CN2937153Y

CN2937153Y - Reduction tank

Info

Publication number: CN2937153Y
Application number: CN 200620075515
Authority: CN
Inventors: 梅小明
Original assignee: NANJING YUNHAI SPECIAL METALS CO Ltd
Current assignee: NANJING YUNHAI SPECIAL METALS CO Ltd
Priority date: 2006-08-04
Filing date: 2006-08-04
Publication date: 2007-08-22
Anticipated expiration: 2016-08-04

Abstract

The utility model relates to a reduction pot, which comprises a sealing cover plate (8), a reduction pot (2) which is a cylinder of wider upper part and narrower lower part, a cooling water chamber (4), an evacuation tube (6), a fire damper board (1), and a collector (5). The utility model can be used for metal thermal reduction vacuum chamber in the loading process of metals like magnesium, calcium, strontium, etc. The utility model has the advantages that the utility model helps control the loading and assembly clearance of the feed barrel in the reduction pot and prolong the actual effects of deformation; that the life cycle of the reduction pot can be increased by 50 to 100% so as to reduce the workload for the reshaping and maintenance of the inner barrel and to reduce the consumption of materials; and that the cone shaped reduction pot can facilitate the application of mechanized sediment removal so as to greatly improve the outcome of every single chamber and the labor productivity.

Description

A kind of reduction jar

Technical field

The utility model relates to a kind of reduction jar, specifically is a kind of reduction jar that is used for metal vacuum thermal reductions such as magnesium, calcium, strontium.

Background technology

At present, Pidgeon process vacuum-thermal reduction MAGNESIUM METAL, calcium, strontium etc. produce used reduction can body structure by spherical end at the bottom of, cylindrical shell, watercooling jacket form.At the bottom of the spherical end and the material of cylindrical shell be high temperature steel, the general heat-resisting alloy steel that contains Cr, Ni that uses in the production, as 3Cr24Ni7N, 40Cr28Ni16, the material of watercooling jacket is a general carbon steel, uses the Q235 steel more.Cylindrical shell centre spinning method production, many with sand mold casting production at the bottom of the spherical end, watercooling jacket is a rivet welding spare.During works better,, be straight barrel shape, easy deformation and breakage under the condition of high temperature (being generally about 1200 ℃) vacuum (being generally about 6Pa) no matter jar is laterally or vertically to place in the burner hearth in the body of heater.Straight tubular reduction retort is connected with watercooling jacket owing to one, one and base plate welding, stress is generally all concentrated the middle part of passing to the reduction jar under the condition of high-temperature vacuum, cave inward in the middle of causing retort, thereby cause retort cracking gas leakage and stop using, so the productive expense major part of Pidgeon process all consumes on retort.

The utility model content

Technical problem to be solved in the utility model is the stress concentration of reduction jar under the high-temperature vacuum condition in the middle of reduction jar, and the short problem in work-ing life that makes reduction jar provides a kind of tank body that reduces that the reduction jar of certain taper is arranged.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

The utility model comprises seal cover board, reduction tank body, watercooling jacket, vacuum-pumping tube, fire damper, collector, and its reduction tank body 2 is up big and down small cylindrical shells.

Also in reduction tank body 2, also be provided with barrel 3 in order to load and unload reasons such as material convenience.

According to mechanics principle and practical experience, reduction tank body 2 selection taperings are 3-11 ° cylindrical shell, and best tapering is 5-7 °.

Because of tank body has certain taper, the stressed bottom of progressively transferring to the reduction jar of reduction tank body arrives its bottom at last, and in order to keep its relative complete form, reduction tank body 2 bottom thickness are not less than 50MM.

The utility model is fit to the canned material productions of metallothermic reduction vacuum oven such as magnesium, calcium, strontium, helping reduction jar interior barrel charging fit-up gap control and distortion actual effect prolongs, general life cycle improves 50-100%, so that reduces interior bucket shaping maintenance load and reduce materials consumption.The reduction of taper simultaneously jar makes separate unit stove turnout and labour productivity significantly improve for the deslagging mechanized condition of providing convenience that comes into operation.

Description of drawings

Fig. 1 is the utility model structural representation

Fire damper 1, reduction tank body 2, barrel 3, watercooling jacket 4, collector 5, vacuum-pumping tube 6, entrance of cooling water pipe 7-1, cooling water outlet pipe 7-2, seal cover board 8

Embodiment

The utility model mainly is the principle according to the geometrical body mechanics, the pressure transfer that vacuum caused when retort was heated, promptly transfer to the less position of diameter from the bigger force part of diameter, and progressively transfer to the reduction tank body 2 the bottom, arrive its bottom at last, thereby, the bottom keeps its relative complete form because being thickeied to support, at most just bottoms are towards sunken inside, and this does not influence in the production process needed retort internal space or the gas leakage of local deformaton cracking and the reduction retort is stopped using.As mentioned above, the thickness of the bottom of reduction tank body 2 is not less than 50MM in the implementation process, and the bottom thickness of present embodiment is selected 50MM.The tapering of reduction tank body 2 of the present utility model can design according to concrete requirement, and adopting the tapering of reduction tank body 2 among the embodiment is 5 °.

Convenient in order to load and unload material, prolong the barrel deformation time, and be the deslagging mechanized condition of facilitating that comes into operation, the utility model also is provided with barrel 3 in the tank body 2 reducing.

Barrel 3 is placed on reduction tank body 2 bottoms, inwall with reduction tank body 2 leaves certain interval, barrel 3 tops keep at a certain distance away and place PLASTIC LAMINATED 1, PLASTIC LAMINATED 1 rides over the highlight of reduction tank body 2 middle and upper part inwalls, collector 5 is placed on the top that places on the PLASTIC LAMINATED 1 in the reduction tank body 2, watercooling jacket 4 is enclosed within outside reduction tank body 2 tops and fixes simultaneously, entrance of cooling water pipe 7-1 and cooling water outlet pipe 7-2 are connected on the watercooling jacket 4, in addition vacuum-pumping tube 6 is connected on reduction tank body 2 external wall of upper portion, 2 upper port places cover seal cover board 8 at the reduction tank body.

The following 1-10 step is carried out the concrete operations step for adopting the utility model:

1, watercooling jacket 4 is enclosed within reduction tank body 2 tops and fixes, and entrance of cooling water pipe 7-1 and cooling water outlet pipe 7-2 are connected on the watercooling jacket 4, in addition vacuum-pumping tube 6 is connected on reduction tank body 2 external wall of upper portion;

2, above-mentioned reduction tank body 2 is hung in the burner hearth;

3, will reduce the entrance of cooling water pipe 7-1 of the watercooling jacket 4 on the tank body 2 and be connected with hydrologic cycle cooling system with cooling water outlet pipe 7-2, simultaneously, that vacuum-pumping tube 6 and vacuum pump winding is logical;

4, will fill the barrel 3 of suppressing agglomerating material group hangs in the reduction tank body 2;

5, fire damper 1 and collector 5 are hung in reduction tank body middle and upper part and top successively, cover seal cover board 8 then;

6, firing up, and open the vacuum pump group makes in the reduction tank body to vacuumize, and opens hydrologic cycle cooling system simultaneously, make have in the watercooling jacket 4 cooling water circulation;

7, vacuum tightnesss, temperature and reduction cycle in the control reduction tank body 2, metal is replaced and is evaporated in the collector 5 that enters reduction tank body 2 tops, because that condensation forms the crystalloid metal is solid-state;

8, after the cycle to be restored arrived, cooling slowly stopped vacuum tightness, stops water coolant at last;

9, open seal cover board 8, hang out collector 5, the crystalloid metal stamping and pressing that condensation in the collector 5 is got off is packed;

10, take out fire damper 1, hang out barrel 3, the to be restored fresh material group of packing in barrel 3 again repeats 5 to 10 steps.

Claims

1, a kind of reduction jar comprises seal cover board, reduction tank body, watercooling jacket, vacuum-pumping tube, fire damper, collector, and it is characterized in that: reduction tank body (2) is up big and down small cylindrical shell.

2, a kind of reduction jar according to claim 1 is characterized in that: also be provided with barrel (3) in reduction tank body (2).

3, a kind of reduction jar according to claim 1 and 2, it is characterized in that: reduction tank body (2) is that tapering is 3-11 ° a cylindrical shell.

4, a kind of reduction jar according to claim 3, it is characterized in that: the tapering of reduction tank body (2) is preferably 5-7 °.

5, a kind of reduction jar according to claim 1 and 2 is characterized in that: reduction tank body (2) bottom thickness is not less than 50MM.