ニードルコークとは何か、そしてなぜ重要なのか？
Needle coke is a high-performance carbon material with a metallic luster and silver-gray color. Its surface texture is fibrous or needle-like, with a slippery feel. It contains small, oval-shaped pores inside. Needle coke consists of large molecular polycyclic aromatic hydrocarbons with flat aromatic layers. It has a graphite-like microcrystalline structure with high unit orientation. The microscopic structure follows the Franklin model and is a typical graphitizable carbon. It is an ideal material for preparing porous carbon. When heated above 2000°C, it forms graphite-like layered structures. Due to its excellent electrical conductivity, thermal conductivity, low thermal expansion, and thermal shock resistance, needle coke is widely used in steelmaking graphite electrodes, aerospace, […]
NdFeB粉末処理の最適化：酸化防止と効率向上における窒素/アルゴン保護ジェットミルの重要な役割
The application of nitrogen/argon-protected jet mills in the ultrafine grinding of neodymium iron boron (NdFeB) materials. NdFeB magnets are known for their high magnetic energy and strength. They are crucial in many industries, including electronics and renewable energy. Processing them into ultrafine powders is tough. This is because they are highly reactive, pyrophoric, and prone to oxidation. Traditional grinding methods often can’t meet the high purity and uniformity needed for advanced uses. This includes additive manufacturing and high-performance magnets. Jet milling, particularly under inert gas environments (nitrogen or argon), has emerged as a superior solution. This article looks at the technical principles and benefits of inert gas-protected jet mills in […]
ジェットミルかエアクラシファイアミルか：最適な選択をするために
Choosing between a jet mill and an air classifier mill depends on your needs. Jet mills excel at making ultra-fine powders with precise particle size control. They are ideal for low-contamination industries. They use high-speed gas jets to grind particles. They are suitable for dry, hard materials. In contrast, air classifier mills are versatile. They have a high throughput, processing various materials efficiently. They grind and classify. This makes them valuable in pharmaceuticals and food processing. Knowing the differences between jet mills and air classifier mills helps you choose the best one for your needs. Key Takeaways Understanding Jet Mills Operating Principles How Jet Mills Work Jet mills use high-speed […]
ジェットミリングにおける分類プロセスはどのように機能するのか
A jet milling’s classification process is vital for reducing and separating particle sizes. This is crucial in industries like pharmaceuticals, food processing, and materials science. This process uses high-velocity air jets for fine grinding. It also classifies particles by size and density. Knowing how this process works can improve efficiency, product quality, and energy use. Jet milling utilizes compressed air or gas to create high-velocity collisions between particles. This method reduces particle size without using mechanical grinding media, which can contaminate. Instead, the gas’s energy is used to fracture the particles into smaller sizes. Key Components of Jet Mills Milling Chamber: The jet mill’s core. High-speed gas jets hit particles […]
粒子サイズ？メッシュサイズ？メッシュとミクロンの変換方法は？
In general, mesh number × aperture (micrometers) ≈ 15000. For example, a 100-mesh screen has a 150-micron aperture. A 200-mesh screen has a 75-micron aperture. A 300-mesh screen has a 48-micron aperture. A 500-mesh screen has a 30-micron aperture. Below is a conversion between common mesh numbers and particle sizes. Mesh Micron (μm) Mesh Micron (μm) Mesh Micron (μm) Mesh Micron (μm) 2 8000 28 600 100 150 250 58 3 6700 30 550 115 125 270 53 4 4750 32 500 120 120 300 48 5 4000 35 425 125 115 325 45 6 3350 40 380 130 113 400 38 7 2800 42 355 140 109 500 25 […]
ジェット式粉砕機は、粉砕工程においてどのように高純度を確保するのか？
In the world of particle size reduction, keeping the product pure is key. This is especially true in industries where the final product’s quality matters a lot. The jet pulverizer, a cutting-edge air-based grinding tech, is crucial for keeping the grinding process pure. It uses compressed air to efficiently cut down particle sizes while keeping the material intact. This makes it perfect for applications that need top-notch purity. The jet pulverizer’s secret to keeping the product pure lies in how it works. Unlike old-school grinding methods that can bring in contaminants, the jet pulverizer uses air to keep things clean. It uses high-velocity air to break down particles. This makes […]
球状黒鉛が陽極材料として使用される理由は？
The negative electrode material is one of the core materials of lithium-ion battery, it determines the rate performance of lithium-ion battery, it also affects the efficiency of initial charge and discharge and stability of battery cycle. Natural graphite negative electrode material is made from natural flake graphite. Through process of grinding, spheroidization, grading, purification and surface modification, natural graphite anode material is obtained. It has advantages of low price, large storage capacity, non-toxicity and good conductivity. Spherical graphite has become a popular replacement for lithium-ion battery anodes. It has good conductivity, high crystallinity, low cost, and a long cycle life. It also has a low and flat charge and discharge potential. We have developed a new negative electrode […]
パルス式集塵機には、どのくらいのサイズのエアコンプレッサーが使用されますか？
How large of an air compressor should a pulse dust collector use? When choosing an air compressor for a pulse bag dust collector, you should pay attention to the following three aspects: The compressor and supporting equipment should be selected according to the gas requirements of the system.Consider the following:a.To reduce the oil content in the compressed gas, use an oil removal purifier. If high treatment standards are required, multi-stage treatment can be used.b. To reduce the water content in the compressed gas, use water removal equipment. Choose the compressor structure (vertical, horizontal, or angled) based on the dust collector’s tasks and the factory’s layout. How to calculate the exhaust […]
バッグフィルターのろ過速度の選択原理
Selecting the filter speed of bag dust collector is key. It should be based on the type of smoke or dust. It should consider where it will be used. It should also consider dust size, thickness, and gas temperature. Also, it should consider moisture, dust levels, and filter materials. Select a low value when the dust particles are fine. Also, when the temperature and humidity are high. And when the concentration and viscosity are high. For example, ≤1m/min; otherwise, a high value can be selected, generally not exceeding 1.5m/min. For large dust particles, pick 1.5~2m/min. They’re at normal temperature, dry, and not sticky. They’re at extremely low concentration. When selecting […]