Influence of Fe2+ ions of ilmenite on its flotability

Kang-nian, Zhong; Cui, Lin

doi:10.1016/0301-7516(87)90070-6

Cited by 40 publications

(3 citation statements)

References 3 publications

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“…Herein, this is one reason for the improvement of ilmenite flotability and an increase in recovery. Studies also show that, as for ilmenite, the content of Fe 3+ on the ilmenite surface has an obvious influence on the ilmenite flotation because the solubility product constant (K sp ) of Fe 3+ is smaller than that of Fe 2+ , suggesting that Fe(OL) 3 products are more stable and Fe 3+ is more inclined to interact with the collector rather than Fe 2+ [21]. During the process of attrition-scrubbing, a fresh surface is produced with a characteristic of high-activity and, because of the oxidation, the conversion trend of Fe 3+ to Fe 2+ is augmented.…”

Section: Discussionmentioning

confidence: 99%

Flotability Improvement of Ilmenite Using Attrition-Scrubbing as a Pretreatment Method

et al. 2017

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Flotation technology of the recovery and utilization of ilmenite from tailings of iron beneficiated in Panzhihua was investigated based on mineralogical study. The results of mineralogical study show that the main occurrence of the valuable mineral are liberated grains of ilmenite. Experimental results of flotation conditions show that attrition-scrubbing raw ores exhibit good flotability with higher recoveries and a slight decrease in grade compared to ores without attrition-scrubbing. Further, open-circuit experiments also prove the superiority of attrition-scrubbing raw ores. The results of closed-circuit experiments show that qualified ilmenite concentrate can be obtained and the yield, grade, and recovery are 22.26%, 47.06%, and 60.73%, respectively. Theoretical study and analysis show that there are two contributions to superior flotability for attrition-scrubbing samples. The first is that the attrition-scrubbing samples can uncover more ferrous ions on the newly-produced fresh ilmenite surface, resulting in the increase in active sites. The other is that in the process of attrition-scrubbing, the transformation of ferrous ions to ferric ions can be promoted.

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Section: Discussionmentioning

confidence: 99%

Flotability Improvement of Ilmenite Using Attrition-Scrubbing as a Pretreatment Method

et al. 2017

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“…A flotação da ilmenita e dos minerais oxidados de Fe pode ser realizada utilizando coletores carboxílicos (ácidos graxos e seus sabões), sulfonatos e aminas (tipicamente em pH acima do ponto isoelétrico do mineral a ser flotado) [6]. Contudo, ilmenita é caracterizada por apresentar baixa flotabilidade, resultando em baixas recuperação (mássica e/ou metalúrgica) [7,8].…”

Section: Introductionunclassified

Avaliação do aproveitamento do titânio contido nos minérios de nióbio da região de Catalão

Cunha¹,

Silva²

2021

Tecnol. Metal. Mater. Min.

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Publicado pela ABM. Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que o trabalho original seja corretamente citado. a ResumoOs minérios de nióbio beneficiados na região de Catalão/GO contêm ilmenita e outros minerais de titânio que se concentram na etapa de flotação de pirocloro, dificultando o processo produtivo e contaminando o produto. A ilmenita, mais abundante e principal mineral-minério de titânio, é matéria-prima para a produção de rutilo sintético, escória de titânio e liga FeTi. Mais de 90% da produção mundial de titânio é direcionada para produção de dióxido de titânio, no entanto o processo aluminotérmico de produção de liga FeTi, possui as vantagens de ser adaptável à concentrados mais pobres, produzir metal livre de U e Th e ser uma tecnologia já bem estabelecida em Catalão para produção do FeNb. O mercado de FeTi existe, inclusive com empresas comercializando no Brasil. A avaliação inicial do aproveitamento da ilmenita dos minérios de nióbio para produção da liga FeTi mostrou potencial para faturamento anual de até US$ 96 milhões, mas são necessárias mais análises de grau de liberação e teor da ilmenita, além de ensaios de concentração em bancada e/ou piloto.

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“…This is due to 538 the conversion of Fe 2+ to Fe 3+ ions which results in the formation of 539 more ferric iron oleate as hydrophobic layer on the surface of 540 ilmenite particles. The greater insolubility of ferric iron oleate 541 (K sp = 10 À29.7 [53]) in comparison to ferrous iron oleate 542 (K sp = 10 À15.5 [53]) increases the bubble-particle attachment time, 543 and improves the flotation recovery of ilmenite. These pretreatment 544 methods also increase the floatability of iron containing gangue 545 minerals.…”

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confidence: 98%

Comparison of microwave irradiation and oxidation roasting as pretreatment methods for modification of ilmenite physicochemical properties

Mehdilo

Irannajad

2016

Journal of Industrial and Engineering Chemistry

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Influence of Fe2+ ions of ilmenite on its flotability

Cited by 40 publications

References 3 publications

Flotability Improvement of Ilmenite Using Attrition-Scrubbing as a Pretreatment Method

Flotability Improvement of Ilmenite Using Attrition-Scrubbing as a Pretreatment Method

Avaliação do aproveitamento do titânio contido nos minérios de nióbio da região de Catalão

Comparison of microwave irradiation and oxidation roasting as pretreatment methods for modification of ilmenite physicochemical properties

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