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Title:
PROCESS FOR MANUFACTURING A FERTILISER
Document Type and Number:
WIPO Patent Application WO2001068562
Kind Code:
A3
Abstract:
The invention relates to a process for converting a bioorganic material such as sewage sludge into a wet, organically enriched inorganic fertilzer mix that permits drying and pelletizing into a compact particle fertilizer form. The process provides for effective odour control as well as disinfection of the bioorganic material, which are essentially required in accordance with United States Environmental Protection Agency regulations in relation to land applications of bioorganic materials. The drying and pelletizing process through heating of the fertlizer mix also serves to provide a sterilized particle fertilizer as required by the above regulations for particular applications. The process also provides for chemical reactions to occur that result in the formation of fire retardants which serve to avoid fire hazards that could otherwise be associated with the drying and pelletizing process.

Inventors:
OLIVER MICHAEL JOHN BASIL (ZA)
CARSKY MILAN (ZA)
HART OLIVER O'CONNOR (ZA)
Application Number:
PCT/IB2001/000349
Publication Date:
April 11, 2002
Filing Date:
March 13, 2001
Export Citation:
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Assignee:
ENERGY ENGINEERING INTERNAT PT (ZA)
OLIVER MICHAEL JOHN BASIL (ZA)
CARSKY MILAN (ZA)
HART OLIVER O CONNOR (ZA)
International Classes:
C05F7/00; C05G1/00; F26B3/08; F26B3/084; F26B25/00; (IPC1-7): C05F7/00
Domestic Patent References:
WO1997030008A11997-08-21
WO1999057078A11999-11-11
WO1995012560A11995-05-11
WO1991016280A11991-10-31
Foreign References:
US5466273A1995-11-14
DE2820729A11979-11-15
EP0970933A22000-01-12
CH295403A1953-12-31
EP0428015A21991-05-22
US4743287A1988-05-10
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