Patent ID: 9724843
Date: 2017-08-08
CPC Classifications: B01F,B28B,F27B,F27D,G01N

Claim:
1. A cement production plant comprising: a preheater for preheating cement raw meal, a calciner for precalcining the preheated cement raw meal, a rotary tube furnace for firing the precalcined cement raw meal, wherein the calciner has a riser tube line having a calciner nozzle comprising an exterior wall and an interior wall and through which exhaust gases from the rotary tube furnace flow, wherein the calciner nozzle is formed by a section of the riser tube line which is constricted into a nozzle form, and wherein at least one gas offtake probe which is arranged flush on the interior wall of the calciner nozzle of the riser tube line at a point or plane of smallest cross section of the riser tube line.