Main Content
Diatomite
The Diatomaceous earth are carapaces and skeletons of unicellular microscopic seaweeds, rich is silica, of sedimentary origin of lacustre regions. The diatomaceas or diatomaceous algae live in humid rocks or land, lakes or seas. This way, their physical structure and abundance are related to the climate conditions and to the quality of the water.
A The definition of application of Diatomite depends on the size and strucutre of the carapaces and varies according to the region from where it is extracted, and to the treatment used in the processing.
Most common uses are:
- As filtering auxiliary or supporter;
- As thermal and acoustic isolator;
- As load in a wide range of products;
- As absorbent of liquids and gases;
- As construction material in mixtures with mortar, cement or concrete;
- As abrasive.
Diatomite has a number of applications and this is possible due to its properties:
- Low specific weight;
- Large surface area;
- Insignificant thermal and acoustic conductibility;
- High absorption power;
- Intercity to acids;
- Resistance to bacterias development;
- Non-combustibility.
Applications
- Water treatment
- Chemical Industry
- Cements and refractory
Technical Information
- FILTRATION DIATOMITE
- Physical Characteristics
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TYPE M – 35 M – 35D M – 45 M – 4 M – 4D M – F4 M – 3 Retention M 325 (%) 20 – 35 25 – 40 20 – 35 20 – 35 20 – 30 20 – 30 20 – 25 Apparent density (g/l) 340 – 380 290 - 370 340 – 450 330 – 450 300 – 400 300 – 400 300 – 400 Max. Moisture (%) 1 1 1 1 1 1 1 pH (sol. 5%) 8,0 – 10,5 8,0 – 10,5 8,0 – 10,5 8,0 – 10,5 8,0 – 10,5 8,0 – 10,5 8,0 – 10,5 Max. Loss on Ignition 2 2 2 2 2 2 2 Filtration rate (seg) 30 - 45 30 - 45 45 - 60 65 - 90 90 - 120 180 – 240 270 – 360
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TYPE SiO2 Min. (%) 89 Al2O3 Max. (%) 7 Fe2O3 Max. (%) 3 MgO Max. (%) 2 Na2O Max. (%) 0,5 K2O Max. (%) 0,5 CaO Max.(%) 0,5