2024-04-02

Sustainable development and utilization of graphite resources

With the wide application of graphite in various fields, the sustainable development and utilization of its resources has become the focus of attention. In order to realize the sustainable use of graphite resources, we need to pay attention to environmental protection and ecological balance in the mining process.At the same time, we should also actively develop new graphite extraction and processing technolo

2023-11-09

Graphite chlorination roasting method

The chlorination roasting method involves adding a certain amount of reducing agent to graphite powder, roasting it at a certain temperature and under a specific atmosphere, and then introducing chlorine gas for a chemical reaction to transform valuable metals in the material into chlorides and complexes with lower melting and boiling points in the gas phase or condensed phase, and escape them, thereby separating them from their remaining components and achieving the goal of purifying graphite.Impurities in graphite can be decomposed into simple oxides such as SiO2, Al2O3, Fe2O3, CaO, MgO, etc. under the action of reducing agents after being heated at high temperatures. These oxides have higher melting and boiling points, as shown in Table 1, while their chlorides or metal complexes formed with other trivalent metal chlorides (such as CaFeCl4, NaAlCl4, KMgCl3, etc.) have lower melting and boiling points, as shown in Table 2. The vaporization and escape of these chlorides improve the p

2023-08-16

The process flow of carbon material production

The basic process of carbon material production includes: pre-treatment (pre crushing, calcination, or drying) of carbon raw materials, crushing, grinding, and screening grading of carbon raw materials, proportioning of carbon raw materials, addition of molten dehydrated binder and kneading, forming of paste after kneading, and roasting of formed green billets. In order to improve the density and strength of products, high-pressure impregnation and secondary roasting cycle densification treatment are carried out on the roasted billets, The graphitization of roasted products involves mechanical processing of carbon and graphite products.Why are the quality indicators of high-power and ultra-high-power graphite electrodes superior to ordinary power graphite electrodes?The current density of graphite electrodes used in high-power and ultra-high-power electric furnaces significantly increases, resulting in the following problems: (1) due to resistance heat and hot airflow, the temperature

2023-08-28

The purpose of graphite machining

Various carbon graphite products, although they have a certain shape and size after forming, undergo expansion and contraction, deformation and bending, collision or corner dropping during the process of roasting, impregnation, and graphitization treatment from the pressed blank to the graphitized blank. The surface adheres to some fillers and insulation materials, resulting in roughness and unevenness. Their shape and size change to a certain extent, and they cannot achieve the shape of the product during use, Due to strict requirements for size and surface roughness, it cannot be used without mechanical processing. In addition, some products have complex structures and shapes that cannot be directly produced by forming methods, such as metal continuous casting and rolling graphite crystallizers, electric spark machining graphite molds, carbide sintering graphite boats, discs, and other special graphite products. Some products require interconnection when used, such as the connection

2023-06-13

Future Development Trends of Battery Materials

1、 Research on New Battery MaterialsCurrently, lithium-ion batteries are the most common type of battery in the market, but they have issues with energy density, safety, and cost. Therefore, the research on new battery materials has become a hot research field. For example, Solid-state battery materials, high-performance capacitor materials, metal air battery materials are all current research directions. These new battery materials are expected to solve the problems existing in existing battery materials and also bring new possibilities for future battery applications.2、 Sustainability of battery materialsIn the pursuit of new energy and green environmental protection, the sustainability of battery materials has become an important issue. How to reduce the production cost of battery materials and improve the recycling rate is currently a hot research topic. In addition, the lifespan of batteries is also an important factor affecting sustainability. Therefore, future research on batte

2023-08-08

Precautions during the storage process of carbon material raw materials

(1) The storage site for carbon raw materials must be a cement floor, and the mixing of external impurities should be minimized when storing raw materials.(2) During the storage of raw materials, it is strictly prohibited to mix dust, sediment, and other impurities. It is best to store low ash materials in storage, and urgently needed raw materials should be kept in stock. For spare raw materials, if there is no warehouse for storage, they can also be stored outdoors, but management must be strengthened and appropriate measures must be taken.(3) During the storage period, carbon raw materials should be prevented from mixing with each other, especially to prevent more ash raw materials from mixing with less ash raw materials. If the raw materials are mixed, they should be downgraded for use. For the same type of raw materials, if the quality inspection results differ significantly, they should be stacked separately.(4) To prevent rain and snow from soaking in raw materials, it is neces

2023-09-25

electronic effect

The load migration rate of graphene at room temperature is about 15000cm2/(v · s). This value exceeds 10 times the silicon material. More than twice. Under certain conditions such as low temperature, the load migration rate of graphene can even be as high as 250000cm2/(v · s). Unlike many materials, the electronic migration rate of graphene is less affected by temperature changes. At any temperature between 50 and 500K, the electronic migration rate of a single laye

2023-03-28

What is the application scope of industrial graphite powder

Is superfine graphite graphite?

What are the characteristics of high pure scales graphite

High -pure scales graphite has good high temperature resistance, conductivity, high -pure graphite thermal conductivity, lubrication and chemical stability. Graphite manufacturers are widely used in metallurgical, machinery, environmental protection, chemical, fire, electronics, medicine, military, military, aerospace and other fields. Its status in the national economy is becoming more and more important, and it is an indispensable and important non -metal raw material for modern industry and high -tech development. Trace impurities have a great impact on the performance of graphite products. The higher the carbon content of high pure scales, the better its performance as a functional material.In order to analyze the trace impurities in high pure scales, the sample is usually grayed or wet to digest to remove carbon, dissolved ash with acid, and then determined the impurities in the solution. The grayization method does not need to dissolve gray with ultra -pure acid, avoiding the ri