A chlorination system and method for producing high-purity quartz sand
A high-purity quartz sand and chlorination system technology, applied in the field of high-purity quartz sand production equipment, can solve the problems of increasing environmental protection pressure, waste of resources, and poor uniformity, so as to save resources and costs, reduce environmental protection pressure, and improve production efficiency Effect
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Embodiment 1
[0045] Described system is the reaction cavity (10) that bottom inclination angle α is 30 °, and cavity (10) and hot-blast stove (12) liner are high-purity quartz bricks (SiO 2 content ≥ 99.99%), the material of the air jet (11) is platinum-rhodium alloy, the ratio of the height of the hot blast stove (12) to the length of the bottom surface = 4, the heating element is a silicon carbide rod, the aperture of the checker brick is 20mm, and the heating area is 45m 2 / m 3 , the length of the gas pipeline between the outlet of the gas compressor (5) and the gas injection port (11) is 5 meters, and the number of holes in the vertical direction of the annular gas outlet (7) is 8.
[0046] The specific operation method is to open the valve of the feed inlet, and add the pretreated quartz sand with a particle size of 40-160 mesh into the cavity (10), and the addition amount is 1 meter from the top of the quartz sand pile to the bottom of the cavity (10). , open the gas source (3) with...
Embodiment 2
[0050] Using the same chlorination system as in Example 1, the pretreated quartz sand with a particle size of 40-160 meshes is added to the cavity (10), and the addition amount is that the height from the top of the quartz sand pile to the bottom of the cavity (10) is 1.5 m, open the source of gas (3) with blower (4) and gas compressor (5) with mixed reaction gas (mol ratio H 2 :Cl 2 =1.2:1) was sent into the whole system to be purged for 5 minutes, and the hot blast stove (12) was opened after closing the blower (4), the gas compressor (5) and the feed inlet valve, and the temperature in the hot blast stove (12) was stabilized at 1100 At ℃, turn on the gas compressor (5), adjust the outlet pressure to 0.5MPa, and the flow rate to 5m 3 / min, the mixed gas flow is circulated and pressed into the hot blast stove (12) under the action of the gas compressor (5) and is sprayed into the reaction chamber (10) through the gas injection port (11) after being heated by the checker bric...
Embodiment 3
[0054] Described system is the reaction chamber (10) that bottom inclination angle is 45 °, and chamber (10) liner is high-purity quartz brick (SiO 2 content ≥ 99.99%) the hot blast stove (12) is lined with silicate-coated refractory bricks, the air jet (11) is made of carbon-carbon composite material, and the ratio of the height of the hot blast stove (12) to the length of the bottom surface=7, heating The element is a silicon molybdenum rod, the hole diameter of the checker brick is 30mm, and the heating area is 60m 2 / m 3 , the length of the gas delivery pipeline between the outlet of the gas compressor (5) and the gas injection port (11) is 15 meters, and the number of openings in the vertical direction of the annular gas outlet (7) is 18.
[0055] The specific operation method is to open the valve of the feed inlet, and add the pretreated quartz sand with a particle size of 40-160 mesh into the cavity (10), and the addition amount is 1 meter from the top of the quartz sa...
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