09-05-2019 дата публикации
Номер: US20190135690A1
Принадлежит:
The invention provides a process for producing a cement clinker comprising: (i) mixing one or more starting materials providing each at least one or more of CaO, SiO, AIO, and FeO; and, optionally, SO, to form a raw meal comprising CaO, SiO, AIO, and FeO; and, optionally, SO, wherein the molar ratios among the aforementioned oxides is given by Formula I: S(CaO)(SiO)(AlO)(FeO)(SO), wherein: “a” is comprised from 0.05 to 1, “b” is comprised from 0.1 to 0.6, “c” is comprised from 0.001 to 0.25, and “d” is comprised from 0 to 0.3 and wherein at least 35% (p/p) of the starting materials of the raw meal have a critical microwaves absorbance temperature (Tc) comprised from 15 to 650° C. and a critical microwaves absorbance time (tc) comprised from 1 min to 1 h; (ii) heating the raw meal by irradiating with microwaves during 15 min to 3 h to reach a sintering temperature comprised from 300 to 950° C.; (iii) maintaining the microwave sintering temperature of step (ii) during 1 min to 3 h by further irradiating with microwaves; and (iv) cooling the clinker obtained in step (iii). 1. A process for producing a cement clinker comprising the steps of:{'sub': 2', '2', '3', '2', '3', '2', '3', '2', '3', '3, 'claim-text': {'br': None, 'sub': 1', '2', 'a', '2', '3', 'b', '2', '3', 'c', '3', 'd, '(CaO)(SiO)(AlO)(FeO)(SO)\u2003\u2003(Formula I)'}, '(i) mixing one or more starting materials providing each: at least one or more of CaO, SiO, AlO, and FeO; and, optionally, SO3; and/or at least other one or more compounds comprising the elements of these oxides, to form a raw meal comprising CaO, SiO, Al2O, and FeO; and, optionally, SO; and/or at least other one or more compounds comprising the elements of these oxides, wherein the molar ratios among the aforementioned oxides and/or other one or more compounds comprising the elements of these oxides is given by Formula Iwherein:“a” is comprised from 0.05 to 1,“b” is comprised from 0.1 to 0.6,“c” is comprised from 0.001 to 0.25, and“d” is ...
Подробнее