flender kupplung H3-DH-13-D Helical speed reduction gearbox H3

Flender/Flender Gear Units/Helical speed reduction gearbox H3

e the flame and the temperature profile of the rotary kiln and require permanent adjustment of the burner to achieve constant product quality and low pollutant emissions with dif-ferent fuel inputs. This requires mod- ern burner control system. Another option to improve energy balance and reduce the carbon foot- print is the production of cements with lower contents of cement clinker, because the calcination of the clinker in particular consumes great amount of energy. The substitutes used are in - dustrial by-products such as slag sand and fly ash. Although the energy bal - ance of these substitutes is better, they cannot be added in just any amount, as this would significantly impair the quality of the cement. Hence, intelli-gent measuring methods and profes-sional field devices are absolutely nec- essary for the apportioning of these substitute substances and the subse-quent homogenization processes. In recent years, research has focused more and more on the use of alterna- tive binding agents with lower require- ments of lime and energy. Apart from so-called belite cements, geopolymers and sulphoaluminate cements, Celite- ment is to be mentioned here, which is based on hitherto unknown calcium hy - drosilicates. The future will show which approaches can provide sustained improvement of the energy balance and the carbon footprint of cement. Success factor: process stability Aside from capital-intensive measures such as the installation of heat recov - ery systems and new motors, the use of refuse-derived fuels or the develop- ment of new binding agents, one as-pect should not be forgotten when we consider energy optimization, namely maintaining stable and trouble-free production process. To enable cement works to produce cement around the clock, all sub-processes from crush- ing the limestone to calcination of the clinker, all the way to storing the fin-ished cement in silos need to func-tion without fault and interact perfect- ly. Up-