Dissolution kinetics of phosphate ore in acidic solutions

Sanjian Ma; E. T.M.J. Martynowicz; G. J. Witkamp; G. M. van Rosmalen

Dissolution kinetics of phosphate ore in acidic solutions

Sanjian Ma^*, E. T.M.J. Martynowicz, G. J. Witkamp, G. M. van Rosmalen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The dissolution kinetics of Florida and Jordan phosphate ore was studied in diluted nitric acid (0.2, 0.5, 1.0 mol · L^-1), and in phosphoric acid (55 wt% H₃PO₄) aqueous solutions. It was found that the hydrogen ions concentration is a controlling factor, but the calcium ions concentration can not affect the dissolution rate in the range of 0.0 and 2.0 wt% Ca²⁺. The effects of temperature, stirring intensity and the size of ore particles were also investigated. The transfer of hydrogen ion depends on the diffusion, while the calcium ions transfer is assumed to be depended on mechanically stripping. The shrinking core model with hydrogen ions diffusion control match the experimental results.

Original language	English (US)
Pages (from-to)	72-81
Number of pages	10
Journal	Chinese Journal of Chemical Engineering
Volume	2
Issue number	2
State	Published - Jun 1994
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Biochemistry
Environmental Engineering

Cite this

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title = "Dissolution kinetics of phosphate ore in acidic solutions",

abstract = "The dissolution kinetics of Florida and Jordan phosphate ore was studied in diluted nitric acid (0.2, 0.5, 1.0 mol · L-1), and in phosphoric acid (55 wt% H3PO4) aqueous solutions. It was found that the hydrogen ions concentration is a controlling factor, but the calcium ions concentration can not affect the dissolution rate in the range of 0.0 and 2.0 wt% Ca2+. The effects of temperature, stirring intensity and the size of ore particles were also investigated. The transfer of hydrogen ion depends on the diffusion, while the calcium ions transfer is assumed to be depended on mechanically stripping. The shrinking core model with hydrogen ions diffusion control match the experimental results.",

author = "Sanjian Ma and Martynowicz, {E. T.M.J.} and Witkamp, {G. J.} and {van Rosmalen}, {G. M.}",

year = "1994",

month = jun,

language = "English (US)",

volume = "2",

pages = "72--81",

journal = "Chinese Journal of Chemical Engineering",

issn = "1004-9541",

publisher = "Materials China",

number = "2",

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TY - JOUR

T1 - Dissolution kinetics of phosphate ore in acidic solutions

AU - Ma, Sanjian

AU - Martynowicz, E. T.M.J.

AU - Witkamp, G. J.

AU - van Rosmalen, G. M.

PY - 1994/6

Y1 - 1994/6

N2 - The dissolution kinetics of Florida and Jordan phosphate ore was studied in diluted nitric acid (0.2, 0.5, 1.0 mol · L-1), and in phosphoric acid (55 wt% H3PO4) aqueous solutions. It was found that the hydrogen ions concentration is a controlling factor, but the calcium ions concentration can not affect the dissolution rate in the range of 0.0 and 2.0 wt% Ca2+. The effects of temperature, stirring intensity and the size of ore particles were also investigated. The transfer of hydrogen ion depends on the diffusion, while the calcium ions transfer is assumed to be depended on mechanically stripping. The shrinking core model with hydrogen ions diffusion control match the experimental results.

AB - The dissolution kinetics of Florida and Jordan phosphate ore was studied in diluted nitric acid (0.2, 0.5, 1.0 mol · L-1), and in phosphoric acid (55 wt% H3PO4) aqueous solutions. It was found that the hydrogen ions concentration is a controlling factor, but the calcium ions concentration can not affect the dissolution rate in the range of 0.0 and 2.0 wt% Ca2+. The effects of temperature, stirring intensity and the size of ore particles were also investigated. The transfer of hydrogen ion depends on the diffusion, while the calcium ions transfer is assumed to be depended on mechanically stripping. The shrinking core model with hydrogen ions diffusion control match the experimental results.

UR - http://www.scopus.com/inward/record.url?scp=0028459777&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0028459777

SN - 1004-9541

VL - 2

SP - 72

EP - 81

JO - Chinese Journal of Chemical Engineering

JF - Chinese Journal of Chemical Engineering

IS - 2

ER -

Dissolution kinetics of phosphate ore in acidic solutions

Abstract

ASJC Scopus subject areas

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