The effect of pH modifier on the flotation of celestite with sodium oleate and sodium metasilicate
Abstract This paper studies the influence of two pH modifiers, namely sodium hydroxide (NaOH) and sodium carbonate (Na 2 CO 3 ), on the flotation of celestite ore using sodium oleate as the collector and sodium silicate (Na 2 SiO 3 ) as the depressant. The use of Na 2 CO 3 provides the best results for the concentration of celestite, under the same experimental conditions.
The effect of pH modifier on the flotation of celestite with sodium oleate and quebracho
Abstract This paper studies the influence of two pH modifiers, namely sodium hydroxide (NaOH) and sodium carbonate (Na2CO3), on the flotation of celestite ore using sodium oleate as the collector and quebracho as the depressant. Results show that, for the same experimental conditions (pH = 10.5, sodium oleate = 1500 g/Tm and low quebracho concentrations), the use of Na2CO3 provides enhanced recovery rates and concentration of celestite in the floated mineral, compared with NaOH.
Researches on Structural Factor Involvement in Oral Tribology
This study is focused on two ceramic materials, D.SING (Ivoclar) and VM13 (emphasis the VITA TN), frequently used in restorative dentistry practice and it comes to complete a full set of results obtained by the authors over several years of research on oral tribology with main influence on oral health. In this way there are involved more specific structural aspects of dental restorative ceramic materials quality as is shown in [1].