US3452867A - Treatment of sylvinite ores - Google Patents

Treatment of sylvinite ores Download PDF

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Publication number
US3452867A
US3452867A US626943A US3452867DA US3452867A US 3452867 A US3452867 A US 3452867A US 626943 A US626943 A US 626943A US 3452867D A US3452867D A US 3452867DA US 3452867 A US3452867 A US 3452867A
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United States
Prior art keywords
copolymer
kcl
ore
acrylamide
ores
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Expired - Lifetime
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US626943A
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English (en)
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William T Bishop
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Hercules LLC
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Hercules LLC
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Publication date
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/016—Macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/01—Organic compounds containing nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/012—Organic compounds containing sulfur
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/02—Collectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; Specified applications
    • B03D2203/02—Ores
    • B03D2203/04—Non-sulfide ores
    • B03D2203/10—Potassium ores

Definitions

  • the improvement comprises carrying (methoxyl polyethylene glycol of approximately 550 out the separation in the presence of an acrylamide-beta molecular weigh
  • the amounts of materials Used in methacrylyloxyethyltrimethylammonium methyl sulfate these runs were per ton of the partially deslimed ore on copolymer which copolymer serves to minimize the ada dry weight basis.
  • 0.5 pound coal tar creosote (Barverse effect of the clay on the mineral collector. rett No. 634) was added and the mixing continued for 5 minutes.
  • amine collector distilled hydrogenated tallow amine acetate, commercially available as The present invention relates to a process of treating Armac HTD) was added and the mixing continued for sylvinite ores, and more particularly to a flotation proc- 2 minutes.
  • the resulting ore pulp was then transferred to ess of recovering sylvite (KCl) from sylvinite ores.
  • KCl sylvite
  • KCl sylvite
  • KCl sylvite
  • KCl sylvite
  • a flotation cell, and 0.07 pound methylisobutyl carbinol Sylvinite ores contain various amounts of KCl and added prior to floating.
  • the KCl concentrate in the froth NaCl (halite). Typical of such sylvinite ores are those that formed was removed from the surface of the pulp in the Carlsbad district of New Mexico. Sylvinite ores liquor. also contain
  • Example 2 used as SEPARAN NP an acrylamide-based anionic slime inhibitor available commercially 10.
  • Froth flotation processes are used commercially to recover KCl from the ores by flotating the KCl from the NaCl.
  • finely ground ore is mixed with a saturated solution of the soluble constituents (usually insoluble constituents such as e.g. clays are also present) of the ore and various flotation (collection) and auxiliary agents are added.
  • the collection agent causes the separation of the KCl from the ore.
  • the clay adsorbs a substantial amount of the mineral collector and thus seriously interferes with the separation process.
  • it is conventional practice to employ a mechanical desliming step still enough clay remains to substantially hinder the separation process.
  • the present invention is not limited thereto but includes any materials which interfere with the performance of the mineral collector, which interference the copolymer of the present invention lessens.
  • These objectionable slime-forming materials are sometimes referred to in the art as insoluble clay-like minerals.
  • the present invention is described herein for the most part with reference to a flotation process of concentrating KCl in sylvinite ores, the invention is not limited thereto. More specifically the present invention is applicable to KCl concentrating processes in general including e.g. those often referred to in the art as flotation, settling, and dissolution processes in general.
  • the copolymer slime inhibitor of the present invention consists by weight thereof essentially of 99 %20% acrylamide and 1%-80% MTMMS, preferably about 97%- 50% acrylamide and 3%50% MTMMS, about 95% 60% acrylamide and %40% MTMMS being specifically preferred.
  • the precipitation process broadly comprises polymerizing butanol, aqueous acetone or aqueous tertiary butanolacetone in the substantial absence of air while agitating the solution to give a copolymer product that can be isolated by filtration, the aqueous tertiary butanol and aqueous acetone being solvents for the monomers but nonsolvents for the copolymer product.
  • the solvent for the monomers must be aqueous tertiary butanol, aqueous acetone or aqueous tertiary butanolacetone (i.e. mixtures of water with tertiary butanol or acetone alone or with both).
  • concentrations of water in said mixtures must be 30%65%, preferably 45%- 60%, by weight of said mixtures.
  • the polymerization reaction temperature must be 0 C.- 60" C., preferably 0 C.40 C.
  • the polymerization may be carried out either in the presence or absence of a polymerization catalyst (initiator), but preferably a polymerization initiator will be used. Both the types and amounts of free radical initiator applicable are well known in this art. Peroxygen compounds are quite suitable, including e.g. ammonium persulfate, potassium persulfate and hydrogen peroxide. Other free radical initators include e.g. u,ot'-axo-bis-isobutyronitrile. The peroxygen initators may be used alone or in combination with activators (also well known in this art) including e.g.
  • the amount of initator usually will not exceed 0.5%, preferably is 0.05%0.2%, 0.05% being specifically preferred, by weight of the combined weight of monomers.
  • the precipitation polymerization is carried out in the presence of a salt dissolved in the polymerization reaction mixture.
  • a salt or a buffer system comprising one or more salts in combination with another material to complete the buffer system, recovery of the copolymer product is substantially facilitated.
  • salts and buffer systems include, e.g., (1) alkali metal and ammonium acetates, carbonates, bicarbonates, chlorides, phosphates, sulfates, bisulfates, borates; (2) buffer sys-- terns comprising (2.) mixtures of weak acid or weak base and their salts including (b) phthalates, citrates, borates, phosphates, acetates, ammonium hydroxide, ammonium acetate, ammonium chloride, (c) specific combinations including mixtures of boric acid-borax, citric acid-sodium acid phosphate, sodium carbonate-sodium bicarbonate, ammonium chloride-ammonium hydroxide, ammonium acetate-ammonium hydroxide; or (3) any combination of -(1), and (2).
  • buffer sys--- terns comprising (2.) mixtures of weak acid or weak base and their salts including (b) phthalates, citrates, bor
  • the amount of salt which may be used is about 0-.1%- 2.0% preferably about 0.2%0.7%, by weight of the reaction mixture. If the amount of salt exceeds about 2.0%, usually there is a tendency for the granules of the polymeric product to agglomerate in the polymerization reaction mixture.
  • the manner of adding the salt and the point at which it is added are not critical.
  • copolymer slime inhibitor in accordance with the present invention may be added in dry form to the ore being treated, it is preferred to add it as an aqueous solution in order to get faster and more complete dispersion thereof throughout the ore.
  • copolymer consists by weight thereof essentially of 99%20% acrylamide and 1%80% beta methacrylyloxyethyltrimethylammonium methyl sulfate.

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  • Separation Of Suspended Particles By Flocculating Agents (AREA)
US626943A 1967-03-30 1967-03-30 Treatment of sylvinite ores Expired - Lifetime US3452867A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62694367A 1967-03-30 1967-03-30

Publications (1)

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US3452867A true US3452867A (en) 1969-07-01

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US626943A Expired - Lifetime US3452867A (en) 1967-03-30 1967-03-30 Treatment of sylvinite ores

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US (1) US3452867A (en, 2012)
BE (1) BE706550A (en, 2012)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782546A (en) * 1971-12-03 1974-01-01 Calgon Corp Cationic conditioning agents for potash flotation
US3993712A (en) * 1974-04-30 1976-11-23 Calgon Corporation Water-soluble vinyl-pyrrolidone block copolymers
US4268379A (en) * 1977-12-23 1981-05-19 American Cyanamid Company Selective flocculation for increased coal recovery by froth flotation
US20100021370A1 (en) * 2008-07-25 2010-01-28 Devarayasamudram Ramachandran Nagaraj Flotation Reagents and Flotation Processes Utilizing Same
US20150314305A1 (en) * 2012-12-20 2015-11-05 Akzo Nobel Chemicals International B.V. Polyquaternary Polymer as a Depressant in a Method for Froth Flotation of Potash Ores

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740522A (en) * 1953-04-07 1956-04-03 American Cyanamid Co Flotation of ores using addition polymers as depressants
US2923408A (en) * 1954-12-27 1960-02-02 Dow Chemical Co Flotation process
US3023162A (en) * 1956-04-10 1962-02-27 Rohm & Haas Dewatering aqueous suspensions with quaternized dialkylaminoalkyl acrylates or methacrylates
US3321649A (en) * 1964-12-28 1967-05-23 Shell Oil Co Separation of suspended solids by cationic polymeric flocculants

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740522A (en) * 1953-04-07 1956-04-03 American Cyanamid Co Flotation of ores using addition polymers as depressants
US2923408A (en) * 1954-12-27 1960-02-02 Dow Chemical Co Flotation process
US3023162A (en) * 1956-04-10 1962-02-27 Rohm & Haas Dewatering aqueous suspensions with quaternized dialkylaminoalkyl acrylates or methacrylates
US3321649A (en) * 1964-12-28 1967-05-23 Shell Oil Co Separation of suspended solids by cationic polymeric flocculants

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782546A (en) * 1971-12-03 1974-01-01 Calgon Corp Cationic conditioning agents for potash flotation
US3993712A (en) * 1974-04-30 1976-11-23 Calgon Corporation Water-soluble vinyl-pyrrolidone block copolymers
US4268379A (en) * 1977-12-23 1981-05-19 American Cyanamid Company Selective flocculation for increased coal recovery by froth flotation
US20100021370A1 (en) * 2008-07-25 2010-01-28 Devarayasamudram Ramachandran Nagaraj Flotation Reagents and Flotation Processes Utilizing Same
US8720694B2 (en) 2008-07-25 2014-05-13 Cytec Technology Corp. Flotation reagents and flotation processes utilizing same
US10130956B2 (en) 2008-07-25 2018-11-20 Cytec Technology Corp. Flotation reagents and flotation processes utilizing same
US11007538B2 (en) 2008-07-25 2021-05-18 Cytec Technology Corp. Flotation reagents and flotation processes utilizing same
US20150314305A1 (en) * 2012-12-20 2015-11-05 Akzo Nobel Chemicals International B.V. Polyquaternary Polymer as a Depressant in a Method for Froth Flotation of Potash Ores
US9486815B2 (en) * 2012-12-20 2016-11-08 Akzo Nobel Chemicals International B.V. Polyquaternary polymer as a depressant in a method for froth flotation of potash ores

Also Published As

Publication number Publication date
BE706550A (en, 2012) 1968-03-18

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