Graphite ore processing methods are generally based on the type of graphite ore and the requirements of graphite products, and then we determine which method to us. The following professional production of graphite ore we shared is three kinds of graphite ore processing methods, just for your reference:
The processing of crystalline graphite mineral processing
Crystal graphite natural floatability is better; We use basically flotation method for processing in China. As the graphite flake size is one of the most important quality indicators, so in the sorting method using multi-stage grinding, multiple sorting processes in order to select the flake graphite as soon as possible. Flotation commonly used collector for the kerosene, diesel, etc., foaming agent for the second oil, fourth oil, adjusting agent for the lime, sodium carbonate, and inhibitor for the water glass.
Aphanitic graphite selection processing methods
Aphanitic graphite crystal is very small, it is also called microcrystalline graphite, graphite particles are often embedded in the clay, and the separation is very difficult. As the ore grade is high (usually 60% to 80% carbon), so many of the graphite ore owner crush the ore stone and sell graphite powder directly. Some ore owner use flotation method for microcrystalline graphite, but the cost is too high and stopped production. At present, some units are still conducting micro-crystal graphite flotation process (such as oil reunion flotation, etc.) research.
Purification of graphite products processing
Modern industrial requirements for the development of graphite products to two aspects: First, the requirements of crystal scale to achieve high purity, the second is to require ultra-fine particles of graphite products (such as less than 1μm or 0.5μm). China has established a graphite refining and fine powder processing production line in Nanxu, Beishu, Liumao, Xinghe and other graphite processing plants. The purification method is mainly chemical purification. Graphite chemical purification of the most mature process is the use of caustic and graphite melting at 700 ℃, after washing to neutral, plus hydrochloric acid treatment, washing, so that graphite carbon content reach 98% to 99%. Some manufacturers use hydrofluoric acid to produce high-purity graphite.
There are many graphite ore processing methods, we must choice a proper way for different graphite ore.
CFC CARBON CO., LTD is a carbon group company which is the worldwide leading manufacturer of graphite, graphite felt, carbon carbon composite and pyrolytic graphite.
CFC CARBON CO., LTD belongs to the graphite company of HTMA GROUP. The company is mainly engaged in developing international market of graphite, graphite felt and composite material. Currently, it has developt a production structure of graphite material, graphite felt and carbon composite.