CONTINUOUS OPTICAL MEASUREMENT AND REAL-TIME CONTROL OF BAUXITE PARTICLE SIZE DISTRIBUTION IN THE GRINDING PROCESS: AN INNOVATIVE APPROACH FOR ENHANCED EFFICIENCY AND PERFORMANCE

The precise determination of bauxite's particle size distribution holds pivotal significance within the realm of alumina refineries, owing to its direct influence on the efficiency and performance of the grinding stage. This presentation introduces an innovative method grounded in continuous Optical Image processing , with the aim of tracking and analyzing bauxite particle size distribution during its journey on conveyors. The primary objective is to develop an advanced control system in tandem with a multivariable grinding model, geared toward real-time regulation of the open circuit fragmentation process.
The inception elucidates the design of a vision-based detection apparatus established to deliver a continuous and accurate sequence of particle size measurements for bauxite in transit on conveyors. An in-depth exploration of imaging and image processing technologies utilized to extract comprehensive insights regarding particle size distribution is also covered.
The implementation of the advanced control system and the multivariable model within the grinding process framework is subsequently unveiled. Leveraging real-time particle size data from the camera, the control apparatus automatically fine-tunes grinding parameters to uphold bauxite particle size within predetermined thresholds. This yields an optimization of grinding performance, prevention of undesirable particle size fluctuations out of mills, and enhancement of bauxite pulp quality.
Special attention is directed toward the inherent merits of this real-time regulation approach, juxtaposed against conventional methods reliant on sporadic sampling, which might prove less precise and responsive to variations in bauxite composition.
In summation, the utilization of a continuous optical capture device for monitoring bauxite particle size distribution during its conveyor transit, coupled with an advanced regulatory system at the grinding level, represents a noteworthy stride in optimizing the grinding process at the Vaudreuil plant. This endeavour fosters more resource-efficient management, augmented final product quality, and heightened operational stability.