Agglomerated particulate lignosulfonate
AssigneeLignoTech USA, Inc.
InventorKåre Reknes
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Abstract
An agglomerated particulate lignosulfonate material may be 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 lignosulfonate granules having an average size of at least 0.1 mm.
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.
A cement additive comprising a mixture of cement powder and non-comminuted lignosulfonate granules having an average size of at least 0.1 mm.
A concrete mixture or oil well cement comprising a blend of cement, water, non-comminuted lignosulfonate granules having an average size of at least 0.1 mm and optional aggregate or proppant.
Dependencies are inferred from the claim text.