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Method for preparing high-activity lime through powdery limestone suspension flow dynamic calcination
The invention discloses a method for preparing high-activity lime through powdery limestone suspension flow dynamic calcination, and belongs to the field of lime production processes. The method comprises the following steps: introducing powdery limestone obtained by pretreating limestone raw ore into suspension flow dynamic calcining equipment, controlling the reaction temperature, time and air flow, calcining the powdery limestone to obtain a calcined product and high-temperature gas, separating CO2 in the high-temperature gas, recovering residual hot gas, re-feeding the recovered hot gas into a preheating chamber, and carrying out heat treatment on the recovered hot gas. The waste heat recycling is realized; and the prepared high-activity quick lime is separated, cooled and recycled. In the suspension flow dynamic roasting process, high-temperature gas is in contact with the material to transfer heat, CO2 gas is separated and removed after decomposition reaction is finished, the high-temperature gas is repeatedly used, heat is recycled, roasting energy consumption is effectively reduced, and the activity degree of the prepared high-activity lime reaches 380ml-415ml and meets the lime grade classification standard YB/T042-2014.
一种粉状石灰石悬浮流动态煅烧制备高活性石灰的方法，属于石灰生产工艺领域。本发明将石灰石原矿经预处理得到的粉状石灰石导入悬浮流动态煅烧设备中，控制反应的温度、时间和空气流量，对粉状石灰石进行煅烧，得到煅烧产品和高温气体，再分离高温气体中的CO2并回收剩余热气，将回收的热气重新给入到预热室内，实现了余热回收利用；制得的高活性生石灰经分离、冷却后回收。本发明的悬浮流动态焙烧过程中，高温气体与物料接触发生传热，分解反应结束后CO2气体分离去除，高温气体反复使用，热量得到了循环利用，有效降低了焙烧能耗，制得的高活性石灰活性度达380ml～415ml，符合石灰等级分类标准YB/T042‑2014。
Method for preparing high-activity lime through powdery limestone suspension flow dynamic calcination
The invention discloses a method for preparing high-activity lime through powdery limestone suspension flow dynamic calcination, and belongs to the field of lime production processes. The method comprises the following steps: introducing powdery limestone obtained by pretreating limestone raw ore into suspension flow dynamic calcining equipment, controlling the reaction temperature, time and air flow, calcining the powdery limestone to obtain a calcined product and high-temperature gas, separating CO2 in the high-temperature gas, recovering residual hot gas, re-feeding the recovered hot gas into a preheating chamber, and carrying out heat treatment on the recovered hot gas. The waste heat recycling is realized; and the prepared high-activity quick lime is separated, cooled and recycled. In the suspension flow dynamic roasting process, high-temperature gas is in contact with the material to transfer heat, CO2 gas is separated and removed after decomposition reaction is finished, the high-temperature gas is repeatedly used, heat is recycled, roasting energy consumption is effectively reduced, and the activity degree of the prepared high-activity lime reaches 380ml-415ml and meets the lime grade classification standard YB/T042-2014.
一种粉状石灰石悬浮流动态煅烧制备高活性石灰的方法，属于石灰生产工艺领域。本发明将石灰石原矿经预处理得到的粉状石灰石导入悬浮流动态煅烧设备中，控制反应的温度、时间和空气流量，对粉状石灰石进行煅烧，得到煅烧产品和高温气体，再分离高温气体中的CO2并回收剩余热气，将回收的热气重新给入到预热室内，实现了余热回收利用；制得的高活性生石灰经分离、冷却后回收。本发明的悬浮流动态焙烧过程中，高温气体与物料接触发生传热，分解反应结束后CO2气体分离去除，高温气体反复使用，热量得到了循环利用，有效降低了焙烧能耗，制得的高活性石灰活性度达380ml～415ml，符合石灰等级分类标准YB/T042‑2014。
Method for preparing high-activity lime through powdery limestone suspension flow dynamic calcination
一种粉状石灰石悬浮流动态煅烧制备高活性石灰的方法
LI YANJUN (author) / CHEN TONG (author) / ZHU XINRAN (author) / HAN YUEXIN (author)
2024-09-27
Patent
Electronic Resource
Chinese
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