DE274781C - - Google Patents
Info
- Publication number
- DE274781C DE274781C DENDAT274781D DE274781DA DE274781C DE 274781 C DE274781 C DE 274781C DE NDAT274781 D DENDAT274781 D DE NDAT274781D DE 274781D A DE274781D A DE 274781DA DE 274781 C DE274781 C DE 274781C
- Authority
- DE
- Germany
- Prior art keywords
- silicates
- phosphates
- thorium
- acid
- silicides
- 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.)
- Active
Links
- 235000021317 phosphate Nutrition 0.000 claims description 6
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 6
- 150000004760 silicates Chemical class 0.000 claims description 6
- IKNAJTLCCWPIQD-UHFFFAOYSA-K cerium(3+);lanthanum(3+);neodymium(3+);oxygen(2-);phosphate Chemical compound [O-2].[La+3].[Ce+3].[Nd+3].[O-]P([O-])([O-])=O IKNAJTLCCWPIQD-UHFFFAOYSA-K 0.000 claims description 5
- 229910052590 monazite Inorganic materials 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 230000029087 digestion Effects 0.000 claims description 3
- 229910021332 silicide Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 230000002285 radioactive Effects 0.000 claims description 2
- 239000003638 reducing agent Substances 0.000 claims 1
- 229910052776 Thorium Inorganic materials 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- ZSLUVFAKFWKJRC-UHFFFAOYSA-N thorium Chemical compound [Th] ZSLUVFAKFWKJRC-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N phosphine Chemical class P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- -1 phosphorus hydrogen compounds Chemical class 0.000 description 2
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 2
- 229910052705 radium Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- YTHCQFKNFVSQBC-UHFFFAOYSA-N Magnesium silicide Chemical compound [Mg]=[Si]=[Mg] YTHCQFKNFVSQBC-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 229910021346 calcium silicide Inorganic materials 0.000 description 1
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002757 inflammatory Effects 0.000 description 1
- 229910021338 magnesium silicide Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F15/00—Compounds of thorium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Luminescent Compositions (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE \2m. GRUPPECLASS \ 2m. GROUP
Dr. ERICH EBLER in HEIDELBERG.Dr. ERICH EBLER in HEIDELBERG.
Bei der Verarbeitung von Monazitsand ist das gewünschte Ziel: i. in möglichst einfacher und rationeller Weise das Thorium in Lösung zu bringen, 2. die Phosphorsäure vollständig vom Thorium zu trennen, und 3. das im Monazitsand enthaltene Radium und Mesothorium abzuscheiden. Dies wird nach bekannten Verfahren nur durch Prozesse erreicht, bei denen durch äußere Wärmezufuhr sehr hohe Temperaturgrade erreicht werden müssen und bei denen die Trennung der Phosphorsäure ein Teil für sich ist.When processing monazite sand, the desired goal is: i. in the simplest possible way and rationally to bring the thorium into solution, 2. the phosphoric acid completely to separate from thorium, and 3. the radium and mesothorium contained in the monazite sand to be deposited. According to known methods, this is only achieved by processes in which external heat is supplied very high temperatures must be reached and at which the separation of the phosphoric acid is a part of itself.
Nach dem vorliegenden Verfahren wird die Aufschließung von radioaktiven Phosphaten, Silikaten usw. ohne die Notwendigkeit äußerer Wärmezufuhr durch die beim Zünden von selbst vollständig verlaufende Reduktion der Phosphate, Silikate usw. durch Metalle, wie Magnesium, Kalzium, Aluminium bewirkt.According to the present process, the digestion of radioactive phosphates, Silicates etc. without the need for external heat input due to the ignition of even complete reduction of phosphates, silicates, etc. by metals, such as Magnesium, calcium, aluminum effects.
Mit dem Vorteil, daß hierdurch in kürzester Frist durch eine selbsttätig verlaufende Reaktion die schwer löslichen Phosphate, Silikate usw. der Erden und insbesondere des Thoriums in verdünnter Säure leicht lösliche Phosphide bzw. Silicide übergeführt werden, ist der weitere Vorzug verbunden, daß bei dem der autogenen Aufschließung folgenden Lösungsprozeß die weitaus größte Menge des Phosphors in Form von Phosphorwasserstoffverbindungen entweicht, wodurch eines der schwierigsten Probleme der Thoriumdarstellung, nämlich die vollständige Befreiung des Thoriums von Phosphorsäure, wesentlich erleichtert wird.With the advantage that this results in an automatic reaction in the shortest possible time the poorly soluble phosphates, silicates, etc. of the earth and especially of thorium are easily soluble in dilute acid Phosphides or silicides are converted, the further advantage is connected that with the dissolution process following the autogenous decomposition by far the largest amount of Phosphorus escapes in the form of phosphorus hydrogen compounds, which is one of the most difficult problems of the thorium representation, namely the complete liberation of the thorium by phosphoric acid, is made much easier.
Aus den gasförmig entweichenden Phosphorwasserstoffverbindungen lassen sich in bekannter Weise wertvolle Phosphorverbindungen erzeugen. Ferner läßt sich durch geeignete Wahl der bei der autogenen Reduktion zu verwendenden Metallmenge auch bewirken, daß ein wesentlicher Teil des dem Monazit beigemischten Quarzsandes zu Siliciden (Kalzium- oder Magnesiumsilicid) reduziert wird. Bei der der Aufschließung folgenden Behandlung mit Wasser und Säure entweicht dann ein entsprechender Teil des Siliciums in Form von Silicium wasser stoff en, was zur Folge hat, daß die Menge des beim Behandeln mit sulfathaltigen Agentien verbleibenden, das gesamte Mesothorium und Radium enthaltenden Rückstandes eine kleinere wird.From the gaseous hydrogen phosphide compounds can be in known Way to produce valuable phosphorus compounds. Furthermore, by a suitable choice of the autogenous reduction amount of metal to be used also cause a substantial part of the monazite added quartz sand is reduced to silicides (calcium or magnesium silicide). During the treatment with water and acid that follows the digestion, it then escapes A corresponding part of the silicon in the form of silicon hydrogen, which results in that the amount of the remaining after treating with sulfate-containing agents, the whole The residue containing mesothorium and radium becomes a smaller one.
20 kg Monazitsand werden mit 10 kg Magnesiumpulver innig gemischt. Dieses Gemisch wird durch die Entzündungsmasse vermittels Magnesiumbandes zur Entzündung gebracht und die Reaktionsmasse nach dem Abkühlen fein gepulvert, darauf mit Wasser zu einem Brei angerührt und in verdünnte Säure eingetragen und alsdann mit heißer Säure erschöpfend ausgezogen. Dabei entweicht der Phosphor als Phosphorwasserstoff. Die sauren Auszüge enthalten das Thorium, welches nach dem Einengen der sauren Lösung in bekannter Weise niedergeschlagen wird.20 kg of monazite sand are intimately mixed with 10 kg of magnesium powder. This mixture is caused to ignite by the inflammatory mass by means of a magnesium band and the reaction mass is finely powdered after cooling, then mixed with water to a paste and in dilute acid entered and then exhausted exhaustively with hot acid. The escapes Phosphorus as hydrogen phosphide. The acid extracts contain the thorium, which after the concentration of the acidic solution is precipitated in a known manner.
Claims (1)
Verfahren zur Aufschließung von radioaktiven Phosphaten, Silikaten (Monazitsand) usw., dadurch gekennzeichnet, daß man die Phosphate, Silikate usw. mit solchen metallischen Reduktionsmitteln, wiePatent claim:
Process for the digestion of radioactive phosphates, silicates (monazite sand), etc., characterized in that the phosphates, silicates, etc. with such metallic reducing agents as
Publications (1)
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Family
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Family Applications (1)
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Country Status (1)
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100159101A1 (en) * | 2007-07-26 | 2010-06-24 | Cargill, Incorporated | Process for modifying starches |
US20100239736A1 (en) * | 2009-03-23 | 2010-09-23 | Lou Henry | Multi-edge baking pan |
US20100239729A1 (en) * | 2009-03-23 | 2010-09-23 | Lou Henry | Multi-edge baking pan |
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0
- DE DENDAT274781D patent/DE274781C/de active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100159101A1 (en) * | 2007-07-26 | 2010-06-24 | Cargill, Incorporated | Process for modifying starches |
US20100239736A1 (en) * | 2009-03-23 | 2010-09-23 | Lou Henry | Multi-edge baking pan |
US20100239729A1 (en) * | 2009-03-23 | 2010-09-23 | Lou Henry | Multi-edge baking pan |
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