TY - JOUR
T1 - Mechano-chemical conversion of celestite in highly concentrated sodium carbonate media
AU - Sezer, Raşit
AU - Arslan, Cüneyt
N1 - Publisher Copyright:
© Wroclaw University of Science and Technology.
PY - 2019
Y1 - 2019
N2 - An effect of high-energy ball milling on the mechano-chemical conversion of celestite to strontium carbonate (SrCO 3 ) was studied. A celestite ore was ground by a planetary ball mill in a highly concentrated sodium carbonate (Na 2 CO 3 ) solution. The experimental study was carried out to determine the effects of milling time (15, 30, and 45 min) and Na 2 CO 3 concentration (1, 1.25, and 1.5 M) on the particle size and SrCO 3 percentage of the product. A celestite/ball weight ratio was selected as 1/10 and the volume of carbonate solution was calculated for the stoichiometric amount of sulfate in celestite, as constant. After filtering, washing and drying the precipitated SrCO 3 sludge was analyzed by XRD, SEM-EDS. Powders were leached in HCl solution and analyzed by AAS in order to determine the SrCO 3 amount in the product. A response surface methodology was applied via the Box-Behnken method for the results of particle size and SrCO 3 percentage. Regression model coefficients were 98.61 and 98.14%, which were the results of compatibility as experimentally obtained and predicted by the model, respectively. The maximum amount of SrCO 3 , 96.84% and the minimum particle size, 10.297 μm were obtained with the maximum values of the parameters, 45 min, 1.5 M Na 2 CO 3 , and 450 rpm.
AB - An effect of high-energy ball milling on the mechano-chemical conversion of celestite to strontium carbonate (SrCO 3 ) was studied. A celestite ore was ground by a planetary ball mill in a highly concentrated sodium carbonate (Na 2 CO 3 ) solution. The experimental study was carried out to determine the effects of milling time (15, 30, and 45 min) and Na 2 CO 3 concentration (1, 1.25, and 1.5 M) on the particle size and SrCO 3 percentage of the product. A celestite/ball weight ratio was selected as 1/10 and the volume of carbonate solution was calculated for the stoichiometric amount of sulfate in celestite, as constant. After filtering, washing and drying the precipitated SrCO 3 sludge was analyzed by XRD, SEM-EDS. Powders were leached in HCl solution and analyzed by AAS in order to determine the SrCO 3 amount in the product. A response surface methodology was applied via the Box-Behnken method for the results of particle size and SrCO 3 percentage. Regression model coefficients were 98.61 and 98.14%, which were the results of compatibility as experimentally obtained and predicted by the model, respectively. The maximum amount of SrCO 3 , 96.84% and the minimum particle size, 10.297 μm were obtained with the maximum values of the parameters, 45 min, 1.5 M Na 2 CO 3 , and 450 rpm.
KW - Celestite
KW - Direct conversion
KW - Response surface methodology
KW - Strontium carbonate
KW - Wet milling
UR - http://www.scopus.com/inward/record.url?scp=85062281341&partnerID=8YFLogxK
U2 - 10.5277/ppmp18134
DO - 10.5277/ppmp18134
M3 - Article
AN - SCOPUS:85062281341
SN - 0137-1282
VL - 55
SP - 324
EP - 335
JO - Physicochemical Problems of Mineral Processing
JF - Physicochemical Problems of Mineral Processing
IS - 2
ER -