Fengcheng Ruixing Carbon Products Co., Ltd
High Purity Graphite generally refers to the carbon content of 99. 99% or more of the Graphite, the structure can be divided into coarse particles, fine particles and ultrafine particles of three types of structure, high purity graphite for a large number of straight pull single crystal silicon Furnace. (CZ) method, the other methods are magnetic field pull method (MCZ), region (FZ) method and double crucible crystal pulling (CZ) method. France, the global electronics industry with straight pull single crystal silicon accounted for about 80% of the total amount of single crystal silicon, straight pull monocrystalline silicon furnace graphite parts are consumables, the use of high-purity graphite materials processed into straight pull single crystal silicon furnace Heating system. 2005 China needs to pull silicon single crystal furnace with graphite about 800 t.
Another important use of high purity graphite is the processing of various types of crucibles for the production of precious metals, rare metals or high purity metals, non-metallic materials. Spectral analysis of Graphite Electrode is also a high-purity graphite, can be used for all elements other than carbon content of the spectral chemical analysis, spectral analysis with graphite electrode extrusion method. The content of impurities in the finished product should not be greater than 6 * 10 in the spectral analysis of the preparation of standard samples and chemical methods to capture impurities when the need for pure carbon powder or pure Graphite Powder, the two high-purity materials on the impurity requirements are Is in the 6 * 10; in some uses, the need for carbon content of 99.9995%, the total ash content of less than 5 * 10. High-purity graphite molding methods are extrusion molding, molding and isostatic pressing three. Table 9 shows the physical and chemical properties of high purity graphite products produced .Table 10 shows the physical and chemical properties of high purity graphite electrode products for spectral analysis .
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