DE3937312C2 - - Google Patents
Info
- Publication number
- DE3937312C2 DE3937312C2 DE19893937312 DE3937312A DE3937312C2 DE 3937312 C2 DE3937312 C2 DE 3937312C2 DE 19893937312 DE19893937312 DE 19893937312 DE 3937312 A DE3937312 A DE 3937312A DE 3937312 C2 DE3937312 C2 DE 3937312C2
- Authority
- DE
- Germany
- Prior art keywords
- residues
- titanium oxide
- exothermic reaction
- building material
- contaminated
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 9
- 239000000047 product Substances 0.000 claims description 8
- 239000004566 building material Substances 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 229910052935 jarosite Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 235000011148 calcium chloride Nutrition 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 238000004056 waste incineration Methods 0.000 claims 1
- 238000000605 extraction Methods 0.000 description 8
- 239000002699 waste material Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
- A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
- B09B3/25—Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/08—Toxic combustion residues, e.g. toxic substances contained in fly ash from waste incineration
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/40—Inorganic substances
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/40—Inorganic substances
- A62D2101/43—Inorganic substances containing heavy metals, in the bonded or free state
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/40—Inorganic substances
- A62D2101/47—Inorganic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Processing Of Solid Wastes (AREA)
Description
Die Erfindung bezieht sich auf ein Verfahren zur Verarbeitung belasteter Rückstände aus der Titanoxidgewinnung, die einer exothermen Reaktion unterzogen werden, bei der durch Wasserverdampfung ein Trockenprodukt erzeugt wird.The invention relates to a method for processing contaminated residues from titanium oxide extraction, which are subjected to an exothermic reaction in which a dry product is generated by water evaporation.
Aus der EP 3 01 262 A1 ist ein solches Verfahren zur Weiterverarbeitung belasteter Rückstände aus der Titanoxidgewinnung bekannt, bei dem zur Erzielung einer exothermen Reaktion, mittels der eine Entwässerung der Rückstände bewirkt wird, daß zumindest 10 Gew.-% Schwefelsäure enthaltende Metall-Sulfat-Gemisch mit feinteiligem Calciumoxid in geringem Überschuß vermischt wird; es erfolgt eine Umsetzung bei mindestens 110 Grad C. Nach der Umsetzung liegt ein trockenes, staubförmiges Pulver vor.Such a method for further processing is known from EP 3 01 262 A1 contaminated residues from titanium oxide extraction known to achieve an exothermic Reaction by means of a drainage of the residues is caused to contain at least 10 wt .-% sulfuric acid Metal-sulfate mixture with finely divided calcium oxide is mixed in a slight excess; it takes place a implementation at at least 110 degrees C. After the implementation there is a dry, dusty powder.
Dieses Pulver wird unter Zusatz von Wasser pelletiert und zu einem lagerstabilen Schüttgut weiterverarbeitet.This powder is pelleted with the addition of water and added processed a storage-stable bulk material.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Verarbeitung belasteter Rückstände aus der Titanoxidgewinnung zu schaffen, mittels dem die besagten Rückstände zu einem wiederverwertbaren Wirtschaftsgut umgesetzt werden.The invention has for its object a method for processing contaminated residues from titanium oxide extraction to create by means of said residues converted into a recyclable economic good will.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale im kennzeichnenden Teil des Patentanspruchs 1 gelöst. Durch geeignete Auswahl von mit den belasteten Rückständen aus der Titanoxidgewinnung reagierenden weiteren Abfallstoffen und durch entsprechende Dosierung der weiteren Abfallstoffe und der belasteten Rückstände aus der Titanoxidgewinnung wird bei der Vermischung eine exotherme Reaktion erzielt, die oberhalb 75 Grad C abläuft. Hierdurch wird das im Gemisch vorhandene Wasser verdampft, wonach ein Trockenprodukt entsteht, welches durch Beigabe entsprechender Bindemittel zu einem Baustoff verarbeitbar ist.This object is achieved by the features solved in the characterizing part of claim 1. Through a suitable selection of residues contaminated other waste materials reacting from the extraction of titanium oxide and by appropriate dosing of the other waste materials and the contaminated residues from the titanium oxide extraction becomes an exothermic when mixed Achieved reaction that takes place above 75 degrees C. Hereby the water in the mixture is evaporated, after which a dry product is formed, which by addition appropriate binder can be processed into a building material is.
Vorteilhaft kann der genannte Baustoff im Untertagebau verwendet werden.The building material mentioned can advantageously be used in underground construction will.
In der DD 1 49 136 sind eine Vielzahl von zu beseitigenden Abfallstoffen aufgeführt, die in Gegenwart eines Härtungsmittels mit einem durch chemische Umsetzung erhärtenden Bindemittel gemischt werden. Das so erhaltene Mischprodukt wird deponiert. Hierbei geht es darum, daß unter Umweltbedingungen austretende Schadstoffe so in einen anderen Stoff eingebracht werden, daß sie durch diesen anderen Stoff gegen ein Austreten in die Atmosphäre gesichert sind.DD 1 49 136 has a large number to be eliminated Waste listed in the presence of a curing agent with a chemical hardening Binder can be mixed. The mixed product thus obtained is deposited. This is about being under environmental conditions escaping pollutants into another Substances that are brought in by this other Are secured against leakage into the atmosphere.
Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels näher erläutert.The invention is described below using an exemplary embodiment explained in more detail.
Abfallsalze, z. B. Eisen-II-Sulfat mit 20-35% freier Schwefelsäure, und neutralisierte Nebenstoffe aus der Titanoxidgewinnung sowie Rückstände aus der Zinkgewinnung nach dem Jarositverfahren werden gemischt, wobei während des Mischvorgangs E-Filteraschen und Eindampfsalze zugesetzt werden. Es können aus Kohlekraftwerksaschen eingesetzt werden.Waste salts, e.g. B. Iron II sulfate with 20-35% free Sulfuric acid, and neutralized by-products from the Titanium oxide extraction and residues from zinc extraction after the jarosite process are mixed, whereby during E-filter ash and evaporation salts are added to the mixing process will. It can be used from coal power plant ash will.
Bei diesem Mischvorgang entsteht eine exotherme Reaktion, die oberhalb von etwa 75 Grad C verläuft.This mixing process creates an exothermic reaction which runs above about 75 degrees C.
Bei dieser Reaktion verdampft mit den Einsatzstoffen eingebrachtes Wasser, und es entsteht ein Trocknungsprodukt mit einem ph-Wert zwischen 6,5 und 8,0.In the course of this reaction, that which has been introduced evaporates with the starting materials Water, and a drying product is formed with a pH between 6.5 and 8.0.
Nach dem Abkühlen kann das so erzeugte Trocknungsprodukt durch Zugabe von Bindemitteln, z. B. Zementen, Gipsen, Kalken, zu einem sofort-, früh- oder spättragenden eluatfesten Baustoff für den Untertagebergbau verarbeitet werden.After cooling, the drying product thus produced can by adding binders, e.g. B. cements, gypsum, Liming to an immediate, early or late bearing eluate-proof building material for underground mining will.
Vorzugsweise werden zur Herstellung des Trocknungsprodukts je 25-33% der vorstehend aufgeführten Rückstände, je nach Zusammensetzung, eingesetzt. Es sind jedoch auch andere Mischungsverhältnisse möglich, z. B. unter Einsatz von Kalk.Preferably used to manufacture the drying product 25-33% each of the residues listed above, each according to composition. However, there are also other mixing ratios possible, e.g. B. using of lime.
Bei dem Verfahren werden die belasteten Rückstände aus der Titanoxidgewinnung und die belasteten Rückstände aus der Zinkgewinnung nach dem Jarositverfahren mit den E-Filteraschen und den Eindampfsalzen CaCl2 ·2H20/NaCl aus Müllverbrennungsanlagen so gemischt, daß die vorstehend erwähnte exotherme Reaktion abläuft, wobei das Gemisch auf oberhalb 75 Grad C erhitzt wird und infolge der Wasserverdampfung das Trocknungsprodukt entsteht, das unter Zusatz der Bindemittel zu einem eluatfesten Baustoff, der vorzugsweise im Untertagebergbau eingesetzt werden kann, verarbeitet werden kann.The process removes the contaminated residues the extraction of titanium oxide and the contaminated residues the zinc production according to the jarosite process with the E-filter ash and the evaporation salts CaCl2 · 2H20 / NaCl from waste incinerators so mixed that the above mentioned exothermic reaction takes place, the Mixture is heated to above 75 degrees C and as a result the water evaporation produces the drying product, that with the addition of the binders to an eluate-resistant Building material that is preferably used in underground mining can be processed.
Aus belasteten Abfallstoffen entsteht demgemäß ein Wirtschaftsgut, das außer im Bergbau auch für die Landrückgewinnung oder den Straßen- und Wegebau oder auch für Küstenbefestigungen einsetzbar ist.Accordingly, contaminated waste material is created Economic good that, in addition to mining, also for Land reclamation or road and path construction or also can be used for coastal fortifications.
Claims (2)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893937312 DE3937312A1 (en) | 1989-11-09 | 1989-11-09 | Solvent-resistant product for use in dam construction - made by mixing waste prodn. from some chemical processes |
| DE19904018568 DE4018568A1 (en) | 1989-11-09 | 1990-06-09 | Building material for underground use - mfd. from titanium- and zinc-extraction residues, filter ash, calcium chloride from waste incineration etc. and binder e.g. cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893937312 DE3937312A1 (en) | 1989-11-09 | 1989-11-09 | Solvent-resistant product for use in dam construction - made by mixing waste prodn. from some chemical processes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3937312A1 DE3937312A1 (en) | 1991-05-16 |
| DE3937312C2 true DE3937312C2 (en) | 1991-10-02 |
Family
ID=6393193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19893937312 Granted DE3937312A1 (en) | 1989-11-09 | 1989-11-09 | Solvent-resistant product for use in dam construction - made by mixing waste prodn. from some chemical processes |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3937312A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4103311A1 (en) * | 1991-02-04 | 1992-08-06 | Hoelter Heinz | Neutralising iron sulphate salts - by dissolving in water and adding calcium to form pumpable paste for backfilling |
| DE4213119C1 (en) * | 1992-04-21 | 1993-12-16 | Hoelter Heinz | Construction material derived from sludge - is mixed with ferrous-manganese sludge and ashes contg. residue from potash and salt mining as mine support piles |
| DE4304724C1 (en) | 1993-02-17 | 1994-05-05 | Metallgesellschaft Ag | Additive for strengthening oven refractory walls - comprises residues from titanium di:oxide prodn, coal residues, iron- and iron oxide-contg residues |
| NL1026346C2 (en) * | 2004-01-21 | 2005-07-25 | Insulinde Recycling & Milieu B | Binding heavy metals in waste incinerator ash, by mixing with acidic iron oxide or iron hydroxide |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2950462A1 (en) * | 1979-12-14 | 1981-06-19 | VFI Verwertungsgesellschaft für Industrierückstände mbH, 3161 Dollbergen | METHOD FOR THE DISPOSAL AND FINAL STORAGE OF WASTE MATERIALS |
| DE3724676A1 (en) * | 1987-07-25 | 1989-02-02 | Kronos Titan Gmbh | PROCESS FOR PROCESSING IRON (II) SULFATE-CONTAINING METAL SULFATE MIXTURES |
-
1989
- 1989-11-09 DE DE19893937312 patent/DE3937312A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE3937312A1 (en) | 1991-05-16 |
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Legal Events
| Date | Code | Title | Description |
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| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| AG | Has addition no. |
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| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |