Patent ID: 6572833
Filing Date: 2003-06-03
Classification: C01C,C06B

Abstract:
A process for the production of ammonium nitrate bodies in particulate form wherein an ammonium nitrate/water liquid mixture containing at least 92% by weight ammonium nitrate, optionally with a proportion of the ammonium nitrate substituted by alkali- and/or alkaline earth metal nitrate, and a small amount of poly-styrene sulphonate crystal-habit modifier is sprayed as droplets in to an atmosphere in which cooling effects crystallisation of the ammonium nitrate and in which the crystallised particles are dried to remove moisture characterised in that the liquid mixture also contains ammonium sulphate, the concentration of poly-styrene sulphonate in the liquid mixture is at least 0.01% by weight, and the concentration of ammonium sulphate in the liquid mixture is greater than that of the poly-styrene sulphonate and is at least 0.04% by weight.