Silicon carbide price quotation
Silicon carbide is divided into black silicon carbide and green silicon carbide. Affected by the economic cycle, the US dollar interest rate hike and the Russian-Ukrainian war, the price of black silicon carbide ranges from $1,400/ton to $2,700/ton, and the price of green silicon carbide is $2,000/ton to $3300/ton, different mesh, the price difference is relatively large.
By the continued influence of the market and the continued changes in supply and demand, the subsequent silicon carbide raw block prices continue to be bullish. Green silicon carbide sand fine number of serious shortage.
If there is demand in the near future, it is recommended to plan ahead!
Silicon carbide Introduction
Adamantine, also known as silicon carbide (Sic) is made from quartz sand, petroleum coke (or coal coke), wood chips (salt is needed to produce green silicon carbide) and other raw materials smelted at high temperatures in resistance furnaces. Silicon carbide also exists in nature as a rare mineral, moissanite. Silicon carbide is also known as carbon silica. In the contemporary C, N, B and other non-oxide high-tech refractory raw materials, silicon carbide for the most widely used, the most economical one, can be called gold steel sand or refractory sand. At present, China’s industrial production of silicon carbide is divided into two kinds of black silicon carbide and green silicon carbide, are hexagonal crystal, specific gravity of 3.20 ~ 3.25, microhardness of 2840 ~ 3320kg/mm2.
Black Silicon carbide and Green Silicon carbide
There are two basic varieties of silicon carbide, black silicon carbide and green silicon carbide, both of which are α-SiC.
①Black silicon carbide contains about 95% SiC, its toughness is higher than green silicon carbide, mostly used for processing materials with low tensile strength, such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals, etc.
②Green silicon carbide contains about 97% or more sic, good self-sharpening, mostly used for processing cemented carbide, titanium alloy and optical glass, also used for honing cylinder liners and fine grinding high-speed steel tools.
In addition, there is cubic silicon carbide, it is a special process to produce yellow-green crystals, used to make abrasives suitable for bearing ultra-fine machining, can make the surface roughness from Ra32 ~ 0.16 microns to Ra0.04 ~ 0.02 microns at a time.
Scope of application of silicon carbide
The application range of silicon carbide has four main application areas, namely: functional ceramics, advanced refractory materials, abrasives and metallurgical raw materials.
Silicon carbide crude material can be supplied in large quantities, which cannot be considered as high-tech products, while the application of nanoscale silicon carbide powder with extremely high technical content is unlikely to form economies of scale in a short time.
- (1) as abrasives, can be used to make abrasives, such as grinding wheels, oil stones, grinding heads, sand tiles, etc.
- (2) As metallurgical deoxidizer and high temperature resistant material.
- (3) High purity single crystal, can be used to manufacture semiconductors, manufacturing silicon carbide fiber.