Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB705457A
Inventor
Bernard Raistrick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scottish Agricultural Industries Ltd
Original Assignee
Scottish Agricultural Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scottish Agricultural Industries LtdfiledCriticalScottish Agricultural Industries Ltd
Priority to GB705457ApriorityCriticalpatent/GB822653A/en
Publication of GB822653ApublicationCriticalpatent/GB822653A/en
C05B19/00—Granulation or pelletisation of phosphatic fertilisers, other than slag
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Fertilizers
(AREA)
Abstract
A mixed fertilizer containing ammonium phosphate is granulated by agitating a mixture of the ingredients in which the ammonium phosphate is present in the form of small granules which provide nuclei for the formation of mixed fertilizer granules. The ammonium phosphate granules are preferably of diameter 25-75% that of the fertilizer granules produced and may be in the range 1/4 -2\ba1/2 mm. suitably 1-1 1/2 mm. diameter, the other ingredients such as ammonium sulphate and potassium chloride being in finely divided form. The nuclei may be surrounded by an acidic matrix such as "ordinary" grade ammonium sulphate.