@ARTICLE{Panna_Wojciech_An_2022,
 author={Panna, Wojciech and Mastalska, Joanna and Prewendowski, Sebastian and Wójcik, Łukasz},
 volume={vol. 38},
 number={No 1},
 journal={Gospodarka Surowcami Mineralnymi - Mineral Resources Management},
 pages={137-150},
 howpublished={online},
 year={2022},
 publisher={Komitet Zrównoważonej Gospodarki Surowcami Mineralnymi PAN},
 publisher={Instytut Gospodarki Surowcami Mineralnymi i Energią PAN},
 abstract={This paper deals with the effects of modifications to clay-siliceous raw material from Dylągówka (Dynów foothills, SE Poland), which alter the rheological properties of its water suspensions. The investigations were carried out on three samples collected from various depths of the deposit as they considerably differ in their contents of smectite and other minerals. The samples were either modified with soda or activated with sulphuric (VI) acid and used to prepare their water suspensions with various contents of solids. The suspensions were subject to determinations of viscosity and flow curves. Dependencies of three variables of the suspensions (rheological properties, mineral composition of the solid phase, and the modifications introduced) were assessed on the basis of: the contents of the solid phase in the suspensions required to obtain a viscosity of 1000 mPas; hypothetical, calculated thixotropic energy. These show that the amount of solids in the water suspension required to obtain the required viscosity is considerably lower in samples with higher contents of smectite and in those activated with sodium. In turn, the acid activation that partially alters smectite towards a protonated silica gel decreases the viscosity and thixotropy of the suspensions, which was confirmed in the studies of mid-infrared spectroscopy. The conducted studies provide important information needed in designing the mineral composition of drilling fluids and others applications.},
 type={Article},
 title={An impact of modifications an Dylągówka clay on the rheological properties of its water suspensions},
 URL={http://journals.pan.pl/Content/122694/PDF-MASTER/Panna%20i%20inni.pdf},
 doi={10.24425/gsm.2022.140610},
 keywords={smectite-water suspensions, rheological properties, clay-siliceous rocks, modification of smectites},
}