Details:

Personal Author:
Collins, W. K. (William K.) ; Riley, W. D. (William D.) ; Jong, B. W.
Collins, W. K. (William K.) ; Riley, W. D. (William D.) ; Jong, B. W. Less -
Corporate Authors:
United States. Bureau of Mines.
Description:
"Engineered scavenger compounds (ESC's) developed by the U.S. Bureau of Mines are a novel class of compounds that selectively can recover a desired element from a solid or molten alloy. Lithium titanate (Li2Ti3O7 or Li2O·3TiO2) is used as an ESC to recover lithium (Li) from aluminum-lithium (AL-Li) alloys. X-ray diffraction measurements have shown that Li2Ti3O7 undergoes a phase change during scavenging from an orthorhombic structure to a hexagonal structure. This change is due to the incorporation of lithium in the matrix of the material and the effect of temperature. Although both phases are metastable, the hexagonal phase that forms during the scavenging of lithium from AL-Li alloys appears to be the more stable phase. Recovering lithium from the ESC by electrodeposition does not cause the structure to revert to the orthorhombic phase. The orthorhombic and the hexagonal structures of Li2Ti3O7 have similar scavenging capacities for lithium. This report proposes a new mechanism for the phase transformation." - NIOSHTIC-2

NIOSH no. 10004057


Subject:
[+]
Aluminum-lithium Alloys -- Recycling.
Lithium -- Metallurgy.
Lithium Titanate -- Metallography.
Phase Transformations (Statistical Physics)

Series:
Report of investigations (United States. Bureau of Mines) ; 9465
Document Type:
Report
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:4c5df4baf856c1be7d3f23f19702ec579afa78b6811cc72aacf16f4831079d0d
File Type:

Supporting Files

• No Additional Files

More +