Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Distribution of Lanthanides, Yttrium, and Scandium in the Pilot-Scale Beneficiation of Fly Ashes Derived from Eastern Kentucky Coals

Journal Article · · Minerals
DOI:https://doi.org/10.3390/min10020105· OSTI ID:1595167
 [1];  [2];  [3];  [3];  [3];  [4];  [4];  [4];  [4];  [5];  [5]
  1. Univ. of Kentucky, Lexington, KY (United States). Center for Applied Energy Research; Univ. of Kentucky, Lexington, KY (United States). Dept. of Earth & Environmental Sciences
  2. Univ. of Kentucky, Lexington, KY (United States). Center for Applied Energy Research; Univ. of Kentucky, Lexington, KY (United States). Dept. of Mining Engineering
  3. Physical Sciences Inc., Andover, MA (United States)
  4. Univ. of Kentucky, Lexington, KY (United States). Center for Applied Energy Research
  5. Winner Water Services, Sharon, PA (United States)
+ Show Author Affiliations

In this study, Central Appalachian coal-derived fly ashes from two power plants were beneficiated in a pilot-scale facility in order to produce a product with a relatively consistent concentration of rare earth elements (REE). The <200-mesh final fly ash product was produced by removing the carbon- and Fe-rich particles prior to screening at 200 mesh (75 µm). The Plant D fly ash had high concentrations of CaO and SO3, which were diminished through the two months when the ash was being beneficiated, representing a consequence of the heat, humidity, and excessive rainfall in the Kentucky summer. The high CaO and SO3 concentrations through the early runs likely contributed to the lower REE in the <200-mesh products of those runs. Of the non-REE minor elements, Ba, V, Mn, Zn, and As showed the greatest between-run variations within the runs for each plant. The overall REE concentrations proved to be similar, both on a between-run basis for the individual fly ash sources and on a between-plant basis. Variations in fly ash quality will occur in larger-scale operations, so on-going attention to the fly ash quality and the response of the fly ash to beneficiation is necessary. Changes in the Plant D fly ash with time imply that both the freshness of the original ash and the length and conditions of its storage at the site of beneficiation could be factors in the quality and consistency of the processed fly ash.

Research Organization:
Physical Sciences Inc., Andover, MA (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE); USDOE
Grant/Contract Number:
FE0027167
OSTI ID:
1595167
Alternate ID(s):
OSTI ID: 1799869
Journal Information:
Minerals, Vol. 10, Issue 2; ISSN 2075-163X
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

References (19)

Determination of glass content and estimation of glass composition in fly ash using quantitative X-ray diffractometry journal November 2006
Nano-Scale Rare Earth Distribution in Fly Ash Derived from the Combustion of the Fire Clay Coal, Kentucky journal March 2019
Changes in the quality of coal combustion by-products produced by Kentucky power plants, 1978 to 1997: consequences of Clean Air Act directives journal May 1999
Coal deposits as potential alternative sources for lanthanides and yttrium journal May 2012
Coal-derived unburned carbons in fly ash: A review journal June 2017
Rare Elements in Coal Ashes journal September 1935
A new method for primary evaluation of the outlook for rare earth element ores journal October 2010
Petrographic examination of coal-combustion fly ash journal March 2012
Ponded and Landfilled Fly Ash as a Source of Rare Earth Elements from a Kentucky Power Plant journal January 2017
Rare Earth Element Distribution in Fly Ash Derived from the Fire Clay Coal, Kentucky journal January 2017
Distribution of rare earth elements in coal combustion fly ash, determined by SHRIMP-RG ion microprobe journal November 2017
Characterization of fly ash from Kentucky power plants journal March 1996
Sedimentary Rocks and Crustal Evolution: Tectonic Setting and Secular Trends journal January 1991
Fly ash characterization by SEM–EDS journal December 2006
Comparison of inductively coupled plasma spectrometry techniques for the direct determination of rare earth elements in digests from geological samples journal September 2010
Comparison of analytical performances of inductively coupled plasma mass spectrometry and inductively coupled plasma atomic emission spectrometry for trace analysis of bismuth and bismuth oxide journal April 2018
Dynamics in the Global Market for Rare Earths journal October 2012
Rare earth element-bearing coals from the Russian Far East deposits journal June 1996
Overview of trace element partitioning in flames and furnaces of utility coal-fired boilers journal August 1994

Similar Records

Related Subjects

58 GEOSCIENCES
Geochemistry &amp; Geophysics
Mineralogy
Mining &amp; Mineral Processing
rare earth elements
critical elements
coal combustion