Flocculate, flocculation, flocculant

The opposite of deflocculation. The process of making a ceramic glaze or clay slurry that would otherwise be thin and liquid into a gel. This is typically done to improve suspension properties or allow application of slips and glazes without problems of running and dripping. However flocculated slips have a high water content and thus a higher shrinkage. Common flocculants are calcium chloride, vinegar, epsom salts.
Glazes can change their viscosity with storage, when they thicken they are said to 'flocculate'. In these cases slightly soluble materials in the mix (e.g. nepheline syenite) can act to change the viscosity of the slurry.

In Bound Links

• (Glossary) Deflocculate, deflocculation, deflocculant

  The process of making a clay slurry that would oth...

• (Glossary) Thixotropy

  Thixotropy refers to the way a slurry's viscosity ...

• (Glossary) Rheology

  Rheology refers to the array of characteristics th...

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