Preparing Strontium Carbonate with Celestite Concentrate by Agglomeration-reduction Roasting Process
Preparation strontium carbonate with celestite concentrate by flotation is studied by agglomeration-reduction roasting process. It is shown that, the drop strength of green pellet is greater than 4 times·(0.5m)-1 under the bailing conditions of moisture of 9% and time of 18～20min. Lignin xanthate obviously improves the ballability of the celestite concentrate due to the increase of surface hydrophilicity, therefore, the bailing rate is increased, as well as green ball strength. The drop strength of 7 times·(0.5m)-1 can be obtained when the lignin xanthate dosage is 0.5%～1%. Reduction roasting with anthracite shows that the SrSO4 conversion is 82%～83% for celestite concentrate pellet, under the optimal conditions of roasting temperature of 1100～1150℃ and time of 30min, and it is 10% higher than conversion of celestite lump under the same conditions. The strontium carbonate are prepared after roasted pellets are leached, purified and carbonated, and the SrCO3 content is higher than 97%, while the content of CaCO3 is less than 0.3%.
Celestite concentrate Strontium carbonate Agglomeration Reduction roasting
G. H. Li T. Jiang M. D. Liu Y. B. Zhang
School of Minerals Processing and Bioengineering, Central South University, Changsha, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
2208-2214
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）