| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention refers to production method of complex fertiliser containing nitrogen, calcium and sulphur, and application thereof in chemical industry. Substance of method consists in preparation of aqueous pulp of humidity 5/15 wt %, containing ammonia nitrate and sulphate and calcium salts, and granulation thereof in granulating drum. Granulation includes pulp mixed ammonium nitrate solution and ammonium sulphate in mass ratio NH4NO3:(NH4)2SO4, equal to (2.7/4.8):1. Prepared mixed pulp is steamed and added with calciumcarbonate-containing reagent in mass ratio CaCO3:(NH4)2SO4 equal to (0.6/0.9):1. ^ EFFECT: production of fertiliser meeting current requirements of particle-size distribution with base grain size 2/5 mm. ^ 4 cl, 1 ex |
