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Clays and Clay Minerals; June 2005; v. 53; no. 3; p. 301-309; DOI: 10.1346/CCMN.2005.0530310
© 2005 Clay Minerals Society
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AN ATTEMPT TO MINIMIZE THE COST OF EXTRACTING LITHIUM FROM BORON CLAYS THROUGH ROBUST PROCESS DESIGN

Atil Büyükburç1 and Gülser Köksal2

1 Eti Mine Works, R&D Department, Güvercinlik, 06377 Ankara, Turkey
2 Middle East Technical University, Industrial Engineering Department, 06531 Ankara, Turkey

* E-mail address of corresponding author: koksal{at}ie.metu.edu.tr

In this study a robust design method is developed for extracting Li from boron (B) clays with the aim of minimizing cost and maximizing productivity. Lithium is commercially extracted from brines and certain minerals. Its extraction from clays has previously been found to be expensive, a major part of the extraction cost being attributed to the raw materials used. In this study, raw materials from lower-cost resources are used without applying any standardization to them and this might increase variation in the results. To minimize the variation, and achieve high extraction levels, robust design, statistical design and analysis of experiments, and response surface methodologies are utilized. As a result, consistently higher extraction levels have been achieved compared to previous studies. The experiments were conducted using the Bigadiç boron clay fields in Turkey. However, the method is generally applicable to other cases also.

Key Words: Boron Clays • Design Optimization • Extraction • Lithium • Statistical Design of Experiments • Response Surface Methodology • Robust Design






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