Purification of graphite products
The requirements of modern industry for graphite products are developing in two aspects: one is to require high crystal size of the crystal scale, and the other is to require ultrafine particles (such as less than 1 μm or 0.5 μm). China has established graphite purification and fine powder processing lines in graphite processing plants such as Nanshu, Beishu, Liumao and Xinghe. The purification method is mainly chemical purification. The most mature process for chemical purification of graphite is to use a caustic alkali and graphite to melt at 700 ° C, then wash to neutral, then add hydrochloric acid to treat and wash, so that the carbon content of graphite reaches 98% to 99%. Some manufacturers also use hydrofluoric acid to produce high-purity graphite. Slicing Machine,Food & Beverage Machinery Slicing Machine,Multiple model Slicing Machine Wenzhou suote pharmaceutical and chemical engineering CO.,LTD , https://www.wzsuotejixie.com