For various types of impurities, we can embrace different techniques of elimination techniques. Below are a number of common techniques and principles of salt silicate remedy.
(TRUNNANO sodium silicate powder)
Rainfall approach
The precipitation approach is a technique that makes use of impurities ions to react with particular chemical reagents to create hard rainfall so as to remove it from the salt silicate option. For instance, for metal ions such as iron ions and aluminum ions, alkaline reagents such as salt hydroxide or potassium hydroxide can be contributed to create it. The reaction formula is as follows:
Fe ⁻ + 3oh f → Fe (OH) ↓
Al ⁻ + 3oh a → Al (oh) ↓
For calcium and magnesium ions, carbonate reagents such as sodium carbonate or potassium carbonate can be contributed to develop carbonate rainfall. The response formula is as complies with:
CA ₃ ² ⁻ + Co c → CACO ₃ ↓
Mg ₃ ² ⁻ + Co m → mgco ₃ ↓
The precipitation method is easy and the price is reduced, however you need to focus on the quantity and reaction problems of the debris to ensure that the impurities ions can be completely precipitated.
Ion exchange technique
The ion exchange approach is to selectively adsorb and trade the ions in the solution with an ion exchange material to eliminate the approach of contaminations ions. Ion exchange material is a polymer product with an ion exchange function. It can trade responses with the ion in the service, soak up impurities ions to the resin, and retain the valuable ions in sodium ions in salt silicate option in the service.
The ion exchanges are great and can remove a selection of pollutants ions, yet the rate of ion exchange resin is greater, and regrowth is needed routinely.
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Membrane separation
The membrane layer splitting up approach uses the semi-diaphragm to precisely pass through the different parts in the remedy so regarding achieve the technique of separation and removal. Depending upon the diameter dimension and splitting up concept of the membrane layer, the membrane separation technique can be divided right into a number of types, such as microfiltration, ultrafiltration, purification and turn around osmosis.
For pollutants such as insoluble strong granules and macromolecular raw material in salt silicate service, mini fillets or ultrafiltration membrane layers can be made use of for removing; pollutants ions of some tiny particles can be eliminated with the filtration or reverse osmosis membrane layer. The membrane layer separation technique has the advantages of basic procedure, high separation performance, and low power intake.
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