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 The measures to prevent electrode soft break during the use of electrode paste can be divided into the following points: 1. Strictly control and master the length of the working end of the electrode, reasonably control the pressing time, so that the pressing speed is compatible with the sintering speed. When the material surface is processed every 24 hours, Observe the baking condition of the electrode so as to control the hardness and softness of the electrode (if it is found that the surface of the laid down electrode is gray white, dark but not red or slightly red, it indicates that the electrode is well roasted; if the surface of the laid down electrode is red, it indicates that the electrode has been burnt; if the surface is black, it indicates that the electrode is not baked enough. You can also use round steel to poke the electrode. If it is hard, it can bounce back to indicate that the electrode has been burnt; if it is elastic, it indicates that it is normal; if it is soft, i

 　　The main problem perplexing the electrode paste manufacturers is that the baking speed of the electrode paste is too slow, so some manufacturers adopt the method of reducing the use of asphalt. This method is effective to a certain extent, but the too low asphalt content causes poor fluidity of the electrode paste, and the electrode paste is not easy to be filled in the electrode barrel. The poor compactness after sintering is easy to cause hard fracture. 　　Another method is to reduce the softening point of the asphalt and improve the electrode sintering speed. However, the softening point of the asphalt can not be reduced without limitation, because the asphalt with too low softening point reduces the coking rate of the asphalt, The strength of the electrode should also be reduced, or the hard break phenomenon should occur. Therefore, in addition to properly mastering the above two methods, the production of electrode paste should also improve the sintering speed of the electrode t

 Anthracite is the main raw material of electrode paste. The performance of anthracite is related to the performance of electrode paste. Therefore, it is necessary to understand and discuss the performance of anthracite to ensure the quality of electrode paste. Anthracite coal in China is mainly distributed in Shanxi, Ningxia and Guizhou. Shanxi is the origin of anthracite, which is mainly produced in Yangquan and Jincheng. Anthracite is an indispensable raw material for carbon industry. It is mainly used in semi graphite cathode carbon block, electric furnace carbon block, blast furnace carbon block, carbon electrode and various pastes. Studying and discussing various properties of anthracite is very beneficial to improve the quality of carbon products.

 However, these control indicators have not controlled the occurrence of electrode accidents in the production practice of small and medium-sized calcium carbide furnaces in the past decades. 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 again. The national standard for energy consumption indicators of large closed calcium carbide furnaces is quite strict, so the electrode paste should have a relatively small resistance coefficient. The electrode paste is a conductive material used for ferroalloy furnaces, calcium carbide furnaces and other electric furnace equipment. It can withstand high temperature, and the thermal expansion coefficient of e

 Electrode paste is a conductive material for ferroalloy furnace, calcium carbide furnace and other electric furnace equipment. It can withstand high temperature and has a small coefficient of thermal expansion. It has a relatively small resistance coefficient, which can reduce the loss of electric energy. With small porosity, the heated electrode can be oxidized slowly. With high mechanical strength, the electrode will not break due to the influence of mechanical and electrical loads. The current is smelted by the electric arc generated by the electrode input into the furnace. The electrode plays a very important role in the whole electric furnace. Without it, the electric furnace cannot play a role. In order to make the electrode work normally under the temperature generated by the arc, it needs to have a high degree of oxidation resistance and conductivity, which is only possible for the electrode made of carbon material, because the carbon electrode can withstand the arc temperatur

 In the process of molding or extrusion, the carbon paste will produce complex shape and internal structure changes such as elastic strain, plastic deformation and viscous flow under the action of external pressure. Their changes reflect the quality changes of some aspects of the electrode paste respectively. Among them, the plasticity of electrode paste is closely related to the formula, as well as the properties of binder and kneading quality. We can know by measuring the "softening point".

 The production process of electrode paste is roughly as follows: Crushing of raw materials (petroleum coke, coal, etc.) - grinding - Screening - batching - kneading (adding dissolved medium temperature asphalt to dry materials, a mechanical mixing process under a certain temperature maintained by steam heating) - forming - finished products The impact on the environment in the production process mainly includes: the pollution of dust in the crushing grinding screening process to the atmosphere, the noise pollution generated by mechanical operation, the pollution of asphalt smoke generated in the mixing and molding process to the atmosphere, and the pollution of cooling water to surface water, etc. The electrode paste production process has a serious impact on the environment, so we should be cautious in making this kind of environmental assessment report, and the pollution prevention and control measures should be in place. Electrode paste is a conductive material for ferroalloy furna

 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 ele

 Anthracite is the main raw material of electrode paste. The performance of anthracite is related to the performance of electrode paste. Therefore, it is necessary to understand and discuss the performance of anthracite to ensure the quality of electrode paste. Anthracite coal in China is mainly distributed in Shanxi, Ningxia and Guizhou. Shanxi is the origin of anthracite, which is mainly produced in Yangquan and Jincheng. Anthracite is an indispensable raw material for carbon industry. It is mainly used in semi graphite cathode carbon block, electric furnace carbon block, blast furnace carbon block, carbon electrode and various pastes. Studying and discussing various properties of anthracite is very beneficial to improve the quality of carbon products. We have been engaged in carbon work for many years, and have been dealing with anthracite since the early 1980s. We have been to many places in Yangquan and Jincheng of Shanxi Province for many times to understand, investigate, sample

 Electrode paste is an excellent conductor material, mainly including the following points: Electrode paste is a conductive material for ferroalloy furnace, calcium carbide furnace and other electric furnace equipment. The electrode paste can withstand high temperature and has a small coefficient of thermal expansion. It has a relatively small resistance coefficient, which can reduce the loss of electric energy. With small porosity, the heated electrode can be oxidized slowly. With high mechanical strength, the electrode will not break due to the influence of mechanical and electrical loads.

 In the process of producing carbide, ferrosilicon, ferromanganese and other ferroalloys, the smelting temperature needs to be increased, which can meet the production requirements only by inputting a strong current into the furnace through special electrodes. In order to make the electrode work normally at high temperature in the electric arc furnace, the electrode itself needs to have good conductivity, oxidation resistance and thermal shock resistance. Only the electrode paste produced with carbon raw materials can meet the harsh smelting requirements under continuous arc high temperature above 3000 degrees. Therefore, electrode paste plays an important role in the above-mentioned thermoelectric furnaces, so it is called the "heart" of this kind of electric furnace. The electrode paste is a kind of "continuous self baking electrode" in terms of its use method and properties. In the process of use, the outer layer of the continuous self baking electrode is a cylin

 These control indicators have not controlled the occurrence of electrode paste accidents in the production practice of small and medium-sized calcium carbide furnaces in the past decades. 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 again. The national standard for energy consumption indicators of large closed calcium carbide furnaces is quite strict, so the electrode paste should have a relatively small resistance coefficient. The electrode paste is a conductive material used for ferroalloy furnaces, calcium carbide furnaces and other electric furnace equipment. It can withstand high temperature, and the thermal expansion coefficient of elec

 The electrode paste is consumed while roasting (sintering in the electrode barrel made of steel plate) in the submerged arc furnace, so it is also called continuous self baking electrode. The unique roasting and use mode of electrode paste puts forward very high requirements for its plasticity. If the plasticity is too poor, the electrode paste does not have enough fluidity in the process of heating and softening, and cannot fully fill the inside of the electrode barrel to form a dense whole. After roasting, there are many holes in the electrode, which is prone to "hard breaking" accidents; If the plasticity is too good, during the softening process of the electrode paste, the asphalt is easy to migrate under the pressure caused by its own weight and the escape of volatile matter, resulting in flowing paste and segregation, which is easy to lead to "soft fracture" accidents [1-2]. Plasticity is a very important index of electrode paste. At present, most factories j

 The electrode paste is consumed while roasting (sintering in the electrode barrel made of steel plate) in the submerged arc furnace, so it is also called continuous self baking electrode. The unique roasting and use mode of electrode paste puts forward very high requirements for its plasticity. If the plasticity is too poor, the electrode paste does not have enough fluidity in the process of heating and softening, and cannot fully fill the inside of the electrode barrel to form a dense whole. After roasting, there are many holes in the electrode, which is prone to "hard breaking" accidents; If the plasticity is too good, during the softening process of the electrode paste, the asphalt is easy to migrate under the pressure caused by its own weight and the escape of volatile matter, resulting in flowing paste and segregation, which is easy to lead to "soft fracture" accidents [1-2]. Plasticity is a very important index of electrode paste. At present, most factories j

 Electrode paste is a product with simple process and complex technology in carbon production. First, the electrode paste is the finished product after kneading and forming. Unlike other carbon and graphite products, when defects appear in the previous process, they can be made up by roasting, graphitization or even impregnation. Second, the electrode paste is directly to the user, After the user completes the use process, the process forms an electrode to play The functions of carbon products, however, the users of electrode paste are very different: the furnace type is different; Different production products; Different regions; Different environment; The season is different, and the technical level of operators is also different. The so-called: it is difficult for everyone to adjust. It is very difficult to make the electrode paste production enterprise adapt to such complex use conditions. Therefore, the production process of electrode paste seems to be relatively simple, but it ne

 The main components of electrode paste are solid carbon materials and binders. Solid carbon materials include electric calcined coal, petroleum coke, etc. the binder is generally asphalt

 The fully automatic electrode paste forming machine is combined with scientific and reasonable process formula. The electrode paste products produced have high mechanical strength, low porosity, high temperature resistance, small coefficient of thermal expansion, smooth and tidy appearance, and standard specifications and dimensions. Meeting the technical and performance requirements of the ferroalloy and calcium carbide industries for electrode paste products, such as low resistivity, small thermal expansion coefficient, small porosity, high mechanical strength, high oxidation resistance and conductivity, will guide the new quality standards of electrode paste products, bring about a great change in the electrode paste industry, and reverse the post Luoyang production process and production procedures of electrode paste production enterprises at one stroke, for high quality, large-scale Automatic electrode paste production provides a strong guarantee.

 Electrode hard break 1. Phenomenon 1. The current suddenly drops and then rises, but it will not rise to the original position. 2. The temperature of furnace gas rises suddenly. 3. The electric arc sound produced by the electric furnace is abnormal. 2、 Reason 1. Improper storage of electrode paste leads to high ash content and poor adhesion. 2. The electrode cooling rate is high during shutdown. 3. The electrode paste above the conductive contact element is overheated, and solids precipitate, resulting in electrical stratification. 4. As the electrode enters the charge part with a slight taper, when the electrode is lowered, the electrode, the hard shell and the charge produce a great mechanical force. 5. After a long power failure, the load increases. 3、 Treatment method 1. Power off immediately. 2. The broken end is small, that is, the broken electrode is below the material level, the length of the residual electrode can work, and the broken end can be pressed into the furnace to co

 The production formula of electrode paste should not be changed easily, and the formula should be changed for many times. Small calcium carbide furnace or ferroalloy furnace can all use metallurgical coke or asphalt coke plus a small amount of natural graphite electrode paste, but the consumption is larger. For large or medium calcium carbide furnaces and ferroalloy furnaces, anthracite and metallurgical coke should be used to prepare their electrode paste. Adding a small amount of natural graphite or graphitized metallurgical coke to the electrode paste formula is conducive to improving the conductivity and thermal conductivity of the electrode paste. However, the preparation of earthy graphite for small and medium-sized factories should be strictly controlled. It should be noted that too much asphalt will make the sintering speed of the electric paste unable to keep up with the consumption, which is easy to cause soft fracture. The electrode paste with too much binder has high poros

 Electrode paste is a conductive material for ferroalloy furnace, calcium carbide furnace and other electric furnace equipment. It can withstand high temperature and has a small coefficient of thermal expansion. It has a relatively small resistance coefficient, which can reduce the loss of electric energy. With small porosity, the heated electrode can be oxidized slowly. With high mechanical strength, the electrode will not break due to the influence of mechanical and electrical loads.