The Correlation of Roasting Conditions in Selective Potassium Extraction from K-Feldspar Ore

Feldspar minerals are essential ingredients for the glass and ceramic-glass industries. The potassium element found in certain proportions in the composition of K-feldspar minerals has a fundamental function in the growth of plants. The production of potassium fertilizers is mostly made from the sol...

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Bibliographic Details
Published in:Minerals (Basel) 2019-02, Vol.9 (2), p.109
Main Authors: Serdengeçti, Mete Tayhan, Baştürkcü, Hüseyin, Burat, Fırat, Kangal, Murat Olgaç
Format: Article
Language:English
Subjects:
Agricultural industry
Calcium chloride
Ceramics industry
Chloride
chloridizing roasting
Economics
Experiments
feldspar
Feldspars
Fertilizers
Food processing
Grain size
Halite
Halites
Industry
Leaching
Mica
Minerals
Muscovite
Particle size
Plant growth
Potash
Potassium
Potassium chloride
potassium extraction
Potassium sulfate
Solvents
Studies
Sulfuric acid
Sulphuric acid
Temperature
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Summary:Feldspar minerals are essential ingredients for the glass and ceramic-glass industries. The potassium element found in certain proportions in the composition of K-feldspar minerals has a fundamental function in the growth of plants. The production of potassium fertilizers is mostly made from the soluble minerals, which are located in lakes. Despite having a huge area of use in the agriculture industry, the reserves of these salts are limited and not evenly distributed in the earth’s crust. Due to the high availability of feldspar reserves in the earth’s crust, the production of potential potassium salts can provide a wide range of social and economic benefits. In this study, potassium extraction from a feldspar ore, which contained microcline, albite, muscovite, and quartz, was studied using chloridizing (CaCl2) roasting followed by leaching. Direct leaching experiments were also performed on the sample by adapting various solvents. To emphasize the importance of roasting before the dissolution process, different parameters such as particle size, roasting temperature, and duration, as well as the feldspar/CaCl2 ratio, were tested. Under the optimum conditions (i.e., −106 microns, 850 Co, 60 minutes, 1:1.5 feldspar:CaCl2), 99% of the potassium was successfully extracted from the ore feed.
ISSN:2075-163X
2075-163X
DOI:10.3390/min9020109