About Selenium particles ：
Selenium particles usually appear dark orange or reddish brown, similar to selenium crystals. It is a solid substance with a fixed shape and size but different from selenium crystals. The size of selenium particles is usually in the micron scale, that is, between tens and hundreds of microns. Particles of this size have certain applications in optical and electron transport. Selenium particles have high chemical stability, but they can also react with certain chemicals under certain conditions. For example, selenium particles can react with substances such as hydrogen, oxygen, or hydrogen sulfide to produce corresponding selenides or sulfur selenides. These reactions indicate that selenium particles have high reactivity and can interact with other elements or compounds. In addition, selenium particles can also be used as pigments, coatings, and lubricants. Because of its bright color and good chemical stability, selenium particles are widely used to produce pigments and coatings. At the same time, selenium particles can also be used as an additive to lubricants to improve the lubrication effect.
Product Name: Selenium granules
CAS No:7782-49-2
EINECS No. :231-957-4
Molecular formula :Se
Melting point: 221 ℃
Boiling point:684.9 ℃
Density:4.81 g/cm³
Atomic weight:78.96g/mol
Atomic number: 34.
Element type: non-metallic element
Size：1-6mm、2-5mm、2-4mm、2-3mm、3-4mm, etc.
Purity of selenium granules
Chemical purity: 99.999%, the total content of silver, aluminum, bismuth, cadmium, copper, iron, indium, magnesium, nickel, lead, antimony and tellurium is less than 10ppm.
Ultra-pure selenium: purity 99.9999%, total content of silver, aluminum, bismuth, cadmium, copper, iron, indium, magnesium, nickel, lead, antimony and tellurium less than 1pp.
Production method of selenium
Physical method
The physical method uses a physical process to prepare selenium particles, and the common methods are the mechanical crushing method and vacuum condensation method.
(1) mechanical crushing method
Mechanical pulverization uses grinding or crushing equipment to crush selenium crystals or selenide raw materials into a certain particle size. The advantage of this method is that the process is simple, the cost is low, and it can be mass-produced. However, due to the large hardness of selenium particles, impurities may be introduced in the crushing process, reducing the purity of the product. In addition, dust generated during the crushing process can also pose potential hazards to the environment and workers' health.
(2) Vacuum condensation method
The vacuum condensation method prepares selenium particles by evaporating raw selenide materials under a low-temperature vacuum. The advantage of this method is that high-purity selenium particles can be prepared, the particle size is small, and the distribution is uniform. However, due to the need to use large vacuum equipment, the production cost is high and unsuitable for large-scale production. In addition, since the selenide raw materials may produce toxic and harmful gases during the evaporation process, it is necessary to pay attention to environmental protection and safety issues in the production process.
Chemical method
The chemical method uses a chemical reaction to prepare selenium particles; the common methods are the solution, spray pyrolysis, and so on.
(1) Solution method
The solution method is to add another metal ion or non-metal ion to the solution of dissolved selenide raw material to generate selenium particles through a chemical reaction. Selenium particles with small size and uniform distribution can be obtained by this method. However, the production cost is high due to the need to use many organic solvents and chemical reagents. It may produce wastewater and waste gas with a certain environmental impact.
(2) Spray pyrolysis method
The spray pyrolysis method is to spray the selenide raw material solution into a high-temperature furnace to decompose the solvent-solute and generate selenium particles under high-temperature conditions. The advantage of this method is that selenium particles with high purity and small particle size can be prepared. However, due to the need to use large, high-temperature furnaces and spray equipment, the production cost is high and unsuitable for large-scale production. In addition, since toxic and harmful gases may be produced during spray pyrolysis, environmental protection, and safety issues in the production process need to be paid attention to.
Application areas of selenium granules:
Electronics industry: Selenium particles are used as electronic materials and photoelectric materials in the electronics industry. Because of its high conductivity and stability, selenium particles are often used as the manufacturing material of electronic devices such as electronic paste and conductive adhesive. In addition, selenium particles have a wide range of applications in photoelectric conversion and optoelectronic device manufacturing.
Photoelectric materials: Selenium particles are an important photoelectric material with many applications in manufacturing photoelectric devices, such as photoelectric devices, solar cells, photoresistors, and photomultiplier tubes. Selenium particles have high photoelectric conversion efficiency and stability and are widely used in photoelectric detection and photoelectric conversion.
Glass industry: Selenium particles are used as colorants and shading agents in the glass industry. Because of their high refractive index and scattering coefficient, selenium particles are often added to glass to increase its transparency and brightness. At the same time, selenium particles can also improve glass's chemical stability and weather resistance.
Lubricant industry: Selenium particles are used as lubrication additives in the lubricant industry. Because selenium particles have good lubricating properties and high-temperature resistance, adding them to lubricants can improve the lubrication effect and prolong the lubrication time.
Pigments and coatings industry: Selenium particles are used as a manufacturing material for pigments and coatings in the pigments and coatings industry. Because of its good coloring power and chemical stability, selenium particles are often used as colorants and color-developing agents for pigments and coatings.
Solar cells: Selenium particles can be combined with other materials, such as copper, to make solar cells. Selenium-copper solar cells are a type of solar cell that has a long history and is still in use, with high photoelectric conversion efficiency and stability.
Environmental monitoring and analysis: Selenium particles can be used in environmental monitoring and analysis. For example, selenium particles can be used as tracers to monitor the flow of water and the diffusion of pollutants in water bodies. In addition, selenium can be used to analyze trace elements in soil, agricultural products, and water.
Packaging of selenium granules:
We have many different kinds of packing, which depend on the antimony powder Sb powder quantity.
Selenium granules packing: vacuum packing, 1kg/bag, 25kg/barrel, or as your request.
Selenium granules shipping: could be shipped out by sea, by air, or by express as soon as possible once payment receipt.
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
If you are looking for high-quality Selenium granules, please feel free to contact us and send an inquiry. ([email protected])
