DE2234045A1 - Coal flotation reagents prodn - by partial oxidation of aromatic hydrocarbons in liquid phase - Google Patents
Coal flotation reagents prodn - by partial oxidation of aromatic hydrocarbons in liquid phaseInfo
- Publication number
- DE2234045A1 DE2234045A1 DE2234045A DE2234045A DE2234045A1 DE 2234045 A1 DE2234045 A1 DE 2234045A1 DE 2234045 A DE2234045 A DE 2234045A DE 2234045 A DE2234045 A DE 2234045A DE 2234045 A1 DE2234045 A1 DE 2234045A1
- Authority
- DE
- Germany
- Prior art keywords
- aromatic hydrocarbons
- reagents
- air
- hydrocarbons
- flotation
- 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
Links
- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 17
- 238000005188 flotation Methods 0.000 title claims abstract description 15
- 150000004945 aromatic hydrocarbons Chemical class 0.000 title claims abstract description 14
- 239000003245 coal Substances 0.000 title claims abstract description 13
- 230000003647 oxidation Effects 0.000 title claims description 9
- 238000007254 oxidation reaction Methods 0.000 title claims description 9
- 239000007791 liquid phase Substances 0.000 title abstract 2
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 9
- 150000001298 alcohols Chemical class 0.000 claims abstract description 5
- 239000003054 catalyst Substances 0.000 claims abstract description 4
- 150000001299 aldehydes Chemical class 0.000 claims abstract description 3
- 150000002432 hydroperoxides Chemical class 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000654 additive Substances 0.000 abstract description 3
- 150000001896 cresols Chemical class 0.000 abstract description 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000007859 condensation product Substances 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/008—Organic compounds containing oxygen
-
- 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
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/006—Hydrocarbons
-
- 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
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
-
- 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
- B03D1/08—Subsequent treatment of concentrated product
-
- 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
- B03D1/12—Agent recovery
-
- 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
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/08—Coal ores, fly ash or soot
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Description
Verfanren zum Gewinnen von Reagenzien für die Flotation von Kohle. Conduit for obtaining reagents for flotation of coal.
Die Erfindung bezieht sich auf ein Verfahren zum Gewinnen von Reagenzien für die Flotation von Kohle bei dem aromatiscne Kohlenwasserstoffe mit oder ohne ungesättigte Verbindungen in flüssigem Zustand oxydiert werden. Bei derartigen Verfahren kann von Mischungen aromatischer Kohlenwasserstoffe oder technisch reinen Kohlenwasserstoffen ausgegangen werden, wobei die Oxydation unter atnlosphärischenl oder höherem Druck in Anwesenheit oder Abwesenheit eines die Oxydation fördernden Katalysators mit Luft sauerstoff oder Ozon als Oxydationsmittel durchgeführt werden kann.The invention relates to a method for collecting reagents for the flotation of coal with aromatic hydrocarbons with or without unsaturated compounds are oxidized in the liquid state. With such procedures can be made from mixtures of aromatic hydrocarbons or technically pure hydrocarbons be assumed, the oxidation under atnlospherischenl or higher pressure in the presence or absence of an oxidation promoting catalyst Air oxygen or ozone can be carried out as an oxidizing agent.
r:s ist bekannt, dass die Wirksamkeit von aromatischen Kohlenwasserstoffen oder von Mischungen aromatischer Kohlenwasserstoffe (und allgemein von nicht-polaren Verbindungen) als Reagenzien für die Flotation direkt in Beziehung steht zu der Fähigkeit, eine möglichst grosse Menge an Luft in der Trübe zu verteilen. Die Wirksamkeit als Reagens -ist um so grösser je grösser die Menge an Luft ist deren Verteilung in der Trübe das Reagens bewirken kann.r: s is known to be the effectiveness of aromatic hydrocarbons or of mixtures of aromatic hydrocarbons (and generally of non-polar Compounds) as reagents for flotation is directly related to the Ability to distribute the largest possible amount of air in the turbidity. The effectiveness As a reagent, the greater the amount of air, the greater is its distribution can cause the reagent in the turbidity.
.s ist auch bekannt dass ein Zusatz an die Oberflächen aktivierenden Mitteln, wie Kresolen, höheren Alkoholen u.dgl.It is also known that an additive to the surfaces activates Agents such as cresols, higher alcohols and the like.
zu Mischungen aromatischer Kohlenwasserstoffe oder technisch reinen aromatischen Kohlenwasserstoffen (oder allgemein nicht-polaren Verbindungen) deren Wirksamkeit als Reagenzien für die Flotation erhöht, da durch derartige Zusätze die Menge an Luft vergrössert wird, die die ReaS;enzien in der Trübe zu verteilen fähig sind. Auf diese Weise werden übliche Reagenzien für die Flotation von Kohle hergestellt.to mixtures of aromatic hydrocarbons or technically pure aromatic hydrocarbons (or generally non-polar compounds) their Effectiveness as reagents for flotation increases, as such additives the amount of air that distributes the reagents in the turbidity is increased are capable. In this way, common reagents for the flotation of coal manufactured.
Die-Erfindung besteht bei einem Verfahren der eingangs genannten Art darin, dass Mischungen aromatischer Kohlenwasserstoffe oder technisch reine Kohlenwasserstoffe mit Luft, Sauerstoff oder Ozon unter ati-nosphärischem oder höherem Druck in Anwesenheit oder Abwesenheit eines Katalysators einer teilweisen Oxydation zu Hydroperoxyden, Aldehyden,Alkoholen und Getanen unterworfen werden wobei die Wirksamkeit der so gewonnenen Reagenzien für das Verteilen von Luft in der Trübe und damit die Flotation der Kohle von dem erreichten Grad der Oxydation abhängt, der bei einer bestimmten Dauer der Oxydation durch das die Kohlenwasserstoffe durchströmende Volumen an Sauerstoff, , die angewandte Temperatur und die Struktur der.The invention consists in a method of the type mentioned at the beginning in that mixtures of aromatic hydrocarbons or technically pure hydrocarbons with air, oxygen or ozone under atmospheric or higher pressure in the presence or absence of a catalyst for partial oxidation to hydroperoxides, Aldehydes, alcohols and done are subjected to the effectiveness of the so obtained reagents for the distribution of air in the pulp and thus the flotation of the coal depends on the degree of oxidation attained, which occurs in a given Duration of the oxidation due to the volume of oxygen flowing through the hydrocarbons, , the temperature used and the structure of the.
Kohlenwasserstoffe bestimmt ist.Hydrocarbons is determined.
Nachstehend ist ein Ausführungsbeispiel für das Verfahren nach der Erfindung und die Anwendung des dabei gewonnenen Reagens bei der Flotation von Kohle näher beschrieben.The following is an exemplary embodiment of the method according to FIG Invention and the use of the reagent obtained in the flotation of coal described in more detail.
Das bei der Ausführung des Verfahrens nach der Erfindung verwendete Gerät bestand aus folgenden Einzelteilen, a) einem zylindrischen Reaktionsgefäss mit elektrischer Beheizung und automatischer Temperaturkontrolle, dessen Höhe das Fünffache seines Innendurchmessers betrug, b) einem Kühler mit einem Sammelgefäss zur Aufnahme der Kondensationsprodukte, c) einem Gaszänler.That used in carrying out the method according to the invention The device consisted of the following items, a) a cylindrical reaction vessel with electric heating and automatic temperature control, the level of which is the Five times its internal diameter, b) a cooler with a collecting vessel for taking up the condensation products, c) a gas meter.
d) einem Kompresser.d) a compressor.
In das Reaktionsgefäss wurden zwei Liter (1.740 Gramm) einer Praktion aromatischer Kohlenwasserstoffe mit oder ohne ungesättigte Verbindungen gefüllt. Hierbei handelte es sich um eine Fraktion deren Destillation (bestimmt nach dem Engler-Verfahren) bei 150 Grad C zu 5% und bei 180 Grad C zu 95% erfolgt. Die Dichte dieser Fraktion betrug 0,87 bei 20 Grad C.Two liters (1,740 grams) of a praction were placed in the reaction vessel filled with aromatic hydrocarbons with or without unsaturated compounds. This was a fraction whose distillation (determined according to the Engler process) at 150 degrees C to 5% and at 180 degrees C to 95%. The concentration this fraction was 0.87 at 20 degrees C.
Die Temperatur in dem Reaktionsgefäss wurde wahrend aes Verfahrens ständig zwischen 130 und 135 Grad C gehalten.The temperature in the reaction vessel was increased during the procedure constantly kept between 130 and 135 degrees C.
.5 wurden ständig 150 Liter Luft pro Stunde durch das Reaktionsgefäse hindurchgeleitet. Die Luftzufuhr wurde nach 32 Stunden geschlossen. Das Sammelgefäss nahem die Kondensationsprodukte, die zuvor von Wasser befreit wurden..5 were constantly 150 liters of air per hour through the reaction vessel passed through. The air supply was shut off after 32 hours. The collecting vessel near the condensation products, which were previously freed from water.
auf. Danach wurden 1.850 Granim der oxydierten londensationsprodukte abgezogen.on. After that, 1,850 grains of oxidized condensation products became deducted.
Der Flotationsversuch wurde in einem automatischen Wenco-Gerät. Modell FAG, mit einem Fassungsvermögen von 2,5 Litern also einem Gerät in Laboratoriumsgrösse,durcheführt. Für den Flotationsversuch wurde feinkörnige Rohkohle mit einer maximalen Korngrösse von 1 mm und einen Aschegehalt von 22.4 % verwendet.The flotation experiment was carried out in an automatic Wenco device. model FAG, with a capacity of 2.5 liters, a device the size of a laboratory. Fine-grained raw coal with a maximum grain size was used for the flotation test of 1 mm and an ash content of 22.4% were used.
Mit dieser feinkörnigen Rohkohle wurden 2,5 Liter einer Trübe init einer Konzentration von 25% (250 Gramm Rohkohle auf einen Liter) hergestellt und in die Zelle des Wenco-Gerätes eingefüllt.With this fine-grained raw coal, 2.5 liters of a slurry were init a concentration of 25% (250 grams of raw coal per liter) and filled into the cell of the Wenco device.
Als Reagens diente das in dem vorher beschriebenen Verfahren gewonnene Kondensationsprodukt, das in einer Menge von 600 Gramm je Tonne Rohkohle zugesetzt wurde.The reagent obtained in the method described above was used Condensation product added in an amount of 600 grams per ton of raw coal became.
Der Flotationsversuch wurde in sechs Stufen durchgeführt und zwar mit einer Zeit der Einwirkung von 1 min.je Stufe Die bei dem Flotationsversuch erhaltenen Ergebnisse sind in der folgenden Tabelle aufgeführt.The flotation test was carried out in six stages with an exposure time of 1 minute per stage The obtained in the flotation test Results are shown in the table below.
'TBBELLE Nr.der Zeit der Konzentrate angesammelte Konzentrate Zelle - Einwirkung Gewicht Gewicht Asche Gewicht Asche Gramm % % % % 1 1 min. 215 34,4 7,2 34,4 7,2 2 1 min. 102,5 16,4 8,5 50,8 7,5 3 1 min. 63,75 10,2 9,2 61 7,8 4 1 min 52,5 8,4 10,4 69,4 8,2 5 1 min. 32,5 5,2 12,2 74,6 8,4 6 1 min. 20,63 3,3 166 77,9 8,8 Rückstand 138,12 22,1 70,2 'TBBELLE No. of the time the concentrates accumulated concentrates cell - Action weight weight ash weight ash gram%%%% 1 1 min. 215 34.4 7.2 34.4 7.2 2 1 min. 102.5 16.4 8.5 50.8 7.5 3 1 min. 63.75 10.2 9.2 61 7.8 4 1 min 52.5 8.4 10.4 69.4 8.2 5 1 min. 32.5 5.2 12.2 74.6 8.4 6 1 min. 20.63 3.3 166 77.9 8.8 backlog 138.12 22.1 70.2
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES393206A ES393206A1 (en) | 1971-07-12 | 1971-07-12 | Procedure for obtaining a reagent for the floating of carbon by oxidation in liquid phase of aromatic hydrocarbons with or without unsaturated compounds. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2234045A1 true DE2234045A1 (en) | 1973-01-25 |
Family
ID=8458771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2234045A Pending DE2234045A1 (en) | 1971-07-12 | 1972-07-11 | Coal flotation reagents prodn - by partial oxidation of aromatic hydrocarbons in liquid phase |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2234045A1 (en) |
| ES (1) | ES393206A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4770767A (en) * | 1987-05-06 | 1988-09-13 | The Dow Chemical Company | Method for the froth flotation of coal |
| US4820406A (en) * | 1987-05-06 | 1989-04-11 | The Dow Chemical Company | Method for the froth flotation of coal |
-
1971
- 1971-07-12 ES ES393206A patent/ES393206A1/en not_active Expired
-
1972
- 1972-07-11 DE DE2234045A patent/DE2234045A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4770767A (en) * | 1987-05-06 | 1988-09-13 | The Dow Chemical Company | Method for the froth flotation of coal |
| US4820406A (en) * | 1987-05-06 | 1989-04-11 | The Dow Chemical Company | Method for the froth flotation of coal |
Also Published As
| Publication number | Publication date |
|---|---|
| ES393206A1 (en) | 1973-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHJ | Non-payment of the annual fee |