David A Pearce

Title: David A Pearce: Innovator in Drying and Grinding Technologies

Introduction

David A Pearce is a notable inventor based in Bodmin, GB. He has made significant contributions to the field of material processing, particularly in the drying and grinding of particulate solid materials. With a total of 3 patents to his name, Pearce's work has advanced the efficiency and effectiveness of these processes.

Latest Patents

One of Pearce's latest patents is focused on drying suspensions of materials. This invention describes an apparatus and a process for drying a suspension of finely divided particulate solid material, resulting in a substantially dry and unagglomerated form. The apparatus features a grinding chamber containing a particulate grinding medium, such as silica, with a diameter of 1-5 mm. It includes a conduit for introducing the suspension into the grinding chamber and an impeller that rotates within it. The design incorporates a perforated base that allows heated gas to flow upward through the grinding chamber, facilitating the drying process. As the material dries, fine particles are carried upwards by the gas flow, and a filter system is employed to separate the dried particles from the gas.

Another significant patent by Pearce is for an apparatus designed for dry grinding of particulate solid material. This apparatus includes means for introducing the material into a grinding chamber, a perforated base for gas introduction, and an impeller for agitation. The design features a central imperforate area on the base, which directs gas flow preferentially through the chamber's walls. Additionally, a horizontal baffle plate is included to control the height of the particulate material bed, ensuring optimal grinding conditions.

Career Highlights

David A Pearce has established himself as a key figure in the field of material processing through his innovative patents. His work has not only contributed to advancements in technology but has also provided practical solutions for industries that rely on efficient drying and grinding processes.

Collaborations

Pearce has collaborated with notable colleagues, including Roger W Adams and Hugh R Falcon-Steward. These partnerships have likely enriched his work and contributed to the development of his innovative technologies.

Conclusion

David A Pearce's contributions to drying and grinding technologies demonstrate his commitment to innovation in material processing. His patents reflect a deep understanding of the challenges in this field and offer effective solutions that enhance operational efficiency.