Sodium Silicate → Sodium orthosilicate

HRID 2186651Notes

Reaction equation

S([O-])([O-])(=O)=[O:2].[Na+:6].[Na+].[O-:8][Si:9]([O-:11])=[O:10].[Na+].[Na+]>>[Si:9]([O-:2])([O-:11])([O-:8])[O-:10].[Na+:6].[Na+:6].[Na+:6].[Na+:6]

Participants

Reactant 2

HCID 23266Sodium Silicate

HCID 24436Sodium Sulfate

Product 1

HCID 26051Sodium orthosilicate

Procedure

1138 g of anhydrous sodium sulfate are dissolved in 50 kg of water glass having the composition as in Example 1, and the solution is spray-dried in a laboratory spray dryer (spray tower) from Anhydro to give an amorphous sodium silicate having an active substance content of about 83%. 15 kg of the amorphous sodium silicate are heat-treated at 720° C. for 90 min in a muffle furnace (Nabertherm, model W1000/H). The chilled product (about 10 kg) is pulverized using a jaw crusher and a disk mill.

Workup

customthe solution is spray-dried in a laboratory spray dryer (spray tower) from Anhydro

Sources & evidence

ORD record: ord-f0eaf0e0a49e48d6969b3b9b09277fb9
Source dataset: uspto-grants-2002_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06407055B1

Reaction notes

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