Can carboxymethyl cellulose be used as a selective flocculant for beneficiating alumina-rich iron ore slimes? A density functional theory and experimental study

Kumar, Dharmendr; Jain, Vinay; Rai, Beena

doi:10.1016/j.mineng.2018.02.020

Cited by 32 publications

(11 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was found that the combination of classification and reverse cationic flotation using monamine as collector could achieve a high grade iron concentrate having 64.5% Fe, 2.2% Al 2 O 3 , while the Fe recovery was only 28.7% [84]. Kumar, et al [85] reported that selective flocculation for alumina-rich iron ore slimes using carboxymethyl cellulose as flocculant could facilitate the separation of gibbsite from hematite. The experimental results show that a final concentrate of 64.4% Fe, 4.2% Al 2 O 3 , and 1.9% silica with a yield of 56% could be obtained from a feed containing 56.5% Fe, 7.0% alumina, and 4.9% silica [85].…”

Section: Alumina-bearing Mineralsmentioning

confidence: 99%

“…Kumar, et al [85] reported that selective flocculation for alumina-rich iron ore slimes using carboxymethyl cellulose as flocculant could facilitate the separation of gibbsite from hematite. The experimental results show that a final concentrate of 64.4% Fe, 4.2% Al 2 O 3 , and 1.9% silica with a yield of 56% could be obtained from a feed containing 56.5% Fe, 7.0% alumina, and 4.9% silica [85].…”

Section: Alumina-bearing Mineralsmentioning

confidence: 99%

See 1 more Smart Citation

Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review

et al. 2020

View full text Add to dashboard Cite

Froth flotation has been widely used in upgrading iron ores. Iron ore flotation can be performed in two technical routes: direct flotation of iron oxides and reverse flotation of gangue minerals with depression of iron oxides. Nowadays, reverse flotation is the most commonly used route in iron ore flotation. This review is focused on the reverse flotation of iron ores, consisting of reverse cationic flotation and reverse anionic flotation. It covers different types of collecting agents used in reverse iron ore flotation, the surface characteristics of minerals commonly present in iron ores (e.g., iron oxides, quartz, alumina-bearing minerals, phosphorus-bearing minerals, iron-bearing carbonates, and iron-bearing silicates), and the adsorption mechanisms of the collecting agents at the mineral surface. The implications of collecting agent–mineral interactions for improving iron ore flotation are discussed.

show abstract

Section: Alumina-bearing Mineralsmentioning

confidence: 99%

Section: Alumina-bearing Mineralsmentioning

confidence: 99%

Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The quality of iron ore depends on the percentage of iron and impurity content. The lower‐grade iron ores (alumina and other impurities rich) are not desirable for blast furnace chemistry 2,3 . During mining and mineral processing of iron ore, huge quantity of ultrafine particles is generated (particle size <45 micron), termed as slime, which consists of a considerable amount of iron (50–57% by weight) are usually dumped 3 .…”

Section: Introductionmentioning

confidence: 99%

“…The most common method for the beneficiation of low‐quality iron ore or slimes is dispersion in aqueous media followed by selective flocculation of hematite 1‐5 . Efficient dispersion of low‐quality iron ore separates hematite and impure particles from each other and allowed to disperse both of them.…”

Section: Introductionmentioning

confidence: 99%

Development of a highly efficient selective flocculant based on functionalized β‐cyclodextrin toward beneficiation of low‐quality iron ore

Patra

Mukherjee

et al. 2021

Polymers for Advanced Techs

View full text Add to dashboard Cite

The present work is focused on the development of a novel flocculant for selective flocculation of iron ore using functionalized β‐cyclodextrin (β CD). β CD has been modified by esterification reaction with methacrylic anhydride (MAh) to form β CD methacrylate (CD‐Meth). After that, a three‐dimensional polymeric network structure has been prepared by free radical polymerization of CD‐Meth with copolymeric chain of poly (acrylamide‐co‐acrylic acid) through grafting. The synthesized material has been characterized in detail. It has been found that the developed material has promising selectivity toward the hematite particles and also demonstrates faster settling of hematite particles. The developed material is found to be superior in all aspects than that of conventional selective flocculant used for iron ore beneficiation (i.e., starch).

show abstract

“…In this case, carboxymethyl cellulose (CMC) is tentatively added to help depress fine gangue minerals and improve the flotation performance. CMC is one of important organic macromolecular depressants and it most widely used to depress gangue minerals that contain calcium and magnesium in the flotation process [10][11][12]. Its possible interaction mechanisms between polymers and the talc surface involve one or more of chemical, electrostatic, hydrogen, and hydrophobic bonding contributions.…”

Section: Introductionmentioning

confidence: 99%

A Case Study of Enhanced Sulfidization Flotation of Lead Oxide Ore: Influence of Depressants

et al. 2020

View full text Add to dashboard Cite

The refractory lead oxide ore has become an important source of lead metal with the continuous depletion of lead sulfide minerals. Lead oxide ore is of poor floatability and there are few cases to concentrate it successfully. In this study, the sulfidization-xanthate flotation method is applied for the beneficiation of lead oxide ore in Yunnan Province (China) with sodium hexametaphosphate and carboxymethyl cellulose as depressant. Chemical analysis and phase analysis was performed to explore the physicochemical property of raw ore, which provides a research basis for process design and operational control. The main influencing factors during the process, including grinding fineness, reagent types, and dosage, etc., have been studied through flotation tests. Zeta potential measurements and Fourier transfer-infrared spectrometry (FTIR) analysis were conducted to reveal the function mechanism of the reagents. Based on the determined experimental conditions, open circuit tests and closed circuit tests with one stage rougher, three-stage scavenger, and two-stage cleaner flotation, were carried out with the run-of-mine ore with a lead grade of 4.57%. Through close circuit bench test, the lead concentrate with a lead grade of 64.08% and recovery of 92.30% was obtained. This study is of special value, as it provides referencing significance for economically exploiting lead oxide ore.

show abstract

Can carboxymethyl cellulose be used as a selective flocculant for beneficiating alumina-rich iron ore slimes? A density functional theory and experimental study

Cited by 32 publications

References 23 publications

Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review

Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review

Development of a highly efficient selective flocculant based on functionalized β‐cyclodextrin toward beneficiation of low‐quality iron ore

A Case Study of Enhanced Sulfidization Flotation of Lead Oxide Ore: Influence of Depressants

Contact Info

Product

Resources

About