CN217351493U - Continuous production system for producing magnesium metal - Google Patents
Continuous production system for producing magnesium metal Download PDFInfo
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- CN217351493U CN217351493U CN202220469390.7U CN202220469390U CN217351493U CN 217351493 U CN217351493 U CN 217351493U CN 202220469390 U CN202220469390 U CN 202220469390U CN 217351493 U CN217351493 U CN 217351493U
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Abstract
The utility model belongs to the technical field of non ferrous metal metallurgy, concretely relates to continuous production system of production magnesium metal. The utility model provides a continuous production system of production metal magnesium, include: the reaction furnace is provided with a plurality of feed inlets, a gas outlet and a slag discharge port; the discharge hole of the raw material and reducing agent conveyor is communicated with the feed inlet of the reaction furnace; and the gas outlet of the gas storage container is communicated with the feed inlet of the reaction furnace. The reaction furnace is a closed normal-pressure electric furnace. The utility model discloses a continuous production system does not need vacuum apparatus, and production technology simplifies, can continuous production magnesium metal.
Description
Technical Field
The utility model belongs to the technical field of non ferrous metal metallurgy, concretely relates to continuous production system of production metal magnesium.
Background
The magnesium has the advantages of light weight, abundant reserves, high specific strength and specific rigidity of magnesium alloy, excellent heat conduction and electric conductivity, good damping and shock absorption and electromagnetic shielding performance, easy processing and forming, easy recovery of waste materials and the like, and is widely applied to the fields of aerospace, military, transportation and the like.
Currently, the industrial production of magnesium mainly includes an electrolytic process and a silicothermic process (Pidgeon process). The electrolysis method generally uses anhydrous magnesium chloride as a raw material, and direct current is introduced from a cathode and an anode of an electrolytic cell containing the magnesium chloride, so that the magnesium chloride is electrolyzed in a molten state, the cathode obtains metal magnesium, and the anode releases chlorine. The process has the disadvantages of complex dehydration process of the magnesium chloride hexahydrate, great treatment difficulty of waste gas, waste water and waste residue, serious corrosion of production equipment and high production cost.
The silicothermic process for smelting magnesium is widely applied due to short process, quick effect, convenient raw materials, flexible production and convenient operation. The silicothermic process uses ferrosilicon as a reducing agent, reduces calcined dolomite at a certain vacuum degree and temperature, reduces magnesium into steam, and then condenses to obtain metal magnesium. The silicothermic magnesium smelting method mainly has the following problems: 1) the requirement on raw materials is high, and only dolomite mineral aggregate can be adopted at present; 2) ferrosilicon used as a reducing agent has high cost; 3) the reduction pot has short service life and high production cost; 4) the reduction reaction requires vacuum conditions and can only be carried out discontinuously; 5) the magnesium ratio of the material is up to 6-7: 1, the energy waste and the environmental pollution are serious, and the increase of the magnesium yield is at the cost of sacrificing the environment and resources; 6) the raw materials and the reducing agent react in a solid state, so the reaction speed is slow and the reaction time is long. For this reason, better methods and apparatus for producing magnesium metal have been sought.
Chinese patent CN204311115U discloses a semi-continuous magnesium-smelting reduction device, which comprises a reaction device, a metallic magnesium collector, a slag discharge device, a feeding device and a heat exchange device, wherein the metallic magnesium is generated by using concentrated sunlight or laser to directly irradiate the surface of a reactant through a lens and carrying out reduction reaction, so that continuous production cannot be really realized, the production speed is slow, and the benefit is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a continuous production system for producing magnesium metal, which has few links, short flow path and continuous and uninterrupted whole production system; and the production speed is high, the benefit is high, and the mass production of the metal magnesium is easy.
In order to solve the technical problem, the utility model provides a continuous production system of production magnesium metal, include:
the reaction furnace 8 is a normal-pressure closed electric furnace, and the reaction furnace 8 is provided with a plurality of feed inlets, a gas outlet and a slag discharge port 16;
the raw material and reducing agent conveyor 2 is arranged, and a discharge hole of the raw material and reducing agent conveyor 2 is communicated with a feed hole of the reaction furnace 8;
and a gas storage container 14, wherein a gas outlet of the gas storage container 14 is communicated with a feed inlet of the reaction furnace 8.
Preferably, the device also comprises a pneumatic feeding device 5, wherein the pneumatic feeding device 5 is provided with a feeding hole, a gas inlet and a discharging hole;
the feed inlet of the pneumatic feeding device 5 is communicated with the discharge outlet of the raw material and reducing agent conveyor 2;
the gas inlet of the pneumatic feeding device 5 is communicated with the gas outlet of the gas storage container 14;
and the discharge hole of the pneumatic feeding device 5 is communicated with the feed inlet of the reaction furnace 8 through a closed feeding pipeline 6.
Preferably, the reaction furnace 8 is provided with a tubular electrode 7; the closed feeding pipeline 6 is sleeved in the tubular electrode 7, and one end of the tubular electrode 7 extends into the reaction furnace 8. The tubular electrode 7 is one of the feed openings of the reactor 8, and is a current path for feeding electric energy into the reactor 8.
Preferably, the device also comprises a gas-liquid condensation separator 10, the gas-liquid condensation separator is called a condenser for short, and the gas-liquid condensation separator 10 is provided with a feeding port, a gas outlet and a liquid outlet;
and a feeding port of the gas-liquid condensation separator 10 is communicated with a gas outlet of the reaction furnace 8.
Preferably, the casting machine also comprises an ingot casting machine 11; and a feeding port of the ingot casting machine 11 is communicated with a liquid outlet of the gas-liquid condensation separator 10.
Preferably, further comprises a purification and refining device 18; a feed inlet of the purification refining device 18 is communicated with a liquid outlet of the condensed gas-liquid separator 10, and a discharge outlet of the purification refining device 18 is communicated with a feed inlet of the ingot casting machine 11.
Preferably, a gas cooling filter device 12 is also included; the feeding port of the gas cooling and filtering device 12 is communicated with the gas outlet of the gas-liquid condensation separator 10, and the gas outlet of the gas cooling and filtering device 12 is communicated with the gas inlet of the gas storage container 14.
Preferably, the method further comprises the following steps: the device comprises a first metering feeder 1 and a second metering feeder 20, wherein the first metering feeder 1 and the second metering feeder 20 are both provided with a feeding hole and a discharging hole, and the discharging hole of the first metering feeder 1 and the discharging hole of the second metering feeder 1 are respectively communicated with a raw material and reducing agent conveyor 2.
Preferably, the method further comprises the following steps: the mixing material bin 3 is provided with a feeding hole and a discharging hole;
the feed inlet of blending bunker 3 with the discharge gate intercommunication of raw materials and reductant conveyer 2, the discharge gate of blending bunker 3 with the feed inlet intercommunication of pneumatic material conveying device 5.
Preferably, the method further comprises the following steps: the third metering feeder 4 is provided with a feeding hole and a discharging hole;
the feed inlet of the third metering feeder 4 is communicated with the discharge outlet of the mixing bin 3;
and the discharge hole of the third metering feeder 4 is communicated with the feed inlet of the pneumatic feeding device 5.
The utility model provides a continuous production system of production metal magnesium, include: the reaction furnace 8 is a normal-pressure closed electric furnace, and the reaction furnace 8 is provided with a plurality of feed inlets, a gas outlet and a slag discharge port; the discharge hole of the raw material and reducing agent conveyor 2 is communicated with the feed hole of the reaction furnace 8; and a gas storage container 14, wherein a gas outlet of the gas storage container 14 is communicated with a feed inlet of the reaction furnace 8. The utility model discloses a continuous production system does not need vacuum apparatus, and production technology simplifies, can continuous production magnesium metal.
The utility model provides a continuous production system of production metal magnesium's whole production system link is few, and the flow is short, and is incessant in succession. The production speed is high, the benefit is high, and the mass production of the metal magnesium is easy.
Drawings
FIG. 1 is a schematic view of a continuous production system provided by an embodiment of the present invention;
FIG. 2 is a schematic view of a continuous production system with a purification and refining apparatus according to an embodiment of the present invention;
1-a first metering feeder, 2-a raw material and reducing agent conveyor, 3-a mixing bin, 4-a third metering feeder, 5-a pneumatic feeding device, 6-a closed feeding pipeline, 7-a tubular electrode, 8-a reaction furnace, 9-a connecting pipeline, 10-a cool condensate gas-liquid separator, 11-an ingot casting machine, 12-a gas cooling and filtering device, 13-a compressor, 14-a gas storage container, 15-a pressure regulating valve, 16-a slag discharge port, 17-a slag receiving container, 18-a purification and refining device, 19-a power grid, 20-a second metering feeder, 21-a power conversion device, 22-a short-net bus, 23-a first raw material storage container and 24-a second raw material storage container.
Detailed Description
The utility model provides a continuous production system of production metal magnesium, include:
the reaction furnace 8 is a normal-pressure closed electric furnace, and the reaction furnace 8 is provided with a plurality of feed inlets, a gas outlet and a slag discharge port;
the discharge hole of the raw material and reducing agent conveyor 2 is communicated with the feed hole of the reaction furnace 8;
and a gas storage container 14, wherein a gas outlet of the gas storage container 14 is communicated with a feed inlet of the reaction furnace 8.
The utility model provides a continuous production system preferably still includes first raw materials storage container 23 the utility model discloses in, first raw materials storage container 23 is provided with the discharge gate. In the present invention, the first material storage container is used for storing the magnesium oxide powder.
The utility model provides a continuous production system is preferred still to include first measurement batcher 1 the utility model discloses in, first measurement batcher 1 is provided with feed inlet and discharge gate. In the utility model, the first metering feeder 1 is used for metering the feeding amount of the magnesium oxide powder.
The utility model discloses in, the feed inlet of first metering feeder 1 with the discharge gate intercommunication of first raw materials storage container 23, the discharge gate of first metering feeder 1 with raw materials and reducing agent conveyer 2 intercommunication.
As a specific embodiment of the utility model, follow raw materials and reducing agent conveyer's pay-off direction, first metering feeder 1 set up in raw materials and reducing agent conveyer's top.
The utility model provides a continuous production system preferably still includes second raw material storage container 24 the utility model discloses in, second raw material storage container 24 is provided with the discharge gate. In the present invention, the second raw material storage container is used for storing aluminum particles.
The utility model provides a continuous production system is preferred still to include second measurement batcher 20 the utility model discloses in, second measurement batcher 20 is provided with feed inlet and discharge gate. In the present invention, the second metering feeder 20 is used for metering the feeding amount of the aluminum particles.
The utility model discloses in, the feed inlet of second metering feeder 20 with the discharge gate intercommunication of second raw materials storage container 24, the discharge gate of second metering feeder 20 with raw materials and reducing agent conveyer 2 intercommunication.
As a specific embodiment of the present invention, along the feeding direction of the raw material and reducing agent conveyor, the second metering feeder 20 is disposed above the raw material and reducing agent conveyor.
The utility model provides a continuous production system includes raw materials and reductant conveyer 2, raw materials and reductant conveyer 2's discharge gate with the feed inlet intercommunication of reacting furnace 8.
In the present invention, the raw material and reducing agent conveyer 2 is used for conveying the raw material of the magnesium oxide powder and the reducing agent of the aluminum particles.
As an embodiment of the present invention, the raw material and reducing agent conveyor 2 is a screw raw material and reducing agent conveyor.
The utility model provides a continuous production system preferably still includes blending bunker 3 the utility model discloses in, blending bunker 3 is provided with feed inlet and discharge gate.
The utility model discloses in, blending bunker 3 is used for the mixture of temporary storage magnesium oxide powder and Al granule.
The utility model discloses in, the feed inlet of blending bunker with the discharge gate intercommunication of raw materials and reductant conveyer 2.
The utility model provides a continuous production system preferably still includes third metering feeder 4. The utility model discloses in, third metering feeder 4 is provided with feed inlet and discharge gate.
In the present invention, the third metering feeder 4 is used for metering the feeding amount of the magnesium oxide powder and the aluminum particle mixture.
The utility model discloses in, the feed inlet of third metering feeder 4 with the discharge gate intercommunication of blending bunker 3.
The utility model provides a continuous production system is preferred still to include pneumatic material conveying device 5, pneumatic material conveying device 5 is provided with feed inlet, gas inlet and discharge gate.
In the utility model discloses, the preferred feed inlet of pneumatic material conveying device 5 with the discharge gate of third metering feeder 4 communicates.
In the present invention, the gas inlet of the pneumatic feeder 5 is preferably communicated with the gas outlet of the gas storage container 14.
As a specific implementation of the present invention, the pipeline of the gas inlet of the pneumatic feeding device 5 is close to the one end of the pneumatic feeding device 5 is provided with a pressure regulating valve 15.
In the utility model, the discharge port of the pneumatic feeding device 5 is preferably communicated with the feed port of the reaction furnace 8.
As a specific embodiment of the utility model, the discharge hole of the pneumatic feeding device 5 is communicated with the feed inlet of the reaction furnace 8 through a closed feeding pipeline 6.
As a specific embodiment of the present invention, the airtight feeding pipe 6 is an airtight flexible feeding pipe.
As a specific embodiment of the present invention, the reaction furnace 8 is a closed atmospheric electric furnace, and is provided with a tubular electrode 7; the tubular electrode 7 is both a current path for feeding electric energy into the reaction furnace 8 and one of the feed ports of the reaction furnace 8. The closed feeding pipeline 6 is sleeved at one end of the tubular electrode 7, and the other end of the tubular electrode 7 extends into the reaction furnace 8.
As a specific embodiment of the present invention, the mixture of magnesium oxide powder and aluminum particles in the mixing bunker 3 enters the pneumatic feeder 5 via the third metering feeder, and after the gas in the gas storage container 14 enters the pneumatic feeder 5 through the pressure regulating valve 15 and is mixed, the mixture is sent into the reaction zone of the reaction furnace 8 through the central pipeline of the electrode 7 by using the gas as the carrier gas.
The utility model provides a continuous production system includes reacting furnace 8, reacting furnace 8 is provided with a plurality of feed inlets, gas outlet and row's cinder notch 16.
As a specific implementation of the present invention, the reaction furnace 8 is specifically a normal pressure closed electric furnace.
As a specific embodiment of the present invention, the reaction furnace 8 is an ac arc furnace.
As a specific embodiment of the present invention, the reaction furnace 8 is a dc arc furnace.
As a specific implementation of the present invention, the reaction furnace 8 is a dc furnace with a bottom electrode.
As a specific implementation of the present invention, the reaction furnace 8 is a direct current furnace without a bottom electrode.
As a specific embodiment of the utility model, the reaction furnace comprises a cold water furnace shell and a molten bath wrapped by the cold water furnace shell.
As a specific embodiment of the utility model, the cold water stove outer covering comprises a cold water stove lateral wall, a cold water stove cover and a cold water stove bottom.
As a specific embodiment of the utility model, the furnace lining material of the molten bath is made of corundum refractory material.
As a specific embodiment of the utility model, the furnace lining material of the melting bath is made of magnesium refractory material.
As a specific embodiment of the utility model, the furnace lining material of the molten bath is made of magnesia alumina spinel refractory material.
As a specific embodiment of the present invention, the material of the molten pool is graphite refractory.
As an embodiment of the present invention, the material constituting the molten pool is a carbonaceous refractory material.
In the present invention, the reaction furnace 8 is preferably provided with a graphite electrode, and the graphite electrode is preferably a solid graphite electrode or a hollow graphite electrode.
As a specific embodiment of the present invention, the reaction furnace 8 is preferably provided with a tubular electrode 7, and the tubular electrode 7 is a hollow tubular graphite electrode.
As a specific embodiment of the utility model, the closed feeding pipeline 6 is sleeved on one end of the electrode 7 with the central pipeline, and the other end of the tubular electrode 7 extends into the reaction furnace 8.
In the present invention, the electrode central pipe 7 is a main feeding pipe for feeding the powder material and the reducing agent into the reactor 8, and is a conductive passage for guiding the current.
As a specific implementation of the present invention, the electrode 7 with the central pipe is located above the molten liquid level in the reaction furnace 8, and the electrode 7 discharges the molten liquid surface in the molten pool of the reaction furnace 8 after being electrified to form an electric arc, which heats the molten liquid.
As a specific implementation of the present invention, the central pipeline of the electrode 7 is the main feeding pipe of the reaction furnace 8, the reaction furnace 8 is further provided with a plurality of auxiliary feeding pipes, the auxiliary feeding pipes are used for adding the mixture of aluminum particles or magnesium oxide powder and aluminum particles into the reaction furnace 8.
The utility model provides a continuous production system is preferred still including connecing sediment container 17, connect sediment container 17 to be used for connecing greatly and transport the follow the slag after the reaction that the row's cinder notch 16 of reacting furnace 8 discharged out. The slag after the reaction is the by-product of the smelting reduction, namely the fused corundum or the fused magnesia-alumina spinel.
As a specific embodiment of the present invention, the slag receiving container 17 is a slag ladle.
As a specific embodiment of the present invention, the slag receiving container 17 is a slag pot.
The utility model provides a continuous production system preferably still includes electric wire netting 19, electric wire netting 19 is connected with power conversion equipment 21 electricity.
In the present invention, the power grid 19 is used for supplying power to the power varying device 21.
The utility model provides a continuous production system is preferred still to include power conversion equipment 21, power conversion equipment 21 through the short net generating line with electrode 7 stretches out the one end contact of 8 outsides of reacting furnace is connected.
In the present invention, after the electric energy transmitted from the power grid 19 is transformed/converted by the power conversion device 21, the short-net bus bar 22 is transmitted to the electrode 7, the electrode 7 extends to the end of one end of the molten pool in the reaction furnace 8 and the arc discharge is formed between the molten pools.
The utility model provides a continuous production system is preferred still to include condensation vapour and liquid separator 10, condensation vapour and liquid separator 10 is provided with the pan feeding mouth, gas outlet and liquid outlet, condensation vapour and liquid separator 10's pan feeding mouth with the gas outlet intercommunication of reacting furnace 8.
As a specific implementation of the present invention, the top of the condensed gas-liquid separator 10 is provided with a gas outlet, and the bottom or the side bottom of the condensed gas-liquid separator 10 is provided with a liquid outlet.
As a specific embodiment of the present invention, the condensed gas-liquid separator 10 is communicated with the reaction furnace 8 through a connecting pipe 9.
As a specific embodiment of the present invention, the connecting pipe 9 is a heat-insulating airtight connecting pipe.
In the present invention, in the molten bath of the reaction furnace 8, magnesium oxide powder and aluminum particles are subjected to a reduction reaction to obtain Mg vapor. The Mg vapor protective gas enters a connecting pipe 9 from a gas outlet of the reaction furnace 8, and enters the condensed gas-liquid separator 10 through the connecting pipe 9. In the condensed gas-liquid separator 10, the Mg vapor is condensed into a liquid state and separated from the protective gas.
The utility model provides a continuous production system preferably still includes gas cooling filter equipment 12, gas cooling filter equipment 12 the entry with the gas outlet intercommunication of condensation vapour and liquid separator 10, gas cooling filter equipment 12 the gas outlet with gas storage container 14's gas inlet intercommunication.
The utility model discloses in the condensation vapour and liquid separator 10 with protective gas after the separation of liquid Mg by the gas outlet entering of condensation vapour and liquid separator 10 gas cooling filter equipment 12 cools off and purifies.
The utility model provides a continuous production system preferably still includes ingot casting machine 11. And a feeding port of the ingot casting machine 11 is communicated with a liquid outlet of the condensed gas-liquid separator 10.
As a specific embodiment of the present invention, an ingot casting mold is disposed in the ingot casting machine 11.
As a specific embodiment of the present invention, the ingot mold is a rod-shaped grinding tool, and the ingot casting machine 11 obtains a magnesium rod product.
As a specific embodiment of the present invention, the ingot casting mold is an ingot mold, and the ingot casting machine 11 obtains a magnesium ingot.
The utility model provides a continuous production system is preferred still includes purification refining plant 18, purification refining plant 18 the pan feeding mouth with the liquid outlet intercommunication of condensation vapour and liquid separator 10, purification refining plant 18 the discharge gate with the pan feeding mouth intercommunication of ingot casting machine 11.
The utility model discloses in, purification refining plant 18 is used for right the liquid Mg that the condensation obtained carries out the purification and refines, obtains refined Mg liquid.
The utility model provides a continuous production system preferably still includes compressor 13, the gas inlet of compressor with the gas outlet intercommunication of gas cooling filter equipment 12, the gas outlet of compressor 13 with the gas inlet intercommunication of gas storage container 14.
In the present invention, the compressor 13 is used for compressing the purified protection gas obtained from the gas outlet of the gas cooling and filtering device, and storing the compressed protection gas in the gas storage container 14 for recycling.
The utility model discloses use above-mentioned continuous production system to prepare magnesium metal's concrete method preferred: the magnesium oxide powder is discharged into the first raw material storage container 23, and the aluminum particles are discharged into the second raw material storage container 24. Starting the raw material and reducing agent conveyor 2, continuously discharging the magnesium oxide powder in the first raw material storage container into the raw material and reducing agent conveyor 2 through the first metering feeder 1, and continuously discharging the aluminum granules in the second raw material storage container into the raw material and reducing agent conveyor 2 through the second metering feeder 20; the raw material and reducing agent conveyer 2 continuously conveys the magnesium oxide powder and the aluminum particles into a mixing bin 3. The mixture in the mixing bin 3 is discharged into a gas feeding device 5 through a third metering feeder 4, meanwhile, gas in a carrier gas storage container 14 is introduced into the pneumatic feeding device 5 through a pressure regulating valve 15 to be used as a carrier, the mixture is conveyed to a molten pool of a reaction furnace 8 through a closed feeding pipeline 6 and a tubular electrode 7, wherein the reaction furnace 8 is a closed electric furnace, the reaction furnace 8 is provided with the tubular electrode 7, the closed feeding pipeline 6 is sleeved on the tubular electrode 7, the tubular electrode 7 is electrically connected with a short net bus 22 in a contact manner, electric energy provided by a power grid 19 is subjected to pressure change/current change through an electric power exchange device 21 and then is conveyed to the tubular electrode 7 through the short net bus 22, arc discharge is formed on the surface of the molten pool at one end of the electrode 7 extending into the reaction furnace 8, the temperature of the molten pool for heating the reaction furnace 8 is maintained above 2200 ℃, magnesium oxide powder and aluminum particles are melted into liquid in the molten pool, and carrying out reduction reaction to obtain Mg vapor and a residue melt after the reaction. The Mg vapour is fed into the cooler 10 together with the continuously introduced protective gas in the bath. Condensing the Mg vapor in a gas-liquid condensation separator 10 to obtain liquid Mg, and directly feeding the liquid Mg into an ingot casting machine 11 for casting to obtain a magnesium rod or a magnesium ingot product; or refining the liquid Mg by the refining device 18 and then casting the refined magnesium rod or the refined magnesium ingot in the ingot casting machine 11 to obtain the refined magnesium rod or the refined magnesium ingot product. After the residual melt after reaction in the reaction furnace 8 is accumulated to a certain amount, the residual melt is discharged into a slag receiving container 17 through a slag discharge port 16 of the reaction furnace 8 and is conveyed to a slag treatment field for treatment. The gas separated by the gas-liquid condensation separator 10 enters a gas cooling and filtering device 12 for treatment, is compressed by a compressor 13 and then enters a gas storage container 14 for storage and recycling.
In order to further illustrate the present invention, the following embodiments are described in detail, but they should not be construed as limiting the scope of the present invention.
Example 1
Discharging magnesium oxide powder with the grain diameter of less than or equal to 0.3mm and the MgO content of more than or equal to 97 wt% into a first raw material storage container 23, and discharging aluminum particles with the grain diameter of 5mm and the Al content of more than or equal to 95 wt% into a second raw material storage container 24. Starting the raw material and reducing agent conveyor 2, continuously discharging the magnesium oxide powder in a first raw material storage container into the raw material and reducing agent conveyor 2 through a first metering feeder 1, continuously discharging the aluminum granules in a second raw material storage container into the raw material and reducing agent conveyor 2 through a second metering feeder 20, wherein the mass ratio of the aluminum granules to the magnesium oxide powder is 0.45: 1; the raw material and reducing agent conveyor 2 continuously conveys the magnesium oxide powder and the aluminum particles into the mixing bin 3, and the mixture in the mixing bin 3 is discharged through the third metering feeder 4To a gas feeding device, and simultaneously, the gas in a carrier gas storage container 14 is introduced into a pneumatic feeding device 5 as a carrier through a pressure regulating valve 15, and the mixed material is conveyed to a molten pool of a reaction furnace 8 through a closed feeding pipeline 6 and a tubular electrode 7. Wherein the reaction furnace 8 is a sealed electric furnace, the reaction furnace 8 is provided with a tubular electrode 7, and the sealed feeding pipeline 6 is sleeved on the tubular electrode 7. The tubular electrode 7 is electrically connected with the short network bus 22 in a contact way, electric energy provided by the power grid 19 is transmitted to the tubular electrode 7 from the short network bus 22 after being subjected to voltage transformation/current transformation through the power exchange device 21, arc discharge is formed on a molten pool at one end of the tubular electrode 7 extending into the reaction furnace 8, the temperature of the molten pool for heating the reaction furnace 8 is above 2200 ℃, magnesium oxide powder and aluminum particles are melted to form liquid, and reduction reaction is carried out under normal pressure. The gaseous Mg obtained during the melting reduction reaction and the molten Al2O 3. The Mg vapor and the carrier gas enter the gas-liquid condensation separator 10 together. The Mg vapor is condensed into liquid Mg in the gas-liquid condensation separator 10. Directly feeding the liquid Mg into an ingot casting machine 11 for casting to obtain a magnesium rod or a magnesium ingot product; or refining the liquid Mg by the refining device 18 and then casting the refined magnesium rod or the refined magnesium ingot in the ingot casting machine 11 to obtain the refined magnesium rod or the refined magnesium ingot product. Molten Al in the reactor 8 2 O 3 After the certain amount of the slag is accumulated, the slag is discharged into a slag receiving container 17 through a slag discharge port 16 of the reaction furnace 8 and is conveyed to a slag disposal field for disposal. Al in molten state 2 O 3 And cooling to obtain the fused corundum product. The carrier gas separated by the gas-liquid condensation separator 10 enters a gas cooling and filtering device 12 for treatment, is compressed by a compressor 13 and then enters a gas storage container 14 for storage and cyclic utilization.
Example 2
Discharging magnesium oxide powder with the grain diameter of less than or equal to 0.3mm and the MgO content of more than or equal to 97 wt% into a first raw material storage container 23, and discharging aluminum particles with the grain diameter of 5mm and the Al content of more than or equal to 95 wt% into a second raw material storage container 24. Starting the raw material and reducing agent conveyor 2, continuously discharging the magnesium oxide powder in a first raw material storage container into the raw material and reducing agent conveyor 2 through a first metering feeder 1, continuously discharging the aluminum granules in a second raw material storage container into the raw material and reducing agent conveyor 2 through a second metering feeder 20, wherein the mass ratio of the aluminum granules to the magnesium oxide powder is 0.3: 1; the raw material and reducing agent conveyor 2 continuously conveys magnesium oxide powder and aluminum particles into the mixing bin 3, the mixture in the mixing bin 3 is discharged into the gas feeding device through the third metering feeder 4, meanwhile, gas in the carrier gas storage container 14 is introduced into the pneumatic feeding device 5 through the pressure regulating valve 15 to serve as a carrier, and the conveyed mixture is conveyed into a molten pool of the reaction furnace 8 through the closed feeding pipeline 6 and the tubular electrode 7. Wherein the reaction furnace 8 is a sealed electric furnace, the reaction furnace 8 is provided with a tubular electrode 7, and the sealed feeding pipeline 6 is sleeved on the tubular electrode 7 with a central pipeline. The tubular electrode 7 is in contact and electric connection with a short network bus 22, electric energy provided by a power grid 19 is transmitted to the tubular electrode 7 through the short network bus 22 after being subjected to voltage transformation/current transformation through an electric power exchange device 21, arc discharge is formed on a molten pool at one end of the tubular electrode 7 extending into the reaction furnace 8, the temperature of the molten pool for heating the reaction furnace 8 is above 2200 ℃, magnesium oxide powder and aluminum particles are melted to form liquid, and reduction reaction is carried out under normal pressure. And the gaseous Mg and the molten Al2O3MgO obtained in the melting reduction reaction. The Mg vapor and the carrier gas enter the gas-liquid condensation separator 10 together. The Mg vapor is condensed into liquid Mg in the gas-liquid condensation separator 10, and separated from the carrier gas. Directly feeding the liquid Mg into an ingot casting machine 11 for casting to obtain a magnesium rod or a magnesium ingot product; or refining the liquid Mg by the refining device 18 and then casting the refined magnesium rod or the refined magnesium ingot in the ingot casting machine 11 to obtain the refined magnesium rod or the refined magnesium ingot product. After a certain amount of molten Al2O3MgO is accumulated in the reaction furnace 8, the molten Al2O3MgO is discharged into a slag receiving container 17 through a slag discharge port 16 of the reaction furnace 8 and is conveyed to a slag treatment field for treatment. And cooling the molten Al2O3MgO to obtain the fused magnesia-alumina spinel product. The carrier gas separated by the gas-liquid condensation separator 10 enters a gas cooling and filtering device 12 for treatment, is compressed by a compressor 13 and then enters a gas storage container 14 for storage and recycling.
Although the above embodiments have been described in detail, it is only a part of the embodiments of the present invention, rather than all embodiments, and other embodiments can be obtained without inventive step according to the present embodiments.
Claims (10)
1. A continuous production system for producing magnesium metal, comprising:
the reaction furnace (8) is a normal-pressure closed electric furnace, and the reaction furnace (8) is provided with a plurality of feed inlets, a gas outlet and a slag discharge port (16);
the discharge hole of the raw material and reducing agent conveyor (2) is communicated with the feed hole of the reaction furnace (8);
and the gas outlet of the gas storage container (14) is communicated with the feed inlet of the reaction furnace (8).
2. The continuous production system according to claim 1, further comprising a pneumatic feeding device (5), said pneumatic feeding device (5) being provided with a feed inlet, a gas inlet and a discharge outlet;
the feed inlet of the pneumatic feeding device (5) is communicated with the discharge outlet of the raw material and reducing agent conveyor (2);
the gas inlet of the pneumatic feeding device (5) is communicated with the gas outlet of the gas storage container (14);
the discharge hole of the pneumatic feeding device (5) is communicated with the feed inlet of the reaction furnace (8) through a closed feeding pipeline (6).
3. A continuous production system according to claim 2, wherein the reaction furnace (8) is provided with a tubular electrode (7); the closed feeding pipeline (6) is sleeved in the tubular electrode (7), and one end of the tubular electrode (7) extends into the reaction furnace (8);
the tubular electrode (7) is a current channel for feeding electric energy into the reaction furnace (8) and is also one of the feed inlets of the reaction furnace (8).
4. The continuous production system according to claim 1, further comprising a gas-liquid condensation separator (10), the gas-liquid condensation separator (10) being provided with a feed inlet, a gas outlet and a liquid outlet;
and a feeding port of the gas-liquid condensation separator (10) is communicated with a gas outlet of the reaction furnace (8).
5. The continuous production system according to claim 4, further comprising an ingot casting machine (11); and a feeding port of the ingot casting machine (11) is communicated with a liquid outlet of the gas-liquid condensation separator (10).
6. The continuous production system according to claim 5, further comprising a purification and refining device (18); and a feed inlet of the purification refining device (18) is communicated with a liquid outlet of the gas-liquid condensation separator (10), and a discharge outlet of the purification refining device (18) is communicated with a feed inlet of the ingot casting machine (11).
7. The continuous production system according to claim 4, further comprising a gas-cooled filtering device (12); and a feeding port of the gas cooling and filtering device (12) is communicated with a gas outlet of the gas-liquid condensation separator (10), and a gas outlet of the gas cooling and filtering device (12) is communicated with a gas inlet of the gas storage container (14).
8. The continuous production system of claim 1, further comprising: the device comprises a first metering feeder (1) and a second metering feeder (20), wherein the first metering feeder (1) and the second metering feeder (20) are both provided with a feeding hole and a discharging hole, and the discharging hole of the first metering feeder (1) and the discharging hole of the second metering feeder (20) are respectively communicated with a raw material and reducing agent conveyor (2).
9. The continuous production system of claim 2, further comprising: the mixing bin (3) is provided with a feeding hole and a discharging hole;
the feed inlet of blending bunker (3) with the discharge gate intercommunication of raw materials and reductant conveyer (2), the discharge gate of blending bunker (3) with the feed inlet intercommunication of air-feed device (5).
10. The continuous production system of claim 9, further comprising: the third metering feeder (4), the third metering feeder (4) is provided with a feed inlet and a discharge outlet;
the feed inlet of the third metering feeder (4) is communicated with the discharge outlet of the mixing bin (3);
and the discharge hole of the third metering feeder (4) is communicated with the feed inlet of the pneumatic feeding device (5).
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| CN202220469390.7U CN217351493U (en) | 2022-03-07 | 2022-03-07 | Continuous production system for producing magnesium metal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114480879A (en) * | 2022-03-07 | 2022-05-13 | 沈阳益富冶炼技术装备有限公司 | Method and system for continuously producing magnesium metal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114480879A (en) * | 2022-03-07 | 2022-05-13 | 沈阳益富冶炼技术装备有限公司 | Method and system for continuously producing magnesium metal |
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