Research Information System
Madencilik, vol.55, no.4, pp.3-13, 2016 (Scopus)
In this study; modeling and optimization of rougher flotation parameters of Zonguldak fine coal (particle size; -0.5 mm, ash content; 46.10 %) was investigated by using response surface method. Central composite rotatable design was employed to evaluate the influence of independent variables; kerosene dosage (x1), methyl isobutyl carbinol (MIBC) dosage (x2), sodium silicate dosage (x3) and the solid ratio (x4) on the dependent variables; the weight of the rougher concentrate (y1), the ash content of the rougher concentrate (y2), and the combustible yield (y3). Model equations were developed for each dependent variables and then results were evaluated by using analysis of variance. The accuracy and validity of the models were discussed and three-dimensional graphics were plotted. The optimum conditions were calculated by using Design Expert 8.0.7.1 software program. It was determined rougher concentrate could be obtained with the weight of 64.54 %, the ash content of 23.88 % and the combustible yield of 91.78 %. These results were taken with the help of parameters; 200 g/t diesel oil, 125 g/t MIBC, 1846 g/t sodium silicate and 10 % solid ratio.