Stable synthetic rhodochrosite and a method for the production thereof
AssigneePrince Minerals, Inc.
InventorsJean-Bruno R. B. Soupart, Christian A. A. De Vos
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Abstract
A stable rhodochrosite comprising manganese carbonate (MnCO3) and 0.03-0.3 wt % of an anion or ligand of phosphoric acid (H3PO4), pyrophosphoric acid (H4P2O7), an organic acid, or a salt of such acids, or 0.03-0.3 wt % of a mixture of such anions and/or ligands. Also, a method of producing stable rhodochrosite comprising manganese carbonate (MnCO3) in which a rhodochrosite comprising manganese carbonate (MnCO3) is treated by applying an aqueous treatment solution of phosphoric acid (H3PO4), pyrophosphoric acid (H4P2O7), sulfuric acid (H2SO4), an organic acid, or a salt of such acids, or a mixture thereof and the treated rhodochrosite is dried to produce stable rhodochrosite.
Claims20
A stable rhodochrosite comprising manganese carbonate (MnCO3) and 0.03-0.3 wt % of an anion or ligand of phosphoric acid (H3PO4), pyrophosphoric acid (H4P2O7), an organic acid, or a salt of such acids, or 0.03-0.3 wt % of a mixture of such anions and/or ligands.
A method of producing stable rhodochrosite comprising manganese carbonate (MnCO3), the method comprising:
- providing a rhodochrosite comprising manganese carbonate (MnCO3);
- treating the rhodochrosite by applying an aqueous treatment solution of phosphoric acid (H3PO4), pyrophosphoric acid (H4P2O7), an organic acid selected from the group consisting of citric acid (C6H8O7), oxalic acid (C2H2O4), acetic acid (C2H4O2), tartaric acid (C4H6O6), and/or ethylenediaminetetraacetic acid (C10H16N2O8), or a salt of such acids, or a mixture thereof to the provided rhodochrosite to form a treated rhodochrosite;
- and
- drying the treated rhodochrosite to produce stable rhodochrosite.
A method of producing stable rhodochrosite comprising manganese carbonate (MnCO3), the method comprising:
- providing a rhodochrosite comprising manganese carbonate (MnCO3);
- treating the rhodochrosite by applying an aqueous treatment solution of phosphoric acid (H3PO4), pyrophosphoric acid (H4P2O7), an organic acid, or a salt of such acids, or a mixture thereof to the provided rhodochrosite to form a treated rhodochrosite;
- and
- drying the treated rhodochrosite to produce stable rhodochrosite,
- wherein the stable rhodochrosite comprises 0.03-0.3 wt % of an anion or ligand of the phosphoric acid (H3PO4), pyrophosphoric acid (H4P2O7), organic acid, or salt of such acids.
Dependencies are inferred from the claim text.