2023-03-14

Do you know what is the difference between graphite powder and coal powder?

The chemical elements of the two are the same, but the structure is completely different. The coal is a molecular crystal, and the graphite is a atomic crystal. Usually we usually say that C powder is molecular crystals.Graphite: Natural crystal graphite, shaped like fish phosphorus, is a hexagonal crystal system, with layer -like structure, high temperature resistance, conductivity, heat conduction, lubrication, plasticity, acid and alkaline resistance. The scale graphite is divided into four categories according to the fixed carbon content: high pure graphite, high carbon graphite, medium carbon graphite, low -carbon graphite.Graphite powder is soft, gray -black; raw materials have heat -resistant conductivity, which can be used as refractory insulation materials, conductive raw materials and wear -resistant moisturizing raw materials. Graphite's unique process is processed into milk products. It is smooth and exquisite in viewing. It must use containers such as barrels and other co

2023-04-19

Method of making low -density puffed graphite blocks with flexible graphite

In recent years, various types of low -density carbon graphite materials have been actively researched, including carbon (graphite) foam made of asphalt or polymer resin, as well as using high repetition pulse laser to abolish carbon materials The carbon nano foam formed. Granny Gygm is also a low -density carbon graphite material. Due to the simple preparation process and low production cost, it is convenient for large -scale industrialized production. In recent years, the research on expandable graphite has continued to deepen. The following editor of Jinhui Graphite Company introduced the method of soaking flexible graphite in the concentrated acid into a low -density puffed graphite block:The insect shape and weak macro structure of puffed graphite restrict their application. If it can be made into a stable -swollen graphite block, it will be conducive to puffed graphite to play its role as adsorption, heat insulation, heat conduction and other functional materials. The flame reta

2023-10-20

The Use of Spherical Graphite in Graphite Powder

Spherical graphite is widely used due to its excellent conductivity, which is related to the use of graphite powder. Graphite products have been widely used in many domestic and foreign enterprises and have received widespread praise in the market. Graphite is widely used in the electrical and electronic industry as an electrode, positive electrode for rectifiers, graphite gasket, coating technology for telephone components, television picture tubes, and so on. Research on wear-resistant and lubricating system materials: Graphite is often used as a lubricant in mechanical development industrial enterprises. Graphite electrodes can be widely used in smelting and various alloy steel and iron alloys. At this time, our strong current can be introduced into the melting zone of the electric furnace through the working electrode.Spherical graphite has a wide range of applications in our daily lives regarding the use of graphite powder. What are its characteristics?1. High temperature resista

2023-07-10

Expansion graphite, a new multifunctional insulation material

Expansion graphite is a kind of graphite that can expand and shrink in high temperature environments. This material has very special physical and chemical properties. Graphite is a kind of carbon, and its structure is connected by hexagonal carbon atoms. Generally, graphite can be completely melted, but at high temperature, due to the enhancement of the interaction between carbon atoms, graphite can form more stable stability The structure of the expansion is achieved.1. The development of expansion graphiteThe development of expansion graphite dates back to the 1960s. At that time, scientists discovered that graphite can be deformed regularly within a certain temperature range, and the translucent graphite can remain stable. Subsequently, scientists also found that under certain conditions, graphite at high temperature can be used to create a variety of structures, and these structures can be used to support greater weight and develop the technology of expanding graphite.Second, the

2023-02-07

Calf mineral development overview

The world's natural graphite output in 2010 was 1.1 million tons. China graphite output is 800,000 tons (crystal graphite and cryptocrystalline graphite), accounting for 73%of the world's output. In the past 30 years, graphite production has ranked first in the world.

2023-05-30

Introduction to carbon elements

Carbon is a very common element that exists in the atmosphere and crust in many forms. Carbon monouples have been recognized and used for a long time. A series of carbon compounds -organic matter is the foundation of life. Carbon is one of the ingredients of raw iron, cooked iron and steel. Carbon can form a large number of compounds in chemical self -combination, which is an important molecule in biology and business. Most molecules in organisms contain carbon.Existing formThe form of carbon existence is diverse, including crystalline single -quality carbon such as diamond and pulse graphite; there are fordless carbon and coal; there are complex organic compounds such as animals and plants; carbonate such as marble. The physical and chemical properties of single carbon depend on its crystal structure. High -hardness diamond and soft and smooth pulse graphite crystal structures are different, each with its own appearance, density, melting point, etc.CharacteristicsThe chemical propert

2023-12-12

Graphite heater

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

2023-04-03

The shortcomings and prevention of graphite mold heat treatment process

The lubrication of sliced graphite is mainly reflected in two aspects

1. Silver-like Gention-Environmental atmospheric lubricationThe essence of lubrication of sheet -like graphite is its laminar crystal structure. The initial raw materials for preparation of expansion graphite are high -carbon -like graphite. Other chemical reagents such as concentrated sulfuric acid (more than 98%), hydrogen peroxide (more than 28%), and potassium permanganate are industrial -grade reagents. The general steps of preparation are as follows: At the appropriate temperature, add different proportion of hydrogen peroxide solution, natural scales and concentrated sulfuric acid to different programs, react for a certain period of time under continuous stirring, and then wash to neutrality, centrifugal, dehydrated, and dehydration. Dry vacuum at 60 ° C.2. Film graphite-solid lubricant and lubricant additiveThe lubrication performance of slices graphite is also affected by graphite particles. Some research and test results show that whether it is a natural piece of graphite or