Denis R Audet

Title: Denis R Audet: Innovator in Alumina Precipitation Processes

Introduction

Denis R Audet is a notable inventor based in Raheen, Ireland. He has made significant contributions to the field of chemical engineering, particularly in the processes related to alumina precipitation. With a total of 2 patents to his name, Audet's work has had a substantial impact on the efficiency of alumina extraction.

Latest Patents

Audet's latest patents focus on an improved process for precipitating alumina from Bayer process liquors. This innovative method involves dividing an incoming pregnant liquor stream into a minor portion of about 10 to 25% by volume. This minor stream is directed into a series of small tanks where it is allowed to agglomerate. Fine aluminum hydroxide seed, with a median particle size of between 30 and 60 microns, is added to this stream. The resulting slurry from the agglomeration stage is then directed to larger vessels for the growth stage. At this point, the remaining portion of the pregnant liquor is combined with the agglomerated slurry. A coarse seed charge of about 150 to 600 grams/liter, with a median particle size of between 80 and 100 microns, is introduced into the second set of vessels. This improved process significantly enhances the yield of a strong coarse aluminum trihydroxide product.

Career Highlights

Denis R Audet is associated with Alcan International Limited, where he has applied his expertise in chemical processes. His work has contributed to advancements in the field, particularly in optimizing alumina production.

Collaborations

Audet has collaborated with notable coworkers such as Charles D Ellis and Jacques E Larocque. Their combined efforts have furthered the development of innovative processes in the industry.

Conclusion

Denis R Audet's contributions to alumina precipitation processes exemplify the importance of innovation in chemical engineering. His patents reflect a commitment to improving industrial processes and enhancing product yields.