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Nefelinli siyenitin en büyük tüketim alanları cam ve seramik sanayileridir. Serbest silis içermemesi, yüksek alkali ve alümina içermesi, yüksek ergitme gücü ve dar erime aralığı, cam endüstrisine ideal uyum gösteren karakteristiklerdir. Endüstrinin çeşitli kollarında kullanım alanı ve miktarı hızla artan bu değerli hammaddenin en büyük rezervleri Rusya, Kanada, Norveç, Brezilya, Çin ve Türkiye’de bulunmaktadır. Türkiye’deki madenciliği, Kırşehir ilinin Akpınar bölgesinde yapılmaktadır. Akpınar-Kırşehir yöresi nefelinli siyeniti, İç Anadolu Kristalen Karmaşığı içerisinde yayılım açısından en küçük intrüzif kütlelerden biri olup alkali plütonik kayalardan oluşmaktadır. Türkiye’deki sanayiciler açısından, nefelinli siyenitin alışılmışın dışında pahalı bir hammadde olarak görülmesi sonucunda, tüketimi düşük miktarlarda olmaktadır. Yeterince ilgi gösterilmeyen bu hammadde hakkında akademik anlamdaki bilimsel çalışmaların sınırlı kaldığı da görülmüştür. Hammaddelerin tane boyutunun küçültmesi aşamasında ortaya çıkan enerji tüketimi kayacın kristal yapısı, fiziksel ve mekanik özellikleri ile ilişkilidir. Bu çalışmada, Akpınar-Kırşehir yöresindeki nefelinli siyenitin mineralojik, ısıl, fiziksel ve mekanik özellikleri ile Hardgrove öğütülebilirlik değeri (HGI: Hardgrove Grindability Index) araştırılmıştır. Nefelinli siyenitin mineralojik özellikleri, X-Işını kırınımı (XRD: X-Ray diffraction) ve ince kesit incelemeleri ile; ısıl özellikleri, termogravimetrik ve diferansiyel taramalı kalorimetri (DSC/TGA: thermogravimetric and differential scanning calorimetry) ve pişme rengi ölçümü ile belirlenmiştir. Fiziksel özelliklerinden, birim hacim ağırlık, su emme oranı ve porozite değerleri; mekanik özelliklerden, Schmidt yüzey sertliği, Ultrasonik P dalga hızı ve tek eksenli basınç dayanımı değerleri belirlenmiştir. Ayrıca HGI değerinden Bond iş indeksi değeri hesaplanmıştır.
The largest consumption areas of Nefelinli cyanite are the glass and ceramic industries. It does not contain free silic, high alkaline and aluminum content, high erguising power and narrow erguising range are the characteristics that perfectly adapt to the glass industry. The largest reserves of this valuable raw material, which is rapidly increasing in the use area and quantity of the various branches of the industry, are in Russia, Canada, Norway, Brazil, China and Turkey. The mining in Turkey is carried out in the Akpınar region of Kırşehir province. Akpınar-Kırşehir district Nefelinli siyeniti is one of the smallest intrusive masses in terms of spread within the Internal Anadolu Crystal Complex and is composed of alkali plutonic rocks. From the point of view of the industriers in Turkey, the result of the fact that nephelinic sianite is seen as a more expensive raw material than usual, its consumption is in low amounts. It has also been shown that the scientific studies on this raw material are limited in the academic sense. The energy consumption that occurs at the stage of the reduction of the one size of the raw materials is associated with the crystal structure of the rock, the physical and mechanical characteristics. In this study, the nephelinic sianite in the Akpınar-Kırşehir region has been studied with its mineral, thermal, physical and mechanical characteristics and the Hardgrove Grindability Index (HGI). The mineral characteristics of nephelinic cyanitis are determined by X-ray diffraction (XRD: X-ray diffraction) and thin cutting examinations; thermal characteristics, thermogravimetric and differential scanning calorimetry (DSC/TGA: thermogravimetric and differential scanning calorimetry) and cooking color measurement. From the physical characteristics, unit volume weight, water absorption rate and porosity values; from the mechanical characteristics, Schmidt surface hardness, Ultrasonic P wave speed and one-axis pressure resistance values are determined. The value of the Bond business index is also calculated from the HGI value.
The largest fields of consumption of nepheline syenite are the glass and ceramic industries. Its not containing free silica, containing high alkali and alumina, high melting power, and narrow melting range are ideal characteristics for the glass industry. Its field of use in various branches of the industry and the largest reserves of this valuable raw material whose quantity is rapidly increasing are found in Russia, Canada, Norway, Brazil, China, and Turkey. Its mining in Turkey is done in the Akpınar region of Kırşehir. Akpınar-Kırşehir region nepheline syenite is one of the smallest intrusive masses in the Central Anatolian Crystalline Karm dish spread and consists of alkali plutonic rocks. As a result of nepheline syenite being seen as an expensive raw material other than its being accustomed to in terms of industrialists in Turkey, it is being consumed at low quantities. It has also been seen that scientific studies in an academic sense about this raw material, which has not been shown sufficient interest, are limited. The energy consumption occurring during the reduction of the particle size of the raw materials is related to the crystal structure, physical and mechanical properties of the rock. In this study, mineralogical, thermal, physical and mechanical properties and Hardgrove grindability of nepheline syenite in Akpınar- Kırşehir region were investigated. The mineralogical properties of nepheline syenite were determined by X-Ray diffraction (XRD) and thin section studies; The thermal properties were determined by thermogravimetric and differential scanning calorimetry (DSC/TGA) and firing color measurement. Physical properties of unit weight, water absorption rate and porosity values; Among the mechanical properties, Schmidt surface hardness, Ultrasonic P wave velocity and uniaxial compressive strength values were determined. In addition, the Bond work index value was calculated from the HGI value.
Alan : Fen Bilimleri ve Matematik; Mühendislik
Dergi Türü : Ulusal
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