How to buy high quality silicon powder
Metal silicon powder and silicon metal composition is the same, but the physical state is different, and the silicon metal powder is made of silicon metal grinding. Metal silicon also known as crystalline silicon, industrial silicon, the main use is as a non - iron - based alloy additives. Silica metal is made of quartz and coke smelted in an electric furnace. The content of silicon element is about 98%.
Silicon is one of the semimetallic, hard and brittle, at room temperature insoluble in acid, soluble in alkali. The properties of silicon metal are similar to germanium, lead, and tin, and have semiconductor properties. Silicon is abundant in the earth's crust, second only to oxygen and accounting for more than a quarter of its total weight, in the form of silicon dioxide or silicate. Silicon has two kinds of allotropes, one is a dark brown amorphous powder that is active and can burn in air, and the other is a stable crystal. Common silica and quartz are used in glass and other building materials, while high-quality quartz is used in alloys, metals and single crystals.
The smelting of silicon metal is a high-energy production, and the classification of silicon metal is usually based on the content of iron, aluminum and calcium, the three main impurities contained in the composition of silicon metal. According to the content of iron, aluminum and calcium in silicon metal, it can be divided into different grades. In industry, silicon metal is usually made by reducing silicon dioxide from carbon in an electric furnace. Silicon made in this way is 98% pure and is called silicon metal. After melting it again recrystallization, with acid to remove impurities, get purity of 99% silicon metal.
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