Time：2023.04.25Browse：1
The flotation method is a type of energy consumption and reagent consumption and low cost in the conventional purification method of minerals. This is the advantage of the floating method purification method. For scales -shaped graphite, multi -segment mills cannot be completely unbuttoned, but they are not conducive to protecting large scales of graphite. Therefore, the use of flotal methods to further improve the graphite taste. High carbon graphite containing more than 99%of carbon must use chemical methods to use graphite.
(1) Pure method of alkaline acid. The carbon content after the purity method of alkaline acid method can reach more than 99%, which has the characteristics of less one -time investment, high product quality, and strong process adaptability. The purity of metal mines can adopt the advantages of alkaline acid method). The alkaline acid method is a wide range of methods in my country today; its disadvantages are large energy consumption, long response time, large graphite loss, and serious pollution of wastewater.
(2) hydrogen fluoric acid method. The main advantage of the hydrofluoric acid method is that the high efficiency is high, the quality of the product is high, the performance of graphite products is small, and the energy consumption is low. The disadvantage is that the hydrogen acid is highly toxic and strong. Strict safety protection measures have also led to increased costs for strict requirements for equipment. In addition, the toxicity and corrosiveness of wastewater produced by the hydrofluoric acid method are very toxic and corrosive. Low advantages are greatly reduced.
(3) chloride and roasting method. The low roasting temperature and smaller chlorine gas consumption of chloride roasting method have greatly reduced the production cost of graphite. At the same time, the carbon content of graphite products is comparable to the treatment of hydrofluoric acid. The recovery rate of the roasting method is high, but because the chlorine gas is poisonous and has strong corrosiveness, it requires high requirements for equipment operation. It needs to be strictly sealed. The tail gas must be properly treated. Therefore, it is limited to its promotion and application to a certain extent.
2023-04-20Graphene already exists in nature, but it is difficult to peel off a single layer structure. Graphene is stacked layer by layer to form graphite, with a thickness of 1 millimeter containing approximately 3 million layers of graphene. A pencil lightly scratches on paper, leaving traces that may be several or even just one layer of graphene.
Graphite's process characteristics are mainly determined by its crystallization form. Crystal forms of graphite minerals have different industrial values and uses. Industry, according to the different crystals, divide natural graphite into three categories.1. Deep crystalline graphiteThe dense crystal graphite is also called block -like graphite. Such graphite crystals are obviously visible to the naked eye. The diameter of the particles is greater than 0.1 mm, which is concentrated in 0.1-1m/g than the surface area. This: Graphite is characterized by high quality. Generally, carbon content is 60-65%, and sometimes 80-98%, but its plasticity and slipperyability are not as good as scales.2. Scales graphiteGraphite crystals are scales; this is made of deterioration under high -intensity pressure, with large scales and fine scales. The characteristics of such graphite ore are not high, generally between 2 and 3%, or 10 to 25%. It is one of the best ore in nature. The floating, lubricabil2023-06-07Graphite mineral classification
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