CN203657447U - Reduction section device for producing vanadium-nitrogen alloy through double pushed-slab kilns according to one-step method - Google Patents

Reduction section device for producing vanadium-nitrogen alloy through double pushed-slab kilns according to one-step method Download PDF

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CN203657447U
CN203657447U CN201320773556.5U CN201320773556U CN203657447U CN 203657447 U CN203657447 U CN 203657447U CN 201320773556 U CN201320773556 U CN 201320773556U CN 203657447 U CN203657447 U CN 203657447U
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layer
section
kiln
sections
reduction
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刘会军
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SHAANXI FENGYUAN VANADIUM INDUSTRY SCIENCE & TECHNOLOGY DEVELOPMENT Co Ltd
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SHAANXI FENGYUAN VANADIUM INDUSTRY SCIENCE & TECHNOLOGY DEVELOPMENT Co Ltd
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Abstract

The utility model discloses a reduction section device for producing a vanadium-nitrogen alloy through double pushed-slab kilns according to the one-step method. The reduction section device comprises a first reduction section and a second reduction section which are mutually connected. The first reduction section and the second reduction section are rectangular-structure furnace bodies, wherein each rectangular-structure furnace body is composed of an external heat-preservation layer and an internal heat-preservation layer. A fire-resistant layer is arranged in an inner cavity of each internal heat-preservation layer, wherein the two side walls of an internal cavity of the fire-resistant layer are kiln wall layers, the top of the fire-resistant layer is a kiln arched beam, and the bottom of the fire-resistant layer is a kiln rail layer. A purging system is arranged and extends to the top of each furnace body along a cavity of a kiln chamber. A furnace body shell is arranged outside each furnace body, and each furnace body shell is located on a furnace body support. A window of a heating chamber is formed in one side of the side wall of each furnace body. The height of the fracture surface of a cavity of the kiln chamber of the first reduction section is 380 mm, and the width of the fracture surface of the cavity the kiln chamber of the first reduction section ranges from 720 mm to 740 mm. The height of the fracture surface of a cavity of the kiln chamber of the second reduction section ranges from 450 mm to 500 mm, and the width of the fracture surface of the cavity of the kiln chamber of the second reduction section ranges from 720 mm to 770 mm. According to the reduction section device for producing the vanadium-nitrogen alloy through the double pushed-slab kilns according to the one-step method, the defect that a vacuum furnace structure is used for producing the vanadium-nitrogen alloy in the prior art is overcome, reactions in the stage are full, even and complete, products are good in consistency, high in density and high in yield, energy consumption is low, electricity is saved by 75 percent compared with a conventional kiln, and industrial production can be completely achieved.

Description

A kind of reduction section device that utilizes the two pushed bat kilns of one-step method to produce VN alloy
Technical field
The utility model relates to the device of producing VN alloy, particularly a kind of reduction section device that adopts the two pushed bat kilns of one-step method to produce VN alloy.
Background technology
For production process control and the coordinative composition of equipments of vanadium nitride, metallargist both domestic and external has done a large amount of development work, but eventually because production difficulty is large, with high content of technology, makes this technology fail to be used widely aspect automation application.What the producer of most domestic production vanadium nitride was generally used is nitrogen atmosphere protection list pushed bat kiln, and be still referred from the nitrogen atmosphere protection list pushed bat kiln of sintered magnetic material, its furnace kiln structure is simple, entirety kiln cavity configuration is the same with cross section with single pushed bat kiln cross section of production vanadium nitride sintered magnetic material, can only meet sintered magnetic material; Cause the best sintering time that can not meet VN alloy completely, product quality uniformity is bad, and energy consumption is generally higher, and cost is high.Domestic and international traditional VN alloy is produced vacuum drying oven, coreless induction furnace, vertical heater, the single pushed bat kiln equal segments of mostly adopting of the same trade and is completed reduction, carbonization, nitrogenize, sintering and cooling stage at present.One, process yields is low, energy consumption is high; Its two, holding time is longer, causes and consumes stage by stage the energy, energy resource consumption is high and yield poorly.
Adopting the structure of vacuum drying oven and single pushed bat kiln can not solve mass expanded for traditional mode of production VN alloy has a strong impact on the unimpeded and mass expanded of kiln top of chamber exhaust and has a strong impact on kiln top of chamber and cause sassafras top apart from deficiency, affect the quality problems of VN alloy.Therefore, provide a kind of reduction section device that utilizes the two pushed bat kilns of one-step method to produce VN alloy, become current this area technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide utilizes two pushed bat kilns to produce the reduction section device of VN alloy, this device has solved the deficiency of the structure of traditional mode of production VN alloy employing vacuum drying oven and single pushed bat kiln, and its design is that the material of reduction section is reverted to V hard to tolerate completely from 330 ℃ to 650 ℃ + 4, feature is the discharge that the size in kiln chamber affects energy consumption and carbon dioxide, and during reduction, pellet starts to expand, kiln chamber from small to large, design reduction section kiln chamber meets the problem of mass expanded between reduction period.
The purpose of this utility model realizes by following technical proposals.
Utilize the two pushed bat kilns of one-step method to produce a reduction section device for VN alloy, comprise two sections of one section of interconnective reduction and reduction; One section of described reduction comprises the external thermal insulation, inner thermal insulating layer and the flame retardant coating that distribute successively from outside to inside, in flame retardant coating, be provided with the firing chamber's cavity being formed by kiln parietal layer, stove arched girder and stove rail layer, the one section of firing chamber's cavity section height that reduces is 380mm, and wide is 720-740mm;
Two sections of described reduction comprise the external thermal insulation, inner thermal insulating layer and the flame retardant coating that distribute successively from outside to inside, in flame retardant coating, be provided with the firing chamber's cavity being formed by kiln parietal layer, stove arched girder and stove rail layer, firing chamber's cavity is also provided with upper and lower heating clamber up and down, the two sections of firing chamber's cavity section height that reduce are 450-500mm, and wide is 720-770mm.
Further, one section of described reduction comprises one section of external thermal insulation and one section of rectangular configuration body of heater that inner thermal insulating layer forms, and in described one section of inner thermal insulating layer, is provided with one section of flame retardant coating, and one section of flame retardant coating inner chamber two side is one section of kiln parietal layer, top is primary reformer arch of furnace beam, and bottom is primary reformer kiln rail layer; Form one section of firing chamber's cavity by described one section of kiln parietal layer, primary reformer arch of furnace beam and primary reformer kiln rail layer, be provided with one section of smoke evacuation system along one section of firing chamber's cavity to body of heater top; Described body of heater peripheral hardware primary reformer body case, primary reformer body case is located on primary reformer body bearing; Described sidewall of the furnace body one side is provided with one section of heating clamber window.
Further, two sections of described reduction comprise two sections of external thermal insulations and two sections of rectangular configuration bodies of heater that inner thermal insulating layer forms, in described two sections of inner thermal insulating layers, be provided with two sections of flame retardant coatings, two sections of flame retardant coating inner chamber two sides are two sections of kiln parietal layers, top is secondary reformer arch of furnace beam, bottom is secondary reformer kiln bottom, and secondary reformer kiln bottom top is provided with secondary reformer kiln rail layer; Form two sections of firing chamber's cavitys by described two sections of kiln parietal layers, secondary reformer arch of furnace beam and secondary reformer kiln rail layer, the cavity between secondary reformer kiln rail layer and secondary reformer kiln bottom forms lower heating clamber, and the cavity between secondary reformer arch of furnace beam upper and lower cover plates forms upper heating clamber; In upper heating clamber and lower heating clamber, be provided with U-shaped Elema; Be provided with two sections of smoke evacuation systems along two sections of firing chamber's cavitys to body of heater top; Body of heater peripheral hardware secondary reformer body case, secondary reformer body case is located on secondary reformer body bearing; Sidewall of the furnace body is provided with two sections of heating clamber windows that are connected with upper heating clamber and lower heating clamber.
Further, the external thermal insulation that one section of described reduction and reduction are two sections all adopts two-layer fiberboard heat-insulation layer, and two-layer fiberboard insulation layer thickness is 50-100mm; Described one section of external thermal insulation is located at top layer and a side of one section of inner thermal insulating layer, and described two sections of external thermal insulations are located at side and the top layer of two sections of inner thermal insulating layers, and two sections of external thermal insulations extend to two sections of another sides heating clamber window from top layer.
Further, the inner thermal insulating layer that one section of described reduction and reduction are two sections all adopts the two-layer alumina bubble brick layer distributing successively from outside to inside, the poly-light layer structure of two-layer mullite, and each layer thickness is 50-80mm.
Further, the flame retardant coating that one section of described reduction and reduction are two sections all adopts the poly-light layer of the corundum distributing successively from outside to inside, builds hollow ball layer, magnesium zirconia block layer and corundum brick layer structure, and each layer thickness is 50-114mm.
Further, described one section of kiln parietal layer, primary reformer arch of furnace beam and primary reformer kiln rail layer adopt corundum brick layer or electrode graphite piece layer to form, described two sections of kiln parietal layers and secondary reformer kiln rail layer adopt corundum brick layer or electrode graphite piece layer, wherein, one section of kiln parietal layer and two sections of kiln parietal layer thickness are 80-114mm.
Further, described secondary reformer arch of furnace beam adopts corundum brick, electrode graphite or aluminum-spinel.
The beneficial effects of the utility model are:
1) due to the utility model according to sintering VN alloy at reduction phase, designed specific stove cross section and met sintering VN alloy, this reduction section can reach optimal spatial and meet the requirement in its reduction section space.
Reach in best time range and obtain best product quality, largest production output, lowest energy consumption, the longest stove service life, really become the special stove of reduction section of sintering VN alloy.
2) because external thermal insulation adopts two-layer fiberboard heat-insulation layer, thickness is 50-100mm; Adopt this material high insulating effect under low temperature condition, cheap, meet stove instructions for use, reduce stove cost.
3) because inner thermal insulating layer adopts two-layer alumina bubble brick layer, the poly-light layer structure of two-layer mullite, each layer thickness is 50-80mm, and it is high that it has purity, high temperature resistant, and pore is even, and thermal conductivity is low, protects the temperature unofficial biography of flame retardant coating, guarantees the feature of stove heat insulation effect.
4) flame retardant coating adopts the poly-light layer of corundum, builds hollow ball layer and corundum brick layer structure, each layer thickness is 50-114mm, it has good chemical stability, and acidity or basic slag, metal and glass metal etc. are all had to stronger resistivity, and the corrosion-resistant property of dense product is good.
5) kiln parietal layer, stove arched girder and stove rail layer adopt corundum brick layer or electrode graphite piece layer to form, wherein, kiln parietal layer thickness is 80-114mm, it has good chemical stability, and there is corrosion-resistant property, high temperature resistant, good heat conductivity, the feature such as melting purity is high, corrosion resistance is strong and the life-span is long.
The utility model is produced in the device of VN alloy at two pushed bat kilns of reduction, carbonization, nitrogenize, sintering, cooling synchronous reaction, design the furnace binding of reduction section, complete in vanadium-nitrogen alloy sintering product process for continuous one-step, can impel this elementary reaction fully, evenly, completely, good product consistency, density is high, and more conventional economize on electricity 75% that output is high, energy consumption is low (4000 ℃/TVN), can realize manufacture completely.
Accompanying drawing explanation
Fig. 1 is that the utility model reduces a segment structure schematic diagram.
Fig. 2 is that the utility model reduces two segment structure schematic diagrames.
In figure: 1-1, one section of external thermal insulation; 1-2, one section of inner thermal insulating layer; 1-3, one section of flame retardant coating; 1-4, one section of kiln parietal layer; 1-5, primary reformer arch of furnace beam; 1-6, primary reformer kiln rail layer; 1-7, one section of heating clamber window; 1-8, one section of heating clamber window cover plate; 1-9, primary reformer body case; 1-10, primary reformer body bearing; 1-11, one section of kiln chamber; 1-12, one section of smoke evacuation system; 2-1, two sections of external thermal insulations; 2-2, two sections of inner thermal insulating layers; 2-3, two sections of flame retardant coatings; 2-4, two sections of kiln parietal layers; 2-5, secondary reformer arch of furnace beam; 2-6, secondary reformer kiln rail layer; 2-7, two sections of heating clamber windows; 2-8, two sections of heating clamber window cover plates; 2-9, secondary reformer body case; 2-10, secondary reformer body bearing; 2-11, two sections of kiln chambeies; 2-12, two sections of smoke evacuation systems; 13, stove bottom; 13-1, upper heating clamber; 13-2, lower heating clamber.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
As shown in Figure 1 and Figure 2, the two pushed bat kilns of this utilization are produced the reduction section device of VN alloy, comprise two sections of one section of interconnective reduction and reduction.
Reduction primary reformer body structure as shown in Figure 1, comprise one section of external thermal insulation 1-1 and one section of rectangular configuration body of heater that inner thermal insulating layer 1-2 forms, in one section of inner thermal insulating layer 1-2, be provided with one section of flame retardant coating 1-3, one section of flame retardant coating 1-3 inner chamber two side is one section of kiln parietal layer 1-4, top is primary reformer arch of furnace beam 1-5, and bottom is primary reformer kiln rail layer 1-6; Form one section of cavity 1-11 of firing chamber by described one section of kiln parietal layer 1-4, primary reformer arch of furnace beam 1-5 and primary reformer kiln rail layer 1-6, be provided with one section of smoke evacuation system 1-12 to body of heater top along one section of cavity 1-11 of firing chamber; Body of heater peripheral hardware primary reformer body case 1-9, primary reformer body case 1-9 is located on primary reformer body bearing 1-10; Sidewall of the furnace body one side is provided with one section of heating clamber window 1-7.The one section of high 380mm of being of firing chamber's cavity 1-11 section being made up of one section of kiln parietal layer 1-4, primary reformer arch of furnace beam 1-5 and primary reformer kiln rail layer 1-6, wide is 720-740mm.
The external heat-insulation layer 1-1 of primary reformer of one section of reducing adopts two-layer fiberboard heat-insulation layer, and two-layer fiberboard insulation layer thickness is 50-100mm; One section of external thermal insulation 1-1 is located at top layer and a side of one section of inner thermal insulating layer 1-2.
Reduce two sections furnace binding as shown in Figure 2, comprise two sections of external thermal insulation 2-1 and two sections of rectangular configuration bodies of heater that inner thermal insulating layer 2-2 forms, two sections of inner thermal insulating layer 2-2 inner chambers are provided with two sections of flame retardant coating 2-3, two sections of flame retardant coating 2-3 inner chamber two sides are two sections of kiln parietal layer 2-4, top is secondary reformer arch of furnace beam 2-5, bottom is secondary reformer kiln bottom 13, and secondary reformer kiln bottom 13 tops are provided with secondary reformer kiln rail layer 2-6; Form two sections of cavity 2-11 of firing chamber by two sections of kiln parietal layer 2-4, secondary reformer arch of furnace beam 2-5 and secondary reformer kiln rail layer 2-6, cavity between secondary reformer kiln rail layer 2-6 and secondary reformer kiln bottom 13 forms lower heating clamber 13-2, and the cavity between secondary reformer arch of furnace beam 2-5 upper and lower cover plates forms upper heating clamber 13-1; In upper heating clamber 13-1 and lower heating clamber 13-2, be provided with U-shaped Elema; Be provided with two sections of smoke evacuation system 2-12 to body of heater top along two sections of cavity 2-11 of firing chamber; Body of heater peripheral hardware secondary reformer body case 2-9, secondary reformer body case 2-9 is located on secondary reformer body bearing 2-10; Sidewall of the furnace body is provided with two sections of heating clamber window 2-7 that are connected with upper heating clamber 13-1 and lower heating clamber 13-2.The two sections of cavity 2-11 of firing chamber section height are 450-500mm, and wide is 720-770mm.
The external heat-insulation layer 2-1 of secondary reformer of two sections of reducing adopts two-layer fiberboard heat-insulation layer, and two-layer fiberboard insulation layer thickness is 50-100mm; Two sections of external thermal insulation 2-1 are located at side and the top layer of two sections of inner thermal insulating layer 2-2, and two sections of external thermal insulation 2-1 extend to two sections of another sides heating clamber window 2-7 from top layer.
One section of inner thermal insulating layer 1-2 that above-mentioned reduction is one section all adopts the two-layer alumina bubble brick layer distributing successively from outside to inside, the poly-light layer structure of two-layer mullite with two sections of inner thermal insulating layer 2-2 of two sections of reduction, and each layer thickness is 50-80mm.
Two sections of flame retardant coating 2-3 that the flame retardant coating 1-3 that above-mentioned reduction is a section and reduction are two sections all adopt the poly-light layer of the corundum distributing successively from outside to inside, build hollow ball layer, magnesium zirconia block layer and corundum brick layer structure, and each layer thickness is 50-114mm.
One section of kiln parietal layer 1-4, the primary reformer arch of furnace beam 1-5 that above-mentioned reduction is one section and primary reformer kiln rail layer 1-6 all adopt corundum brick layer or electrode graphite piece layer to form, two sections of kiln parietal layer 2-4 and the secondary reformer kiln rail layer 2-6 of two sections of reducing adopts corundum brick layer or electrode graphite piece layer, wherein, one section of kiln parietal layer 1-4 and two sections of kiln parietal layer 2-4 thickness are 80-114mm.
Wherein, it is the processing of Q235 steel plate that one section of heating clamber window 1-7 and two sections of heating clamber window 2-7 all adopt material, one section of heating clamber window 1-7 is provided with one section of heating clamber window cover plate 1-8, two sections of heating clamber window 2-7 are provided with two sections of heating clamber window cover plate 2-8, and it is the processing of Q235 steel plate that heating clamber window cover plate adopts material; Primary reformer body case 1-9 and secondary reformer body case 2-9 are wide: it is the processing of Q235 steel plate that 1970mm, height: 1855mm adopts material; It is the processing of Q235 steel plate that primary reformer body bearing 1-10 and secondary reformer body bearing 2-10 adopt material; It is 3.0 to 3.1 corundum, magnesium zirconia block, magnesium zirconium titanium brick or high-alumina brick that one section of smoke evacuation system 1-12 and two sections of smoke evacuation system 2-12 adopt material.
This reduction section device is that the material of reduction section is reverted to V hard to tolerate completely from 330 ℃ to 650 ℃ + 4, between reduction period, pellet starts to expand, and that mass expanded has a strong impact on the exhaust of kiln top of chamber is unimpeded, and kiln top of chamber causes sassafras top apart from deficiency, thereby affects the quality of VN alloy.The size in kiln chamber directly affects the discharge of energy consumption and carbon dioxide, and the kiln chamber that reduction section kiln chamber is designed to from small to large meets mass expanded between reduction period.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model; can not assert that the specific embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by submitted to claims.

Claims (8)

1. utilize the two pushed bat kilns of one-step method to produce a reduction section device for VN alloy, it is characterized in that: comprise two sections of one section of interconnective reduction and reduction;
One section of described reduction comprises the external thermal insulation, inner thermal insulating layer and the flame retardant coating that distribute successively from outside to inside, in flame retardant coating, be provided with the firing chamber's cavity being formed by kiln parietal layer, stove arched girder and stove rail layer, the one section of firing chamber's cavity section height that reduces is 380mm, and wide is 720-740mm;
Two sections of described reduction comprise the external thermal insulation, inner thermal insulating layer and the flame retardant coating that distribute successively from outside to inside, in flame retardant coating, be provided with the firing chamber's cavity being formed by kiln parietal layer, stove arched girder and stove rail layer, firing chamber's cavity is also provided with upper and lower heating clamber up and down, the two sections of firing chamber's cavity section height that reduce are 450-500mm, and wide is 720-770mm.
2. the reduction section device that utilizes the two pushed bat kilns of one-step method to produce VN alloy according to claim 1, it is characterized in that: one section of rectangular configuration body of heater that comprises that one section of external thermal insulation (1-1) and one section of inner thermal insulating layer (1-2) form of described reduction, in described one section of inner thermal insulating layer (1-2), be provided with one section of flame retardant coating (1-3), one section of flame retardant coating (1-3) inner chamber two side is one section of kiln parietal layer (1-4), top is primary reformer arch of furnace beam (1-5), and bottom is primary reformer kiln rail layer (1-6); Form one section of firing chamber's cavity (1-11) by described one section of kiln parietal layer (1-4), primary reformer arch of furnace beam (1-5) and primary reformer kiln rail layer (1-6), be provided with one section of smoke evacuation system (1-12) along one section of firing chamber's cavity (1-11) to body of heater top; Described body of heater peripheral hardware primary reformer body case (1-9), primary reformer body case (1-9) is located on primary reformer body bearing (1-10); Described sidewall of the furnace body one side is provided with one section of heating clamber window (1-7).
3. the reduction section device that utilizes the two pushed bat kilns of one-step method to produce VN alloy according to claim 1, it is characterized in that: two sections of rectangular configuration bodies of heater that comprise that two sections of external thermal insulations (2-1) and two sections of inner thermal insulating layers (2-2) form of described reduction, in described two sections of inner thermal insulating layers (2-2), be provided with two sections of flame retardant coatings (2-3), two sections of flame retardant coatings (2-3) inner chamber two side is two sections of kiln parietal layers (2-4), top is secondary reformer arch of furnace beam (2-5), bottom is secondary reformer kiln bottom (13), secondary reformer kiln bottom (13) top is provided with secondary reformer kiln rail layer (2-6), form two sections of firing chamber's cavitys (2-11) by described two sections of kiln parietal layers (2-4), secondary reformer arch of furnace beam (2-5) and secondary reformer kiln rail layer (2-6), cavity between secondary reformer kiln rail layer (2-6) and secondary reformer kiln bottom (13) forms lower heating clamber (13-2), and the cavity between secondary reformer arch of furnace beam (2-5) upper and lower cover plates forms upper heating clamber (13-1), in upper heating clamber (13-1) and lower heating clamber (13-2), be provided with U-shaped Elema, be provided with two sections of smoke evacuation systems (2-12) along two sections of firing chamber's cavitys (2-11) to body of heater top, body of heater peripheral hardware secondary reformer body case (2-9), secondary reformer body case (2-9) is located on secondary reformer body bearing (2-10), sidewall of the furnace body is provided with the two sections of heating clamber windows (2-7) that are connected with upper heating clamber (13-1) and lower heating clamber (13-2).
4. produce the reduction section device of VN alloy according to the two pushed bat kilns of one-step method that utilize described in claim 1,2 or 3, it is characterized in that: the external thermal insulation that one section of described reduction and reduction are two sections all adopts two-layer fiberboard heat-insulation layer, and two-layer fiberboard insulation layer thickness is 50-100mm; Described one section of external thermal insulation (1-1) is located at top layer and a side of one section of inner thermal insulating layer (1-2), described two sections of external thermal insulations (2-1) are located at side and the top layer of two sections of inner thermal insulating layers (2-2), and two sections of external thermal insulations (2-1) extend to the two sections of heating clamber windows in another side (2-7) from top layer.
5. produce the reduction section device of VN alloy according to the two pushed bat kilns of one-step method that utilize described in claim 1,2 or 3, it is characterized in that: the inner thermal insulating layer that one section of described reduction and reduction are two sections all adopts the two-layer alumina bubble brick layer distributing successively from outside to inside, the poly-light layer structure of two-layer mullite, and each layer thickness is 50-80mm.
6. produce the reduction section device of VN alloy according to the two pushed bat kilns of one-step method that utilize described in claim 1,2 or 3, it is characterized in that: the flame retardant coating that one section of described reduction and reduction are two sections all adopts the poly-light layer of the corundum distributing successively from outside to inside, builds hollow ball layer, magnesium zirconia block layer and corundum brick layer structure, and each layer thickness is 50-114mm.
7. produce the reduction section device of VN alloy according to the two pushed bat kilns of one-step method that utilize described in claim 2 or 3, it is characterized in that: described one section of kiln parietal layer (1-4), primary reformer arch of furnace beam (1-5) and primary reformer kiln rail layer (1-6) adopt corundum brick layer or electrode graphite piece layer to form, described two sections of kiln parietal layers (2-4) and secondary reformer kiln rail layer (2-6) adopt corundum brick layer or electrode graphite piece layer, wherein, one section of kiln parietal layer (1-4) and two sections of kiln parietal layers (2-4) thickness are 80-114mm.
8. the reduction section device that utilizes the two pushed bat kilns of one-step method to produce VN alloy according to claim 3, is characterized in that: described secondary reformer arch of furnace beam (2-5) adopts corundum brick, electrode graphite or aluminum-spinel.
CN201320773556.5U 2013-11-27 2013-11-27 Reduction section device for producing vanadium-nitrogen alloy through double pushed-slab kilns according to one-step method Expired - Lifetime CN203657447U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106288816A (en) * 2016-07-29 2017-01-04 佛山市诺普材料科技有限公司 Mullite is as the application of heat treatment carrier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106288816A (en) * 2016-07-29 2017-01-04 佛山市诺普材料科技有限公司 Mullite is as the application of heat treatment carrier

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