CN109468663B - Anode steel claw graphite dipping system and method - Google Patents
Anode steel claw graphite dipping system and method Download PDFInfo
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- CN109468663B CN109468663B CN201811612696.8A CN201811612696A CN109468663B CN 109468663 B CN109468663 B CN 109468663B CN 201811612696 A CN201811612696 A CN 201811612696A CN 109468663 B CN109468663 B CN 109468663B
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
- C25C3/12—Anodes
- C25C3/125—Anodes based on carbon
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Abstract
The invention discloses a system and a method for dipping graphite on an anode steel claw. The anode steel claw graphite dipping system comprises a kerosene injection device and a dry graphite dipping tank, wherein the kerosene injection device comprises an injection groove and at least one pair of oil atomizers, the injection groove is suitable for the anode steel claw to horizontally slide through, and two of the pair of oil atomizers are respectively arranged on two opposite side walls of the injection groove; be equipped with the float cloth and will dip in the graphite groove futilely and separate for upper portion graphite room and lower part air chamber in dipping in the graphite groove futilely, the graphite room is suitable for and deposits the positive pole steel claw and link to each other with the jetting groove, and after letting in the air chamber, the graphite powder in the graphite room is suspension state and adheres to the positive pole steel claw surface that the surface spraying has kerosene. The system is adopted to dip in graphite, so that the kerosene consumption is low, the graphite dipping efficiency is high, the graphite powder on the steel claw is uniformly coated on the formed kerosene graphite mixing layer, the kerosene graphite mixing layer is relatively dry, the drying treatment is not needed, and the phenomena of fire or molten iron overturning and explosion can not occur in the casting process.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a system and a method for dipping an anode steel claw in graphite.
Background
In the production of aluminum metallurgy industry, when casting the phosphor iron ring of the anode steel claw in the assembly production process of the prebaked aluminum electrolysis anode, the anode steel claw must be dipped with graphite before being assembled with an anode carbon block, so that the conductivity between the steel claw and the carbon block is improved, and the phosphor iron ring is convenient to press and remove again. At present, the wet dipping graphite method is mostly adopted, i.e. kerosene and graphite powder are mixed in advance according to a certain proportion to form graphite liquid, and then an anode steel claw is immersed into the graphite liquid to carry out the graphite wet dipping operation. However, after the steel claw is dipped in the graphite liquid, a large amount of kerosene is attached to the surface of the steel claw, the surface of the steel claw is difficult to be completely dried before reaching a casting post, and the phenomenon of fire or the phenomenon of molten iron overturning and explosion easily occurs when high-temperature molten iron is encountered during casting, so that not only is the potential safety hazard existed, but also the molten iron in the carbon bowl is not full, and further the product quality is influenced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a system and a method for dipping the anode steel claw with graphite. From this, adopt this positive pole steel claw to dip in graphite system and dip in graphite not only the kerosene quantity is few, dip in graphite efficient, and the graphite powder on the steel claw paints even and the kerosene graphite mixing layer that forms relatively dry moreover, need not to dry and handles to still can not appear in the casting process and catch fire or the molten iron turns over and soaks, explosion phenomenon, not only improved worker factor of safety and the quality of product has also obtained effective guarantee.
According to a first aspect of the invention, the invention provides an anode steel claw dipping graphite system. According to an embodiment of the invention, the system comprises:
the device comprises a kerosene injection device and a control device, wherein the kerosene injection device comprises an injection groove and at least one pair of oil atomizers, the injection groove is suitable for the anode steel claw to horizontally slide through, two of the pair of oil atomizers are respectively arranged on two opposite side walls of the injection groove, the oil atomizers are provided with a compressed air electromagnetic valve and an oil mist nozzle, and the oil atomizers are suitable for spraying kerosene on the surface of the anode steel claw which horizontally slides through;
dry dip in the graphite groove, dry dip in be equipped with float cloth in the graphite groove and float cloth will dry dip in the graphite groove and separate for upper portion graphite chamber and lower part air chamber, the graphite chamber is suitable for depositing positive pole steel claw and with the jetting groove links to each other, works as behind the air inlet in the air chamber, the indoor graphite powder of graphite is the suspension state and is attached to the surface spraying and has the kerosene positive pole steel claw surface.
According to the anode steel claw graphite dipping system provided by the embodiment of the invention, the traditional wet graphite dipping device is changed into the kerosene injection device and the dry graphite dipping tank which are respectively independent, so that a layer of kerosene coating can be formed on the surface of the claw column of the anode steel claw in advance, and then the suspended graphite powder is attached to the kerosene coating to finish the graphite dipping operation. Specifically, when a graphite dipping request is made, an air electromagnetic valve of the oil atomizer is opened, kerosene is brought out by utilizing compressed air, and a uniform kerosene coating can be formed on the surface of a claw column of an anode steel claw when the anode steel claw passes through a blowing groove; open the dry graphite groove of dipping in advance simultaneously and provide the air to the air chamber, the air gets into the graphite chamber through the float cloth, and the graphite powder forms the suspension effect under the air action, and the mobility is good and evenly be difficult for hardening, can make the graphite powder adhere to on the kerosene coating when placing the positive pole steel claw that will be formed with the kerosene coating in the graphite powder that is the suspension state in, forms kerosene graphite and mixes the layer. From this, adopt this positive pole steel claw to dip in graphite system and dip in graphite not only the kerosene quantity is few, dip in graphite efficient, and the graphite powder on the steel claw paints even and the kerosene graphite mixing layer that forms relatively dry moreover, need not to dry and handles to still can not appear in the casting process and catch fire or the molten iron turns over and soaks, explosion phenomenon, not only improved worker factor of safety and the quality of product has also obtained effective guarantee.
In addition, the anode steel claw graphite dipping system according to the embodiment of the invention can also have the following additional technical characteristics:
in some embodiments of the present invention, at least two pairs of the oil misters are included in a vertical direction of the blowing slot. Thereby, the uniform kerosene coating layer can be further formed on the stud of the anode steel stud.
In some embodiments of the invention, the distance between the oil mist nozzle of the oil mist sprayer positioned at the lowest position in the vertical direction and the bottom surface of the anode steel claw is 4-6 cm. Thereby ensuring that a uniform kerosene coating can be formed on the lower part of the claw column of the anode steel claw.
In some embodiments of the present invention, at least two pairs of the oil misters are included in a horizontal direction of the blowing slot. Thereby, the uniform kerosene coating can be further ensured to be formed on the claw column during the walking process of the anode steel claw.
In some embodiments of the invention, at least two pairs of the atomizers are equally spaced in the horizontal direction. Thereby, the uniformity of the kerosene coating formed on the anode steel stud can be further improved.
In some embodiments of the invention, the distance from the oil atomizer nozzle to the surface of the anode steel claw column in the horizontal direction is 10-15 cm. Thereby, the uniformity of the kerosene coating formed on the anode steel stud can be further improved.
In some embodiments of the present invention, the blowing slot has a length of 190-210cm and a width of 75-95 mm. . Therefore, the anode steel claw can smoothly pass through the device, and the device is further favorable for forming a uniform kerosene coating on the claw column of the anode steel claw.
In some embodiments of the present invention, a dust collection cover is disposed above the blowing slot.
In some embodiments of the invention, the height of the graphite chamber is not less than the height of the anode steel claw. Therefore, the graphite powder can be effectively prevented from suspending outside the graphite chamber.
According to a second aspect of the invention, the invention provides a method for realizing graphite dipping of the anode steel claw by using the anode steel claw graphite dipping system. According to an embodiment of the invention, the method comprises:
horizontally sliding an anode steel claw in a spraying groove of the kerosene spraying device, and spraying kerosene to the surface of a claw column of the anode steel claw by using the oil atomizer so as to form a kerosene coating;
start in advance dry dipping in graphite groove makes graphite powder in the graphite chamber is the suspended state, will form the positive pole steel claw of kerosene coating is arranged in and is the suspended state's graphite powder and makes the graphite powder attach to on the kerosene coating, form the kerosene graphite and mix the layer.
According to the method for dipping the graphite on the anode steel claw, a kerosene spraying device can be used for forming a layer of kerosene coating on the surface of the claw column of the anode steel claw in advance, and then a dry graphite dipping groove is used for enabling the suspended graphite powder to be attached to the kerosene coating so as to finish the graphite dipping operation. By adopting the method, the consumption of kerosene is less, the graphite dipping efficiency is high, the graphite powder on the steel claw is uniformly coated, the formed kerosene graphite mixing layer is relatively dry, the drying treatment is not needed, the phenomena of fire or molten iron overturning and explosion can not occur in the casting process, the safety coefficient of workers is improved, and the product quality is effectively guaranteed.
In some embodiments of the invention, the speed of the anode steel claw sliding horizontally in the blowing groove is 0.15-0.25 m/s. Thereby, the formation of a uniform and moderate thickness kerosene coating on the stud of the anode steel stud can be further facilitated.
In some embodiments of the invention, the spray pressure of the oil atomizer is 0.3-0.5 MPa. Therefore, a uniform kerosene coating can be formed on the anode steel claw column, and the phenomenon of kerosene sagging is avoided.
In some embodiments of the invention, the kerosene coating has a thickness of no greater than 0.15 mm. Therefore, enough graphite powder can be loaded on the claw column of the anode steel claw, and the phenomena of fire, molten iron tumbling and explosion can be further avoided in the casting process.
In some embodiments of the invention, the gas chamber has a gas supply pressure of 0.05 to 0.1 MPa. Therefore, the graphite powder can be in a suspension state, and the graphite powder can be effectively prevented from suspending outside the graphite chamber.
In some embodiments of the invention, the thickness of the kerosene graphite mixed layer is 0.15-0.25 mm. Therefore, the anode steel claw and the anode carbon block have better conductivity, and the secondary press-off of the ferro-phosphorus ring can be further facilitated.
In some embodiments of the invention, the graphite powder loading of the individual claw columns on the anode steel claw is 30-40 g. Therefore, the anode steel claw and the anode carbon block have better conductivity, and the secondary press-off of the ferro-phosphorus ring can be further facilitated.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an anode steel claw graphite dipping system according to one embodiment of the invention.
Fig. 2 is a schematic structural view of a kerosene blowing device according to an embodiment of the present invention.
FIG. 3 is a schematic diagram of the structure of a dry-dip graphite cell according to one embodiment of the present invention.
FIG. 4 is a flow chart of a method for dipping the anode steel claw with graphite according to one embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
According to a first aspect of the invention, the invention provides an anode steel claw dipping graphite system. According to an embodiment of the present invention, as shown in fig. 1, the system includes a kerosene blowing device 10 and a dry dipping graphite bath 20. The kerosene injection device 10 comprises an injection groove 11 and at least one pair of oil atomizers 12, wherein the injection groove 11 is suitable for the anode steel claw 30 to horizontally slide through, two of the pair of oil atomizers 12 are respectively arranged on two opposite side walls of the injection groove 11, the oil atomizers 12 are provided with a compressed air electromagnetic valve (not shown) and an oil mist nozzle, and the oil atomizers 12 are suitable for spraying the kerosene on the surface of the anode steel claw 30 which horizontally slides through; the inside of the dry dipping graphite groove 20 is provided with a float cloth 21, the dry dipping graphite groove 20 is divided into an upper graphite chamber 22 and a lower air chamber 23 by the float cloth 21, the graphite chamber 22 is suitable for storing the anode steel claw 30 and is connected with the blowing groove 11, and after air is introduced into the air chamber 23, graphite powder in the graphite chamber 22 is in a suspension state and is attached to the surface of the anode steel claw 30 with kerosene sprayed on the surface.
According to the anode steel claw graphite dipping system of the embodiment of the invention, the traditional wet graphite dipping device is changed into the kerosene injection device 10 and the dry graphite dipping tank 20 which are respectively independent, so that a layer of kerosene coating can be formed on the surface of the claw column of the anode steel claw 30 in advance, and then the suspended graphite powder is attached to the kerosene coating to finish the graphite dipping operation. Specifically, when a graphite dipping request is made, the air electromagnetic valve of the oil atomizer 12 is opened, kerosene is brought out by compressed air, and a uniform kerosene coating can be formed on the surface of the claw column of the anode steel claw 30 when the anode steel claw 30 passes through the blowing groove 11; open dry dipping graphite groove 20 in advance simultaneously and provide the air to air chamber 23, the air gets into graphite chamber 22 through float cloth 21, and the graphite powder forms the suspension effect under the air action, and the mobility is good and even difficult hardening, can make the graphite powder adhere to on the kerosene coating when placing the positive pole steel claw 30 that is formed with the kerosene coating in the graphite powder that is the suspension state in, forms the kerosene graphite and mixes the layer. From this, adopt this positive pole steel claw to dip in graphite system and dip in graphite not only the kerosene quantity is few, dip in graphite efficient, and the graphite powder on the steel claw paints even and the kerosene graphite mixing layer that forms relatively dry moreover, need not to dry and handles to still can not appear in the casting process and catch fire or the molten iron turns over and soaks, explosion phenomenon, not only improved worker factor of safety and the quality of product has also obtained effective guarantee.
The anode steel claw dipping graphite system according to the above embodiment of the present invention will be described in detail with reference to fig. 1 to 3.
According to a specific embodiment of the present invention, at least two pairs of the oil misters 12 may be included in a vertical direction of the blowing slot 11. In the invention, at least two pairs of oil sprayers 12 are arranged in the vertical direction of the injection groove 11, so that a uniform kerosene coating can be further formed on the claw column of the anode steel claw 30. Further, the distance of the oil mist nozzle of the lowermost oil mist sprayer 12 in the vertical direction from the bottom surface of the anode steel claw 30 may be 4 to 6cm, for example, 5cm, whereby it is possible to ensure that a uniform kerosene coating is formed also in the lower portion of the claw column of the anode steel claw 30.
According to still another embodiment of the present invention, at least two pairs of the atomizers 12 may be included in the horizontal direction of the blowing slot 11. The anode steel claw graphite dipping system can spray kerosene to the claw column in the anode steel claw walking process, and the invention can further ensure that a uniform kerosene coating can be formed on the claw column in the anode steel claw walking process by arranging at least two pairs of oil sprayers 12 in the horizontal direction of the spraying groove 11. Preferably, 3 pairs of oil misters 12 can be included in the horizontal direction of the spraying slot 11, and 3 pairs of oil misters 12 can be symmetrically arranged on two opposite side walls of the spraying slot 11, and the inventor finds that arranging 3 pairs of oil misters 12 in the horizontal direction of the spraying slot 11 can ensure that even kerosene coating can be formed on the claw column during the walking process of the anode steel claw, thereby further simplifying the structure of the kerosene spraying device 10 on the basis of ensuring that even kerosene coating can be formed on the claw column of the anode steel claw.
According to still another embodiment of the present invention, at least two pairs of the oil misters 12 in the horizontal direction of the blowing slot 11 may be equally spaced. Thereby, the uniformity of the kerosene coating formed on the anode steel stud can be further improved.
According to a further embodiment of the invention, the distance from the oil atomizer nozzle to the surface of the anode steel stud in the horizontal direction is 10-15cm, for example 10cm, 11cm, 12cm, 13cm, 14cm or 15 cm. The inventor finds that when the distance from the oil atomizer nozzle to the surface of the anode steel claw column is too far, the kerosene oil mist is not enough to be fully sprayed onto the anode steel claw column, the spraying efficiency is low, the kerosene loss is more, and when the distance from the oil atomizer nozzle to the surface of the anode steel claw column is too close, the impact force of the kerosene spraying onto the anode steel claw column is too large, the thickness of the coating formed by the kerosene on the claw column is not uniformly distributed, the phenomenon of sagging is easy to occur locally, and the kerosene coating cannot be formed on the surface of the claw column.
According to a further embodiment of the invention, the blowing slot 11 can have a length of 190-210cm, for example 195cm, 200cm or 205cm, and a width of 75-95mm, for example 80cm, 85cm or 90 cm. According to the invention, by controlling the size of the spraying groove 11, the anode steel claw can smoothly pass through, the distance from the oil atomizer nozzle to the surface of the anode steel claw column can be 10-15cm, and at least two pairs of oil atomizers 12 can be arranged in the horizontal direction of the spraying groove 11, so that a uniform kerosene coating can be further formed on the anode steel claw column. Furthermore, a dust collection cover 13 can be arranged above the injection groove 11, a dust collection pipe 14 is arranged on the dust collection cover, and the dust collection cover 13 can be a gas collection cover, and the inventor finds that when the anode steel claw 30 is matched with and blows kerosene, the compressed air is used for taking out the kerosene, the sprayed kerosene and the compressed air form oil mist which can pollute the surrounding environment, meanwhile, dust can be attached to the anode steel claw 30 and generate raise dust under the action of the compressed air to pollute the surrounding environment, and when dust is directly collected by dust collection equipment, a large amount of kerosene can be attached to a cloth bag of a dust collector to reduce the dust collection effect.
According to another embodiment of the invention, the automatic controller can be used for controlling the air electromagnetic valve to be opened or closed, when a graphite dipping request is made, the catenary stopper is opened, the anode guide rod starts to run, the automatic controller controls the compressed air electromagnetic valve to be opened, and the compressed air is used for carrying out kerosene to form oil mist to be sprayed on the surface of the steel claw, so that the consumption of the kerosene is low, and the device is safe and efficient.
According to yet another embodiment of the present invention, the height of the graphite chamber 22 may be not less than the height of the anode steel claw 30. The inventor finds that in order to enable the graphite powder to be uniformly attached to the anode steel claw column with the kerosene coating, the graphite powder needs to have a certain suspension height, and if the height of the graphite chamber 22 is too low, the graphite powder is easily suspended outside the graphite chamber 22, and the graphite powder can be effectively prevented from suspending outside the graphite chamber 22 by controlling the height of the graphite chamber 22 to be not less than the height of the anode steel claw 30.
According to another embodiment of the present invention, the anode steel claw graphite dipping system may further comprise a cylinder connected to the dry graphite dipping tank 20, and when the anode steel claw 30 is brought into the graphite chamber 22 by the catenary after spraying kerosene and stops, the height of the anode steel claw 30 does not need to be adjusted, and the dry graphite dipping tank 20 moves up under the action of the cylinder to enable the suspended graphite powder to be uniformly attached to the surface of the claw column of the anode steel claw.
According to a second aspect of the invention, the invention provides a method for realizing graphite dipping of the anode steel claw by using the anode steel claw graphite dipping system. According to an embodiment of the invention, as shown in fig. 4, the method comprises:
s100: forming kerosene coating on the surface of the claw column of the anode steel claw
According to the embodiment of the invention, the anode steel claw horizontally slides in the spraying groove of the kerosene spraying device, and the kerosene is sprayed to the surface of the claw column of the anode steel claw by using the oil atomizer so as to form the kerosene coating. Thereby, kerosene can be attached to the claw column of the anode steel claw in advance.
According to an embodiment of the invention, the horizontal sliding speed of the anode steel claw in the blowing slot can be 0.15-0.25m/s, such as 0.18m/s, 0.20m/s, 0.22m/s or 0.24 m/s. The inventor finds that if the horizontal sliding speed of the anode steel claw in the injection groove is too high, the surface of a claw column of the anode steel claw is difficult to be adhered by kerosene to form a uniform kerosene coating, and if the horizontal sliding speed of the anode steel claw in the injection groove is too low, the formed kerosene coating is easy to be too thick, so that a relatively dry kerosene graphite mixed layer cannot be formed after graphite powder is adsorbed, and the potential safety hazard caused by ignition, molten iron churning and explosion in the casting process is difficult to effectively avoid. According to the invention, by controlling the horizontal sliding speed of the anode steel claw in the injection groove to be 0.15-0.25m/s, a uniform and moderate-thickness kerosene coating can be formed on the surface of the claw column of the anode steel claw, so that graphite powder can be further favorably and uniformly attached to the claw column of the anode steel claw and a relatively dry kerosene graphite mixing layer can be formed. Preferably, the horizontal sliding speed of the anode steel claw in the blowing groove can be 0.20m/s, so that the uniform and moderate-thickness kerosene coating can be further formed on the surface of the claw column of the anode steel claw.
According to a further embodiment of the invention, the spray pressure of the oil atomizer may be 0.3-0.5MPa, e.g. 0.35MPa, 0.4MPa or 0.45MPa, etc. The inventor finds that if the spraying pressure of the oil atomizer is too low, the kerosene is not enough to form uniform oil mist and the oil mist is fully sprayed on the claw column of the anode steel claw, the spraying efficiency is low, the loss of the kerosene is more, while the spraying pressure of the oil atomizer is too high, the impact force of the kerosene sprayed on the claw column of the anode steel claw is also larger, the thickness of the coating formed by the kerosene on the claw column is not uniformly distributed, the phenomenon of sagging is easy to occur locally, and the kerosene coating can not be formed on the surface of the claw column.
According to yet another embodiment of the present invention, the thickness of the kerosene coating layer may be not more than 0.15mm, for example, may be not more than 0.1mm, 0.12mm or 0.14mm, etc. The inventor finds that if the thickness of the kerosene coating is too large, a relatively dry kerosene graphite mixed layer cannot be formed after adsorbing graphite powder, so that the potential safety hazard caused by fire, molten iron tumble and explosion in the casting process is difficult to effectively avoid, and if the thickness of the kerosene coating is too small, the amount of graphite powder attached to the claw column of the anode steel claw is too small, so that the conductivity between the steel claw and the carbon block is influenced, and the secondary press-off of a ferro-phosphorus ring is not facilitated. According to the invention, by controlling the thickness of the kerosene coating to be not more than 0.15mm, not only can enough graphite powder be loaded on the claw column of the anode steel claw, but also the phenomena of fire, molten iron tumbling and explosion can be further ensured not to occur in the casting process, and the quality of the anode cast product can be ensured. Further, the thickness of the kerosene coating can be not more than 0.1mm, therefore, when the anode steel claw forming the kerosene coating is placed in the graphite powder in a suspension state, because the graphite has stronger adsorbability, the graphite powder can be stably attached to the kerosene coating and form an even and relatively dry kerosene graphite mixing layer, and the thickness of the subsequently formed kerosene graphite mixing layer can reach 0.15-0.25mm, thereby not only further improving the utilization rate of the graphite powder, ensuring that the phenomena of ignition or molten iron overturning and explosion can not occur in the casting process, ensuring the product quality of anode casting, and being beneficial to secondary pressure stripping of a ferro-phosphorus ring.
S200: graphite powder in a suspended state is attached to the kerosene coating
According to the embodiment of the invention, the dry dipping graphite tank is started in advance, so that the graphite powder in the graphite chamber is in a suspension state, the anode steel claw forming the kerosene coating is placed in the graphite powder in the suspension state, and the graphite powder is attached to the kerosene coating, so that the kerosene graphite mixing layer is formed. Therefore, the graphite powder can be uniformly attached to the claw column of the anode steel claw, and a relatively dry kerosene graphite mixed layer is formed.
According to a particular embodiment of the invention, the gas supply pressure of the gas chamber may be 0.05-0.1MPa, for example 0.05MPa, 0.06MPa, 0.07MPa, 0.08MPa, 0.09MPa or 0.1 MPa. According to the invention, the gas supply pressure of the gas chamber is controlled to be 0.05-0.1MPa, so that the graphite powder is in a suspension state, and the phenomenon that the graphite powder is suspended outside the graphite chamber due to overlarge gas flow can be effectively avoided.
According to still another embodiment of the present invention, the thickness of the kerosene graphite mixed layer may be 0.15 to 0.25mm, for example, 0.18mm, 0.2mm, 0.22mm, 0.24mm, or the like. The inventor finds that if the thickness of the kerosene graphite mixing layer is too thin, the ferrophosphorus ring is difficult to press and remove, and if the thickness of the kerosene graphite mixing layer is too thick, not only graphite waste is caused, but also the casting pressure drop is increased for the subsequent anode casting. By controlling the thickness of the kerosene graphite mixing layer to be 0.15-0.25mm, the invention not only can further improve the utilization rate of graphite powder, ensure that the phenomena of fire, molten iron tumble and explosion can not occur in the casting process, ensure the product quality of anode casting, but also is further beneficial to the secondary press-off of the ferro-phosphorus ring. Preferably, the thickness of the kerosene graphite mixed layer may be 0.2mm, whereby the quality of the anode cast product can be further ensured and the secondary press-off of the ferrophosphorus ring can be facilitated.
According to another embodiment of the present invention, the graphite powder loading of the single claw column on the anode steel claw may be 30-40g, such as 30g, 31g, 32g, 33g, 34g, 35g, 36g, 37g, 38g or 39g, and the graphite powder specific gravity may be about 1.9-2.3, and the graphite powder loading of the single claw column on the anode steel claw may be 33g, and the graphite powder loading of each anode steel claw is about 132g, taking the anode steel claw with 4 claw columns as an example. The inventor finds that if the graphite powder loading of a single claw column on the anode steel claw is too small, the secondary press-off of the ferrophosphorus ring is not facilitated, and when the graphite powder loading of a single claw column on the anode steel claw is too large, not only is graphite waste caused, but also the casting pressure drop is increased for the subsequent anode casting. According to the invention, by controlling the graphite powder loading capacity of a single claw column on the anode steel claw to be 30-40g, the anode steel claw and the anode carbon block can have better conductivity, and the secondary press-off of the ferro-phosphorus ring can be further facilitated.
According to the method for dipping the graphite on the anode steel claw, a kerosene spraying device can be used for forming a layer of kerosene coating on the surface of the claw column of the anode steel claw in advance, and then a dry graphite dipping groove is used for enabling the suspended graphite powder to be attached to the kerosene coating so as to finish the graphite dipping operation. Therefore, by adopting the method, the consumption of kerosene is less, the graphite dipping efficiency is high, the graphite powder on the steel claw is uniformly coated, the formed kerosene graphite mixing layer is relatively dry, the drying treatment is not needed, the phenomena of fire or molten iron overturning and explosion can not occur in the casting process, the safety coefficient of workers is improved, and the quality of the product is effectively guaranteed.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (15)
1. An anode steel claw graphite dipping system, comprising:
the device comprises a kerosene injection device and a control device, wherein the kerosene injection device comprises an injection groove and at least one pair of oil atomizers, the injection groove is suitable for the anode steel claw to horizontally slide through, two of the pair of oil atomizers are respectively arranged on two opposite side walls of the injection groove, the oil atomizers are provided with a compressed air electromagnetic valve and an oil mist nozzle, and the oil atomizers are suitable for spraying kerosene on the surface of the anode steel claw which horizontally slides through;
the dry dipping graphite tank is internally provided with a floating cloth which divides the dry dipping graphite tank into an upper graphite chamber and a lower air chamber, the graphite chamber is suitable for storing the anode steel claw and is connected with the blowing tank, and after air is introduced into the air chamber, graphite powder in the graphite chamber is in a suspension state and is attached to the surface of the anode steel claw, the surface of which is sprayed with kerosene;
the length of the blowing groove is 190-210cm, and the width is 75-95 mm.
2. The system of claim 1, comprising at least two pairs of atomizers in a vertical direction of the blowing slot.
3. The system as claimed in claim 2, wherein the distance of the oil mist nozzle of the lowermost oil mist sprayer in the vertical direction from the bottom surface of the anode steel claw is 4-6 cm.
4. The system according to any one of claims 1 to 3, wherein at least two pairs of the oil misters are included in a horizontal direction of the blowing slot.
5. The system of claim 4, wherein at least two pairs of the atomizers are equally spaced apart in the horizontal direction.
6. The system of claim 4, wherein the distance from the oil atomizer nozzle to the surface of the anode steel claw column in the horizontal direction is 10-15 cm.
7. The system of claim 1, wherein a dust collection hood is disposed above the blowing slot.
8. The system of claim 7, wherein the graphite chamber has a height no less than the height of the anode steel claw.
9. A method for dipping anode steel claws with graphite by using the system of any one of claims 1 to 8, which comprises the following steps:
horizontally sliding an anode steel claw in a spraying groove of the kerosene spraying device, and spraying kerosene to the surface of a claw column of the anode steel claw by using the oil atomizer so as to form a kerosene coating;
start in advance dry dipping in graphite groove makes graphite powder in the graphite chamber is the suspended state, will form the positive pole steel claw of kerosene coating is arranged in and is the suspended state's graphite powder and makes the graphite powder attach to on the kerosene coating, form the kerosene graphite and mix the layer.
10. The method according to claim 9, wherein the anode steel claw slides horizontally in the blowing slot at a speed of 0.15-0.25 m/s.
11. The method of claim 9, wherein the spray pressure of the oil atomizer is 0.3 to 0.5 MPa.
12. The method of claim 9, wherein the kerosene coating has a thickness of no more than 0.15 mm.
13. The method of claim 9, wherein the gas chamber has a gas supply pressure of 0.05 to 0.1 MPa.
14. The method according to claim 9, wherein the thickness of the kerosene graphite mixed layer is 0.15-0.25 mm.
15. The method according to any one of claims 9 to 14, wherein the graphite powder loading of the individual claw poles on the anode steel claw is 30 to 40 g.
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| CN201811612696.8A CN109468663B (en) | 2018-12-27 | 2018-12-27 | Anode steel claw graphite dipping system and method |
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| CN201811612696.8A CN109468663B (en) | 2018-12-27 | 2018-12-27 | Anode steel claw graphite dipping system and method |
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| CN109468663B true CN109468663B (en) | 2021-06-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1974862B (en) * | 2006-12-08 | 2010-05-19 | 中国铝业股份有限公司 | Process of dipping graphite onto anode steel pawl |
| CN202356220U (en) * | 2011-10-30 | 2012-08-01 | 湖南晟通科技集团有限公司 | Spray coating device for anode steel jaw graphite paste |
| CN103084315A (en) * | 2011-10-30 | 2013-05-08 | 湖南晟通科技集团有限公司 | Graphite paste spray material of anode steel claw and spraying method of graphite paste sprayer |
| CN203754824U (en) * | 2013-12-27 | 2014-08-06 | 湖南创元新材料有限公司 | Device for dry-dipping graphite through anode steel claw |
| CN105671593B (en) * | 2016-04-05 | 2017-09-01 | 内蒙古风光源节能环保科技有限公司 | A kind of full-automatic steel pawl dry powder liquid atomization absorption all-in-one |
| CN205803616U (en) * | 2016-04-05 | 2016-12-14 | 内蒙古风光源节能环保科技有限公司 | A kind of full-automatic steel pawl dips in powder liquid atomization adsorption machine |
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