Company Filing History:
Years Active: 1984-1987
Title: The Innovative Contributions of Edward L Cambridge
Introduction
Edward L Cambridge is a notable inventor based in Tucson, AZ (US), recognized for his significant contributions to the field of materials science. With a total of 5 patents, he has developed innovative processes that enhance the purity and application of alumina and improve electrolytic reduction methods.
Latest Patents
One of his latest patents focuses on the production of high purity alumina. This process involves the formation of high purity alumina from Bayer Process alumina trihydrate (gibbsite). The solid hydrated alumina is reacted with concentrated HCl, leading to the conversion to aluminum chloride hexahydrate (ACH). The ACH, or a mixture of ACH and unreacted hydrated alumina, is recovered as a solid and calcined to produce high purity alumina. This method significantly reduces soda contents in the product anhydrous alumina by 98% or greater, while also markedly decreasing other impurities such as silica, iron, and magnesium. The purified alumina finds applications in specialty ceramics, catalyst supports, adsorbents, electronic components, and prosthetic devices.
Another significant patent involves electrolytic reduction cells. In this innovation, molten metal is produced by electrolysis of a molten electrolyte, which is less dense than the molten metal product. The molten metal collects at the bottom of the cell, where a specially designed filter allows for the extraction of molten metal without simultaneous withdrawal of molten electrolyte. This filter is constructed from materials resistant to both molten metal and electrolyte, ensuring efficient operation. In the case of aluminum production, titanium diboride is preferred for the filter construction.
Career Highlights
Throughout his career, Edward L Cambridge has worked with prominent companies such as Atlantic Richfield Company and Alcan International Limited. His experience in these organizations has contributed to his expertise in materials science and innovation.
Collaborations
Edward has collaborated with notable individuals in his field, including Raouf Loutfy and James C Withers. These partnerships have likely fostered the exchange of ideas and advancements in their respective areas of expertise.
Conclusion
Edward L Cambridge's innovative work in the production of high purity alumina and electrolytic reduction cells showcases his significant contributions to materials science. His patents not only enhance the purity of alumina but also improve the efficiency of metal production processes.