Paul Robert Kucera

US Patent:

20120285211, Nov 15, 2012

Filed:

Mar 26, 2012

Appl. No.:

13/430157

Inventors:

Paul Kucera - Valrico FL, US
W. Gregory Sawyer - Gainesville FL, US

International Classification:

C05B 15/00
C05G 1/00

US Classification:

71 12, 71 23, 71 18, 71 24

Abstract:

Fertilizer granules and methods of producing fertilizer granules. The fertilizer granules are formed from a fertilizer composition, such as a phosphate fertilizer, includes a fibrous material for the purpose of increasing the granule strength preventing or reducing attrition or dusting formation during storage, transport, and/or handling of the fertilizer. Dust formation can be reduced fifty percent or more. The base fertilizer composition can include a phosphate fertilizer, such as monoammonium phosphate (MAP) or diammonium phosphate (DAP), and optionally one or more micronutrients or secondary nutrients, such as elemental sulfur. The fibrous material is pulp or paper sludge, for example.

US Patent:

20130264285, Oct 10, 2013

Filed:

Aug 13, 2010

Appl. No.:

13/816860

Inventors:

Peter Douglas Macintosh - Peppermint Grove, AU
Luke Andrew Reeves - Scarborough, AU
Mark Alistair Peacock - Gwelup, AU
Neil Wende - Coolbinia, AU
Paul Robert Kucera - Valrico FL, US
Colin George Weyrauch - Brandon FL, US

Assignee:

HATCH LTD. - Mississauga ON

International Classification:

C02F 9/00

US Classification:

210636, 210652, 210651, 210259, 2101952, 210202

Abstract:

Process and facility for treating an aqueous solution containing substantial concentrations of a variety of contaminants, including solids, semi-solids, colloids, complexes, oligomers, polyvalents, organics and monovalents, and which tend to form gels and scale precipitates when their concentration levels are increased during treatment of the aqueous solution, the process comprising the steps of: a) feeding the aqueous solution to an ultrafiltration (UF) plant and recovering therefrom an UF permeate reduced in such suspended solids, semi-solids and colloids; b) feeding the UF permeate obtained from step (a) to a nanofiltration (NF) plant and recovering therefrom an NF permeate reduced in such complexes, oligomers, polyvalents and organics; and feeding the NF permeate obtained from step (b) to a first reverse osmosis (RO) plant and recovering therefrom an RO permeate reduced in such monovalents. The process and facility may be used for treating process water from wet process phosphate acid production.