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Treatment of Phosphorus-Containing Raw Materials with Alkaline Solutions

  • Inorganic Synthesis and Industrial Inorganic Chemistry
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Abstract

The work describes a method for recovery of phosphorus compounds from phosphorus-containing raw materials. The possibility of autoclave leaching of phosphorus from phosphorite in the form of a solution of sodium phosphates with an alkaline solution was experimentally tested. The optimal process parameters were determined (temperature 250–300°C, leaching time 3 h, NaOH concentration 150–300 kg m–3), under which calcium silicate with a unique nano-sized needle-shaped structure, widely used in many industries, is formed in the solid residue. The research results make it possible to involve raw materials with low phosphorus content in waste-free processing.

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ACKNOWLEDGMENTS

The authors express their gratitude to the company STG LOGISTIC LLC for providing the material for researching.

Funding

The work was carried out in accordance with the state assignment and research plans of Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences (no. AAAA-A19-119031890028-0).

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Authors and Affiliations

  1. Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, 620108, Yekaterinburg, Russia

    V. M. Skachkov, L. A. Pasechnik & I. S. Medyankina

Authors
  1. V. M. Skachkov
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  2. L. A. Pasechnik
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  3. I. S. Medyankina
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Correspondence to V. M. Skachkov.

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Translated from Zhurnal Prikladnoi Khimii, No. 3, pp. 264–268, August, 2023 https://doi.org/10.31857/S0044461823030040

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Skachkov, V.M., Pasechnik, L.A. & Medyankina, I.S. Treatment of Phosphorus-Containing Raw Materials with Alkaline Solutions. Russ J Appl Chem 96, 292–296 (2023). https://doi.org/10.1134/S1070427223030047

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  • DOI: https://doi.org/10.1134/S1070427223030047

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