2023-02-22

Many elements of the destruction of graphite molds

There are two methods for burning the graphite molds for the destruction of graphite molds: resistance wire heating method and high -frequency electromagnetic sensing heating method. We know that when the resistance wire heating method is burned, the outer mold temperature is low, and the blade and core mold temperature is higher. The temperature is unevenly decided to decide the part where the mold is destroyed.1. Surface air oxidation and cracks: Because there is no recovery atmosphere during the entire process of burn, the graphite and gas are directly contacted, and it is difficult to avoid the surface air oxidation at high temperature. The higher the temperature, the faster the air oxidation rate; The mold is slowly consumed, leaving only a part of carbon and gray, and stones can be found on the spot on the spot. After a period of time, the surface of the mold will cause porosity and charcoal.2. Fracture: The reason for this kind of destruction is that the gear board of the golde

2023-07-04

The future development trend of battery materials

With the continuous progress of science and technology, battery materials have received widespread attention and research in recent years. Battery material is a core component of the battery and has a vital impact on the performance and life of the battery. With the pursuit of green environmental protection and new energy, the future development trend of battery materials has also attracted much attention. This article will explore the future development trend of battery materials from the following four aspects.1. Research on new battery materialsAt present, lithium -ion batteries are the most common battery types in the market, but they have problems such as energy density, safety and cost. Therefore, the research of new battery materials has become a popular research field. For example, solid battery materials, high -performance capacitance materials, metal air battery materials, etc. are all current research directions. These new battery materials are expected to solve the problem

2023-02-08

Graphite flotation method

Floating is a commonly used and important mineral method. Graphite has good natural floating. Basically, all graphite can be purified by floating methods. In order to protect graphite scales, most of the graphite flotation uses multiple sections of processes. Graphite flotation collecting agents are generally used for kerosene, with a dosage of 100 to 200g/t. The foaming agent is generally used with pine or butad ether, and the amount is 50 to 250g/t.

The advantages and disadvantages of high -carbon graphite purification methods

Floating method is a type of energy consumption and reagent consumption in traditional mineral purification methods. This is the advantage of the floating method to purify graphite. However, the use of floating selection and purifying graphite can only achieve limited graphite taste. For scales graphite, multi -level grinding not only can not completely dissolve the monomer, but it is not conducive to protecting large huge graphite. Therefore It is not economical and unscientific. To obtain high carbon graphite with a carbon content of more than 99%, graphite must be purified by chemical methods.(1) Alkaline purification method. The carbon content purified by alkalinic acid method can reach more than 99%, which has the characteristics of less one -time investment, high product quality, and strong process adaptability. It also has the advantages of conventional equipment and strong versatility.(2) hydrogen fluoric acid method. The main advantage of the hydrofluoric acid method is that

2023-03-14

What kind of wonderful use of graphite powder?

Graphite powder is widely used. Resources are carbon products, and the melting points are very high. Graphn powder can withstand high temperatures above 3000 ° C. Therefore, graphite powder has excellent high temperature resistance, and graphite powder resistance high temperature resistance can be widely used in high temperature resistance fields. Graphite powder is widely used in high temperature resistance. Casting is carried out in high temperature environments. In order to prevent the casting from deforming and broken at high temperatures, it is necessary to add graphite powder to the casting. Casting graphite powder can withstand the high temperature generated during the forging process, make the surface of the casting clean, without sticky sand, and ensure the quality of the casting.Graphite powder has unique physical chemical properties with high temperature resistance, corrosion resistance, good toughness, good thermal conductivity, good conductivity, and high carbon content.

2023-08-25

Factors affecting the gasification reaction of carbon materials

(1) Degree of graphitization: As the degree of graphitization of carbon materials increases, their activity towards gases decreases. The higher the final heat treatment temperature of carbon materials, the higher the temperature at which they begin to oxidize, so graphite products have a higher starting oxidation temperature than carbon products.(2) Structural state: Carbon materials with loose and porous surfaces are prone to react with gases. For example, the surface dense pyrolytic graphite treated at 3200 ℃ begins to oxidize in air at a temperature of 850 ℃, while the porous and loose charcoal on the surface begins to burn at 360 ℃.(3) Catalytic effect of impurities: Carbon materials contain impurities that have a significant impact on their gasification reaction, with varying catalytic effects. For example, iron, cobalt, nickel, copper, manganese, etc. are catalysts for the oxidation of carbon materials, while impurities such as boron, titanium, and tungsten have inhibitory effec

2023-05-24

Cast iron graphite

The formation process of graphite in cast iron is called graphization process. The basic process formed by cast iron tissue is the formation of graphite in cast iron.The graphite type and size of the gray cast iron depends on the graphite branches and growth rate in the common crystal group. When the common crystal group stops growing, the graphite will stop. They are separated and not connected. Using scanning electron microscope to observe the complete graphite in the common crystal groupThe three -dimensional form indicates that they are connected to each other. Only on the gold phase grinding surface is isolated.The national standard has the following divisions of the graphics of cast iron graphite: type A fine sheet, B -shaped flower shape, C -shaped thick blockbuster, D -shaped dot, E has directional points, f spider -like or planetary. The longest (100 times, greater than 100mm is 100mm. It is called 100mm long). The shortest graphite is the shortest (100 times at 100 times, le

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

2024-04-23

Graphite, the Beauty of Black Gold

Graphite, known as "black gold", has a profound black and metallic luster that endows it with unique aesthetic value. In the hands of artists, graphite transforms into a magical tool that can showcase a unique style, whether it is delicate sketching or rough graffiti.In addition to the field of art, graphite has also demonstrated its beauty in the fields of technology and industry. Its high temperature and corrosion resistance properties enable graphite to remain stable in harsh environments such as high-temperature furnaces and chemical pipelines, silently safeguarding the safety and efficiency of industrial production.The beauty of graphite lies in its scarcity and preciousness. As a non renewable natural resource, the extraction and utilization of graphite require more caution and sustainability. We should cherish this gift from nature and let the beauty of graphite continue to shine in the long river of human civilization.

2023-03-21

How to maintain graphite processing into graphite stick products?

1. During the use of graphite stick products, the graphite stick products are turned once a week to extend the life of graphite stick products;2. Using an appropriate amount of combustion agent, additives will reduce the life of graphite sticks;3. Keep a proper distance between the graphite stick and the wall of the furnace, and the graphite stick products should be placed in the furnace positive;4. When removing the inside of the graphite rod product, the inside of the wall of the graphite and sticking should be tapped to prevent damage to damaging graphite rod products;5. Graphite products are strictly preventing humidity. They must be placed on a dry place or wooden stand during storage.