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A platform for research: civil engineering, architecture and urbanism
Ultrafine active CaO production process
The invention discloses an ultrafine active CaO production process, relates to the field of calcium oxide production, aims to solve the problem that the content of overfired lime and underfired lime in existing quick lime is too high, and is technically characterized by comprising the following steps: preparing raw materials; pre-treating the raw materials, wherein limestone and high-temperature aluminum oxide ceramic are ground, the final particle size ratio of the limestone to the high-temperature aluminum oxide ceramic is 1: (4.6-6.9), then the ground limestone and high-temperature aluminumoxide ceramic are subjected to dry mixing for 30 +/-3 min at the rotating speed of 50 +/-5 r/min, and a premix is obtained; preheating and calcining; cooling; screening and purifying: screening the cooled premix with quick lime and high-temperature aluminum oxide ceramic, and taking an upper-layer quick lime screen material; carrying out secondary screening on the lower-layer high-temperature aluminum oxide ceramic sieved material, intercepting the high-temperature aluminum oxide ceramic, and taking the lower-layer quicklime powder sieved material; performing abrasive machining. In the production process, limestone is uniformly heated, and formation of underfire lime and overfire lime is effectively reduced.
本发明公开了一种超细活性CaO生产工艺，其涉及氧化钙生产领域，旨在解决现有生石灰中过火石灰和欠火石灰含量过高的问题，其技术要点包括以下步骤：原料准备；原料预处理：对石灰石和高温氧化铝陶瓷进行研磨，石灰石和高温氧化铝陶瓷的最终粒径比为1：（4.6‑6.9），然后将研磨后的石灰石和高温氧化铝陶瓷在50±5转/分钟的转速下干混30±3min，得到预混料；预热煅烧；冷却；筛分提纯：对冷却后的预混料进行生石灰和高温氧化铝陶瓷的筛分，取上层生石灰筛料；对下层高温氧化铝陶瓷筛料进行二次筛分，高温氧化铝陶瓷被截留，取下层生石灰粉筛料；研磨加工。本发明在生产过程中，石灰石均匀受热，有效减少欠火石灰和过火石灰的形成。
Ultrafine active CaO production process
The invention discloses an ultrafine active CaO production process, relates to the field of calcium oxide production, aims to solve the problem that the content of overfired lime and underfired lime in existing quick lime is too high, and is technically characterized by comprising the following steps: preparing raw materials; pre-treating the raw materials, wherein limestone and high-temperature aluminum oxide ceramic are ground, the final particle size ratio of the limestone to the high-temperature aluminum oxide ceramic is 1: (4.6-6.9), then the ground limestone and high-temperature aluminumoxide ceramic are subjected to dry mixing for 30 +/-3 min at the rotating speed of 50 +/-5 r/min, and a premix is obtained; preheating and calcining; cooling; screening and purifying: screening the cooled premix with quick lime and high-temperature aluminum oxide ceramic, and taking an upper-layer quick lime screen material; carrying out secondary screening on the lower-layer high-temperature aluminum oxide ceramic sieved material, intercepting the high-temperature aluminum oxide ceramic, and taking the lower-layer quicklime powder sieved material; performing abrasive machining. In the production process, limestone is uniformly heated, and formation of underfire lime and overfire lime is effectively reduced.
本发明公开了一种超细活性CaO生产工艺，其涉及氧化钙生产领域，旨在解决现有生石灰中过火石灰和欠火石灰含量过高的问题，其技术要点包括以下步骤：原料准备；原料预处理：对石灰石和高温氧化铝陶瓷进行研磨，石灰石和高温氧化铝陶瓷的最终粒径比为1：（4.6‑6.9），然后将研磨后的石灰石和高温氧化铝陶瓷在50±5转/分钟的转速下干混30±3min，得到预混料；预热煅烧；冷却；筛分提纯：对冷却后的预混料进行生石灰和高温氧化铝陶瓷的筛分，取上层生石灰筛料；对下层高温氧化铝陶瓷筛料进行二次筛分，高温氧化铝陶瓷被截留，取下层生石灰粉筛料；研磨加工。本发明在生产过程中，石灰石均匀受热，有效减少欠火石灰和过火石灰的形成。
Ultrafine active CaO production process
超细活性CaO生产工艺
HE JIAPING (author) / WU XUEHONG (author) / XIE BINJIN (author)
2020-08-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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