For different kinds of impurities, we can embrace various techniques of elimination methods. Here are a number of typical methods and principles of sodium silicate service.
(TRUNNANO sodium silicate powder)
Rainfall technique
The rainfall approach is a method that makes use of impurities ions to respond with specific chemical reagents to generate challenging rainfall so regarding remove it from the salt silicate option. For example, for steel ions such as iron ions and aluminum ions, alkaline reagents such as salt hydroxide or potassium hydroxide can be contributed to develop it. The response equation is as complies with:
Fe ⻠+ 3oh f → Fe (OH) ↓
Al ⻠+ 3oh a → Al (oh) ↓
For calcium and magnesium ions, carbonate reagents such as sodium carbonate or potassium carbonate can be included in form carbonate rainfall. The reaction equation is as follows:
CA ₃ ² ⻠+ Carbon monoxide c → CACO ₃ ↓
Mg ₃ ² ⻠+ Carbon monoxide m → mgco ₃ ↓
The rainfall approach is simple and the cost is reduced, yet you need to take notice of the amount and reaction problems of the debris to ensure that the impurities ions can be completely precipitated.
Ion exchange approach
The ion exchange technique is to precisely adsorb and trade the ions in the option with an ion exchange resin to get rid of the technique of pollutants ions. Ion exchange material is a polymer product with an ion exchange feature. It can exchange reactions with the ion in the option, absorb contaminations ions to the resin, and maintain the useful ions in sodium ions in sodium silicate solution in the service.
The ion exchanges are great and can get rid of a selection of impurities ions, yet the price of ion exchange material is greater, and regeneration is called for frequently.
(TRUNNANO sodium silicate powder)
Membrane separation
The membrane layer splitting up approach makes use of the semi-diaphragm to selectively travel through the different components in the option so as to accomplish the approach of splitting up and removal. Depending upon the diameter dimension and separation concept of the membrane layer, the membrane separation method can be separated right into a number of kinds, such as microfiltration, ultrafiltration, filtering and reverse osmosis.
For pollutants such as insoluble strong granules and macromolecular raw material in salt silicate solution, micro fillets or ultrafiltration membrane layers can be utilized for eliminating; impurities ions of some tiny particles can be eliminated with the filtering or turn around osmosis membrane. The membrane separation method has the benefits of straightforward procedure, high splitting up effectiveness, and reduced power consumption.
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