Surface coating of micronized calcite (CaCO3) with stearic acid via an attritor mill

Yıl 2024, Cilt: 13 Sayı: 3

Ahmad Farid Ehsan Öner Toraman

https://doi.org/10.28948/ngumuh.1390147

Öz

In this study, the surface coating (modification) of micronized calcite (CaCO3, d50=135 μm) in a stirred media (bead) mill with stearic acid was investigated. As a result of 15 min grinding and 5 min coating experiments, a product with d50=2.15 μm and specific surface area of 3.21 m2/cm3 was obtained. The activation rate of this final product as an indicator of coating rate was 97.7%. According to the optimum coating results, the stearic acid rate was determined as 1%, the modification time was 7.5 min, the ball load was 900 g and the stirring speed was 600 rpm.

Anahtar Kelimeler

Calcite, Stearic acid, Surface modification, Dry coating, Active ratio

Destekleyen Kurum

Scientific Research Projects (BAP) Coordination Unit of Niğde Ömer Halisdemir University

Proje Numarası

MMF-2022/02

Mekanik kuru kaplama yoluyla mikronize kalsitin (CaCO3) stearik asit ile yüzey modifikasyonu

Öz

Bu çalışmada mikronize kalsitin (CaCO3, d50=135 μm) stearik asitli karıştırmalı ortam (bilyalı) değirmende yüzey kaplaması (modifikasyonu) incelenmiştir. Yapılan 15 dak öğütme ve 5 dak kaplama deneyleri sonucunda d50=2,15 μm ve özgül yüzey alanı 3.21 m2/cm3 olan bir ürün elde edilmiştir. Kaplama oranının bir göstergesi olarak nihai ürünün aktive oranı %97.7 elde edilmiştir. Optimum kaplama sonuçlarına göre stearik asit oranı %1, modifikasyon süresi 7.5 dak, bilya yükü 900 gr ve karıştırma hızı 600 rpm olarak belirlenmiştir.

Anahtar Kelimeler

Kalsit, Stearik asit, Yüzey modifikasyonu, Kuru kaplama, Aktive oranı

Destekleyen Kurum

Niğde Ömer Halisdemir Üniversitesi Bilimsel Araştırma Projeleri (BAP) Koordinasyon Birimi

Proje Numarası

MMF-2022/02

Kaynakça

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