Analysis of Delamination in the Sintering Process of Electrode Paste
The electrode diameter of the large-scale closed calcium carbide furnace to be developed at present is relatively large, the working length is relatively long, the tensile force generated by its own weight is greater, high mechanical strength is required, and new compressive strength control indicators need to be re-standardized; Now that energy saving has become a national policy, the country has very strict energy consumption indicators for large-scale enclosed calcium carbide furnaces. Therefore, the electrode paste should have a relatively small resistivity to reduce the loss of electrical energy. Therefore, the original control indicators of the electrode paste must be updated. Change.
The height of the electrode paste refers to the height from the upper end of the electrode clip to the top of the electrode paste. If the electrode paste is too high, the thick and fine particles in the electrode paste are prone to delamination, or the electrode cylinder will be swollen due to too much pressure of the paste column. If the electrode paste column is too low, the pressure of the paste column is too small and the filling is poor, and it is difficult to obtain Dense electrodes. The electrode paste is consumed too quickly. The proper height of the electrode paste column is beneficial to improve the quality of electrode firing and reduce consumption.
Before filling, the electrode paste should be broken, generally broken into small pieces of 80~100mm, so that the electrode paste block can pass between the two ribs smoothly. If the particle size is too large, the electrode paste suspension failure is likely to occur; if the particle size is too small, it is easy to cause the phenomenon of spraying. It is better to buy the electrode paste finished material. If the material supplied by the manufacturer is of a qualified particle size, it can be directly filled. The powder of the broken electrode paste is reduced, the utilization rate of the electrode paste is improved, and the cost of calcium carbide is reduced. Use a forklift truck or special tools to transport the electrode paste to the calcium carbide furnace, and use an electric hoist to hoist the electrode paste into the electrode bucket. Pay attention to the safety of hoisting during loading.
When installing electrode paste, be careful not to scatter the electrode paste on the equipment outside the electrode barrel, so as to avoid accidents of electric fire. Every time the electrode paste is filled, the site must be cleaned, especially if the equipment is scattered on the equipment. Clean up the electrode paste.