John F Spisak

Title: John F Spisak: Innovator in Sequential Flotation Processes

Introduction

John F Spisak is a notable inventor based in Arvada, Colorado. He has made significant contributions to the field of mineral processing, particularly in the flotation of sulfide ores. His innovative approach has led to advancements in the recovery of valuable metals from complex ore types.

Latest Patents

John F Spisak holds a patent for a process titled "Sequential flotation of sulfide ores." This patent describes a sequential flotation process designed to recover high-grade concentrates of copper, lead, and cobalt-nickel from sulfide ores. The process involves conditioning a primary grind ore pulp with SO₂ as H₂SO₃ under intense aeration, followed by sequential flotation. This method includes regrinding and conditioning of a copper rougher concentrate obtained in the first flotation step for copper.

Career Highlights

Spisak is associated with Anschutz Mining Corporation, where he applies his expertise in mineral processing. His work has been instrumental in enhancing the efficiency of metal recovery processes, contributing to the mining industry's advancements.

Collaborations

Throughout his career, John F Spisak has collaborated with notable colleagues, including Douglas R Shaw and Jerome P Downey. These partnerships have fostered innovation and development in the field of flotation processes.

Conclusion

John F Spisak's contributions to the field of mineral processing, particularly through his patented sequential flotation process, highlight his role as an innovator. His work continues to influence the mining industry and improve the recovery of valuable metals from sulfide ores.