PREPARATION OF CEMENT GRINDING AIDS BASED ON ALUMINA COMPOUNDS

Yıl 2020, , 123 - 129, 01.06.2020

Jin Hyok Ri Yun Sam Pak Kuang Song Yun

https://doi.org/10.30797/madencilik.758018

Öz

When the cement grinding is performed in the ball mill, the grinding efficiency decreases due to
the aggregation of the particles by the electrostatic phenomenon. Therefore, a lot of techniques
for preventing agglomeration using various grinding aids have been introduced. In this study, for
mineral grinding, the grinding aid composition including a water-soluble aluminate compound
and the grinding method in which this grinding aid is used were described. Grinding aids based
on aluminate-based compounds not only have high grinding efficiency but are also thermally
stable as they are inorganic materials. Compared with the conventional grinding aids based on
organic materials such as DEG and TIPA, even if the solid content is half contained, the grinding
efficiency is similar and thus the cost can be reduced to half.

Anahtar Kelimeler

Cement, Grinding aid, Alumina compound, Electrostatic

ALUMİNA BİLEŞİKLERİ ESASLI ÇİMENTO ÖĞÜTME YARDIMCILARININ HAZIRLANMASI

Öz

Çimento öğütme bilyalı değirmende gerçekleştirildiğinde, öğütmenin verimliliği tanelerin
elektrostatik olaylar sonucu topaklanmasıyla azalır. Bu nedenle, çeşitli öğütme yardımcıları
kullanılarak aglomerasyonun önlenmesi için birçok teknik geliştirilmiştir. Bu çalışmada, mineral
öğütme için, suda çözünür bir alüminat bileşiği içeren öğütme yardımcısı bileşimi ve bu öğütme
yardımcısının kullanıldığı bir öğütme yöntemi açıklanmıştır. Alüminat esaslı bileşiklere dayanan
öğütme yardımcıları sadece yüksek öğütme verimliliğine sahip olmakla kalmaz, aynı zamanda
inorganik malzemeler oldukları için termal olarak kararlıdırlar. DEG ve TIPA gibi organik
maddelere dayanan geleneksel öğütme yardımcıları ile karşılaştırıldığında, katı içerik yarıda olsa
bile, öğütme verimliliği benzerdir ve bu nedenle maliyet yarıya indirilebilir.

Anahtar Kelimeler

Çimento, Öğütme yardımcısı, Alumina bileşiği, Elektrostatik

Kaynakça

• Altun, O., Benzer, H., Toprak, A., Enderle, U. 2015. Utilization of Grinding Aids in Dry Horizontal Stirred Milling. Powder Technology, 286, 610–615.
• Assaad, J.J., Issa, C.A., 2014. Effect of Clinker Grinding Aids on Flow of Cement-Based Materials. Cement and Concrete Research, 63, 1–11
• Choi, H., Lee, W., Kim, D.U., Kumar, S., Kim, S.S., Chung, H.S., Kim, J.H., Ahn, Y.C., 2010. Effect of Grinding Aids on the Grinding Energy Consumed During Grinding of Calcite in a Stirred Ball Mill. Minerals Engineering, 23, 1, 54-57.
• Ding, X.Q., Zhao, S., Ling, J., He, G., 2004. A Survey on Study and Application of Cement Grinding Aids. Materials Review, 18, 61-63.
• Gao, X., Yang, Y., Deng, H., 2011. Utilization of Beet Molasses as a Grinding Aid in Blended Cements. Construction and Building Materials, 25, 9, 3782– 3789.
• Imbabi, M.S., Carrigan C., McKenna, S., 2012. Trends and Developments in Green Cement and Concrete Technology. Int. J. Sus. Built Environ, 1, 2, 194–216.
• Kucharczyk, S., Zajac, M., Deja, J., 2015. The influence of Limestone and Al2O3 Content in the Slag on the Performance of the Composite Cements. Procedia Engineering, 108, 402–409.
• Lee C. Y., Lee, H. K., Lee, K. M., 2003. Strength and Microstructural Characteristics of Chemically Activated Fly Ash Cement Systems. Cement and Concrete Research, 33, 425–431.
• Madlool, N.A., Saidur, R., Hossain, M.S., Rahim, N.A., 2011. A Critical Review on Energy Use and Savings in the Cement Industries. Renewable and Sustainable Energy Reviews, 15, 4, 2042–2060.
• Sabir, B. B., Wild S. Bai, J., 2001. Metakaolin and Calcined Clays as Pozzolans for Concrete: A Review. Cement and Concrete Composites, 23, 6, 441–454.
• Schneider, M., Romer, M., Tschudin, M., Bolio, H. 2011. Sustainable Cement Production – Present and Future. Cement and Concrete Research, 41, 642–650. Sverak, T.S., Baker, C.G.J., Kozdas, O., 2013.
• Efficiency of Grinding Stabilizers in Cement Clinker Processing. Minerals Engineering (43-44), 52–57.
• Teoreanu, I., Guslicov, G., 1999. Mechanisms and Effects of Additives from the Dihydroxy-Compound Class on Portland Cement Grinding. Cement and Concrete Research, 29, 1, 9-15.
• Toprak, N.A., Altun, O., Aydogan, N., Benzer, H., 2014. The Influences and Selection of Grinding Chemicals in Cement Grinding Circuits. Construction and Building Materials, 68, 199–205.