2023-10-31

Purification method of high carbon graphite powder

High carbon graphite is a type of high carbon content carbon graphite powder with a carbon content of usually over 90%. There are many methods for purifying carbon graphite. The carbon graphite powder purification method can produce high-purity graphite powder with a carbon content greater than 99.9. Therefore, we have summarized various purification methods and techniques for high-purity graphite powder.The purification treatment methods for high carbon graphite powder are divided into two categories: chemical method purification and high-temperature purification. Chemical analysis purification problems include two types: alkaline acid method and alkaline acid method. Let's briefly introduce and study the purification methods of these three high-purity graphite powders:The process is now a feasible and mature method for contrast purification, and the purification method for high carbon graphite powder is basically the purification of technical personnel's acid: participating in graph

2023-07-05

Types and characteristics of battery materials

Lithium -ion battery materials are currently widely used battery materials. Using it can greatly improve the performance of the battery and extend the service life of the battery. Mainly positive materials, negative materials and electrolytes. Among them, the positive pole materials mainly include lithium cobaltate, lithium iron phosphate, and ternary materials, and the main materials of the negative electrode are graphite and silicon. Sodium ion battery materials are similar to lithium -ion battery materials, but because the ion radius of sodium ions is larger than lithium ion, sodium ion material can use cheap sodium resources instead of expensive lithium resources. At present, research is mainly concentrated in the positive pole materials. The use of sodium ion materials can be widely used in new energy fields such as solar energy and wind energy.Metal air battery material is a new type of battery material, mainly including zinc air batteries, aluminum air batteries, etc. Because m

2023-06-06

The characteristics of high performance of silica graphite

SiO2, C, and SIC's reaction freedom can see Table 1.The freedom of reaction between SIO2, C and SICThe reaction of carbon and silicon is shown in Figure 2 with changes in temperature.The reaction of carbon and silicon changes with the temperatureThe thermal treatment temperature of graphite matrix materials (reflects its graphite), thermal expansion coefficient, pore rate and pore diameter size and distribution have a great impact on the seepage process. In order to obtain a good performance of siliconized graphite, the thermal expansion coefficient of graphite matrix materials should be as close to SIC as much as possible. It is best to use the same -sex graphite. The open air pores should be 12%to 15%. The above methods can be carried out according to the needs. For example, first use the CVR method, and then use the CVD method to process it, so that the obtained siliconized graphite is not breathable and free of free silicon. Silicon goblin has the characteristics of carbon and sil

2023-07-31

Will the performance changes after expanding graphite multiple times?

Expansion graphite exposure will expand rapidly at high temperatures. It has a certain isolation effect and can be used to extinguish metal fires such as lithium, sodium, potassium, uranium, and cricket. It is a good fire extinguishing agent. In actual use, we found that the functional effect of expansion graphite has a lot to do with the number of expansion of expansion graphite. The following graphite manufacturer editor will explain the function of repeated expansion of expanded graphite:The number of expansion graphite determines the role of expanding graphite. The repeated expansion of graphite powder is fluffy powder, which presents a structure similar to a kneading paper ball on the micro structure, but the active point of the carbon layer edges will increase. When making expansion graphite fire extinguishers, the expansion graphite can be expanded repeatedly. When the expansion graphite expands more than three times, the expansion of the expansion graphite is now less than twi

2023-05-22

Artificial graphite characteristics

Crystal structureNatural graphite: Crystal development is relatively complete, the graphization of scales graphite is more than 98%, and the graphitization degree of natural micro -crystal graphite is usually below 93%.Artificial graphite: The degree of crystal development depends on raw materials and thermal treatment temperature. Generally speaking, the higher the thermal treatment temperature, the higher the graphite. The artificial graphite produced by industrial production is usually less than 90%.Organizational structureNatural scale graphite: It is a single crystal, which is simpler in the tissue structure. There are only shortcomings in crystalline learning (such as defects, wrong positions, errors, etc.). The grains of natural micro -crystal graphite are small, the clutter between the grains is arranged, and there is a hole after the removal of impurities, which shows the same sex in the macro.Artificial Graphite: It can be regarded as a variety of materials, including graphi

2023-03-14

What are the main expansion graphite equipment?

The difference between expansion graphite and expansion graphite is that expansion graphite is a process of expansion. It has a large volume, and the expansion graphite has no expansion. It has the characteristics of high temperature and rapid expansion. L.Swrite graphite natural graphiteA loose and porous worm -like substance obtained by insertion, water washing, drying, and high temperature puffed. It is one of the expansion graphite production equipment, mainly used for natural grinding processingProcessing link, H/L/MVertical grinding machineIt is a device specializing in graphite, which is very suitable for configuration as expanding graphite equipment.

2023-08-16

The Function and Conditions of Adhesive

Carbon graphite material is a powder structure material similar to refractory materials and concrete. Except for non-ferrous brushes and mechanical metal graphite products, which are formed as a whole with a certain strength by phase transformation of metal powder at sintering temperature, the powder particles of typical carbon graphite materials cannot spontaneously bond together even at high temperatures. In order for them to bond into a whole with a certain shape and strength, a certain amount of substance that can bond carbon powder particles or fibrous fine substances into a whole must be added, and this substance is called a binder.The conditions that the adhesive should meet:1) The adhesive should be able to mix with the main material to form a plastic substance.2) The binder becomes a viscous liquid within an appropriate temperature range. And it can have good adhesion and adsorption with the particles of the main material, and has a large adsorption force.3) The binder should

2023-05-15

How to extract high -carbon graphite

The high -carbon graphite extraction method and the flotation method is low in the purity of minerals and the loss of reagents. This is the advantage of purifying high -carbon graphite. However, the application of floating and purifying graphite can only make the graphics of graphite unlimited improvement. For sheet -shaped graphite, not only can not solve its complete monomer, but it is not conducive to maintaining large hungusgogi. High carbon graphite must be chemically purified for graphite.(1) Pure method of high carbon alkali acidic acid. The carbon content purified by alkaline is more than 99%of the carbon content, which has the characteristics of less one -time investment, high product grade, and strong process adaptability. It also has a strong generality. The purity of non-metal minerals can use the advantages of alkali-acid method, and the alkali-acid method is the most commonly used method in my country today.(2) High -carbon graphite chloride and roasting method. The chlo

2023-04-03

The shortcomings and prevention of graphite mold heat treatment process

The effect of battery dedicated graphite as negative electrode on lithium ion power battery fast charge performance

Since its inception, lithium -ion batteries have been widely used in multiple fields. At present, lithium -ion batteries are not only widely used in electronic products such as mobile phones, digital cameras, tablets, but also in the application of vehicle power supply. A certain breakthrough has been achieved; from the analysis of the future development of lithium -ion batteries: Fast charging lithium -ion batteries will become an important research direction for lithium -ion batteries.In order to improve the fast charging performance of the battery -specific graphite negative material, a series of graphite negative materials made of different coke materials were prepared through experiments. It also performed particle size, polarization, and XRD tests, which made a lithium -ion battery rate charging and rate charging. The cycle test and analyzed the test results.The effect of lithium ion power battery fast charging machine and the effect of battery -specific graphite on the battery