CN217358023U - Melting zone adjustable electric melting magnesium smelting furnace - Google Patents
Melting zone adjustable electric melting magnesium smelting furnace Download PDFInfo
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- CN217358023U CN217358023U CN202121334321.7U CN202121334321U CN217358023U CN 217358023 U CN217358023 U CN 217358023U CN 202121334321 U CN202121334321 U CN 202121334321U CN 217358023 U CN217358023 U CN 217358023U
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Abstract
The utility model relates to a stove field especially relates to a melting zone adjustable electric melting magnesium smelting furnace. Four vertical hydraulic lifting columns that set up along circumference equipartition on the electric smelting magnesium furnace body: first hydraulic pressure lift post, second hydraulic pressure lift post, third hydraulic pressure lift post, fourth hydraulic pressure lift post, the variable disc in district is melted in the top installation of four hydraulic pressure lift posts, melts and sets up the electric melting magnesium melting district in variable melting district on the variable disc in district, and hydraulic press and drive mechanism's output links to each other with four hydraulic pressure lift posts through the pipeline respectively, and the lower extreme of three vertical electrode extends the electric melting magnesium melting district in variable melting district. The utility model discloses can make the short net length of electric smelting magnesium stove power supply obviously reduce, reduce impedance and reactance, active, idle, power consumption decline, power factor improves, and the whole electric power loss of electric smelting magnesium production major loop reduces 20 ~ 30%, solves in addition the trouble of enclosing the stove in order to enlarge production, also solves because electrode length is decided along with the furnace body, makes the electric smelting magnesium stove develop the difficult scheduling problem to the maximization.
Description
Technical Field
The utility model relates to a stove field especially relates to a melting zone adjustable electric melting magnesium smelting furnace.
Background
Fused magnesia is one of the most important raw materials of refractory materials, and is widely applied to industries such as national defense, medicine, chemical industry, food, paper making and the like. The main process for producing the fused magnesium comprises the following steps: laying bottom materials at the bottom of the electric smelting magnesium furnace, descending an electrode to the bottom material part of the furnace, starting to load magnesite, and carrying out power transmission to smelt according to a power supply curve, wherein the liquid level continuously rises along with the continuous addition and smelting of the magnesite, and the electrode also continuously rises. Therefore, the length of the electrode must be matched with the height of the whole furnace body to ensure that the smelting task of the whole furnace is completed. In fact, during the melting process of the electrically melted magnesium, the electrode sends a large current into the furnace, an electric arc is generated at the tail end of the electrode to convert electric energy into heat energy, meanwhile, the current passes through the burden to generate resistance heat, and the high temperature generated by the two is the melting of the burden. Therefore, the length of the electrodes should be determined not by the height of the furnace, but by the area that can be involved in the melting zone. The length of the electrode at the blow-in stage of the current production process is generally matched with the furnace height, so that the electrode with the length of about 2/3 is only designed to meet the requirements of the length of a furnace body and the rising height of an ore melting surface, and if the length of the electrode with the length of about 2/3 is reduced in a short network power supply system, the total electric power loss of a main loop is reduced by about 30 percent, so that unnecessary loss of the electric power loss of the whole short network is avoided.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide an electric melting magnesium smelting furnace with an adjustable melting zone. The utility model discloses a divide into two upper and lower regions in the furnace body, wherein the first half is electric melting magnesium melting zone, and the latter half is the extended area or has melted liquid and move down crystallization zone. When the melting effect of the upper half part meets the production index requirement, the furnace bottom of the upper part furnace body moves downwards, the meltable area is expanded, the upper distribution system continues to feed, the lower melted area continues to crystallize, and the processes of downward movement of the melted area and feeding are continuously circulated until the production is finished. Therefore, the length of the power supply short network of the fused magnesia furnace is obviously reduced, the impedance and the reactance are reduced, the active power, the reactive power and the power consumption are reduced, the power factor is improved, the total electric power loss of a main loop for producing the fused magnesia is reduced by 20-30%, the trouble that a plurality of manufacturers add a surrounding furnace for expanding production at present is solved, the problem that the fused magnesia furnace is difficult to develop to large scale due to the fact that the length of an electrode is determined along with the furnace body is solved, and the yield is improved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electric smelting magnesium smelting furnace with adjustable smelting zone, comprising: the electric melting magnesium smelting furnace body, the electric melting magnesium melting zone of variable melting zone, the variable disc of melting zone, first hydraulic lifting column, second hydraulic lifting column, third hydraulic lifting column, fourth hydraulic lifting column, hydraulic press and drive mechanism, electrode, concrete structure is as follows:
four vertical hydraulic lifting columns that set up along circumference equipartition on the electric smelting magnesium furnace body: first hydraulic pressure lift post, second hydraulic pressure lift post, third hydraulic pressure lift post, fourth hydraulic pressure lift post, the variable disc in district is melted in the top installation of four hydraulic pressure lift posts, melts and sets up the electric smelting magnesium melting district in variable melting district on the variable disc in district, and hydraulic press and drive mechanism's output links to each other with four hydraulic pressure lift posts through the pipeline respectively, and the lower extreme of three vertical electrode extends the electric smelting magnesium melting district in variable melting district.
The melting zone adjustable electric melting magnesium smelting furnace still includes three motors: the output ends of the three motors are connected with the electrodes through steel wire ropes and fixed pulleys respectively, each steel wire rope is wound on the fixed pulleys, one end of each steel wire rope is connected with the output end of one motor, the other end of each steel wire rope is connected with the upper end of the vertical electrode, and the lower end of each electrode extends to the electric melting magnesium melting area of the variable melting area.
The electric melting magnesium smelting furnace with the adjustable melting zone is characterized in that a first rotary encoder is installed on an output shaft of a first motor, a second rotary encoder is installed on an output shaft of a second motor, and a third rotary encoder is installed on an output shaft of a third motor.
The melting zone adjustable electric melting magnesium smelting furnace is further provided with a controller, the output end of the controller is connected with a hydraulic machine, a transmission mechanism and three motors through circuits respectively, the hydraulic machine, the transmission mechanism and the three motors are driven through the controller, the input end of the controller is connected with a first rotary encoder, a second rotary encoder and a third rotary encoder through circuits respectively, and the electric melting magnesium melting zone of the variable melting zone and the synchronous lifting of the electrodes are controlled.
The melting zone adjustable electric melting magnesium smelting furnace, the hydraulic press and the transmission mechanism drive the hydraulic lifting column to ascend or descend, and further drive the electric melting magnesium melting zone of the variable melting zone on the hydraulic lifting column to ascend or descend through the variable disc of the melting zone.
The melting zone adjustable electric melting magnesium smelting furnace, the electric melting magnesium smelting furnace body sets up on the track and is sliding fit with the track.
The utility model has the advantages and the beneficial effects that:
1. the utility model relates to a melting zone adjustable electric melting magnesium smelting furnace, can be according to the actual furnace body, ore, the size in the electric melting magnesium smelting region is adjusted to the specific parameter of system's environment such as electrode, in the smelting process, the electrode top need not fall to the bottom of electric melting magnesium smelting furnace body, only need keep in the electric melting magnesium smelting region of variable melting zone can, this region remains 1/3 departments on the electric melting magnesium smelting region of variable melting zone throughout, the length of short net system has so significantly reduced, make the length that accounts for the whole electric power loss 40% electrode of electric melting magnesium production major loop reduce 2/3, practice thrift a large amount of electric energy, the development of large-scale furnacification has improved output and economic benefits.
2. Because the utility model discloses the equipment molten zone is adjustable, consequently it is telescopic to have fairly confirmed the furnace body height, has solved at present a lot of producers in order to enlarge the production in addition to enclose the trouble of stove, has also solved because electrode length is decided along with the furnace body, makes the fused magnesia stove develop the difficulty to the upsizing, has improved output.
Drawings
FIG. 1 is a schematic view of an electric melting magnesium smelting furnace with adjustable melting zone;
in the figure, 1 an electric melting magnesium smelting furnace body, 2 an electric melting magnesium melting area of a variable melting area, 3 a variable disk of the melting area, 4 a first hydraulic lifting column, 5 a second hydraulic lifting column, 6 a third hydraulic lifting column, 7 a fourth hydraulic lifting column, 8 a hydraulic press and a transmission mechanism, 9 electrodes, 10-1 a first rotary encoder, 10-2 a second rotary encoder, 10-3 a third rotary encoder, 11 a controller, 12-1 a first motor, 12-2 a second motor, 12-3 a third motor, 13 a steel wire rope, 14 fixed pulleys and 15 tracks.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the electric melting magnesium smelting furnace with adjustable melting zone of the utility model mainly comprises: the electric melting magnesium smelting furnace body 1, the electric melting magnesium melting zone 2 of the variable melting zone, the variable disc 3 of melting zone, the first hydraulic lifting column 4, the second hydraulic lifting column 5, the third hydraulic lifting column 6, the fourth hydraulic lifting column 7, the hydraulic press and the transmission mechanism 8, the electrode 9, the first rotary encoder 10-1, the second rotary encoder 10-2, the third rotary encoder 10-3, the controller 11, the first motor 12-1, the second motor 12-2, the third motor 12-3, the steel wire rope 13, the fixed pulley 14, the track 15, the concrete structure is as follows:
electric melting magnesium smelting furnace body 1 sets up on track 15 and is sliding fit with track 15, and electric melting magnesium smelting furnace body 1 goes up along the hydraulic pressure lift post of four vertical settings of circumference equipartition: first hydraulic pressure lift post 4, second hydraulic pressure lift post 5, third hydraulic pressure lift post 6, fourth hydraulic pressure lift post 7, the variable disc 3 in district is melted in the top installation of four hydraulic pressure lift posts, set up the electric smelting magnesium melting district 2 of variable melting district on the variable disc 3 in district, hydraulic press and drive mechanism 8's output links to each other with four hydraulic pressure lift posts through the pipeline respectively, hydraulic press and 8 drive hydraulic pressure lift rising or decline of post of drive, further through the electric smelting magnesium melting district 2 lift of the variable melting district on the variable disc 3 drive of melting district in district.
The output ends of three motors (a first motor 12-1, a second motor 12-2 and a third motor 12-3) are respectively connected with the electrodes 9 through steel wire ropes 13 and fixed pulleys 14, each steel wire rope 13 is wound on the fixed pulley 14, one end of each steel wire rope 13 is connected with the output end of one motor, the other end of each steel wire rope 13 is connected with the upper end of the vertical electrode 9, and the lower end of each electrode 9 extends to the electric smelting magnesium smelting region 2 of the variable smelting region; a first rotary encoder 10-1 is installed on an output shaft of the first motor 12-1, a second rotary encoder 10-2 is installed on an output shaft of the second motor 12-2, and a third rotary encoder 10-3 is installed on an output shaft of the third motor 12-3.
The output end of the controller 11 is respectively connected with the hydraulic machine and the transmission mechanism 8 and the three motors through lines, the hydraulic machine and the transmission mechanism 8 and the three motors are driven through the controller 11, and the input end of the controller 11 is respectively connected with the first rotary encoder 10-1, the second rotary encoder 10-2 and the third rotary encoder 10-3 through lines.
The utility model designs the hardware structure of the electric smelting magnesium furnace which meets various volumes on the premise of ensuring the best melting area of the electric smelting magnesium furnace; in the present day that the electric smelting magnesium furnace continuously tends to be large-scale, no matter how high the electric smelting magnesium furnace body is designed, new equipment and materials of a short network power supply system cannot be added, and the length of an electrode is obviously reduced.
The structure design is as follows: the electric melting magnesium melting area 2 of the variable melting area is arranged above the inner part of the electric melting magnesium melting furnace body 1, the size of the electric melting magnesium melting area 2 of the variable melting area is controlled by the lifting of the variable melting area disc 3, and the lifting of the variable melting area disc 3 is driven by a first hydraulic lifting column 4, a second hydraulic lifting column 5, a third hydraulic lifting column 6, a fourth hydraulic lifting column 7, a hydraulic press and a transmission mechanism 8; the controller 11 controls the lifting of the electrode 9 and the synchronous lifting of the electric melting magnesium melting area 2 of the variable melting area and the electrode 9 according to the production condition; in the smelting process, the top end of the electrode 9 does not need to be lowered to the bottom of the electric smelting magnesium smelting furnace body 1, and only needs to be kept in the electric smelting magnesium smelting region 2 of the variable smelting region, and the region is always kept at the upper 1/3 of the electric smelting magnesium smelting region of the variable smelting region; the controller 11 coordinates the lifting of the control electrode to ensure the balanced current, voltage and electric power of three phases; the lifting is kept within the minimum smelting range; when the melting zone variable disk 3 moves downwards, the electrode 9 can be kept to move synchronously with the electro-fused magnesium melting zone 2 of the variable melting zone through the controller 11, the electrode 9 is always kept in a normal melting working state, and short circuit or short circuit phenomenon does not occur.
The controller adopts an s7-1200 programmable controller, realizes the lifting control of the electrode through the programmable controller, and collects the lifting distance of the electrode 9 through a rotary encoder; the speed of the melting zone variable disc 3 is controlled to regulate the flow of a hydraulic actuating element through a flow control valve, and the hydraulic transmission realizes stepless speed regulation by virtue of a hydraulic box; the controller 11 obtains the descending time and speed of the melting zone variable disk 3, synchronously descends the electrode 9 and always keeps the electrode 9 in the original arc zone state unchanged.
The utility model discloses a theory of operation and working process as follows:
as shown in figure 1, the electric melting magnesium smelting furnace with adjustable melting zone of the utility model has the following principle: principle of producing fused magnesium according to electric arc furnace and loss power formula P R ＝3I 2 R, namely, the electrode 9 sends a large current into the furnace in the melting process of the electric melting magnesium, electric arc is generated at the tail end of the electrode 9 to convert electric energy into heat energy, meanwhile, the current passes through the furnace burden to generate resistance heat, and the high-temperature furnace burden generated by the electrode 9 and the furnace burden is melted. Generally, it takes 10 hours to produce a single furnace of fused magnesia, and the electrode elevation is about 3m, and the average elevation per minute is 0.005 m. Therefore, the length of the electrodes should be determined not by the height of the furnace, but by the area that can be involved in the melting zone. Reducing the resistance of the line is one of the most effective ways to reduce power loss in the electric magnesium melting furnace. According to the formula of power loss P R ＝3I 2 R is that the power loss is proportional to the linear resistance, and the main means for reducing the resistance is to shorten the length of the electrode when the diameter of the electrode is constant. The production of the fused magnesia is low-voltage and high-current production, the average production current is about 10000A, and if the electrode length close to 2/3 is reduced in a short-network power supply system, the fused magnesia occupies the whole electric work of a main loop of the fused magnesia productionThe electrode loss of 40% of the rate loss is reduced by more than 2/3, and a large amount of electric energy is saved.
The working process is as follows: the electric smelting magnesium furnace body capable of meeting the yield to the maximum is designed, and production parameters capable of meeting the smelting conditions are input so as to meet the requirement of the size of a smelting zone and the descending distance and speed of a variable disk of the smelting zone. The utility model discloses the controller links to each other with whole production control system, can independent control again can link to each other with whole production automatic control system. And starting an automatic production control system in the production process, and automatically moving the melting zone variable disc to a position with the size of the set melting zone. The automatic blanking of the system is controlled according to the production condition, the arcing of the electro-fused magnesia furnace is controlled, and the lifting of the electrode is adjusted in time according to the furnace condition, so that the balance of three-phase current, voltage and power and the size of an arc area are ensured. The controller 11 analyzes the size of the fused magnesium melting area 2 of the variable melting area according to the rotary encoder, timely reduces the variable disk 3 of the melting area through the hydraulic press and the transmission mechanism 8, sinks the melted solution to be crystallized and continuously expands a new melting area. The whole system is continuously fed, so that the electric melting magnesium smelting furnace body 1 and the electrode are synchronously adjusted, a new melting zone is established at the upper part of the electric melting magnesium smelting furnace body 1, and the molten magnesium is melted to be crystallized until the yield requirement index is reached.
The results show that:
1. the utility model relates to a melting zone adjustable electric melting magnesium smelting furnace can be based on the suitable operating mode adjustment electric melting magnesium of the specific parameter of system's environment such as actual furnace body, ore, electrode and smelt regional size, and in the smelting process, the electrode top need not fall to the bottom of electric melting magnesium smelting furnace body, only need keep in the electric melting magnesium melting zone of variable melting zone can, reduced system impedance, practiced thrift a large amount of electric energy.
2. Because the utility model discloses the equipment molten zone is adjustable, consequently is equivalent to having confirmed the high scalability of furnace body, has solved the bottleneck problem of electric smelting magnesium stove to the macro-scale development, has improved output and economic benefits.
Claims (6)
1. The utility model provides a melting zone adjustable electric melting magnesium smelting furnace which characterized in that includes: electric smelting magnesium smelting furnace body, the electric smelting magnesium melting zone in variable melting zone, the variable disc in melting zone, first hydraulic lifting column, second hydraulic lifting column, third hydraulic lifting column, fourth hydraulic lifting column, hydraulic press and drive mechanism, electrode, concrete structure as follows:
four vertical hydraulic lifting columns that set up along circumference equipartition on the electric smelting magnesium furnace body: first hydraulic pressure lift post, second hydraulic pressure lift post, third hydraulic pressure lift post, fourth hydraulic pressure lift post, the variable disc in district is melted in the top installation of four hydraulic pressure lift posts, melts and sets up the electric melting magnesium melting district in variable melting district on the variable disc in district, and hydraulic press and drive mechanism's output links to each other with four hydraulic pressure lift posts through the pipeline respectively, and the lower extreme of three vertical electrode extends the electric melting magnesium melting district in variable melting district.
2. An electro-fused magnesium smelting furnace with adjustable melting zone as claimed in claim 1, further comprising three motors: the output ends of the three motors are respectively connected with the electrodes through steel wire ropes and fixed pulleys, each steel wire rope is wound on the fixed pulleys, one end of each steel wire rope is connected with the output end of one motor, the other end of each steel wire rope is connected with the upper end of each vertical electrode, and the lower end of each electrode extends to the electric melting magnesium melting area of the variable melting area.
3. An electro-fused magnesium smelting furnace with an adjustable melting zone as claimed in claim 2, wherein the output shaft of the first motor is provided with a first rotary encoder, the output shaft of the second motor is provided with a second rotary encoder, and the output shaft of the third motor is provided with a third rotary encoder.
4. The electric smelting magnesium melting furnace with adjustable melting zone according to claim 3, further comprising a controller, wherein the output end of the controller is connected with the hydraulic machine and the transmission mechanism and the three motors through lines respectively, the hydraulic machine and the transmission mechanism and the three motors are driven through the controller, and the input end of the controller is connected with the first rotary encoder, the second rotary encoder and the third rotary encoder through lines respectively to control the synchronous lifting of the electric smelting magnesium melting zone of the variable melting zone and the electrodes.
5. A melting zone adjustable electrofused magnesium melting furnace as claimed in claim 1, wherein the hydraulic press and the driving mechanism drive the hydraulic elevating column to ascend or descend, and further drive the electrofused magnesium melting zone of the variable melting zone thereon to ascend or descend by the variable melting zone disk.
6. An electro-fused magnesium smelting furnace with an adjustable melting zone as claimed in claim 1, wherein the electro-fused magnesium smelting furnace body is arranged on the rail and is in sliding fit with the rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121334321.7U CN217358023U (en) | 2021-06-16 | 2021-06-16 | Melting zone adjustable electric melting magnesium smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121334321.7U CN217358023U (en) | 2021-06-16 | 2021-06-16 | Melting zone adjustable electric melting magnesium smelting furnace |
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| Publication Number | Publication Date |
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| CN217358023U true CN217358023U (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121334321.7U Active CN217358023U (en) | 2021-06-16 | 2021-06-16 | Melting zone adjustable electric melting magnesium smelting furnace |
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| CN (1) | CN217358023U (en) |
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2021
- 2021-06-16 CN CN202121334321.7U patent/CN217358023U/en active Active
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