CGM Online

 The mechanical strength of electrode paste includes compressive strength, flexural strength and tensile strength 　　The electrode paste height refers to the height from the upper end of the electrode clamp to the top of the 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 barrel is damaged due to the pressure of the paste column is too high. If the electrode paste column is too low, it is difficult to obtain a dense electrode due to the pressure of the paste column is too small and the filling property is poor. The electrode paste is consumed too quickly. The proper height of electrode paste column can improve the quality of electrode baking and reduce consumption. 　　Electrode paste is the conductive electrode of various submerged arc furnaces and is an indispensable product in industrial production. In the national standard of electrode paste, there is no mechanical strength q

 (1) The measurement should be made twice in each shift, once during the shift, and once during the shift, and make a record. (2) The measuring position of each shift must be in the same position (inner triangle or outer triangle). (3) Each shift should decide how much electrode paste should be installed according to the height of the 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.

 Electrode accidents are common accidents in ferroalloys and calcium carbide enterprises smelted by submerged arc furnaces. The cause of electrode accidents is analyzed and judged accurately, and targeted preventive measures can be taken to reduce the occurrence of electrode accidents. However, due to the analysis of electrode accidents, it is supplied by electrode paste. The manufacturer and the electrode paste use the interference of multiple factors. To accurately determine the cause of the electrode accident requires objective evidence recognized by both parties, and the electrode section is a good objective evidence, so the analysis of the electrode section is of great significance. . 1. Electrode paste segregates, resulting in layering of aggregate and powder 1. Section status: There is obvious particle layer segregation on the section of the electrode. According to the size and cross-section of the radiant heat source for electrode baking, there are two situations, one is the ac

 This process mainly has several forms in terms of the layout of process equipment. A flat layout: all the crushing equipment, screening equipment, milling equipment, and storage bins are all on the same plane. It is basically manual operation, the environment is very poor, and the labor intensity is high. This arrangement method is mainly used by some small enterprises and manufacturers with small output. The process is simple and the investment is small. Not suitable for large-scale production requirements and environmental protection requirements. Belongs to extensive production methods. It is characterized by low investment, high labor intensity, high pollution, and low efficiency. In today's social environment where people-oriented, safety and environmental protection are first, small factories should also improve the method of eliminating this kind of medium-crushed ingredients. graphite electrode, cold ramming paste, semi coke, electrode paste, graphite carbon block, smelt m

 The reason for the soft fracture of the electrode paste is quite right. Generally speaking, there are mainly the following aspects: (1) The electrode paste contains too much volatile matter. (2) The iron plate of the electrode shell is too thin or too thick. Too thin will not be able to withstand large external forces and rupture, causing the electrode iron shell to fold or leak and softly break when pressed and put; too thick will cause the iron shell and the electrode core to not contact closely and cause the core to cross. It will also cause soft disconnection. (3) Poor production of the electrode iron shell or poor welding quality will cause cracking, which will lead to leakage or soft fracture. (4) When the electrode is lowered, the load of the electric furnace is not reduced or reduced too little. After the electrode is discharged, the load increases too fast, which will also cause the electrode to softly break (except for large furnaces). (5) The electrode is lowered too freque

 The new type of electrode paste is made of refined raw coal, desulfurizer, combustion-supporting agent and other materials. It is made through fine washing, desulfurization, and vacuum stirring mechanisms. It can be processed into rectangles, squares, oval shapes and other shapes according to user needs. Weight of lumpy product. The product has the following characteristics (compared with natural lump coal): 1. Uniform particle size and regular shape; 2. The void ratio is high, and the reaction activity is high; 3. The thermal efficiency is 20% higher than that of raw coal; 4. Reduce emissions of hazardous substances by 40%; 5. The broken rate is reduced by 30%; 6. Reduce the screening process. In the process of vigorously promoting new energy production, the new electrode paste will be a new type of environmentally friendly product that replaces raw coal, especially for smelting enterprises, 20%-30% of electrode paste can be added to reduce the amount of coke and greatly reduce smelt

 Silico-manganese alloy is a common compound deoxidizer, it is also a reducing agent. High-silicon-manganese-silicon alloy is used for external reduction dephosphorization. CaSi-CaF2-CaO is used as dephosphorization agent. Under the condition of extremely low oxygen potential, the combination of calcium in the dephosphorization agent and phosphorus in the alloy generates Ca3P2, which can make The phosphorus in the alloy is removed, and the alloying elements in the alloy are not lost. The raw materials used in smelting high silicon-manganese silicon alloys are: manganese-rich slag, silica, coke, charcoal, and lime. The basic principle of reductive dephosphorization is to rely on the combination of calcium in the dephosphorizing agent and phosphorus in the alloy to generate Ca3P2 under the condition of extremely low oxygen potential, so that the phosphorus in the alloy can be removed. Adopting process methods: inverted bag method, powder spraying method. Two hot metal ladle A and B are r

  3. Treatment after the electrode is softly broken. In normal production, it is found that the current suddenly rises rapidly or the current drops instantly after a sudden rise but does not rise again. At the same time, when the voltage of the electrode to the furnace bottom drops to "0", it is necessary to decisively cut off the power and evacuate the operators. Afterwards, organize personnel to open the furnace door to observe the situation. When it is found that the paste is leaking, the electrode should be pressed into the furnace in time to make the broken end connected and then compact the charge to reduce the outflow of electrode paste, and lower the electrode to connect with the broken end and remove it. At the same time, find out the leakage of the electrode paste and deal with it. After inspection and repair, confirm that there is no leakage. Adjust the electrode to manual control for low-load power transmission and baking. The electrode tip and the broken end are

 A large-scale production accident in the production of calcium carbide when the electrode is softly broken, but it can be avoided if preventive measures are in place. In production, when the electrode is softly broken, it will cause great danger and injury to equipment, production, and especially personal safety. 1. The phenomenon of electrode soft-breaking. When the leakage of paste in the production causes soft-breaking, the ammeter on the operation interface of the central control room suddenly rises or the current drops instantly after a sudden rise. The voltage of the electrode to the furnace bottom drops to "0". At the same time, the electrode tube on the fourth floor emits a large amount of black smoke or yellow smoke from the inside of the shield, and the temperature of the furnace gas outlet suddenly rises, and the pressure in the furnace increases suddenly. In severe cases, the electrode paste in the electrode tube will flow out, and the furnace gas will flow fro