CN211897068U - Lithium-containing material continuous lithium smelting device - Google Patents
Lithium-containing material continuous lithium smelting device Download PDFInfo
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- CN211897068U CN211897068U CN202020265863.2U CN202020265863U CN211897068U CN 211897068 U CN211897068 U CN 211897068U CN 202020265863 U CN202020265863 U CN 202020265863U CN 211897068 U CN211897068 U CN 211897068U
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Abstract
The utility model provides a lithium containing material smelts lithium device in succession belongs to the resource utilization field. The utility model discloses following technological effect has: the induction heating device and the graphite crucible are used for heating and heating, the heating is rapid and uniform, the reduction time is controlled to be 2 hours after each charging, and the time is saved; the reduction chamber is vertical, is always in a molten state and is not bonded with the reduction slag in a reaction way, the slag is discharged quickly, the slag discharging problem of the shaft furnace is solved, and the feeding and discharging are carried out from the lower end, so that the shaft furnace is more convenient; in the whole working process, the reduction chamber is not cooled and does not break vacuum, continuous production can be realized, labor efficiency is improved, energy is saved, environment is protected, production efficiency is improved, continuous production is realized, the service life of equipment can be prolonged, simultaneously, the vacuum degree is maintained due to no furnace shutdown, the purity of lithium is high, compared with the existing lithium smelting technology, the current efficiency reaches 90%, the recovery rate of lithium reaches more than 90%, and the purity of lithium reaches 99.9%.
Description
Technical Field
The utility model relates to a resource utilization technical field especially relates to a contain lithium material and smelt lithium device in succession.
Background
At present, consumer electronic products represented by batteries, notebook computers and mobile phones have a strong demand for lithium batteries, and are a main driving force for pulling the demand for metal lithium to increase. With the progress and development of science and technology, people have higher and higher requirements on environmental protection, which promotes the development of electric locomotives, electric bicycles and new energy vehicles, and lead-acid batteries are heavy, inconvenient and easy to cause traffic accidents, so that the future pace of replacing lead-acid batteries by lithium batteries is further accelerated, and the popularization of new energy vehicles in particular greatly stimulates the requirements of the lithium batteries.
Lithium is mainly existed in two types in nature, one is existed in rock ore in the form of lithium-containing ore such as spodumene, lepidolite, petalite and the like, and the other is existed in salt lake brine, underground brine and seawater in the form of lithium ion. At present, the mainstream process for industrially producing the metal lithium is to smelt lithium by a molten salt electrolysis method and a vacuum reduction method, wherein the molten salt electrolysis method takes lithium chloride (LiCl) as a raw material and potassium chloride as an electrolyte, so that the effects of stabilization, cooling and electric conduction are achieved, and the electrolysis temperature is about 450-500 ℃. The method has the disadvantages that lithium in spodumene is firstly extracted into lithium carbonate and then converted into lithium chloride, the production cost is high, 5 tons of chlorine gas are generated when 1 ton of lithium is produced, and the air is seriously polluted; lithium smelting by the vacuum reduction method also takes lithium carbonate or lithium hydroxide monohydrate as a raw material, but the existing lithium smelting equipment by the vacuum reduction method has the problems of incapability of continuous production and low labor efficiency.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a device for continuously refining lithium from lithium-containing materials. The device provided by the utility model can continuous production, improves labor efficiency, improve equipment life.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
the utility model provides a lithium device is smelted in succession to lithium containing material, include: the device comprises a reduction chamber (1), a graphite crucible (11), an electric appliance control system (4), a vacuum unit (14), a hydraulic system (12) and a water cooling system (13);
the bottom of the reduction chamber (1) is provided with an induction heating device (2), the induction heating device (2) is connected with a heating power supply (3), a crucible lifting device (8) is arranged below the induction heating device (2), an isolation valve A (16) is arranged between the induction heating device (2) and the crucible lifting device (8), the reduction chamber (1) is connected with a vacuum unit (14) through an isolation valve E (18), the reduction chamber (1) is communicated with a crystallizer (17), the crystallizer (17) is connected with a metal lithium tank (21) through an isolation valve F (19), and the crystallizer (17) is connected with the vacuum unit (14) through an isolation valve G (20);
a feeding chamber (5) and a discharging chamber (10) are respectively arranged on two sides of the crucible lifting device (8), an isolating valve D (7) is arranged between the crucible lifting device (8) and the feeding chamber (5), and an isolating valve C (9) is arranged between the crucible lifting device (8) and the discharging chamber (10); the vacuum unit (14) is communicated with the discharge chamber (10) through an isolation valve B (15);
the graphite crucible (11) moves among the feeding chamber (5), the crucible lifting device (8) and the discharging chamber (10) through the moving device (6);
the electric appliance control system (4) is respectively connected with the reduction chamber (1), the feeding chamber (5), the discharging chamber (10), the crystallizer (17), the isolation valve A (16), the isolation valve B (15), the isolation valve C (9), the isolation valve D (7), the isolation valve E (18), the isolation valve F (19) and the isolation valve G (20), and the electric appliance control system (4) comprises a temperature measuring device and a vacuum detecting device and displays temperature and vacuum degree;
the hydraulic system (12) is connected with the crucible lifting device (8) and controls the crucible lifting device (8) to lift;
and the water cooling system (13) is respectively connected with the reduction chamber (1), the induction heating device (2), the vacuum unit (14) and the crystallizer (17).
Preferably, the reduction chamber (1) is of a double-layer water cooling structure.
Preferably, the lithium metal can (21) contains liquid paraffin.
Preferably, a graphite filter is arranged in the crystallizer (17).
Preferably, the induction heating device (2) is an electromagnetic induction heating device.
The utility model provides a lithium device is smelted in succession to lithium containing material, include: the device comprises a reduction chamber (1), a graphite crucible (11), an electric appliance control system (4), a vacuum unit (14), a hydraulic system (12) and a water cooling system (13);
the bottom of the reduction chamber (1) is provided with an induction heating device (2), the induction heating device (2) is connected with a heating power supply (3), a crucible lifting device (8) is arranged below the induction heating device (2), an isolation valve A (16) is arranged between the induction heating device (2) and the crucible lifting device (8), the reduction chamber (1) is connected with a vacuum unit (14) through an isolation valve E (18), the reduction chamber (1) is communicated with a crystallizer (17), the crystallizer (17) is connected with a metal lithium tank (21) through an isolation valve F (19), and the crystallizer (17) is connected with the vacuum unit (14) through an isolation valve G (20);
a feeding chamber (5) and a discharging chamber (10) are respectively arranged on two sides of the crucible lifting device (8), an isolating valve D (7) is arranged between the crucible lifting device (8) and the feeding chamber (5), and an isolating valve C (9) is arranged between the crucible lifting device (8) and the discharging chamber (10); the vacuum unit (14) is communicated with the discharge chamber (10) through an isolation valve B (15);
the graphite crucible (11) moves among the feeding chamber (5), the crucible lifting device (8) and the discharging chamber (10) through the moving device (6);
the electric appliance control system (4) is respectively connected with the reduction chamber (1), the feeding chamber (5), the discharging chamber (10), the crystallizer (17), the isolation valve A (16), the isolation valve B (15), the isolation valve C (9), the isolation valve D (7), the isolation valve E (18), the isolation valve F (19) and the isolation valve G (20), and the electric appliance control system (4) comprises a temperature measuring device and a vacuum detecting device and displays temperature and vacuum degree;
the hydraulic system (12) is connected with the crucible lifting device (8) and controls the crucible lifting device (8) to lift;
and the water cooling system (13) is respectively connected with the reduction chamber (1), the induction heating device (2), the vacuum unit (14) and the crystallizer (17).
The utility model discloses following technological effect has:
(1) the induction heating device and the graphite crucible are used for heating and heating, the heating is rapid and uniform, the reduction time is controlled to be 2 hours after each charging, and the time is saved.
(2) The feeding and discharging are smooth. Firstly, the reduction chamber is vertical and is always in a molten state, and is not bonded with the reduction slag in a reaction way, and secondly, the slag is discharged quickly, so that the slag discharging problem of the shaft furnace is solved; thirdly, the feeding and discharging are carried out from the lower end, which is more convenient.
(3) In the whole working process, the reduction chamber is not cooled and does not break vacuum, continuous production can be realized, labor efficiency is improved, energy is saved, environment is protected, production efficiency is improved, continuous production is realized, the service life of equipment can be prolonged, simultaneously, the vacuum degree is maintained due to no furnace shutdown, the purity of lithium is high, compared with the existing lithium smelting technology, the current efficiency reaches 90%, the recovery rate of lithium reaches more than 90%, and the purity of lithium reaches 99.9%.
Furthermore, the crystallizer is provided with a graphite filter and a metal lithium tank, the metal lithium is in a liquid state, the temperature in the crystallizer is controlled to be 200-300 ℃, and the purity of the lithium is high.
Drawings
Fig. 1 is a schematic structural diagram of a lithium-containing material continuous lithium smelting device of the present invention, wherein 1-a reduction chamber, 2-an induction heating device, 3-a heating power supply, 4-an electrical control system, 5-a feeding chamber, 6-a moving device, 7-an isolation valve D, 8-a crucible lifting device, 9-an isolation valve C, 10-a discharging chamber, 11-a graphite crucible, 12-a hydraulic system, 13-a water cooling system, 14-a vacuum unit, 15-an isolation valve B, 16-an isolation valve a, 17-a crystallizer, 18-an isolation valve E, 19-an isolation valve F, 20-an isolation valve G, 21-a metallic lithium tank;
FIG. 2 is a flow chart of a solid waste-free continuous process for producing Li from spodumene as Li-containing material in example 1.
Detailed Description
The utility model provides a lithium device is smelted in succession to lithium containing material, include: the device comprises a reduction chamber (1), a graphite crucible (11), an electric appliance control system (4), a vacuum unit (14), a hydraulic system (12) and a water cooling system (13);
the bottom of the reduction chamber (1) is provided with an induction heating device (2), the induction heating device (2) is connected with a heating power supply (3), a crucible lifting device (8) is arranged below the induction heating device (2), an isolation valve A (16) is arranged between the induction heating device (2) and the crucible lifting device (8), the reduction chamber (1) is connected with a vacuum unit (14) through an isolation valve E (18), the reduction chamber (1) is communicated with a crystallizer (17), the crystallizer (17) is connected with a metal lithium tank (21) through an isolation valve F (19), and the crystallizer (17) is connected with the vacuum unit (14) through an isolation valve G (20);
a feeding chamber (5) and a discharging chamber (10) are respectively arranged on two sides of the crucible lifting device (8), an isolating valve D (7) is arranged between the crucible lifting device (8) and the feeding chamber (5), and an isolating valve C (9) is arranged between the crucible lifting device (8) and the discharging chamber (10); the vacuum unit (14) is communicated with the discharge chamber (10) through an isolation valve B (15);
the graphite crucible (11) moves among the feeding chamber (5), the crucible lifting device (8) and the discharging chamber (10) through the moving device (6);
the electric appliance control system (4) is respectively connected with the reduction chamber (1), the feeding chamber (5), the discharging chamber (10), the crystallizer (17), the isolation valve A (16), the isolation valve B (15), the isolation valve C (9), the isolation valve D (7), the isolation valve E (18), the isolation valve F (19) and the isolation valve G (20), and the electric appliance control system (4) comprises a temperature measuring device and a vacuum detecting device and displays temperature and vacuum degree;
the hydraulic system (12) is connected with the crucible lifting device (8) and controls the crucible lifting device (8) to lift;
and the water cooling system (13) is respectively connected with the reduction chamber (1), the induction heating device (2), the vacuum unit (14) and the crystallizer (17).
Fig. 1 is a schematic structural diagram of the lithium-containing material continuous lithium smelting device of the present invention, wherein 1-a reduction chamber, 2-an induction heating device, 3-a heating power supply, 4-an electrical control system, 5-a feeding chamber, 6-a moving device, 7-an isolation valve D, 8-a crucible lifting device, 9-an isolation valve C, 10-a discharging chamber, 11-a graphite crucible, 12-a hydraulic system, 13-a water cooling system, 14-a vacuum unit, 15-an isolation valve B, 16-an isolation valve A, 17-a crystallizer, 18-an isolation valve E, 19-an isolation valve F, 20-an isolation valve G, and 21-a metal lithium tank.
In the utility model discloses, reduction room (1) is preferably the double-deck water cooling structure that leads to.
The utility model discloses in, contain liquid paraffin in lithium metal jar (21), preferably regularly take off from crystallizer (17) in lithium metal jar (21), be connected to the glove box that is full of high-purity argon gas, then open the valve of lithium metal jar, obtain the lithium ingot.
The utility model discloses in, the preferred graphite filter that is equipped with in crystallizer (17), the graphite filter can filter the dust to still play the effect that prevents the temperature diffusion.
In the present invention, the induction heating device (2) is preferably an electromagnetic induction heating device.
The utility model discloses still contain a lithium method is smelted in succession to lithium containing material, utilize above-mentioned technical scheme lithium containing material smelt lithium device in succession, including following step:
opening a door of the feeding chamber (5), putting pellets made of lithium-containing materials, auxiliaries and reducing agents into a graphite crucible (11), and closing the door of the feeding chamber (5); an isolation valve D (7) is opened through an electric appliance control system (4), and the graphite crucible (11) is moved onto a crucible lifting device (8) through a moving device (6); opening an isolation valve A (16), and lifting the graphite crucible (11) into the induction heating device (2) through a crucible lifting device (8); starting a vacuum unit (14) through an electric appliance control system (4), opening an isolation valve B (15) and an isolation valve C (9), and vacuumizing a discharging chamber (10) and a feeding chamber (5); opening an isolation valve E (18), an isolation valve F (19) and an isolation valve G (20) to vacuumize the reduction chamber (1), the crystallizer (17) and the metal lithium tank (21); starting a water cooling system (13) to feed water into the vacuum unit (14), the reduction chamber (1), the crystallizer (17) and the induction heating device (2) for cooling; starting a heating power supply (3) to heat the induction heating device (2), displaying the vacuum degree and the temperature in an electric appliance control system (4), carrying out reduction reaction, and collecting lithium in a crystallizer (17) in a liquid state and flowing into a metal lithium tank (21);
after the reduction reaction is finished, the graphite crucible (11) is descended through a crucible lifting device (8), an isolation valve A (16) and an isolation valve D (7) are closed, the mobile device (6) is moved to enter the discharging chamber (10), an isolation valve C (9) is closed, and a door of the discharging chamber (10) is opened to break vacuum;
the hydraulic system (12) is connected with the crucible lifting device (8) and controls the lifting of the crucible lifting device (8).
In the present invention, when the lithium-containing material is preferably lithium carbonate or lithium hydroxide monohydrate, the auxiliary agent is preferably a mixture of alumina and calcium oxide, and the reducing agent is preferably aluminum-silicon alloy.
In the utility model discloses, the purity of lithium carbonate and lithium hydroxide monohydrate is all preferred above 98%, the purity of aluminium oxide and calcium oxide is all preferably greater than 98%. In the present invention, the lithium carbonate/lithium hydroxide monohydrate: alumina: the mass ratio of calcium oxide is preferably 2-3: 1-1.5.
The utility model discloses in, preferably will roasting and grinding are carried out in proper order after lithium carbonate or lithium hydroxide monohydrate and auxiliary agent mix, press into the pelletizing after mixing gained mixture, reductant and catalyst and put into graphite crucible (11). The utility model discloses in, 750 ~ 850 ℃ is preferred to the temperature of calcination, and the time is preferred 60 ~ 100 minutes. In the present invention, the grinding is preferably performed to a fine size of 60 mesh. In the utility model discloses in, aluminium silicon alloy preferably adds with the form of aluminium silicon alloy powder, aluminium silicon alloy powder's granularity is preferably 60 meshes, joins in marriage 5 ~ 10% of total mass after the preferred mixture calcination of lithium carbonate or lithium hydroxide monohydrate and auxiliary agent of volume.
In the present invention, the catalyst is preferably CaF2CaF in the graphite crucible (11)2The mass fraction (b) of (c) is preferably 2 to 5%, more preferably 3 to 4%.
The utility model discloses in, the temperature of reduction reaction is preferred 1100 ~ 1200 ℃, and vacuum degree is preferred 5 ~ 10Pa, and time preferred is 1 ~ 2 hours.
Lithium obtained by the reduction reaction is collected in the crystallizer (17) in liquid form. In the utility model discloses, the temperature of crystallizer (17) is preferably 200 ~ 300 ℃.
After the reduction reaction is finished, the graphite crucible (11) descends through a crucible lifting device (8), an isolation valve A (16) and an isolation valve D (7) are closed, the mobile device (6) is moved to enter the discharge chamber (10), an isolation valve C (9) is closed, and a door of the discharge chamber (10) is opened to break vacuum. In the present invention, the lithium extraction tailings obtained by the reduction reaction preferably include CaO 7Al2O3(s) (slag), 2 CaO. SiO2(s)， CaO(s)·SiO2(s) and Al2O3·2SiO2The chemical composition is preferably: 40-50 wt% of calcium oxide, 40-60 wt% of aluminum oxide, 15-30 wt% of silicon oxide and the balance of other oxides.
In the present invention, when the lithium-containing material is preferably a lithium-containing mineral, the auxiliary agent preferably comprises a metal oxide, and the preferred reducing agent comprises one or more of aluminum, magnesium, silicon, calcium-silicon alloy, aluminum-magnesium alloy, aluminum-silicon alloy, and silicon-magnesium alloy.
In the present invention, it is preferable that the catalyst CaF is further included2Putting the mixture into a graphite crucible (11) for reduction reaction. In the utility model, the catalyst CaF in the graphite crucible (11)2The mass fraction (b) of (c) is preferably 2 to 5%, more preferably 3 to 4%.
In the present invention, the metal oxide active lime preferably comprises at least 95 wt% of CaO, SiO2≤1.0wt％，P≤0.03wt％，S≤0.03 wt％。
In the present invention, the lithium-containing mineral is preferably spodumene.
In the present invention, the mass ratio of the lithium-containing mineral, the additive and the reducing agent is preferably (45-50): (40-45): (5-10).
In the present invention, the reduction reaction preferably includes a first reduction and a second reduction in this order,
the temperature of the first reduction is preferably 500-700 ℃, more preferably 550-650 ℃, the vacuum degree of the first reduction is preferably 1-50 Pa, more preferably 20-45 Pa, the heating rate of heating to the temperature of the first reduction is preferably 5-15 ℃/min, more preferably 8-14 ℃/min, and the heat preservation time of the first reduction is preferably 30-60 min, more preferably 40-50 min;
the temperature of the second reduction is preferably 1100-1300 ℃, more preferably 1150-1250 ℃, the vacuum degree of the second reduction is preferably 1000-1200 Pa, more preferably 1050-1150 Pa, the heating rate of heating to the temperature of the second reduction is preferably 5-15 ℃/min, more preferably 9-12 ℃/min, and the heat preservation time of the second reduction is preferably 2.5-3 h. The utility model discloses in, the heat preservation time of second reduction can guarantee no longer that lithium steam generates.
In the present invention, taking spodumene as an example, the process of the reduction reaction in which the catalyst is added, the auxiliary agent is a metal oxide such as calcium oxide, and the reducing agent is an aluminum-silicon alloy is as follows:
7[Li2O·Al2O3·4SiO2](spodumene) +43CaO (adjuvant) +2[ AlSi](reducing agent) ═ CaO.7Al2O3(s) (slag) +14[2 CaO. SiO2(s)]+14[Li](g) (metallic lithium) +14[ CaO(s). SiO2(s)](slag) + [ Al2O3·2SiO2](slag)
The lithium obtained from the reduction reaction is collected in liquid form and crystallized in a crystallizer (17). In the utility model discloses, the temperature of crystallizer (17) is preferably 200 ~ 300 ℃.
After the reduction reaction is finished, the graphite crucible (11) descends through a crucible lifting device (8), an isolation valve A (16) and an isolation valve D (7) are closed, the mobile device (6) is moved to enter the discharge chamber (10), an isolation valve C (9) is closed, and a door of the discharge chamber (10) is opened to break vacuum. In the utility model, the lithium extraction tailings obtained by the reduction reaction preferably comprise CaO.7Al2O3(s) (slag), 2 CaO. SiO2(s)， CaO(s)·SiO2(s) and Al2O3·2SiO2The chemical composition preferably comprises: 30-50 wt% of calcium oxide, 15-30 wt% of aluminum oxide, 30-50 wt% of silicon oxide, and the balance of ferric oxide and the like.
After the reduction reaction is finished, preferably mixing lithium-extracted tailings of the lithium-containing material obtained from the discharging chamber (10), a reducing agent, a binder and water, and then briquetting to obtain pellets, wherein the reducing agent comprises bituminous coal and petroleum coke;
carrying out reduction reaction on the pellets to obtain aluminum-silicon-calcium alloy liquid and scum, wherein the scum is used as a raw material for preparing metal lithium and extracting lithium tailings from a lithium-containing material;
mixing the aluminum-silicon-calcium alloy liquid with a refining agent for refining to obtain an aluminum-silicon-calcium alloy;
and carrying out vacuum distillation on the aluminum-silicon-calcium alloy to obtain metal calcium and aluminum-silicon alloy.
The utility model discloses will lithium-containing material that ejection of compact room (10) obtained carries behind lithium tailings, reductant, binder and the water mixture briquetting, obtains the pelletizing, the reductant includes bituminous coal and petroleum coke.
In the present invention, the pellet preferably comprises the following components in percentage by weight: 50-65% of lithium-extracting tailings of lithium-containing materials, 20-40% of reducing agent, 5-8% of binder and 4-6% of water, wherein the sum of the mass percentages of the components is 100%. The present invention is not limited to the kind of the adhesive, and the kind of the adhesive known to those skilled in the art may be used.
In the utility model discloses in, the lithium material carries lithium sediment and reductant preferably independently grinds the powder that the granularity is less than 1mm and uses again.
In the utility model discloses, the preferred mass ratio of bituminous coal and petroleum coke is 8: 2-6: 4.
the utility model discloses in, the fixed carbon content of bituminous coal is preferably 40 ~ 60%, the fixed carbon content of petroleum coke is preferably 80 ~ 90%. In the utility model discloses, the sum of the fixed carbon content in bituminous coal and petroleum coke is preferably 93 ~ 95% of the theoretical demand that the reduction reaction goes on completely.
In the utility model discloses in, the pelletizing is preferred to be made the pelletizing in the briquetting machine, the pressure of briquetting is preferred 20 ~ 30 MPa.
The utility model discloses in, preferably still including the stoving behind the briquetting, the stoving is preferably not more than 1% at the dehydration to the quality percentage content of pelletizing normal water under 100 ~ 200 ℃.
After the pellets are obtained, the utility model discloses will the pellets carry out reduction reaction, obtain aluminium silicon calcium alloy liquid and dross, the dross is used for containing lithium material to carry out lithium tailings preparation lithium metal auxiliary agent.
The utility model discloses in, the temperature of reduction reaction is preferably 1600 ~ 1900 ℃, more preferably 1550 ~ 1600 ℃, and the time is preferably 2 ~ 3 h. The utility model discloses owing to used the lithium material that contains to carry the lithium tailings, contained a large amount of calcium oxide in the lithium material that contains carries the lithium tailings, so reduction reaction's temperature is low. In the present invention, the reduction reaction is preferably carried out in an alternating current or direct current ore-heating arc furnace.
The utility model discloses in, the output of dross is preferred 2 ~ 5%, the principal ingredients of dross includes calcium oxide 30 ~ 50 wt%, aluminium oxide 15 ~ 30 wt%, silicon oxide 30 ~ 50 wt%, and the surplus is other oxides.
After the reduction reaction is finished, the utility model preferably releases the aluminum-silicon-calcium alloy liquid from the aluminum outlet ladle at regular intervals. In the utility model discloses, regular preferred interval is 2 ~ 3 hours.
After the aluminum-silicon-calcium alloy liquid is obtained, the utility model mixes the aluminum-silicon-calcium alloy liquid with a refining agent for refining to obtain the aluminum-silicon-calcium alloy. In the utility model, because the aluminum-silicon-calcium alloy liquid contains a certain amount of non-metallic impurities, the refining agent is added to remove slag in the ladle. The refining agent of the present invention is not particularly limited in kind and amount, and may be prepared by a conventional technique of those skilled in the art.
The utility model discloses in, the refining is preferred to include vacuum filtration slagging-off, mix and dilute back ingot casting in proper order, obtains aluminium silicon calcium alloy. In the present invention, the aluminum-silicon-calcium alloy preferably includes the following components: 30-45 wt% of aluminum, 20-40 wt% of silicon, 20-45 wt% of calcium, and the balance of other elements contained in raw materials entering the aluminum-silicon-calcium alloy through refining.
After the aluminum-silicon-calcium alloy is obtained, the utility model discloses will the aluminum-silicon-calcium alloy carries out vacuum distillation, obtains metallic calcium and aluminum-silicon alloy. The utility model discloses in, vacuum distillation's vacuum is preferred 0.5 ~ 20Pa, and the temperature is preferred 1000 ~ 1300 ℃, and the time is preferred 2 ~ 5 h. In the utility model, the aluminum-silicon-calcium alloy is preferably crushed into fragments with the granularity less than or equal to 10cm, and then the fragments are put into a vacuum distillation tank for vacuum distillation. The utility model discloses in after the vacuum distillation is accomplished, calcium is distilled out and becomes solid-state metal calcium at the condensation, and remaining material is aluminium-silicon alloy. In the present invention, the aluminum-silicon alloy preferably includes the following components: al 35-50 wt%, Si 40-60 wt%, Ca0.001-0.005 wt%, and the balance of other elements contained in the raw materials entering the aluminum-silicon-calcium alloy through refining. In the present invention, the aluminum-silicon alloy is preferably reused as a reducing agent for extracting lithium from the lithium-containing material.
In order to further illustrate the present invention, the lithium-containing material continuous lithium smelting device provided by the present invention is described in detail with reference to the following examples, but they should not be construed as limiting the scope of the present invention.
The embodiment of the utility model is carried out in the lithium-containing material continuous lithium smelting device shown in figure 1.
Example 1
Fig. 2 is a flow chart of a method for continuously refining lithium without solid wastes in example 1, in which spodumene is used as a lithium-containing material, the lithium-containing material is crushed and ground, then mixed with an auxiliary agent and a reducing agent to be pressed into balls, reduction reaction is performed in a continuous lithium-containing material refining device shown in fig. 1 to obtain metal lithium and lithium extraction tailings, the reducing agent and a binder are mixed to be pressed into balls to be subjected to reduction reaction to obtain aluminum-silicon-calcium alloy liquid and scum, the scum is used for preparing metal lithium from the lithium-containing material, the aluminum-silicon-calcium alloy liquid is refined to obtain aluminum-silicon-calcium alloy, and the aluminum-silicon-calcium alloy is subjected to vacuum distillation to obtain metal calcium and aluminum-silicon alloy, and the aluminum.
The first furnace starts: according to the weight ratio of dry spodumene as a lithium-containing material (after crushing and grinding), calcium oxide and aluminum-silicon alloy of 45: 45: 5 preparing materials, and adding CaF2Forming mixed raw materials, pressing the mixed raw materials under 50Mpa to form pellets; the particle size of the pellets pressed by the mixed raw materials is about 40 mm. The adopted calcium-silicon alloy is powdery with the fineness of 120 meshes, and the chemical composition of silicon: 60 wt%, aluminum: 40 wt%.
Manually opening a door of the feeding chamber (5), putting pellets made of lithium-containing materials, auxiliaries and reducing agents into a graphite crucible (11), and closing the door of the feeding chamber (5); an isolation valve D (7) is opened through an electric appliance control system (4), and the graphite crucible (11) is moved onto a crucible lifting device (8) through a moving device (6); opening an isolation valve A (16), and lifting the graphite crucible (11) into the induction heating device (2) through a crucible lifting device (8); starting a vacuum unit (14) through an electric appliance control system (4), opening an isolation valve B (15) and an isolation valve C (9), and vacuumizing a discharging chamber (10) and a feeding chamber (5); opening an isolation valve E (18), an isolation valve F (19) and an isolation valve G (20) to vacuumize the reduction chamber (1), the crystallizer (17) and the metal lithium tank (21); starting a water cooling system (13) to feed water into the vacuum unit (14), the reduction chamber (1), the crystallizer (17) and the induction heating device (2) for cooling; starting a heating power supply (3) to heat the induction heating device (2), displaying the vacuum degree and the temperature in an electric appliance control system (4), carrying out reduction reaction, heating the induction heating device (2) to 550 ℃ at the heating rate of 14 ℃/min, keeping the temperature for 50min, and keeping the vacuum degree at 1 Pa; continuously heating to 1150 ℃ at a heating rate of 14 ℃/min, controlling the vacuum degree of a vacuum reactor to 1050Pa until no lithium vapor is generated, keeping the temperature for about 3h, collecting lithium in a crystallizer (17) in a liquid state, connecting the crystallizer (17) with a metal lithium tank (21), simultaneously arranging a graphite filter, enabling the metal lithium tank (20) to contain liquid paraffin, taking down the metal lithium tank (21) from the crystallizer (17) periodically, connecting the metal lithium tank to a glove box filled with high-purity argon, and then opening a valve of the metal lithium tank to obtain a lithium ingot, wherein the purity of the lithium ingot is 99.9%, the recovery rate is 92%, and the current efficiency reaches 90%;
after the reduction reaction is finished, the graphite crucible (11) is descended through a crucible lifting device (8), an isolation valve A (16) is closed, an isolation valve D (7) is closed, the mobile device (6) is moved to enter the discharging chamber (10), an isolation valve C (9) is closed, and a door of the discharging chamber (10) is opened to break vacuum;
the hydraulic system (12) is connected with the crucible lifting device (8) and controls the crucible lifting device (8) to lift;
the water cooling system (13) is respectively connected with the vacuum unit (14), the reduction chamber (1), the induction heating device (2) and the crystallizer (17).
The second furnace starts: closing an isolation valve D (7), manually opening a feeding chamber (5), filling a graphite crucible (11) with materials, closing a door of the feeding chamber (5), vacuumizing the feeding chamber (5) to a process-required vacuum degree, opening the isolation valve D (7), moving the graphite crucible (11) to a crucible lifting device (8) through a moving device (6), opening an isolation valve A (16), lifting the graphite crucible (11) into an induction heating device (2) through the crucible lifting device (8), wherein the vacuum degree and the temperature of a reduction chamber (1) meet the process requirements of a reduction reaction, the reduction reaction starts to be carried out, and lithium can be collected in a crystallizer (17) in a liquid form and flows into a metal lithium tank (21). After the reaction is completed, the graphite crucible (11) descends through a crucible lifting device (8), an isolation valve A (16) is closed, an isolation valve C (9) is opened, a mobile device (6) enters a discharging chamber (10), the isolation valve C (9) is closed, the discharging chamber (10) is vacuumized, the graphite crucible (11) is taken out, residues of the graphite crucible (11) are cleaned, a door of the discharging chamber (10) is closed, the discharging chamber (10) is vacuumized to reach the vacuum degree required by the process, and the processes are circulated in sequence.
The lithium extraction tailings obtained from the discharging chamber (10) preferably comprise CaO & 7Al2O3(s) (slag), 2 CaO. SiO2(s)， CaO(s)·SiO2(s) and Al2O3·2SiO2The chemical composition is as follows: 50 wt% of calcium oxide, 15 wt% of aluminum oxide, 30 wt% of silicon oxide and the balance of ferric oxide.
Grinding the lithium extraction tailings obtained from the discharging chamber (10) to obtain powder with the granularity of 100-120 meshes, mixing the lithium extraction tailings powder, a reducing agent, a binder and water, briquetting under 30MPa, and dehydrating at 200 ℃ until the mass percentage of water in the pellets is not more than 1%, wherein the pellets comprise the following components in percentage by weight: the method comprises the following steps of preparing lithium-containing material lithium extraction tailings, namely 50% of lithium-containing material lithium extraction tailings powder, 40% of reducing agent, 5% of binder and 5% of water, wherein the reducing agent comprises bituminous coal and petroleum coke (the mass ratio is 8: 2), the fixed carbon content of the bituminous coal is 40%, the fixed carbon content of the petroleum coke is 80%, the sum of the fixed carbon contents of the bituminous coal and the petroleum coke is 93% of the theoretical requirement amount of complete reduction reaction, pellets are subjected to reduction reaction at 1900 ℃ for 2 hours to obtain aluminum-silicon-calcium alloy liquid and scum, the aluminum-silicon-calcium alloy liquid is discharged from an aluminum outlet ladle at intervals of 2 hours, the scum is used for preparing a lithium metal auxiliary agent from the lithium-containing material lithium extraction tailings, the yield of the scum is 2%, and the scum mainly comprises 50 wt% of calcium oxide; mixing the aluminum-silicon-calcium alloy liquid with a refining agent, carrying out vacuum filtration to remove slag, mixing and diluting, and then carrying out ingot casting to obtain an aluminum-silicon-calcium alloy, wherein the aluminum-silicon-calcium alloy comprises the following components: 30 wt% of aluminum, 40 wt% of silicon and 20 wt% of calcium, and the balance of other elements contained in raw materials entering the aluminum-silicon-calcium alloy through refining, and carrying out vacuum distillation on the aluminum-silicon-calcium alloy (the vacuum degree is 0.5Pa, the temperature is 1000 ℃, and the time is 2 hours) to obtain metal calcium and the aluminum-silicon alloy, wherein the aluminum-silicon alloy comprises the following components: al40 wt%, Si58 wt%, Ca0.005wt%, and the balance of other elements contained in the raw materials introduced into the Al-Si-Ca alloy by refining, and the Al-Si alloy is preferably reused as a lithium-extracting reducing agent for lithium-containing materials.
Example 2
Continuously smelting lithium by taking lithium carbonate as raw material
The first furnace starts: the method is characterized in that commercially available lithium carbonate is used as a raw material, a mixture of aluminum oxide and calcium oxide is used as an auxiliary agent, and aluminum-silicon alloy is used as a reducing agent. Wherein the purity of the lithium carbonate is more than 98 percent. The purity of the alumina and the calcium oxide is more than 98 percent. The mixture ratio (mass ratio) is as follows: lithium carbonate: alumina: calcium oxide 2:1:1, mixing uniformly, roasting at 750 deg.C for 100 min. Grinding to 60 meshes after the mixture is sintered, adding aluminum-silicon alloy powder with the granularity of 60 meshes and the addition amount (accounting for the total mass of the mixture of lithium carbonate, aluminum oxide and calcium oxide after being roasted) of 8 percent, and adding CaF accounting for 2 percent of the mixture2The mixed raw material is obtained and pressed into pellets.
Manually opening a door of the feeding chamber (5), putting pellets made of lithium-containing materials, auxiliaries and reducing agents into a graphite crucible (11), and closing the door of the feeding chamber (5); an isolation valve D (7) is opened through an electric appliance control system (4), and the graphite crucible (11) is moved onto a crucible lifting device (8) through a moving device (6); opening an isolation valve A (16), and lifting the graphite crucible (11) into the induction heating device (2) through a crucible lifting device (8); starting a vacuum unit (14) through an electric appliance control system (4), opening an isolation valve B (15) and an isolation valve C (9), and vacuumizing a discharging chamber (10) and a feeding chamber (5); opening an isolation valve E (18), an isolation valve F (19) and an isolation valve G (20) to vacuumize the reduction chamber (1), the crystallizer (17) and the metal lithium tank (21); starting a water cooling system (13) to feed water into the vacuum unit (14), the reduction chamber (1), the crystallizer (17) and the induction heating device (2) for cooling; starting a heating power supply (3) to heat the induction heating device (2), displaying the vacuum degree and the temperature in an electric appliance control system (4), carrying out reduction reaction, heating the induction heating device (2) to 550 ℃ at the heating rate of 14 ℃/min, keeping the temperature for 50min, and keeping the vacuum degree at 1 Pa; continuously heating to 1150 ℃ at a heating rate of 14 ℃/min, controlling the vacuum degree of a vacuum reactor to 1050Pa until no lithium vapor is generated, keeping the temperature for about 3h, collecting lithium in a crystallizer (17) in a liquid state, connecting the crystallizer (17) with a metal lithium tank (21), simultaneously arranging a graphite filter, enabling the metal lithium tank (20) to contain liquid paraffin, taking down the metal lithium tank (21) from the crystallizer (17) periodically, connecting the metal lithium tank to a glove box filled with high-purity argon, and then opening a valve of the metal lithium tank to obtain a lithium ingot, wherein the purity of the lithium ingot is 99.9%, the recovery rate is 92%, and the current efficiency reaches 90%;
after the reduction reaction is finished, the graphite crucible (11) is descended through a crucible lifting device (8), an isolation valve A (16) is closed, an isolation valve D (7) is closed, the mobile device (6) is moved to enter the discharging chamber (10), an isolation valve C (9) is closed, and a door of the discharging chamber (10) is opened to break vacuum;
the hydraulic system (12) is connected with the crucible lifting device (8) and controls the crucible lifting device (8) to lift;
the water cooling system (13) is respectively connected with the vacuum unit (14), the reduction chamber (1), the induction heating device (2) and the crystallizer (17).
The second furnace starts: closing an isolation valve D (7), manually opening a feeding chamber (5), filling a graphite crucible (11) with materials, vacuumizing the feeding chamber (5) to a process-required vacuum degree, opening the isolation valve D (7), moving the graphite crucible (11) to a crucible lifting device (8) through a moving device (6), opening an isolation valve A (16), lifting the graphite crucible (11) into an induction heating device (2) through the crucible lifting device (8), wherein the vacuum degree and the temperature of a reduction chamber (1) meet the process requirements of a reduction reaction, the reduction reaction is started, and lithium can be collected in a crystallizer (17) in a liquid form and flows into a metal lithium tank (21). After the reaction is completed, the graphite crucible (11) descends through a crucible lifting device (8), an isolation valve A (16) is closed, an isolation valve C (9) is opened, a mobile device (6) enters a discharge chamber (10), the isolation valve C (9) is closed, a door of the discharge chamber (10) is opened to break vacuum, the graphite crucible (11) is taken out, residues of the graphite crucible (11) are cleaned, the door of the discharge chamber (10) is closed, the discharge chamber (10) is vacuumized to reach the vacuum degree required by the process, and the processes are circulated in sequence.
The lithium extraction tailings obtained from the discharging chamber (10) comprise CaO.7Al2O3(s) (slag), 2 CaO. SiO2(s)， CaO(s)·SiO2(s) and Al2O3·2SiO2The chemical components are as follows: 30 wt% of calcium oxide, 30 wt% of aluminum oxide, 30 wt% of silicon oxide and the balance of other oxides.
Grinding the lithium extraction tailings obtained from the discharging chamber (10) to obtain powder with the granularity of 100-120 meshes, mixing the lithium extraction tailings powder, a reducing agent, a binder and water, briquetting under 30MPa, and dehydrating at 100 ℃ until the mass percentage of water in the pellets is not more than 1%, wherein the pellets comprise the following components in percentage by weight: 65% of lithium-containing material lithium extraction tailings powder, 25% of a reducing agent, 6% of a binder and 4% of water, wherein the reducing agent comprises bituminous coal and petroleum coke (the mass ratio is 6: 4), the fixed carbon content of the bituminous coal is 60%, the fixed carbon content of the petroleum coke is 90%, the sum of the fixed carbon contents of the bituminous coal and the petroleum coke is 95% of the theoretical requirement for complete reduction reaction, the pellets are subjected to reduction reaction for 3 hours at 1600 ℃ to obtain aluminum-silicon-calcium alloy liquid and scum, the aluminum-silicon-calcium alloy liquid is discharged from an aluminum outlet at regular intervals of 3 hours, the scum is used for preparing a lithium metal additive from the lithium-containing material lithium extraction tailings, the yield of the scum is 3%, and the scum mainly comprises 30 wt% of calcium oxide, 30 wt% of aluminum oxide, 38 wt% of silicon oxide and the balance; mixing the aluminum-silicon-calcium alloy liquid with a refining agent, carrying out vacuum filtration to remove slag, mixing and diluting, and then carrying out ingot casting to obtain an aluminum-silicon-calcium alloy, wherein the aluminum-silicon-calcium alloy comprises the following components: 45 wt% of aluminum, 24 wt% of silicon and 30 wt% of calcium, and the balance of other elements contained in raw materials entering the aluminum-silicon-calcium alloy through refining, and carrying out vacuum distillation (vacuum degree of 20Pa, temperature of 1300 ℃ and time of 5h) on the aluminum-silicon-calcium alloy to obtain metal calcium and the aluminum-silicon alloy, wherein the aluminum-silicon alloy comprises the following components: al50 wt%, Si48 wt%, Ca0.001wt%, the rest is other elements contained in the raw materials entering into the aluminum-silicon-calcium alloy by refining, and the aluminum-silicon alloy is preferably reused as a lithium-containing material lithium extraction reducing agent.
Example 3
Continuously smelting lithium by using lithium hydroxide monohydrate as raw material
The first furnace starts: the method is characterized in that commercially available lithium hydroxide monohydrate is used as a raw material, a mixture of aluminum oxide and calcium oxide is used as an auxiliary agent, and aluminum-silicon alloy is used as a reducing agent. Wherein the purity of the monohydrate lithium hydroxide is more than 98 percent. The purity of the alumina and the calcium oxide is more than 98 percent. The mixture ratio (mass ratio) is as follows: lithium hydroxide monohydrate: alumina: calcium oxide 3:1.5:1.5, uniformly mixing, firstly roasting at 850 ℃ for 60 minutes. Grinding to 60 meshes after the mixture is sintered, adding aluminum-silicon alloy powder with the granularity of 60 meshes and the addition amount of 10 percent (the mass sum of the mixture of lithium hydroxide monohydrate, aluminum oxide and calcium oxide after being roasted), and adding CaF accounting for 2 percent of the mixture2The mixed raw material is obtained and pressed into pellets.
Manually opening a door of the feeding chamber (5), putting pellets made of lithium-containing materials, auxiliaries and reducing agents into a graphite crucible (11), and closing the door of the feeding chamber (5); an isolation valve D (7) is opened through an electric appliance control system (4), and the graphite crucible (11) is moved onto a crucible lifting device (8) through a moving device (6); opening an isolation valve A (16), and lifting the graphite crucible (11) into the induction heating device (2) through a crucible lifting device (8); starting a vacuum unit (14) through an electric appliance control system (4), opening an isolation valve B (15) and an isolation valve C (9), and vacuumizing a discharging chamber (10) and a feeding chamber (5); opening an isolation valve E (18), an isolation valve F (19) and an isolation valve G (20) to vacuumize the reduction chamber (1), the crystallizer (17) and the metal lithium tank (21); starting a water cooling system (13) to feed water into the vacuum unit (14), the reduction chamber (1), the crystallizer (17) and the induction heating device (2) for cooling; starting a heating power supply (3) to heat the induction heating device (2), displaying the vacuum degree and the temperature in an electric appliance control system (4), carrying out reduction reaction, heating the induction heating device (2) to 550 ℃ at the heating rate of 14 ℃/min, keeping the temperature for 50min, and keeping the vacuum degree at 1 Pa; continuously heating to 1150 ℃ at a heating rate of 14 ℃/min, controlling the vacuum degree of a vacuum reactor to 1050Pa until no lithium vapor is generated, keeping the temperature for about 3h, collecting lithium in a crystallizer (17) in a liquid state, connecting the crystallizer (17) with a metal lithium tank (21), simultaneously arranging a graphite filter, enabling the metal lithium tank (20) to contain liquid paraffin, taking down the metal lithium tank (21) from the crystallizer (17) periodically, connecting the metal lithium tank to a glove box filled with high-purity argon, and then opening a valve of the metal lithium tank to obtain a lithium ingot, wherein the purity of the lithium ingot is 99.9%, the recovery rate is 96%, and the current efficiency is 94%;
after the reduction reaction is finished, the graphite crucible (11) is descended through a crucible lifting device (8), an isolation valve A (16) is closed, an isolation valve D (7) is closed, the mobile device (6) is moved to enter the discharging chamber (10), an isolation valve C (9) is closed, and a door of the discharging chamber (10) is opened to break vacuum;
the hydraulic system (12) is connected with the crucible lifting device (8) and controls the crucible lifting device (8) to lift;
the water cooling system (13) is respectively connected with the vacuum unit (14), the reduction chamber (1), the induction heating device (2) and the crystallizer (17).
The second furnace starts: closing an isolation valve D (7), manually opening a feeding chamber (5), filling a graphite crucible (11) with materials, closing a door of the feeding chamber (5), vacuumizing the feeding chamber (5) to a process-required vacuum degree, opening the isolation valve D (7), moving the graphite crucible (11) to a crucible lifting device (8) through a moving device (6), opening an isolation valve A (16), lifting the graphite crucible (11) into an induction heating device (2) through the crucible lifting device (8), wherein the vacuum degree and the temperature of a reduction chamber (1) meet the process requirements of a reduction reaction, the reduction reaction starts to be carried out, and lithium can be collected in a crystallizer (17) in a liquid form and flows into a metal lithium tank (21). After the reaction is completed, the graphite crucible (11) descends through a crucible lifting device (8), an isolation valve A (16) is closed, an isolation valve C (9) is opened, a mobile device (6) enters a discharge chamber (10), the isolation valve C (9) is closed, a door of the discharge chamber (10) is opened, the graphite crucible (11) is taken out, residues of the graphite crucible (11) are cleaned, the door of the discharge chamber (10) is closed, the discharge chamber (10) is vacuumized to reach the vacuum degree required by the process, and the processes are circulated in sequence.
The lithium extraction tailings obtained from the discharging chamber (10) comprise CaO.7Al2O3(s) (slag), 2 CaO. SiO2(s)， CaO(s)·SiO2(s) and Al2O3·2SiO2The chemical components are as follows: 50 wt% of calcium oxide, 15 wt% of aluminum oxide, 30 wt% of silicon oxide and the balance of other oxides.
Grinding the lithium extraction tailings obtained from the discharging chamber (10) to obtain powder with the granularity of 100-120 meshes, mixing the lithium extraction tailings powder, a reducing agent, a binder and water, briquetting under 30MPa, and dehydrating at 100 ℃ until the mass percentage of water in the pellets is not more than 1%, wherein the pellets comprise the following components in percentage by weight: 55% of lithium-extracted tailings powder of a lithium-containing material, 35% of a reducing agent, 6% of a binder and 4% of water, wherein the reducing agent comprises bituminous coal and petroleum coke (the mass ratio is 6: 4), the fixed carbon content of the bituminous coal is 60%, the fixed carbon content of the petroleum coke is 90%, the sum of the fixed carbon contents of the bituminous coal and the petroleum coke is 95% of the theoretical requirement for complete reduction reaction, the pellets are subjected to reduction reaction at 1650 ℃ for 2.5h to obtain aluminum-silicon-calcium alloy liquid and scum, the aluminum-silicon-calcium alloy liquid is discharged from an aluminum outlet at regular intervals of 3h, the scum is used for preparing a lithium metal auxiliary agent from the lithium-extracted tailings of the lithium-containing material, the yield of the scum is 5%, and the scum mainly comprises 40 wt% of calcium oxide, 25 wt% of aluminum oxide, 34 wt; mixing the aluminum-silicon-calcium alloy liquid with a refining agent, carrying out vacuum filtration to remove slag, mixing and diluting, and then carrying out ingot casting to obtain an aluminum-silicon-calcium alloy, wherein the aluminum-silicon-calcium alloy comprises the following components: 40 wt% of aluminum, 30 wt% of silicon and 28 wt% of calcium, and the balance of other elements contained in raw materials entering the aluminum-silicon-calcium alloy through refining, and carrying out vacuum distillation on the aluminum-silicon-calcium alloy (the vacuum degree is 10Pa, the temperature is 1200 ℃, and the time is 4 hours) to obtain metal calcium and the aluminum-silicon alloy, wherein the aluminum-silicon alloy comprises the following components: al50 wt%, Si49 wt%, Ca0.001wt%, the rest is other elements contained in the raw materials entering into the aluminum-silicon-calcium alloy by refining, and the aluminum-silicon alloy is preferably reused as a lithium-containing material lithium extraction reducing agent.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (5)
1. A lithium-containing material continuous lithium smelting device is characterized by comprising: the device comprises a reduction chamber (1), a graphite crucible (11), an electric appliance control system (4), a vacuum unit (14), a hydraulic system (12) and a water cooling system (13);
the bottom of the reduction chamber (1) is provided with an induction heating device (2), the induction heating device (2) is connected with a heating power supply (3), a crucible lifting device (8) is arranged below the induction heating device (2), an isolation valve A (16) is arranged between the induction heating device (2) and the crucible lifting device (8), the reduction chamber (1) is connected with a vacuum unit (14) through an isolation valve E (18), the reduction chamber (1) is communicated with a crystallizer (17), the crystallizer (17) is connected with a metal lithium tank (21) through an isolation valve F (19), and the crystallizer (17) is connected with the vacuum unit (14) through an isolation valve G (20);
a feeding chamber (5) and a discharging chamber (10) are respectively arranged on two sides of the crucible lifting device (8), an isolating valve D (7) is arranged between the crucible lifting device (8) and the feeding chamber (5), and an isolating valve C (9) is arranged between the crucible lifting device (8) and the discharging chamber (10); the vacuum unit (14) is communicated with the discharge chamber (10) through an isolation valve B (15);
the graphite crucible (11) moves among the feeding chamber (5), the crucible lifting device (8) and the discharging chamber (10) through the moving device (6);
the electric appliance control system (4) is respectively connected with the reduction chamber (1), the feeding chamber (5), the discharging chamber (10), the crystallizer (17), the isolation valve A (16), the isolation valve B (15), the isolation valve C (9), the isolation valve D (7), the isolation valve E (18), the isolation valve F (19) and the isolation valve G (20), and the electric appliance control system (4) comprises a temperature measuring device and a vacuum detecting device and displays temperature and vacuum degree;
the hydraulic system (12) is connected with the crucible lifting device (8) and controls the crucible lifting device (8) to lift;
and the water cooling system (13) is respectively connected with the reduction chamber (1), the induction heating device (2), the vacuum unit (14) and the crystallizer (17).
2. The device for continuously refining lithium from lithium-containing materials according to claim 1, wherein the reduction chamber (1) has a double-layer water-feeding cooling structure.
3. The continuous lithium-making device of lithium-containing material according to claim 1, characterized in that the metallic lithium tank (21) contains liquid paraffin.
4. The device for continuously refining lithium from lithium-containing materials according to claim 1, characterized in that a graphite filter is arranged in the crystallizer (17).
5. The continuous lithium-making device of lithium-containing material according to claim 1, characterized in that the induction heating device (2) is an electromagnetic induction heating device.
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| CN111187924A (en) * | 2020-03-06 | 2020-05-22 | 北京欧菲金太科技有限责任公司 | Device and method for continuously refining lithium from lithium-containing material |
| CN111187924B (en) * | 2020-03-06 | 2024-04-12 | 北京欧菲金太科技有限责任公司 | Continuous lithium smelting device and method for lithium-containing material |
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| CN111187924A (en) * | 2020-03-06 | 2020-05-22 | 北京欧菲金太科技有限责任公司 | Device and method for continuously refining lithium from lithium-containing material |
| CN111187924B (en) * | 2020-03-06 | 2024-04-12 | 北京欧菲金太科技有限责任公司 | Continuous lithium smelting device and method for lithium-containing material |
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