FR2721535B1 - Method and device for purifying sodium chloride. - Google Patents

Method and device for purifying sodium chloride.

Info

Publication number
FR2721535B1
FR2721535B1 FR9507140A FR9507140A FR2721535B1 FR 2721535 B1 FR2721535 B1 FR 2721535B1 FR 9507140 A FR9507140 A FR 9507140A FR 9507140 A FR9507140 A FR 9507140A FR 2721535 B1 FR2721535 B1 FR 2721535B1
Authority
FR
France
Prior art keywords
soln
slurry
central tube
vessel
zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
FR9507140A
Other languages
French (fr)
Other versions
FR2721535A1 (en
Inventor
Reinhard Noack
Ivan Bakardjiev
Roland Keidel
Christian Pfeifer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
K+S AG
Original Assignee
K+S AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by K+S AG filed Critical K+S AG
Publication of FR2721535A1 publication Critical patent/FR2721535A1/en
Application granted granted Critical
Publication of FR2721535B1 publication Critical patent/FR2721535B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/04—Chlorides
    • C01D3/08—Preparation by working up natural or industrial salt mixtures or siliceous minerals
    • 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
    • B03D1/14—Flotation machines
    • B03D1/1418—Flotation machines using centrifugal forces
    • 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
    • B03D1/14—Flotation machines
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1475—Flotation tanks having means for discharging the pulp, e.g. as a bleed stream
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/14—Purification

Abstract

Concn. of salt with a high percentage of NaCl, which also contains soluble and insol. impurities, comprises reducing the salt to a particle size less than 1 mm and contacting it with a soln. which is unsatd. w.r.t. the impurities, a flotation agent and finely-distributed air. In the process (a) a mashed slurry contg. flotation agent is mixed with an excess of several times of recycled soln.; (b) the slurry is passed rapidly into an annular chamber at the foot of a conical vessel, with a moving vertical central tube but no stirrer; (c) the coarsest fraction is dissolved and hydrolysed by a dwell in the bottom zone of the vessel; (d) the medium and fine particles rise into another turbulent zone in the middle of the vessel; (e) the slurry is clarified i.e. the solid is sepd. from the soln. in the top zone and the clarified soln. is discharged through an outlet pipe; (f) the pre-purified fraction sinks inside the central tube, from which fine air bubbles rise and particles of anhydrite and/or kieserite stick to these and are carried upwards, where they are removed with the froth; and (g) the purified grains are discharged at the bottom of the central tube, where a small amt. of circulating soln. enters and rises. Also claimed is the appts. used.
FR9507140A 1994-06-23 1995-06-15 Method and device for purifying sodium chloride. Expired - Fee Related FR2721535B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4422034A DE4422034C1 (en) 1994-06-23 1994-06-23 High grade sodium chloride purificn. by leaching and flotation

Publications (2)

Publication Number Publication Date
FR2721535A1 FR2721535A1 (en) 1995-12-29
FR2721535B1 true FR2721535B1 (en) 1999-07-09

Family

ID=6521349

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9507140A Expired - Fee Related FR2721535B1 (en) 1994-06-23 1995-06-15 Method and device for purifying sodium chloride.

Country Status (4)

Country Link
DE (1) DE4422034C1 (en)
ES (1) ES2112757B1 (en)
FR (1) FR2721535B1 (en)
IL (1) IL114262A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4802305B2 (en) * 2009-07-17 2011-10-26 独立行政法人科学技術振興機構 Floating separation apparatus and method, and manufacturing method of product using the same
CN106268473A (en) * 2016-09-30 2017-01-04 益盐堂（应城）健康盐制盐有限公司 A kind of devices and methods therefor utilizing air-blow method washing baysalt to improve salt matter
RU2669622C1 (en) * 2018-01-31 2018-10-12 Генкин Михаил Владимирович Method and reactor for extracting sodium chloride and potassium chloride from polymineral sources

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES336830A1 (en) * 1967-02-14 1968-01-01 Espanola Explosivos Procedure for the concentration of potassic chloride by flotation of silvinite. (Machine-translation by Google Translate, not legally binding)
ES354299A2 (en) * 1968-05-24 1969-10-16 Espanola Explosivos Procedure for the concentration of potassic chloride by flotation of silvinite. (Machine-translation by Google Translate, not legally binding)
DE2811889C3 (en) * 1978-03-18 1982-03-25 Kali Und Salz Ag, 3500 Kassel Process for the production of sodium chloride with a reduced content of secondary components
IT1157938B (en) * 1982-05-11 1987-02-18 Italkali PROCEDURE FOR THE PRODUCTION OF SODIUM CHLORIDE WITH A HIGH DEGREE OF PURITY STARTING FROM STERILES OF FLOTATION OF POTASSIUM MINERALS
DD290405A5 (en) * 1989-12-20 1991-05-29 Veb Kalibetrieb Suedharz,De METHOD AND DEVICE FOR CLEANING SODIUM CHLORIDE
DE4025371A1 (en) * 1990-08-10 1992-02-13 Kali & Salz Ag PROCESS FOR CLEANING ELECTROSTATICALLY OBTAINED STONE SALT

Also Published As

Publication number Publication date
IL114262A0 (en) 1995-10-31
ES2112757A1 (en) 1998-04-01
DE4422034C1 (en) 1995-08-31
IL114262A (en) 1997-11-20
FR2721535A1 (en) 1995-12-29
ES2112757B1 (en) 1999-08-01

Similar Documents

Publication Publication Date Title
FR2512802B1 (en) APPARATUS AND METHOD FOR CLARIFYING WATER BY COMBINED USE OF FLOTATION AND FILTRATION PROCESSES
FI882141A0 (en) Process for the purification of calcium carbonate-containing mineral
JPH0847606A (en) Method and apparatus for treating untreated liquid flow
MX159100A (en) IMPROVEMENTS IN METHOD AND APPARATUS TO SEPARATE PARTICLES OF MINERALS BY FLOATING A CENTRIFUGAL FIELD
US5814229A (en) Water treatment method and apparatus
FR2721535B1 (en) Method and device for purifying sodium chloride.
EP0266476A3 (en) Process and device for treating sludge
EP3746202B1 (en) Reactor for separation of sodium chloride and potassium chloride from polymineral sources and method thereof
DE3884732D1 (en) Sedimentation tank for water and wastewater treatment.
JPH08155469A (en) Apparatus for granulating and removing phosphorus compound
US1248329A (en) Method for treating ferruginous waters.
SU520132A1 (en) Column Flotation Apparatus
SU937437A1 (en) Process for purifying effluents of sulphate cellulose production
DK275080A (en) PROCEDURE FOR BILOGICAL WASTE CLEANING
SU906946A1 (en) Method for isolating protein and fat wastes from effluents
JPS5791790A (en) Apparatus for biologically treating waste water
JPS5570309A (en) Agglomeration precipitation apparatus
SU831190A1 (en) Method of flotation of potassium containing ores
KR880002536B1 (en) Treatment method of microscopic particles in a suspension liquid
RU2038864C1 (en) Pneumatic flotation machine
Kopylov Characteristics of a Fluidized Bed and its Effect on the Course of the Flotation Process(Kharakteristika pennogo sloya i ego vliyanie na khod flotatsionnogo protsessa)
EP0995721A3 (en) Process for retaining in a basin biomass-forming microorganisms in water suspension
JPS5599385A (en) Method and apparatus for biological treatment of waste water
JPS57105208A (en) Settling and separation tank
JPS5581790A (en) Clarification tank for excretion

Legal Events

Date Code Title Description
ST Notification of lapse