Filter medium and preparation method thereof
A filtering medium and filtering precision technology, applied in the field of filtering medium and its preparation, achieves the effects of low production cost, safe production process and controllable filtering precision
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Embodiment 1
[0027] Activated carbon powder (60-325 mesh) 40 polyvinyl alcohol 7 water 53
[0028] Its preparation method is as follows:
[0029] Weigh each raw material according to the percentage of formula quantity, and the operation steps are as follows:
[0030] ① Weigh each raw material according to the percentage of formula quantity.
[0031] ②Heat water and water-based binder polyvinyl alcohol to above 90 degrees, mix and stir to make glue.
[0032] ③Mix the glue and activated carbon powder and stir evenly.
[0033] ④Put the raw materials mixed in step ③ into the pre-prepared mold for stamping or extrusion molding, and then slowly heat to 155-165 degrees to dry the moisture in the mold to shape it, that is, it becomes porous Filter media of specified shape.
Embodiment 2
[0035] Activated carbon powder (80-325 mesh) 25 zeolite powder (100-325 mesh) 12 polyvinyl alcohol 7 ammonium bicarbonate 3 water 53
[0036] Its preparation method is as follows:
[0037] Weigh each raw material according to the percentage of formula quantity, and the operation steps are as follows:
[0038] ① Weigh each raw material according to the percentage of formula quantity.
[0039] ②Heat water and water-based binder polyvinyl alcohol to above 90 degrees, mix and stir to make glue.
[0040] ③Mix the glue with activated carbon powder, zeolite powder and ammonium bicarbonate and stir evenly.
[0041] ④Put the raw materials mixed in step ③ into an extruder to extrude into a tubular shape, and then slowly heat to 160-170 degrees to dry the moisture in the shape to shape, that is, to become a porous tubular filter medium .
Embodiment 3
[0043] Activated carbon powder (200-325 mesh) 30 diatomite (40-325 mesh) 5 polyvinyl alcohol 5 water 60 Its preparation method is as follows:
[0044] Weigh each raw material according to the percentage of formula quantity, and the operation steps are as follows:
[0045] ① Weigh each raw material according to the percentage of formula quantity.
[0046] ②Heat water and water-based binder polyvinyl alcohol to above 90 degrees, mix and stir to make glue.
[0047] ③Mix the glue solution with activated carbon powder and diatomaceous earth and stir evenly.
[0048] ④Put the raw materials mixed in step ③ into a punching machine and punch them into blocks, and then slowly heat to 160-170 degrees to dry the moisture in the molded body to shape, that is, to become a porous block filter medium.
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