Company Filing History:
Years Active: 1980-1983
Title: **James E. Lawver: Innovator in Phosphate Ore Beneficiation**
Introduction
James E. Lawver, based in Lakeland, Florida, is a notable inventor renowned for his contributions to the field of phosphate ore beneficiation. With two patents to his name, he has significantly advanced methods for improving the extraction and processing of phosphate ores, particularly those containing impurities such as dolomite and calcite.
Latest Patents
James E. Lawver's most recent patents include two innovative methods focused on the beneficiation of phosphate ores.
1. **Method of Beneficiating Phosphate Ores Containing Dolomite**
This patent details a method designed to enhance the quality of phosphate ore that also contains silica and alkaline earth metal carbonate impurities. The procedure encompasses several critical steps, including testing the ore for excessive levels of carbonate impurities, utilizing traditional flotation techniques to remove silica, and grinding the ore to achieve a particle size where at least 90% of particles are smaller than 0.355 mm. Following this, the ground ore is reagentized with water, a carbonate collector, a phosphate depressant, and a pH regulator to produce a flotation feed with 20-30% solids and a pH of 5.6-6.0. The flotation feed is subjected to reverse flotation to effectively remove carbonate impurities, resulting in a phosphate concentration gathered as the underflow of the flotation cell.
2. **Method of Beneficiating Phosphate Ores**
This patent outlines a comprehensive approach for treating a phosphate ore matrix containing apatite, siliceous gangue, and alkaline earth metal carbonate impurities. The method involves washing and sizing the ore, gravity separation, double float flotation, and phosphate-carbonate flotation separation. The end goal is to yield a phosphate ore concentrate with a high BPL content while maintaining a low concentration of alkaline earth metal carbonates.
Career Highlights
James E. Lawver is currently associated with International Minerals & Chemical Corporation (IMC), where he has played a pivotal role in advancing phosphate ore beneficiation technologies. His innovative methods have been instrumental in improving the efficiency and effectiveness of phosphate processing.
Collaborations
Throughout his career, Lawver has collaborated with prominent figures in the field, including Robert E. Snow and Walter O. McClintock. These partnerships have fostered an environment of innovation and knowledge sharing, leading to significant advancements in beneficiation techniques.
Conclusion
James E. Lawver stands out as a key inventor in the domain of phosphate ore beneficiation. His patented methods not only address the challenges associated with impurity removal but also contribute to the efficiency of phosphate extraction processes. With a commitment to innovation and collaboration, Lawver continues to impact the industry positively, ensuring better utilization of phosphate resources.