CN210036222U - Closed non-fixed anode DC ore-smelting furnace - Google Patents
Closed non-fixed anode DC ore-smelting furnace Download PDFInfo
- Publication number
- CN210036222U CN210036222U CN201920888953.4U CN201920888953U CN210036222U CN 210036222 U CN210036222 U CN 210036222U CN 201920888953 U CN201920888953 U CN 201920888953U CN 210036222 U CN210036222 U CN 210036222U
- Authority
- CN
- China
- Prior art keywords
- furnace
- electrode
- anode
- electrode column
- gas flue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model provides an airtight fixed anode-free direct-current submerged arc furnace. The utility model discloses a: the furnace comprises a furnace body, a furnace cover, an electrode column system, a feeding system, a flue gas leading-out system, a power supply system, a cooling water system and a hydraulic system, wherein the furnace body is used for accommodating furnace burden, the electrode column system is used for heating and melting the furnace burden by utilizing direct current electric arc, the electrode column system comprises a cathode and an anode, the depth of the electrode column system inserted into the furnace burden can be freely adjusted, the furnace cover used for ensuring the sealing of the furnace body is arranged above a furnace shell of the furnace body, and the sealing treatment is carried out between the furnace cover. The utility model discloses the higher ore smelting furnace gas of CO concentration is produced in the airtight back stove of ore smelting furnace, can regard as the fuel of electricity generation, calcination, hot-blast furnace etc. after the purification recovery, and the value of utilization is high, can reduce comprehensive energy consumption. Almost no air enters the hearth, the electrode is slowly oxidized, the loss is low, the cathode and the anode can move up and down and are inserted into solid furnace burden without directly contacting with high-temperature molten liquid, the structure is simple, the equipment is reliable in operation, and the failure rate is low.
Description
Technical Field
The utility model relates to the technical field of smelting equipment, in particular to an airtight fixed-anode-free direct-current submerged arc furnace.
Background
The direct-current submerged arc furnace applied at present is almost a non-closed submerged arc furnace, and a large amount of cold air enters the furnace to take away part of heat, so that the electrode is quickly oxidized and has large loss. The traditional direct current submerged arc furnace is mostly powered by adopting a mode of fixing an anode, namely, the cathode is arranged above the anode, heat is only transferred longitudinally from top to bottom, the area of heat radiation is small, and the utilization rate of powder is low. The fixed anode is embedded into the furnace lining at the bottom or on the side wall of the furnace lining and is in the environment of high-temperature molten liquid for a long time, so that the fixed anode and the furnace lining have short service life, unstable operation, high failure rate, difficult maintenance and the like. During smelting, open arc smelting is mostly adopted, the loss of heat when the electrode tip is not inserted into furnace charge is large, the element recovery rate is low, and the production efficiency is not high. The feeding mode is mostly manual feeding or intermittent feeding mode, and still needs manual control operation.
Although the direct-current submerged arc furnace has various advantages of no electric resistance, high power factor, high direct-current arc temperature and the like, the advantages of the direct-current submerged arc furnace are not fully exerted all the time because the conventional direct-current submerged arc furnace still has the problems of unstable operation, higher failure rate, low powder utilization rate, high comprehensive energy consumption, low recovery rate, poor labor environment of workers, high working intensity and the like, and thus the direct-current submerged arc furnace is not widely applied yet.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned technical problems, a sealed non-fixed anode dc submerged arc furnace is provided. The utility model discloses a technical means as follows:
a closed non-fixed anode direct current submerged arc furnace comprises: a furnace body, a furnace cover, an electrode column system, a charging system, a flue gas leading-out system, a power supply system, a cooling water system and a hydraulic system, the furnace body is used for accommodating furnace charge, the electrode column system is used for heating and melting the furnace charge by using direct current electric arc, which comprises a cathode and an anode, and the depth of the cathode and the anode can be freely adjusted to be inserted into furnace burden, a furnace cover used for ensuring the sealing of the furnace body is arranged above a furnace shell of the furnace body, the furnace cover and the furnace shell are sealed, a hole is arranged on the furnace cover, the flue gas guiding system is used for discharging flue gas generated by furnace burden, which is connected with the furnace mouth of the furnace body after penetrating through the hole on the furnace cover, the feeding system is used for feeding materials into the furnace body, the power supply system is used for supplying power to the electrodes in the system, the cooling water system is used for providing cooling water for the mechanism to be cooled, and the hydraulic system is used for providing power for the power mechanism in the electrode column system.
Furthermore, the furnace body comprises a furnace body foundation, the furnace shell and a furnace lining, the furnace shell is seated on the furnace body foundation, the furnace lining is built in the furnace shell, a hearth formed after the building of the furnace lining is completed is a place for melting reaction of the furnace material in the submerged arc furnace, a furnace outlet is further formed in the side wall of the furnace shell, and liquid molten products or furnace slag are discharged from the furnace outlet after the reaction is completed.
Further, the material is added into the furnace body through a feeding system, the feeding system comprises a furnace top bin and a discharging pipe, the furnace top bin is installed on a preset civil engineering platform, an outlet of the furnace top bin is connected with the discharging pipe, and the tail end of the discharging pipe penetrates through a discharging pipe hole formed in the furnace cover and extends into the furnace shell.
Furthermore, the flue gas guiding system comprises a clean furnace gas flue system and a raw furnace gas flue system, the clean furnace gas flue system comprises a clean furnace gas flue and a clean furnace gas eduction tube, the bottom end of the clean furnace gas flue is connected with the furnace cover, the other end of the clean furnace gas flue is connected with the clean furnace gas eduction tube, and the clean furnace gas flue is of a full water-cooling structure; the waste gas flue system comprises a waste gas flue, the bottom end of the waste gas flue is connected with the furnace cover, the top end of the waste gas flue directly extends out of the plant, the part of the waste gas flue in the plant is of a water cooling structure, a pneumatic valve is arranged on the waste gas flue, a furnace gas pressure detection mechanism is arranged on the furnace cover, and when the furnace gas pressure detection mechanism detects that the furnace gas pressure exceeds a preset value, the pneumatic valve is controlled to be automatically opened, and the furnace gas is discharged through the waste gas flue.
Furthermore, the electrode column system is a lifting mechanism which comprises an electrode lifting mechanism, an electrode clamping and pressing mechanism, an electrode guide mechanism, a bottom mechanism and an electrode,
the electrode lifting mechanism is arranged on a preset civil engineering platform at the upper part of the electrode column and is used for driving the electrode column to integrally move up and down through a lifting oil cylinder;
the electrode clamping and pressure releasing mechanism is positioned at the upper part of the electrode column and is used for fixing the electrode and controlling the pressure releasing of the electrode along with the consumption of the electrode;
the electrode guide mechanism is in contact with the sleeve of the electrode column and is used for guiding the integrally lifted electrode column when the electrode column is lifted, so that the electrode column is prevented from deviating;
the bottom mechanism is positioned at the lower part of the electrode column, and a conductive element is arranged in the bottom mechanism and used for leading current into the electrode;
the end of the electrode is directly inserted into the furnace charge for directly leading the current into the furnace and providing the electric energy required by smelting.
Further, the power supply system includes: the transformer outputs two groups of interfaces of a cathode and an anode which are respectively connected to bottom mechanisms of the cathode and the anode through the secondary bus, namely, the cathode interface is connected with the cathode electrode, the anode interface is connected with the anode electrode, one transformer is matched with one set of rectifier and corresponds to the two electrodes of the cathode and the anode to form a set of power supply system, and each set of power supply system independently supplies power.
Furthermore, each submerged arc furnace is provided with at least one set of power supply system, and when 2 sets of power supply systems or more than 2 sets of power supply systems are matched, the electrodes of the cathode and the anode are arranged in the furnace in a staggered mode.
Furthermore, the cooling water system is used for providing cooling circulating water for the furnace cover, the clean furnace gas flue, the raw furnace gas flue, the bottom mechanism, the transformer, the rectifier and the secondary bus.
The utility model has the advantages of it is following:
1. after the submerged arc furnace is sealed, submerged arc furnace gas with high CO concentration is generated in the furnace, and can be used as fuel for power generation, roasting, hot blast furnaces and the like after being purified and recovered, so that the utilization value is extremely high, and the comprehensive energy consumption can be reduced.
2. The continuous feeding mode is adopted, the feeding amount is not required to be controlled manually by means of automatic feeding through gravity, the material surface is not required to be processed manually, and the labor intensity of workers is effectively reduced.
3. Almost no air enters the hearth, and compared with a semi-closed furnace, the electrode oxidation is slow and the loss is low.
4. The anode and the cathode can move up and down without a fixed anode, are inserted into solid furnace burden and are not in direct contact with high-temperature molten liquid, the structure is simple, the equipment is reliable in operation, the failure rate is low, and the electrode can be pulled out of the furnace burden, so that the maintenance is convenient.
5. The cathode and the anode are arranged in parallel, the conduction is carried out through the furnace bottom, the heat energy is transferred longitudinally and transversely, the heat energy utilization rate is high, and a large amount of powder can be used.
6. And in submerged arc smelting, the electric arcs are buried in furnace burden, the element recovery rate is high, and the heat energy loss is less.
Based on the reason, the utility model can be widely popularized in the technical field of smelting equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of the closed fixed-anode-free DC submerged arc furnace of the present invention.
Fig. 2 shows the sealing between the furnace lid and the furnace shell in the embodiment of the present invention.
Fig. 3 is an arrangement form of two sets of power supply system electrodes in the embodiment of the present invention.
FIG. 4 shows an arrangement of a set of power supply system electrodes in an embodiment of the present invention
FIG. 5 shows an arrangement of three sets of power supply system electrodes according to an embodiment of the present invention
FIG. 6 shows an arrangement 1 of four sets of power supply system electrodes in an embodiment of the present invention
FIG. 7 shows an arrangement 2 of four sets of electrodes of the power supply system according to an embodiment of the present invention
1. The furnace comprises a furnace body foundation, 2. a furnace shell, 3. a furnace outlet, 4. a furnace lining, 5. a cooling water system, 6. a furnace cover, 7. a blanking pipe, 8. a clean furnace gas flue, 9. a furnace top bin, 10. a clean furnace gas outlet pipe, 11. a crude furnace gas flue, 12. an electrode lifting mechanism, 13. an electrode clamping and pressure releasing mechanism, 14. an electrode guiding mechanism, 15. a pneumatic butterfly valve, 16. a hydraulic system, 17. an electric furnace transformer, 18. a rectifier, 19. a secondary bus, 20 bottom mechanisms, 21 electrodes and 22 furnace burden.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the traditional alternating current submerged arc furnace, all electrodes can lift within a stroke range because the electrodes are not divided into cathodes and anodes, but the conventional direct current submerged arc furnace can lift by the cathodes, and the anodes are fixed in a furnace lining at the bottom or the side part of a hearth. The heat energy utilization rate is low, the electrode oxidation speed is high, and the economic burden is increased due to the overhigh loss. Based on this, as shown in fig. 1, the embodiment of the utility model discloses an airtight no fixed anode direct current submerged arc furnace, include: the furnace comprises a furnace body, a furnace cover 6, an electrode column system, a feeding system, a smoke guiding system, a power supply system, a cooling water system 5 and a hydraulic system 16, wherein the furnace body is used for accommodating furnace 22, the electrode column system is used for heating and melting the furnace 22 by utilizing direct current electric arc, an electrode 21 comprises a cathode and an anode, the depth of the cathode and the anode which are inserted into the furnace 22 can be freely adjusted, when the furnace is required to be overhauled, the electrode 21 can be pulled out of the furnace 22 to facilitate overhauling, the furnace cover 6 used for ensuring the furnace body to be sealed is arranged above a furnace shell 2 of the furnace body, the furnace cover 6 and the furnace shell 2 are subjected to sealing treatment, a hole is formed in the furnace cover 6, the smoke guiding system is used for discharging smoke generated by the furnace 22, the smoke guiding system penetrates through the hole in the furnace cover 6 and then is connected with a furnace opening of the furnace body, the feeding, the cooling water system 5 is used for providing cooling water for the mechanism to be cooled, and the hydraulic system 16 is used for providing power for the power mechanism in the electrode column system.
The furnace body comprises a furnace body foundation 1, a furnace shell 2 and a furnace lining 4, wherein the furnace shell 2 is arranged on the furnace body foundation, the furnace lining 4 is built in the furnace shell 2, a hearth formed after the building of the furnace lining 4 is completed is a place for melting reaction of furnace charge 22 in the submerged arc furnace, a furnace outlet 3 is further formed in the side wall of the furnace shell 2, liquid molten products or furnace slag after the reaction is completed are discharged from the furnace outlet 3, a furnace eye with the diameter of 80-100 is arranged in the furnace outlet 3, the furnace eye is blocked by refractory clay during normal smelting, and the furnace eye is drilled by a drill rod of an eye opening machine during discharging.
The furnace body is added to the material through charging system, charging system includes furnace roof feed bin 9, unloading pipe 7, and furnace roof feed bin 9 is installed on predetermined civil engineering platform, and furnace roof feed bin 9 export is connected with unloading pipe 7, and unloading pipe 7 tail end passes 7 holes of unloading pipe 7 that bell 6 was seted up and deepens stove outer covering 2 in, unloading pipe 7 can divide into a plurality of evenly distributed's branch road according to the practical application scene to carry the material to the furnace body in evenly.
The flue gas derivation system comprises a clean furnace gas flue 8 system and a raw furnace gas flue 11 system, the clean furnace gas flue 8 system comprises a clean furnace gas flue 8 and a clean furnace gas eduction tube 10, the bottom end of the clean furnace gas flue 8 is connected with the furnace cover 6, the other end of the clean furnace gas flue 8 is connected with the clean furnace gas eduction tube 10, the clean furnace gas flue 8 is of a full water-cooling structure, the clean furnace gas eduction tube 10 is connected with subsequent furnace gas purification equipment, the clean furnace gas eduction tube can be used as fuels for power generation, roasting, hot blast furnaces and the like after purification and recovery, the utilization value is high, and the.
The raw gas flue 11 system comprises a raw gas flue 11, the bottom end of the raw gas flue 11 is connected with the furnace cover 6, the top end of the raw gas flue 11 directly extends out of the plant, the part of the raw gas flue 11 in the plant is of a water-cooling structure, a pneumatic valve is arranged on the raw gas flue 11, under normal conditions, furnace gas is led out through the clean gas flue 8, and the pneumatic valve of the raw gas flue 11 is in a normally closed state and is only opened under an accident state. The furnace cover 6 is provided with a furnace gas pressure detection mechanism, when the furnace gas pressure detection mechanism detects that the furnace gas pressure exceeds a preset value, the pneumatic valve is controlled to be automatically opened, the furnace gas is discharged through the raw coke oven gas flue 11, the pressure in the furnace cavity is released, and safety accidents are prevented. The water-cooling structure of the flue gas leading-out system is a water cavity arranged inside the flue.
The electrode column system is a lifting mechanism and comprises an electrode lifting mechanism 12, an electrode clamping and pressing mechanism 13, an electrode guide mechanism 14, a bottom mechanism 20 and an electrode,
the electrode lifting mechanism 12 is arranged on a preset civil engineering platform at the upper part of the electrode column and is used for driving the electrode column to integrally move up and down through a lifting oil cylinder; each set of electrode lifting system consists of 2 lifting oil cylinders, the tail parts of the lifting oil cylinders are installed on a preset civil platform on the upper part of the electrode column, the head parts of piston rods of the lifting oil cylinders are connected with the upper part of the electrode column, and the 2 lifting oil cylinders in each set of electrode lifting system are arranged in parallel and synchronously drive the whole lifting of the electrode column system along with the movement of the piston rods.
The electrode clamping and pressure releasing mechanism is positioned at the upper part of the electrode column and comprises a plurality of groups of clamping mechanisms, clamping oil cylinders, pressure releasing oil cylinders and the like, disc springs are arranged in the clamping mechanisms, and the electrodes are clamped through clamps by utilizing the pretightening force of the disc springs; the clamping oil cylinder is used for overcoming the pretightening force of the disc spring to loosen the clamp; the pressure-releasing oil cylinder is fixed on the sleeve on the upper part of the electrode column, the head of a piston rod of the pressure-releasing oil cylinder is connected with the clamping mechanism, and the clamping mechanism and the electrode are pressed downwards together along with the movement of the piston rod of the pressure-releasing oil cylinder; the electrode is fixed on the electrode column and is controlled to be pressed and released along with the consumption of the electrode through the comprehensive action of the clamping oil cylinder and the dispensing oil cylinder. The hydraulic system 16 provides hydraulic power for the electrode lifting mechanism, the electrode clamping and pressing mechanism and other equipment.
Each set of electrode guide mechanism consists of 4 guide pulleys, and the guide pulleys are directly contacted with the sleeve of the electrode column and distributed around the electrode column; when the electrode column goes up and down, the electrode column which goes up and down integrally is guided, and the electrode column is prevented from deviating.
The bottom mechanism is positioned at the lower part of the electrode column and comprises a protective sleeve, a bottom ring, a conductive element and the like, the conductive element is directly contacted with the electrode, a pre-tightening disc spring is arranged in the conductive element, the pre-tightening force enables the conductive element to be contacted with the electrode more tightly, and current is led into the electrode better; the protective sleeve and the bottom ring are respectively positioned outside and at the bottom of the conductive element, and play a certain role in protecting the conductive element in high-temperature and dust environments.
The ends of the electrodes are inserted directly into the charge 22 for conducting the current directly into the furnace to provide the electrical energy required for smelting.
The power supply system includes: the transformer 17, the rectifier 18 and the secondary bus 19, the transformer 17 inputs the alternating current on the primary side, the voltage is adjusted to the voltage needed by smelting through the transformer 17, the transformer 17 secondary side is connected with the rectifier 18, the rectifier 18 outputs two sets of interfaces of cathode and anode, which are respectively connected to the bottom mechanism 20 of the cathode and the anode through the secondary bus 19, namely, the cathode interface is connected with the cathode electrode, the anode interface is connected with the anode electrode, one transformer 17 is provided with one set of rectifier 18, which corresponds to the two electrodes of the cathode and the anode to form a set of power supply system, and each set of power supply system.
When each submerged arc furnace is provided with at least one set of power supply system and is provided with 2 sets of power supply systems or more than 2 sets of power supply systems, the electrodes of the cathode and the anode are arranged in the furnace in a staggered way.
The cooling water system 5 is used for providing cooling circulating water for the furnace cover 6, the clean furnace gas flue 8, the raw furnace gas flue 11, the bottom mechanism 20, the transformer 17, the rectifier 18 and the secondary bus 19, the cooling water system 5 comprises a water distributor and a circulating water pipeline, the water distributor is divided into a plurality of pipelines, the pipelines are respectively sent to equipment needing cooling through the pipelines, and then the equipment is sent to a water return tank of the water distributor through a water return pipeline.
Raw materials which are prepared according to a certain proportion can be added into a furnace top bin 9 through a belt conveyor, a material tank truck, a feeder, a hoisting mode and the like, then the raw materials are added into a furnace through a blanking pipe 7, a continuous feeding mode is adopted, the interior of the blanking pipe 7 is always full of the raw materials, the charge level in the furnace descends along with the discharge of products or the melting of furnace burden 22, and the raw materials in the furnace top bin 9 are automatically supplemented into the furnace through the blanking pipe 7 by means of gravity. The raw materials are naturally accumulated in the furnace, and the blanking amount and the material surface treatment do not need to be controlled. The number and the positions of the furnace top bin 9 and the blanking pipe 7 can be reasonably matched and arranged according to the size of the furnace type and the specific smelting process.
The primary side of the transformer 17 inputs alternating current which is firstly adjusted into voltage required by smelting by the transformer 17 and then is rectified into direct current by the rectifier 18, the direct current is output through the interfaces of the anode and the cathode, the cathode is connected with the cathode electrode, and the anode is connected with the anode electrode. One transformer 17 is provided with a set of rectifier 18 corresponding to the positive and negative electrodes to form a set of power supply system. Each submerged arc furnace can be provided with 1 set of power supply system shown in figure 4 or a plurality of sets of power supply systems shown in figures 3, 5, 6 and 7, if the submerged arc furnace is provided with 2 sets or more than 2 sets of power supply systems, the electrodes of the cathode and the anode are arranged in the furnace in a staggered way and are symmetrically arranged on two sides or are arranged around the furnace, and most importantly, the uniform arrangement is ensured.
The electrode 21 adopts various forms such as a self-baking electrode, a graphite electrode, a hollow electrode and the like; the electrode end is inserted into the furnace charge 22 for submerged arc smelting, the furnace charge 22 is heated and melted by using direct current electric arc, qualified liquid products are generated after reactions such as reduction, electrolysis and the like occur in the furnace, and the liquid products or slag flow out through the furnace outlet 3. The electrode 21 can be lifted integrally by using an electrode lifting mechanism according to the requirements of the operation process. In the process of electrode lifting, an electrode guide mechanism is used for guiding the electrode, so that the electrode is prevented from deviating. And (4) along with the consumption of the electrode in the furnace, the electrode is pressed and released by using a clamping and pressing mechanism. The electrode column systems of the cathode and the anode are identical in structure and function, and can realize the functions of lifting, clamping, pressing, guiding and the like of the electrode.
The furnace cover 6 is used for sealing the hearth and collecting furnace gas, and the furnace cover 6 is of a water cooling structure due to the high-temperature environment. The sealing structure of the furnace cover 6 and the furnace body is shown in figure 2. The ore smelting furnace gas is sent to the ore smelting furnace gas purification system through the clean furnace gas flue 8 and the clean furnace gas eduction tube 10, and the purified gas can be reused as fuel. The raw coke oven gas flue 11 is a direct exhaust chimney, and the pneumatic butterfly valve 15 on the raw coke oven gas flue 11 is in a normally closed state and is opened only in an accident state, so that the raw coke oven gas is quickly discharged, and safety accidents are avoided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a hot stove in airtight no fixed anode direct current ore deposit which characterized in that includes: a furnace body, a furnace cover, an electrode column system, a charging system, a flue gas leading-out system, a power supply system, a cooling water system and a hydraulic system, the furnace body is used for accommodating furnace charge, the electrode column system is used for heating and melting the furnace charge by using direct current electric arc, which comprises a cathode and an anode, and the depth of the cathode and the anode can be freely adjusted to be inserted into furnace burden, a furnace cover used for ensuring the sealing of the furnace body is arranged above a furnace shell of the furnace body, the furnace cover and the furnace shell are sealed, a hole is arranged on the furnace cover, the flue gas guiding system is used for discharging flue gas generated by furnace burden, which is connected with the furnace mouth of the furnace body after penetrating through the hole on the furnace cover, the feeding system is used for feeding materials into the furnace body, the power supply system is used for supplying power to the electrodes in the system, the cooling water system is used for providing cooling water for the mechanism to be cooled, and the hydraulic system is used for providing power for the power mechanism in the electrode column system.
2. The closed direct-current submerged arc furnace without the fixed anode according to claim 1, wherein the furnace body comprises a furnace body foundation, the furnace shell and a furnace lining, the furnace shell is seated on the furnace body foundation, the furnace lining is built in the furnace shell, a hearth formed after the building of the furnace lining is a place for melting reaction of furnace charge in the submerged arc furnace, a furnace outlet is further formed in a side wall of the furnace shell, and liquid molten products or furnace slag are discharged from the furnace outlet after the reaction is completed.
3. The closed stationary anode-free direct-current submerged arc furnace according to claim 1, wherein the material is fed into the furnace body through a feeding system, the feeding system comprises a furnace top bin and a blanking pipe, the furnace top bin is mounted on a preset civil engineering platform, an outlet of the furnace top bin is connected with the blanking pipe, and an end of the blanking pipe penetrates through a blanking pipe hole formed in the furnace cover and extends into the furnace shell.
4. The closed fixed-anode-free direct-current submerged arc furnace according to claim 1, wherein the flue gas guiding system comprises a clean furnace gas flue system and a raw furnace gas flue system, the clean furnace gas flue system comprises a clean furnace gas flue and a clean furnace gas guiding pipe, the bottom end of the clean furnace gas flue is connected with the furnace cover, the other end of the clean furnace gas flue is connected with the clean furnace gas guiding pipe, and the clean furnace gas flue is of a full water-cooling structure; the waste gas flue system comprises a waste gas flue, the bottom end of the waste gas flue is connected with the furnace cover, the top end of the waste gas flue directly extends out of the plant, the part of the waste gas flue in the plant is of a water cooling structure, a pneumatic valve is arranged on the waste gas flue, a furnace gas pressure detection mechanism is arranged on the furnace cover, and when the furnace gas pressure detection mechanism detects that the furnace gas pressure exceeds a preset value, the pneumatic valve is controlled to be automatically opened, and the furnace gas is discharged through the waste gas flue.
5. The closed stationary anode-free direct current submerged arc furnace according to claim 1, wherein the electrode column system is a lifting mechanism including an electrode lifting mechanism, an electrode clamping and pressing mechanism, an electrode guiding mechanism, a bottom mechanism and an electrode,
the electrode lifting mechanism is arranged on a preset civil engineering platform at the upper part of the electrode column and is used for driving the electrode column to integrally move up and down through a lifting oil cylinder;
the electrode clamping and pressure releasing mechanism is positioned at the upper part of the electrode column and is used for fixing the electrode and controlling the pressure releasing of the electrode along with the consumption of the electrode;
the electrode guide mechanism is in contact with the sleeve of the electrode column and is used for guiding the integrally lifted electrode column when the electrode column is lifted, so that the electrode column is prevented from deviating;
the bottom mechanism is positioned at the lower part of the electrode column, and a conductive element is arranged in the bottom mechanism and used for leading current into the electrode;
the end of the electrode is directly inserted into the furnace charge for directly leading the current into the furnace and providing the electric energy required by smelting.
6. The closed fixed-anode-free direct-current submerged arc furnace according to any one of claims 1 to 5, wherein the power supply system comprises: the transformer outputs two groups of interfaces of a cathode and an anode which are respectively connected to bottom mechanisms of the cathode and the anode through the secondary bus, namely, the cathode interface is connected with the cathode electrode, the anode interface is connected with the anode electrode, one transformer is matched with one set of rectifier and corresponds to the two electrodes of the cathode and the anode to form a set of power supply system, and each set of power supply system independently supplies power.
7. The closed stationary anode-free direct current submerged arc furnace of claim 6, wherein each submerged arc furnace is provided with at least one power supply system, and when 2 or more power supply systems are provided, the electrodes of the cathode and the anode are alternately arranged in the furnace.
8. The closed fixed anode-free direct current submerged arc furnace according to claim 6, wherein the cooling water system is used for providing cooling circulating water for the furnace cover, the clean furnace gas flue, the raw furnace gas flue, the bottom mechanism, the transformer, the rectifier and the secondary bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920888953.4U CN210036222U (en) | 2019-06-13 | 2019-06-13 | Closed non-fixed anode DC ore-smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920888953.4U CN210036222U (en) | 2019-06-13 | 2019-06-13 | Closed non-fixed anode DC ore-smelting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210036222U true CN210036222U (en) | 2020-02-07 |
Family
ID=69348010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920888953.4U Active CN210036222U (en) | 2019-06-13 | 2019-06-13 | Closed non-fixed anode DC ore-smelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210036222U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081703A (en) * | 2019-06-13 | 2019-08-02 | 大连重工机电设备成套有限公司 | Closed no fixed anode DC-ore-heating furnace |
-
2019
- 2019-06-13 CN CN201920888953.4U patent/CN210036222U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081703A (en) * | 2019-06-13 | 2019-08-02 | 大连重工机电设备成套有限公司 | Closed no fixed anode DC-ore-heating furnace |
| CN110081703B (en) * | 2019-06-13 | 2024-02-02 | 大连重工机电设备成套有限公司 | Closed direct-current submerged arc furnace without fixed anode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110081703B (en) | Closed direct-current submerged arc furnace without fixed anode | |
| CN101261078B (en) | Large-sized DC hollow electrode hermetic submerged arc furnace | |
| CN110081704A (en) | Semi-hermetic is without fixed anode DC-ore-heating furnace | |
| CN104651636B (en) | Vacuum electric heat refining magnesium equipment with protection device | |
| CN210036222U (en) | Closed non-fixed anode DC ore-smelting furnace | |
| CN111187909A (en) | DC Al-Si alloy ore-smelting furnace | |
| CN211445849U (en) | DC Al-Si alloy ore-smelting furnace | |
| CN101532781B (en) | Sealed submerged arc furnace system | |
| CN210036223U (en) | Semi-closed fixed-anode-free direct-current submerged arc furnace | |
| CN114877670A (en) | Rotary type fixed-anode-free direct-current submerged arc furnace and working method thereof | |
| CN209745007U (en) | Continuous aluminum alloy centralized melting furnace | |
| CN218349210U (en) | Secondary aluminum smelting device | |
| CN208748139U (en) | Electric furnace smelting device | |
| CN104089476B (en) | A kind of method of induction furnace ferroalloy smelting | |
| CN217628471U (en) | Integrated iron making device | |
| CN202452854U (en) | Ascending smoke outlet device for flash furnace | |
| CN210945730U (en) | Three-phase alternating-current multifunctional environment-friendly reduction furnace | |
| CN213624306U (en) | Multi-electrode high-slag carbonization smelting electric furnace | |
| CN211233948U (en) | Argon blowing type electric furnace cover | |
| CN210321183U (en) | Waste cathode ultrahigh temperature purification furnace | |
| CN218410765U (en) | Charging system of metallurgical furnace | |
| CN210718679U (en) | Bottom ring for ferro-silicon-iron-ore heating furnace electrode holding system for coal source power generation with high power concentration and heat efficiency | |
| CN210036226U (en) | Novel furnace body device of horizontal continuous charging electric arc furnace | |
| CN109631569A (en) | A kind of environmentally friendly smelting rotary kiln handling the cadmium of lead containing zinc-iron dangerous waste material | |
| CN104773734B (en) | A kind of coproduction of calcium carbide and the method and apparatus of ferroalloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |