Factors affecting electrode consumption rate①The quality of the electrodeThe quality requirement of the electrode is to have good firing performance, no soft o

Factors affecting electrode consumption rate

①The quality of the electrode

The quality requirement of the electrode is to have good firing performance, no soft or hard breaking, and good thermal conductivity; the electrode after firing must have sufficient strength, excellent thermal shock resistance, electrical shock resistance, low porosity, and low resistivity , Good oxidation resistance. Such self-baking electrodes have low consumption in the same calcium carbide furnace.

②The raw materials and product quality used in the electric furnace

The smaller the particle size of the carbon material, the greater the resistance, the deeper the electrode is inserted into the charge, the higher the furnace temperature, the faster the reaction, the better the production effect, the slower the electrode oxidizes, the slower the electrode paste is consumed; the higher the carbon content of the carbon material, the more the charge The higher the ratio, the less the electrode charcoal participates in the reaction and the slower the electrode paste consumption; the higher the effective calcium oxide content of lime, the slower the electrode consumption. If there are more quicklime and overburned lime, the ratio is lower, the electrode charcoal participates in the reaction more , The electrode consumption is faster; the larger the lime particle size, the slower the electrode consumption: the higher the gas production of calcium carbide, the slower the electrode consumption.

③Adjustment of process factors such as current and voltage

Low voltage, high current operation, electrode paste consumption is slow; electrode power factor is small, electrode paste consumption is slow.

④ Electrode operation management level

When auxiliary lime is often added during operation, the consumption of electrode paste will accelerate: frequent hard and soft breakage of the electrode will increase the consumption of electrode paste; the height of the electrode paste will affect the consumption of electrode paste, and the height of the electrode paste will be too high. Low will cause the electrode sintering density to decrease, which will speed up the electrode paste consumption; frequent open arc drying will increase the electrode paste consumption; if the electrode paste is not managed properly, dust will fall on the electrode paste, resulting in an increase in ash content , It will also increase electrode consumption.

The longer the electrode, the slower the consumption, and the shorter the electrode, the faster the consumption. The longer the electrode, the better the graphitization degree of the electrode in the high temperature zone in the charge, the better the strength, and the slower the consumption; on the contrary, the shorter the electrode, the faster the consumption. Maintaining the length of the working end of the electrode will make the consumption of the electrode enter a good cycle. The short the working end of the electrode breaks this benign cycle. The faster the consumption, the more the electrode is pressed and released. The longer the time, the sintering section of the electrode will be made. When moving down, it is easy to cause the electrode to slide down, core pull, paste leakage, soft break, etc. Production practice experience has proved that the poorer the production effect, the lower the load, and the lower the output, the more electrode paste will be consumed; the better the production effect, the less electrode paste will be consumed. Therefore, strengthening the technical level of the calcium carbide operators and the management of the use of electrode paste is a fundamental measure to reduce electrode accidents and reduce electrode paste consumption, and it is also a basic skill that must be mastered in the work of calcium carbide operators.