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Additive 'A'

Alternate Names: Additive A, Additive


The manufacturer claims: "Lignin products have lubricating, binding and anti-scumming properties in ceramics. They provide benefits to stiff mud and soft mud face bricks, engineering bricks, refractories, sewer tiles, roof tiles, ramming and gunning mixes, terracotta ware, whiteware and throwing bodies.

Improved clay workability
Reduced need for die lubrication
Increased extrusion rate
Increased life of wearing parts
Increased green strength
Reduced free water
Faster drying rates
Reduced energy consumption
Flexibility to use less plastic clays".

Related Information

Calcium lignosulfonate used as a glue to hold ball clay bags on a pallet

Some companies (e.g. Old Hickory Clay) use this as an alternative to shrink-wrapping every pallet of bagged materials (for environmental reasons for example). This wood derivative material is very sticky and behaves like a glue. However it redissolves quickly when whetted. Dark hard particles of this glue can be a concern in batching operations where they fall into the mix. However in a pugmill the particles dissolve during movement through the barrel and are not visible in the extruded product.


Oxide Analysis Formula
Organization of Lignin producers
Typecodes Additive
Materials that are added to bodies and glazes to impart physical working properties and usually burn away during firing.
Articles Binders for Ceramic Bodies
An overview of the major types of organic and inorganic binders used in various different ceramic industries.

By Tony Hansen

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