DE2150679A1 - Waste disposal - partic the rapid and efficient disposal of waste from salt -bath hardening plants - Google Patents

Waste disposal - partic the rapid and efficient disposal of waste from salt -bath hardening plants

Info

Publication number
DE2150679A1
DE2150679A1 DE19712150679 DE2150679A DE2150679A1 DE 2150679 A1 DE2150679 A1 DE 2150679A1 DE 19712150679 DE19712150679 DE 19712150679 DE 2150679 A DE2150679 A DE 2150679A DE 2150679 A1 DE2150679 A1 DE 2150679A1
Authority
DE
Germany
Prior art keywords
waste
disposal
waste materials
salt
partic
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.)
Pending
Application number
DE19712150679
Other languages
German (de)
Inventor
Ekkehard Mohr
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.)
Individual
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
Priority to DE19712150679 priority Critical patent/DE2150679A1/en
Publication of DE2150679A1 publication Critical patent/DE2150679A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/607—Molten salts
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Waste materials from salt bath hardening plants are rendered harmless by adding a mineral aggregate and smelting, sintering or burning the mixture. The mixture is burnt with finely granular chalk, limestone or marble or gypsum.

Description

Verfahren zur Unschädlichmachung von Abfallstoften der Salzbadhärterei Zusatz zu Patent......... (Patentanmaldung P 21 46 257.7) Die Erfindung betrifft eine Weiterbildung des Verfahrens zur Unschädlichmachung ven Abfallseffen der Salzbadhärtezei bei dem die Abfallstoffe untar Zugabe minerallischter Suschlag stoffe zu wasserunlöslichen Verbindungen sageschmolzen gesintert oder gebrannt werden, nach Patent..... (Fatentanme) p 21 46 257.7). nach dem haßptpatent werden die Abfallstoffe unter Zugabe von siliciumdimid in eine glasartige Schmelze oder Schlacke umgeschmolzen oder unter Angabe von Ton oder Lehm zu einer keramischen Verbindung gebxaunt oder genintert Aufgabe der vorliegendes Bufenang kst es eineu weiteran, einfach und schnell zur Unschsdlichacung von Abfallstoffen der Salzbadhärterei führanden meg zu weisen Gemäß der Erfis dung werden die Abfallst d3 nach wishg@@@@ eines feinköm gen Zusatzes aus Kreide , Seistei wiser Maror göer aus Gips gebrannt Das neue Verfahren wird im Folgenden anhand eines Ausführungsbeispiels erläutert: Bei der Salzbadhärterei angefallene Abfallstoffe werden mit etwa 50 Gewichtsprozent feinkörnigem Gips gemischt und auf eine Temperatur von 850 ° erhitzt. Nach dem Erkalten liegt eine wasserunlösliche, bröckelige rasse vor.Process for rendering waste materials from the salt bath hardening shop harmless Addition to patent ......... (Patent application P 21 46 257.7) The invention concerns a further development of the procedure for rendering harmless from the salt bath hardness time in which the waste materials are added to the water-insoluble ones Connections are melted, sintered or burned, according to patent ..... (Fatentanme) p 21 46 257.7). According to the hassptpatent, the waste materials are removed with the addition of silicon dimide remelted into a vitreous melt or slag or with the indication of clay or clay baked or sintered to form a ceramic compound task of the present Bufenang can give you a quick and easy way of rendering waste materials indelible the salt bath hardening shop lead to meg. According to the invention, the waste d3 after wishg @@@@ a fine-grained addition made of chalk, Seistei wiser Maror göer baked from plaster The new method is described below using a Exemplary embodiment explained: Waste materials accumulated in the salt bath hardening shop are mixed with about 50 percent by weight of fine-grained gypsum and brought to a temperature heated by 850 °. After cooling, a water-insoluble, crumbly breed lies before.

Wenn man einen Teil der vorgenannten Masse in Wasser aufkocht und das Wasser auf einen Cyanid-, Nitrit- und Bariumchloridgehalt sowie den pH-Wert überprüft, ergiht sich kein nachteiliger Befund.If you boil part of the aforementioned mass in water and the water to a cyanide, nitrite and barium chloride content as well as the pH value checked, there is no disadvantageous finding.

Claims (2)

PatentansprücheClaims 1. Verfahren zur Unschädlichmachung von Abfallstoffen der Salzbadhärterei, bei dem die Abfallstoffe unter Zugabe mineralisciler Zuschlagstoffe zu wasserunlöslichen Verbindungen umgeschmolzen, gesintert oder gebrannt werden, nach Patent ..... (Patentanmoldung P 21 46 257.7), dadurch gekennzeichnet, daß die Abfallstoffe nach Beimischung eines feinkörnigen Zusatzes aus Kreide, Kalkstein oder Marmor oder aus Gips gebrannt werden.1. Process for rendering waste materials from the salt bath hardening shop harmless, in which the waste materials with the addition of mineral-based aggregates become water-insoluble Connections are remelted, sintered or burned, according to patent ..... (Patentanmoldung P 21 46 257.7), characterized in that the waste materials after admixing a fine-grained additive made of chalk, limestone or marble or made of plaster of paris. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Mischung auf etwa 850 Grad erhitzt wird.2. The method according to claim 1, characterized in that the mixture is heated to about 850 degrees.
DE19712150679 1971-10-12 1971-10-12 Waste disposal - partic the rapid and efficient disposal of waste from salt -bath hardening plants Pending DE2150679A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712150679 DE2150679A1 (en) 1971-10-12 1971-10-12 Waste disposal - partic the rapid and efficient disposal of waste from salt -bath hardening plants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712150679 DE2150679A1 (en) 1971-10-12 1971-10-12 Waste disposal - partic the rapid and efficient disposal of waste from salt -bath hardening plants

Publications (1)

Publication Number Publication Date
DE2150679A1 true DE2150679A1 (en) 1973-04-19

Family

ID=5822058

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712150679 Pending DE2150679A1 (en) 1971-10-12 1971-10-12 Waste disposal - partic the rapid and efficient disposal of waste from salt -bath hardening plants

Country Status (1)

Country Link
DE (1) DE2150679A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178244A (en) * 1976-07-28 1979-12-11 Deutsche Gold- Und Silber Scheideanstalt Vormals Roessler Process for removal of hardening and galvanizing waste water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178244A (en) * 1976-07-28 1979-12-11 Deutsche Gold- Und Silber Scheideanstalt Vormals Roessler Process for removal of hardening and galvanizing waste water

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