Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a lime kiln calcining process for active calcium oxide production, belonging to the field of calcium oxide production. The invention aims to solve the problems that limestone is heated unevenly and is prone to generating underfire lime and overfire lime in the calcining process of limestone with an existing lime kiln. The lime kiln calcining process comprises the followingsteps: pretreatment of limestone; preheating in a preheating zone, wherein a preheating temperature is in a range of 960 to 1000 DEG C, limestone particles are preheated in the preheating zone in a layered manner, and total preheating time is 46 +/- 5 min; calcining in a calcining zone, wherein a calcining temperature is in a range of 1150 to 1200 DEG C, and the limestone particles are calcined inthe calcining zone in a layered manner for 18 +/- 2 minutes; cooling in a cooling area, wherein a discharging temperature is in a range of 90 to 100 DEG C, and the limestone particles are cooled in the cooling area in a layered manner; and blanking. According to the invention, the step of preheating in the preheating zone, the step of calcining in the calcining zone, the step of cooling in the cooling zone and the step of blanking are carried out in a specially-made lime kiln. According to the invention, the specially-made lime kiln is utilized, so limestone is heated more uniformly, and theformation of underfire lime and overfire lime is reduced.
本发明公开了一种用于活性氧化钙生产的石灰窑煅烧工艺，其涉及氧化钙生产领域，旨在解决现有的石灰窑对石灰石煅烧过程中，石灰石受热不均，易生成欠火石灰和过火石灰的问题，煅烧工艺包括以下步骤：石料预处理；预热区预热：预热温度为960‑1000℃，石灰石颗粒在预热区中分层预热，预热总时间为46±5min；煅烧区煅烧：煅烧温度为1150‑1200℃，石灰石颗粒在煅烧区中分层煅烧，煅烧总时间为18±2min；冷却区冷却：出料温度为90‑100℃，石灰石颗粒冷却区区中分层冷却区；下料；预热区预热步骤、所述煅烧区煅烧步骤、所述冷却区冷却步骤和所述下料步骤在特制石灰窑中进行。本发明利用特制的石灰窑，使得石灰石受热更为均匀，减少了欠火石灰和过火石灰的形成。
The invention discloses a lime kiln calcining process for active calcium oxide production, belonging to the field of calcium oxide production. The invention aims to solve the problems that limestone is heated unevenly and is prone to generating underfire lime and overfire lime in the calcining process of limestone with an existing lime kiln. The lime kiln calcining process comprises the followingsteps: pretreatment of limestone; preheating in a preheating zone, wherein a preheating temperature is in a range of 960 to 1000 DEG C, limestone particles are preheated in the preheating zone in a layered manner, and total preheating time is 46 +/- 5 min; calcining in a calcining zone, wherein a calcining temperature is in a range of 1150 to 1200 DEG C, and the limestone particles are calcined inthe calcining zone in a layered manner for 18 +/- 2 minutes; cooling in a cooling area, wherein a discharging temperature is in a range of 90 to 100 DEG C, and the limestone particles are cooled in the cooling area in a layered manner; and blanking. According to the invention, the step of preheating in the preheating zone, the step of calcining in the calcining zone, the step of cooling in the cooling zone and the step of blanking are carried out in a specially-made lime kiln. According to the invention, the specially-made lime kiln is utilized, so limestone is heated more uniformly, and theformation of underfire lime and overfire lime is reduced.
本发明公开了一种用于活性氧化钙生产的石灰窑煅烧工艺，其涉及氧化钙生产领域，旨在解决现有的石灰窑对石灰石煅烧过程中，石灰石受热不均，易生成欠火石灰和过火石灰的问题，煅烧工艺包括以下步骤：石料预处理；预热区预热：预热温度为960‑1000℃，石灰石颗粒在预热区中分层预热，预热总时间为46±5min；煅烧区煅烧：煅烧温度为1150‑1200℃，石灰石颗粒在煅烧区中分层煅烧，煅烧总时间为18±2min；冷却区冷却：出料温度为90‑100℃，石灰石颗粒冷却区区中分层冷却区；下料；预热区预热步骤、所述煅烧区煅烧步骤、所述冷却区冷却步骤和所述下料步骤在特制石灰窑中进行。本发明利用特制的石灰窑，使得石灰石受热更为均匀，减少了欠火石灰和过火石灰的形成。
Lime kiln calcining process for active calcium oxide production
用于活性氧化钙生产的石灰窑煅烧工艺
28.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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