CN107012486A - Large-scale rare earth molten salt electrolytic goes out metal equipment - Google Patents
Large-scale rare earth molten salt electrolytic goes out metal equipment Download PDFInfo
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- CN107012486A CN107012486A CN201710188264.8A CN201710188264A CN107012486A CN 107012486 A CN107012486 A CN 107012486A CN 201710188264 A CN201710188264 A CN 201710188264A CN 107012486 A CN107012486 A CN 107012486A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/005—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells of cells for the electrolysis of melts
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/34—Electrolytic production, recovery or refining of metals by electrolysis of melts of metals not provided for in groups C25C3/02 - C25C3/32
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Abstract
Go out metal equipment, including vacuum plant, inert gas tank, ingot casting device and mobile lifting platform the invention discloses a kind of large-scale rare earth molten salt electrolytic;Vacuum plant is used to provide subnormal ambient to ingot casting room, and it includes vavuum pump, vacuum tank, and vavuum pump is connected by pipeline with vacuum tank;Ingot casting device includes ingot casting room, ingot mould, suction pipe, and ingot mould is placed in ingot casting room, and ingot casting room is closed structure, and suction pipe is connected with ingot casting room using metal sealing, and ingot casting device is placed on mobile lifting platform;Vacuum tank and inert gas tank are connected by pipeline with ingot casting room respectively.The present invention ensure that large-scale rare earth electrolysis cell goes out metal process smoothly, and uniform in quality is stable, purity is high, it is adaptable to large-scale rare earth electrolysis cell commercial Application.
Description
Technical field
The present invention relates to a kind of rare earth metallurgy technology, specifically, it is related to a kind of large-scale rare earth molten salt electrolytic and goes out metal dress
It is standby.
Background technology
The electrolysis of light rare earth metal is mainly fused salt electrolysis process, and rare earth molten-salt electrolysis method is make melting at high temperature dilute
Earth compounds are by direct current, the method for making its electroreduction to produce rare earth metal.Rare earth electrolysis cell is main by electrolyte, electricity
Pole, receiver, electrolytic cell are lined with and outside insulation and structural material composition.Negative electrode and receiver are by refractory metals such as tungsten, molybdenums
It is made.In electrolytic process, electric current flows to negative electrode from anode by electrolyte.Metal ion in electrolyte obtains electricity in negative electrode
The anion that son becomes in metal, electrolyte loses electronics in anode and becomes non-metal simple-substance or compound.Rare earth molten-salt electrolysis
Method is divided into Chlorides molten salts electrolysis of chloride method and fluoride smelt salt oxide electrolysis method.Due to chloride system electricity
Solution rare earth metal has that the easy moisture absorption of raw material, rare-earth yield are low, power consumption is high, tail gas pollution, 2010《National work letter
The relevant bulletin (2010 No. 122) that eliminates the backward production facilities in portion》Part industrial trade eliminates backward production technology equipment and product refers to
Catalogue is led to determine to eliminate rare earth-iron-boron electrolytic preparation rare earth metal technique.
China prepares rare earth metal using fluoride system electrolysis rare earth oxide and alloy starts from the seventies in last century, main
To be studied with Baotou tombar thite institute, Beijing Non-Ferrous Metal Research General Academy and Changchun applied chemistry study institute, Ganzhou nonferrous metallurgy
Based on the scientific research institutions such as institute, Hunan Research Institute of Rare Earth Metal Materials.1984, Baotou tombar thite institute solved electrolytic cell earliest
The problems such as material and trench structure, fluoride system 3000A neodymium metals industrial cell and production technology are developed, is realized
Lanthanum, cerium, neodymium, the large-scale production of norium, after the whole nation promote and greatly developed.Baotou rare earth is ground within 2000
Study carefully institute and complete the development that electrolytic cell is trained in Wan An, carry out the exploitation of 25kA fluoric-salt system electrolytic metal neodymium technological equipments again thereafter,
And Wan An groove Construction of Industrialization was completed in 2002.
As rare earth molten-salt electrolysis industrialization technology constantly improves, many technologies have evolved to very high level, but dilute
The native electrolytic process technology of coming out of the stove continues up former technology, including is manually scooped out and clamped with stainless steel crucible with niobium (titanium) spoon etc.
Press from both sides out;Two kinds of the above comes out of the stove mode in the presence of come out of the stove time length, cell body thermal loss are more, working of a furnace fluctuation is big, labor strength
Greatly, radiations heat energy is big, severe operational environment the shortcomings of, cause that electrolysis is discontinuous, production cost is higher, product quality stability
Difference;Large-scale rare earth electrolysis cell particularly more than myriampere degree, these shortcomings are especially prominent.
Foreign countries, come out of the stove in addition to mode except foregoing two kinds, the SheddES and GoldsmithJR in the U.S., respectively in 20th century 60
Age, the seventies have carried out the laboratory test research of outflow and boron nitride siphon pipe siphon after pre-buried molybdenum fairlead electrical heating.
Although these achievements in research achieve the important breakthrough and rapid progress of electrolysis serialization.But, due to there is its siphon pipe
Complex manufacturing technology, cost are higher, easily occur the suddenly cold and hot that metal blocks pipeline or suction pipe, or even needed when coming out of the stove in sealing
In system, under argon gas guard mode, the harsh conditions such as the rare earth metal of low melting point.This two kinds modes of coming out of the stove are difficult in actual production
To be promoted and apply, the actual production less suitable for the Rare Earth Electrolysis that maximized under the open system of China.
Domestic technology of being come out of the stove to rare earth metal also has research, and patent No. 201310352311.X discloses a kind of high-temperature molten salt
Electrolytic cell goes out metal device and method, but this method carries vacuum liquid storage bag, it is necessary to second casting is into ingot mould, adds
The complexity of operation, in addition, heater is added, it is complicated, be not suitable for industrial applications.The patent No. 01209185.5 is public
The siphon tapped device of Preparation through Fluoride System in Fused-salt Electrolysis groove is opened, the patent No. 200520127615.7 also discloses that a kind of electrolytic cell rainbow
Rare earth metal device is suctioned out, motor platform is excessively heavy but disclosed device is come out of the stove, inconvenient operation, and two other patent is all
Operating procedure or method are not referred to.The patent No. 20102063885.1 discloses 4000-6000A rare earth electrolysis cell dedicated full-automatics
Go out metal device, but still need to be electrically heated casting room tundish, it is complicated, and be only applicable and 4000-
6000A, it is inapplicable for Wan An electrolytic cell.
The content of the invention
Technical problem solved by the invention is to provide a kind of large-scale rare earth molten salt electrolytic and goes out metal equipment, ensure that
Large-scale rare earth electrolysis cell goes out metal process smoothly, and uniform in quality is stable, purity is high, it is adaptable to large-scale rare earth electrolysis cell industry
Using.
Technical scheme is as follows:
A kind of large-scale rare earth molten salt electrolytic goes out metal equipment, including vacuum plant, inert gas tank, ingot casting device and shifting
Dynamic hoistable platform;Vacuum plant is used to provide subnormal ambient to ingot casting room, and it includes vavuum pump, vacuum tank, and vavuum pump passes through pipe
Road is connected with vacuum tank;Ingot casting device includes ingot casting room, ingot mould, suction pipe, and ingot mould is placed in ingot casting room, and ingot casting room is closed
Structure, suction pipe is connected with ingot casting room using metal sealing, and ingot casting device is placed on mobile lifting platform;Vacuum tank and indifferent gas
Body tank is connected by pipeline with ingot casting room respectively.
Further:The shape of ingot casting room selects hollow cuboid, square or spherical.
Further:Ingot casting room top is provided with watch window.
Further:Mobile lifting platform includes moving cart, lifting support, supporting table;It is small that lifting support is fixed on movement
The top of car, supporting table is fixed at the top of lifting support, and moving cart bottom is provided with roller.
Further:The ingot shape of ingot mould selects cuboid, square, prism, terrace with edge, cylinder, pyramid, spherical or hemisphere
Shape, single ingot weight is between 1kg-100kg.
Compared with prior art, the technology of the present invention effect includes:
1st, it ensure that out metal process smoothly, uniform in quality is stable, purity is high, it is adaptable to large-scale rare earth electrolysis cell
Commercial Application.
The present invention realizes out metal device miniaturization, lightweight, goes out metal process mechanization, industrialization, can be quick
Realize that metal is come out of the stove;Go out metal process and do not need external heat, it is simple to operate, the time of coming out of the stove is shortened, furnace temperature fluctuation is reduced,
Labor strength is alleviated, the stability of product is improved, product is mingled with less, purity high, large-scale in 10kA scales and the above
Had a extensive future in the production of rare earth electrolysis cell.
2nd, suction pipe and ingot casting room metal sealing interconnection technique.Need to be tightly connected between suction pipe and ingot casting room to ensure ingot casting
House vacuum degree, it is ensured that inhale casting process smooth.
3rd, reduce product using unidirectional pouring type to be mingled with, product purity is high, uniform in quality is stable.Inhale and cast
Journey only inhales ingot metal and does not inhale casting electrolyte.
4th, remarkable in economical benefits.
Project autonomous innovation have developed out metal system and develop out smithcraft, and commercial Application shows:Come out of the stove the time
10-60s, 30 DEG C of furnace temperature fluctuation < after coming out of the stove increase yield more than 2%, and yield improves more than 0.3%, product qualification rate
100%, uniform in quality is stable, and purity is high.
Calculated with producing 2.2 ten thousand tons of rare earth (praseodymium neodymium) metals per year, 440 tons of yield can be increased, according to 330,000 yuan/ton of metal prices
Calculate, 145,200,000 yuan of new output value, production metal profit increases tax revenue newly according to 10,000 yuan/ton of calculating, 4,400,000 yuan of the new profit
1120000 yuan.In addition, application study achievement can reduce the mechanical loss of electrolyte, metal yield improves 0.3%, can save original
Expect 3kg/ tons of metals, whole year accumulative 66 tons of raw material of saving calculates according to 260,000 yuan/ton of oxides, saves cost of material 17,160,000
Member, remarkable in economical benefits.By the project implementation, time of coming out of the stove more traditional shortening 50-75% that comes out of the stove adds effective electrolysis
Time, tapping temperature fluctuation range is reduced, the working of a furnace is more stablized, while product quality, uniformity can be greatly improved.Project is pushed away
After wide, it is contemplated that increase yield 2%, yield 0.3% is improved, is calculated according to every 1000 tons of praseodymium neodymium alloys are produced, yield 20 can be increased
Ton, 8,000,000 yuan of new output value, by improving 1,200,000 yuan of the metal yield new profit, remarkable in economical benefits.
Project achievement in research promote on the one hand can change that Traditional Man scoops out go out metal mode, Rare Earth Electrolysis is come out of the stove reality
Existing mechanization, reduces labor intensity, shortens the time of coming out of the stove, and the working of a furnace is more stablized, and improves product quality and uniformity;Separately
On the one hand it can be northern rare earth transition and upgrade, the support of energy-saving offer important technology, be prepared by northern rare earth molten-salt electrolysis
Rare earth metal technique global optimization is had important practical significance and economic value, and China's Rare-earth Industry is had a far reaching influence.
The many Rare Earth Production enterprises in the whole nation are all in enhancing efficiency by relying on tapping internal latent power, and machinery, which goes out metal project implementation, can realize mechanization, can not only
Labor intensity is reduced, and can be laid the foundation to create friendly electrolytic environments, rare-earth trade is entered into benign, sound development
Track, there is important navigational significance to promoting Rare-earth Industry in the development of China, development prospect is wide.
Brief description of the drawings
Fig. 1 is the structural representation that medium-and-large-sized rare earth molten salt electrolytic of the invention goes out metal equipment.
Embodiment
Technical solution of the present invention is elaborated below with reference to example embodiment.However, example embodiment can
Implement in a variety of forms, and be not understood as limited to embodiment set forth herein;On the contrary, thesing embodiments are provided so that
The design of example embodiment more comprehensively and completely, and is comprehensively conveyed to those skilled in the art by the present invention.
As shown in figure 1, being the structural representation that medium-and-large-sized rare earth molten salt electrolytic of the invention goes out metal equipment.
Large-scale rare earth molten salt electrolytic goes out metal equipment, including:Vacuum plant, inert gas tank 4, ingot casting device and movement
Hoistable platform.Vacuum plant provides subnormal ambient to ingot casting room 5, including:Vavuum pump 1, pipeline 2, vacuum tank 3, vavuum pump 1 pass through
Pipeline 2 is connected with vacuum tank 3.Ingot casting device, including:Ingot casting room 5, ingot mould 6, suction pipe 7, ingot mould 6 are placed in ingot casting room 5,
Ingot casting room 5 is closed structure, and suction pipe 7 is connected with ingot casting room 5 using metal sealing.Ingot casting device is placed on mobile lifting platform 8
On.Vacuum tank 3 and inert gas tank 4 are connected by pipeline 2 with ingot casting room 5 respectively.
The shape of ingot casting room 5 selects hollow cuboid, square or spherical, and its top is provided with watch window (in order to protect
Negative pressure is held, is easy to observation, watch window is provided with seal glass).Mobile lifting platform can realize above and below, move around
It is dynamic.
Mobile lifting platform 8 includes:Moving cart, lifting support, supporting table;Lifting support is fixed on the upper of moving cart
Portion, supporting table is fixed at the top of lifting support;Moving cart bottom is provided with roller.
Inhale during casting without carrying out auxiliary heating to ingot mould and suction pipe.The ingot shape of ingot mould 6 can be cuboid, pros
Any shape such as body, prism, terrace with edge, cylinder, pyramid, spherical, hemispherical, single ingot weight can be any between 1kg-100kg
Weight.
Large-scale rare earth molten salt electrolytic go out metal equipment suitable for molten-salt electrolysis prepare lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium,
Single metal, binary above alloy in terbium, dysprosium, holmium, bait, thulium, ytterbium, lutetium, yttrium, scandium, and with iron, nickel, copper, magnesium, aluminium, zinc, cobalt,
Niobium, titanium, zirconium, manganese alloy.
The course of work is as follows:
1st, vacuumized by vavuum pump 1 so that ingot casting room 5 keeps negative pressure;
2nd, inert gas is filled with to ingot casting room 5 by inert gas tank 4;
3rd, vavuum pump 1 continues to vacuumize, under negative pressure, and liquid rare earth metal or alloy are sucked ingot mould 6, liquid by suction pipe 7
State rare earth metal or alloy carry out being cooled to blank on ingot mould 6.
Embodiment 1:
Large-scale rare earth molten salt electrolytic goes out metal and is equipped in 9600 amperes of fluoride system electrolytic cell progress, and electrolytic metal is
Praseodymium neodymium alloy.Ingot mould 6 uses cast iron mold, and ingot shape is diameter 60mm, and height 10cm cylinders, the material of suction pipe 7 uses titanium.Altogether
Ingot metal 59.2kg is inhaled, constituent analysis is shown in Table 1.Metal is manually scooped out to same stove to analyze, be shown in Table 2 simultaneously.
Table 1 inhales casting praseodymium neodymium product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Ti | Fe | Mo | RE | W |
644 | 0.0022 | 0.015 | 0.027 | 0.017 | < 0.010 | < 0.0050 | 0.19 | < 0.0050 | 99.83 | < 0.0050 |
Table 2 manually scoops out praseodymium neodymium product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Ti | Fe | Mo | RE | W |
644 | 0.0072 | 0.028 | 0.069 | 0.020 | < 0.010 | < 0.0050 | 0.22 | < 0.0050 | 99.13 | < 0.0050 |
Embodiment 2:
Large-scale rare earth molten salt electrolytic goes out metal and is equipped in 12000 amperes of fluoride system electrolytic cell progress, electrolytic metal
For lanthanum.Ingot mould 6 uses cast iron mold, and ingot shape is that 80mm × 80mm × 80mm is cube shaped, and the material of suction pipe 7 uses niobium.Inhale altogether
Ingot metal 70.8kg, constituent analysis is shown in Table 3.Metal is manually scooped out to same stove to analyze, be shown in Table 4 simultaneously.
Table 3 inhales casting lanthanum product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Nb | Fe | Mo | RE | W |
641 | 0.0023 | 0.015 | 0.054 | 0.016 | < 0.010 | 0.0054 | 0.18 | < 0.0050 | 99.89 | < 0.0050 |
Table 4 manually scoops out lanthanum product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Nb | Fe | Mo | RE | W |
641 | 0.0082 | 0.025 | 0.078 | 0.016 | < 0.010 | < 0.0050 | 0.26 | < 0.0050 | 99.22 | < 0.0050 |
Embodiment 3:
Large-scale rare earth molten salt electrolytic goes out metal and is equipped in 10500 amperes of fluoride system electrolytic cell progress, electrolytic metal
For cerium.Ingot mould 6 uses cast iron mold, and ingot shape is 85mm × 90mm × 50mm cuboids, and the material of suction pipe 7 uses titanium.Inhale altogether
Ingot metal 53.5kg, constituent analysis is shown in Table 5.Metal is manually scooped out to same stove to analyze, be shown in Table 6 simultaneously.
Table 5 inhales casting cerium product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Ti | Fe | Mo | RE | W |
645 | 0.0026 | 0.015 | 0.024 | 0.018 | < 0.010 | < 0.0050 | 0.2 | < 0.0050 | 99.81 | < 0.0050 |
Table 6 manually scoops out cerium product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Ti | Fe | Mo | RE | W |
645 | 0.0079 | 0.024 | 0.084 | 0.018 | < 0.010 | < 0.0050 | 0.28 | < 0.0050 | 99.19 | < 0.0050 |
Embodiment 4:
Large-scale rare earth molten salt electrolytic goes out metal and is equipped in 10000 amperes of fluoride system electrolytic cell progress, electrolytic metal
For neodymium.Ingot mould 6 uses cast iron mold, and ingot shape is that diameter 80mm is spherical, and the material of suction pipe 7 uses titanium.Ingot metal 57.6kg is inhaled altogether,
Constituent analysis is shown in Table 7.Metal is manually scooped out to same stove to analyze, be shown in Table 8 simultaneously.
Table 7 inhales casting neodymium product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Ti | Fe | Mo | RE | W |
650 | 0.0027 | 0.015 | 0.025 | 0.012 | < 0.010 | < 0.0050 | 0.24 | < 0.0050 | 99.84 | < 0.0050 |
Table 8 manually scoops out neodymium product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Ti | Fe | Mo | RE | W |
650 | 0.0085 | 0.021 | 0.074 | 0.020 | < 0.010 | < 0.0050 | 0.24 | < 0.0050 | 99.24 | < 0.0050 |
Embodiment 5:
Large-scale rare earth molten salt electrolytic goes out metal and is equipped in 11500 amperes of fluoride system electrolytic cell progress, electrolytic metal
For mischmetal.Ingot mould 6 uses cast iron mold, and ingot shape is 80mm × 95mm × 60mm cuboids, and the material of suction pipe 7 is used
Niobium.Ingot metal 69.5kg is inhaled altogether, and constituent analysis is shown in Table 9.Metal is manually scooped out to same stove to analyze, be shown in Table 10 simultaneously
It is shown.
Table 9 inhales casting norium product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Nb | Fe | Mo | RE | W |
654 | 0.0022 | 0.015 | 0.022 | 0.013 | < 0.010 | < 0.0050 | 0.25 | < 0.0050 | 99.82 | < 0.0050 |
Table 10 manually scoops out norium product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Nb | Fe | Mo | RE | W |
654 | 0.0063 | 0.025 | 0.056 | 0.024 | < 0.010 | < 0.0050 | 0.27 | < 0.0050 | 99.34 | < 0.0050 |
Embodiment 6:
Large-scale rare earth molten salt electrolytic goes out metal and is equipped in 9800 amperes of fluoride system electrolytic cell progress, and electrolytic metal is
Lanthanum ferroalloy.Ingot mould 6 uses cast iron mold, and ingot shape is 70mm × 80mm × 85mm cuboids, and the material of suction pipe 7 uses titanium.
Ingot metal 57.8kg is inhaled altogether, and constituent analysis is shown in Table 10.Metal is manually scooped out to same stove to analyze, be shown in Table 11 institutes simultaneously
Show.
Table 10 inhales casting lanthanum ferroalloy productor analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Ti | Fe | Mo | RE | W |
655 | 0.0024 | 0.018 | 0.026 | 0.010 | < 0.010 | < 0.0050 | 85.4 | < 0.0050 | 14.55 | < 0.0050 |
Table 11 manually scoops out lanthanum ferroalloy productor product analysis result table (%)
Heat (batch) number | Li | C | F | Al | Si | Ti | Fe | Mo | RE | W |
655 | 0.0072 | 0.024 | 0.058 | 0.013 | < 0.010 | < 0.0050 | 85.36 | < 0.0050 | 14.50 | < 0.0050 |
Term used herein is explanation and exemplary and nonrestrictive term.Because the present invention can be with a variety of
Form specific implementation without departing from the spiritual or substantive of invention, it should therefore be appreciated that above-described embodiment be not limited to it is any foregoing
Details, and should widely being explained in the spirit and scope that appended claims are limited, thus fall into claim or its etc.
Whole changes and remodeling in the range of effect all should be appended claims and covered.
Claims (5)
1. a kind of large-scale rare earth molten salt electrolytic goes out metal equipment, it is characterised in that:Including vacuum plant, inert gas tank, casting
Ingot device and mobile lifting platform;Vacuum plant is used to provide subnormal ambient to ingot casting room, and it includes vavuum pump, vacuum tank, very
Empty pump is connected by pipeline with vacuum tank;Ingot casting device includes ingot casting room, ingot mould, suction pipe, and ingot mould is placed in ingot casting room, casts
Ingot room is closed structure, and suction pipe is connected with ingot casting room using metal sealing, and ingot casting device is placed on mobile lifting platform;Vacuum
Tank and inert gas tank are connected by pipeline with ingot casting room respectively.
2. large-scale rare earth molten salt electrolytic as claimed in claim 1 goes out metal equipment, it is characterised in that:The shape of ingot casting room is selected
Hollow cuboid, square or spherical.
3. large-scale rare earth molten salt electrolytic as claimed in claim 2 goes out metal equipment, it is characterised in that:Ingot casting room top is provided with sight
Examine window.
4. large-scale rare earth molten salt electrolytic as claimed in claim 1 goes out metal equipment, it is characterised in that:Mobile lifting platform includes
Moving cart, lifting support, supporting table;Lifting support is fixed on the top of moving cart, and supporting table is fixed on lifting support top
Portion, moving cart bottom is provided with roller.
5. large-scale rare earth molten salt electrolytic as claimed in claim 1 goes out metal equipment, it is characterised in that:The ingot shape of ingot mould is from length
Cube, square, prism, terrace with edge, cylinder, pyramid, spherical or hemispherical, single ingot weight is between 1kg-100kg.
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Cited By (4)
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CN111020639A (en) * | 2019-12-20 | 2020-04-17 | 福建省长汀金龙稀土有限公司 | Tombarthite fused salt electrolysis siphon casting device |
CN111621815A (en) * | 2020-05-27 | 2020-09-04 | 赣州市华新金属材料有限公司 | Short-process method for preparing low-oxygen high-purity rare earth metal |
CN111992699A (en) * | 2020-09-01 | 2020-11-27 | 包头市金为达稀土材料有限公司 | Vacuum casting platform for pumping liquid rare earth metal |
CN116083684A (en) * | 2023-01-17 | 2023-05-09 | 有研稀土新材料股份有限公司 | Preparation method of low-oxygen rare earth alloy cored wire blank |
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CN111020639A (en) * | 2019-12-20 | 2020-04-17 | 福建省长汀金龙稀土有限公司 | Tombarthite fused salt electrolysis siphon casting device |
CN111621815A (en) * | 2020-05-27 | 2020-09-04 | 赣州市华新金属材料有限公司 | Short-process method for preparing low-oxygen high-purity rare earth metal |
CN111621815B (en) * | 2020-05-27 | 2022-05-13 | 赣州市华新金属材料有限公司 | Short-process method for preparing low-oxygen high-purity rare earth metal |
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CN116083684A (en) * | 2023-01-17 | 2023-05-09 | 有研稀土新材料股份有限公司 | Preparation method of low-oxygen rare earth alloy cored wire blank |
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