The Difference Between Silica Power And Microsilica
With people on a deeper understanding of microsilica and silica power
, silica powder and microsilica has been widely used, its commercial advantage and broad market space has been well-known. But most of its production of microsilica and silica fume manufacturers confuse the concept of them, only from the literal meaning confuse the two. In fact, microsilicon and silica power has a big difference. If the distraction did not clear, it easily lead to the trade negotiations mistakes, confusion in the market price of silica power. In the world, only China, the United States, Germany and a few other countries have the capacity of producing microsilica. With the strengthening of the national environmental protection efforts, imposed ferrosilicon alloy and industrial silicon manufacturer of environmental protection equipment installed at the same time, the introduction of policies to suppress the excessive development of high energy-consuming industries, the silica fume resources will become increasingly rich. Ferroalloy manufacturers in the face of the relevant preferential policies are canceled, should take the initiative to find the interests of the market for silica power recycling soot, and select the affordable environmental dust and dust recycling one dust removal equipment.
Microsilica is made from natural quartz (SiO2) or fused silica (natural quartz by high temperature melting, after cooling the amorphous SiO2) by crushing, ball milling (or vibration, jet mill), flotation, pickling purification, high-purity water treatment and many other process micronized processing. Silica power, also known as silica fume, condensed silica fume, silicon power. The ferroalloy smelting ferrosilicon and industrial silicon ore thermoelectric furnace to produce a large number of highly volatile SiO2 and Silicon gas, gas emissions and air rapid oxidation condensation precipitation. It is a large industrial smelting byproduct, the whole process needs with environmental protection equipment for recycling, because the quality is relatively light, need to use encryption device to encrypt.
The appearance of microsilica and silica power is relatively easy to discern. Microsilica its pure quality, color white, the particles are balanced, a non-toxic, tasteless, non-polluting inorganic non-metallic materials; gray or dark gray, depending on the silica raw materials, reducing agents or furnace conditions, the vast majority of silica power . In the formation process, by the effect of surface tension due to the phase change process, it formed a non-crystalline phase, amorphous spherical particles, and the surface is relatively smooth, and some are aggregates of the plurality of ball particles stick together. The white silica power is rare, the number is relatively limited.
From the performance of silica powder and microsilica we can see: the Microsilica have good temperature resistance, corrosion, poor thermal conductivity, high insulation, low thermal expansion, chemical stability, hardness and excellent performance.
There are many differences between them from the indicators. Specifically, the chemical composition of microsilica and silica fume is substantially the same, the main ingredient is silica, and they are containing sodium oxide, calcium oxide, magnesium oxide, iron oxide, alumina and other impurities. From the market, the potential market of microsilica is bigger than silica powder market, according to the surveys by metal powder exporter there is still much room for microsilica development in china. From the above, we can see that microsilica and silica fume have essential different. Nature of different decides the different of their use.
Source:http://www.mhcmp.com
by: anelwew
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