| 发明名称 |
System for the production of fine lime |
| 摘要 |
The present invention is directed to a method of continuously calcining a limestone particle mix comprising a fine fraction of limestone particles and a coarser fraction of limestone particles. The limestone particles heat treated in a flash calciner in which the mixture is entrained and heated in process gas for an amount of time sufficient to fully calcine the fine fraction but not the coarser fraction. The process gas is separated from the heated limestone mixture. The mixture is directed to a retention vessel in which the mixture is retained for an amount of time sufficient to fully calcine the coarser fraction utilizing the process heat present in the limestone mixture. No external heat needs to be added to the retention vessel during the retention step to promote calcination. |
| 申请公布号 |
US9573847(B2) |
申请公布日期 |
2017.02.21 |
| 申请号 |
US201314442446 |
申请日期 |
2013.11.27 |
| 申请人 |
FLSMIDTH A/S |
发明人 |
Prokesch Michael Edward |
| 分类号 |
C04B2/10;C04B2/12;C04B2/02 |
主分类号 |
C04B2/10 |
| 代理机构 |
|
代理人 |
Weaver Matthew R.;DeJoseph Daniel;Pile Aaron M. |
| 主权项 |
1. A method of continuously calcining a limestone particle mix comprising a fine fraction of limestone particles and a coarser fraction of limestone particles, said method comprising (a) heat treating the limestone particles in a flash calciner in which the particles are entrained and heated in process gas for an amount of time sufficient to fully calcine the fine fraction but not the coarser fraction; (b) separating the heated limestone particles from the process gas; (c) maintaining the separated heated limestone particles in a retention vessel for an amount of time sufficient to fully calcine the coarser fraction by transferring the heat contained in the fine fraction of particles to the coarser fraction of particles. |
| 地址 |
DK |
