 Diatomite series products are carefully made from sediment of single-cell alga water plant. Because the category of diatorm is complex and porosity, the diatomite products has the un-competitive filtraing capability and absorbent capability than any other filtrating medium, at present it is widely used for filtrate-supporting dose, stuffing and carriers.
The diatomite series products made in our factory use good quality diatomite which contained more than 87% of silicon dioxide as its raw material, adopting purified coal gas as its fuel, it is formed after burning in revolving kiln and gas-dividing.
 The diatomite based products can be divided into the following three categories by production process:
Dried product: After the raw diatomite is dried under 100℃ to 200℃, and then purified by high pressure gas flow pulverization, the product can be made by classification, it appear grey white-light yellow.
Roasted product: The product is made through roasting the cleaned diatomite under high temperature of 700℃-900℃, high pressure gas flow pulverization and classification, it appears orange and brown.
Melting aided roasted product: The cleaned diatomite is mixed with proper amount of melting additive, ang roasted under 900℃-1200℃, pulverization and classification, the product appears white.
The diatomite based filtering agent can be used in filtering of fluids with different viscosity applied in industries of wine-making, brewage, pharmacy and sugar making, and it can be also used in filters with different specification.
1. Main chemical composing index of diatomite products
| Composition |
Sio2%≥ |
Al2O3%≤ |
Fe2O3%≤ |
CaO%≤ |
MgO%≤ |
Pb, mg/kg |
As, mg/kg |
| Dried product |
85 |
5 |
2.0 |
1.0 |
0.9 |
8 |
4 |
| Calcined product |
88.6 |
4.0 |
1.5 |
0.5 |
0.3 |
1.0 |
1.0 |
| Flux Calcined Product |
88.6 |
4.0 |
1.5 |
0.5 |
0.3 |
1.0 |
1.0 |
 Filling material and carrier in fine chemical industry
This series of products has a big areas, stable chemical character and strong adsorptive, it can used as stuffing, carrier in the dustries.
2. Physical, Chemical and Sanitary Index of Filter Aid of Diatomite
| Type |
AG-100# |
AG-500# |
AG-700# |
AG-800# |
AG-1000# |
AG-3000# |
| Description |
Calcined product |
Flux Calcined Product |
Flux Calcined Product |
Flux Calcined Product |
Flux Calcined Product |
Flux Calcined Product |
| Color |
Pink |
White |
White |
White |
White |
White |
| Specific Gravity g/cm3 |
2.1-2.3 |
2.1-2.3 |
2.1-2.3 |
2.1-2.3 |
2.1-2.3 |
2.1-2.3 |
| g/cm3Wet density |
0.38-0.48 |
0.38-0.48 |
0.38-0.48 |
0.38-0.48 |
0.38-0.48 |
0.38-0.48 |
| Ignition Loss% |
0.5 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
| D'arcy Permeability |
0.15-0.25 |
0.5-100 |
1.1-2.8 |
2.9-5.7 |
5.8-9.9 |
10Over |
| PH |
6-7.5 |
8-10 |
8-10 |
8-10 |
8-10 |
8-10 |
| Moisture, as shipped |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
| Water soluble%≤ |
0.4 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
| Acid soluble%≤ |
2.0 |
2.0 |
2.0 |
2.0 |
2.0 |
2.0 |
3. Main Performance, Index and Technical Parameter of Stuffing and Carrier of Diatomite
| Type |
AG-WX1# |
AG-WX2# |
AG-WX3# |
AG-WX4# |
AG-JXE# |
AG-JXB# |
| Description |
Calcined product |
Calcined product |
Flux Calcined Product |
Flux Calcined Product |
Dried product |
Dried product |
| Color |
Pink |
Pink |
White |
White |
Gray White |
Gray White |
| Specific Gravity |
2.1-2.3 |
2.1-2.3 |
2.1-2.3 |
2.1-2.3 |
2.1-2.3 |
2.1-2.3 |
| Wet density |
0.38-0.48 |
0.38-0.48 |
0.38-0.48 |
0.38-0.48 |
0.38-0.48 |
0.38-0.48 |
| Ignition Loss% |
0.5 |
0.5 |
0.4 |
0.4 |
6.0 |
12 |
| Ignition Loss(%)(μm) |
15-20 |
8-14 |
12-18 |
7.5-12 |
20-35 |
25-38 |
| PH |
6-7.5 |
6-7.5 |
8-10 |
8-10 |
5-7 |
5-7 |
| Moisture, as shipped |
0.5 |
0.5 |
0.5 |
0.5 |
6.0 |
1.8 |
| Absorb water |
200-300 |
200-300 |
200-300 |
200-300 |
180-250 |
180-250 |
| Absorb oil |
80-160 |
80-160 |
80-160 |
80-160 |
80-160 |
80-160 |
| Water soluble%≤ |
0.4 |
0.4 |
0.5 |
0.5 |
4.0 |
4.0 |
| Acid soluble%≤ |
2.0 |
2.0 |
2.0 |
2.0 |
8.0 |
8.0 |
|
