Company Filing History:
Years Active: 1981-1993
Title: Innovations of Douglas J MacVicar
Introduction
Douglas J MacVicar is a notable inventor based in Port Colborne, Canada. He has made significant contributions to the field of metallurgy, particularly in the processing of nickel and cobalt. With a total of two patents to his name, MacVicar's work showcases his expertise and innovative approach to solving complex problems in the industry.
Latest Patents
One of MacVicar's latest patents is titled "Low temperature thermal upgrading of lateritic ores." This invention relates to a thermal upgrading process whereby nickel-containing limonite or limonite/saprolite blends are pelletized with requisite amounts of solid carbon reductant and a sulfide-bearing concentrating agent. The pellets are fed to a reactor where they are gradually heated, causing reduction of the metal values. The reduced pellets are then held in a 'metallics growth zone' of the reactor at a temperature high enough to allow for liquid-phase migration of the metallics within the pellets but below the point at which the pellets become sticky. The metallics growth zone is provided with a carefully controlled combustion gas atmosphere equivalent to about 60-65% aeration of partial combustion of natural gas, which prevents further reduction or re-oxidation and thus provides a good environment for metallic particle growth. After a sufficient retention time, the pellets are then rapidly cooled to prevent the disproportionation of wustite to magnetite. The cooled pellets are then ground, and the magnetic fraction is separated.
Another significant patent is the "Process for electrowinning nickel or cobalt." This process involves electrowinning nickel or cobalt from an electrolyte in apparatus having spaced insoluble anodes and cathodes. Each anode is provided with diaphragm means for defining an anolyte compartment. A frothing agent is introduced into the feed electrolyte, which expedites the withdrawal of spent electrolyte and anodically generated gases.
Career Highlights
MacVicar has had a distinguished career at Inco Limited, where he has applied his innovative ideas to improve processes in metallurgy. His work has not only advanced the field but has also contributed to the efficiency and effectiveness of nickel and cobalt production.
Collaborations
Throughout his career, MacVicar has collaborated with several talented individuals, including Carlos M Diaz and Ahmed Vahed. These collaborations have fostered an environment of innovation and have led to the development of groundbreaking technologies in the industry.