2023-09-22

Unique chemical properties of industrial graphite products

Graphite is an important mineral resource in the 21st century, and China ranks first in the world in terms of graphite ore reserves. With the improvement of graphite product processing technology, it has been widely used in fields such as chemical engineering, smelting, casting, new materials, molds, aerospace, etc. We often see many chemical properties of graphite products in the industry, such as graphite crucibles, graphite heaters, graphite molds, etc(1) High temperature resistance: In smelting, the melting point of graphite products is 3850 ± 50 ℃, and the boiling point is 4250 ℃. Even after being ignited by an ultra-high temperature arc, the weight loss and thermal expansion coefficient are very small. The strength of graphite increases with temperature, and at 2000 ℃, the strength of graphite doubles.(2) Good conductivity and thermal conductivity: The conductivity of graphite products is 100 times higher than that of ordinary non-metallic minerals. The thermal conductivity exce

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.

Scales graphite price tends to be stable

At the beginning of the month, the price of scales in Shandong was stable as a whole. At present, the mainstream price of -195 mainstream prices are 6300-6500 yuan/ton, which is the same as last month. Entering winter, most of the scale graphite companies in the Northeast are suspended for production holidays. Although a few companies are in production, the output is reduced and the inventory reserves are not much.The scale of the scale graphite market has been poor some time ago and the demand for material resistance has declined, which led to a decline in the price of scales, and corporate quotations were chaotic. As the Spring Festival holiday approaches, due to the suspension of production in the Northeast region, graphite supply has declined, and downstream enterprises have been basically completed. The supply demand for scales graphite market is plain, and the offer is relatively stable.In 2021, the export situation of scales was relatively sluggish. According to customs statist

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

2023-08-09

Types and classification of electrochar products

Electric carbon products, also known as electrical carbon products, involve carbon graphite materials used in the power and electronic industries, including carbon brushes for electric motors, electric locomotive pantograph sliders, and other carbon graphite products used in the electronic industry.(1) Brushes for motors. Electric carbon products mainly use electric brushes. A brush is a sliding contact body that carries conductive current through the motor commutator or collector ring. Brushes can be divided into soft brushes, medium hard brushes, and hard brushes based on their material hardness; According to the purpose of the brushes, they can be divided into steam turbine generator brushes, steel rolling motor brushes, traction motor brushes, automotive and tractor brushes, electric tool brushes, aircraft brushes, and aerospace motor brushes; According to the color of the brushes, they can be divided into black brushes and colored brushes; According to the composition of raw mate

2023-02-10

Graphite development direction

Mainly deep processing, realize some important engineering projects, build a complete industrial chain, and guide the healthy and scientific development of the graphite industry. The first is the transformation of old technical equipment; the second is the current hot technical products of the development of charcoal graphite materials, such as the negative materials of lithium -ion batteries, the industrialization and intensiveization of the same -sex graphite, hig

2023-11-16

Classification of Graphene

There are two classification methods for graphene. One is based on the number of layers, which can be divided into four categories: single-layer, double-layer, few layer, and multi-layer products; Another type of product can be divided into three categories according to its form: powder, slurry, and film. Graphene powder and graphene thin film are currently the two main forms of graphene materials. The former is mostly doped in other materials and is widely used in coatings and lithium-ion batteries; Graphene thin films are widely used in the fields of electronics, photons, and optoelectronic devices due to their advantages of transparency, conductivity, and flexibility. Different graphene products have certain differences in raw materials due to different preparation methods. Graphene powder is mainly formed by physical or chemical methods, and the main raw material is natural graphite. Graphene thin films are mainly deposited by chemical vapor deposition, and their raw materials are

2023-05-16

Graphite products efficacy and advantages

First, graphite products have good adsorption.The gap structure of charcoal makes charcoal good adsorption, so charcoal is often used as adsorption materials for adsorption of water, odor, toxic substances, etc. We have done experiments. The graphite baking sheet used in the barbecue a few days ago looks very clean, but it will be heated on the induction cooker. We will see the fat and harmful substances adsorbed during the last time. Wipe it with a clean dining paper and use it.Second, graphite products have good thermal conductivity, fast heat transfer, uniform heating, and saving fuel.The baking sheet made of graphite, the pot, etc. heated quickly, and the fired food is evenly heated, cooked from the inside, the heating time is not only pure, but it can also lock the original nutrients of the food. We have done experiments. When we use graphite baking pan to barbecue, the induction cooker is hitting the fire at the beginning. It can be preheated in only 20-30 seconds. When you star

2023-10-23

The production method of graphite bearings

Graphite bearings, due to their self-lubricating, high and low temperature resistance, corrosion resistance, and other characteristics, can meet the sealing requirements for strong corrosion, flammable, explosive, and radioactive media. Effectively solving the problems of "running, emitting, dripping, and leaking" in chemical equipment, it has a good effect on improving labor conditions, product quality, and productivity.Graphite bearings can be divided into rolling bearings and sliding bearings, and there are also different materials such as metal, non-metal, and composite materials. Graphite bearings are commonly used in sliding bearings, which are further divided into radial bearings and thrust bearings. The article mainly analyzes carbon graphite bearings, bronze graphite oil bearings, and embedded graphite bearings.The manufacturing method of graphite bearings is characterized in that it is achieved by the following technical solutions:1) . Model making: polystyrene foam plastic

2023-10-12

What is the heating principle of vacuum furnace heating graphite tubes?

The principle is to quantitatively inject the sample into a graphite tube using a sampler, and use the graphite tube as a resistance heating element. After being energized, the sample quickly heats up to achieve atomization. The heating power supply, maintenance gas control system, and graphite tube furnace are composed. An external power supply is added to both ends of the graphite tube to supply energy to the atomizer. The current flows through the graphite tube to generate a temperature of up to 3000 ℃, causing the measured element in the graphite tube to become ground state atomic vapor. The maintenance gas control system is used to control the instrument startup of maintenance gas, maintain the flow of Ar gas, and cut off the Ar gas flow after the air combustion is completed. The Ar gas in the external gas path flows along the outer wall of the graphite tube to maintain it from being burned, while the Ar gas in the internal path flows from both ends of the tube to the center of t