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TURKISH FELDSPARS-IHSAN BOZDOGAN, Slides of Materials science

PHYSICAL AND CHEMICAL PROERTIES OF TURKISH FELDSPARS

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2018/2019

Uploaded on 11/02/2019

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| Advantages of floated feldspar p _ * Floated product virtually eliminates Fe,0; and TiO, contaminants * The result is: No problems occur with variable shades of whiteness or other colours after firing, _ + Less second quality product, more efficient production level « , » . Advantages of floated feldspar: 4 Andeer ascot of using floated feldspar is that it increases the fired strength of the product, ~ « Removing mica from the feldspar enables a better. surface to be obtained after polishing a“ * Overall consistency of the feldspar product is another key advantage Advantages of floated feldspar - For ceramic industry. fired colour is the most significant indication. TiO, and Fe,O, contents ~ . determine the grade of feldspar products. Increasing the Ti, content’ turns. the fired colour into yellowish: While inereasing the Fe,O, content leads to the _ fired colour to greyish ; By reducing Fe,O, and TiO, contents of the feldspar by flotation method the following advantages , in order to reduce the production costs , will be reached, Flotation ESAN’s floated Feldspars typical chemical analysis - %e _ ESFS0LGG ESP.S01FG ESF 501NGG_ SiO, 70,00 70.00 70.00 Al,O, 18.00 18.00 18.40 _ FeO, 0.04 0.04 0.01 TIO, 0.05 0.05 0.02 _NajO 10,50 10.50 10.50 +350 mic 10 +150 mic 5 1 Flotation During the recent vears due to the increase of unglazed » porcelain tile production the need of a white firing coloured feldspar + with less Fe;O, and TiO, content - also increased. After a careful geological study, the suitable ore bodies for _ flotation are exploited by selective mining methods. The raw material is crushed, blended and milled down to liberation diameter in order to prepare for the flotation. Production The production of Standard, Medium and Extra grade feldspar are realised by means of crushing, mixing and blending. * Colouring impurities TiO, and Fe,O, removed by means of flotation , the result is: White firing colour. rh % Standard — Medium Extra ~~ Floated Fe,0, O15 0.09 0.06 O01 TiO, 0,25 0,16 O10 0,02 Geology and deposits” _ * The albite deposits are located in south western part of Turkey in the provinces Mugla and Aydin _ * Generally the massive has a core of probably Precambrian * Turkish Feldspar mines can reach up to 300 m length , 40 - 50 min width and 80 mi depth