CN202254760U - Push boat type double-tube reduction furnace - Google Patents
Push boat type double-tube reduction furnace Download PDFInfo
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- CN202254760U CN202254760U CN2011203038021U CN201120303802U CN202254760U CN 202254760 U CN202254760 U CN 202254760U CN 2011203038021 U CN2011203038021 U CN 2011203038021U CN 201120303802 U CN201120303802 U CN 201120303802U CN 202254760 U CN202254760 U CN 202254760U
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Abstract
The utility model discloses a push boat type double-tube reduction furnace which comprises a boat, a push boat mechanism, a boat inlet, a furnace tube, a reduction zone, a cooling zone, a gas inlet, a boat outlet and a drying zone, wherein the furnace tube passes through the reduction zone and the cooling zone; the gas inlet is arranged in a tube body of the furnace tube; the drying zone is positioned at the front end of the boat inlet; both ends of the drying zone are open; and the boat is pushed by the boat push mechanism to enter the furnace tube from the boat inlet after passing through the drying zone and then sequentially pass through the reduction zone, the cooling zone and the boat outlet. In the push boat type double-tube reduction furnace, the moisture content of raw materials before the raw materials enter the reduction furnace is reduced to below 0.2 percent, the raw materials are more sufficiently reduced, the oxygen content is lower, and the reduction granularity is finer.
Description
Technical field
The utility model relates to a kind of push boat type two pipe reduction furnaces.
Background technology
Reduction furnace is as a kind of equipment of producing powder, and the application in industries such as powder metallurgy is very extensive.Mainly contain push boat type and steel pipe type at home, the push boat type reduction furnace then has two pipes, four pipes, eight pipes or 14 pipe reduction furnaces.It is configured to: common enclosure and framework, heat-resisting boiler tube, chamotte brick, flame retardant coating be setting-in resistance wire and heater light-weight brick material up and down, pneumatic propelling material, burner bottom dress explosion-proof apparatus.
The production major part of cobalt powder all is to manage in the push boat type reduction furnaces two through cobalt oxalate, under hot conditions, becomes cobalt powder with hydrogen reducing.This two pipe push boat type reduction furnace high temperature furnace pipe ranges are about 6 meters, and furnace temperature is from 500 ℃～1050 ℃, and temperature control divides three band or the four-tapes.The general length of its salband also is about 6 meters, and the overcoat water leg is so that the material behind high temperature is cooled to room temperature.
The granularity of common cobalt powder is generally the 1.0-3.0 micron, oxygen content < 0.5%.The temperature of its reduction is higher, so the moisture in the raw material is little to its influence, its reduction temperature generally is controlled at 500 ℃-650 ℃, and the time is 2-3 hour to material in the high-temperature region, and the time of salband also is 2-3 hour.
The requirement of super-fine cobalt powder be Fsss less than 1.0 microns, to make its oxygen content < 0.5% simultaneously.In the reduction process, it is high to control cobalt powder fine size and oxygen content, must the many factors of control, and thin and moisture content is few, the reduction furnace temperature is suitable, the recovery time is suitable, boat charge is suitable, hydrogen flowing quantity is big, hydrogen moisture content is low etc. like raw material.Under the identical situation of other conditions, vapour content is big more in the reducing atmosphere, and then the cobalt powder granularity is just thick more, and oxygen content is then high more.Causing vapour content is high in the reducing atmosphere reason except the moisture content height of hydrogen own, is exactly that the raw material water content is high in addition.
And the general granularity of raw material of producing super-fine cobalt powder is all very thin; Surface area is big; Surface adsorption is very capable; Deposit with transportation in the moisture content in the absorbed air and cause that water content is high very easily, vapour content raises in the reducing atmosphere thereby in reduction process, make, and is unfavorable for the granularity and the Control for Oxygen Content of cobalt powder.
Summary of the invention
The technical problem that the utility model will solve is that the raw material water content of existing production super-fine cobalt powder is high, in reduction process, makes vapour content rising in the reducing atmosphere, is unfavorable for the granularity and the Control for Oxygen Content of cobalt powder.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of push boat type two pipe reduction furnaces comprise boat, push away boat mechanism, go into Zhou Kou, boiler tube, zone of reduction, salband, air inlet and go out Zhou Kou; Above-mentioned boiler tube passes above-mentioned zone of reduction and above-mentioned salband; Above-mentioned air inlet is arranged on the body of above-mentioned boiler tube, also comprises dry zone, and dry zone is positioned at the above-mentioned boat mouth front end of going into; And dry zone open at both ends; Above-mentioned boat through behind the dry zone, is gone into the boat mouth and is got into above-mentioned boiler tube from above-mentioned under the above-mentioned promotion that pushes away boat mechanism, and goes out Zhou Kou through above-mentioned zone of reduction, above-mentioned salband and above-mentioned successively.
The utility model has increased by one section dry zone before the high temperate zone of original reduction furnace; Can play at raw material entering high temperature reduction and cross the moisture content in the Cheng Qian low temperature removal raw material; It is very low that the raw material moisture content that enters into the reducing zone is dropped to, thereby avoided influencing because of moisture content in the raw material problem of reduction effect.
For making the zone of reduction homogeneous heating, strengthen reduction effect, above-mentioned zone of reduction comprises reduction furnace and heating unit, said heating unit is positioned at the reduction body of heater, and coats above-mentioned boiler tube.Said heating unit adopts the resistance wire of prior art.
For making the dry zone homogeneous heating, strengthen drying effect, above-mentioned dry zone comprises drying oven and heating wire, said heating wire evenly is arranged in the dry body of heater.
For making things convenient for boat to get into zone of reduction, said to go into the boat mouth be fluted body.In the prior art, going into the boat mouth is hollow, and with push away boat mechanism and be connected perforation, the utility model is gone into the boat mouth and is pushed away boat mechanism and divide and be arranged, and occurs between zone of reduction and the dry zone interrupting, and passes through for making things convenient for boat, will go into Zhou Kou top De Ding and remove, and becomes fluted body.
The utility model has the advantages that: compare with original reduction furnace, obtained following good result through the reduction furnace that increases dry zone: raw material moisture content drops to below 0.2% before advancing reduction furnace; Because raw material moisture content reduces, the material reduction is more abundant, and oxygen content is lower; Because raw material moisture content reduces, the granularity of reduction is thinner.
Description of drawings
Fig. 1 is existing push boat type two pipe reduction furnace structured flowcharts.
Fig. 2 is the utility model structured flowchart.
Fig. 3 is the utility model structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1, existing push boat type two pipe reduction furnaces, zone of reduction 2 is connected with salband 3, does not do dried for advancing before the reduction furnace moisture content in the raw material.
Shown in Fig. 2-3; A kind of push boat type two pipe reduction furnaces comprise boat 5, push away boat mechanism 4, go into boat mouth 7, boiler tube 6, zone of reduction 2, salband 3, air inlet 9 and go out boat mouth 8 that above-mentioned boiler tube 6 passes above-mentioned zone of reduction 2 and above-mentioned salband 3; Above-mentioned air inlet 9 is arranged on the body of above-mentioned boiler tube 6; Also comprise dry zone 1, dry zone 1 is positioned at above-mentioned boat mouth 7 front ends of going into, and dry zone 1 open at both ends; Above-mentioned boat 5 through behind the dry zone 1, is gone into boat mouth 7 and is got into above-mentioned boiler tube 6 from above-mentioned under the above-mentioned promotion that pushes away boat mechanism 4, and goes out boat mouth 8 through above-mentioned zone of reduction 2, above-mentioned salband 3 and above-mentioned successively.Air inlet 9 feeds reducing gas, and said reducing gas is a hydrogen.Above-mentioned zone of reduction 2 comprises body of heater 2-1 and heating unit 2-2, and said heating unit 2-2 is positioned at body of heater 2-1, and coats above-mentioned boiler tube 6.Above-mentioned dry zone 1 comprises body of heater and heating wire, and said heating wire evenly is arranged in the body of heater.
Said dry zone 1 open at both ends; Help the diffusion of vapor evaporated; Go into boat mouth 7 and be not only the import that boat 5 gets into boiler tube 6, also comprise the effect of hydrogen unnecessary in the discharging zone of reduction 2 simultaneously, thereby guarantee the work of the body of heater 2-1 ability safety and stability of zone of reduction 2.
During work, raw material gets into high temperature reduction and crosses the moisture content in the Cheng Qian low temperature removal raw material, and it is very low that the raw material moisture content that enters into the reducing zone is dropped to, thereby avoided influencing because of moisture content in the raw material problem of reduction effect.
Claims (4)
1. a push boat type two is managed reduction furnaces; Comprise boat, push away boat mechanism, go into Zhou Kou, boiler tube, zone of reduction, salband, air inlet and go out Zhou Kou; Above-mentioned boiler tube passes above-mentioned zone of reduction and above-mentioned salband, and above-mentioned air inlet is arranged on the body of above-mentioned boiler tube, it is characterized in that:
Also comprise dry zone; Dry zone is positioned at the above-mentioned boat mouth front end of going into, and the dry zone open at both ends, above-mentioned boat under the above-mentioned promotion that pushes away boat mechanism through behind the dry zone; Go into the boat mouth and get into above-mentioned boiler tube from above-mentioned, and go out Zhou Kou through above-mentioned zone of reduction, above-mentioned salband and above-mentioned successively.
2. follow according to the described a kind of push boat type two pipe reduction furnaces of claim 1, it is characterized in that: above-mentioned zone of reduction comprises reduction furnace and heating unit, and said heating unit is positioned at the reduction body of heater, and coats above-mentioned boiler tube.
3. follow according to claim 1 or 2 described a kind of push boat type two pipe reduction furnaces, it is characterized in that: above-mentioned dry zone comprises drying oven and heating wire, and said heating wire evenly is arranged in the dry body of heater.
4. follow according to claim 1 or 2 described a kind of push boat type two pipe reduction furnaces, it is characterized in that: said to go into the boat mouth be fluted body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203038021U CN202254760U (en) | 2011-08-19 | 2011-08-19 | Push boat type double-tube reduction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203038021U CN202254760U (en) | 2011-08-19 | 2011-08-19 | Push boat type double-tube reduction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202254760U true CN202254760U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203038021U Expired - Lifetime CN202254760U (en) | 2011-08-19 | 2011-08-19 | Push boat type double-tube reduction furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN202254760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057655A (en) * | 2015-08-17 | 2015-11-18 | 湖南久泰冶金科技有限公司 | Deoxidizing and reducing technology for metal powder material |
-
2011
- 2011-08-19 CN CN2011203038021U patent/CN202254760U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057655A (en) * | 2015-08-17 | 2015-11-18 | 湖南久泰冶金科技有限公司 | Deoxidizing and reducing technology for metal powder material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 211100 Jiangsu city of Nanjing province Jiangning economic and Technological Development Zone, Jing Huai Street No. 115 Patentee after: Nanjing Hanrui Cobalt Co., Ltd. Address before: 211100, No. 115, Jing Huai street, Jiangning District, Jiangsu, Nanjing Patentee before: Nanjing Hanrui Cobalt Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |