DE752222C - Process for the pretreatment of electrostatic material to be separated with oily wetting agents before separation - Google Patents

Process for the pretreatment of electrostatic material to be separated with oily wetting agents before separation

Info

Publication number
DE752222C
DE752222C DEM150191D DEM0150191D DE752222C DE 752222 C DE752222 C DE 752222C DE M150191 D DEM150191 D DE M150191D DE M0150191 D DEM0150191 D DE M0150191D DE 752222 C DE752222 C DE 752222C
Authority
DE
Germany
Prior art keywords
pretreatment
wetting agents
separated
oil
before separation
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
Application number
DEM150191D
Other languages
German (de)
Inventor
Richard Dr-Ing Heinrich
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.)
GEA Group AG
Original Assignee
Metallgesellschaft 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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Priority to DEM150191D priority Critical patent/DE752222C/en
Application granted granted Critical
Publication of DE752222C publication Critical patent/DE752222C/en
Expired 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

Landscapes

  • Electrostatic Separation (AREA)

Description

Verfahren zur Vorbehandlung von elektrostatischem Scheidegut mit öligen Benetzungsmitteln vor der Trennung Bei der elektrostatischen Scheidung von Zwei- oder Mehrstoffgemengen mit verschiedenartigem Oberflächenwiderstand ist es bekannt, das Scheidegut vor der Trennung mit öligen Benetzungsmitteln vorzubehandeln, um den Oberflächenwiderstand mindestens eines der Gemengeanteile gegenüber dem oder den restlichen Anteilen zu erhöhen und auf diese Weise die Trennschärfe im elektrostatischen Feld zu steigern. Es ist weiter an sich bekannt, elektrostatisches Scheidegut der Einwirkung von Dämpfen oder Gasen auszusetzen.Process for the pretreatment of electrostatic debris with oily Wetting agents before separation In the electrostatic separation of two or multicomponent mixtures with different types of surface resistance, it is known to pretreat the material to be cut with oily wetting agents before separation in order to the surface resistance of at least one of the batch proportions compared to the or to increase the remaining proportions and in this way the selectivity in the electrostatic Boost field. It is also known per se, the electrostatic separating material Exposure to vapors or gases.

Es hat sich nun gezeigt, daß das eine oder andere der bekannten Verfahren bei manchen Gemengen nicht immer ausreicht, um die gewünschte Steigerung der Trennschärfe zu erzielen. Deshalb wird der Erfindung gemäß die Behandlung des Scheidegutes durch Ölbenetzung mit der Behandlung durch ein gas-oder dampfförmiges Mittel verbunden, und zwar kommt es darauf an, daß das Gemenge nach der Benetzung mit wasserfreiem Öl, z. B. Paraffin- oder Kohlenteeröl, Erdöl, Fischöl, Eukalytusöl o. dgl., mit einem gas- oder dampfförmigen Mittel z.. B. Wasserdampf behandelt wird. Diese Behandlungsweise hat die vorteilhafte Wirkung, daß die Gase - oder Dämpfe im wesentlichen nur von den vom Öl unbenetzt gebliebenen Gemengeanteilen angenommen werden, die mit Öl benetzten Anteile aber im wesentlichen unbeeinflußt bleiben. Die Ölbenetzung und die nachfolgende Dampf-oder Gasbehandlung ergänzen sich also mit dem Ergebnis, daß die Oberflächenleitfähigkeit des einen Gemengeanteils gegenüber-dem oder den anderen Anteilen eine solche Erhöhung erfährt, daß die nachfolgende elektrostatische Trennung des vorbehandelten Gutes keine Schwierigkeiten bereitet.It has now been shown that one or the other of the known methods with some batches it is not always sufficient to achieve the desired increase in selectivity to achieve. Therefore, the invention according to the treatment of the scrap Oil wetting associated with treatment by a gaseous or vaporous agent, and it is important that the mixture after wetting with anhydrous Oil, e.g. B. paraffin or coal tar oil, petroleum, fish oil, eucalyptus oil o. The like., With a gaseous or vaporous agent, e.g. water vapor, is treated. This way of treatment has the beneficial effect that the gases - or Fumes essentially will only be accepted by the mixture fractions that have not been wetted by the oil, which parts wetted with oil but remain essentially unaffected. The oil wetting and the subsequent steam or gas treatment thus complement each other with the result, that the surface conductivity of the one part of the mixture compared to the or the other proportions experience such an increase that the subsequent electrostatic Separation of the pretreated goods poses no difficulties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Vorbehandlung von elektrostatischem Scheidegut mit öligen Benetzungsmitteln vor der Trennung, dadurch gekennzeichnet, daß das Gemenge nach der Benetzung mit wasserfreiem Öl mit einem gas- oder dampfförmigen Mittel derart behandelt wird, daß die Gase oder Dämpfe im wesentlichen nur von den vom <51 unbenetzt gebliebenen Anteilen angenommen werden und die mit Öl benetzten Gemengeteilchen im wesentlichen unbeeinflußt bleiben. Zur Abgrenzung des Erfindungsgegenstands vom Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: USA.-Patentschriften Nr. 1 152 q.q.2, 1 329 127, 1663 863, 2 090 418, 2 198 972.PATENT CLAIM: A process for the pretreatment of electrostatic separating material with oily wetting agents prior to separation, characterized in that the mixture is treated with a gaseous or vaporous agent after wetting with anhydrous oil in such a way that the gases or vapors are essentially only from the < 51 parts remaining unwetted are assumed and the mixture particles wetted with oil remain essentially unaffected. To distinguish the subject matter of the invention from the state of the art, the following documents have been considered in the granting procedure: USA patents No. 1 152 qq2, 1 329 127, 1 663 863, 2 09 0 418, 2 198 972.
DEM150191D 1940-06-20 1940-06-20 Process for the pretreatment of electrostatic material to be separated with oily wetting agents before separation Expired DE752222C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM150191D DE752222C (en) 1940-06-20 1940-06-20 Process for the pretreatment of electrostatic material to be separated with oily wetting agents before separation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM150191D DE752222C (en) 1940-06-20 1940-06-20 Process for the pretreatment of electrostatic material to be separated with oily wetting agents before separation

Publications (1)

Publication Number Publication Date
DE752222C true DE752222C (en) 1951-08-23

Family

ID=7336824

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM150191D Expired DE752222C (en) 1940-06-20 1940-06-20 Process for the pretreatment of electrostatic material to be separated with oily wetting agents before separation

Country Status (1)

Country Link
DE (1) DE752222C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760941A (en) * 1971-05-04 1973-09-25 Kali & Salz Ag Process for preparing highly free flowing rock or table salt

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1152442A (en) * 1913-01-20 1915-09-07 Frederic W C Schniewind Separation of coal.
US1329127A (en) * 1917-11-24 1920-01-27 Lockwood Alfred Arthur Separation of ores
US1663863A (en) * 1924-11-28 1928-03-27 Royster Percy Hoke Process for separating various constituents from mixed materials and apparatus for accomplishing said separation
US2090418A (en) * 1935-04-22 1937-08-17 Fred R Johnson Method of treating material for separation
US2198972A (en) * 1938-04-01 1940-04-30 Feldspathic Res Corp Method of concentrating nonmetallic minerals

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1152442A (en) * 1913-01-20 1915-09-07 Frederic W C Schniewind Separation of coal.
US1329127A (en) * 1917-11-24 1920-01-27 Lockwood Alfred Arthur Separation of ores
US1663863A (en) * 1924-11-28 1928-03-27 Royster Percy Hoke Process for separating various constituents from mixed materials and apparatus for accomplishing said separation
US2090418A (en) * 1935-04-22 1937-08-17 Fred R Johnson Method of treating material for separation
US2198972A (en) * 1938-04-01 1940-04-30 Feldspathic Res Corp Method of concentrating nonmetallic minerals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760941A (en) * 1971-05-04 1973-09-25 Kali & Salz Ag Process for preparing highly free flowing rock or table salt

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