CN87203863U - Roasting unit for oxidate powder - Google Patents
Roasting unit for oxidate powder Download PDFInfo
- Publication number
- CN87203863U CN87203863U CN 87203863 CN87203863U CN87203863U CN 87203863 U CN87203863 U CN 87203863U CN 87203863 CN87203863 CN 87203863 CN 87203863 U CN87203863 U CN 87203863U CN 87203863 U CN87203863 U CN 87203863U
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- CN
- China
- Prior art keywords
- crucible
- roasting
- oxide powder
- retort
- thermal insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a roasting device for oxide powder, which is composed of a heat resisting stainless steel stove pot, a ceramic crucible, and other components made of the ceram of niobium oxide in the stove. The roasting device for oxide powder is heated by an external electric heating element for roasting. In the roasting process, gas or steam escaped from the material does not contact with the stove pot, gas or steam which contacts with the stove pot does not contact with the material in the crucible, and some gas or steam passes through the material to be roasted in the crucible, which strengthens the roasting effect. Thus, the utility model is suitable for roasting oxide powder which generates the acid and alkali gas or steam and preparing the oxide of high purity.
Description
The utility model is a kind of calciner, is used for the roasting of oxide powder, is particularly suitable for having in the roasting process roasting of the oxide powder material that soda acid gas or steam produces.
In order to obtain highly purified oxide powder, raw material should be placed roasting under the high temperature of hundreds of degree usually.The high-temperature-resistant and anti-corrosion problem of crucible material and structure in the stove material usually is difficult to solve.For example produce high-purity high niobium oxide, tantalum oxide, normally in the stove of Muffle furnace and so on, under 1200 ℃ temperature, carry out tens of hours roasting with platinum crucible splendid attire niobium hydroxide, tantalum hydroxide.Platinum is very expensive, causes product cost very high, simultaneously gas or the steam heavy corrosion body of heater material of HF that overflows in the roasting process and so on, influence furnace life, and the product pollution roasting material in the corrosion process, in addition, this roasting mode also is not easy to make the material roasting thorough.
The purpose of this utility model is to create a kind of new calciner, enables that roasting goes out the higher oxide powder material of purity under short roasting time or lower sintering temperature, does not use platinum crucible, and body of heater does not have etching problem, the pollution-free problem of material.This device should can be used for roasting Ta
2O
5, Nh
2O
5, WO
3, MoO
3Powder material.
Solution of the present utility model is: with the ceramic crucible splendid attire material of any one making in the oxide identical with product of roasting or niobium oxide tantalum oxide, tungsten oxide, the molybdenum oxide, be positioned in the metal retort, by placing the outer heater heating of retort, crucible is by the crucible holder rest, topped thermal insulation board above the crucible, stool, crucible, thermal insulation board all place within the sleeve pipe, and the bottom of retort is mounted with air inlet pipe, retort top is multiple with crown cap, and lid central authorities are mounted with escape pipe.Air inlet pipe communicates with air supply system or atmosphere, and escape pipe communicates with extract system.All members in the retort all are made of the ceramic material of high-temperature-resistant and anti-corrosion.In this structure, near gas air inlet pipe arrives crucible or steam enter by the aperture on crucible bottom and the wall among the material, with escaping gas in the material or steam, perhaps with material in some composition such as F
-, Cl
-, SO
4 -, NH
4 +Gas or steam Deng the generation of reaction back, directly enter escape pipe and drained by extract system, do not contact, then enter escape pipe, do not contact with material in the crucible via the aperture on the escape pipe sidewall with gas or the steam that retort directly contacts with the metal retort.
Therefore, the utility model has been avoided the corrosion to the body of heater material of escaping gas in the roasting material or steam, and the issuable corrosion thing of retort metal material can not enter the crucible district and pollutes material in the crucible during roasting; There are gas or steam to pass the interior material to be baked of crucible in the roasting process, by selecting suitable gas or steam kind, can quicken the carrying out of some physical process in the roasting process or chemical reaction, perhaps promote to wait to bake the removal of some impurity in the material, thus can make material in the short period of time or lower roasting temperature get more thorough; In addition, do not make crucible owing to do not use platinum with ceramic material, equipment investment reduces, and helps reducing product cost.
The niobium oxide ceramic material is to F
-, Cl
-, SO
4 -, NH
4 +Good anti-corrosion capability is all arranged, and still very high at 1000 ℃ of following corrosion strengths and intensity.Therefore be the calciner of stove inner member with the niobium oxide pottery, can be used for roasting Ta(OH)
5, Nb(OH)
5, H
2WO
4, H
2MoO
4Produce corresponding oxide Ta
2O
5, Nb
2O
5, WO
3, MoO
3Use the oxide identical to make ceramic crucible, be more conducive to guarantee the purity of product of roasting with product of roasting.
Accompanying drawing has been described an embodiment of the present utility model.
Accompanying drawing 1: oxide powder material calciner cutaway view
Accompanying drawing 2: crucible front view and vertical view
Fig. 1 has described and has been mainly used in the calciner that the roasting niobium hydroxide is produced niobium oxide powder.
The retort made from heat-resistance stainless steel (2) is positioned in the be furnished with heater heating furnace of (1), and the retort bottom is welded with an air inlet pipe (3).The gas or the steam that are come by air supply system enter in the chamber of gas distributor (4) by air inlet pipe.Gas distributor (4) is a hat niobium oxide ceramic member, at the bottom of being buckled in jar on, the uniform through hole of its top and sidewall.Sleeve pipe (5) and stool (6) are being placed in the top of gas distributor (4), and base (6) is gone up and placed crucible (7), and crucible (7) loam cake is with thermal insulation board assembly (8).They all are the niobium oxide ceramic members.Base (6), crucible (7), thermal insulation board assembly (8) all are in the inside of sleeve pipe (5).Base (6) is assembled by two pitch circle barrier parts, and the dividing plate of a uniform through hole is arranged in every joint chamber, and also all is furnished with through hole on every joint wall.Thermal insulation board assembly (8) is siphunculus and the four layers of assembly that flat board constitutes that are positioned at central authorities by.Bottom one deck is a crucible cover in the flat board, and one deck topmost covers the upper port of sleeve pipe.Stainless steel bell (9) is arranged at retort top, be equipped with heat resistant joint ring (11) between bell (9) and the retort (2), be mounted with escape pipe (10) in the metal base of bell central authorities, it is a niobium oxide ceramic bend pipe, one end is connected mutually with the duct member of thermal insulation board assembly (8) central authorities, and the other end is connected with extract system.
Fig. 2 is the niobium oxide ceramic crucible that the roasting oxidation niobium is used, and all has aperture on the wall of its bottom, sidewall and central cecum pipe fitting, and the gas or the steam that come from gas distributor can enter in the crucible by these apertures.
The gas or the steam that are come out by gas distributor (4) are divided into two strands: one is come out by the hole on distributor (4) sidewall, enter the space between sleeve outer wall and retort (2) madial wall, upwards flow near the escape pipe (10), the hole from escape pipe (10) sidewall enters escape pipe; Another strand enters sleeve pipe (5) volume inside by the hole on gas distributor (4) top, near stool (6) the arrival crucible by porous, pass at the bottom of the crucible and sidewall of crucible enters material (12) inside, gas that produces in material then or the steam material body of powder (12) of overflowing, the duct member by thermal insulation board assembly (8) central authorities enters escape pipe (10).
Use device shown in the drawings, below the niobium oxide powder impurity fluorine content 20PPm that 4～5 hours roasting niobium hydroxides under 800～850 ℃ the temperature obtain, total purity is more than 99.95%.And with platinum crucible 24 hours gained niobium oxide powders of 1200 ℃ of roastings in Muffle furnace, purity is no more than 99%.When production capacity was identical, the former power consumption only needed the latter's 1/5th.
Claims (6)
1, a kind of oxide powder calciner, the outside is a metal retort, place stool in the retort, crucible and thermal insulation board assembly, air inlet pipe is arranged at the bottom of the retort, retort has covered escape pipe, it is characterized in that, stool (6) and crucible (7) all are porous, thermal insulation board assembly (8) central authorities are a siphunculus, these three members (6,7,8) together with all be installed in around their sleeve pipe (5) gas distributor (4) that communicates with air inlet pipe (3) above, face and the uppermost one deck dividing plate of thermal insulation board assembly (8) cover the upper port of sleeve pipe (5), gas distributor (4) top and sidewall all are furnished with through hole, and escape pipe (10) is connected mutually with siphunculus on the thermal insulation board assembly (8), communicates with sleeve pipe (5) inner space thus, be distributed with hole on the sidewall of escape pipe (10), communicate with sleeve pipe (5) space outerpace thus.
2, oxide powder calciner according to claim 1 is characterized in that gas distributor (4), sleeve pipe (5), stool (6), thermal insulation board assembly (8), escape pipe (10) are the niobium oxide ceramic member.
3,, it is characterized in that crucible (7) is the niobium oxide ceramic member according to claim 1 and 2 described oxide powder calciners.
4,, it is characterized in that crucible (7) is the tantalum oxide ceramic member according to claim 1 and 2 described oxide powder calciners.
5,, it is characterized in that crucible (7) is the tungsten oxide ceramic member according to claim 1 and 2 described oxide powder calciners.
6,, it is characterized in that crucible (7) is the molybdenum oxide ceramic member according to claim 1 and 2 described oxide powder calciners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87203863 CN87203863U (en) | 1987-03-23 | 1987-03-23 | Roasting unit for oxidate powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87203863 CN87203863U (en) | 1987-03-23 | 1987-03-23 | Roasting unit for oxidate powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87203863U true CN87203863U (en) | 1988-05-18 |
Family
ID=4819810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87203863 Withdrawn CN87203863U (en) | 1987-03-23 | 1987-03-23 | Roasting unit for oxidate powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87203863U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083077C (en) * | 1996-05-20 | 2002-04-17 | 三菱麻铁里亚尔硅材料株式会社 | Crucible fxing method and support base and base assembly equipment |
| CN100383267C (en) * | 2002-01-21 | 2008-04-23 | 登莱秀公司 | Reductive method for production of metallic elements such as chrome using a crucible with a perforated wall |
| CN114804868A (en) * | 2022-04-29 | 2022-07-29 | 吉林电力股份有限公司长春热电分公司 | Preparation method of tungsten trioxide ceramic skeleton crucible |
-
1987
- 1987-03-23 CN CN 87203863 patent/CN87203863U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083077C (en) * | 1996-05-20 | 2002-04-17 | 三菱麻铁里亚尔硅材料株式会社 | Crucible fxing method and support base and base assembly equipment |
| CN100383267C (en) * | 2002-01-21 | 2008-04-23 | 登莱秀公司 | Reductive method for production of metallic elements such as chrome using a crucible with a perforated wall |
| US7513930B2 (en) | 2002-01-21 | 2009-04-07 | Delachaux S.A. | Reductive method for production of metallic elements such as chrome using a crucible with a perforated wall |
| CN114804868A (en) * | 2022-04-29 | 2022-07-29 | 吉林电力股份有限公司长春热电分公司 | Preparation method of tungsten trioxide ceramic skeleton crucible |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |