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What is spherical Quartz Powder?
After being purified from quartz stone, spherical quartz powder is pulverized and ultrafinely ground. The powder then goes through a high temperature field so that its phase form, crystal form, shape, and state change instantaneously, from solid state into molten state, then to solid state again, then to crystallized state. Amorphous powder is made from irregularly angular particles and transformed into regular spherical pieces.
The main method for preparing spherical powder of quartz is
1. Flame melting is used primarily to mass produce spheroidized quartz dust. The heating device must have a stable temperature, adjustable temperature ranges, and there is no secondary pollution to quartz powder. This technology is key. The ball-forming principle is that the high-temperature fire spray gun produces a high temperature flame between 1600 and 2000. When the powder enters a high-temperature flame area, its angular surfaces absorb heat. The heat is then transferred to the powder’s interior, where it is completely molten. The action of surface tension means that objects tend to be in a stable condition. Spherical is the best state for forming a ball.
2. The local thermodynamic equilibrium (or thermal plasma) is another name for this plasma. The main feature of thermal plasma is the fact that the plasma’s electron temperature, ion temperature and gas temperature are all almost identical. The thermal plasmas are arc plasma, high frequency and induction plasma.
The high-frequency plasmafusion method is used for the preparation of spherical quartz. This method has a moderate range, stable control, high output, and can achieve a high rate of spheroidization, making it more suitable for production. The principle and procedure are similar to that of flame melting. This essentially changes the high-temperature heat source into plasma generator.
Compressed air is used as the working gas. The volume of the working gases is 10m3/h. The high-frequency generator generates heat by generating high-temperature gas at 4000-7000. The silica is carried from the top of the plasma reactor furnace to the arc region by the feeder. After melting and gasifying, the powder is then transported through the feeder. The powder is quenched using a special quencher, then collected by gravity and bag dust (nanoscale). In a matter of 1s-2s the spherical and nanoscale SiO2 can be obtained.
3. Chemical synthesis
To obtain silica sol, heat the silica emulsion with ammonia water, or ammonium bicarbonate. The gel is then treated by acid to produce hydrated sphericalsilica. This product has a low uranium level, which is a characteristic. However, it is also easy to agglomerate.
Tech Co., Ltd. is a professional spherical powder supplier. It has over 12 years of experience in chemical product research and development. We accept credit cards, T/T and Paypal payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.
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