Time：2023.10.16Browse：1
1. The purity of high-purity graphite in the selection of production raw materials is immediately related to the ash content of the selected raw materials under the same production conditions. Civil expandable graphite products have the following pattern: those with high ash content in raw materials also have high ash content in their products. Therefore, the ash content of petroleum coke selected for the production of nuclear high-purity graphite is specified in the mouth. Below 15%, although the boron composition is required, analysis will be conducted, and the specific data information is all in 0. 5pp. Below. The total ash content of the product was divided into 5 parts in ppm, with boron content in the parts. The thermal neutron absorption cross section of the LPPM is 3. Eight times three. 94 millibars.
2. The high temperature quenching and tempering treatment and other halogenation solutions have a fundamental impact on the removal of ash, as well as whether or not halogenation solutions are carried out separately during the graphitization of commodities. The various residual components generally start to evaporate after 1500 ℃ and are completed at 2500 ° C. In addition, carrying out halogenation solution has a more significant effect on removing residues. Taking a certain type of product as an example, thermal purification can only reduce ash content by about 7 mouthfuls, while organic chemical purification of halogen bulbs can reduce ash content by about 30 mouthfuls.
3. Strictly controlling the prerequisite for cleaning in each production process, and paying further attention to the prerequisite for cleaning, is a topic that should be frequently exaggerated in the production and rectification of nuclear high-purity graphite. Previously, it was necessary to avoid external residues from infiltrating into the production raw materials and paste, which has a certain effect on ensuring the purity of nuclear high-purity graphite. When products are graphitized and processed during cleaning production, water and oil should be prohibited, Sweat and other items contaminate goods.
4. The commonly used machinery and equipment for the production of expandable graphite powder: After the raw materials are pre crushed to the kneading process, the ash content generally increases, mainly manifested in the ash content of the raw materials after 9 sintering increasing by 5% or more compared to before 9 sintering, and the ash content of the kneaded paste increases by 7% or more compared to the 9 sintering raw materials. The reason for the increase in ash content is not only due to the poor storage of raw materials and the infiltration of dirt and dust after entering the factory, but also due to the metal powder and refractory soil damaged by the machinery and equipment used in production. Therefore, in the future, it is highly worthy of scientific research to consider whether the machinery and equipment for producing nuclear high-purity graphite can achieve no or minimal increase in the ash content of the product, such as using electromagnetic induction machines to remove metal powder from the crushed raw materials.
2023-03-20Expanded graphite was discovered at the beginning of the 1860s, and many countries like to use it for research, which can achieve many unexpected results. How many times can expansion be magnified? That's right. It's twice as big or even times! It is a new carbon material! Many people don't know much about expanded graphite!
With the gradual breakthrough of mass production and large -scale issues, the pace of industrialization of graphene is accelerating. Based on my country's existing technological research and development achievements, the first batch of commercial applications may be mobile electronic equipment, aerospace, and new energy battery fields.The bending screen has attracted much attention at the consumer electronics exhibition and has become the development trend of mobile device display in the future. The future market of flexible display is huge, and the future of graphene as a basic material is also full of hope.On the other hand, an important area for commercialization of new energy battery batteries. The college can successfully develop a flexible photovoltaic board with a surface formation of the Chinese graphene nano -layer, which can greatly increase the cost of reducing production of transparent transparent and deformable solar cells. It can be used for small system applications in2023-07-18Battery dedicated graphite application
Haifeiling owns domestic advanced technology, equipment and high-level R D team, and is committed to creating well-known brand trademarks of Haifeiling products
4008-168-001
