Jacques E Larocque

Title: Jacques E Larocque: Innovator in Alumina Precipitation Processes

Introduction

Jacques E Larocque is a notable inventor based in Jonquiere, Canada. He has made significant contributions to the field of alumina precipitation, holding 2 patents that enhance the efficiency of the Bayer process.

Latest Patents

One of his latest patents is titled "Process for Precipitating Alumina from Bayer Process Liquor." This innovative process 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 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 increases the yield of a strong coarse aluminum trihydroxide product.

Career Highlights

Jacques E Larocque has worked with Alcan International Limited, where he has applied his expertise in the field of alumina precipitation. His work has contributed to advancements in the efficiency and effectiveness of alumina production.

Collaborations

Jacques has collaborated with notable coworkers such as Charles D Ellis and Denis R Audet, further enhancing the innovative processes developed at Alcan International Limited.

Conclusion

Jacques E Larocque's contributions to the field of alumina precipitation through his innovative processes have made a significant impact on the industry. His work continues to influence the efficiency of alumina production methods.