Pilot Scale Direct Flotation of a Phosphate Ore with Silicate-Carbonate Gangue

Albuquerque, Rodrigo Oscar de; Peres, Antônio Eduardo Clark; Aquino, José Aury de; Praes, Plínio Eduardo; Pereira, Carlos Alberto

doi:10.1016/j.proeng.2012.09.452

Cited by 13 publications

(2 citation statements)

References 4 publications

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“…In beneficiation, we find various attempts to increase the grade of the marketable ore (without increasing the cut-off grade) and to raise recovery levels for sedimentary as well as igneous ores. The latter was addressed by Albuquerque et al [65] who tested a flotation reagent scheme consisting of cornstarch and coconut oil. They found that both were effective for the separation of apatite from contaminants (calcites and silicates).…”

Section: The Technological and Process Perspective (Technosphere)mentioning

confidence: 99%

Striving Toward a Circular Economy for Phosphorus: The Role of Phosphate Rock Mining

Geißler

Hermann²,

Mew

et al. 2018

Minerals

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As an element, phosphorus (P) is one of a kind. While it is essential for all life on Earth, phosphorus is neither substitutable nor infinite especially in terms of highly concentrated phosphate rock deposits. Society as a whole—and key stakeholders in particular—must build on and extend the idea of a linear system that begins with exploration, continues with extraction and processing, and ends with the application of fertilizers, by applying mechanisms of circularity. The efficient and sustainable utilization of P including intra-generational and intergenerational fairness requires the recognition of its dissipative structure as an important first step. With its Manifesto for a Resource-Efficient Europe, the European Commission acknowledged the inevitability of the transition toward a regenerative Circular Economy (CE). The concept of a CE evolves around the avoidance of losses, which can be found all along the P supply chain in varying degrees of magnitude and leads to total nutrient-use efficiencies as low as 5% to 10%. This makes P a prime target for moving toward a circular economy. While common state-of-the-art work addresses mostly the loop (i.e., production, use, collection, and recycling) itself, we are discussing the current role of raw materials “feeding” the loop with respect to the mining phase. From a resilience perspective, the aim must be to keep every P atom flowing and circulating within our economy for as long as possible. Hereby, every measure needs to be considered under the principle of proportionality in terms of sustainable development. Therefore, changes to the current approach in the form of multidimensional innovation (e.g., products, processes, and structures) must be considered from various perspectives including technological, geological, and economic aspects. The economic framework conditions, in particular, determine the cut-off between valuable product and “waste”. We build our arguments on the “Phosphate Rock Mining–Innovation Nexus” and illustrate potential best-practice examples.

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Section: The Technological and Process Perspective (Technosphere)mentioning

confidence: 99%

Striving Toward a Circular Economy for Phosphorus: The Role of Phosphate Rock Mining

Geißler

Hermann²,

Mew

et al. 2018

Minerals

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“…Calcite is an important mineral of sedimentary rocks (Morse and Mackenzie, 1990). However, it can be intergrown, as a major gangue mineral, with valuable minerals in the ore deposits, such as fluorine (Albuquerque et al, 2012;Antti and Forssberg, 1989;Gao et al, 2018;Hiçyìlmaz et al, 1993;Schubert et al, 1990). Thus, calcite is known as the least one and must be separated from fluorine mineral.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of calcite for tannic acid adsorption: Optimization by response surface methodology coupled by Box-Cox transformation procedure

Tangarfa¹,

Hassani²,

Alaoui³

2021

Physicochem. Probl. Miner. Process.

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Calcite depression is the most effective physicochemical process to valorize fluorine mineral. This process is achieved by adsorption of tannic acid, as the commonly used reagent, onto calcite. Adsorption investigation is very important in mineral processing. The present work focuses on optimization of physicochemical parameters of tannic acid adsorption onto calcite. Experimental study is carried out by a response surface methodology based on Box-Behnken design. Obtained results are exploited to develop a statistical model. Analysis of variance and residuals are performed to check the significance of tested models. Among these models, Cox-Box model predicts very well the obtained experimental data. This model shows that initial tannic acid concentration and solution pH as well as their interactions are the most significant parameters. Optimal conditions are achieved using the obtained statistical model. The present investigation is an important preliminary step to better understand calcite flotation behavior using tannic acid as a depressant.

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Direct flotation of low-grade Moroccan phosphate ores: a preliminary micro-flotation study to develop new beneficiation routes

et al. 2020

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Pilot Scale Direct Flotation of a Phosphate Ore with Silicate-Carbonate Gangue

Cited by 13 publications

References 4 publications

Striving Toward a Circular Economy for Phosphorus: The Role of Phosphate Rock Mining

Striving Toward a Circular Economy for Phosphorus: The Role of Phosphate Rock Mining

Preparation and characterization of calcite for tannic acid adsorption: Optimization by response surface methodology coupled by Box-Cox transformation procedure

Direct flotation of low-grade Moroccan phosphate ores: a preliminary micro-flotation study to develop new beneficiation routes

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