PDF

Effect of sodium silicate on the reverse anionic flotation of a siliceous–phosphorus iron ore

Arash Tohry, Ali Dehghani

2016enflotationiron oresilicatephosphorussodium

Abstract

Language:

In the flotation system of Chador Malu iron processing plant (Iran), the apatite is floated with fatty acid based collectors. Sodium silicate is also used as iron oxides depressant. This study aimed to find an effective reagent combination to reduce the silica and phosphorous contents of iron concentrate. Batch flotation tests were carried out to investigate the influence of sodium silicate dosage, modulus and addition of Ca++ ions, on the separation selectivity of phosphorous and siliceous gangue minerals from iron oxides. The feed sample, with 57.20% Fe, 6.42% SiO2 and 0.748% P was mainly composed of haematite and magnetite and the main gangue minerals were apatite and quartz. The results showed that sodium silicate performed better as a depressant of iron oxide, but had little effect on silica flotation in the apatite–iron oxide–silica flotation system. Using sodium silicate of modulus 2.5 at a concentration of 800 g/t, pH value of 10, and conditioning time of 10 min achieved an effective separation of apatite from iron oxides, while silica removal (<35%) was still poor. Addition of hydrous calcium chloride enhanced the separation selectivity of quartz and apatite from the iron oxides. Applying a silicate–CaCl2 mixture with Me/Si ratio of 0.4 resulted in a concentration with acceptable grades of Fe (67%), SiO2 (1.5%), and P (0.034%).

Download

Cite This Work

@article{a535863f-2b76-4400-92e3-c90e3175b280,
  title={Effect of sodium silicate on the reverse anionic flotation of a siliceous–phosphorus iron ore},
  author={Arash Tohry and Ali Dehghani},
  year={2016},
  language={en}
}
TY  - JOUR
TI  - Effect of sodium silicate on the reverse anionic flotation of a siliceous–phosphorus iron ore
AU  - Arash Tohry
AU  - Ali Dehghani
PY  - 2016
LA  - en
ER  -

Similar Items

Extractive Metallurgy of Copper, Fifth Edition Mark E. Schlesinger, Matthew J. King, Kathryn C. Sole, ( WeLib.org )

Mark E. Schlesinger, Matthew J. King

This book presents a comprehensive overview of the principles and practices of copper extraction metallurgy. The objective is to provide both a theore

2026enPDF

Proceedings of the Metallurgical Society of the Canadian Tumilty, J.A. ( WeLib.org )

2026enPDF

Extraction of PGMs from Low-grade Oxide Mineral Deposits

Cleophace Ngoie Mpinga

The thesis investigates alternative extraction strategies for platinum group metals (PGMs) from low-grade, high-chromium oxidized ores, which are incr

2018enPDF

THE EFFECT OF COOLING RATE OF SLAG FROM PRIMARY COPPER PRODUCTION IN THE VALORIZATION OF COPPER IN THE FLOTATION PROCESS

Aleksandar Mihajlović, Željko Kamberović, Marija Korać, Milorad Gavrilovski, Nikola Jovanović

Technological procedure of slow cooling slag from primary copper production is applied in the purpose of copper recovery in the level of 98.5% to blis

2015enPDF

Plant auditing: a powerful tool for improving metallurgical plant performance

Deepak Malhotra

This work discusses the essential components of a rigorous auditing process aimed at enhancing metallurgical plant performance. The objective is to id

2015enPDF

Alkalimetall-Stannid-Silicate und -Germanate: ‘Doppelsalze’ mit dem Zintl-Anion [Sn4]4

Constantin Hoch, Caroline Röhr

Die Kristallstrukturen der T etrelid-T etrelate A12[Sn4]2[GeO4] und Cs20[Sn4]2[SiO4]3 wurden im Rahmen dieser Studie untersucht. Diese Verbindungen, s

2002dePDF