ZHENGSHAN TECHNOLOGY

The calculation method for the resistivity and maximum discharge of charged electrode paste during self baking electrode roasting involves multiple steps and considerations. The following is an overview of the calculation methods based on existing information:
1、 The calculation method of electrode paste resistivity
The resistivity of electrode paste is a property that represents the resistance of electrode paste to current flow after calcination. The calculation method is usually based on the definition of resistivity, which is numerically equal to the resistance value of a conductor with a length (L) of 1m and a cross-sectional area (S) of 1m ². In practical operation, the measurement can be carried out through the following steps:
Sample preparation:
Process the electrode paste sample into a certain geometric shape to ensure that S/L is a constant.
Dry the sample at a certain temperature (such as 105-110 ℃), then store it in a dryer and cool it to room temperature for testing.
Instrument preparation:
Use electrical resistivity automatic measuring equipment (such as GM-2 type) for measurement. These devices typically include a main unit, auxiliary units, two electrode copper sheets required for measuring rod-shaped materials, and potential detector voltage probes.
Measurement steps:
Turn on the power switches of the main and auxiliary machines to put the instrument into the testing state of the charcoal stick.
Place the sample between the positive and negative electrodes and clamp the sample to ensure accurate measurement.
Input the distance L value (in mm) between the two probes of the potential detector and the cross-sectional area S value of the sample.
Immediately touch the test sample, read and record the digital value ρ, which is the resistivity value of the test sample.
Data processing:
To ensure accuracy, multiple measurements are usually taken and the average value is taken.
2、 The calculation method for the maximum downward discharge of self baking electrodes
There is a certain functional relationship between the maximum amount of self baking electrode placement and the electrode paste resistivity. This relationship can be fitted by establishing mathematical models or experimental data. Here is an overview of one possible calculation method:
Establishing functional relationships:
Based on the principle that the electrode shell and the self baking electrodes inside the electrode shell are parallel circuits, a functional relationship is established between the electrode paste resistivity ρ of the self baking electrode and its maximum daily discharge amount H day.
Derivation calculation:
Take the derivative of this function relationship to calculate the daily maximum downward displacement H daily lim under the condition of ultimate resistivity ρ pole lim.
Experimental verification:
Measure the electrical resistivity of different electrode pastes in the laboratory, and calculate the corresponding maximum daily discharge H daily lim based on the above functional relationship.
Verify the accuracy and reliability of these calculation results through actual production data.
Optimization and adjustment:
Based on the experimental verification results and actual production situation, necessary optimization and adjustment of the function relationship are carried out to ensure that the maximum daily discharge of the self baking electrode, H daily lim, is more scientific and accurate.
It should be noted that the resistivity of electrode paste and the maximum discharge amount of self baked electrodes are influenced by various factors (such as the composition of electrode paste, calcination temperature, structure of electrode shell, etc.), so comprehensive consideration and adjustment need to be made according to specific situations in practical applications.
In addition, in order to ensure the production efficiency and safety of self baking electrodes, it is necessary to strengthen the management and maintenance of electrodes, including strict implementation of operating procedures, timed and quantitative discharge of electrodes, and maintaining the normal and stable operation parameters of the electric furnace.