Organic fertilizer having humic properties its method of production and its use

US6695892B1 · kind B1 · utility

Assignee

• Novihum GmbH · DE

Inventors

• Klaus Fischer · Speyer, DE
• Rainer Schiene · Rabenau, DE
• Joachim Katzur

Key dates

• Filing date: Mar 22, 2002
• Grant date: Feb 24, 2004
• Expiry date: Mar 22, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C05F11/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention concerns a method for the production of an organic fertilizer of humic-like nature, by oxidising and ammoniating treatment of lignite, characterised by the fact that lignite is suspended in a aqueous ammoniacal medium of pH>9 to 12 and in this context is partially dissolved and is oxidised at a temperature of 20-100° C. at normal pressure; and the organic fertilizer being obtained as a dispersion in aqueous medium, by thickening, or by drying, with a C/N ratio from 9 to 15. An organic fertilizer as well as its use is described. The process enables the production of an organic fertilizer from lignite distinguished by a humus-like structure and slow-releasing fertilization effect, and its use as such or as an addition to yield-increasing and soil-ameliorating substrates.