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http://nopr.niscpr.res.in/handle/123456789/29970| Title: | Dissolution of ilmenite by roasting with LPG-pyrolysed products and subsequent leaching |
| Authors: | Biswas, R K Islam, M F Habib, M A |
| Issue Date: | Oct-1994 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Ilmenite has been leached with 6 g eq dm-3 hydrochloric and/or sulphuric acid after being roasted at (700±15)0 C; with LPG flow rate of 230 cm3 min-1 for 75 min at a partical size of 63-125 µm. The maximum weight percentages of metals dissolved from the roasted mass are ~ 85% titanium and 52.1% iron with 6 g eq dm-3 hydrochloric acid whereas it is 52.3% titanium and 60.8% iron with 6 g eq dm-3 sulphuric acid system. The optimum leaching with hydrochloric acid solution requires a higher acid concentration then 6 g eq dm-3 1100 C temperature, solid to liquid phase ratio (S/L) of 0.02 kg dm-3 and a pulp agitation speed of 350 rpm for 5h. Identical concentration of sulpuric acid always gives poorer dissolution. Comparison of the X-ray powder diffraction patterns (XRD) of ilmenite and the roasted mass suggests certain chemical/physical changes occurring during treatment. |
| Page(s): | 267-272 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Appears in Collections: | IJEMS Vol.01(5) [October 1994] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJEMS 1(5) 267-272.pdf | 515.07 kB | Adobe PDF | View/Open |
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