CN201195740Y - Stove special for extracting magnesium and molybdenum with vacuum-thermal reduction and thermal decomposition - Google Patents
Stove special for extracting magnesium and molybdenum with vacuum-thermal reduction and thermal decomposition Download PDFInfo
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- CN201195740Y CN201195740Y CNU2008200810418U CN200820081041U CN201195740Y CN 201195740 Y CN201195740 Y CN 201195740Y CN U2008200810418 U CNU2008200810418 U CN U2008200810418U CN 200820081041 U CN200820081041 U CN 200820081041U CN 201195740 Y CN201195740 Y CN 201195740Y
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Abstract
The utility model relates to a special furnace which extracts magnesium and molybdenum through vacuum thermal reduction and thermal decomposition, wherein a furnace arch gather exhaust chamber is installed on the top of a crucible melting chamber, the top and the lateral face of the furnace arch gather exhaust chamber are respectively connected with a vacuum feeder and a condenser through a pipeline which is provided with a double-safety valve and an exhaust pipe, the bottom of the crucible melting chamber is connected with a water cooling vacuum storage hopper, the lower portion of the water cooling vacuum storage hopper is connected with a discharge funnel through the pipeline which is provided with the double-safety valve, the bottom of the condenser is connected with a vacuum container through the pipeline which is provided with the double-safety valve, the vacuum feeder, the crucible melting chamber, the water cooling vacuum storage hopper, the discharge funnel and the vacuum container are connected with a Roots rotary vane vacuum group through the pipeline which is provided with a microvacuum butterfly valve or the double-safety valve, the condenser is connected with the Roots rotary vane vacuum group through an air exhaust pipe of a melting and condenser system and a vacuum filtration cooler, and a vacuum melting device is also applicable to the vacuum carbon thermal reduction technique of other non-ferrous metal oxides.
Description
Technical field
The utility model relates to a kind of vacuum melting equipment of mineral, and the special-purpose stove of magnesium and molybdenum is extracted in especially a kind of vacuum-thermal reduction and thermolysis.
Background technology
One, the production method of magnesium adopts Canadian Pidgeon process always at present, Pidgeon process claims the rhombspar silicothermic process again, according to its chemical equation and molar weight Theoretical Calculation as can be known: whenever produce one ton of magnesium and must consume 8 tons of raw materials, in fact most of magnesium factory needs just 1 ton of magnesium of outputs of 10 tons of raw materials.
Also there is following critical defect in Pidgeon process:
1, Pidgeon process is the outer wall to 1200 ℃ that directly burns reduction jar with coal gas or fuel oil, by the reduction jar heat is passed to furnace charge, therefore the reduction tank material is required too harsh, require high temperature resistant, anti-oxidant, high strength and the corrosion of high-temperature gas magnesium and liquid magnesium, indeformable under the taller temperature, do not ftracture, thermal conductive resin is arranged.The tank body material that China magnesium factory selects for use is expensive high chromium nickel stainless steel, but in fact any stainless material all can't satisfy above-mentioned harsh requirement, thus one of the heel of Achilles of Pidgeon process be reduction jar work-ing life short, consumptive material is high, cost is high.
2, because the stainless steel tank body maximum operation (service) temperature is 1200 ℃, and reduction temperature is not enough, and reduction rate is slow, and reduction ratio is very low, thus the high-recovery of magnesium only 75%, some producer's rate of recovery can only reach 60%, and the magnesium resource waste is big.
3, Pidgeon process is whenever produced 1 ton of magnesium and need be consumed 8～10 tons of raw materials, and wherein the consumption of ferrosilicon reductive agent is very big, costs an arm and a leg, cost is very high.
4, the quantum of output of magnesium only accounts for 10～12% of charging capacity, illustrates that most energy are to consume on waste residue, and energy consumption is greatly the another fatal shortcoming of Pidgeon process.
5, the oxytropism of magnesium is very high, in case tank body produces fine crack, very micro-air bleeds, gaseous state in jar and liquid magnesium be acutely burning immediately, not only can not get product magnesium, the accident of blasting unavoidably, consequence is hardly imaginable, and safety problem is the another shortcoming of production of magnesium by pidgeonprocess.
Two, the problem that exists in the conventional smelting apparatus of metallic sulfide:
Now with molybdenumdisulphide (MoS
2) the extraction molybdenum is example: ordinary method is at first with MoS
2Carry out oxidizing roasting, make sulfide become oxide compound (MoO
3), carry out conventional retailoring or wet method melting again.The problem that exists is the technical process complexity, and environmental pollution is serious, and facility investment is big, and at first oxidizing roasting can't be avoided SO
2Pollution, even set up acid making system, pollution is arranged too, just the pollution level difference.If SO
2Concentration does not reach the relieving haperacidity condition, is difficult to make sulfuric acid yet.There is the pollution of waste water and gas equally in the wet method melting.
The utility model content
At above deficiency, the utility model proposes the special-purpose stove that magnesium and molybdenum are extracted in a kind of vacuum-thermal reduction and thermolysis, the type of furnace is used for the vacuum carbothermal reduction aspect, can go out corresponding metal to the reduction with carbon of multiple high-melting-point nonferrous metal oxides.Heat under at vacuum condition, available carbon is reduced into MAGNESIUM METAL to magnesium oxide, and output byproduct CO is used for vacuum thermolysis aspect simultaneously, can decomposite corresponding metal to multiple refractory metal sulfide, simultaneously output byproduct sulphur.As MoS
2Under vacuum condition, heat, can directly decomposite metal molybdenum, simultaneously output byproduct sulphur.And for example: heat under vacuum condition in the mispickel ore deposit, can be directly from the mispickel ore deposit one step obtain metallic arsenic product etc.Why this type of furnace can be reduced to simple reduction or decomposition course to the complicated fusion process of multiple operation, its major reason is melting under vacuum condition, it is a lot of that the required temperature of chemical reaction is reduced, the also corresponding reduction of melting difficulty thereupon, not only solve environmental issue, also obtained valuable byproduct.This vacuum melting equipment is equally applicable to the vacuum carbothermal reduction technology of other nonferrous metal oxides.
The purpose of this utility model realizes in the following way:
The special-purpose stove of magnesium and molybdenum is extracted in a kind of vacuum-thermal reduction and thermolysis, comprise the vacuum charging device, the crucible working chamber, water-cooled vacuum storage hopper, furnace bottom hydraulic lifting discharge device, the discharge funnel, condenser, vacuum vessel, by intermediate frequency frequency conversion electric system, the intermediate frequency induction heating device that Electric heating capacitance apparatus and intermediate frequency inductor are formed, Roots's blade vacuum unit, Liftable type vacuum vessel travelling car, truck, intermediate frequency inductor is set in outside, crucible working chamber, it is characterized in that: the poly-exhaust chest of furnace roof is equipped with at the top in the crucible working chamber, the top of the poly-exhaust chest of furnace roof links to each other with condenser with the vacuum charging device with vapor pipe by the pipeline that is equiped with the double insurance valve respectively with the side, bottom, crucible working chamber is connected with water-cooled vacuum storage hopper, and water-cooled vacuum storage hopper bottom is connected with the discharge funnel by the pipeline that is equiped with the double insurance valve; The condenser bottom is connected with vacuum vessel by the pipeline that is equiped with the double insurance valve; Described vacuum charging device, crucible working chamber, water-cooled vacuum storage hopper, discharge funnel and vacuum vessel all link to each other with Roots's blade vacuum unit by the pipeline that high vacuum butterfly valve or double insurance valve are housed; Condenser is connected with Roots's blade vacuum unit with the vacuum filtration water cooler by a melting and condenser system extraction pipe.
Inside center position, described crucible working chamber is vertically installed with the poly-vapor pipe in center, poly-vapor pipe upper end, center communicates with the poly-exhaust chest of furnace roof, the lower end is connected with the piston rod of the furnace bottom hydraulic lifting discharge device that is positioned at water-cooled vacuum storage hopper, and the poly-vapor pipe in furnace bottom hydraulic lifting discharge device drive center descends together crucible working chamber and water-cooled vacuum storage hopper are connected.
Make with the material of magnetic conduction not, non-conductive, high temperature resistant, high strength, high-air-tightness described crucible working chamber.
The described vacuum furnace shell that is contained in outside, crucible working chamber is made with the material of non-conductive, high temperature resistant, high strength, high-air-tightness.
It is 100～150 millimeters thermal insulation material that slit between described crucible working chamber and the vacuum furnace shell is filled with thick.
Be equiped with 5～10 layers of condensation cover in the described condenser, be drilled with thousands of apertures on every layer of condensation cover, the lower end of condensation cover is provided with the phlegma conflux disk, and the pipeline of phlegma conflux disk through the double insurance valve is housed links to each other with vacuum vessel.
Described intermediate frequency frequency conversion electric system is connected with copper bar routinely with the Electric heating capacitance apparatus, and the Electric heating capacitance apparatus is connected with water-cooled cable routinely with intermediate frequency inductor, and intermediate frequency inductor tightly is enclosed within on the external cylindrical surface of vacuum furnace shell.
Be equiped with the pressure reduction automatic starting device of vacuum measuring device, vacuum warning device, temperature automatically controlled and temperature indicating device, Roots vaccum pump in the described intermediate frequency frequency conversion electric system.
Described two cover vacuum units are installed in the left and right sides of working chamber respectively, the unit in left side is successively by electromagnetism band venting vacuum valve, the high vacuum butterfly valve is connected with the vacuum dust-precipitator, and the vacuum dust-precipitator is in parallel with the vacuum charging device that has the double insurance valve, water-cooled vacuum storage hopper and discharge funnel respectively by the vacuum main pipe line again; The vacuum unit on right side links to each other with vacuum filter by electromagnetism band venting vacuum valve, high vacuum butterfly valve successively, and vacuum filter is in parallel by melting and condenser system extraction pipe and condenser and vacuum vessel again.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Each parts label is as follows among the figure: feeder sealing cover 1, vacuum charging device 2, high vacuum butterfly valve 3a, 3b, 3c, 3d, 3e, double insurance valve 4a, 4b, 4c, vapor pipe 5, furnace roof gathers exhaust chest 6, vacuum main pipe line 7, vapor pipe 8, automatic temp controller 9 are gathered in the center, intermediate frequency frequency conversion electric system 10, Electric heating capacitance apparatus 11, intermediate frequency inductor 12, thermal insulation material 13, crucible working chamber 14, vacuum furnace shell 15, water-cooled vacuum storage hopper 16, furnace bottom hydraulic lifting discharge device 17, hydraulic efficiency plant 18, discharge funnel 19, vacuum dust-precipitator 20, electromagnetism band venting vacuum valve 21a, 21b, Roots's blade vacuum unit 22a, 22b, vacuum filtration water cooler 23, vacuum vessel travelling car 24, vacuum vessel 25, phlegma conflux disk 26, multilayer condensation cover 27, melting and condenser system extraction pipe 28, condenser 29, truck 30, discharge sealing cover 31.
Embodiment
But the utility model is by the vacuum melting device of forming a continuity scale operation with upper-part, vacuum charging, vacuum deslagging, vacuum discharge have been realized, be used to collect used vacuum vessels such as product and byproduct, when changing these vacuum vessels, all realized the evacuation operation, make whole smelting system in the process of long-term continuous smelting, guarantee high vacuum state all the time.
The vacuum furnace shell 15 of working chamber is to make with the material of magnetic conduction not, non-conductive, high temperature resistant, high strength, high-air-tightness; The thermal insulation material 13 of working chamber is to make with the special good material of heat-insulating property, and crucible working chamber 14 adopts the material of high-density, high conduction performance, high temperature resistant, refractory metal gas and liquid corrosion to make.Poly-vapor pipe 8 in the center of working chamber and the poly-exhaust chest 6 of furnace roof can enter condenser 29 through vapor pipe 5 rapidly with the gas of chemical reaction output, and rapidly the gaseous state thing are condensed into liquid object, and flowing to vacuum vessel 25 at last becomes solid product.
Water-cooled vacuum storage hopper 16 is water-cooled vacuum vessels, is provided with furnace bottom hydraulic lifting discharge device 17 and hydraulic efficiency plant 18 in it, and the bottom is provided with discharge double insurance valve 4b and high vacuum butterfly valve 3b.Water-cooled vacuum storage hopper can make the high-temperature material that enters wherein cool off within it, prevents to see when material from entering atmosphere air combustion.
Water-cooled vacuum storage hopper 16 bottoms are connected with discharge funnel 19 by the pipeline that is equiped with double insurance valve 4b, are connected with vacuum main pipe line 7 by a vacuum exhaust pipe that is equiped with high vacuum butterfly valve 3b in the centre of two valve adapting pipes of double insurance valve 4b.When discharge, atmosphere does not guarantee that smelting system is in high vacuum state in the discharge process in can not bleeding smelting system from double valve.
Be provided with 5～10 layers of condensation cover 27 in the water cooled housing of condenser 29, be drilled with thousands of apertures on every layer of condensation cover.The lower end of condensation cover is provided with phlegma conflux disk 26, and phlegma enters vacuum vessel 25 with the conflux disk double valve 4c that flows through.
Be provided with the vacuum exhaust pipe of band high vacuum butterfly valve 3a, 3b, 3c at the place, center of two double insurance valve pipe connectings of double insurance valve 4a, 4b, 4c, this structure makes from vacuum charging device 2 when reinforced or when changing vacuum vessel 25, and atmosphere can not bleed in crucible working chamber 14 or the condenser 29 through the double insurance valve.
Two cover vacuum units 22, be installed in the left and right sides of smelting system respectively, the unit in left side is by electromagnetism band venting vacuum valve 21b, high vacuum butterfly valve 3d, vacuum dust-precipitator 20 is in parallel with double insurance valve, vacuum charging device 2, water-cooled vacuum storage hopper 16, discharge funnel 19 respectively by vacuum main pipe line 7 again; The vacuum unit 22a on right side, respectively by electromagnetism band venting vacuum valve 21a, high vacuum butterfly valve 3e, vacuum filter 23 is in parallel with melting and condensing works by melting and condenser system extraction pipe 28 again.No matter two parallel installations of vacuum unit add the discharge process or change the vacuum vessel process, can both guarantee that whole smelting system is in high vacuum state all the time.
Operation steps is as follows:
1, raw material is gone into the preparation work of stokehold: powdery is raw coal also, the powdery catalyst, and the three mixes to scale, adds after small amount of binder stirs again, and is pressed into mini-pellets, and pelletizing can be put into vacuum charging device 2 after vacuum sintering.
2, start two cover vacuum unit 22a and 22b, the total system cold conditions is vacuumized, make vacuum tightness reach 1～5%.
3, start the heating system of forming by intermediate frequency electric system 10, Electric heating capacitance apparatus 11, intermediate frequency inductor 12, and power is transferred to prescribed value.
4, vacuum charging device 2 is vacuumized: at first close high vacuum butterfly valve 3a and double valve 4a, open feeder sealing cover 1, pelletizing is put into vacuum charging device 2, till filling, build the feeder sealing cover then, open high vacuum butterfly valve 3a, vacuum charging device 2 is vacuumized.
5, discharge the material or the waste residue of a last stove in the crucible working chamber 14: handle furnace bottom hydraulic lifting discharge device 17 and hydraulic efficiency plant 18, furnace bottom is descended, material or waste residue are entered water-cooled vacuum storage hopper 16 from crucible working chamber 14, so that its rapid cooling.
6, raw material is gone into stove: close high vacuum butterfly valve 3a, open reinforced double valve 4a, make the pelletizing in the vacuum charging device 2 fall into crucible working chamber 14, melting promptly begins.
7, row's material or waste residue: the discharge double insurance valve 4b that opens water-cooled vacuum storage hopper bottom, after the waste residue in the water-cooled vacuum storage hopper 16 all enters discharge funnel 19, close double insurance valve 4b and high vacuum butterfly valve 3b immediately, open discharge sealing cover 31 again, material or waste residue are all entered in the truck 30, close deslagging double insurance valve 4b immediately after having arranged material or waste residue, open valve high vacuum butterfly valve 3b, make the deslagging funnel recover vacuum state immediately.
8, the condensation of product and collection: along with the carrying out of chemical reaction in the crucible working chamber 14, continuous output magnesium vapor and CO, Mg steam and CO enter the poly-exhaust chest 6 of furnace roof rapidly by the poly-vapor pipe 8 in center, enter condenser 29 by vapor pipe 5 again.The Mg steam is condensed into liquid magnesium by multilayer bell-jar condensation cover 27 in condenser 29.Liquid Mg splashes into phlegma conflux disk 26, flows into vacuum vessel 25 through double insurance valve 4c, and becomes solid-state Mg by liquid Mg gradually.CO then by after condenser 29, melting and condenser system extraction pipe 28, vacuum filter 23 coolings, enters vacuum unit 22a, enters the CO collector in order to utilizing by vacuum unit 22a again.
9, change vacuum vessel 25: after solid-state Mg fills vacuum vessel 25, close top double insurance valve 4c, open high vacuum butterfly valve 3c simultaneously, screw off the bolt on vacuum vessel 25 flanges, handle the lifting device on the vacuum vessel travelling car 24, vacuum vessel is descended and displacement after, hang away the vacuum vessel 25 of filling product Mg, it is in place to change empty vacuum vessel 25 again, and last bolt gets final product.Owing to close double valve 4c in the process of replacing vacuum vessel, opened high vacuum butterfly valve 3c simultaneously, the center of the pipe connecting of two double insurance valves vacuumizes, therefore when changing vacuum vessel, though one of them valve contact atmosphere, unavoidable atmosphere can drain in the middle of two valves, is just in time taking out vacuum at this, wherein the gas of bleeding can not bleed again and go in the vacuum system of another valve end, has guaranteed the high vacuum state of smelting system.
10, the work characteristics of vacuum unit: two vacuum unit 22a and 22b, respectively by vacuum main pipe line 7 and melting and condenser system extraction pipe 28, be installed in the both sides of smelting system, two vacuum units are being worked all the time for a long time continuously.If vacuum unit or somewhere sealing member are out of joint, when vacuum tightness did not reach specified requirement, the vacuum auto-alarm was just reported to the police immediately automatically, and cut off the electricity supply automatically simultaneously, automatically close electromagnetism band venting vacuum valve 21a and 21b, make in the system of outage back still keeping original vacuum state.After treating that the intrasystem temperature of melting drops to safety temperature, no matter therefore handling failure any unexpected fault occurs again, can not cause security incident.
When being material vacuum carbothermic method extracting metals magnesium with magnesium oxide, chemical equation is as follows:
MgO ÷ 0.8 ÷ 0.95+1.5C+0.1CaF
2=Mg+CO+0.1CaF
2, press nucleidic mass and calculate:
MgO grade MgO rate of recovery excess coefficient scale-up factor
40.30÷0.8÷0.95+1.5×12+0.1×59.08＝24.31+28
77＝24.31+28
The left side of reaction formula is for participating in the total amount of reactant feed, and the right of reaction formula is the amount of useful resultant.
77：24.31：28＝3.17:1:1.15
The proportion expression that calculates according to molar weight illustrates, but 1 ton of magnesium of 3.17 tons of raw material outputs, simultaneously and the byproduct of 1.15 tons of CO of output.1.15 ton CO is a very considerable energy income.And 8～10 tons of raw materials of Pidgeon process, one ton of magnesium of output, but also do not have the byproduct of CO, as seen the profit margin great disparity of the two is very big.
The melting under vacuum condition of any metal, the required temperature of reduction chemical reaction that all can be in various degree, thereby reduction melting difficulty that also just can be in various degree can solve environmental issue again simultaneously.
It is as follows that the metal molybdenum chemical equation is extracted in the thermolysis of molybdenumdisulphide vacuum:
MoS
2＝Mo+S
2
159.94:95.94:64＝1.67:1:0.67
Proportion expression explanation according to molar weight calculates can a step obtain the refractory metal molybdenum powder with the thermolysis of concentrated molybdenum ore vacuum, simultaneously output byproduct sulphur.MoS
2Vacuum thermolysis melting, not only simplified smelting procedure greatly and greatly reduced smelting cost, the more important thing is from basic one and eliminated SO
2The condition that produces has promptly fundamentally solved environmental issue.
Claims (9)
1. the special-purpose stove of magnesium and molybdenum is extracted in vacuum-thermal reduction and thermolysis, comprise vacuum charging device (2), crucible working chamber (14), water-cooled vacuum storage hopper (16), furnace bottom hydraulic lifting discharge device (17), discharge funnel (19), condenser (29), vacuum vessel (25), by intermediate frequency frequency conversion electric system (10), the intermediate frequency induction heating device that Electric heating capacitance apparatus (11) and intermediate frequency inductor (12) are formed, Roots's blade vacuum unit, Liftable type vacuum vessel travelling car (24), truck (30), intermediate frequency inductor (12) is set in outside, plumbago crucible working chamber (14), it is characterized in that: the poly-exhaust chest (6) of furnace roof is equipped with at the top in crucible working chamber (14), the top that furnace roof gathers exhaust chest (6) links to each other with condenser (29) with vacuum charging device (2) with vapor pipe (5) by the pipeline that is equiped with double insurance valve (4a) respectively with the side, bottom, crucible working chamber (14) is connected with water-cooled vacuum storage hopper (16), and water-cooled vacuum storage hopper (16) bottom is connected with discharge funnel (19) by the pipeline that is equiped with double insurance valve (4b); Condenser (29) bottom is connected with vacuum vessel (25) by the pipeline that is equiped with double insurance valve (4c); Described vacuum charging device (2), crucible working chamber (14), water-cooled vacuum storage hopper (16), discharge funnel (19) and vacuum vessel (25) all link to each other with Roots's blade vacuum unit by the pipeline that high vacuum butterfly valve (3) or double insurance valve (4) are housed; Condenser (29) is connected with Roots's blade vacuum unit with vacuum filtration water cooler (23) by a melting and condenser system extraction pipe (28).
2. the special-purpose stove of magnesium and molybdenum is extracted in vacuum-thermal reduction as claimed in claim 1 and thermolysis, it is characterized in that: inside center position, crucible working chamber (14) is vertically installed with the poly-vapor pipe (8) in center, the center is gathered vapor pipe (8) upper end and is communicated with the poly-exhaust chest (6) of furnace roof, the lower end is connected with the piston rod of the furnace bottom hydraulic lifting discharge device (17) that is positioned at water-cooled vacuum storage hopper (16), and the poly-vapor pipe (8) in furnace bottom hydraulic lifting discharge device (17) drive center descends together crucible working chamber (14) and water-cooled vacuum storage hopper (16) are connected.
3. the special-purpose stove of magnesium and molybdenum is extracted in vacuum-thermal reduction as claimed in claim 1 and thermolysis, it is characterized in that: make with the material of magnetic conduction not, non-conductive, high temperature resistant, high strength, high-air-tightness crucible working chamber (14).
4. as the special-purpose stove of claim 1 or 3 described vacuum-thermal reductions and thermolysis extraction magnesium and molybdenum, it is characterized in that: be contained in the outside vacuum furnace shell (15) in crucible working chamber (14) and make with the material of non-conductive, high temperature resistant, high strength, high-air-tightness.
5. the special-purpose stove of magnesium and molybdenum is extracted in vacuum-thermal reduction as claimed in claim 1 and thermolysis, and it is characterized in that: the slit between crucible working chamber (14) and the vacuum furnace shell (15) is filled with thick 100～150 millimeters thermal insulation material (13).
6. the special-purpose stove of magnesium and molybdenum is extracted in vacuum-thermal reduction as claimed in claim 1 and thermolysis, it is characterized in that: be equiped with 5～10 layers of condensation cover (27) in the condenser (29), be drilled with thousands of apertures on every layer of condensation cover, the lower end of condensation cover is provided with phlegma conflux disk (26), and the pipeline of phlegma conflux disk through double insurance valve (4c) is housed links to each other with vacuum vessel (25).
7. the special-purpose stove of magnesium and molybdenum is extracted in vacuum-thermal reduction as claimed in claim 1 and thermolysis, it is characterized in that: intermediate frequency frequency conversion electric system (10) is connected with copper bar routinely with Electric heating capacitance apparatus (11), Electric heating capacitance apparatus (11) is connected with water-cooled cable routinely with intermediate frequency inductor (12), and intermediate frequency inductor (12) tightly is enclosed within on the external cylindrical surface of vacuum furnace shell (15).
8. the special-purpose stove of magnesium and molybdenum is extracted in vacuum-thermal reduction as claimed in claim 1 and thermolysis, it is characterized in that: the pressure reduction automatic starting device that is equiped with vacuum measuring device, vacuum warning device, temperature automatically controlled and temperature indicating device, Roots vaccum pump in the intermediate frequency frequency conversion electric system (10).
9. the special-purpose stove of magnesium and molybdenum is extracted in vacuum-thermal reduction as claimed in claim 1 and thermolysis, it is characterized in that: two cover vacuum units (22) are installed in the left and right sides of working chamber respectively, the unit (22b) in left side is successively by electromagnetism band venting vacuum valve (21b), high vacuum butterfly valve (3d) is connected with vacuum dust-precipitator (20), and vacuum dust-precipitator (20) is in parallel with the vacuum charging device (2) that has the double insurance valve, water-cooled vacuum storage hopper (16) and discharge funnel (19) respectively by vacuum main pipe line (7) again; The vacuum unit (22a) on right side links to each other with vacuum filter (23) by electromagnetism band venting vacuum valve (21), high vacuum butterfly valve (3) successively, and vacuum filter (23) is in parallel with condenser (29) and vacuum vessel (25) by melting and condenser system extraction pipe (28) again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200810418U CN201195740Y (en) | 2008-04-07 | 2008-04-07 | Stove special for extracting magnesium and molybdenum with vacuum-thermal reduction and thermal decomposition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200810418U CN201195740Y (en) | 2008-04-07 | 2008-04-07 | Stove special for extracting magnesium and molybdenum with vacuum-thermal reduction and thermal decomposition |
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| CN201195740Y true CN201195740Y (en) | 2009-02-18 |
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| CN101782325A (en) * | 2010-03-08 | 2010-07-21 | 南通汉瑞实业有限公司 | Vacuum intermediate frequency induction furnace |
| CN102214491A (en) * | 2010-04-07 | 2011-10-12 | 通用电气-日立核能美国有限责任公司 | Column geometry to maximize elution efficiencies for molybdenum-99 |
| CN102312109A (en) * | 2011-09-16 | 2012-01-11 | 重庆大学 | Technology for extracting and separating nickel and molybdenum from bone coal ore by vacuum carbothermal reduction |
| CN103205583A (en) * | 2013-05-06 | 2013-07-17 | 重庆大学 | Method for preparing magnesium through carbon thermal reduction |
| CN103925791A (en) * | 2014-04-16 | 2014-07-16 | 嵩县开拓者钼业有限公司 | Vacuum heating furnace |
| CN104894396A (en) * | 2015-06-17 | 2015-09-09 | 山西八达镁业有限公司 | Damage alarm detecting method for reduction pots for magnesium metal smelting |
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| CN101782325A (en) * | 2010-03-08 | 2010-07-21 | 南通汉瑞实业有限公司 | Vacuum intermediate frequency induction furnace |
| CN102214491A (en) * | 2010-04-07 | 2011-10-12 | 通用电气-日立核能美国有限责任公司 | Column geometry to maximize elution efficiencies for molybdenum-99 |
| US9240253B2 (en) | 2010-04-07 | 2016-01-19 | Ge-Hitachi Nuclear Energy Americas Llc | Column geometry to maximize elution efficiencies for molybdenum-99 |
| CN102312109B (en) * | 2011-09-16 | 2014-07-30 | 重庆大学 | Technology for extracting and separating nickel and molybdenum from bone coal ore by vacuum carbothermal reduction |
| CN102312109A (en) * | 2011-09-16 | 2012-01-11 | 重庆大学 | Technology for extracting and separating nickel and molybdenum from bone coal ore by vacuum carbothermal reduction |
| CN103205583A (en) * | 2013-05-06 | 2013-07-17 | 重庆大学 | Method for preparing magnesium through carbon thermal reduction |
| CN103205583B (en) * | 2013-05-06 | 2014-06-18 | 重庆大学 | Method for preparing magnesium through carbon thermal reduction |
| CN103925791A (en) * | 2014-04-16 | 2014-07-16 | 嵩县开拓者钼业有限公司 | Vacuum heating furnace |
| CN103925791B (en) * | 2014-04-16 | 2015-09-02 | 嵩县开拓者钼业有限公司 | A kind of vacuum furnace |
| CN104894396A (en) * | 2015-06-17 | 2015-09-09 | 山西八达镁业有限公司 | Damage alarm detecting method for reduction pots for magnesium metal smelting |
| CN105018730A (en) * | 2015-07-28 | 2015-11-04 | 山西大学 | Electro-magnetic induction internal thermal type metallic magnesium vacuum reduction furnace |
| CN105018730B (en) * | 2015-07-28 | 2017-03-08 | 山西大学 | Electromagnetic induction internal heat type magnesium metal vacuum reduction stove |
| CN111097920A (en) * | 2020-01-03 | 2020-05-05 | 四川万邦胜辉新能源科技有限公司 | Method for producing magnesium-lithium alloy by gaseous co-condensation method |
| CN111304467A (en) * | 2020-04-02 | 2020-06-19 | 湘西自治州丰达合金科技有限公司 | Device for preparing dehydroelectrolytic manganese |
| CN113883892A (en) * | 2020-07-02 | 2022-01-04 | 罗文洲 | Multifunctional electromagnetic vacuum melting system |
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