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Graphitization process is the key process in the processing of graphite electrode production, Physico-chemical properties of the graphite electrode is largely determined by the temperature of graphitization process, the graphitization temperature shall be above 2500 ℃. Graphitization furnace used in the graphite electrode processing mainly use the direct method which include two types of the furnaces,one is Acheson graphitization furnace,and another one is LWG furnace. 1、Acheson graphitization furnace Its main characteristic is contained into the roasting products constitute furnace resistance together with the resistance of material, the graphitization temperature will be 2000~3000℃.It is still widely used in China now.This furnace is characterized by simple structure, Strong and durable, easy to maintenance which is mainly the graphitization of equipment in the…
Graphite electrodes are usually used for melting metal, such as aluminum melting and copper melting and so on. Graphite electrodes easier processing, and processing speed significantly faster than copper electrodes. For example, the use of milling machining graphite, its processing speed than other metal working 2 to 3 times faster and does not require additional manual processing, and copper electrodes require manpower grinding frustration. Similarly, if the high-speed machining centers graphite electrode, faster, more efficient manner, but also no dust problems. In these processes, select the right tools and graphite hardness can reduce the wear loss and damage of copper tools. If the time is relatively specific milling graphite electrode and copper electrode graphite electrodes, graphite 67% faster than the…
Graphite rod surface by potential cycling. No interference effect of the most common ions such as sodium, potassium, chloride, nitrate, iodide, calcium, zinc, aluminum, sulfate and sorbitol was observed during electrochemical determination of fluoride. The graphite felt was oxidized at a positive electrode potential in sulfuric acid solution. The electrochemical performance of the treated graphite felt served as electrode for vanadium redox battery was investigated with FT-IR, On the other hand, the PAPBA/GR electrode showed not only good sensitivity and selectivity, but also relatively rapid response to changes of analyte concentrations in the range of 20s. The PAPBA-modified graphite rod (PAPBA/GR) electrode prepared in this way was used for potentiometric fluoride determination. The linear calibration range was from 5x10(-4) to…
