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 The following points should be paid attention to when installing the electrode paste airtight paste: 1. Do not allow debris to enter the electrode 2. Proper paste height 3. Work harder 4. Appropriate temperature 5. Prevent overhang 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. 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. Ever

 Electrode occupies an important position in submerged arc furnace. The working conditions of the electrode are bad, the current passing through is high, the temperature difference between the two ends is large, and the production is affected by the impact of mechanical, electrical and charge collapse... Mechanical strength, higher electrical resistivity, better thermal shock resistance, oxidation resistance and smaller thermal expansion coefficient. Generally speaking, the quality of electrode paste is controlled by the following five indicators: 1. Ash: Ash is the residue of electrode paste when it is burnt to constant weight at 850℃-870℃. It belongs to inorganic minerals. It has high ash resistivity, poor strength, high power consumption, and large electrode consumption. In the event of a hard breaking accident, the ash content is a very important indicator, and the lower the better. 2. Volatile matter: Volatile matter refers to the mass loss of electrode paste under the condition o

Feeding, power distribution and material level management during the start-up process of the silicon-aluminum-iron alloy electrode paste electric arc furnace Feeding After the electrode paste electric furnace is completed, start to gradually add materials to the furnace. During the opening of the furnace, all activities, whether it is feeding, level management, or power distribution, must be carried out around raising the furnace temperature. For the first feeding, the three electrode columns must be buried, and the feeding amount is large. Therefore, the raw materials are mixed evenly, and the feeding should be evenly thrown around the click. Partial feeding is strictly prohibited. The material level management should be in place in time, and the material should be discharged in time according to the smelting situation. Since the furnace temperature is low when the furnace is turned on, it is most likely to cause three-phase disconnection, which will cause difficulties for the firs

Raw material for preparing electrode paste The raw material for making electrode paste is composed of solid carbon material and binding material. The quality of the electrode paste is closely related to the raw material formula and preparation process. Solid materials include calcined anthracite, metallurgical coke, petroleum coke and graphite electrode scraps. Anthracite is dense and has a high carbon content, which can improve the thermal stability, conductivity and mechanical strength of the electrode; the binder of the electrode paste includes pitch and coal tar, and tar is added to adjust the softening point. The binder is decomposed during the sintering process of the electrode paste and the volatiles are discharged and then converted into coke, so that the electrode forms a hard whole. The formula of electrode paste should consider various factors such as the ratio of various aggregates, particle size composition, softening point of the binder, and the amount of addition. Cl

 According to the quality requirements, raw materials and process conditions of the products, the cathode carbon blocks in China are basically divided into three categories: ordinary cathode carbon block, semi graphite carbon block and graphite carbon block. Anthracite calcined at 1250 ~ 1350 ℃ is the main raw material of common cathode carbon block. The semi graphite carbon block can be divided into two types according to different production processes. One is to use high-quality high-temperature electric calcined anthracite, or to use more graphite fragments or even all graphite fragments as aggregate. The formed green products are only roasted (the roasting temperature does not exceed 1200 ℃) and no longer enter the graphitization furnace for heat treatment. This kind of carbon block is called semi graphite carbon block. The other uses more easily graphitized coke as aggregate, raw products are roasted and then put into graphitization furnace for heat treatment at 180