Patents Assigned to Terni Industrie Chimiche S.p.A.
  • Process for producing calcium nitrate-urea adduct
    Patent number: 5716591
    Abstract: Calcium nitrate-urea adduct, a product having the formula ?Ca(NO.sub.3).sub.2.4CO(NH.sub.2).sub.2 !, is obtained by means of a process which basically consists of the following steps:mixing molten urea and calcium nitrate;feeding the resulting solution to a turbodryer;feeding the resulting molten salt to a granulator drum;recovery of calcium nitrate-urea adduct.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: February 10, 1998
    Assignee: Nuova Terni Industrie Chimiche S.p.A.
    Inventor: Antonio Crispoldi
  • Calcium and magnesium based nitrogen fertilizer, process and eqiupment for its production
    Patent number: 5435823
    Abstract: A fertilizer containing Ca, Mg and NH.sub.4 4, having a water content ranging between 15% and 35% in weight and a melting point ranging between 50 and 65 degrees C is prepared by etching of dolomite and/or limestone with nitric acid, neutralization, concentration and granulation (FIG. 1).
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: July 25, 1995
    Assignee: Terni Industrie Chimiche S.p.A.
    Inventor: Antonio Crispoldi