Nanopartikül kolemanit mineralinin ısıl özellikleri ve uygulamada sağlayacağı kazanımlar

Year 2021, , 198 - 208, 15.01.2021

Sezai Kutuk , Tuba Kutuk

https://doi.org/10.17714/gumusfenbil.648698

Abstract

Kolemanit minerali (C-3 mm) ve öğütülmüş kolemanit mineralleri (C-75 µm ile C-45 µm tozları) Eti Maden Bigadiç Bor İşletme Müdürlüğünden tedarik edildi. C-3 mm başlangıç malzemesi yüksek enerjili bilyalı değirmende öğütme işlemine tabi tutuldu. Akabinde bu malzeme mikronaltı boyutlu/nano boyutlu partiküller üretebilmek amacıyla ASTM standardındaki boyutu 25 μm olan bir elekten geçirildi (C-25 μm). C-3 mm mineralinin, C-75 µm tozunun, C-45 µm tozunun ve C-25 μm tozunun ısıl özellikleri TermoGravimetri (TG)/Diferansiyel Termal Analiz (DTA) cihazı ile belirlendi. DTA ölçümünde, ilk ayrışma sıcaklığı C-3 mm minerali için 406°C’de yüksek şiddete sahip endotermik bir pik ile gözükürken, C-25 μm tozu için 388°C’de endotermik bir pik ile ortaya çıktı. Diferansiyel TG ölçümünde, ilk ayrışma sıcaklığı C-3 mm minerali için 403°C’de yüksek şiddete sahip dar endotermik bir pik ile belirdi ve C-25 μm tozu için de 388°C’de endotermik bir pik ile ortaya çıktı. Önceki bir çalışmada, C-75 µm, C-45 µm ile C-25 μm tozları Portland çimentolu betona farklı oranlarda ilave edilmiştir. Çalışma sonunda betonun basınç dayanımında belirgin bir artış gözlemlendiği rapor edilmiştir. Bu bulguların nano boyutlu bor mineralleri ile alakalı mühendislik araştırmalarına ışık tutacağı düşünülmektedir.

Keywords

Bilyalı öğütme, Bor, Isıl özellik, Kolemanit minerali, Nanopartikül, TG/DTA

Supporting Institution

Recep Tayyip Erdoğan Üniversitesi

Project Number

2014.109.03.01

Thanks

Bu çalışmayı finansal olarak destekleyen Recep Tayyip Erdoğan Üniversitesi Bilimsel Araştırma Projeleri Birimine (No: 2014.109.03.01) ve başlangıç malzemelerini temin eden Eti Maden İşletmeleri Genel Müdürlüğüne arz-ı şükran ederiz.

Thermal properties of nanoparticle colemanite mineral and its advantages in application

Abstract

Colemanite mineral (C-3 mm) and milled colemanite minerals (C-75 µm and C-45 µm powders) were obtained from Eti Maden Bigadic Boron Operation Directorate. The C-3 mm initial material was milled in a high-energy ball mill. This material was then sifted using a sieve with a size of 25 μm according to the ASTM standard (C-25 μm) for the purpose of producing submicron-sized/nano-sized particles. Thermal properties of the C-3 mm mineral, C-75 µm powder, C-45 µm powder and C-25 μm powder were examined using ThermoGravimetry (TG)/Differential Thermal Analysis (DTA) device. In DTA measurement, first decomposition temperature appeared with a high intensity endothermic peak at 406°C for the C-3 mm mineral and existed with an endothermic peak at 388°C for the C-25 μm powder. In Differential TG measurement, the first decomposition temperature seemed with a high intensity-narrow endothermic peak at 403°C for the C-3 mm mineral and occurred with an endothermic peak at 388°C for the C-25 μm powder. In a previous study, the C-75 μm, C-45 μm and C-25 μm powders have been added to Portland cement concrete at varying ratios. Based on the results obtained, it was noted that the compressive strength of concrete increases significantly. Such findings are thought to shed light on engineering research related to nano-sized boron minerals.

Keywords

Ball milling, Boron, Thermal property, Colemanite mineral, Nanoparticle, TG/DTA

Project Number

2014.109.03.01

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