Process for preparing urine-base compound fertilizer by fusing urea (urine) and spray granulating

Application Number: 00102903
Application Date: 2000.03.09
Publication Number: 1264691
Publication Date: 2000.08.30
Priority Information:
International: C05G1/00;C05G5/00
Applicant(s) Name: Wang Changshan
Inventor(s) Name: Wang Changshan
Patent Agency Code: 00000
Patent Agent:
Abstract A process for preparing urea-base composite fertilizer UAPK or UNPK includes preparing molten urea liquid from granular urea, potassium salt and water or industrial urea, adding potassium salt, pressurizing onto liquid surface or pumping, atomizing by spiral nozzle, sparing onto the powder of ammonium phosphate, ordinary calcium, heavy calcium,Ca-Mg-P fertilizer and potassium salt, graulating, low-temp drying and cooling. The obtained fertilizer has 1-4.75 mm of granularity and 25-45% of total NPK contents.