Defluoridation activated alumina(White granule)

Activaeted alumina:
1)ISO9001:2000 is certificat
2)Large surface area
3)Strong adsorption ability





Description
Activated alumina
is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 square metres/g. The compound is used as a desiccant (to keep things dry by absorbing water from the air) and as a filter of fluoride, arsenic and selenium in drinking water. It is made of aluminium oxide (alumina; Al2O3), the same chemical substance as sapphire and rubies (but without the impurities that give those gems their color). It has a very high surface-area-to-weight ratio. That means it has a lot of very small pores, almost like tunnels, that run throughout it.

Defluoridation agent:
Activated alumina is also widely used to remove fluoride from drinking water. In the US, there are widespread programs to fluoridate drinking water. However, in certain regions, such as the Jaipur region of India, there is enough fluorine in the water to cause fluorosis. Activated alumina filters can easily reduce fluoride levels from .5 ppm to less than .1 ppm. The amount of fluoride leached from the water being filtered depends on how long the water is actually touching the alumina filter media. Basically, the more alumina in the filter, the less fluoride will be in the final, filtered water. Lower temperature water, and lower pH water (acidic water) are filtered more effectively too.

Product technical data
Index name
Al
2
o
3

%
Sio
2
%
Fe
2
o3
%
Na20
%
Burning reduction
%
Apparent density
g/ml
Specific surface area
M
2
/g
Hole volume
Ml/g
Crush strength
N/particle
Technical


requirements
≥92
≤
0.10
≤
0.04
≤
0.45
≤8
≤0.75
≥260
≥0.40
≥20
1-2mm
≥92
≤
0.10
≤
0.04
≤
0.45
≤8
≤0.75
≥260
≥0.40
≥40
2-3mm
≥92
≤
0.10
≤
0.04
≤
0.45
≤8
≤0.75
≥260
≥0.40
≥80
3-5mm
≥92
≤
0.10
≤
0.04
≤
0.45
≤8
≤0.75
≥260
≥0.40
≥100
4-6mm
≥92
≤
0.10
≤
0.04
≤
0.45
≤8
≤0.75
≥260
≥0.40
≥140
5-8mm

The above technical datas are just for your reference
Packaging:25kg in the woven bag with inner plastic film or as your request