Stratification of coarse and fine particles in electrode paste
At present, the diameter of the electrode of the large closed calcium carbide furnace to be developed is relatively large, and the working length is relatively long. The tensile force generated by its own weight is larger, which requires high mechanical strength, and it also needs to re regulate the new compressive strength control index; Now energy conservation has become a national policy. The national standard for the energy consumption index of large closed calcium carbide furnace is quite strict, so the electrode paste should have a relatively small resistance coefficient to reduce the loss of electric energy. Therefore, the original control index of the electrode paste needs to be changed.
The height of electrode paste refers to the height from the upper end of electrode clip to the top of electrode paste. If the electrode paste is too high, the coarse and fine particles in the electrode paste are prone to delamination, or the electrode cylinder is swollen due to the pressure of the paste column. If the electrode paste column is too low, it is difficult to obtain a dense electrode because the pressure of the paste column is too small and the filling property is poor. Electrode paste consumption is too fast. The proper height of electrode paste column is conducive to improving the quality of electrode roasting and reducing consumption.
Before filling, the electrode paste should be broken into 80~100mm small pieces, so that the electrode paste can pass smoothly between the two ribs. If the particle size is too large, it is easy to cause electrode paste suspension failure; If the particle size is too small, it is easy to cause spray paste. It is better to buy the finished material of electrode paste. If the material supplied by the manufacturer is of qualified particle size, it can be directly filled.
The powder of broken electrode paste is reduced, the utilization rate of electrode paste is improved, and the cost of calcium carbide is reduced. Use a forklift to transport the trolley or special tools to the calcium carbide furnace, and use an electric hoist to hoist it into the electrode barrel. Pay attention to hoisting during loading *. When adding electrode paste, pay attention not to scatter the electrode paste on the equipment outside the electrode barrel, so as to avoid electric fire accidents. Each time the electrode paste is filled, the site should be cleaned, especially the electrode paste scattered on the equipment.