Urea GSSP IS complex NP fertilizer, with a composition of 5:12:0:10, promises to revolutionize agricultural by providing essential nutrients such as N, P2O5, calcium, and sulfur.
PROCESS FOR THE PREPARATION OF UREA Granulated SUPERPHOSPHATE FERTILIZERS
Field of the Process
This process relates to an improved process for the preparation of Granulated urea superphosphate fertilizer (USP), which process comprises only two stage.
Background of the Process
Urea superphosphate is made from urea, which is a cheap source of nitrogen, and from phosphate rock as a cheap source of P2O5. The powder or granules of urea superphosphate can be used as fertilizer. The urea superphosphate can also be granulated with other fertilizers, such as KC1, K2SO4, MAP or DAP (monoammonium or diammonium phosphate), to obtain the desired NPK (nitrogen-phosphorus-potassium) compounds.
One of the advantages of the present process is the production of urea superphosphate that in bulk blending is compatible with fertilizers such as urea and triple superphosphate.
Method of making phospho-nitrogenous products in two stages: first, preparing a solution of Urea with other materials, and secondly, feeding the same with SSP granulation. The reaction between said reagent is exothermic, which makes the product free of excess urea. First stage of this process – preparation of the reagent – besides requiring controlling conditions. Second stage is feeding to granulator & controlling the ratio.
It is another purpose of this process to provide a single-stage process for the preparation of urea superphosphate.The following examples relate to the production of USP granules with the composition 05-12-0-10 (05% N, 12% P2O5 and 10% S), but this should not be construed as a limitation, since USP can be produced, according to the process, with different compositions. Urea superphosphate (hereinafter USP), produced according to the process, can be granulated or bulk-blended or granulated with other fertilizers.
It is a further purpose of this process to produce urea superphosphate that is compatible with fertilizers, such as urea and triple superphosphate (SSP/TSP).
(Complete process chemistry is available)
Enhanced Nutrient Uptake Efficiency: Urea Super Phosphate (USP) is poised to improve nitrogen uptake efficiency, thereby reducing the need for additional fertilizer applications for nitrogen. This not only streamlines the farming process but also alleviates the cost burden for farmers, making it an economically viable solution. Better replacement of DAP.
PROCESS DESCRIPTION FOR Urea GSSP
Urea Granulated Single Super Phosphate (USSP) is manufactured by feeding SSP powder to the granulation plant. In the rotating Granulator drum the powder SSP is mixed with water up to 12%, which results formation of granule from powder.
The granules than discharged to the dryer drum for drying by heating up to 600 deg.temperature. The final moisture content in the granules is about 5%.
The material comes from dryer are cooled in cooler drum. After cooling of the granules, granules are sending to the vibrating screened for desired mesh.
There are two types of vibrating screens are used.
- Undersize vibrating screen.
In under size vibrating screen the undersize is -1 MM. The oversize material of this screen is send to the next screen. And undersize material is recycled to the granulator drum.
- Oversize vibrating screen.
In the oversize vibrating screen the material size of undersize that is our product size is +1 -4 MM. The oversize material retained on this screen is send to the crusher, where the crushing takes place and recycled to the granulator drum. The oversize material is packed in 50 kg HDPE bags for sale as GSSP.
In the granulation process the USSP dust evolved. This dust is scrubbed with the help of twin cyclone system through blower provided for dryer drum and air is discharged from 30 meters height chimney.
Granulated form of the Urea Single Super Phosphate fertilizer is more efficient as unlike the powder it doesn’t gets dissolved easily and doesn’t gets washed away, thus stays in the soil and fetches more benefits to crops as well. Constituents of Granulated SSP Plants are same as that of SSP only the form is different.
GSSP Computrised Snapshot
