2022-11-23
2023-04-19High -carbon graphite extraction method, flotation method is one of the most benefit of high -carbon graphite with low energy consumption and reagent loss and lowest cost of energy consumption and reagent loss in mineral purification. However, when the floating method is used, the graphite can only achieve unlimited progress. Regarding scales -shaped graphite, not only will it be unbuttoned to separate it, but it is not conducive to maintaining the large scales of graphite. To obtain high carbon -containing high carbon -based graphite, pure graphite is needed to use chemical method.(1) Pure method of high carbon alkaline acid. The carbon content after the purification of alkaliic acid method can reach more than 99 %. It has the characteristics of less one -time investment, high product grade, and strong process adaptability. It also has strong generality. The purity of non -metal mines can accept the benefits of alkaline acid method. The alkaline acid method is the most common essenti
2023-04-19In recent years, various types of low -density carbon graphite materials have been actively researched, including carbon (graphite) foam made of asphalt or polymer resin, as well as using high repetition pulse laser to abolish carbon materials The carbon nano foam formed. Granny Gygm is also a low -density carbon graphite material. Due to the simple preparation process and low production cost, it is convenient for large -scale industrialized production. In recent years, the research on expandable graphite has continued to deepen. The following editor of Jinhui Graphite Company introduced the method of soaking flexible graphite in the concentrated acid into a low -density puffed graphite block:The insect shape and weak macro structure of puffed graphite restrict their application. If it can be made into a stable -swollen graphite block, it will be conducive to puffed graphite to play its role as adsorption, heat insulation, heat conduction and other functional materials. The flame reta
2023-04-19Because graphite is a non -polar material, it is difficult to use the small polar organic or inorganic acid intercourse alone, so oxidant is usually used. The chemical oxidation method is generally soaked in the solution of the natural scales in the solution of the oxidant and plug -in agent. Under the action of a strong oxidant, graphite is oxidized, making the macromolecular molecule of the graphite layer into a plane macromolecular with a positive charge. Due to the extrusion effect of the iconic charging between the plane macromolecules with a positive charge, the spacing between the graphite layer increases, and the plug -in agent is inserted between the graphite layer and becomes a graphite. When heating at high temperature, puffed graphite will quickly shrink, and the contraction multiple is as high as tens to hundreds or even thousands of times. The apparent volume of shrinking graphite reaches 250-300 ml/gram or more. The contracted graphite is worm -like, with a size of 0.1
2023-04-191. The purity of the selection of raw materials for the selection of nuclear high pure graphite is the same as the prerequisite for production, and it is related to the ash component of the raw materials selected by the production. The civilian type can expand graphite products that are that regularity: raw materials are ash, and their products are also large. Therefore, the oil coke ash selected by the production nuclear high -pure graphite specifies the mouth. 15%of the following, although the boron component proposes the requirements, it will be analyzed, and the specific data information will be 0.5pp. the following. Results The total ash was divided into 5 PPMs, and the boron components were mouth. LPPM up and down, the section of the hot neutron absorption is 3.8, 94 mubes. 2. High temperature adjustment treatment and other halogen to solve the temperature of the temperature when the graphitization of the product, and whether it carried out another halogen solution, which is a f
2023-04-17Scales graphite is a kind of natural graphite. After the mines, it is pure. The general shape is fish -like, so it is called scale graphite. The expansion graphite is that the scales graphite is washed by sourness and after interlocketing, and it can be used as a previous graphite to expand 300 times. You can make rolls and flexible graphite raw materials. Let me introduce you in detail the scales graphite and expandable graphite. the difference:1. The use of scales graphite is more widely used than expandable graphiteIn industrial production, in addition to the function of expanding graphite, scales graphite is much better than expanding graphite. Therefore, the practice of industry is more widely used.2. The production process of scales graphite and expansion graphite is differentScales graphite is mainly made of mechanical damage and grinding. The expansion graphite is mainly made of processing methods such as chemical acidic liquid impregnation, and the production process is more
2023-04-141. Chemical intervening method: The prepared initial raw materials are high -carbon scales -shaped graphite. The remaining chemical reagents such as concentrated sulfuric acid (more than 98 %), hydrogen peroxide (more than 28 %), potassium permanganate, and other industrial -grade reagents are used The general steps for preparation are: Different proportion of hydrogen dioxide solutions, natural scales, and concentrated sulfuric acids with different proportion at the appropriate temperature with different adding procedures, react for a certain period of time under continuous stirring, and then wash it to neutrality and centrifugal separation. After dehydration, it is dry at 60 ° C vacuum.2. Electrochemical Law: Treatment of graphite powder in a strong acidic fluid to make expansion graphite, hydrolysis, cleaning and dryness. It mainly uses sulfuric acid or nitric acid as strong acid. Essence3. Ultrasonic oxidation method: During the process of preparation of swelling graphite, the ult
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