US3782546A - Cationic conditioning agents for potash flotation - Google Patents

Cationic conditioning agents for potash flotation Download PDF

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Publication number
US3782546A
US3782546A US00204647A US3782546DA US3782546A US 3782546 A US3782546 A US 3782546A US 00204647 A US00204647 A US 00204647A US 3782546D A US3782546D A US 3782546DA US 3782546 A US3782546 A US 3782546A
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potash
ore
flotation
froth
polymers
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R Kirwin
W Hart
J Antonetti
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Calgon Corp
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Calgon Corp
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    • 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
    • B03D1/02—Froth-flotation processes
    • 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
    • B03D1/008—Organic compounds containing oxygen
    • 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
    • B03D1/016—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
    • B03D1/011—Quaternary ammonium 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
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/007—Modifying reagents for adjusting pH or conductivity
    • 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
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/04—Frothers
    • 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

  • ABSTRACT [52] US. Cl. 209/166, 209/5 [51] Int. Cl B03d 1/02
  • An improved froth flotation process for separating syl- [58] Field of Search 209/166, 5; 210/53, vite from a pulp containing sylvite using a water- 210/54 soluble, high molecular weight, diallyl dialkyl quaternary ammonium polymer as a slime conditioning agent [56] References Cited is disclosed.
  • Potash froth flotation is the most commonly employed process for separating potash values from pulps containing potash.
  • Potash ores mined in the United States and Canada generally'contain from about 5 to 50 percent sylvite (KCl) with the balance being primarily halite (NaCl) and the remainder gangue materials.
  • KCl sylvite
  • halite NaCl
  • the gangue minials found with sylvite/halite ore are clays such as montmorillonite and gypsum along with minor amounts ofiron, manganese oxides and other minerals. These ores are the primary source of potash chemicals for agriculture and industry.
  • the potash flotation process comprises the following general steps. First, the sylvitecontaining ore is crushed and ground in a saturated brine until the ore particles are from 8 to mesh in size. Saturated, brine solution is used throughout the potash flotation process since sylvite is soluble in water and any unsaturated water used in the process would dissolve the ore and result in a loss. The ore pulp is then diluted with additional brine until a consistence of about 20 to 40 percent byweight ore solids is obtained.
  • the various conditioning agents, collecting agents, and frothing agents are added to the ore slurry.
  • the pulp is then aerated to produce a froth at the pulp surface.
  • the potash values are concentrated in the froth and the remainder of the ore consisting essentially of halite and gangue remains in the aqueous pulp phase.
  • the potash-bearing froth is then separated from the residual pulp and further processed to obtain the desired metal.
  • the residual liquid pulp generally referred to as the flotation tailings is then further sub jected to additional frothing steps if it contains a sufficiently high concentration of potash. If not, the tailings are discarded. lt is safe to say that the majority of potash flotation processes follow the above sequence. However, it should be noted that many additional but optional steps such as scrubbing, desliming and classifying are commonly employed and many variations of the above-described general process have found wide acceptance in the art.
  • agents for potash flotation are the fatty amines, especially the amine salts such as octylamine hydrochloride and octadecylamine acetate.
  • Frothing agents are compounds which dissolve in the pulp solution and have both a polar and nonpolar group in the molecule. These compounds change the air-pulp solution interface tension thereby helping to produce a voluminous body of bubbles at or above the surface of the flotation pulp and also helping to prolong the life of the bubbles so produced.
  • the most commonly employed frothing agents for the potash flotation process are the C to C aliphatic alcohols.
  • a conditioning agent is usually employed. Both the col lecting agent and frothing agent have a tendency to be consumed by the gangue, especially clay. Therefore, as much of the gangue is removed by mechanical means that is practicable. Thereafter, it is necessary to add a conditioning agent which decreases the attraction of the gangue for the collecting and frothing agents.
  • This type of conditioning agent is commonly called a slime blinder or slime depressant.
  • the most commonly used deslimers used in potash flotation processes are starch and other carbohydrate polymers. For example, see
  • a collecting agent for the potash flotation process is one which preferentially adheres to the sylvite but not to the halite thereby producing a water repellent coating on the potash particles. The air bubbles will then cling to the potash particles and concentrate them in the froth.
  • the most commonly employed collecting SUMMARY OF THE INVENTION The present invention is directed to a conditioning agent, particularly to a conditioning agent which increases the potash yield by acting on the gangue (slime). More particularly,'the present invention is directed to the use of high molecular weight, watersoluble, diallyl dialkyl quaternary ammonium polymers as conditioning agents for increasing the potash recovery in potash flotation processes.
  • the slimes themselves may be carried over in the froth if they have adsorbed the collecting agents.
  • the process efficiency is increased.
  • less amount of collecting agents and frothing agents are adsorbed by the slime. This leads to an increase in efficiency since more of the agents are available for the potash particles and less of the slime is found in the froth.
  • the coagulated slime does not entrap the potash particles and the coagulated slime is less likely to he found in the froth. Therefore, is appears that the polymers of our invention increase the flotation process by selectively blinding the slime.
  • R is hydrogen or an alkyl group of l to 18 carbon atoms.
  • the preparation and use'of this class of compounds is illustrated in Butler U.S. Pat. No. 3,288,770, Boothe U.S. Pat. Nos. 3,461,163 and 3,472,740, Schuller et a1 U.S. Pat. No. 2,923,701 and Booth et a1. U.S. Pat. No. 3,147,218.
  • the preferred diallyl dialkyl polymers are when R is a lower alkyl group of l to 4 carbon atoms, preferably methly.
  • the polymers of our invention may be prepared by polymerizing the cationic monomer using any of the well known solution, emulsion or suspension techniques. We have prepared effective polymers using all three of these methods. Our invention is independent of the method of preparation so long as the resulting polymer is a water-soluble, high molecular weight cationic polymer of diallyl dialkyl quaternary ammonium chlorides.
  • the polymers of our invention are prepared by polymerizing the quaternary ammonium monomers. lt is also within the scope of our invention to use copolymers of two or more different quaternary ammonium compounds. It is also within the scope of our invention to use polymers containing groups derived from monomers in addition to the cationic monomers. Our invention contemplates the use of copolymers containing up to about 97.5 mole percent of other water-soluble comonomers and up to about l mole percent of water-insoluble comonomers.
  • Examples of some of the useful water-soluble comonomers are acrylamide, methacrylamide, diacetone acrylamide and the N-lower alkyl substituted acrylamides and methacrylamides.
  • Examples of some of the waterinsoluble comonomers are vinyl acetate, acrylonitrile, vinyl chloride, styrene, and the lower alkyl esters of acrylic and methacrylic acid. Therefore, while the polymers of our invention consist essentially of diallyl dialkyl quaternary ammonium compounds, they may also contain up to about 97.5 mole percent of other watersoluble monomers and up to about mole percent of water-insoluble comonomers and still be within the scope of our invention.
  • diallyl dialkyl quaternary ammonium polymers of our invention are watersoluble, high molecular weight and contain at least 2.5 percent diallyl dialkyl quaternary ammonium compounds.
  • the preferred polymers of our invention contain at least 5 percent diallyl dialkyl quaternary ammonium compounds and the preferred comonomer is acrylamide.
  • the molecular weight of the polymers may be as low as 1,000 or as high as 10,000,000 or higher. We have found that generally the higher molecular weight polymers are somewhat better than low molecular weight polymers. There is no reason to believe that there is a critical minimum molecular weight which must be achieved in order to show an improved flotation process. However, for all practical purposes, a minimum molecular weight of about 10,000 is necessary for economic results.
  • concentrations less than 0.001 pounds per ton based on the weight of the dry ore will seldom be used.
  • concentrations greater than 1.0 pounds per ton will seldom be used.
  • concentration range will differ depending on which ore is being processed. However, in the majority of cases, the concentration of cationic polymer will be from about 0.001 to about 0.01 pounds per ton.
  • FIG. 1 is a flow diagram of a typical potash flotation process. With reference to FIG. 1, it can be seen that the process has three different flotation steps where the potash is separated from the undesirable by-products. In FIG. 1, these steps are labeled rougher flotation, cleaner flotation, and recleaner flotation. The polymers of our invention may be added prior to any of these flotation steps in order to increase the efficiency of that particular flotation step.
  • the cationic polymers of our invention work on the gangue, they are effective in processing other solu-' ble salts which may be refined by froth flotation. For example, they may be used in the flotation of halite from sylvite, langbeinite from halite, sodium bicarbonate from halite and many others.
  • Table 1 gives the results of the laboratory tests performed on the ore samples taken during a one day period.
  • the ore was -8 mesh.
  • the slime blinders tested were guar gum (Guar), a high molecular weight, slightly hydrolyzed polyacrylamide (PAM) and a higher molecular weight homopolymer of dimethyl diallyl ammonium chloride (DMDAAC).
  • the other agents employed for collecting and frothing were an amine collector, methoxy propylene glycol and methyl isobutyl carbinol.
  • Table 11 gives the results of the laboratory tests per formed on a series of ore samples taken during a one day period.
  • the ore was -6 mesh and the agents employed are the same as mentioned for Table 1 above.
  • Table 111 gives the results of laboratory tests performed on a series of three ore samples.
  • the ore was -8 mesh and the agents employed are the same as for Table 1 above. In these tests, the guar and polyacrylamide were used together.
  • An improved potash froth flotation process comprising grinding the potash ore, mixing the ground ore with water to form an ore pulp, aerating the pulp to form a froth and collecting and processing the froth wherein the improvement comprises adding to the ore pulp during said flotation process, but prior to frothing, a water-soluble, high molecular weight, diallyl dialkyl quaternary ammonium polymer consisting essentially of dimethyl diallyl ammonium chloride as a conditioning agent.
  • An improved potash froth flotation process comprising grinding the potash ore, mixing the ground ore with water to form an ore pulp, aerating the pulp to form a froth and collecting and processing the froth wherein the improvement comprises adding to the ore pulp during said flotation process, but prior to frothing, from about 0.001 to about 0.01 pounds per ton based on the weight of the dryore 'of a water-soluble, high molecular weight,polymer consisting essentially of dimethyl diallyl ammonium chloride as a conditioning agent, said polymer having a molecular weight of at least about 10,000.

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US00204647A 1971-12-03 1971-12-03 Cationic conditioning agents for potash flotation Expired - Lifetime US3782546A (en)

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198288A (en) * 1979-03-22 1980-04-15 Celanese Polymer Specialties Company Desliming of potash ores
US4441993A (en) * 1975-11-03 1984-04-10 Fluor Corporation Flotation process
US5013452A (en) * 1989-06-23 1991-05-07 Petrolite Corporation Resolution of emulsions formed in the production of pharmaceuticals
US5057208A (en) * 1984-09-25 1991-10-15 Kali Und Salz Aktiengesellschaft Method for the production of potassium chloride with K2 O content of more than 55 weight percent
US5217604A (en) * 1991-03-28 1993-06-08 Fospur Limited Froth flotation of fine particles
US5635112A (en) 1993-06-09 1997-06-03 Nalco Chemical Company Hydrophobically-modified demulsifiers for oil-in-water systems
RU2132239C1 (ru) * 1997-05-13 1999-06-27 Акционерное общество "Уралкалий" Способ обесшламливания калийных руд
RU2144435C1 (ru) * 1998-04-08 2000-01-20 Открытое акционерное общество "Уралкалий" Способ получения хлористого калия из калийсодержащих руд
RU2165798C1 (ru) * 1999-09-01 2001-04-27 Открытое акционерное общество "Уралкалий" Способ флотационного обогащения калийных руд
RU2245742C1 (ru) * 2003-10-16 2005-02-10 ОАО "Уральский научно-исследовательский и проектный институт галургии" (ОАО "Галургия") Способ обогащения калийсодержащих руд
RU2278739C2 (ru) * 2004-07-07 2006-06-27 Открытое акционерное общество "Уралкалий" (ОАО "Уралкалий") Способ флотационного обогащения руд
US20070012630A1 (en) * 2004-12-23 2007-01-18 Georgia-Pacific Resins, Inc. Amine-aldehyde resins and uses thereof in separation processes
US20080017552A1 (en) * 2004-12-23 2008-01-24 Georgia-Pacific Chemicals Llc Modified amine-aldehyde resins and uses thereof in separation processes
US20080029460A1 (en) * 2004-12-23 2008-02-07 Georgia-Pacific Chemicals Llc. Amine-aldehyde resins and uses thereof in separation processes
RU2354457C1 (ru) * 2007-11-27 2009-05-10 Открытое Акционерное Общество "Уральский Научно-Исследовательский И Проектный Институт Галургии" (Оао "Галургия") Способ обогащения калийсодержащих руд
US20100256244A1 (en) * 2009-04-03 2010-10-07 Kroff Chemical Company Demulsification Compositions, Systems and Methods for Demulsifying and Separating Aqueous Emulsions
US7913852B2 (en) 2004-12-23 2011-03-29 Georgia-Pacific Chemicals Llc Modified amine-aldehyde resins and uses thereof in separation processes
US8092686B2 (en) 2004-12-23 2012-01-10 Georgia-Pacific Chemicals Llc Modified amine-aldehyde resins and uses thereof in separation processes
US8702993B2 (en) 2004-12-23 2014-04-22 Georgia-Pacific Chemicals Llc Amine-aldehyde resins and uses thereof in separation processes
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
WO2018045025A1 (en) * 2016-08-31 2018-03-08 Kemiraoyj Cationic polymer selective depressants and use thereof in mineral ore purification methods
RU2738883C1 (ru) * 2020-03-02 2020-12-17 Публичное акционерное общество "Уралкалий" (ПАО "Уралкалий") Способ флотационного обогащения калийных руд
CN115961146A (zh) * 2022-12-21 2023-04-14 中国恩菲工程技术有限公司 一种含钾微细粒混合铜矿的综合处理方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141691A (en) * 1977-12-12 1979-02-27 Calgon Corporation Use of water soluble polymers in coal flotation circuits

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923408A (en) * 1954-12-27 1960-02-02 Dow Chemical Co Flotation process
US3165465A (en) * 1961-05-04 1965-01-12 Armour & Co Flocculation and settling of liquid suspensions of finely-divided minerals
US3259237A (en) * 1963-04-22 1966-07-05 Saskatchewan Potash Phase desliming and concentration of potash ores
US3321649A (en) * 1964-12-28 1967-05-23 Shell Oil Co Separation of suspended solids by cationic polymeric flocculants
US3408292A (en) * 1966-03-24 1968-10-29 Nalco Chemical Co Water filtration process
US3452867A (en) * 1967-03-30 1969-07-01 Hercules Inc Treatment of sylvinite ores

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923408A (en) * 1954-12-27 1960-02-02 Dow Chemical Co Flotation process
US3165465A (en) * 1961-05-04 1965-01-12 Armour & Co Flocculation and settling of liquid suspensions of finely-divided minerals
US3259237A (en) * 1963-04-22 1966-07-05 Saskatchewan Potash Phase desliming and concentration of potash ores
US3321649A (en) * 1964-12-28 1967-05-23 Shell Oil Co Separation of suspended solids by cationic polymeric flocculants
US3408292A (en) * 1966-03-24 1968-10-29 Nalco Chemical Co Water filtration process
US3452867A (en) * 1967-03-30 1969-07-01 Hercules Inc Treatment of sylvinite ores

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4441993A (en) * 1975-11-03 1984-04-10 Fluor Corporation Flotation process
US4198288A (en) * 1979-03-22 1980-04-15 Celanese Polymer Specialties Company Desliming of potash ores
US5057208A (en) * 1984-09-25 1991-10-15 Kali Und Salz Aktiengesellschaft Method for the production of potassium chloride with K2 O content of more than 55 weight percent
US5013452A (en) * 1989-06-23 1991-05-07 Petrolite Corporation Resolution of emulsions formed in the production of pharmaceuticals
US5217604A (en) * 1991-03-28 1993-06-08 Fospur Limited Froth flotation of fine particles
US5304317A (en) * 1991-03-28 1994-04-19 Fospur Limited Froth flotation of fine particles
US5635112A (en) 1993-06-09 1997-06-03 Nalco Chemical Company Hydrophobically-modified demulsifiers for oil-in-water systems
RU2132239C1 (ru) * 1997-05-13 1999-06-27 Акционерное общество "Уралкалий" Способ обесшламливания калийных руд
RU2144435C1 (ru) * 1998-04-08 2000-01-20 Открытое акционерное общество "Уралкалий" Способ получения хлористого калия из калийсодержащих руд
RU2165798C1 (ru) * 1999-09-01 2001-04-27 Открытое акционерное общество "Уралкалий" Способ флотационного обогащения калийных руд
RU2245742C1 (ru) * 2003-10-16 2005-02-10 ОАО "Уральский научно-исследовательский и проектный институт галургии" (ОАО "Галургия") Способ обогащения калийсодержащих руд
RU2278739C2 (ru) * 2004-07-07 2006-06-27 Открытое акционерное общество "Уралкалий" (ОАО "Уралкалий") Способ флотационного обогащения руд
US20070012630A1 (en) * 2004-12-23 2007-01-18 Georgia-Pacific Resins, Inc. Amine-aldehyde resins and uses thereof in separation processes
US20080017552A1 (en) * 2004-12-23 2008-01-24 Georgia-Pacific Chemicals Llc Modified amine-aldehyde resins and uses thereof in separation processes
US20080029460A1 (en) * 2004-12-23 2008-02-07 Georgia-Pacific Chemicals Llc. Amine-aldehyde resins and uses thereof in separation processes
US8757389B2 (en) 2004-12-23 2014-06-24 Georgia-Pacific Chemicals Llc Amine-aldehyde resins and uses thereof in separation processes
US7913852B2 (en) 2004-12-23 2011-03-29 Georgia-Pacific Chemicals Llc Modified amine-aldehyde resins and uses thereof in separation processes
US8011514B2 (en) 2004-12-23 2011-09-06 Georgia-Pacific Chemicals Llc Modified amine-aldehyde resins and uses thereof in separation processes
US8092686B2 (en) 2004-12-23 2012-01-10 Georgia-Pacific Chemicals Llc Modified amine-aldehyde resins and uses thereof in separation processes
US8127930B2 (en) 2004-12-23 2012-03-06 Georgia-Pacific Chemicals Llc Amine-aldehyde resins and uses thereof in separation processes
US10150839B2 (en) 2004-12-23 2018-12-11 Ingevity South Carolina, Llc Amine-aldehyde resins and uses thereof in separation processes
US8702993B2 (en) 2004-12-23 2014-04-22 Georgia-Pacific Chemicals Llc Amine-aldehyde resins and uses thereof in separation processes
RU2354457C1 (ru) * 2007-11-27 2009-05-10 Открытое Акционерное Общество "Уральский Научно-Исследовательский И Проектный Институт Галургии" (Оао "Галургия") Способ обогащения калийсодержащих руд
US20100256244A1 (en) * 2009-04-03 2010-10-07 Kroff Chemical Company Demulsification Compositions, Systems and Methods for Demulsifying and Separating Aqueous Emulsions
US8796433B2 (en) 2009-04-03 2014-08-05 Kroff Chemical Company Demulsification compositions, systems and methods for demulsifying and separating aqueous emulsions
US9308474B2 (en) 2009-04-03 2016-04-12 Kroff Chemical Company Demulsification compositions, systems and methods for demulsifying and separating aqueous emulsions
US8268975B2 (en) 2009-04-03 2012-09-18 Dow Agrosciences Llc Demulsification compositions, systems and methods for demulsifying and separating aqueous emulsions
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IT973527B (it) 1974-06-10
FR2162178A1 (cg-RX-API-DMAC10.html) 1973-07-13
CA968888A (en) 1975-06-03
DE2259009A1 (de) 1973-06-14
FR2162178B3 (cg-RX-API-DMAC10.html) 1974-10-31

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