CN105274573A - Automatic alumina feeding system for aluminium electrolysis - Google Patents
Automatic alumina feeding system for aluminium electrolysis Download PDFInfo
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- CN105274573A CN105274573A CN201510726644.3A CN201510726644A CN105274573A CN 105274573 A CN105274573 A CN 105274573A CN 201510726644 A CN201510726644 A CN 201510726644A CN 105274573 A CN105274573 A CN 105274573A
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Abstract
The invention discloses an automatic alumina feeding system for aluminium electrolysis. The system is characterized by comprising a concentration detecting sensor (8), a variable frequency motor (1), an alumina booster pump (2), a feeding box (3), a buffer (4), a conveying tube (9), a pressure gauge (5), a solenoid valve (6), and an automatic control system (7). With the adoption of the system, the concentration of alumina in an aluminum electrolytic cell can be detected; if the concentration of alumina is relatively low, alumina can be automatically fed into the aluminum electrolytic cell; if that the concentration of alumina in the aluminum electrolytic cell is sufficient is detected, alumina can be automatically stopped feeding into the aluminum electrolytic cell. Therefore, the concentration of alumina can remain stable during aluminum electrolysis; the problem that constant fluctuating of the concentration of alumina results in the increase of the electricity consumption and material consumption and reduction of efficiency of aluminum electrolysis can be avoided.
Description
Technical field
The present invention relates to field of aluminum electrolysis, specifically refer to a kind of aluminum oxide automatic feeding system used for aluminium electrolysis.
Background technology
What Aluminium Electrolysis adopted is fused salt electrolysis technique, and make equipment with aluminium cell, electrolysis raw material made by aluminum oxide, generates metallic aluminium with cryolite electrolyte dissolved oxygen aluminium through electrochemical reaction.The aluminum oxide dissolved in the electrolyte constantly consumes in electrolytic process, aluminium cell has several alumina reservoir and several alumina feeding device to supplement.Present alumina feeding device is all by the volumetric feeder of air cylinder driven.This volumetric feeder has a fixing room, the opening for feed of an interlock and discharge port, and cylinder action one comes and goes, and feeder completes and once fills material and discharge, by the alumina material of hopper, is quantitatively added in electrolyzer.
In the process of electrolysis of aluminum, alumina concentration change has considerable influence to electrolytical liquidus temperature, electric conductivity, and then affect temperature and the power consumption of electrolysis, therefore alumina concentration is a very important controling parameters in Aluminium Electrolysis process, alumina concentration control is proper, just can obtain excellent productive capacity.In order to enhance productivity, reduce power consumption, the fluctuation of alumina concentration in electrolysis production, will be reduced as far as possible.But, traditional alumina feeding device can only be simple carry out interpolation aluminum oxide in aluminium cell, and cannot feed in raw material as required according to the concentration of aluminum oxide in electrolyzer, this just cannot well make alumina concentration remain stable, make the power consumption of electrolysis of aluminum, material consumption increase, lower efficiency.
Summary of the invention
The object of the invention is to overcome traditional alumina feeding device to feed in raw material as required according to the concentration of aluminum oxide in electrolyzer, alumina concentration can not be well made to remain stable, make the power consumption of electrolysis of aluminum, material consumption increase, the defect lowered efficiency, provides a kind of aluminum oxide automatic feeding system used for aluminium electrolysis.
The following technical scheme of object of the present invention realizes: a kind of aluminum oxide automatic feeding system used for aluminium electrolysis, by concentration detection sensor, variable-frequency motor, the aluminum oxide force (forcing) pump be connected with the power output shaft of variable-frequency motor, be arranged on the charging box at aluminum oxide force (forcing) pump opening for feed place, the snubber that opening for feed is connected with the discharge port of aluminum oxide force (forcing) pump, the carrier pipe be connected with the discharge port of snubber, be arranged on the pressure warning unit on snubber, be arranged on the magnetic valve on carrier pipe, and respectively with magnetic valve, the automatic control system composition that variable-frequency motor is connected with concentration detection sensor.
Further, described automatic control system is then by transformer T, the voltage input circuit be connected with the telefault L2 on the former limit of transformer T, the signal triggering circuit be connected with voltage input circuit, the logic switching circuit be connected with signal triggering circuit, the solenoid valve control circuit be connected with the telefault L3 of transformer T secondary, and the variable frequency motor-driving circuit be connected with the telefault L4 of transformer T secondary forms; Described logic switching circuit is also connected with the telefault L2 on the former limit of transformer T.
Described voltage input circuit is by triode VT1, triode VT2, the inductance L 1 that one end is connected with the collector electrode of triode VT1, the other end then forms the input terminus of this voltage input circuit together with the base stage of triode VT1, be serially connected in the resistance R1 between the collector electrode of triode VT1 and base stage, N pole is connected with the base stage of triode VT1, the Zener diode D1 of P pole ground connection, and the diode D2 that P pole is connected with the emtting electrode of triode VT1 after resistance R2, N pole is then connected with signal triggering circuit forms; Described triode VT1 collector electrode is connected with the Same Name of Ends of the telefault L2 on the former limit of transformer T, its base stage is then connected with the collector electrode of triode VT2, emtting electrode is then connected with the base stage of triode VT2; The emtting electrode of described triode VT2 is connected with the P pole of diode D2.
Described signal triggering circuit are by process chip U1, the diode D4 that N pole is connected with the GROUND pin of process chip U1 after electric capacity C2 through electric capacity C3 in turn, P pole is then connected with the VREF pin of process chip U1, the diode D3 that N pole is connected with the RT/CT pin of process chip U1, P pole is then connected with the GROUND pin of process chip U1 after electric capacity C1, and positive pole forms with the electric capacity C4 that RFB pin is connected, negative pole is then connected with logic switching circuit after resistance R3 of process chip U1; The N pole of described diode D4 is also connected with the CURRENT pin of process chip U1; The GROUND pin ground connection of described process chip U1, its VI pin is then connected with the N pole of diode D2, OUTPUT pin is then connected with logic switching circuit, its RFB pin forms signal input part together with CURRENT pin, and this signal input part is then connected with the signal output part of concentration detection sensor.
Described logic switching circuit is by field effect transistor MOS, and XOR gate P, resistance R4, resistance R5, resistance R6 and resistance R7 form; Resistance R4 is serially connected between the OUTPUT pin of process chip U1 and the grid of field effect transistor MOS; One end of resistance R5 is then connected with the grid of field effect transistor MOS, its other end then ground connection; The described positive pole of XOR gate P is connected with the drain electrode of field effect transistor MOS, its negative pole then after resistance R7 ground connection, output terminal be then connected with the non-same polarity of the telefault L2 on the former limit of transformer T; Described one end of resistance R6 is connected with the source electrode of field effect transistor MOS, its other end is then connected with the negative pole of XOR gate P after resistance R7; The source electrode of described field effect transistor MOS is also connected with the negative pole of electric capacity C4 after resistance R3.
Described solenoid valve control circuit is by three-terminal voltage-stabilizing chip U2, the diode D6 that P pole is connected with the non-same polarity of the telefault L3 of transformer T secondary, N pole is then connected with the IN pin of three-terminal voltage-stabilizing chip U2, the diode D5 that P pole is connected with the Same Name of Ends of the telefault L3 of transformer T secondary, N pole is then connected with the GND pin of three-terminal voltage-stabilizing chip U2 after electric capacity C5, and one end is connected with the OUT pin of three-terminal voltage-stabilizing chip U2, the other end then together with the N pole of diode D5 the inductance L 5 of formation control signal output part form; This control signal output terminal is then connected with the control end of magnetic valve.
Described variable frequency motor-driving circuit is by triode VT3, triode VT4, be serially connected in the potentiometer R8 between the Same Name of Ends of the telefault L4 of transformer T secondary and non-same polarity, one end is connected with the sliding end of potentiometer R8, the resistance R9 that the other end is then connected with the base stage of triode VT4, one end is connected with the collector electrode of triode VT4, the resistance R11 of the other end ground connection, be serially connected in the resistance R10 between the base stage of triode VT3 and the collector electrode of triode VT4, and N pole is connected with the non-same polarity of the telefault L4 of transformer T secondary, the diode D7 that P pole is then connected with the emtting electrode of triode VT4 forms, the emtting electrode of described triode VT3 is connected with the Same Name of Ends of the telefault L4 of transformer T secondary, and its collector electrode is then connected with the base stage of triode VT4, the N pole of described diode D7 forms actuate signal output terminal together with its P pole, and this actuate signal output terminal is then connected with variable-frequency motor.
In order to reach better result of use, described process chip U1 is preferably UC3843B unicircuit, and described three-terminal voltage-stabilizing chip U2 is then preferably 79L09 unicircuit.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the present invention can detect the concentration of aluminum oxide in aluminium cell, then aluminum oxide can be added in trend aluminium cell when the concentration of aluminum oxide is on the low side, then can automatically stop when detecting that in aluminium cell, the concentration of aluminum oxide is enough adding aluminum oxide in aluminium cell, thus make the concentration of aluminum oxide in aluminium electrolysis process remain stable, avoid the concentration because of aluminum oxide not stop to fluctuate and cause the power consumption of electrolysis of aluminum, material consumption increases, lower efficiency.
(2) the present invention is provided with automatic control system, automatically can control whole reinforced process, and its control accuracy is high by this automatic control system, avoids bringing detrimentally affect because of mal-operation to aluminium electrolysis process.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the circuit structure diagram of automatic control system of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, aluminum electrolyzing cell used aluminum oxide automatic feeding system of the present invention, by being arranged in aluminium cell 10 for detecting the concentration detection sensor 8 of aluminium cell 10 internal oxidition aluminum concentration, variable-frequency motor 1, the aluminum oxide force (forcing) pump 2 be connected with the power output shaft of variable-frequency motor 1, be arranged on the charging box 3 at aluminum oxide force (forcing) pump 2 opening for feed place, the snubber 4 that opening for feed is connected with the discharge port of aluminum oxide force (forcing) pump 2, the carrier pipe 9 be connected with the discharge port of snubber 4, be arranged on the pressure warning unit 5 on snubber 4, be arranged on the magnetic valve 6 on carrier pipe 9, and respectively with magnetic valve 6, the automatic control system 7 that variable-frequency motor 1 is connected with concentration detection sensor 8 forms.
During work, charging box 3 adds aluminum oxide from the opening for feed of aluminum oxide force (forcing) pump 2, and variable-frequency motor 1 drives the pressurization of aluminum oxide force (forcing) pump 2 oxidizing aluminium, aluminum oxide is entered in aluminium cell 10 after snubber 4 and carrier pipe 9 and carries out electrolysis.Snubber 4 pairs of aluminum oxide add the effect playing buffering, make the add-on of aluminum oxide control more accurate.Pressure warning unit 5 can detect aluminum oxide force (forcing) pump 2 applied pressure values.The alumina concentration value that automatic control system 7 can detect according to concentration detection sensor 8 judges whether the add-on that need increase or reduce aluminum oxide, and the rotating speed of the folding of Controlling solenoid valve 6 and variable-frequency motor 1 carrys out the add-on of controlled oxidization aluminium.
In order to reach better control effects, as shown in Figure 2, this automatic control system 7 is by transformer T, the voltage input circuit be connected with the telefault L2 on the former limit of transformer T, the signal triggering circuit be connected with voltage input circuit, the logic switching circuit be connected with signal triggering circuit, the solenoid valve control circuit be connected with the telefault L3 of transformer T secondary, and the variable frequency motor-driving circuit be connected with the telefault L4 of transformer T secondary forms; Described logic switching circuit is also connected with the telefault L2 on the former limit of transformer T.
Described voltage input circuit is by triode VT1, and triode VT2, inductance L 1, resistance R1, resistance R2, Zener diode D1 and diode D2 form.
Wherein, between the collector electrode that resistance R1 is serially connected in triode VT1 and base stage, the N pole of Zener diode D1 is connected with the base stage of triode VT1, its P pole ground connection, triode VT1 collector electrode is connected with the Same Name of Ends of the telefault L2 on the former limit of transformer T, its base stage is then connected with the collector electrode of triode VT2, emtting electrode is then connected with the base stage of triode VT2.By said structure, resistance R1, Zener diode D1, triode VT1 and triode VT2 then form a voltage stabilizing step-down transformer.
Simultaneously, the input terminus that one end of inductance L 1 is connected with the collector electrode of triode VT1, its other end then forms this voltage input circuit together with the base stage of triode VT1, the P pole of diode D2 is connected with the emtting electrode of triode VT1 after resistance R2, its N pole is then connected with signal triggering circuit, and the emtting electrode of described triode VT2 is also connected with the P pole of diode D2.When voltage is come in from voltage input end input, initiating signal triggering circuit after the process of voltage stabilizing step-down transformer.
Signal triggering circuit can receive the alumina concentration signal that concentration detection sensor 8 transmits, and judge concentration signal, and send corresponding triggering signal to logic switching circuit.It is by process chip U1, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, and resistance R3 and diode D4 forms.Wherein, process chip U1 effect control center, it preferentially adopts UC3843B unicircuit to realize.
When connecting, the N pole of diode D4 is connected with the GROUND pin of process chip U1 after electric capacity C2 through electric capacity C3 in turn, its P pole is then connected with the VREF pin of process chip U1.The N pole of diode D3 is connected with the RT/CT pin of process chip U1, its P pole is then connected with the GROUND pin of process chip U1 after electric capacity C1.The positive pole of electric capacity C4 is connected with the RFB pin of process chip U1, its negative pole is then connected with logic switching circuit after resistance R3.
Meanwhile, the N pole of described diode D4 is also connected with the CURRENT pin of process chip U1; The GROUND pin ground connection of described process chip U1, its VI pin is then connected with the N pole of diode D2, OUTPUT pin is then connected with logic switching circuit, its RFB pin forms signal input part together with CURRENT pin, and this signal input part is then connected with the signal output part of concentration detection sensor 8.
Just start treatment chip U1 after voltage input is come in, meanwhile, process chip U1 receives the alumina concentration signal that concentration detection sensor 8 transmits and also judges; Its OUTPUT pin output low level when alumina concentration is low; Otherwise its OUTPUT pin exports high level when alumina concentration height.Electric capacity C1 in circuit, electric capacity C2, diode D3, electric capacity C3 and diode D4 form integral form setter, its pulse width that process chip U1 can be regulated to export, thus regulate the voltage amplitude that process chip U1 exports.
Described logic switching circuit is then by field effect transistor MOS, and XOR gate P, resistance R4, resistance R5, resistance R6 and resistance R7 form.
During connection, resistance R4 is serially connected between the OUTPUT pin of process chip U1 and the grid of field effect transistor MOS; One end of resistance R5 is then connected with the grid of field effect transistor MOS, its other end then ground connection; The described positive pole of XOR gate P is connected with the drain electrode of field effect transistor MOS, its negative pole then after resistance R7 ground connection, output terminal be then connected with the non-same polarity of the telefault L2 on the former limit of transformer T; Described one end of resistance R6 is connected with the source electrode of field effect transistor MOS, its other end is then connected with the negative pole of XOR gate P after resistance R7; The source electrode of described field effect transistor MOS is also connected with the negative pole of electric capacity C4 after resistance R3.
Field effect transistor MOS and XOR gate P not conducting when process chip U1 output low level, field effect transistor MOS and XOR gate P conducting when process chip U1 exports high level, transformer T is obtained electric, and then make solenoid valve control circuit and variable frequency motor-driving circuit obtain electric work.
Described solenoid valve control circuit is by three-terminal voltage-stabilizing chip U2, the diode D6 that P pole is connected with the non-same polarity of the telefault L3 of transformer T secondary, N pole is then connected with the IN pin of three-terminal voltage-stabilizing chip U2, the diode D5 that P pole is connected with the Same Name of Ends of the telefault L3 of transformer T secondary, N pole is then connected with the GND pin of three-terminal voltage-stabilizing chip U2 after electric capacity C5, and one end is connected with the OUT pin of three-terminal voltage-stabilizing chip U2, the other end then together with the N pole of diode D5 the inductance L 5 of formation control signal output part form; This control signal output terminal is then connected with the control end of magnetic valve 6.In order to better implement the present invention, described three-terminal voltage-stabilizing chip U2 preferentially selects 79L09 unicircuit to realize.Inductance L 5 preferentially uses coupling inductance.
Described variable frequency motor-driving circuit is by triode VT3, triode VT4, be serially connected in the potentiometer R8 between the Same Name of Ends of the telefault L4 of transformer T secondary and non-same polarity, one end is connected with the sliding end of potentiometer R8, the resistance R9 that the other end is then connected with the base stage of triode VT4, one end is connected with the collector electrode of triode VT4, the resistance R11 of the other end ground connection, be serially connected in the resistance R10 between the base stage of triode VT3 and the collector electrode of triode VT4, and N pole is connected with the non-same polarity of the telefault L4 of transformer T secondary, the diode D7 that P pole is then connected with the emtting electrode of triode VT4 forms, the emtting electrode of described triode VT3 is connected with the Same Name of Ends of the telefault L4 of transformer T secondary, and its collector electrode is then connected with the base stage of triode VT4, the N pole of described diode D7 forms actuate signal output terminal together with its P pole, and this actuate signal output terminal is then connected with variable-frequency motor 1.The rotating speed of this variable-frequency motor 1 is decided by the voltage swing be added in triode VT4 base stage.
During work, process chip U1 obtains electric startup and receives the alumina concentration signal detected by concentration detection sensor 8, sends corresponding triggering signal according to alumina concentration signal simultaneously.Represent that when alumina concentration high the amount of aluminium cell 10 internal oxidition aluminium is enough, do not need to feed in raw material, at this moment process chip U1 sends lower level, logic switching circuit not conducting, solenoid valve control circuit and variable frequency motor-driving circuit do not work, and magnetic valve 6 closes, and variable-frequency motor 8 does not work.Represent when alumina concentration is low and need add aluminum oxide in aluminium cell 10, at this moment process chip U1 sends high level, logic switching circuit conducting, solenoid valve control circuit and variable frequency motor-driving circuit obtain electric work, magnetic valve 6 is opened, variable-frequency motor 8 works, thus starts aluminum oxide force (forcing) pump 2 to aluminum oxide supercharging, aluminum oxide is entered in aluminium cell 10 after snubber 4 and carrier pipe 9 and realizes feeding in raw material.
As mentioned above, just well the present invention can be realized.
Claims (7)
1. an aluminum oxide automatic feeding system used for aluminium electrolysis, it is characterized in that, by concentration detection sensor (8), variable-frequency motor (1), the aluminum oxide force (forcing) pump (2) be connected with the power output shaft of variable-frequency motor (1), be arranged on the charging box (3) at aluminum oxide force (forcing) pump (2) opening for feed place, the snubber (4) that opening for feed is connected with the discharge port of aluminum oxide force (forcing) pump (2), the carrier pipe (9) be connected with the discharge port of snubber (4), be arranged on the pressure warning unit (5) on snubber (4), be arranged on the magnetic valve (6) on carrier pipe (9), and respectively with magnetic valve (6), automatic control system (7) composition that variable-frequency motor (1) is connected with concentration detection sensor (8), described automatic control system (7) is then by transformer T, the voltage input circuit be connected with the telefault L2 on the former limit of transformer T, the signal triggering circuit be connected with voltage input circuit, the logic switching circuit be connected with signal triggering circuit, the solenoid valve control circuit be connected with the telefault L3 of transformer T secondary, and the variable frequency motor-driving circuit be connected with the telefault L4 of transformer T secondary forms, described logic switching circuit is also connected with the telefault L2 on the former limit of transformer T.
2. one according to claim 1 aluminum oxide automatic feeding system used for aluminium electrolysis, it is characterized in that, described voltage input circuit is by triode VT1, triode VT2, one end is connected with the collector electrode of triode VT1, the other end then forms the inductance L 1 of the input terminus of this voltage input circuit together with the base stage of triode VT1, be serially connected in the resistance R1 between the collector electrode of triode VT1 and base stage, N pole is connected with the base stage of triode VT1, the Zener diode D1 of P pole ground connection, and P pole is connected with the emtting electrode of triode VT1 after resistance R2, the diode D2 that N pole is then connected with signal triggering circuit forms, described triode VT1 collector electrode is connected with the Same Name of Ends of the telefault L2 on the former limit of transformer T, its base stage is then connected with the collector electrode of triode VT2, emtting electrode is then connected with the base stage of triode VT2, the emtting electrode of described triode VT2 is connected with the P pole of diode D2.
3. one according to claim 2 aluminum oxide automatic feeding system used for aluminium electrolysis, it is characterized in that, described signal triggering circuit are by process chip U1, N pole is connected with the GROUND pin of process chip U1 after electric capacity C2 through electric capacity C3 in turn, the diode D4 that P pole is then connected with the VREF pin of process chip U1, N pole is connected with the RT/CT pin of process chip U1, the diode D3 that P pole is then connected with the GROUND pin of process chip U1 after electric capacity C1, and positive pole is connected with the RFB pin of process chip U1, the electric capacity C4 that negative pole is then connected with logic switching circuit after resistance R3 forms, the N pole of described diode D4 is also connected with the CURRENT pin of process chip U1, the GROUND pin ground connection of described process chip U1, its VI pin is then connected with the N pole of diode D2, OUTPUT pin is then connected with logic switching circuit, its RFB pin forms signal input part together with CURRENT pin, and this signal input part is then connected with the signal output part of concentration detection sensor (8).
4. one according to claim 3 aluminum oxide automatic feeding system used for aluminium electrolysis, is characterized in that, described logic switching circuit is by field effect transistor MOS, and XOR gate P, resistance R4, resistance R5, resistance R6 and resistance R7 form; Resistance R4 is serially connected between the OUTPUT pin of process chip U1 and the grid of field effect transistor MOS; One end of resistance R5 is then connected with the grid of field effect transistor MOS, its other end then ground connection; The described positive pole of XOR gate P is connected with the drain electrode of field effect transistor MOS, its negative pole then after resistance R7 ground connection, output terminal be then connected with the non-same polarity of the telefault L2 on the former limit of transformer T; Described one end of resistance R6 is connected with the source electrode of field effect transistor MOS, its other end is then connected with the negative pole of XOR gate P after resistance R7; The source electrode of described field effect transistor MOS is also connected with the negative pole of electric capacity C4 after resistance R3.
5. one according to claim 4 aluminum oxide automatic feeding system used for aluminium electrolysis, it is characterized in that, described solenoid valve control circuit is by three-terminal voltage-stabilizing chip U2, P pole is connected with the non-same polarity of the telefault L3 of transformer T secondary, the diode D6 that N pole is then connected with the IN pin of three-terminal voltage-stabilizing chip U2, P pole is connected with the Same Name of Ends of the telefault L3 of transformer T secondary, the diode D5 that N pole is then connected with the GND pin of three-terminal voltage-stabilizing chip U2 after electric capacity C5, and one end is connected with the OUT pin of three-terminal voltage-stabilizing chip U2, the other end then together with the N pole of diode D5 the inductance L 5 of formation control signal output part form, this control signal output terminal is then connected with the control end of magnetic valve (6).
6. one according to claim 5 aluminum oxide automatic feeding system used for aluminium electrolysis, it is characterized in that, described variable frequency motor-driving circuit is by triode VT3, triode VT4, be serially connected in the potentiometer R8 between the Same Name of Ends of the telefault L4 of transformer T secondary and non-same polarity, one end is connected with the sliding end of potentiometer R8, the resistance R9 that the other end is then connected with the base stage of triode VT4, one end is connected with the collector electrode of triode VT4, the resistance R11 of the other end ground connection, be serially connected in the resistance R10 between the base stage of triode VT3 and the collector electrode of triode VT4, and N pole is connected with the non-same polarity of the telefault L4 of transformer T secondary, the diode D7 that P pole is then connected with the emtting electrode of triode VT4 forms, the emtting electrode of described triode VT3 is connected with the Same Name of Ends of the telefault L4 of transformer T secondary, and its collector electrode is then connected with the base stage of triode VT4, the N pole of described diode D7 forms actuate signal output terminal together with its P pole, and this actuate signal output terminal is then connected with variable-frequency motor (1).
7. one according to claim 6 aluminum oxide automatic feeding system used for aluminium electrolysis, is characterized in that, described process chip U1 is UC3843B unicircuit, and described three-terminal voltage-stabilizing chip U2 is then 79L09 unicircuit.
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| CN106011942A (en) * | 2016-07-29 | 2016-10-12 | 四川华索自动化信息工程有限公司 | Signal-level-control-circuit-based automatic feeding control system for aluminum electrolysis |
| CN106011940A (en) * | 2016-07-29 | 2016-10-12 | 四川华索自动化信息工程有限公司 | High-precision automatic feeding control system for aluminum electrolysis |
| CN106086939A (en) * | 2016-07-29 | 2016-11-09 | 四川华索自动化信息工程有限公司 | A kind of aluminium oxide auto feed control system used for aluminium electrolysis |
| CN106149005A (en) * | 2016-07-29 | 2016-11-23 | 四川华索自动化信息工程有限公司 | A kind of auto feed control system used for aluminium electrolysis based on ICLC |
| CN106191928A (en) * | 2016-07-29 | 2016-12-07 | 四川华索自动化信息工程有限公司 | A kind of many processing of circuit type auto feed used for aluminium electrolysis control system |
| CN106222701A (en) * | 2016-07-29 | 2016-12-14 | 四川华索自动化信息工程有限公司 | A kind of based on the auto feed control system used for aluminium electrolysis comparing amplifying circuit |
| CN107227468A (en) * | 2017-07-31 | 2017-10-03 | 赣州市恒源科技股份有限公司 | A kind of automatic electrolysis installation of rare earth metal |
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| CN106011942A (en) * | 2016-07-29 | 2016-10-12 | 四川华索自动化信息工程有限公司 | Signal-level-control-circuit-based automatic feeding control system for aluminum electrolysis |
| CN106011940A (en) * | 2016-07-29 | 2016-10-12 | 四川华索自动化信息工程有限公司 | High-precision automatic feeding control system for aluminum electrolysis |
| CN106086939A (en) * | 2016-07-29 | 2016-11-09 | 四川华索自动化信息工程有限公司 | A kind of aluminium oxide auto feed control system used for aluminium electrolysis |
| CN106149005A (en) * | 2016-07-29 | 2016-11-23 | 四川华索自动化信息工程有限公司 | A kind of auto feed control system used for aluminium electrolysis based on ICLC |
| CN106191928A (en) * | 2016-07-29 | 2016-12-07 | 四川华索自动化信息工程有限公司 | A kind of many processing of circuit type auto feed used for aluminium electrolysis control system |
| CN106222701A (en) * | 2016-07-29 | 2016-12-14 | 四川华索自动化信息工程有限公司 | A kind of based on the auto feed control system used for aluminium electrolysis comparing amplifying circuit |
| CN107227468A (en) * | 2017-07-31 | 2017-10-03 | 赣州市恒源科技股份有限公司 | A kind of automatic electrolysis installation of rare earth metal |
| CN107620092A (en) * | 2017-11-06 | 2018-01-23 | 河南科达东大国际工程有限公司 | A kind of aluminium electroloysis single-point discharging control method and system |
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