CN109100598B - Method for judging single-cell running state of assembly line type magnesium electrolytic cell - Google Patents
Method for judging single-cell running state of assembly line type magnesium electrolytic cell Download PDFInfo
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- CN109100598B CN109100598B CN201811238119.7A CN201811238119A CN109100598B CN 109100598 B CN109100598 B CN 109100598B CN 201811238119 A CN201811238119 A CN 201811238119A CN 109100598 B CN109100598 B CN 109100598B
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Abstract
The invention discloses a method for judging the single-cell running state of a production line type magnesium electrolytic cell, belonging to the technical field of non-ferrous metal smelting production processes. The method for judging the single-cell running state of the assembly line type magnesium electrolytic cell is convenient to operate and stable in evaluation result. The determination method comprises the following steps of a) measuring the working current of each electrode in each single groove; b) b, calculating the deviation mean value of the working current of each electrode according to the working current measured in the step a, classifying according to the deviation mean value and counting the number of each type of electrodes; c) assigning values to the electrodes of different classes, and then scoring the operation state of the electrolytic cell on the basis of the assignment corresponding to each electrode; d) and judging the running state of each single groove on the basis of the grading result.
Description
Technical Field
The invention relates to a determination method, in particular to a determination method for the single-cell running state of a flow line type magnesium electrolytic cell, belonging to the technical field of non-ferrous metal smelting production processes.
Background
Magnesium electrolysis is a core link of a process for producing titanium sponge by a magnesium thermal method, and the quality of indexes directly influences the production cost of the titanium sponge. The magnesium electrolysis technology in China basically covers various magnesium electrolysis cell type technologies in the world, including a diaphragm-free electrolytic cell, a production line electrolytic cell and a multi-pole cell. The multi-pole cell quickly gets a larger market in China due to good economic indexes, the electrolysis cell without the partition plate has high comprehensive indexes and labor intensity, but the requirements on the quality of raw materials are relatively low, and a small part of the multi-pole cell still has a market. A plurality of non-clapboard electrolytic tanks and electrolyte component adjusting tanks are connected with a magnesium-electrolyte separation tank to form a production line electrolytic tank, so that the magnesium-electrolyte separation is realized in a centralized manner, and the labor intensity is greatly improved. In addition, as the electrolyte refining and component adjusting functions are added, the direct current power consumption, the chlorine concentration, the raw material consumption, the environmental protection degree and other indexes are obviously improved compared with those of a non-separator electrolytic cell, and the direct current power consumption, the chlorine concentration, the raw material consumption, the environmental protection degree and other indexes are basically up to the level of a multi-pole cell, so that the electrolyte has competitiveness and attraction in a magnesium electrolysis process.
The assembly line type magnesium electrolytic cell connects the electrolyte component adjusting tank, the anode upper-inserting type refining tank, the anode lower-inserting type assembly line tank and the magnesium-electrolyte separation tank through the chute, thereby realizing centralized feeding and magnesium discharging. Because different circulation types correspond to different working electrolytic cell quantities, and the starting process is started in a small-circulation-medium-large-circulation-large-medium-circulation mode, the operation conditions of the electrolytic cells are uneven, and in addition, the operation state of the electrolytic cells is difficult to judge due to the influence of the operation process of the electrolytic cells, a reasonable maintenance plan of the electrolytic cells cannot be made, and the stable operation of the circulation and the power consumption per ton of magnesium are influenced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method for judging the single-cell running state of the assembly line type magnesium electrolytic cell is convenient to operate and stable in evaluation result.
The technical scheme adopted for solving the technical problems is as follows: a method for judging the single-cell running state of a flow line type magnesium electrolytic cell comprises the following steps,
a) measuring the working current of each electrode in each single groove;
b) b, calculating the deviation mean value of the working current of each electrode according to the working current measured in the step a, classifying according to the deviation mean value and counting the number of each type of electrodes;
c) assigning values to the electrodes of different classes, and then scoring the operation state of the electrolytic cell on the basis of the assignment corresponding to each electrode;
d) and judging the running state of each single groove on the basis of the grading result.
Further, in step a, a multimeter is used to measure the electrode operating current.
In the above scheme, in the step b, when calculating the deviation average value of the working current of each electrode, a current average value needs to be calculated first, and the current average value is a ratio of the measured total current to the measured total number of electrodes.
Further, in the step b, the classification of the electrodes is performed according to the following deviation average value,
electrodes deviating less than 15% of the mean value are classified as one type, electrodes deviating from 15% to 30% of the mean value are classified as one type, electrodes deviating from 30% to 45% of the mean value are classified as one type, electrodes deviating from 45% to 60% of the mean value are classified as one type, and electrodes deviating from 60% or more of the mean value are classified as one type.
In the above aspect, in step c, the assignment of the electrodes is preferably performed as defined below,
the working coefficient of the electrode within 15% of the mean value is 0.8; the working coefficient of the electrode which deviates 15 to 30 percent of the mean value is 0.7; the working coefficient of the electrode which deviates 30-45% from the average value is 0.3; the working coefficient of the electrode which deviates 30-45% from the average value is 0.2; the working coefficient of the electrode deviating from the mean value by 45-60% is 0.1; the electrode work factor deviating 60% from the mean value was 0.
Further, the scoring of the operating state of the electrolytic cell is carried out in the following steps,
the number of the electrodes of each type is multiplied by the corresponding working coefficient to be summed, and then the sum is divided by the total number of the electrodes of the single groove to obtain the scoring value of the single groove to finish scoring work.
In a preferred embodiment of the above aspect, when the operation state of each single cell is determined based on the score result, the operation state of the electrolytic cell having a high score is good, and the operation state of the electrolytic cell having a low score is poor.
The invention has the beneficial effects that: by adopting the judging method provided by the application, the technical problem that the operation condition of the electrolytic cell in the operation process cannot be judged in the prior art is solved, and the judging method provided by the application is used for measuring the current value of each electrode of a single electrode respectively before judgment, then simply calculating, counting and classifying the current values, and finally judging according to the number of the classes, so that the operation is simple and convenient, and the judgment result is accurate and stable. The maintenance plan made according to the judgment result is reasonable and simple, the implementation effect is good, and the long-term and stable operation of the equipment can be ensured.
Drawings
FIG. 1 is a schematic view of a flow line type magnesium electrolytic cell according to the present invention.
Labeled as: an electrolyte component adjusting tank 1, an anode upward-inserting refining tank 2, an anode downward-inserting production line tank 3, a melt channel 4 and a magnesium-electrolyte separation tank 5.
Detailed Description
For the convenience of understanding, as shown in fig. 1, the flow line type magnesium electrolytic cell related to the present application is briefly described, and as described in the background art, the flow line type magnesium electrolytic cell of the present application is formed by connecting an electrolyte component adjusting tank 1, an anode upward-inserting type refining tank 2, an anode downward-inserting type flow line tank 3, a melt channel 4 and a magnesium-electrolyte separation tank 5 by a chute, so as to realize centralized charging and magnesium discharging. The operation condition of the electrode of the anode downward-inserting type pipeline groove 3 directly influences the operation condition of the whole pipeline type magnesium electrolytic cell, namely the single cell to be evaluated in the application.
In order to solve the technical problem that the operation condition of a single cell of a flow line type magnesium electrolytic cell cannot be judged in the prior art, the invention provides the judgment method for the operation state of the single cell of the flow line type magnesium electrolytic cell, which is convenient to operate and stable in evaluation result. The determination method comprises the following steps of,
a) measuring the working current of each electrode in each single groove;
b) b, calculating the deviation mean value of the working current of each electrode according to the working current measured in the step a, classifying according to the deviation mean value and counting the number of each type of electrodes;
c) assigning values to the electrodes of different classes, and then scoring the operation state of the electrolytic cell on the basis of the assignment corresponding to each electrode;
d) and judging the running state of each single groove on the basis of the grading result.
By adopting the judging method provided by the application, the technical problem that the operation condition of the electrolytic cell in the operation process cannot be judged in the prior art is solved, and the judging method provided by the application is used for measuring the current value of each electrode of a single electrode respectively before judgment, then simply calculating, counting and classifying the current values, and finally judging according to the number of the classes, so that the operation is simple and convenient, and the judgment result is accurate and stable. The maintenance plan made according to the judgment result is reasonable and simple, the implementation effect is good, and the long-term and stable operation of the equipment can be ensured.
In the above embodiment, in order to ensure that the determination method provided by the present application uses a universal device as much as possible, and avoids the use of a dedicated device, even an original device, in step a, a multimeter is used to measure the electrode operating current. Correspondingly, the accuracy of judgment is improved to the maximum extent, the judgment result is closer to actual production, normal operation of equipment can be guaranteed, waste of spare parts and spare parts caused by overlarge judgment randomness of the electrodes can be avoided, specific parameters of each step are provided, namely in the step b, when the deviation mean value of the working current of each electrode is calculated, the current mean value needs to be calculated firstly, and the current mean value is the ratio of the measured total current to the measured total number of the electrodes. In the step b, the electrodes are classified according to the deviation mean value, wherein the electrodes deviate from the mean value by less than 15 percent, the electrodes deviate from the mean value by 15-30 percent, the electrodes deviate from the mean value by 30-45 percent and the electrodes deviate from the mean value by 45-60 percent; electrodes deviating more than 60% from the mean value.
In step c, the electrode is assigned according to the following rules, and the work factor of the electrode within 15% of the mean value is 0.8; the working coefficient of the electrode which deviates 15 to 30 percent of the mean value is 0.7; the working coefficient of the electrode which deviates 30-45% from the average value is 0.3; the working coefficient of the electrode which deviates 30-45% from the average value is 0.2; the working coefficient of the electrode deviating from the mean value by 45-60% is 0.1; the electrode work factor deviating 60% from the mean value was 0.
The scoring in the operation state of the electrolytic cell is carried out according to the following steps that the number of the electrodes of each type is multiplied by the corresponding working coefficient to sum, and then the sum is divided by the total number of the electrodes of a single cell to obtain the scoring value of the single cell to complete the scoring work. When the operation state of each single cell is judged on the basis of the scoring result, the operation state of the electrolytic cell with high score is good, and the operation state of the electrolytic cell with low score is poor.
In summary, the determination method provided by the present application does not have the following advantages,
the stability of the circulation is obviously improved after the implementation, and the power consumption per ton of magnesium is obviously reduced. The method has good implementation effect, can judge the operation state of the electrolytic cell only through simple measurement and calculation, and has strong application and popularization prospects.
Example one
A certain titanium sponge factory adopts the assembly line magnesium electrolysis technology, and the patent judges the single-bath running state of 3 electrolytic baths, and the specific implementation mode is as follows: (1) electrode currents of all electrodes of 3 electrolytic cells are respectively measured and calculated by using a universal meter, and are shown in a table 1; (2) classifying the measured electrode current and counting the number of electrodes of each type, wherein the classification result and the number of each type are shown in a table 2; (3) scoring the running state of the electrolytic cell, summing the number of the electrodes of each type multiplied by the corresponding working coefficient, and dividing the sum by the total number of the electrodes of a single cell to obtain a result shown in a table 2; (4) the evaluation result is used for judging the running state of the single electrolytic cell, and the running state of the 4# electrolytic cell is obviously lower than that of the other two electrolytic cells, so that the 4# electrolytic cell is overhauled. And restarting the 4# electrolytic cell in overhaul, wherein the power consumption of each ton of magnesium is 16112kWh before overhaul, the power consumption of each ton of magnesium is 15078kWh after overhaul, the power consumption of each ton of magnesium is obviously reduced, and the stable operation of circulation is ensured after the electrolytic cell is overhauled.
TABLE 1 electrolytic cell electrode Current measurement
TABLE 2 number of electrodes of each type of electrolytic cell
Claims (4)
1. A method for judging the single-cell operation state of a flow line type magnesium electrolytic cell is characterized in that: the determination method comprises the following steps of,
a) measuring the working current of each electrode in each single groove;
b) b, calculating the deviation mean value of the working current of each electrode according to the working current measured in the step a, classifying according to the deviation mean value and counting the number of each type of electrodes;
c) assigning values to the electrodes of different classes, and then scoring the operation state of the electrolytic cell on the basis of the assignment corresponding to each electrode;
d) judging the running state of each single groove based on the grading result,
in step b, when calculating the deviation average value of the working current of each electrode, calculating a current average value which is the ratio of the measured total current to the measured total number of electrodes,
in step b, the electrodes are classified according to the following deviation from the mean value,
electrodes deviating less than 15% of the mean value are classified as one type, electrodes deviating from 15-30% of the mean value are classified as one type, electrodes deviating from 30-45% of the mean value are classified as one type, electrodes deviating from 45-60% of the mean value are classified as one type, electrodes deviating from 60% of the mean value are classified as one type,
in step c, the electrodes are assigned values according to the following rules,
the working coefficient of the electrode within 15% of the mean value is 0.8; the working coefficient of the electrode which deviates 15 to 30 percent of the mean value is 0.7; the working coefficient of the electrode which deviates 30-45% from the average value is 0.3; the working coefficient of the electrode deviating from the mean value by 45-60% is 0.1; the electrode work factor deviating 60% from the mean value was 0.
2. The method according to claim 1, wherein the method comprises the steps of: in step a, a multimeter was used to measure the electrode operating current.
3. The method for determining the operating state of a single cell of a pipelined magnesium electrolytic cell according to claim 1 or 2, characterized in that: the evaluation of the operating state of the cell is carried out as follows,
the number of the electrodes of each type is multiplied by the corresponding working coefficient to be summed, and then the sum is divided by the total number of the electrodes of the single groove to obtain the scoring value of the single groove to finish scoring work.
4. The method according to claim 3, wherein the method comprises the steps of: when the operation state of each single cell is judged on the basis of the scoring result, the operation state of the electrolytic cell with high score is good, and the operation state of the electrolytic cell with low score is poor.
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