|
|||||
|
|
Study of celestite flotation efficiency using sodium dodecyl sulfonate collector: factorial experiment and statistical analysis of data |
|
| Authors: | A Martínez-L A Uribe S F R Carrillo P J Coreo A J C Ortiz |
| Institution: | a Universidad Autónoma de Coahuila, Blvd. V. Carranza and Ing. José Cárdenas s/n, A.P. 935, C.P. 25000, Saltillo, Coahuila, Mexico;b CINVESTAV-IPN Unidad Saltillo, Ctra. Saltillo-Monterrey, km. 13, A.P. 663, C.P. 25000, Saltillo, Coahuila, Mexico;c Universidad Autónoma del Estado de Hidalgo, Ctra. Pachuca-Tulancingo, km. 4, Cd. Universitaria, Pachuca, Hidalgo, Mexico |
| Abstract: | Flotation tests of synthetic mixtures of celestite (SrSO4) and calcite (CaCO3) minerals using sodium dodecyl sulfonate as collector were carried out using a factorial experimental design 23. The independent experimental variables included celestite grade in the feed (50% and 90% SrSO4), conditioning pH (6.5 and 9) and sodium silicate depressant concentration (10−5 and 10−3 M). All experiments were performed at a constant collector concentration (10−4 M) and conditioning time of 15 min. The response variables were recovery and grade of SrSO4 in the concentrate.The factors that had the greatest effect on the grade and recovery of celestite were the celestite grade in the feed (L) and the depressant concentration (C); also the combination of these factors significantly affected the response variables. The highest celestite yield (96% recovery, 98% grade) was obtained when a 90% of celestite grade in the feed was used. |
| Keywords: | factorial design calcite celestite flotation sodium dodecyl sulfonate |
| 本文献已被 ScienceDirect 等数据库收录！ | |