The purity of graphite powder in graphite electrode products is an important parameter of graphite powder and is something that both graphite powder and graphite powder purchasing users must understand. Graphite itself is a natural elemental crystalline mineral of carbon, and the fixed carbon content is the main indicator of the purity of graphite powder. Before leaving the factory or undergoing further processing, graphite powder must undergo various parameter tests, among which the purity test of graphite powder is an important one.
The purity measurement of graphite powder is to detect the proportion of the fixed carbon content in the graphite powder. Because graphite has good chemical stability at room temperature, it is not convenient to directly determine its carbon content. The carbon content is generally calculated by the high-temperature volatilization amount of the material to be tested. That is, the carbon content is calculated based on the numerical value of graphite being oxidized into carbon dioxide and volatilized at high temperatures. The calculation method for the purity of graphite powder is that fixed carbon (%)=100%- ash (%)- volatile matter (%).
Graphene daily chemical products
The specific method for testing the purity of graphite powder is as follows: Accurately weigh two 1-gram samples of graphite powder using an electronic analytical balance, and place them respectively in a double-lid porcelain crucible and a graphite boat of known weight. Dry them in a 105℃ drying oven until they reach the required weight, and record the weights G1 and G2 of the graphite powder respectively. Place a double-lid porcelain crucible containing graphite powder into a high-temperature furnace and keep it at a constant temperature of 950℃ for 7 minutes with a stopwatch. Then take it out and cool it to room temperature in a desiccator. Weigh the graphite powder as G3. Take a graphite boat containing graphite powder and keep it at a constant temperature of 950℃ for 90 minutes in the high-temperature furnace. Then take out the graphite powder and cool it to room temperature. At this point, the weight of the material is the weight of the ash G4. First, calculate the volatile matter of the graphite powder V (%)= (G1-G3)/ G1× 100%. Thus, the calculation formula for the purity of the graphite powder C(%)=[(G2-V- G4)/ G2]× 100% is obtained. The purity of graphite powder is a very important parameter, especially when testing the purity of high-purity graphite powder. Only when the purity of graphite powder meets the purity requirements of high-purity graphite powder can it be considered a qualified product. The mold graphite industry has gradually transformed from the traditional model to a more diversified direction with its development. It is no longer rare for enterprises to join forces and cross boundaries to survive and grow. In the future demand environment, consumption will also have a more personalized and professional pursuit of products.
Graphite electrode
Therefore, the graphite mold industry is actively transforming to follow the trend of The Times and improve and enrich the product content. The development of an enterprise definitely requires specialization. A certain distributor stated that, in the current situation, very few enterprises can do a very good job in cross-industry development. Such as tiles spanning graphite molds, graphite molds spanning tiles, cabinets spanning graphite molds, etc. In every field, there are indeed its own thresholds and particularities, which cannot be easily achieved by a single enterprise. The accumulation and improvement of talents, technologies and channels all require a process.
The 20th Kitchen and Bathroom Exhibition has kicked off. Industry insiders have focused more on the field of graphite molds when discussing the kitchen and bathroom exhibition. But indeed, the kitchen and the bathroom are inseparable. During the development of the exhibition over the past few years, especially with the full opening of Hall N, cabinet enterprises, kitchen appliance enterprises, ceiling enterprises and other manufacturers have all moved in, and various supporting enterprises have also entered one after another, making the functions and highlights of the exhibition more rich and complete, and the gains can be greater!
However, the mutual integration of industries seems inevitable. The reason why graphite molds, cabinets, kitchen appliances and ceilings can be displayed in one exhibition period is actually the demand of the market and customers. Of course, specialization and diversification themselves are topics that have been developing in a dialectical way. The Shanghai Kitchen and Bathroom Exhibition has now entered a new stage. Both the exhibition and enterprises are quietly making preparations for transformation. This trend is actually a microcosm of the transformation of “Made in China”. At this exhibition which opened on June 3, 2015, we might be able to see more traces of “Internet Plus”, more traces of “intelligence”, and more minimally invasive and innovative practices.
Post time: May-26-2025