Clinker and white portland cement with a high sulfur content derived from a high sulfur content pet-coke used as fuel

A white portland cement clinker, with the capacity to fix sulfur derived from an organic fuel having a high sulfur content, greater than 5% S, used as a fuel in the calcination of said clinker, said clinker additionally exhibiting reduced fuel consumption during such calcination and useful for producing a fast setting cement, and comprising amounts of clinker phases in percentage by weight, as follows:

• 3CaO.SiO2 (C3S):
• 40 to 75,
• 2CaO.SiO2 (C2S):
• 10 to 35,
• 3CaO.Al2O3 (C3A):
• 0 to 15,
• CaO.SO3 (C{hacek over (S)}):
• 0 to 10,
• 4CaO.3Al2O3.SO3 (C4A3{hacek over (S)}):
• 2 to 15,
• 11CaO.7Al2O3.CaF2 (C11A7.CaF2):
• 0 to 5,
• Total % CaF2:
• 0.3 to 1.5 measured as CaF2,
• % Fe2O3:
• 0 to 0.5,
• and a SO3 content between 1.5 and 5% by weight obtained through the calcination of a raw meal comprising CaO, SiO2, Al2O3 and CaF2, and using an organic fuel with a sulfur content higher than 5% as the main source of the clinker's SO3 content, at temperatures between 2192° F. and 2462° F. without the addition of any SO3-containing additive to the raw meal as a main source of SO3 content in the clinker.