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Method of producing gypsum binder
A method of producing a gypsum binder, the method including dehydrating of gypsum raw material lumps by heating in a gaseous medium with further drying, cooling, and milling stages, wherein the heating gypsum raw material lumps is performed either by: (i) placing the lumps in a heating medium set to a temperature exceeding the temperature under which dehydration and formation of gypsum α-hemihydrate occurs; and/or (ii) placing the lumps in a heating medium having a high rate of temperature increase such that a temperature higher than the temperature under which dehydration and formation of gypsum α-hemihydrate occurs is reached; wherein a heating time is selected sufficient for completion of the process of gypsum α-modification formation within the gypsum lumps, and wherein the heating is performed under atmospheric pressure through lump surface.
Method of producing gypsum binder
A method of producing a gypsum binder, the method including dehydrating of gypsum raw material lumps by heating in a gaseous medium with further drying, cooling, and milling stages, wherein the heating gypsum raw material lumps is performed either by: (i) placing the lumps in a heating medium set to a temperature exceeding the temperature under which dehydration and formation of gypsum α-hemihydrate occurs; and/or (ii) placing the lumps in a heating medium having a high rate of temperature increase such that a temperature higher than the temperature under which dehydration and formation of gypsum α-hemihydrate occurs is reached; wherein a heating time is selected sufficient for completion of the process of gypsum α-modification formation within the gypsum lumps, and wherein the heating is performed under atmospheric pressure through lump surface.
Method of producing gypsum binder
KORNIENKO IGOR IVANOVICH (author) / STAVRULOV IGOR ANATOLIEVICH (author)
2018-03-27
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME