Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing high-activity lime by calcining limestone chips with circulating fluidized bed
The invention relates to the field of lime preparation and particularly relates to a method for preparing a high-activity lime by calcining limestone chips with a circulating fluidized bed. The limestone chips with the granularity of less than 10 mm can be sufficiently and effectively utilized and processed into the high-activity limes by the circulating fluidized bed. The method comprises the following steps: a, sieving the limestone chips into the crude granules, the fine granules and the fine powders, and respectively and correspondingly putting the crude granules, the fine granules and the fine powders into a dense-phase zone, a suspension section and a high temperature cyclone separator of the circulating fluidized bed to be calcined, wherein the granularity of the crude granules is 1.5mm and the mass portion on the sieve is more than 70%, the granularity of the fine powders is 0.3mm and the mass portion on the sieve is more than 80%, the granularity of more than 70% of the fine granules is 0.3-1.5mm; and b, maintaining the hearth outlet temperature of the circulating fluidized bed to 850-950 DEG C and the smoke outlet temperature of the high temperature cyclone separator to 700-750 DEG C.
Method for preparing high-activity lime by calcining limestone chips with circulating fluidized bed
The invention relates to the field of lime preparation and particularly relates to a method for preparing a high-activity lime by calcining limestone chips with a circulating fluidized bed. The limestone chips with the granularity of less than 10 mm can be sufficiently and effectively utilized and processed into the high-activity limes by the circulating fluidized bed. The method comprises the following steps: a, sieving the limestone chips into the crude granules, the fine granules and the fine powders, and respectively and correspondingly putting the crude granules, the fine granules and the fine powders into a dense-phase zone, a suspension section and a high temperature cyclone separator of the circulating fluidized bed to be calcined, wherein the granularity of the crude granules is 1.5mm and the mass portion on the sieve is more than 70%, the granularity of the fine powders is 0.3mm and the mass portion on the sieve is more than 80%, the granularity of more than 70% of the fine granules is 0.3-1.5mm; and b, maintaining the hearth outlet temperature of the circulating fluidized bed to 850-950 DEG C and the smoke outlet temperature of the high temperature cyclone separator to 700-750 DEG C.
Method for preparing high-activity lime by calcining limestone chips with circulating fluidized bed
YANG LIANMING (Autor:in)
27.05.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
Fluidized limestone powder suspension calcining equipment
| Europäisches Patentamt | 2023
Crushing processing system of limestone for calcining in lime kiln
| Europäisches Patentamt | 2022
Limestone calcining production equipment and calcining process thereof
| Europäisches Patentamt | 2024