Ceramic Grain Filters
1. Product Description
This ceramic Grain Filters also named Ceramic Porous Filters which is widely used in water treatment. They are new products to replace the traditional quartz sand filters.
Features:
1) Advanced water treatment filter and biological media developed by our company
2) The most popular filtration media for water treatment
3) Types: porous sand or balls, porous bricks, porous pipes
4) Being used by many waster water treatment plants and projects
5) Spherical shape
6) Uniform grains
7) Red-brown appearance
8) Porous surface and body
9) Interwoven net and strong absorption
10) Under the same filtering speed conditions, its capacity is 100% higher than quartz pool, and it saves 30% to 40% volume of the washing water required when recoil rinsing compared to quartz sand. It also has a quick filtering speed and long life cycle.
2. Chemical composition of Ceramic Grain Filters
Composition
|
Content %
|
Al2O3
|
12~25
|
SiO2
|
50~70
|
Fe2O3
|
0.5~10
|
MgO
|
1~5
|
CaO
|
1~5
|
KO2+Na2O
|
3~8
|
The balance
|
<= 2
|
3. Technical Indexes of Ceramic Grain Filters
Item
|
Index
|
Appearance
|
Rough ball; porous, red & brown
|
Particle Size, mm
|
20~30
|
Apparent density, g/cm3
|
1.2 ~ 1.6
|
Bluk density, g/ml
|
1.0
|
Total porosity, %
|
60 ~ 80
|
Specific surface area, cm2/g
|
5000 ~ 10000
|
Attrition & crushing rate,%
|
≤ 2
|
Uneven coefficient
|
K80= 1.2~1.5
|
Even coefficient
|
K60= 1.0~1.3
|
Solubility in acid,%
|
≤ 2
|
Solubility in alkali,%
|
≤1.5
|
Soluble substance
|
Not any harmful elements contained
|