Agglomerated particulate lignosulfonate
AssigneeBorregaard Industries Limited
InventorKåre Reknes
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Abstract
An agglomerated particulate lignosulfonate material may he made by introducing or forming lignosulfonate microparticles in a fluidized bed agglomerator, and introducing sufficient heated gas and lignosulfonate liquid in the agglomerator to convert the microparticles to lignosulfonate granules of enlarged size. The granules may have an average size of at least 0.1 mm, and may be used to make a dry-blended cement additive or oil well cement that may be dustless, easily poured and stored, and rapidly dissolved in water.
Claims25
A method for making a particulate material, which method comprises:
- a) introducing or forming lignosulfonate microparticles in a fluidized bed agglomerator;
- b) introducing heated gas and lignosulfonate liquid in the agglomerator;
- and
- c) enlarging the microparticles to form lignosulfonate granules.
Particulate material comprising non-comminuted water-soluble granules having an average size of at least 0.1 mm and consisting essentially of lignosulfonate.
A method for making a cement additive comprising dry-blending cement powder with non-comminuted lignosulfonate granules having an average size of at least 0.1 mm.
20-25. (canceled)
Dependencies are inferred from the claim text.