ABB has successfully installed and commissioned the first SpectraFlow raw material online analyser in the Gulf region. Together with Raw Mix Preparation (RMP), ABB has delivered and installed two state of the art technologies to help Raysut Cement optimise their lime stone blending. RMP is a software solution that covers all stages of raw mix blending, from quarry to grinding, to ensure that quality targets are reached at the lowest possible cost.
With a rated annual production capacity of three million t, Raysut Cement is the largest cement producer in Oman. ABB’s installation demonstrates that sensitive high-tech measurement equipment can be used even in the harsh desert environment.
The order for the SpectraFlow analyser was placed in June 2008, with final erection and
commissioning in February 2009. The ensuing factory acceptance tests for both SpectraFlow and RMP were successfully concluded in summer 2010. A test operation was necessary to adapt the calibration of the system, from the powder-based calibration in the laboratory to the real limestone particle size as it comes out of the crusher.
ABB’s SpectraFlow online analyser is powered by the safe, environmentally friendly
SOLBASTM technology, which uses the near infrared (NIR) concept for the online
analysis of cement raw material. The NIR range from 700 to 2500 nanometres allows the use of standard lights as source of the analyser, rather than a radioactive source.
The SpectraFlow analyser helps to significantly stabilise the stockpile composition. It enables quick reactions to raw material fluctuation so the targeted stockpile lime saturation factor (LSF) of 180 can be reached with a very high accuracy. This decreases the usage of additives and stabilises the chemical composition of the raw mill feed, leading to smoother mill operation and to an improved kiln feed.
According to the client, the ABB SpectraFlow analyser is now running to their full satisfaction, saving 5 - 10% on heat consumption and increasing production by 3%.
Read the article online at: https://www.worldcement.com/africa-middle-east/22112010/abb_spectraflow_analyser_successfully_commissioned/