CN205228149U - Vanadium nitrogen alloy sintering furnace - Google Patents
Vanadium nitrogen alloy sintering furnace Download PDFInfo
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- CN205228149U CN205228149U CN201520747846.1U CN201520747846U CN205228149U CN 205228149 U CN205228149 U CN 205228149U CN 201520747846 U CN201520747846 U CN 201520747846U CN 205228149 U CN205228149 U CN 205228149U
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- 238000005245 sintering Methods 0.000 title claims abstract description 30
- 229910001199 N alloy Inorganic materials 0.000 title claims abstract description 22
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 96
- 239000011449 brick Substances 0.000 claims abstract description 79
- 238000005260 corrosion Methods 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- 238000003763 carbonization Methods 0.000 claims abstract description 28
- 239000000835 fiber Substances 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims description 27
- 239000011819 refractory material Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 24
- 238000011068 load Methods 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 18
- 238000005121 nitriding Methods 0.000 claims description 15
- 239000011148 porous material Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 238000005915 ammonolysis reaction Methods 0.000 claims description 13
- 229910002804 graphite Inorganic materials 0.000 claims description 13
- 239000010439 graphite Substances 0.000 claims description 13
- 239000010431 corundum Substances 0.000 claims description 11
- 229910052593 corundum Inorganic materials 0.000 claims description 11
- 239000004927 clay Substances 0.000 claims description 8
- 229910052570 clay Inorganic materials 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- ZLNQQNXFFQJAID-UHFFFAOYSA-L Magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 7
- 239000011776 magnesium carbonate Substances 0.000 claims description 7
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 108010034748 copper-binding protein Proteins 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 description 20
- 239000000956 alloy Substances 0.000 description 20
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 20
- 239000007789 gas Substances 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 210000001503 Joints Anatomy 0.000 description 4
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000003628 erosive Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 231100000078 corrosive Toxicity 0.000 description 3
- 231100001010 corrosive Toxicity 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GORXZVFEOLUTMI-UHFFFAOYSA-N methane;vanadium Chemical compound C.[V] GORXZVFEOLUTMI-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Inorganic materials [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 230000001141 propulsive Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 208000002925 Dental Caries Diseases 0.000 description 1
- 229910000742 Microalloyed steel Inorganic materials 0.000 description 1
- 210000004940 Nucleus Anatomy 0.000 description 1
- NOTVAPJNGZMVSD-UHFFFAOYSA-N Potassium oxide Chemical compound [K]O[K] NOTVAPJNGZMVSD-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001808 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000593 degrading Effects 0.000 description 1
- 230000001066 destructive Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000003014 reinforcing Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GRUMUEUJTSXQOI-UHFFFAOYSA-N vanadium dioxide Chemical compound O=[V]=O GRUMUEUJTSXQOI-UHFFFAOYSA-N 0.000 description 1
- -1 vanadium iron Chemical compound 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium(0) Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses a vanadium nitrogen alloy sintering furnace, including dry dewatering period, prereduction section, four functional section of reduction carbonization section and high temperature nitrogenize section, each functional section constitutes by casing, heat preservation chamber, high temperature resistant chamber and the reaction cavity of againsting corrosion in by the extroversion, the heat preservation chamber is fibre heated board, insulating brick and resistant firebrick in by the extroversion in proper order, the high temperature resistant chamber of againsting corrosion includes the heating chamber and thermal -insulated district the that keep warm down, the high temperature resistant chamber of againsting corrosion of dry dewatering period, prereduction section and high temperature nitrogenize section still includes the heating chamber, the reaction cavity is diplopore access structure, dry dewatering period, prereduction section and reduction carbonization duan jun are equipped with drainage exhaust hole, the utility model discloses a kiln corrosion resistance is good, long service life, and the product quality is high, easy maintenance.
Description
Technical field
The utility model relates to kiln technical field, particularly a kind of vanadium-nitrogen alloy sintering kiln.
Background technology
VN alloy is as a kind of Novel steel iron additive, and alternative vanadium iron is used for the production of micro alloyed steel.It makes an addition in structural steel, tool steel, pipe line steel, reinforcing bar, common engineering steel and cast iron, the comprehensive mechanical performances such as the wearability of steel, rotproofness, intensity, toughness, hardness, ductility and thermal fatigue resistance can be significantly improved, and make steel have good solderability.Significant advantages such as having the security performance of raising building and goods in actual applications, reduce rolled steel dosage, be cost-saving, therefore VN alloy is generally used by domestic and international steel mill.
Patent ZL200410083901.8 discloses " producing the chamber structure of the calciner pushed bat kiln of VN alloy continuously ", and this pushed bat kiln is longitudinally disposed with low-temperature zone, changeover portion, high temperature section and cooling section.Low-temperature zone has 5 warm areas, and changeover portion has 4 warm areas, and high temperature section establishes 7 warm areas, and cooling section is divided into nature cooling zone and forces cooling zone; The side wall brick relevant position of each warm area there is heating element heater jack, heating element heater and kiln chamber are isolated.
Heating element heater in this utility model is arranged vertically on burner hearth both sides, belongs to left and right mode of heating, and owing to not having by hot gas the rule moved upward, gas strengthens the impingment corrosion to kiln body, shortens the life-span of whole kiln.Particularly in the kiln later stage in age, heating chamber major part refractory material is burnt, and alters, improve kiln body environment temperature, be degrading operating condition outside the corrosive gas that is heated.
Patent CN102435066A discloses " a kind of high temperature sintering kiln " for producing VN alloy, this kiln comprises body of heater, the intensification section be communicated with the charging aperture of body of heater, the high temperature section be communicated with intensification section, is communicated with high temperature section and the temperature descending section be communicated with the discharging opening of body of heater.Be arranged on body of heater, and to multiple microwave heating equipments of launched microwave in body of heater.While through body of heater, and there is the closed polygon track of the push pedal holding VN alloy blank; Material provides the energy to carry out spontaneous heating under heating condition at microwave, then carries out reduction nitridation reaction and generates VN alloy.
Heating source main body in this utility model is microwave, is run and produce heat by this friction in microwave field of heated material.Therefore first this kiln requires material-to-be-heatedly itself have extraordinary microwave absorbing property, requires that kiln body has good microwave penetration performance simultaneously, very high to the requirement of material.Particularly by the material that heats, the waste and old solids adhering that generates afterwards of anti-biochemical reaction is at kiln inner chamber under the high temperature conditions, and increase after the corrosion of kiln body, the microwave penetration performance of kiln and heat-insulating property reduce greatly, shorten the service life of kiln.
Patent CN102853670A discloses " a kind of energy saving and environment friendly kiln body and the VN alloy high temperature sintering furnace be applied to thereof " for producing VN alloy, this kiln comprises thermal insulation fire-resistant layer, calcining compartment, graphite crucible, horizontal heating clamber and seal box, graphite crucible and thermal insulation fire-resistant layer is respectively arranged with inside and outside calcining compartment, the both up and down of graphite crucible is respectively arranged with on upper and lower horizontal heating clamber, extend to after furnace shell in the gap in seal box between calandria and plug brick and be filled with high temperature fiber, seal box is provided with intake interface and copper electrode.
What adopt in this utility model is single channel kiln, and the intracavity space of kiln is narrow, and make yielding poorly of product, energy consumption is high.This kiln only have employed simply unified inner-cavity structure simultaneously, because VN alloy reacts there is different sending out under different temperature conditions, particularly acutely overflow the stage at corrosive gas, the structure of this kind of kiln can not resist washing away and corrosion of alkaline gas.Cause kiln inner chamber crossbeam rupture and drop, whole kiln collapses, and has a strong impact on furnace service life.
Patent CN103925786A discloses " a kind of two push pedal high temperature sintering kilns for the production of VN alloy " for producing VN alloy, this kiln a kind of two push pedal high temperature sintering kilns for the production of VN alloy of the present utility model, comprise main kiln, secondary kiln, kiln hood propulsive mechanism, kiln tail propulsive mechanism, electric heating system, gas handling system, gas extraction system and control system, described main kiln is vertically arranged with once reduction and draining section, secondary reduction nitrogenize and row's K+/Na+ section, high temperature burns till fine and close section, cooling fixed nitrogen section and cooling section.
Have employed different temperature section designs in this utility model, but whole kiln cavity configuration is single equally, the structure of this kind of kiln can not resist washing away and corrosion of alkaline gas.Cause kiln inner chamber crossbeam rupture and drop, whole kiln collapses, and has a strong impact on furnace service life.
In sum, how to provide a kind of high temperature sintering kiln, so that realize can be efficient, producing VN alloy enduringly, is current those skilled in the art's problem demanding prompt solution.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of vanadium-nitrogen alloy sintering kiln, to reach the object extending kiln service life, improve product quality, reduce product cost.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of vanadium-nitrogen alloy sintering kiln, comprises drying and dehydrating section, prereduction section, reduction and carbonization section and high-temperature ammonolysis section four functional sections, and described each functional section is from outside to inside by housing, incubation cavity, high temperature resistant chamber against corrosion and reaction cavity composition; Described incubation cavity is followed successively by fiber insulation board, insulating brick and refractory brick from outside to inside, described high temperature resistant chamber against corrosion comprises lower heating clamber and thermal insulation separation hot-zone, the chamber high temperature resistant against corrosion of described drying and dehydrating section, prereduction section and high-temperature ammonolysis section also comprises heating clamber, and described reaction cavity is diplopore channel design; Described drying and dehydrating section, prereduction section and reduction and carbonization section are equipped with drainage pore.
In such scheme, the chamber high temperature resistant against corrosion of each functional section and the material of reaction cavity are respectively: described drying and dehydrating section is that high-alumina clay brick refractory material is formed, described prereduction section is that corundum brick refractory material is formed, described reduction and carbonization section is that electrically fused magnesite brick refractory material is formed, and described high temperature nitriding section is that high-strength graphite refractory material is formed.
In further technical scheme, described housing two ends are side wall, and top is top cover, housing right-side wall is distributed with heating clamber window, and described heating clamber window upper end is provided with tracheae, and lower end is provided with copper binding post.
In further technical scheme, described lower heating clamber is positioned at high temperature resistant chamber against corrosion bottom, the sidewall of described lower heating clamber is made up of bridge pier brick and lower window brick, the top, room of lower heating clamber is made up of the square bridge plate be positioned at above lower window brick and trapezoidal bridge plate, and described lower heating chamber is provided with electrical heating elements.
In further technical scheme, described upper heating clamber is positioned at the top in high temperature resistant chamber against corrosion, the sidewall of described upper heating clamber is made up of crossbeam and upper window brick, the top, room of upper heating clamber is made up of jointly the caping be positioned at above crossbeam and the square bridge plate be positioned at above upper window brick and trapezoidal bridge plate, described crossbeam lower end is provided with crossbeam hangers, be be placed in the load bearing board on crossbeam hangers at the bottom of the room of upper heating clamber, described load bearing board places electrical heating elements.
In further technical scheme, described insulation district is positioned between heating clamber and lower heating clamber, is made up of refractory brick and insulating brick.
Further in technical scheme, above described bridge pier brick, be provided with bar shaped track, separated by spacer bar between adjacent bar shaped track and fix; Described bar shaped track both sides are provided with guiding brick, for the mobile route of crucible in specification reaction cavity.
Further in technical scheme, in the heating clamber spacing of described drainage pore between upper heating clamber and upper heating clamber, described drainage pore is through described reaction cavity, high temperature resistant chamber against corrosion, incubation cavity and housing.
Further in technical scheme, the both sides of described reaction cavity are load-bearing side walls, and for supporting the crossbeam being positioned at load-bearing side wall upper end, described crossbeam is across whole reaction cavity cross section.
Described drying and dehydrating section, the temperature range of this functional section is set as 100-300 DEG C, and due to the moisture content containing 1-10% in VN alloy blank, therefore after heating, moisture content volatilizees excessive next from blank, and to the cavity inner wall of kiln, cavity crossbeam produces and corrodes.For this feature, the utility model mainly takes high-alumina clay brick refractory material in drying and dehydrating section, and the employing of cavity crossbeam is spliced suits structure, ensures expansion space and the load bearing stength of cavity crossbeam.Simultaneously due to the character of high-alumina clay brick refractory material itself, the erosion of steam can be resisted under this functional section design temperature condition.This functional section is designed with drainage pore in addition, and the aqueous vapor that can make volatilizees from blank overflows is discharged as soon as possible in reaction cavity.
Described prereduction section, the temperature range of this functional section is set as 300-600 DEG C, and the VN alloy blank sloughing moisture content is that prereduction reaction occurs this functional section master, and part ammonium residual in blank can overflow with the form of ammonia.For this feature, the utility model mainly takes corundum brick refractory material in prereduction section, and cavity crossbeam adopts suspension type combining structure.These functional areas are also designed with drainage pore.
Described reduction and carbonization section, the temperature range of this functional section is set as 600-1200 DEG C, through prereduction VN alloy blank this functional section master be occur reduction and carbonization reaction, the oxygen in vanadium oxide cements out by the carbon in blank, generate vanadium carbide.Due in material oxidation vanadium containing have an appointment 1% potassium oxide and sodium oxide molybdena, under this temperature conditions, mode by steam is sent out biofacies migration by alkali metal, and move to discharge directions together along with gas stream in the stove, run into water or carbon dioxide then generates low melting point, high boiling highly basic, such as: KOH, NaOH, K
2cO
3, Na
2cO
3deng and be attached on furnace chamber material, and constantly furnace chamber material to be corroded, has a strong impact on main sintering furnace service life.For this feature, the utility model mainly takes electrically fused magnesite brick refractory material in reduction section carbonization section, and cavity top end adopts semicircle vaulted type combining structure.These functional areas are also designed with drainage pore, and add that semicircle vaulted type combining structure is while raising housing depth, the alkali metal corrosive gas flowing that favourable reaction produces, discharges cavity as soon as possible simultaneously.
Described high temperature nitriding section, the temperature range of this functional section is set as 1200-1500 DEG C, and nitriding displacement reaction occurs the material having generated vanadium carbide under nitrogen atmosphere, generates final vanadium-nitrogen alloy product.Because the temperature of these functional areas is higher, therefore the utility model mainly takes high-strength graphite refractory material in high temperature nitriding section, and cavity crossbeam adopts monoblock high-strength graphite brick structure.These functional areas mainly high temperature nitriding reaction in addition, the exhausted air quantity becoming to generate is few, does not therefore design draining steam vent.
By technique scheme, compared with prior art, beneficial effect is the vanadium-nitrogen alloy sintering kiln that the utility model provides:
1) vanadium-nitrogen alloy sintering kiln divides in order to four functional areas by the utility model, i.e. drying and dehydrating section, prereduction section, reduction and carbonization section and high-temperature ammonolysis section.Gas componant in the chemical reaction that each functional section occurs according to material and kiln devises different kiln cavity configurations, have employed different refractory material layings simultaneously and forms.Enhance the decay resistance of kiln to greatest extent, particularly for steam and alkali metal gas to the impact of kiln, extend the service life of kiln.
2) the utility model all devises drainage pore in the functional areas that material has waste gas to produce, and the waste gas in reaction cavity can be made to discharge in time, improves the quality of product while reducing the corrosion of kiln body.
3) the utility model have employed the design of diplopore channel design, and comparatively one channel kiln improves the output of kiln, reduces the production cost of product under the prerequisite ensureing kiln service life.
4) the utility model adopts segmentation structure design, when kiln breaks down, can carry out piecewise maintenance, avoid the destructive reparation of whole kiln, facilitate the maintenance of kiln, reduce the maintenance cost of kiln simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.
The drying and dehydrating section cross section structure schematic diagram that Fig. 1 is a kind of vanadium-nitrogen alloy sintering kiln disclosed in the utility model embodiment;
Fig. 2 is the prereduction section cross section structure schematic diagram disclosed in the utility model embodiment;
Fig. 3 is the reduction and carbonization section cross section structure schematic diagram disclosed in the utility model embodiment;
Fig. 4 is the high-temperature ammonolysis section cross section structure schematic diagram disclosed in the utility model embodiment;
Fig. 5 is the drying and dehydrating section perspective view disclosed in the utility model embodiment;
Fig. 6 is the prereduction section perspective view () disclosed in the utility model embodiment;
Fig. 7 is the prereduction section perspective view (two) disclosed in the utility model embodiment;
Fig. 8 is the prereduction section perspective view (three) disclosed in the utility model embodiment;
Fig. 9 is the prereduction section perspective view (four) disclosed in the utility model embodiment;
Figure 10 is the reduction and carbonization section perspective view disclosed in the utility model embodiment;
Figure 11 is the high-temperature ammonolysis section perspective view disclosed in the utility model embodiment.
In figure: 1, housing; 2, incubation cavity; 3, top cover; 4, heating clamber window; 5, scuttle; 6, tracheae; 7, copper binding post; 8, chimney; 9, drainage pore; 10, crucible; 11, lower window brick; 12, bar shaped track; 13, interval stick; 14, bridge pier brick; 15, lead brick; 16, load-bearing side wall; 17, crossbeam A; 18, caping A; 19, crossbeam B; 20, caping B; 21, cavity is reacted; 22, lockhole; 23, lock; 24, thermal insulation separation hot-zone; 25, upper window brick; 26, trapezoidal bridge plate; 27, square bridge plate; 28, crossbeam C; 29, caping C; 30, square track; 31, monoblock graphite side wall; 32, crossbeam D; 33, caping D; 34, electrical heating elements; 35, crossbeam hangers; 36, corundum brick side wall; 37, load bearing board; 38, heating clamber spacing; 39, heating clamber closer; 40, drainage exhaust brick; 41, fiber insulation board; 42, high temperature resistant chamber against corrosion; 43, lower heating clamber; 44, upper heating clamber.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
The utility model provides a kind of vanadium-nitrogen alloy sintering kiln, and this kiln corrosion resistance is strong, and long service life, product quality is high, easy to maintenance.
Vanadium-nitrogen alloy sintering kiln disclosed in the utility model, comprises drying and dehydrating section, prereduction section, reduction and carbonization section and high-temperature ammonolysis section four functional sections, and each functional section is from outside to inside by housing, incubation cavity, high temperature resistant chamber against corrosion and reaction cavity composition; Outermost housing 1 provides integral frame-type external structure, and what inside and the housing 1 of housing 1 directly contacted is incubation cavity 2, and incubation cavity 2 has 3-10 layer, and different layers selects different materials.Are high temperature resistant chambeies against corrosion 42 in the centre of incubation cavity 2, this is the nucleus determining kiln service life, the difference of the chemical reaction occurred at each functional section according to material, in high temperature resistant chamber 42 against corrosion have employed different structure and materials.The center in high temperature resistant chamber against corrosion 42 is reaction cavitys 21, and reaction cavity 21 provides diplopore passage, can for two crucibles are simultaneously by providing enough spaces.
Drying and dehydrating section is divided into 2-4 joint, and the length often saved is 2-5 rice; Prereduction section is divided into 3-5 joint, and the length often saved is 2-5 rice; Reduction and carbonization section is divided into 3-6 joint, and the length often saved is 2-5 rice; High-temperature ammonolysis section is divided into 6-15 joint, and the length often saved is 2-5 rice.All functions section be distributed in one directly on, connect into an entirety.
Incubation cavity 2 is followed successively by fiber insulation board, insulating brick and refractory brick from outside to inside, high temperature resistant chamber against corrosion 42 comprises lower heating clamber and thermal insulation separation hot-zone, the chamber high temperature resistant against corrosion of drying and dehydrating section, prereduction section and high-temperature ammonolysis section also comprises heating clamber, and reaction cavity is diplopore channel design; Drying and dehydrating section, prereduction section and reduction and carbonization section are equipped with drainage pore.
The chamber high temperature resistant against corrosion of each functional section and the material of reaction cavity are respectively: drying and dehydrating section is that high-alumina clay refractory material is formed, prereduction section is that corundum brick refractory material is formed, reduction section carbonization section is that electrically fused magnesite brick refractory material is formed, and high temperature nitriding section is that high-strength graphite refractory material is formed.
One, illustrate for described drying and dehydrating segment structure below:
See Fig. 1 and Fig. 5, housing 1 is positioned at the outermost layer of kiln, housing 1 be base bottom, the two ends of housing 1 are side walls, right-side wall is distributed with heating clamber window 4, and heating clamber window 4 is sealed by scuttle 5, and heating clamber window 4 is directly connected with heating chamber.There is tracheae 6 heating clamber window 4 upper end, passes into nitrogen in kiln running through tracheae 6, forms one gas curtain at window, avoids air to enter kiln internal oxidition refractory material.There is copper binding post 7 heating clamber window 4 lower end, and adopt aluminum strip to be connected with copper binding post 7 by electrical heating elements 34, copper binding post 7 is connected with transformer by cable again, heats after energising to kiln chamber.The top of housing 1 is dismountable top cover 3, is removed by top cover 3 in kiln building process, and top cover 3 covers after building by laying bricks or stones by kiln, and top cover 3 and housing coupling part divide and use glass resin to seal.
It is inner that incubation cavity 2 is positioned at housing 1, and incubation cavity 2 outermost layer is made up of fiber insulation board, directly contacts with housing 1; Intermediate layer is made up of insulating brick, is a transition zone; Internal layer is made up of refractory brick, and internal layer directly contacts with high temperature resistant chamber 42 against corrosion.
High temperature resistant chamber against corrosion 42 is positioned at the inside of incubation cavity 2, and by lower heating clamber 43, upper heating clamber 44 and thermal insulation separation hot-zone 24 form.
Lower heating clamber 43 is positioned at high temperature resistant chamber against corrosion 42 bottom, the sidewall of lower heating clamber 43 be by bridge pier brick 14 and concordant lower window brick 11 form an entirety and jointly form, have certain spacing between sidewall and sidewall, form the room body of lower heating clamber 43.Be bar shaped track 12 above bridge pier brick 14, bar shaped track 12 is across between two groups of bridge pier bricks 14.Opened by spacer bar every 13 points and fix between bar shaped track 12 and bar shaped track 12.The crucible 10 being contained with VN alloy blank ball moves on bar shaped track 12.
Square bridge plate 27 and trapezoidal bridge plate 26 above lower window brick 11, under square bridge plate 27 and trapezoidal bridge plate 26 are across two groups between window brick 11, the common top, room forming lower heating clamber 43.Electrical heating elements 34 is placed in lower heating clamber 43.The both sides of track 12 are guiding bricks 15, for the mobile route of specification crucible 10 in reaction cavity 21, make it to remain on same directly on.The top of guiding brick 15, namely the two ends of reaction compartment 21 are load-bearing side walls 16, and being positioned at load-bearing side wall upper end for support is crossbeam A17, and crossbeam A17 is across whole reaction cavity 21 cross section.
Upper heating clamber 44 is positioned at high temperature resistant chamber against corrosion 42 topmost, the sidewall of upper heating clamber 44 are crossbeam A17 with concordant upper window brick 25 form an entirety and jointly form, have certain spacing between sidewall and sidewall, the room body of heating clamber 44 in formation.That caping A18, caping A18 are across between two groups of crossbeam A17 above crossbeam A17.
Crossbeam A17 have employed 5 blocks of diamond spar refractory materials, its structure is splicedly suit method, namely two ends are positioned on load-bearing side wall 16 by 2 pieces of tilting legs, and middle employing 3 pieces of symmetrical high-alumina clay bricks of abnormity are spliced, and total ensure that expansion space and the load bearing stength of crossbeam A17.
Have certain spacing between crossbeam A17 and crossbeam A17, there is crossbeam hangers 35 lower end of crossbeam A17, can be placed on the crossbeam hangers 35 of crossbeam A17 by load bearing board 37, in formation heating clamber 44 room at the bottom of, electrical heating elements 34 is flat on load bearing board 37.
That caping A18, caping A18 are across between two groups of crossbeam A17 above crossbeam A17, the top, room of heating clamber 44 in formation.Have employed engagement type structure between caping A18 and caping A18, fully ensure that sealing.Square bridge plate 27 and trapezoidal bridge plate 26 above upper window brick 25, the common top, room forming upper heating clamber 44.
Be connected by thermal insulation separation hot-zone 24 between lower heating clamber 43 with upper heating clamber 44, thermal insulation separation hot-zone 24 is mainly made up of refractory brick and insulating brick.The lower end of lower heating clamber 43 is directly connected with the internal layer of incubation cavity 2 with the upper end of upper heating clamber 44.
Have heating clamber spacing 38 between upper heating clamber 44 and upper heating clamber 44, leave drainage pore 9 in the middle of heating clamber spacing 38, the other parts of heating clamber spacing 38 are sealed by heating clamber closer 39.Drainage pore 9 is built by laying bricks or stones by special drainage exhaust brick 40 and is formed, make drainage pore through reaction cavity 21, high temperature resistant chamber 42 against corrosion, incubation cavity 2, external chimney 8 after housing 1, chimney 8 is directly connected with special cleaning shaft, finally accesses in fiber bag precipitator.Can by controlling the suction draught of fiber bag precipitator motor rotation frequency and then control cleaning shaft, reach the object controlling gas pressure in reaction cavity 21 constantly, effectively ensure that in each functional section the steam reacting and assemble in cavity, ammonia, potassium soda metal gas, the waste gas such as carbon dioxide are discharged in time, avoid waste gas and gather erosion to refractory material and electrical heating elements etc. in kiln chamber, particularly to the erosion of high-temperature-resistant and anti-corrosion chamber middle cross beam, while the service life extending binary channels segmented high-temperature anticorrosive sintering kiln, improve product quality (decrease waste gas element in the product residual).
High temperature resistant chamber against corrosion 42 adopts high-alumina clay brick refractory material, and the internal layer of incubation cavity 2 adopts hollow ball material, intermediate layer warranty mullite material and light thermal-insulation brick, outer employing fiber thermal insulation plate material 41.Housing 1 adopts high-strength steel structural material.
Two, illustrate for prereduction segment structure below:
Agent structure and the drying and dehydrating segment structure of prereduction section are similar, existing to be mainly illustrated by difference:
See Fig. 2, Fig. 6 to Fig. 9, crossbeam B19 in prereduction section have employed 7 blocks of corundum brick refractory materials, and its structure is suspension type combined techniques, and namely two ends are positioned on load-bearing side wall 16 by two pieces of domatic legs, centre hangs on the domatic leg at two ends by 5 blocks of domatic corundum bricks, for the ease of building by laying bricks or stones, on middle corundum brick, indwelling has 2 lockholes 22, after whole crossbeam B19 hangs on two ends leg, lock 23 is inserted in lockhole 22, makes crossbeam B18 keep firm.On the other hand, the lower surface of crossbeam B19 has certain radian, can be conducive to waste gas in the flowing of gas, particularly kiln and discharge reaction cavity 21 in time.
The splicing structure adopted between caping B20 in prereduction section and caping B20, mainly because corundum brick exists certain thermal expansivity under the high temperature conditions, this kind of structural design can ensure its expansion space.
Chamber 42 high temperature resistant against corrosion in prereduction section adopts corundum brick material, and side wall is corundum brick side wall 36.
Three, illustrate for reduction and carbonization segment structure below:
Agent structure and the drying and dehydrating segment structure of reduction and carbonization section are similar, existing to be mainly illustrated by difference:
See Fig. 3, Figure 10, the crossbeam C28 in reduction and carbonization section mainly takes electrically fused magnesite brick refractory material, and crossbeam C28 adopts semicircle vaulted type combining structure.Namely two ends are positioned on load-bearing side wall 16 by 2 pieces of trapezoidal arch springings, and centre forms a semi arch vault jointly by the trapezoidal electrically fused magnesite brick of polylith.
Caping C29 above crossbeam C28 in reduction and carbonization section and semi arch vault, caping C29 is directly built by granular hollow ball material mixing high temperature clay and forms, the upper surface of caping C29 is watered and builds up a plane, be then directly connected with the internal layer of incubation cavity 2.
Crossbeam C28 in reduction and carbonization section adopts semicircle vaulted type combining structure, and caping C29 is built by granular hollow ball material and forms simultaneously, and therefore these functional areas do not have upper heating clamber 44.All heats provide by lower heating clamber 43.
Chamber 42 high temperature resistant against corrosion in reduction and carbonization section adopts electrically fused magnesite brick material.
Four, illustrate for high temperature nitriding segment structure below:
Agent structure and the drying and dehydrating segment structure of high temperature nitriding section are similar, existing to be mainly illustrated by difference:
See Fig. 4, Figure 11, the crossbeam D32 in high temperature nitriding section mainly adopts monoblock high-strength graphite brick structure.Crossbeam D32 is located immediately on monoblock graphite side wall 31.
Caping D33 in high temperature nitriding section also uses monoblock high-strength graphite, is directly placed on the top of crossbeam D32, makes heating clamber 44 form a box-like entirety.
In high temperature nitriding section, square track 30 is across above abutment brick 14.Due to the mainly high temperature nitriding reaction of these functional areas, the exhausted air quantity becoming to generate is few, and less to the erosion impact effect in whole kiln chamber, therefore the block number of square track 30 is relatively less.On the other hand, because the exhausted air quantity generated is minimum, draining steam vent is not designed in these functional areas, and whole function is in relative closure state.
Chamber 42 high temperature resistant against corrosion in high temperature nitriding section adopts high-strength graphite.
The utility model discloses the binary channels segmented high-temperature anticorrosive sintering oven in a kind of VN alloy production process, comprising: drying and dehydrating section, prereduction section, reduction and carbonization section and high-temperature ammonolysis section.Drying and dehydrating section is totally 3 joints, and the length often saved is 2.5 meters; Prereduction section is divided into 4 joints, and the length often saved is 3 meters; Reduction and carbonization section is divided into 3 joints, and the length often saved is 2.5 meters; High-temperature ammonolysis section is divided into 10 joints, and the length often saved is 2.5 meters.All functions section be distributed in one directly on, connect into an entirety.The crucible being contained with VN alloy blank ball is placed on track, the reaction inner chamber of sintering oven is entered from drying and dehydrating section, guiding brick defines the mobile route of crucible in a straight line, crucible moves through drying and dehydrating section successively under the effect of hydraulic push rod, prereduction section, reduction and carbonization section and high-temperature ammonolysis section, different heating-up temperatures is set at each functional section, drying and dehydrating section temperature range is set as 200 DEG C, the temperature range of prereduction section is set as 400 DEG C, the temperature range of reduction and carbonization section is set as 800 DEG C, high temperature nitriding section, the temperature range of this functional section is set as 1300 DEG C, chemical reaction is there is at different temperature in VN alloy blank through the different reaction time, eventually pass and be chilled to about 100 DEG C release sintering ovens, obtain qualified vanadium-nitrogen alloy product.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a vanadium-nitrogen alloy sintering kiln, is characterized in that, comprises drying and dehydrating section, prereduction section, reduction and carbonization section and high-temperature ammonolysis section four functional sections, and described each functional section is from outside to inside by housing, incubation cavity, high temperature resistant chamber against corrosion and reaction cavity composition; Described incubation cavity is followed successively by fiber insulation board, insulating brick and refractory brick from outside to inside, described high temperature resistant chamber against corrosion comprises lower heating clamber and thermal insulation separation hot-zone, the chamber high temperature resistant against corrosion of described drying and dehydrating section, prereduction section and high-temperature ammonolysis section also comprises heating clamber, and described reaction cavity is diplopore channel design; Described drying and dehydrating section, prereduction section and reduction and carbonization section are equipped with drainage pore.
2. a kind of vanadium-nitrogen alloy sintering kiln according to claim 1, it is characterized in that, the chamber high temperature resistant against corrosion of each functional section and the material of reaction cavity are respectively: described drying and dehydrating section is that high-alumina clay brick refractory material is formed, described prereduction section is that corundum brick refractory material is formed, described reduction and carbonization section is that electrically fused magnesite brick refractory material is formed, and described high temperature nitriding section is that high-strength graphite refractory material is formed.
3. a kind of vanadium-nitrogen alloy sintering kiln according to claim 1, is characterized in that, described housing two ends are side wall, and top is top cover, housing right-side wall is distributed with heating clamber window, and described heating clamber window upper end is provided with tracheae, and lower end is provided with copper binding post.
4. a kind of vanadium-nitrogen alloy sintering kiln according to claim 1, it is characterized in that, described lower heating clamber is positioned at high temperature resistant chamber against corrosion bottom, the sidewall of described lower heating clamber is made up of bridge pier brick and lower window brick, the top, room of lower heating clamber is made up of the square bridge plate be positioned at above lower window brick and trapezoidal bridge plate, and described lower heating chamber is provided with electrical heating elements.
5. a kind of vanadium-nitrogen alloy sintering kiln according to claim 1, it is characterized in that, described upper heating clamber is positioned at the top in high temperature resistant chamber against corrosion, the sidewall of described upper heating clamber is made up of crossbeam and upper window brick, the top, room of upper heating clamber is made up of jointly the caping be positioned at above crossbeam and the square bridge plate be positioned at above upper window brick and trapezoidal bridge plate, described crossbeam lower end is provided with crossbeam hangers, be be placed in the load bearing board on crossbeam hangers at the bottom of the room of upper heating clamber, described load bearing board places electrical heating elements.
6. a kind of vanadium-nitrogen alloy sintering kiln according to claim 1, is characterized in that, described insulation district is positioned between heating clamber and lower heating clamber, is made up of refractory brick and insulating brick.
7. a kind of vanadium-nitrogen alloy sintering kiln according to claim 4, is characterized in that, is provided with bar shaped track above described bridge pier brick, is separated and fix between adjacent bar shaped track by spacer bar; Described bar shaped track both sides are provided with guiding brick.
8. a kind of vanadium-nitrogen alloy sintering kiln according to claim 5, it is characterized in that, in the heating clamber spacing of described drainage pore between upper heating clamber and upper heating clamber, described drainage pore is through described reaction cavity, high temperature resistant chamber against corrosion, incubation cavity and housing.
9. a kind of vanadium-nitrogen alloy sintering kiln according to claim 5, is characterized in that, the both sides of described reaction cavity are load-bearing side walls, and for supporting the crossbeam being positioned at load-bearing side wall upper end, described crossbeam is across whole reaction cavity cross section.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106546098A (en) * | 2015-09-23 | 2017-03-29 | 江苏渝鑫合金科技有限公司 | A kind of vanadium-nitrogen alloy sintering kiln |
| CN106546097A (en) * | 2016-10-19 | 2017-03-29 | 中国电子科技集团公司第四十八研究所 | Graphite cathode material sintering furnace coke discharging segment structure and graphite cathode material sintering furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546098A (en) * | 2015-09-23 | 2017-03-29 | 江苏渝鑫合金科技有限公司 | A kind of vanadium-nitrogen alloy sintering kiln |
| CN106546097A (en) * | 2016-10-19 | 2017-03-29 | 中国电子科技集团公司第四十八研究所 | Graphite cathode material sintering furnace coke discharging segment structure and graphite cathode material sintering furnace |
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Address after: 225700 No. 19 Industrial Park, Dai Yao Town, Xinghua, Taizhou, Jiangsu. Patentee after: Jiangsu Yuxin Polytron Technologies Inc Address before: 225700 No. 19 Industrial Park, Dai Yao Town, Xinghua, Taizhou, Jiangsu. Patentee before: Jiangsu Yu Xin alloy Science and Technology Ltd. |