Assertion: molten ammonium nitrate | /r/CapableOf | pass prill
Facets:
value: through a predrying zone
type: TRANSITIVE-OBJECT
value: at a temperature in the range
type: LOCATION
Source sentences:
text: In the production of ammonium nitrate prills wherein molten ammonium nitrate, containing about 5 weight percent water, is sprayed into the top of a prilling tower countercurrent to a flow of cooling gas the improvement which comprises collecting the prills at the bottom of the prilling tower at a temperature in the range 70 to 100 C.; passing the prills at a temperature in the range 60 to C. through a predrying zone; passing air through said predrying zone, said air having a relative humidity of 70 to 90 percent at 35 to 38 C. and a temperature suiiicient to raise the temperature of the prills from about 1 C. to about 5 C.; passing said prills through a `drying zone; passing air through said drying zone, said air having a relative humidity of less than 60 percent at 35 to 38 C. and a temperature suiiicient to raise the temperature of the prills from about 1 C. to about 5 C.; passing said prills through a cooling zone; passing air through said cooling zone; said air having a relative humidity of less than 60 percent at the entrance temperature and at a temperature sufficient to lower the temperature of the prills to about 45-50 C.; and recovering resulting dried prills.
text: In the production of ammonium nitrate prills wherein molten ammonium nitrate, containing about 3 to 6 weight percent water, is sprayed into the top of a prilling tower countercurrent to a flow of cooling gas, the improvement which comprises collecting the prills at the bottom of the prilling tower at a temperature in the range of about 70 to 100 C.; passing the prills at a temperature in the range of 60 to 90 C. through a pre-drying zone; passing air through said pre-drying zone, said air having a relatively humidity of 70 to 90 percent at 35 to 38 C. and a temperature sufficient to raise the temperature of the prills from about 1 C. to about 15 C.; passing said prills through Va drying zone; passing air throughl said drying zone, said air.