2023-08-15

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 of the electrodes increases, resulting in an increase in the thermal expansion of the electrodes and joints, and an increase in the oxidation consumption of the electrodes; (2) The temperature difference between the center of the electrode and the outer circle of the electrode increases, and the thermal stress caused by the temperature difference also increases accordingly. The electrode is prone to cracking and surface peeling; (3) After the power of the electric furnace is increased, the electromagnetic force increases, causing severe vibration and increasing the probability of electrode breakage.Therefore, the physical and chemical properties of high-power and ultra-high-power graphite electrodes must be superior to ordinary power graphite electrodes, such as low

2023-12-13

Silicon based anode battery capacity

Although graphite has been used as an anode material for power batteries for decades, its large volume, high weight, and physical and chemical limitations make it difficult to meet the high energy density requirements of electric vehicles. Therefore, silicon-based anode materials are gradually replacing graphite and becoming a new direction in the development of power batt

2023-11-15

How to measure the conductivity of graphite powder

Graphite powder has high conductivity. The conductivity of graphite powder is an important factor in the conductive finished product of graphite powder. There are many factors that affect the conductivity of conductive graphite powder, such as the ratio of graphite powder, external pressure, environmental humidity, humidity, and even light. The following methods can usually be used to measure the conductivity of graphite powder:1. Voltammeter method for measuring resistanceSpecific method: Use a precision small range electricity meter or a resistance multimeter to measure and compare the experiment. You can use a small light bulb to measure its conductivity based on its brightness. If the light bulb is brighter, it indicates a smaller resistance.2. Measuring the conductivity of conductive graphite powder through resin methodGo buy some resin for conductive paint, add the same amount of conductive graphite powder, and then apply it on a board to measure its conductivity using a digital

2023-08-10

Will room temperature superconductivity become the next graphene

On July 22nd, a South Korean research team published a paper on the preprint website arXiv, claiming to have synthesized the world's first room temperature and atmospheric pressure superconductor, named LK-99.Superconductivity refers to superconductivity. Under normal temperature and pressure, almost all conductors have resistance, resulting in thermal energy loss during current conduction. Superconductors are materials that can conduct current with zero loss due to the disappearance of resistance, and have complete diamagnetism (internal magnetic induction strength is zero), with advantages such as stability, low loss, and fast transmission.Previously, superconducting materials needed to enter the superconducting state at lower temperatures. The keyword "room temperature superconductivity" mentioned by the Korean team in this paper refers to the phenomenon of superconductivity achieved under room temperature conditions. According to the standards of condensed matter physics

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.

What should I pay attention to when applying graphite machinery and equipment

1. Be careful when transporting or hanging. Do not drag and drag it on the ground. Do not pry up or use a galvanized steel wire rope to be tied immediately. Essence2. After the total installation, when welding or oxygen cutting of the steel case, it should be ensured that the safety of graphite and hydraulic sealing should be ensured (water can be injected in the shell), otherwise graphite should be removed.3. When connecting the external flanges, it is not forcibly installed. When the foot bolts are tight, the symmetry is symmetrical.4. The export and export valve of the opening and closing machine equipment should be slow to prevent the significant impact of raw materials.5. The application of materials, temperature and work pressure in applications should be strictly strictly in accordance with the requirements of the design plan.6. For the electric heater, when driving, you should first pass the raw material and pass the vapor; when used as a cooling or cooler, you should first pa

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

2023-07-11

The price of graphite powder of graphite manufacturers is more cost -effective

Graphite manufacturers' colloidal graphite powder has a good lubrication performance, high cost -effectiveness, and catalytic reaction characteristics. It is very durable at the same time. It can be made into various products. Collagen graphite powder is commonly used as lead -acid batteries, conductive plates, high -capacity lithium battery positive and negative polar conductors, and thermal lubricating solution raw materials.The corporates of colloidal galgin powder of graphite manufacturers are often used below:1. Good moisturizing characteristics, commonly used as agricultural and animal husbandry organic fertilizer metal catalyst production process in the production process of the production process.2. It can withstand a high temperature of thousands of degrees, and is often used to resist thermal lubricating solution raw materials and anti -corrosion lubricating solution raw materials.3. Powder -unsurgical decrease agent and metal alloy raw materials, lubricating solution in cab

2023-05-17

Graphite products and other purposes

Defense industryIn the defense industry, the nozzle of solid fuel rockets is also used to make solid fuel rockets, the nasal cone of the missile, the parts of the universe navigation equipment, the insulation material and the anti -ray material.Anti -anti -rust and anti -rust materialGraphite can prevent boilers from scaling. Tests from relevant units show that adding a certain amount of graphite powder (about use per ton of water) to the water can prevent the surface of the boiler from scaling. In additionWith the continuous development of science and technology, people have also developed many new uses on graphite. Flexible graphite products. Flexible graphite, also known as expansion graphite, is a new graphite product developed in the age. The United States has studied successful flexible graphite sealing materials, solving the problem of atomic energy valve leakage, and then Germany, Japan, and France have also begun to develop and produce. In addition to the characteristics of n

2023-02-22

How to clean up the active board?

1. Preparation before work: Wear a hood, raindrops, glue gloves, safety helmets, glue gloves must be allowed to simply water, sore water, and allow them to be allowed to work; Add 109 sodium hydroxide solution water solution; turn on the anode rod back cover, use both hands to gently display the graphite anode board from the anode rod, and migrate to the graphite cleaning slot soak for 30 minutes.2. Actual operation: Remove the graphite anode plate that soaks soaked for thirty minutes from the soaking solution, flatten the electroplating equipment on the wooden frame, and use 240#-320#water matte paper to clean the surface layer of the graphite anode plate. , Hold the positive film with one hand, gently press the policing paper with the other hand, and drink water to clean it until the stains are eliminated, and then use the water matte paper to remove the anode oxidation and touch the guidance. After that, clean all the liquid cold water, and check whether there is dirt on the surfac