CN104694958A - Heating device and heating method for heating cathode carbon block for aluminum pre-baking electrolytic bath - Google Patents
Heating device and heating method for heating cathode carbon block for aluminum pre-baking electrolytic bath Download PDFInfo
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- CN104694958A CN104694958A CN201510081202.8A CN201510081202A CN104694958A CN 104694958 A CN104694958 A CN 104694958A CN 201510081202 A CN201510081202 A CN 201510081202A CN 104694958 A CN104694958 A CN 104694958A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
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- Organic Chemistry (AREA)
- Resistance Heating (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
The invention discloses a heating device and a heating method for heating a cathode carbon block for an aluminum pre-baking electrolytic bath. The heating device for heating the cathode carbon block for the aluminum pre-baking electrolytic bath comprises a soaking heating cover, a left heating tube, a right heating tube, a lower heating tube, a temperature sensor, a three-phase alternating current power supply and a controller, wherein an accommodating cavity is formed in the soaking heating cover; the left heating tube, the light heating tube and the lower heating tube are arranged in the accommodating cavity; the temperature sensor is arranged in the heating cavity; the three-phase alternating current power supply is connected with a triangular connection wire or a star connection wire through a switch in a switchable manner; the triangular connection wire or the star connection wire is connected with the left heating tube, the right heating tube and the lower heating tube; and the controller is connected with the temperature sensor and the switch, so as to control the switch to switch between the triangular connection wire and the star connection wire according to a temperature detection value of the temperature sensor. The heating device for heating the cathode carbon block of the aluminum pre-baking electrolytic bath disclosed by the embodiment of the invention has the advantages of high heating speed, short heating time, high pouring adaptability and the like.
Description
Technical field
The present invention relates to the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces, also relating to the heating means for heating aluminium-electrolyzing pre-roaster cathode carbon pieces.
Background technology
At present, the mode of connection of aluminium-electrolyzing pre-roaster cathode carbon pieces and rod iron has rod iron to stick with paste to prick the solid and phosphorus pig iron to pour into a mould two kinds of modes.Because the cathode drop of phosphorus pig iron pouring type is little, have and progressively replace the trend that rod iron pricks solid paste.But utilize phosphorus pig iron pouring type connection aluminium-electrolyzing pre-roaster cathode carbon pieces and rod iron easily to cause aluminium-electrolyzing pre-roaster cathode carbon pieces to burst, cause aluminium-electrolyzing pre-roaster cathode carbon pieces form crack and scrap.
Summary of the invention
The application makes the discovery of the following fact and problem and understanding based on contriver: because aluminium-electrolyzing pre-roaster cathode carbon pieces is heated uneven, therefore in the process of the cast phosphorus pig iron, aluminium-electrolyzing pre-roaster cathode carbon pieces easily bursts, especially when pouring into a mould the large-scale aluminium electrolysis pre-baking tank cathode carbon pieces of more than 300KA.And the existing device for heating aluminium-electrolyzing pre-roaster cathode carbon pieces exists the defect of length heat-up time, needs heating just can reach cast requirement in more than 10 hours, needs are caused to implement complicated anti-oxidation measure thus.
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the present invention proposes a kind ofly have that rate of heating is fast, heat-up time is short, pour into a mould the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces of adaptable advantage.
The present invention also proposes a kind ofly have that rate of heating is fast, heat-up time is short, pour into a mould the heating means for heating aluminium-electrolyzing pre-roaster cathode carbon pieces of adaptable advantage.
The comprising for the heating unit heating aluminium-electrolyzing pre-roaster cathode carbon pieces of embodiment according to a first aspect of the present invention: Heat preservation cover, has container cavity in described Heat preservation cover; Left heating tube and right heating tube, described left heating tube and described right heating tube are located in described container cavity, the left side wall of the contiguous described container cavity of described left heating tube, the right side wall of the contiguous described container cavity of described right heating tube; Lower heating tube, described lower heating tube is located in described container cavity, the diapire of the contiguous described container cavity of described lower heating tube, wherein said left heating tube, form heating chamber for heating aluminium-electrolyzing pre-roaster cathode carbon pieces between described right heating tube and described lower heating tube, each in described left heating tube, described right heating tube and described lower heating tube is the first preset value with the distance of the aluminium-electrolyzing pre-roaster cathode carbon pieces be located in described heating chamber; For measuring the temperature sensor of the temperature of described aluminium-electrolyzing pre-roaster cathode carbon pieces, described temperature sensor is located in described heating chamber; Three-phase alternating-current supply, described three-phase alternating-current supply is switchably connected with triangle wiring or star-star connection by switch, and described triangle wiring is connected with each in described lower heating tube with described left heating tube, described right heating tube with described star-star connection; And controller, described controller is connected with described temperature sensor and described switch to control described switch according to the temperature detection value of described temperature sensor and switches between described triangle wiring and described star-star connection.
Have for the heating unit heating aluminium-electrolyzing pre-roaster cathode carbon pieces that rate of heating is fast, heat-up time is short, pour into a mould adaptable advantage according to the embodiment of the present invention.
In addition, the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to the above embodiment of the present invention can also have following additional technical characteristic:
According to one embodiment of present invention, described first preset value is 100 millimeters-150 millimeters.
According to one embodiment of present invention, the upper cover that described Heat preservation cover comprises casing and is removably located on described casing, forms the described container cavity of sealing between described casing and described upper cover.
According to one embodiment of present invention, the antetheca of described container cavity is provided with nitrogen inlet, and the rear wall of described container cavity is provided with nitrogen outlet.
According to one embodiment of present invention, the resistance of the resistance of described left heating tube, the resistance of described right heating tube and described lower heating tube is equal to each other.
According to one embodiment of present invention, described left heating tube, described right heating tube and described lower heating tube are integrally formed.
According to one embodiment of present invention, the described heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces comprises further: left installation bracket, described left installation bracket is welded on the left side wall of described container cavity, described left installation bracket is provided with left open holes, and described left heating tube passes described left open holes and is welded on described left installation bracket; Right mounting bracket, described right mounting bracket is welded on the right side wall of described container cavity, and described right mounting bracket is provided with right open holes, and described right heating tube passes described right open holes and is welded on described right mounting bracket; With lower mounting bracket, described lower mounting bracket is welded on the diapire of described container cavity, and described lower mounting bracket is provided with lower open holes, and described lower heating tube passes described lower open holes and is welded on described lower mounting bracket.
According to one embodiment of present invention, described left heating tube is multiple, described right heating tube is multiple, described lower heating tube is multiple, and multiple described left heating tube, multiple described right heating tube and multiple described lower heating tube are arranged at interval along the length direction of described aluminium-electrolyzing pre-roaster cathode carbon pieces.
According to one embodiment of present invention, the roof of described container cavity is provided with the first pouring hole, the second pouring hole and the 3rd pouring hole, described first pouring hole is relative with 1/2 place in the longitudinal direction of described aluminium-electrolyzing pre-roaster cathode carbon pieces, and described second pouring hole and described 3rd pouring hole are relative with 1/3 place in the longitudinal direction of described aluminium-electrolyzing pre-roaster cathode carbon pieces respectively.
The heating means implemented for the heating unit heating aluminium-electrolyzing pre-roaster cathode carbon pieces that the utilization of embodiment is described according to a first aspect of the present invention according to a second aspect of the present invention, described heating means comprise the following steps: be placed in heating chamber by aluminium-electrolyzing pre-roaster cathode carbon pieces; Change-over switch is to make three-phase alternating-current supply be connected with triangle wiring, described three-phase alternating-current supply left heating tube, right heating tube and lower heating tube provides electric power, to utilize described left heating tube, described right heating tube and described lower heating tube to heat described aluminium-electrolyzing pre-roaster cathode carbon pieces; With when the temperature of described aluminium-electrolyzing pre-roaster cathode carbon pieces reaches 590 degrees Celsius, the temperature of described aluminium-electrolyzing pre-roaster cathode carbon pieces to make three-phase alternating-current supply be connected with star-star connection, and is remained on 615 degrees Celsius by change-over switch.
Accompanying drawing explanation
Fig. 1 is the structural representation of the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings the heating unit 10 for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to the embodiment of the present invention is described.As shown in Figure 1, according to the embodiment of the present invention for the heating unit 10 heating aluminium-electrolyzing pre-roaster cathode carbon pieces comprise Heat preservation cover 101, left heating tube 102, right heating tube 103, lower heating tube 104, for measuring the temperature sensor (not shown) of the temperature of aluminium-electrolyzing pre-roaster cathode carbon pieces, three-phase alternating-current supply (not shown) and controller (not shown).
There is in Heat preservation cover 101 container cavity 1011.Left heating tube 102, right heating tube 103 and lower heating tube 104 are located in container cavity 1011.The left side wall 1012 of the contiguous container cavity 1011 of left heating tube 102, the right side wall 1013 of the contiguous container cavity 1011 of right heating tube 103, the diapire 1014 of the contiguous container cavity 1011 of lower heating tube 104.Wherein, left heating tube 102, form heating chamber for heating aluminium-electrolyzing pre-roaster cathode carbon pieces between right heating tube 103 and lower heating tube 104, each in left heating tube 102, right heating tube 103 and lower heating tube 104 is the first preset value with the distance of the aluminium-electrolyzing pre-roaster cathode carbon pieces be located in this heating chamber.In other words, left heating tube 102, right heating tube 103 and lower heating tube 104 is equal to each other with the distance of aluminium-electrolyzing pre-roaster cathode carbon pieces.
This temperature sensor is located in this heating chamber.This three-phase alternating-current supply is switchably connected with triangle wiring or star-star connection by switch, and this triangle wiring is connected with each in lower heating tube 104 with left heating tube 102, right heating tube 103 with this star-star connection.That is, this three-phase alternating-current supply and left heating tube 102, right heating tube 103 and lower heating tube 104 have two kinds of mode of connection, the first mode of connection is: this three-phase alternating-current supply is connected with lower heating tube 104 with left heating tube 102, right heating tube 103 by this triangle wiring, and the second mode of connection is: this three-phase alternating-current supply is connected with lower heating tube 104 with left heating tube 102, right heating tube 103 by this star-star connection.This switch is for switching this two kinds of mode of connection.
This controller is connected with this temperature sensor and this switch to control this switch according to the temperature detection value of this temperature sensor and switches between triangle wiring and star-star connection.
The heating means implemented for the heating unit 10 heating aluminium-electrolyzing pre-roaster cathode carbon pieces utilized according to the embodiment of the present invention are described below.Heating means according to the embodiment of the present invention comprise the following steps:
Aluminium-electrolyzing pre-roaster cathode carbon pieces is placed in this heating chamber;
Switch this switch to make this three-phase alternating-current supply be connected with this triangle wiring, this three-phase alternating-current supply left heating tube 102, right heating tube 103 and lower heating tube 104 provides electric power, to utilize left heating tube 102, right heating tube 103 and lower heating tube 104 to heat this aluminium-electrolyzing pre-roaster cathode carbon pieces;
When the temperature of this aluminium-electrolyzing pre-roaster cathode carbon pieces reaches 590 degrees Celsius, switch this switch to make this three-phase alternating-current supply be connected with this star-star connection, and the temperature of this aluminium-electrolyzing pre-roaster cathode carbon pieces is remained on 615 degrees Celsius.
Being equal to each other with the distance of this aluminium-electrolyzing pre-roaster cathode carbon pieces by making left heating tube 102, right heating tube 103 and lower heating tube 104 for the heating unit 10 heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to the embodiment of the present invention, thus aluminium-electrolyzing pre-roaster cathode carbon pieces can be heated equably, so that in the process of the cast phosphorus pig iron, aluminium-electrolyzing pre-roaster cathode carbon pieces is avoided to burst.
And, according to the temperature-controlled process adopting star triangle to switch for the heating unit 10 heating aluminium-electrolyzing pre-roaster cathode carbon pieces of the embodiment of the present invention, heating tube 102, right heating tube 103 and lower heating tube 104 provide electric power left first to utilize this triangle wiring (270KW), to make this aluminium-electrolyzing pre-roaster cathode carbon pieces be rapidly heated, and then heating tube 102, right heating tube 103 and lower heating tube 104 provide electric power, to make the homo(io)thermism of this aluminium-electrolyzing pre-roaster cathode carbon pieces at 615 degrees Celsius left to utilize this star-star connection (90KW).Greatly can shorten the heat-up time (this heat-up time is less than or equal to 180 minutes) to this aluminium-electrolyzing pre-roaster cathode carbon pieces thus, thus without the need to implementing complicated anti-oxidation measure.
Therefore, according to the embodiment of the present invention have that rate of heating is fast, heat-up time is short for the heating unit 10 heating aluminium-electrolyzing pre-roaster cathode carbon pieces, the advantage such as cast strong adaptability, that greatly can improve aluminium-electrolyzing pre-roaster cathode carbon pieces pours into power.According to the aluminium-electrolyzing pre-roaster cathode carbon pieces that may be used for heating 420KA for the heating unit 10 heating aluminium-electrolyzing pre-roaster cathode carbon pieces of the embodiment of the present invention, namely according to the aluminium-electrolyzing pre-roaster cathode carbon pieces that may be used for cast 420KA for the heating unit 10 heating aluminium-electrolyzing pre-roaster cathode carbon pieces of the embodiment of the present invention.
In some embodiments of the invention, the upper cover that Heat preservation cover 101 comprises casing and is removably located on casing, forms the container cavity 1011 of sealing between this casing and this upper cover.
Specifically, this casing comprises base plate and establishes front side board, back side panel, left plate and right side plate on which floor plate.Wherein, left heating tube 102 this left plate contiguous, right heating tube 103 this right side plate contiguous, lower heating tube 104 this base plate contiguous.
Advantageously, left installation bracket, right mounting bracket and lower mounting bracket is comprised according to the embodiment of the present invention further for the heating unit 10 heating aluminium-electrolyzing pre-roaster cathode carbon pieces.This left installation bracket is welded on the left side wall 1012 of container cavity 1011, and this left installation bracket is provided with left open holes, and left heating tube 102 passes this left open holes and is welded on this left installation bracket.This right mounting bracket is welded on the right side wall 1013 of container cavity 1011, and this right mounting bracket is provided with right open holes, and right heating tube 103 passes this right open holes and is welded on this right mounting bracket.This lower mounting bracket is welded on the diapire 1014 of container cavity 1011, and this lower mounting bracket is provided with lower open holes, and lower heating tube 104 passes this lower open holes and is welded on this lower mounting bracket.
Thus left heating tube 102, right heating tube 103 and lower heating tube 104 more easily, firmly can be installed.
Each in left heating tube 102, right heating tube 103 and lower heating tube 104 is the first preset value with the distance of the aluminium-electrolyzing pre-roaster cathode carbon pieces be located in this heating chamber.Advantageously, this first preset value is 100 millimeters-150 millimeters.
In one embodiment of the invention, the resistance of the resistance of left heating tube 102, the resistance of right heating tube 103 and lower heating tube 104 is equal to each other.Left heating tube 102, right heating tube 103 and lower heating tube 104 can be made thus can to produce equal heat, thus this aluminium-electrolyzing pre-roaster cathode carbon pieces can be heated more equably, to avoid this aluminium-electrolyzing pre-roaster cathode carbon pieces to burst in the process of the cast phosphorus pig iron further.
Advantageously, left heating tube 102, right heating tube 103 and lower heating tube 104 are integrally formed.
As shown in Figure 1, in examples more of the present invention, left heating tube 102 is multiple, and right heating tube 103 is multiple, and lower heating tube 104 is multiple.Wherein, multiple left heating tube 102, multiple right heating tube 103 and multiple lower heating tube 104 are arranged at interval along the length direction of this aluminium-electrolyzing pre-roaster cathode carbon pieces.
Left heating tube 102, right heating tube 103 and lower heating tube 104 can be made thus can to produce equal heat, thus this aluminium-electrolyzing pre-roaster cathode carbon pieces can be heated more equably, to avoid this aluminium-electrolyzing pre-roaster cathode carbon pieces to burst in the process of the cast phosphorus pig iron further.Wherein, the length direction of this aluminium-electrolyzing pre-roaster cathode carbon pieces is as shown in the arrow A in Fig. 1.
The antetheca of container cavity 1011 can be provided with nitrogen inlet, the rear wall of container cavity 1011 can be provided with nitrogen outlet.Heat in the process of this aluminium-electrolyzing pre-roaster cathode carbon pieces utilizing heating unit 10; nitrogen can be passed in container cavity 1011 by nitrogen inlet; thus this aluminium-electrolyzing pre-roaster cathode carbon pieces of nitrogen protection not only can be utilized not oxidized, and nitrogen can be utilized after casting complete to cool this aluminium-electrolyzing pre-roaster cathode carbon pieces.
In an example of the present invention, the roof of container cavity 1011 is provided with the first pouring hole, the second pouring hole and the 3rd pouring hole.This first pouring hole is relative with 1/2 place in the longitudinal direction of aluminium-electrolyzing pre-roaster cathode carbon pieces.This second pouring hole and the 3rd pouring hole are relative with 1/3 place in the longitudinal direction of aluminium-electrolyzing pre-roaster cathode carbon pieces respectively.
That is, this aluminium-electrolyzing pre-roaster cathode carbon pieces is halved, to obtain mean line by the length direction of this aluminium-electrolyzing pre-roaster cathode carbon pieces.It will be appreciated by persons skilled in the art that this bisection is the division on geometric meaning, instead of this aluminium-electrolyzing pre-roaster cathode carbon pieces is divided into two independently parts.Wherein, this first pouring hole is relative with this mean line.When pouring into a mould the aluminium-electrolyzing pre-roaster cathode carbon pieces of below 300KA, poured into a mould by this first pouring hole.
By this aluminium-electrolyzing pre-roaster cathode carbon pieces trisection on the length direction of this aluminium-electrolyzing pre-roaster cathode carbon pieces, to obtain two trisection lines.It will be appreciated by persons skilled in the art that this trisection is the division on geometric meaning, instead of this aluminium-electrolyzing pre-roaster cathode carbon pieces is divided into three independently parts.Wherein, this second pouring hole is relative with this trisection line, and the 3rd this trisection line of pouring hole and another is relative.When pouring into a mould 300KA and above aluminium-electrolyzing pre-roaster cathode carbon pieces, poured into a mould by this second pouring hole and the 3rd pouring hole simultaneously.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification sheets or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. for heating a heating unit for aluminium-electrolyzing pre-roaster cathode carbon pieces, it is characterized in that, comprising:
Heat preservation cover, has container cavity in described Heat preservation cover;
Left heating tube and right heating tube, described left heating tube and described right heating tube are located in described container cavity, the left side wall of the contiguous described container cavity of described left heating tube, the right side wall of the contiguous described container cavity of described right heating tube;
Lower heating tube, described lower heating tube is located in described container cavity, the diapire of the contiguous described container cavity of described lower heating tube, wherein said left heating tube, form heating chamber for heating aluminium-electrolyzing pre-roaster cathode carbon pieces between described right heating tube and described lower heating tube, each in described left heating tube, described right heating tube and described lower heating tube is the first preset value with the distance of the aluminium-electrolyzing pre-roaster cathode carbon pieces be located in described heating chamber;
For measuring the temperature sensor of the temperature of described aluminium-electrolyzing pre-roaster cathode carbon pieces, described temperature sensor is located in described heating chamber;
Three-phase alternating-current supply, described three-phase alternating-current supply is switchably connected with triangle wiring or star-star connection by switch, and described triangle wiring is connected with each in described lower heating tube with described left heating tube, described right heating tube with described star-star connection; With
Controller, described controller is connected with described temperature sensor and described switch to control described switch according to the temperature detection value of described temperature sensor and switches between described triangle wiring and described star-star connection.
2. the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to claim 1, is characterized in that, described first preset value is 100 millimeters-150 millimeters.
3. the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to claim 1, it is characterized in that, the upper cover that described Heat preservation cover comprises casing and is removably located on described casing, forms the described container cavity of sealing between described casing and described upper cover.
4. the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to claim 1, is characterized in that, the antetheca of described container cavity is provided with nitrogen inlet, and the rear wall of described container cavity is provided with nitrogen outlet.
5. the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to claim 1, is characterized in that, the resistance of the resistance of described left heating tube, the resistance of described right heating tube and described lower heating tube is equal to each other.
6. the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to any one of claim 1-5, is characterized in that, described left heating tube, described right heating tube and described lower heating tube are integrally formed.
7. the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to any one of claim 1-6, is characterized in that, comprise further:
Left installation bracket, described left installation bracket is welded on the left side wall of described container cavity, and described left installation bracket is provided with left open holes, and described left heating tube passes described left open holes and is welded on described left installation bracket;
Right mounting bracket, described right mounting bracket is welded on the right side wall of described container cavity, and described right mounting bracket is provided with right open holes, and described right heating tube passes described right open holes and is welded on described right mounting bracket; With
Lower mounting bracket, described lower mounting bracket is welded on the diapire of described container cavity, and described lower mounting bracket is provided with lower open holes, and described lower heating tube passes described lower open holes and is welded on described lower mounting bracket.
8. the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to any one of claim 1-7, it is characterized in that, described left heating tube is multiple, described right heating tube is multiple, described lower heating tube is multiple, and multiple described left heating tube, multiple described right heating tube and multiple described lower heating tube are arranged at interval along the length direction of described aluminium-electrolyzing pre-roaster cathode carbon pieces.
9. the heating unit for heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to any one of claim 1-8, it is characterized in that, the roof of described container cavity is provided with the first pouring hole, the second pouring hole and the 3rd pouring hole, described first pouring hole is relative with 1/2 place in the longitudinal direction of described aluminium-electrolyzing pre-roaster cathode carbon pieces, and described second pouring hole and described 3rd pouring hole are relative with 1/3 place in the longitudinal direction of described aluminium-electrolyzing pre-roaster cathode carbon pieces respectively.
10. utilize the heating means implemented for the heating unit heating aluminium-electrolyzing pre-roaster cathode carbon pieces according to any one of claim 1-9, it is characterized in that, described heating means comprise the following steps:
Aluminium-electrolyzing pre-roaster cathode carbon pieces is placed in heating chamber;
Change-over switch is to make three-phase alternating-current supply be connected with triangle wiring, described three-phase alternating-current supply left heating tube, right heating tube and lower heating tube provides electric power, to utilize described left heating tube, described right heating tube and described lower heating tube to heat described aluminium-electrolyzing pre-roaster cathode carbon pieces; With
When the temperature of described aluminium-electrolyzing pre-roaster cathode carbon pieces reaches 590 degrees Celsius, the temperature of described aluminium-electrolyzing pre-roaster cathode carbon pieces to make three-phase alternating-current supply be connected with star-star connection, and is remained on 615 degrees Celsius by change-over switch.
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| CN201510081202.8A CN104694958B (en) | 2015-02-15 | 2015-02-15 | For heating the heater and heating means of aluminium-electrolyzing pre-roaster cathode carbon pieces |
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| CN201510081202.8A CN104694958B (en) | 2015-02-15 | 2015-02-15 | For heating the heater and heating means of aluminium-electrolyzing pre-roaster cathode carbon pieces |
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| CN104694958B CN104694958B (en) | 2017-11-24 |
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| CN202201985U (en) * | 2011-08-23 | 2012-04-25 | 贵阳铝镁设计研究院有限公司 | Cathode carbon block group heater |
| CN102419088A (en) * | 2011-12-09 | 2012-04-18 | 云南铝业股份有限公司 | Graphite cathode carbon block preheating equipment capable of continuously heating in reciprocating mode |
| CN102416461A (en) * | 2011-12-09 | 2012-04-18 | 云南铝业股份有限公司 | Process for casting phosphorus cast iron to carbon graphite cathode carbon blocks |
| CN202705503U (en) * | 2012-04-12 | 2013-01-30 | 七冶炉窑建筑工程有限责任公司 | Assembling heating cover for cathode carbon blocks |
| CN103866349A (en) * | 2014-03-07 | 2014-06-18 | 郑州发祥铝业有限公司 | Cathode block heating device and assembling method of cathode block and cathode steel bar |
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