CN202393204U - High-temperature reduction furnace - Google Patents
High-temperature reduction furnace Download PDFInfo
- Publication number
- CN202393204U CN202393204U CN2011204892048U CN201120489204U CN202393204U CN 202393204 U CN202393204 U CN 202393204U CN 2011204892048 U CN2011204892048 U CN 2011204892048U CN 201120489204 U CN201120489204 U CN 201120489204U CN 202393204 U CN202393204 U CN 202393204U
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- heater
- fire door
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Abstract
The utility model discloses a high-temperature reduction furnace, which comprises a furnace body, a furnace head end, a furnace tail end, a rail and a boat pushing mechanism. A heating device is arranged in the furnace body, the furnace head end and the furnace tail end are arranged at two ends of the furnace body respectively, a transition section is further arranged between the furnace tail end and the furnace body, the furnace head end is connected with a first inner furnace door and a first outer furnace door, and the furnace tail end is connected with a second inner furnace door and a second outer furnace door. The reduction furnace can bear higher working temperature and produce more uniform tungsten powder with a larger grain size, hydrogen is recycled, the operating control process is automated, production cost is effectively reduced, and operating conditions are improved.
Description
Technical field
The utility model relates to a kind of high temperature reduction stove, the continuous hydrogen reducing furnace of particularly a kind of pusher high temperature.
Background technology
Tungsten powder is the primary raw material of processing powder metallurgy tungsten product and tungsten alloy.At present; Domestic main employing hydrogen reduction method prepares tungsten powder, and device therefor is generally the tubular type reduction furnace, and using more is 13 to 15 pipe reduction furnaces; The boiler tube of these reduction furnaces is made up of metal material; Operating temperature generally, is merely able to produce the tungsten powder of particle diameter 15 μ m all below 1100 ℃.
Produce the above ultra coarse granule tungsten powder of particle diameter 15 μ m, the high temperature of needs more than 1250 ℃ in theory because only under this temperature, can realize that the gathering of tungsten powder particles is grown up.A kind of technology of producing ultra thick tungsten powder is: the salt that contains sodium metal, lithium or potassium through interpolation; Under about 1000 ℃ of temperature, reduce; Promote growing up of particle; But the tungsten powder particle-size that this method is produced is inhomogeneous and to occur additive easily residual and influence product quality, therefore when the high-quality carbide alloy of production, does not often use such tungsten powder.
A kind of in addition technology of producing ultra coarse granule tungsten powder is to adopt 1250 ℃ to 1300 ℃ high temperature reduction technology, and used equipment is single tube molybdenum filament heating muffle stove, and furnace tube material is a corundum.This process using batch (-type) push belt material boat, the boat material is a pure nickel, uses the back distortion serious, and consumption is big, and operating temperature also receives strict restriction, can't improve again, also can't realize passing in and out automatically boat.In order to accelerate reduction, and guarantee reduction thoroughly, need to use excessive hydrogen that because hydrogen can not recycle, the superfluous hydrogen of reaction can only the direct-fire burning, production cost is high, and work load is big.
Existing reduction furnace burner stove tail all is single fire door, when opening fire door, can't guarantee the stable of Hydrogen Vapor Pressure, causes tungsten powder oxidation in the stove simultaneously, and heat-energy losses is serious.
The utility model content
The goal of the invention of the utility model is: the problem to above-mentioned existence, a kind of high temperature reduction stove is provided, and this reduction furnace can bear higher operating temperature, the more slightly more uniform tungsten powder of production granularity; Hydrogen recovery is utilized; Control process and realize automation; Effectively reduce production costs, improve operating condition.
For realizing above-mentioned purpose, the utility model solves the technical scheme that its technical problem adopted and is:
A kind of high temperature reduction stove; Comprise body of heater, burner end, stove tail end, track and push away boat mechanism; Be provided with heater in the said body of heater, said burner end and stove tail end are separately positioned on the two ends of body of heater, also are provided with changeover portion between said stove tail end and the body of heater; Said burner end is connected with the fire door and the first outer fire door in first, and said stove tail end is connected with the fire door and the second outer fire door in second.
As optimal way, also be provided with the boat location checkout gear on the said high temperature reduction stove.
As optimal way, be connected with pressure-detecting device on said body of heater and the burner end.
As optimal way, said stove tail end is provided with slag-drip opening, and the port of export of this slag-drip opening is provided with fluid-tight.
As optimal way, said burner end is connected with back hydrogen water seal (12), and said time hydrogen water seal (12) is connected with hydrogen gas recovering device.
As optimal way, also be connected with the atmosphere adjuster on the said stove tail end.
Fire door and outer fire door in the utility model burner end and stove tail end all are connected with when passing in and out boat like this, can stop hydrogen gas leakage or air to get in the stove, guarantee production operation safety; No matter open or close fire door, can guarantee the pressure stability in the stove, for hydrogen recovery has been created condition.Superfluous hydrogen and the gas product water steam of reaction passes through special cooling drip washing together, is connected to the import of hydrogen pump again by pipeline, gets into cleaning system, through recycle behind the drying and dehydrating; Advance boat, push away boat and go out boat all to have realized automatic control, boat evenly advances in stove continuously, and the tungsten powder particle-size of producing like this is uniformity more.
Owing to adopted technique scheme, the beneficial effect of the utility model is:
The utility model is skillfully constructed, reasonable in design, the operation automation level is high, production efficiency is high, cost is low, tungsten powder particle-size is thick and evenly.
Compare with existing high temperature reduction stove, the tungsten powder output of separate unit reduction furnace was brought up to 180kg/ days by 90kg/ days, 30 tons of annual raising the output, 1,080 ten thousand yuan of newly-increased incomes from sales.Tungsten powder hydrogen consumption per ton reduces 1000m
3, practice thrift 1 of boat, practice thrift electric 2000kwh, add up to 4300 yuan.Every reduction furnace year practices thrift and is worth 25.8 ten thousand yuan, and production efficiency improves three times per capita.
Because the raising of tungsten powder quality can also promote the lifting of alloy mass, prolong alloy service life, improve the added value of alloy and instrument, remarkable in economical benefits.Reduction furnace of the present invention also can be used for other metal dust of high-temperature hydrogen reduction preparation, like molybdenum powder.
Description of drawings
Fig. 1 is the utility model structural representation.
Mark among the figure: 1 is body of heater, and 2 is the burner end, and 3 is the stove tail end, and 4 is changeover portion; 5 is fire door in first, and 6 is the first outer fire door, and 7 is fire door in second, and 8 is the second outer fire door; 9 is pressure-detecting device, and 10 is slag-drip opening, and 11 is heater, and 12 are back the hydrogen water seal; 13 is the atmosphere adjuster, and 14 is the nitrogen bus-bar, and 15 is the hydrogen bus-bar.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Embodiment 1: as shown in Figure 1; A kind of high temperature reduction stove comprises body of heater 1, burner end 2, stove tail end 3, track, boat location checkout gear and pushes away boat mechanism, is provided with heater 11 in the said body of heater 1; Said burner end 2 and stove tail end 3 are separately positioned on the two ends of body of heater 1; Also be provided with changeover portion 4 between said stove tail end 3 and the body of heater 1, said burner end 2 is connected with the fire door 5 and the first outer fire door 6 in first, and said stove tail end 3 is connected with the fire door 7 and the second outer fire door 8 in second.
Be connected with pressure-detecting device 9 on said body of heater 1 and the burner end 2.Said stove tail end 3 is provided with slag-drip opening 10, and the port of export of this slag-drip opening 10 is provided with fluid-tight.Also be connected with atmosphere adjuster 13 on the stove tail end 3.Said burner end 2 is connected with back hydrogen water seal 12, and said time hydrogen water seal 12 is connected with hydrogen gas recovering device.
The working method of present embodiment is following:
The band material boat that tungsten oxide is housed transmits automatically through track and arrives the first outer fire door place, and at this moment, the first interior fire door is closed; First is outer door opened, and boat gets into the centre of two fire doors, and inside and outside fire door is closed simultaneously; Feed nitrogen with deaeration; After reaching requirement, door opened in first, boat at the uniform velocity advances.Boat is reduced in the high-temperature region through burner end and body of heater successively and is tungsten powder, passes through changeover portion and stove tail end again and cools off.Boat arrives assigned address through the second interior fire door, and detection system provides signal; Close fire door in second, open the second outer fire door, boat is sent into track; Close the second outer fire door again, after the two fire doors centre of discharging feeds nitrogen with deaeration, reaches requirement; Door opened in second, get into advanced state in the stove.The boat of band material is through behind the manual cleaning, and automatic or manual charging is with the material boat to transmit the first outer fire door place that arrives feed end automatically through track, realizes do action.
The hydrogen of reduction reaction is got into by the stove tail through the metering back; Simultaneously in order to guarantee to produce thicker tungsten powder; Can regulate hydrogen in the stove and vapour concentration through the atmosphere adjuster; The hydrogen that reaction is superfluous and the moisture of generation get into back the hydrogen water seal, and here hydrogenesis gets into the utilization of hydrogen gas recovering, purifying systemic circulation and the hydrogen process is washed and cool off the back.
Also need carry out strictness control to the Hydrogen Vapor Pressure of body of heater, cross when low when Hydrogen Vapor Pressure, pressure-detecting device can be pointed out warning, and sends into nitrogen to body of heater, to guarantee the safety of reduction furnace.
Embodiment 2: a kind of high temperature reduction stove; Comprise body of heater 1, burner end 2, stove tail end 3, track, boat location checkout gear and push away boat mechanism; Be provided with heater 11 in the said body of heater 1, said burner end 2 and stove tail end 3 are separately positioned on the two ends of body of heater 1, also are provided with changeover portion 4 between said stove tail end 3 and the body of heater 1; Said burner end 2 is connected with the fire door 5 and the first outer fire door 6 in first, and said stove tail end 3 is connected with the fire door 7 and the second outer fire door 8 in second.
Be connected with pressure-detecting device 9 on said body of heater 1 and the burner end 2.Also be connected with atmosphere adjuster 13 on the stove tail end 3.Said burner end 2 is connected with back hydrogen water seal 12, and said time hydrogen water seal 12 is connected with hydrogen gas recovering device.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (6)
1. high temperature reduction stove; It is characterized in that: comprise body of heater (1), burner end (2), stove tail end (3), track and push away boat mechanism; Be provided with heater (11) in the said body of heater (1); Said burner end (2) and stove tail end (3) are separately positioned on the two ends of body of heater (1); Also be provided with changeover portion (4) between said stove tail end (3) and the body of heater (1), said burner end (2) is connected with the fire door (5) and the first outer fire door (6) in first, and said stove tail end (3) is connected with the fire door (7) and the second outer fire door (8) in second.
2. a kind of high temperature reduction stove as claimed in claim 1 is characterized in that: also be provided with the boat location checkout gear on the said high temperature reduction stove.
3. according to claim 1 or claim 2 a kind of high temperature reduction stove is characterized in that: be connected with pressure-detecting device (9) on said body of heater (1) and the burner end (2).
4. according to claim 1 or claim 2 a kind of high temperature reduction stove, it is characterized in that: said stove tail end (3) is provided with slag-drip opening (10), and the port of export of this slag-drip opening (10) is provided with fluid-tight.
5. according to claim 1 or claim 2 a kind of high temperature reduction stove, it is characterized in that: be connected with back hydrogen water seal (12) on the said burner end (2), said time hydrogen water seal (12) is connected with hydrogen gas recovering device.
6. according to claim 1 or claim 2 a kind of high temperature reduction stove is characterized in that: also be connected with atmosphere adjuster (13) on the said stove tail end (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204892048U CN202393204U (en) | 2011-11-30 | 2011-11-30 | High-temperature reduction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204892048U CN202393204U (en) | 2011-11-30 | 2011-11-30 | High-temperature reduction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202393204U true CN202393204U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204892048U Expired - Lifetime CN202393204U (en) | 2011-11-30 | 2011-11-30 | High-temperature reduction furnace |
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| CN (1) | CN202393204U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108302A (en) * | 2017-06-23 | 2019-01-01 | 赣州海盛钨钼集团有限公司 | A kind of rotary reduction furnace for high purity tungsten production |
| CN111545858A (en) * | 2020-05-12 | 2020-08-18 | 深圳市鑫陶窑炉设备有限公司 | Automatic brazing furnace |
| CN112857031A (en) * | 2020-12-31 | 2021-05-28 | 崇义章源钨业股份有限公司 | Oxidation reduction furnace |
| CN114015954A (en) * | 2021-09-08 | 2022-02-08 | 先导薄膜材料有限公司 | Device and method for reducing oxygen content in aluminum alloy |
-
2011
- 2011-11-30 CN CN2011204892048U patent/CN202393204U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108302A (en) * | 2017-06-23 | 2019-01-01 | 赣州海盛钨钼集团有限公司 | A kind of rotary reduction furnace for high purity tungsten production |
| CN111545858A (en) * | 2020-05-12 | 2020-08-18 | 深圳市鑫陶窑炉设备有限公司 | Automatic brazing furnace |
| CN112857031A (en) * | 2020-12-31 | 2021-05-28 | 崇义章源钨业股份有限公司 | Oxidation reduction furnace |
| CN114015954A (en) * | 2021-09-08 | 2022-02-08 | 先导薄膜材料有限公司 | Device and method for reducing oxygen content in aluminum alloy |
| CN114015954B (en) * | 2021-09-08 | 2022-07-01 | 先导薄膜材料有限公司 | Method for reducing oxygen content in aluminum alloy |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |
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| CX01 | Expiry of patent term |