Upgrading tantalum and niobium oxides content in Bangka tin slag with double leaching

Quality in Research: International Symposium on Materials, Metallurgy, and Chemical Engineering

材料科学;冶金学;化学工业

Soedarsono, J.W.^1 ; Permana, S.^1 ; Hutauruk, J.K.^1 ; Adhyputra, R.^1 ; Rustandi, A.^1 ; Maksum, A.^1,2 ; Widana, K.S.^3 ; Trinopiawan, K.^3 ; Anggraini, M.^3

Center of Minerals Processing and Corrosion Research, Department of Metallurgical and Materials Engineering, Universitas Indonesia, Depok

16424, Indonesia^1

Department of Mechanical Engineering, Politeknik Negeri Jakarta, Depok

16425, Indonesia^2

Nuclear Energy Agency Indonesia, Pasar jum'At, Jakarta

12440, Indonesia^3

关键词: Electronic product;    Electronics fields;    Leaching experiments;    Niobium pentoxide;    Secondary sources;    Solvent concentration;    Tantalum pentoxide;    X ray fluorescence;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/316/1/012052/pdf
DOI  :  10.1088/1757-899X/316/1/012052

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Tantalum has become one of the 14 types of critical materials where the level of its availability is assumed as the midterm critical metal. Benefits of the element tantalum in the electronics field increased the deficit balance of supply / demand, as more variations of electronic products developed. The tantalum experts calculated the level of availability until 2020. Base on the previous studies, tin slag is a secondary source of tantalum and niobium. This study uses tin slag from Bangka, Indonesia, abbreviated, Bangka Tin Slag (BTS). BTS was roasted, water quenched and sieved, abbreviated BTS-RQS.BTS was roasted, water quenched and sieved, abbreviated BTS-RQS.BTS-RQS was roasted at a temperature 700C given sample code BTS-R700QS, while roasted at 800°C given sample code BTS-R800QS.A variable leaching experiment on BTS-R700QS was solvent concentration variable and on BTS-R800QS was time variable. The entire residue was characterized by X-Ray Fluorescence (XRF), and the optimum results are on the BTS-R800QS leaching into 5 M NaOH for 20 min followed by 5M HCl for 50 min, with content of Ta2O5 and Nb2O51.56% and 1.11%, respectively. The result of XRF measurement showed was the increasing of TNO content due to the increasing solvent concentration and time of acid leaching. The discussion of thermodynamics this study used was HSC Chemistry 6 as a supporting data.