Particulate fertilizer dust control
AssigneeGeorgia-Pacific Corporation
InventorScott Hazlett
Life of this patent
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Abstract
A composition comprising lignosulfonate, sugar and optionally urea useful in preventing the formation of dust and caking of granular fertilizer particles. The composition has a lower viscosity at room temperature, is more effective in preventing dust and caking than lignosulfonate, urea, or sugar alone or mixtures of lignosulfonate and sugar, and mixtures of lignosulfonate and urea. The composition is preferably sprayed on the fertilizer after granulation, or when blending of the fertilizer particles is completed.
Claims14
A composition for reducing fugitive dust in solid particulate fertilizers consisting essentially of an aqueous solution of a mixture of lignosulfonate, sugar, and urea wherein the lignosulfonate is within the range of about 10% to about 40% by weight of total solids in the composition, wherein the sugar is within the range of about 10% to about 80% by weight of total solids of the composition and wherein the urea is within the range of about 10% to about 50% by weight of total solids of the composition.
A method of preventing dust formation and caking in a particulate fertilizer which comprises treating said particulate fertilizer with a composition consisting essentially of an aqueous solution of a mixture of lignosulfonate, sugar, and urea wherein the lignosulfonate is within the range of 10% to about 40% by weight of total solids of the composition, wherein the sugar is within the range of 10% to about 80% by weight of total solids of the composition and wherein the urea is within the range of 10% to about 50% by weight of total solids of the composition.
Dependencies are inferred from the claim text.