Publication: Kolemanitten Kalsiyum Fosfat Çimentosu Eldesi
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Fen Bilimleri Enstitüsü
Institute of Science and Technology
Institute of Science and Technology
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Bu çalışmada Kütahya Emet-Espey sahasından alınan kolemanit cevherinin üç farklı fosfat kaynağı ile farklı sıcaklık ve zaman aralıklarında reaksiyona sokularak kalsiyum fosfat çimentosu eldesi amaçlanmıştır. Kalsiyumca zengin olan kolemanit cevherinin 37oC ve 75oC sıcaklıklarda 1, 3, 6 ve 12 saat süren deneylerin sonucunda çözeltide bulunan fosfat iyonlarının yapıya bağlandığı; ve sonrasında 400oC ve 700oC sıcaklıkta üç saat süren ısıl işlemler sonucunda ise yapıya geçen fosfat iyonlarının kalsiyum ile bağ yaparak apatit formunu oluşturduğu gözlemlenmiştir. Elde edilen numunelerin karakterizasyonu FTIR, XRD, SEM ve yapısındaki B2O3’ün çözünme analizleri analitik olarak yapılmıştır. Yapılan çalışma sonucunda, kolemanitin bazik bir fosfat kaynağı ile reaksiyonu ve elde edilen ürünün ısıl işleme tabi tutulmasıyla apatit yapının ede edilebileceği gözlemlenmiştir.
The objective of this study is to produce calcium phosphate cement using colemanite mineral which was provided from Kütahya Emet-Espey. In this study, colemanite was treated using three different phosphate sources in various temperatures (37oC and 75oC) and time (1, 3, 6 and 12 hours) intervals. The analyses showed that the phosphate ions bonded witth calcium ions that exist in the colemanite structure. After the thermal treatment of the produced samples at both 400oC and 700oC temperatures for three hours, the apatite form was obtained. FTIR, XRD, SEM and particle size analyses were used to characterize the samples. The dissolution of B2O3 from colemanite was also analysed analytically. The study showed that the apatite structure can be obtained from colemanite using a basic phosphate source and then the thermal treatment of the produced sample.
The objective of this study is to produce calcium phosphate cement using colemanite mineral which was provided from Kütahya Emet-Espey. In this study, colemanite was treated using three different phosphate sources in various temperatures (37oC and 75oC) and time (1, 3, 6 and 12 hours) intervals. The analyses showed that the phosphate ions bonded witth calcium ions that exist in the colemanite structure. After the thermal treatment of the produced samples at both 400oC and 700oC temperatures for three hours, the apatite form was obtained. FTIR, XRD, SEM and particle size analyses were used to characterize the samples. The dissolution of B2O3 from colemanite was also analysed analytically. The study showed that the apatite structure can be obtained from colemanite using a basic phosphate source and then the thermal treatment of the produced sample.
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Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2010
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2010
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2010
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İTÜ theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
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Kolemanit, Bor, Fosfat çimentosu, Hidroksiapatit, Colemanite, Boron, Phosphate Cement, Hydroxyapatite
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