NDLI: Effectiveness of sodium silicate as gangue depressants in iron ore slimes flotation

Content Provider	Springer Nature Link
Author	Rao, Danda Srinivas VijayaKumar, Tadiparthi Venkata Rao, Sripada Subba Prabhakar, Swarna Raju, Guntamadugu Bhaskar
Copyright Year	2011
Abstract	The recovery of iron from the screw classifier overflow slimes by direct flotation was studied. The relative effectiveness of sodium silicates with different silica-to-soda mole ratios as depressants for silica and silicate bearing minerals was investigated. Silica-to-soda mole ratio and silicate dosage were found to have significant effect on the separation efficiency. The results show that an increase of Fe content in the concentrate is observed with concomitant reduction in SiO$_{2}$ and Al$_{2}$O$_{3}$ levels when a particular type of sodium silicate at a proper dosage is used. The concentrate of 58.89wt% Fe, 4.68wt% SiO$_{2}$, and 5.28wt% Al$_{2}$O$_{3}$ with the weight recovery of 38.74% and the metal recovery of 41.13% can be obtained from the iron ore slimes with 54.44wt% Fe, 6.72wt% SiO$_{2}$, and 6.80wt% Al$_{2}$O$_{3}$, when Na$_{2}$SiO$_{3}$ with a silica-to-soda mole ratio of 2.19 is used as a depressant at a feed rate of 0.2 kg/t.
Starting Page	515
Ending Page	522
Page Count	8
File Format	PDF
ISSN	16744799
Journal	International Journal of Minerals, Metallurgy, and Materials
Volume Number	18
Issue Number	5
e-ISSN	1869103X
Language	English
Publisher	University of Science and Technology Beijing
Publisher Date	2011-10-04
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	iron ores sodium silicate depressants flotation Materials Science Metallic Materials Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Geochemistry and Petrology Mechanical Engineering

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