graphite electrode paste factory
Filling of graphite electrode paste
The graphite electrode paste should be crushed before filling, generally broken into small pieces of 80~, so that the graphite electrode paste pieces can pass between the two ribs smoothly. If the particle size is too large, the graphite electrode paste suspension failure is likely to occur; if the particle size is too small, it is easy to cause spraying. It is better to buy the finished material from the graphite electrode paste factory. If the material from the graphite electrode paste factory is of a qualified particle size, it can be filled directly. The powder of broken graphite electrode paste is reduced, the utilization rate of the graphite electrode paste factory is improved, and the cost of calcium carbide is reduced. Use a forklift to transport the graphite electrode paste to the calcium carbide furnace with a trolley or special tools, and use an electric hoist to hoist it into the electrode bucket. Pay attention to hoisting during loading. When installing the graphite electrode paste, be careful not to scatter the graphite electrode paste on the equipment outside the electrode barrel, so as to avoid electric fire accidents. Every time the graphite electrode paste is filled, the site must be cleaned, especially scattered on the The graphite electrode paste on the device is cleaned up. When installing graphite electrode paste, be careful not to touch the two-phase electrodes at the same time to prevent electric shock. Also pay attention to conductive objects and do not remove the two-phase electrodes at the same time to prevent power connection. In addition, domestic graphite electrode pastes are mostly square three-piece conjoined. Need to be broken in use.
At present, the graphite electrode paste factory has improved the shape and made it into an ellipsoid with a suitable particle size. For example, the sealed graphite electrode paste 72mm*65mm* produced by Fuzhen Carbon has a mass of about 500g. It has the following advantages:
(1) Convenient loading, unloading, storage and transportation;
(2) Finished products, loading and other processes are screened for many times to remove slag, and there is no weight loss;
(3) The dust pollution is less, safe and reliable;
(4) The granularity is moderate, so there will be no accidents of graphite electrode paste spraying.
1. How to determine the height of graphite electrode paste
The height of graphite electrode paste refers to the height from the upper end of the electrode clip to the top of the graphite electrode paste. If the graphite electrode paste is too high, the coarse and fine particles in the graphite electrode paste are prone to stratification, or the electrode cylinder will be swollen due to the excessive pressure of the paste column. If the graphite electrode paste column is too low, the pressure of the paste column is too small and the filling performance is poor. , It is difficult to obtain dense electrodes. The graphite electrode paste consumes too fast. The proper height of the graphite electrode paste column is beneficial to improve the quality of electrode firing and reduce consumption.
Press this to control the height of the graphite electrode paste, you can achieve good quality sintered electrodes, and each graphite electrode paste is controlled according to the actual situation. The electrode diameter of the calcium carbide furnace in the example is, and the height of the graphite electrode paste should be controlled within 3.5~4.0m.
2. Measuring method of graphite electrode paste height
When measuring the height of the graphite electrode paste factory, the tool used is a hemp rope. One end of the rope is tied with a ball made of molten graphite electrode paste. The rope is about 10m away, and every other mark is marked.
The principle of measuring the height of the graphite electrode paste factory is shown in the figure. The value takes the calcium carbide furnace as an example.
A is the distance (measured value) from the top of the electrode barrel to the base of the pressure release cylinder (the upper edge of the electrode barrel jacket), mm; b is the height of the electrode barrel empty barrel (measured value) mm; c is the height of the graphite electrode paste (calculated value) ) Generally c value is 3500~; d is the height of graphite electrode paste liquid, generally d value is 1000~; L is the working length of the electrode, from the low ring to the electrode tip is about 1800~ (L value of internal combustion furnace is about 1500~ ). The calculation formula of graphite electrode paste height (mm) is as follows: c=6000+600+a-b.
3. Requirements for height measurement of graphite electrode paste factory
(1) The measurement should be made twice in each shift, once in the shift, and once in the shift, and make a record.
(2) The measurement position of each shift must be in the same position (inner triangle or outer triangle).
(3) Each shift should decide how much graphite electrode paste to install according to the level of graphite electrode paste.
(4) The measuring personnel should be careful not to touch the two-phase electrodes at the same time to prevent electric shock.
(5) The measurement must be accurate.