Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Reexamination Certificate
2006-11-10
2010-10-19
Kastler, Scott (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
C075S725000
Reexamination Certificate
active
07815709
ABSTRACT:
An electro-hydrometallurgical process that extracts zinc from electric furnace dust (EAF dust) to produce zinc of high purity and fine particle size, including leaching EAF dust with an alkaline solution to form a zincates solution, separating the liquid and gangue in the zincate solution; inertizing the gangue, purifying the liquid by cementation and separating the liquid from precipitated solids; purifying the zincate solution obtained from the cementation by adsorption, at least partially evaporating the resulting pure solution, bleeding at least a fraction of the concentrated solution obtained; crystallizing at least a fraction of the concentrated solution, electro-depositing zinc from the concentrated solution; and separating washing and drying deposited Zn.
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Webster's Third New International Dictionary, Unabridged. Definition of “bleed.” Copyright 1993.
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B. Mishra. Extractive Metallurgy: Hydrometallurgical Processes. ASM Handbooks Online. ASM International, 2002.
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Correa Peña y Lillo Duberlis
Vega Viveros Ricardo
DLA Piper (LLP) US
Duberlis Correa Pena Y Lillo
Kastler Scott
Tecnologias de Reciclaje S.A.
Vega Viveros Ricardo
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