Process for preparing ultrahigh pure quartz sand through silica raw material
A technology of quartz sand and silica, which is applied in the technical field of preparing ultra-high-purity quartz sand from silica raw materials, can solve the problems of difficult to remove and cannot effectively remove impurities wrapped in quartz sand, and achieve the effect of improving efficiency and obvious effect
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Embodiment 1
[0053] Proceed as follows:
[0054] (1) First, artificially sort the vein quartz raw materials to remove impurities and foreign matter that are clearly observed by the naked eye;
[0055] (2) Place the artificially sorted vein quartz stone in a muffle furnace for calcination, heat it to 950°C and keep it warm for 3 hours. After the heat preservation is over, take out the quartz stone directly and put it into flowing cold water for quenching;
[0056] (3) Dry the quenched vein quartz and crush it to 80-100 mesh with a double roller machine;
[0057] (4) Using an electromagnetic induction roller magnetic separator with a magnetic field strength of 2.0 Tesla, physically remove impurities from the crushed quartz sand, and after removing the magnetic substances in the quartz sand, use a high-voltage electric separator with a voltage of 25 Thousand volts, high-voltage electric separation and removal of impurities on quartz sand to remove charged impurities;
[0058] (5) Pickling t...
Embodiment 2
[0067] Proceed as follows:
[0068] (1) First, artificially sort the quartzite raw material to remove impurities and foreign matter that are clearly observed by the naked eye;
[0069] (2) Place the artificially sorted quartz stone in a muffle furnace for calcination, heat it to 1000°C and keep it for 3 hours. After the heat preservation is over, take out the quartz stone and put it in flowing cold water for quenching;
[0070] (3) Dry the quenched quartz stone and crush it to 80-100 mesh with a double roller machine;
[0071] (4) Using an electromagnetic induction roller magnetic separator with a magnetic field strength of 2.0 Tesla, physically remove impurities from the crushed quartz sand, and after removing the magnetic substances in the quartz sand, use a high-voltage electric separator with a voltage of 25 Thousand volts, high-voltage electric separation and removal of impurities on quartz sand to remove charged impurities;
[0072] (5) Pickling the quartz sand treated...
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