CA2019959A1 - Method and apparatus for process for processing ground-up mixtures of minerals - Google Patents

Method and apparatus for process for processing ground-up mixtures of minerals

Info

Publication number
CA2019959A1
CA2019959A1 CA2019959A CA2019959A CA2019959A1 CA 2019959 A1 CA2019959 A1 CA 2019959A1 CA 2019959 A CA2019959 A CA 2019959A CA 2019959 A CA2019959 A CA 2019959A CA 2019959 A1 CA2019959 A1 CA 2019959A1
Authority
CA
Canada
Prior art keywords
separator
free fall
foot
air flow
mixtures
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.)
Granted
Application number
CA2019959A
Other languages
French (fr)
Other versions
CA2019959C (en
Inventor
Arno Singewald
Jost Gotte
Gunter Fricke
Siegfried Kirchner
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.)
Kali und Salz Beteiligungs AG
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2019959A1 publication Critical patent/CA2019959A1/en
Application granted granted Critical
Publication of CA2019959C publication Critical patent/CA2019959C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C7/00—Separating solids from solids by electrostatic effect
    • B03C7/003—Pretreatment of the solids prior to electrostatic separation
    • 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
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C7/00—Separating solids from solids by electrostatic effect
    • B03C7/006—Charging without electricity supply, e.g. by tribo-electricity or pyroelectricity
    • 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
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C7/00—Separating solids from solids by electrostatic effect
    • B03C7/02—Separators
    • B03C7/12—Separators with material falling free

Landscapes

  • Electrostatic Separation (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Elimination Of Static Electricity (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Seasonings (AREA)

Abstract

A process and a device is disclosed for the electrostatic separation of mineral mixtures, especially raw potassium salts, in a free fall separator, into a coarse fraction and a fine fraction, after the ground-up mixture has been conditioned and electrostatically charged. Each of the fractions is separately electrostatically processed and the fine fraction is fed to a free fall separator where a vertical air flow is generated in the direction from the inlet to foot of the separator. To generate the air flow, tubes or annular pipes made of electrically non-conducting material, are arranged in the discharge ducts of the free fall separator. These devices have nozzle openings oriented towards the foot of the separator and they are connected to a device which generates a negative pressure.
CA002019959A 1989-06-28 1990-06-27 Method and apparatus for process for processing ground-up mixtures of minerals Expired - Lifetime CA2019959C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3921072.3 1989-06-28
DE3921072A DE3921072A1 (en) 1989-06-28 1989-06-28 Electrostatic processing of crude potash with no wet stage - using free fall separator in which vertical air flow is maintained

Publications (2)

Publication Number Publication Date
CA2019959A1 true CA2019959A1 (en) 1990-12-28
CA2019959C CA2019959C (en) 1996-09-10

Family

ID=6383706

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002019959A Expired - Lifetime CA2019959C (en) 1989-06-28 1990-06-27 Method and apparatus for process for processing ground-up mixtures of minerals

Country Status (4)

Country Link
CA (1) CA2019959C (en)
DD (1) DD300081A5 (en)
DE (1) DE3921072A1 (en)
IT (1) IT1247699B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103977903B (en) * 2013-02-07 2017-03-29 李庆宪 Electrostatic conduction-type preparation equipment
CN104941812B (en) * 2015-07-20 2017-03-29 中国矿业大学 The fine granule material friction electrical selection method and device of lateral negative-pressure adsorption
CN105903570B (en) * 2016-05-20 2017-08-29 昆明理工大学 A kind of impact type triboelectric separator

Also Published As

Publication number Publication date
IT1247699B (en) 1994-12-30
DD300081A5 (en) 1992-05-21
IT9048097A1 (en) 1991-12-27
DE3921072C2 (en) 1991-08-08
DE3921072A1 (en) 1991-01-10
CA2019959C (en) 1996-09-10
IT9048097A0 (en) 1990-06-27

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