (24) both sides are furnished with Mo electrode, Mo electrode inserts in slag blanket, matter homogenizing stove (24) fusion zone and interface, homogenization zone furnace bottom arrange bubble holes, and homogenization zone 2/3rds place's furnace bottoms arrange bubble holes.
13. 1 kinds adopt the production technology of 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 rotary furnace pan feeding, baking, roasting, just reducing zone (C1), chamber furnaced is joined auxiliary material, fusing, reducing zone (C2), chamber furnaced reduction, metal separation district (C3), described rotary furnace and metal slag charge chamber furnaced communicate by seal channel, in metal slag charge chamber furnaced, reducing atmosphere and waste heat offer rotary furnace, and the baked furnace charge of rotary furnace falls in chamber furnaced, and furnace charge is placed in the high-speed gas of the ejection of high pressure reducing gas boundling rifle on stove headwall and promotes to move to certain orientation in chamber furnaced, again by the flat flame gun heat fused of combustion gas oxygen enrichment material on sidewall, and utilize metal to realize separating of metal and slag with slag charge proportion difference.
14. once heat the production technology of difference output metal and fire-resistant or construction material as claimed in claim 13, 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 slag charge composition by charge door, again by the flat flame gun heat fused of combustion gas oxygen enrichment material in furnace sidewall, the Mo bar electrode heating homogenizing of inserting in material is installed on the sidewall of homogenization zone, materials allocating is become to required composition.
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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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| CN105087841B (en) * | 2014-05-13 | 2017-06-13 | 上海扬钢冶金技术有限公司 | Spontaneous combustion reducing process iron-smelting 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 |
| CN114264150B (en) * | 2021-12-30 | 2022-11-22 | 山西智博环化工程有限公司 | Wide screening powder phase transition composite furnace for solid waste treatment |
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| CN101839631A (en) * | 2009-07-21 | 2010-09-22 | 中国恩菲工程技术有限公司 | Electrothermal copper-smelting slag depleted furnace |
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| CN203489652U (en) * | 2013-05-17 | 2014-03-19 | 周海彬 | Device for producing metal and fireproof or building materials by one-time heating |
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| JP3866492B2 (en) * | 2000-06-29 | 2007-01-10 | 株式会社神戸製鋼所 | Operation method of rotary hearth reduction furnace |
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| JPS61132551A (en) * | 1984-11-29 | 1986-06-20 | エフ・エル・スミス・アンド・カンパニ−・エ−・エス | Manufacture and facilities for manufacturing white cement clinker |
| CN101839631A (en) * | 2009-07-21 | 2010-09-22 | 中国恩菲工程技术有限公司 | Electrothermal copper-smelting slag depleted furnace |
| CN202470757U (en) * | 2012-01-21 | 2012-10-03 | 胡长春 | Continuous temperature controlled smelting system with rotary kiln and melting furnace |
| CN102978377A (en) * | 2012-11-29 | 2013-03-20 | 长沙矿冶研究院有限责任公司 | Powder material rotary kiln reducing roasting device and process using device |
| CN203489652U (en) * | 2013-05-17 | 2014-03-19 | 周海彬 | Device for producing metal and fireproof or building materials by one-time heating |
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