Expert Details

Expert in Hydrometallurgy, Pyrometallurgy, and Extraction and Recycling of Metal-Containing Raw Materials

Expert ID: 108224 Colorado, USA

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Expert B. Expert has in-depth experience on molybdenum recovery and rhenium recovery (includes six patents and papers): pressure leaching of molybdenite (molybdenum disulfide) concentrates, ammonium dimolybdate (ADM) production, preparing MoS2 lubricant, deoiling molybdenite, and upgrading molybdenite by leaching. Other plant experience includes MoS2 roasting; sublimation of molybdic oxide; ammonium perrhenate production; solvent extraction, purification, and crystallization; spent catalyst recycling; and production of specialty molybdenum chemicals (molybdenum salt recovery; rhenium salt recovery).

Expert led the Amax research group that developed technology for producing ammonium paratungstate (APT), commercialized at Ft. Madison, Iowa. He developed a process to recover ammonium metavanadate (AMV) and nickel from petroleum coke, recovered MoVNiCo from spent catalyst, and assisted an aircraft manufacturer in procuring vanadium tetrachloride, including evaluation of producer capabilities. Expert holds
12 papers and patents related to either tungsten or vanadium recovery or purification.

Expert has worked at numerous slagging hazardous waste incineration operations, generally on problems involving either eliminating or enhancing slag formation, vitrification of sludge or metal-rich residues, and processing flue dust. He is expert in controlling slag deposition in incinerator, afterburner, and quench systems. He has served three times as an expert witness on matters related to slag formation, production, uses, and environmental stability. He is also experienced with aggregate production from hazardous wastes; production of blasting grit, abrasive, and shingle granules; and vitrification of sewage sludge and marketing products therefrom.

Expert is expert in manufacturing, raw material procurement, and marketing Mn, Zn, Fe, and Cu fertilizer and animal micronutrients. He works in plants producing these micronutrients, and also performs in-depth marketing studies.

Expert is expert on recycling spent circuit-board etchant, including production of CuO, CuSO4-5H2O, copper cathode, and regenerated etchant from these materials. He is on a first-name basis with North American recyclers of spent plating wastes, etchants, and printed circuit boards.

Expert's copper experience includes smelting and leaching of copper ores, concentrates, and scrap; rotary furnace production of brass and bronze; deleading of water valve surfaces; Cu recovery from spent catalyst and etchant; production of CuOx, CuSO4, and CuClx; finding "homes" for copper wastes in smelter and conversion operations; solvent extraction (electrowinning) to metal or salts; and production of copper micronutrients.

Expert's Ni-Co experience includes battery recycling, specifically nickel-cadmium battery recycling, Ni-metal hydride, and Li-ion recycling. Smelting and leaching of NiCoCuFe concentrates and matte; nickel and cobalt salt recovery from tankhouse bleed and from secondary feedstocks; separating Ni from Co by ozonation; and finding "homes" for NiCo wastes (including prior upgrading) in smelter and hydrometallurgical conversion operations. Expert led the team that innovated Amax's acid pressure leach process for treating nickel laterite. At Port Nickel (New Orleans), he was Process Engineer during start-up of the pressure leaching, residue flotation, and the hydrogen reduction circuits.

Expert is experienced in the various commercial routes for recovering secondary and primary zinc. He has been part of teams evaluating operations for acquisition. Other projects include processing NiCd batteries; leaching flue dust; slag fuming; rotary kiln and plasma-arc treatment of EAF dust; production of zinc sulfate, zinc oxide, zinc chloride, and zinc ammonium chloride; zinc recovery from auto scrap; and conversion of galvanizer's dross to roofing granules, secondary Zn ingot, and ZnO fines.

Expert has extensive in-plant experience in smelting of secondary lead and tin feedstocks, including spent lead-acid batteries, tetraethyl lead, tin secondaries, and dust handling. Expert's expertise is particularly strong in the use of rotary furnaces and kilns. One of his papers led to substantial improvement in soda-matte secondary lead smelting efficiency. He works closely with domestic producers.

Expert provided technology and start-up expertise for a major facility in Bolivia for converting stibnite concentrate to Sb2O3, and helped the U.S. trade delegation establish Chinese antimony oxide production technology and costs to support fair-trade negotiations. Converted antimony feedstocks to metal, smelted tin residues to secondary ingot, treated flue dust treatment by wet and pyro methods, and recycled tin sludges.

Expert focuses his technical and project management experience on the recovery, separation, and refining of raw materials containing metals, by means of hydrometallurgy and pyrometallurgy. Expert has 38 years of experience, is a Registered Professional Engineer, has authored 33 technical papers, and holds 30 U.S. patents.

Expert’s work in this area includes incorporating additional feedstocks to the conventional thermite process for production of ferromolybdenum.

Expert consulted on the manufacturing of molybdenum, tungsten, and rhenium chemicals: troubleshooting, unit operation startups and new product development.He advised on the recovery of copper, nickel, cobalt, lead, and precious metals from industrial wastes: troubleshooting, unit operation startups, and new product development. Typical feedstocks involved include spent catalyst, batteries, etchants, plating wastes, circuit boards, tin-rich secondaries, byproduct salts, slags, drosses, and refractory metals (molybdenum, tungsten, rhenium, tantalum, and niobium). Expert consulted on technical and marketing criteria to profitably recover micronutrients from secondary materials, focusing on zinc, copper, manganese, and iron.He advised on the recovery of metal values from spent nickel-cadmium (NiCd) batteries, from spent nickel metal hydride (NiMH) batteries, and from spent lithium-ion (Li-Ion) batteries. Expert is also expert in rotary furnace processing of lead, tin, and copper secondaries. Expert consulted on the production of crude and refined pigment-grade antimony oxide, including the recovery of copper chemicals from spent etchants, plating wastes, and circuit boards.

Expert may consult nationally and internationally, and is also local to the following cities: Denver, Colorado - Colorado Springs, Colorado - Aurora, Colorado - Fort Collins, Colorado - Arvada, Colorado - Westminster, Colorado - Boulder, Colorado - Greeley, Colorado - Longmont, Colorado - Cheyenne, Wyoming

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Year Degree Subject Institution
Year: 1967 Degree: Ph.D. Subject: Metallurgical Engineering Institution: University of Minnesota
Year: 1964 Degree: B.S. Subject: Metallurgical Engineering Institution: Cornell University

Work History

Years Employer Title Department Responsibilities
Years: 1997 to Present Employer: Undisclosed Title: Consulting Metallurgical Engineer Department: Responsibilities: Expert consults on the recovery and recycling of primary and secondary raw materials, resource location, and byproduct marketing, all supported by on-site laboratory and pilot plant process metallurgical services.
Years: 1983 to 1997 Employer: Hazen Research, Inc. Title: Principal Metallurgical Engineer Department: Responsibilities: He was involved in extractive metallurgy of primary and secondary materials.
Years: 1972 to 1982 Employer: Amax, Inc. Title: Senior Staff Metallurgist Department: Corporate R&D Responsibilities: Expert was responsible for the extractive metallurgy of tungsten, molybdenum, nickel, cobalt, and copper.
Years: 1967 to 1972 Employer: Kennecott Copper Title: Research Engineer Department: Corporate R&D Responsibilities: He was involved in the extractive metallurgy of copper, molybdenum, and rhenium.

Career Accomplishments

Associations / Societies
Expert is a member of Tau Beta Pi, the American Institute of Mining, Metallurgical and Petroleum Engineers (AIME), and the Canadian Institute of Mining and Metallurgy (CIM).
Licenses / Certifications
He is a Professional Engineer in Colorado.
Professional Appointments
Expert has been an Adjunct Professor at the an American University for nearly 30 years. He was past President of Denver's AIME-ASM chapter.
Awards / Recognition
He was a distinguished lecturer for the Metallurgical Society of AIME.
Publications and Patents Summary
Expert has authored 32 technical papers, and holds 30 U.S. patents.

Additional Experience

Expert Witness Experience
Expert has served as an expert witness in cases related to heavy metals in slag, heavy metals in micronutrient fertilizers, recycling of slags from copper production, and production of nickel/cobalt from laterite ores.
Training / Seminars
He teaches two graduate-level courses on industrial recycling practices at an American University, and organizes a three-day short course entitled that involves recycling metals from waste.
Vendor Selection
Expert has experience locating vendors of equipment and services related to chemicals containing metals. He has access to technical papers and extensive personal contacts to aid in vendor location.
Marketing Experience
He has performed market studies related to sources and outlets for metal-rich byproducts and wastes, including physical and chemical properties, tonnages, pricing, and competitive factors.
Other Relevant Experience
Expert has wide industrial contacts in the recovery and marketing of values from metal-containing raw materials, byproducts, and wastes.

Fields of Expertise

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