CN2515206Y

CN2515206Y - Double-pot type metal zirconium reduction device

Info

Publication number: CN2515206Y
Application number: CN 01272222
Authority: CN
Inventors: 王艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-15
Filing date: 2001-12-15
Publication date: 2002-10-09
Anticipated expiration: 2011-12-15

Abstract

Disclosed is a double-pot zirconium reduction device with controllable temperature, quick reaction speed, high yield and high equipment utilization rate, which comprises two resistance-heated furnaces, wherein one of the two furnaces is a reduction heating furnace, and the other furnace is a sublimation heating furnace. A crucible is placed in the reduction heating furnace, a temperature-measuring duct is fixed on the side wall of the crucible, and a volatilization barrel is placed in the sublimation heating furnace. A crucible cover board is installed on the top of the crucible, a volatilization barrel cover board is installed on the top of the volatilization barrel, and an air valve, a vacuum tube and a vapor nozzle whose top is provided with a needle valve are installed on the crucible cover board respectively. An air valve, a vacuum tube and a vapor nozzle whose top is provided with a needle valve are installed on the volatilization barrel cover board respectively, a middle duct is arranged between the vapor nozzle and the duct, heat tracing furnace wires are coiled on the middle duct, and a heat-insulating layer is covered on the duct wall of the middle duct.

Description

Double-pot type metal zirconium reducing apparatus

Technical field

Novel a kind of metallic reducing device, the particularly a kind of double-pot type metal zirconium reducing apparatus of relating to of this reality.

Background technology

Domestic manufacturer produces zirconium sponge at present, is using magnesium metal reduction ZrCl ₄, the equipment that is adopted in the operation is single jar.Be MAGNESIUM METAL, ZrCl ₄All (magnesium is last, ZrCl in same flue ₄Descending ZrCl at following or magnesium ₄₊Last), flue is contained in the resistance heading furnace, is divided into upper and lower two hot spotss.It is the magnesium reduction crucible that used reduction furnace specifically is configured to top, and the bottom is ZrCl ₄Distillation volatilization bucket, middle heat insulation by thermal baffle.During work, at first give ZrCl ₄Volatilization bucket heat temperature raising makes it the volatilization distillation and is ZrCl ₄Steam enters volatilization bucket and heating flue gap through sieve aperture, and rising is diffused into by the heat insulation plate hole of crucible and is heated in the melt metal magnesium crucible, with the liquid magnesium surface reduction reaction takes place, and emits big calorimetric, meanwhile gaseous metal magnesium and gaseous state ZrCl ₄Reaction in advance produces metallic Z r at a low price, regulates temperature and pressure in the flue by control heating power and time, finishes until reaction.

The subject matter that aforesaid device structure exists is:

1, Mg and ZrCl ₄Coexist in the flue, by same resistance heading furnace heat supply, temperature is wayward, normally the carrying out of adverse effect.

2, ZrCl ₄Steam is to permeate into the fused magnesium surface by diffusion, not only speed of response is slow, but also can produce two kinds of following adverse reactions: the one, in MAGNESIUM METAL heat-processed, unavoidably produce magnesium vapor, be dispersed in the liquid magnesium surface, with the ZrCl that is diffused into crucible ₄Vapor reaction produces chromium metal (not being the product of wanting) at a low price, intercepts ZrCl ₄With the normal reaction of liquid magnesium, reduce yield rate; The 2nd, because of ZrCl ₄With reactive magnesium be thermopositive reaction, in sidewall of crucible place reaction, elevate the temperature, and make that composition reacts again in metallic Z r and the crucible, produce another kind of alloy, the reduction yield rate.Because above-mentioned two kinds of detrimental impurity increase, and have increased the burden of time road distillation process, make time lengthening, energy consumption increases, and plant factor is low.

Summary of the invention

The purpose of this utility model is to solve the above-mentioned problem that prior art exists, and a kind of Controllable Temperature, speed of response is fast, yield rate is high, plant factor is high double-pot type metal zirconium reducing apparatus are provided.

The utility model is achieved in that it has two resistance heading furnaces, wherein one is the reduction process furnace, another is the distillation process furnace, in the reduction process furnace, be placed with crucible, be fixed with the thermometric conduit on the crucible wall, in the distillation process furnace, be placed with the volatilization bucket, at the crucible top crucible cover plate is installed, at volatilization bucket top the volatilization cover plate is installed, air valve is housed respectively on crucible cover plate, valve tube and top have the steam nozzle of needle type valve, on the volatilization cover plate, air valve is housed respectively, valve tube and top have the conduit of needle type valve, between steam nozzle and conduit, be connected with intermediate pipe, be wound with the hot stove silk of companion on the said intermediate pipe, and on the intermediate pipe tube wall, be coated with thermal insulation layer.

Double-pot type metal zirconium reducing apparatus according to above-mentioned is equipped with under meter, to record ZrCl on intermediate pipe ₄Flow.

According to above-mentioned double-pot type metal zirconium reducing apparatus, said intermediate pipe two ends are that pipe connects, and pipe connect with intermediate pipe between be connected by flange.

The utility model has the advantages that:

1, heats ZrCl respectively ₄And Mg, temperature is not disturbed mutually, makes temperature that controllability more be arranged.

2, the ZrCl of high density ₄Directly through the surface of intermediate pipe to magnesium, speed of response is faster for steam.

3, the ZrCl of Yin Ruing ₄Steam directly arrives the intermediate surface of Mg, away from the sidewall of crucible surface, has reduced the alloying of zirconium and sidewall of crucible material, has increased the rate of recovery.

4, owing to the temperature height of central section magnesium,, seldom near sidewall of crucible, take place so reduction reaction concentrates on the central section substantially.

5, because ZrCl ₄Fast with the Mg speed of response, so the product zirconium sponge is porous, removes Mg and MgCl when this helps vacuum distilling ₂

6, vacuum distilling time weak point, MgCl ₂Remove easily, so the plant factor height, the number of devices of per unit area yield zirconium is few, and the number of distilling furnace can be less than the number of reduction furnace.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

As shown in the figure, it has two resistance heading furnaces, wherein one is the reduction process furnace, another is the distillation process furnace, said reduction process furnace is by reduction heating furnace body 1, stove silk 2 and reduction flue 3 constitute, in reduction flue 3, be placed with crucible 4, be fixed with thermometric conduit 7 on crucible 4 sidewalls, said distillation process furnace is by distillation body of heater 22, stove silk 21 and distillation flue 20 constitute, in distillation flue 20, be placed with volatilization bucket 19, at crucible 4 tops crucible cover plate 26 is installed, volatilization cover plate 26 is installed, air valve 9 is housed respectively on crucible cover plate 23 at volatilization bucket 19 tops, valve tube 10 pipe tops have the ZrCl of needle type valve 11 ₄ Steam nozzle 8 is equipped with the ZrCl that air valve 16, valve tube 17 and top have needle type valve 15 respectively on volatilization cover plate 26 ₄ Steam nozzle 8 and ZrCl ₄Have a pipe to connect 14 on the conduit 15 respectively, be connected with intermediate pipe 14 by flange 25 between two pipes connect 14, meter 24 when stream is housed on intermediate pipe 14 is to record ZrCl ₄Flow, be wound with the hot stove silk 13 of companion on the said intermediate pipe 14, and on intermediate pipe 14 tube walls, be coated with the thermal insulation layer of making by rare earth heat-insulating material 12.

Working process is as follows: in crucible 4 bottoms dress MAGNESIUM METAL 6, adorn solid-state smart ZrCl in volatilization bucket 19 bottoms ₄18, with

cover plate

23,26 sealings, vacuumize by

valve tube

10,17 respectively, send argon gas for respectively distillation flue 20 and reduction flue 3 by

air valve

16 and 9 then, give the

stove silk

2,21 energisings again, heat, and the temperature of reduction furnace, subliming furnace and intermediate pipe 14 is controlled respectively, and by

air valve

16 and 9 degasification, and applying argon gas, after the scheduled time, open needle type valve 15 and 11, allow ZrCl ₄Steam almost by conduit 15, intermediate pipe 14, pass through ZrCl again ₄Steam almost nozzle 8 and be ejected into the magnesium center surface, produce zirconium sponge 5, again through the distillation operation, promptly.

Claims

1, a kind of double-pot type metal zirconium reducing apparatus, comprise two resistance heading furnaces, wherein one is the reduction process furnace, another is the distillation process furnace, it is characterized in that, in the reduction process furnace, be placed with crucible, be fixed with the thermometric conduit on the crucible wall, in the distillation process furnace, be placed with the volatilization bucket, at the crucible top crucible cover plate is installed, at volatilization bucket top the volatilization cover plate is installed, air valve is housed respectively on crucible cover plate, valve tube and top have the steam nozzle of needle type valve, on the volatilization cover plate air valve are housed respectively, valve tube and top have the conduit of needle type valve, are connected with intermediate pipe between steam nozzle and conduit, be wound with the hot stove silk of companion on the said intermediate pipe, and on the intermediate pipe tube wall, be coated with thermal insulation layer.

2, double-pot type metal zirconium reducing apparatus according to claim 1 is characterized in that, under meter is housed on intermediate pipe.

3, double-pot type metal zirconium reducing apparatus according to claim 1 and 2 is characterized in that, said intermediate pipe two ends are that pipe connects, and pipe connect with intermediate pipe between be connected by flange.