Title:
METHOD FOR PRODUCING CALCIUM NITRATE GRANULES
Document Type and Number:
WIPO Patent Application WO2001083374
Kind Code:
A3
Abstract:
This invention relates to a method for producing calcium nitrate granules. A calcium nitrate melt is sprayed into a re-circulating bed of a first fluidised bed granulator, wherein the re-circulating bed is supplied with air that has been conditioned and heated to a temperature of between 60 DEG C and 100 DEG C. Calcium nitrate granules formed in the granulator are introduced to a primary cooler in the form of a second fluidised bed where the granules are cooled to from 50 DEG C to 60 DEG C by conditioned air. The granules are sorted in a sorter and then cooled in a secondary cooler to a temperature of less than 40 DEG C, before being bagged. The granules so produced are hard and dry and do not break down easily during handling.
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Inventors:
RABIE DIRK RENIER HENDRIK (ZA)
MORRIS WILFRED ROY (ZA)
EYGELAAR JOHANNES PETRUS GYSBE (ZA)
MORRIS WILFRED ROY (ZA)
EYGELAAR JOHANNES PETRUS GYSBE (ZA)
Application Number:
PCT/IB2001/000732
Publication Date:
May 30, 2002
Filing Date:
May 02, 2001
Export Citation:
Assignee:
OMNIA FERTILIZER LTD (ZA)
RABIE DIRK RENIER HENDRIK (ZA)
MORRIS WILFRED ROY (ZA)
EYGELAAR JOHANNES PETRUS GYSBE (ZA)
RABIE DIRK RENIER HENDRIK (ZA)
MORRIS WILFRED ROY (ZA)
EYGELAAR JOHANNES PETRUS GYSBE (ZA)
International Classes:
B01J2/16; C01C1/18; C01F11/36; C01F11/44; C05C5/00; C05C5/04; C05G5/00; C06B31/02; C01F; (IPC1-7): C01F11/44; C05C5/00
Foreign References:
| FR764440A | 1934-05-22 | |||
| GB510053A | 1939-07-26 | |||
| US5326432A | 1994-07-05 | |||
| GB249370A | 1926-03-25 | |||
| GB380007A | 1932-09-08 |
Other References:
DATABASE CA [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; GLADUSHKO, V. I. ET AL: "Evaporation of solutions and granulation of calcium nitrate in a fluidized bed", XP002186899, retrieved from STN Database accession no. 66:96971 CA
Glatt Firmenschrift: "Anlage für das kontinuierliche Granulieren und Trocknen", february 1992
Glatt Firmenschrift: "Anlage für das kontinuierliche Granulieren und Trocknen", february 1992
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