Researcher:
Karadağlı, Emirhan

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Researcher

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Emirhan

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Karadağlı

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Karadağlı, Emirhan

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2018 - 20203

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Researcher Of Publications: search.filters.isAuthorOfPublication.f896bc6c-2e62-4047-8a2b-0b26b435e922

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    Valorisation of boron mining wastes in the production of wall and floor tiles
    (Elsevier Sci Ltd, 2018) Cicek, Bugra; Duman, Fatma; N/A; Karadağlı, Emirhan; Researcher; Koç University Boron and Advanced Materials Application and Research Center (KUBAM) / Koç Üniversitesi Bor ve İleri Malzemeler Uygulama ve Araştırma Merkezi (KUBAM); N/A; N/A
    A huge volume of boron mining wastes is generated in boron producing countries every year, necessitating the need to find a viable valorisation solution urgently. Their potential in the production of ceramic tiles to curb energy consumption in the ceramics manufacture has been investigated. The 5-6 wt% waste-containing ceramic tile formulations proposed had a boron oxide (B2O3) content in the range from 1 to 33 wt%. Owing to the fluxing ability of B2O3, the sintering temperature of the developed wall tile ceramics decreased down 70 degrees C-1050 degrees C, sintering temperature of the developed floor tile ceramics decreased down to 1130 degrees C, 65 degrees C lower compared to benchmarked commercial ceramics. The mechanical, chemical and physical properties of the new compositions were comparable to those of typical commercial products. The developed wall tiles had a water absorption of 19.39% and 20.46 N/mm(2) strength providing the requirements of TS EN ISO 10545 standard, where floor tiles had a 0.49% water absorption and 38.43 Ni mm(2) strength. There is considerable scope to incorporate boron mining waste in the production of more sustainable ceramics at industrial scales.
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    Boron mining and enrichment waste: a promising raw material for porcelain tile production
    (Wiley, 2020) N/A; N/A; N/A; Karadağlı, Emirhan; Çiçek, Buğra; Researcher; Researcher; Koç University Boron and Advanced Materials Application and Research Center (KUBAM) / Koç Üniversitesi Bor ve İleri Malzemeler Uygulama ve Araştırma Merkezi (KUBAM); Koç University Boron and Advanced Materials Application and Research Center (KUBAM) / Koç Üniversitesi Bor ve İleri Malzemeler Uygulama ve Araştırma Merkezi (KUBAM); N/A; N/A; N/A; N/A
    Boron mining and enrichment waste (BW) from boric acid (H3BO3) production is a by-product of the boron industry. BW exhibits B2O3 contents of 16-31 wt%, and therefore, could be used to effectively lower the sintering temperature of ceramics without increasing their thermal expansion coefficient. Herein, we introduced 3-10 wt% of BW to a formulation used for commercial porcelain tile production, and achieved a sintering temperature decrease of 38 degrees C (to 1195 degrees C). The resulting porcelain tiles exhibited a strength of 44.80 MPa and water absorption percentage of 0.01%, and therefore, met TS ISO EN 10545 requirements. Thus, this study paves the way for the use and valorization of BW in the production of porcelain tiles and could inspire the search for other opportunities to utilize BW in ceramic production.
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    Use of boron mining waste as an alternative to boric acid (H3BO3) in opaque frit production
    (Elsevier Sci Ltd, 2018) Duman, Fatma; Çiçek, Buğra; Karadağlı, Emirhan; Researcher; Researcher; Koç University AKKİM Boron-Based Materials & High-technology Chemicals Research & Application Center (KABAM) / Koç Üniversitesi AKKİM Bor Tabanlı Malzemeler ve İleri Teknoloji Kimyasallar Uygulama ve Araştırma Merkezi (KABAM); N/A; N/A; N/A; N/A
    Colemanite (CaO center dot 3B(2)O3 center dot 5H(2)) enrichment waste material from mines was employed as an alternative to boric acid (H3BO3) for producing opaque matt frits. The aim of the study was to reduce boric acid consumption and to substitute boron-containing waste material for H3BO3 used for frit production. Laboratory and pilot-scale production was carried out based on frit production methods currently used in the ceramic industry. The fits were then used to produce commercial glossy opaque glazes using existing fabrication and sintering processes with amounts ranging between 16 and 31 wt%. The fabricated glazes successfully passed EN ISO 10545 testing, exhibiting desirable surface abrasion, chemical resistance, thermal shock resistance, and staining characteristics.