BORATE GLASS WASTEFORM TO IMMOBILIZE RARE-EARTH WASTE AND MANUFACTURING METHOD THEREOF

28-11-2018 дата публикации
Номер:
KR1020180126820A
Принадлежит:
Контакты:
Номер заявки: 00-17-102061714
Дата заявки: 18-05-2017

[1]

The substrates forming a radioactive rare earth waste into fine old painting body and a method for securing a boric acid number bath glass are disclosed.

[2]

Wet process and dry the disposal reprocessing technique classification process are disclosed. Use wet process (PUREX) nitric acid, are dissolved in an organic solvent or the like uranium and plutonium separating techniques are disclosed. The additional driver development nuclear weapons like wet process in order to be used, in one aspect Korean reading is not allowed and the disposal techniques be reprocessing by a wet process.

[3]

(Pyro processing) is performed to the process fine dry is located between the molten salt electrolysis techniques are disclosed. Each dry process additional capillary electrochemical properties of materials only in one aspect in which the driver cannot be techniques disclosed.

[4]

In radioactive waste to the process fine divided into by discriminating occurs. In a pretreatment process Tc, I such as volatile quantification, electrolytic reduction is carried out in Cs, Sr fission products including LiCl salt group such as 1 - 2, including LiCl-a KCl eutectic salt/number in rare earth species and analytical species each correct answer refining [lyen process generated waste. In LiCl-a KCl eutectic salt containing double refining/number [lyen process number can be re-used in a stand-alone to the process control signal inputted from an alkaline metal oxide species. I.e., discard is equal to said final step to form rare earth oxide waste is subject.

[5]

Said boron containing radio active waste radioactive rare earth waste of the existing method invention in Korean publicized patent number 10 - 2010 - 0133089 call number for Korean technique is high pressure liquid coolant nuclear Institute (radioactive rare earth waste containing ceramic old painting body manufacturing method and the number bath density, thermal stability and improved ceramic old painting body resistance ) on call (radioactive rare earth waste vitrification method) be publicized patent number 10 - 2016 - 0049564 invention in Korean Korean nuclear water. The rare earth oxide nuclear Korean Institute (Zinc Titante) number from the second rare earth monazite (RE-a monazite) ZIT ceramic old painting body high pressure liquid coolant to him. The leaching and physicochemical and nickel. But process is reinforced by a non-continuous process and the pin is a chassis make it difficult point. Invention in Korean alumina containing glass dissolution chamber number applied to nuclear water glass amount 20 weight % rare earth waste but degree rain.

[6]

The vitrification process molten glass for ionizing the air viscosity of 10 - 100 poise conditions are disclosed. However rare earth glass number having tertiary process for preparing viscosity height in 2000. The rare earth waste melting furnace melting temperature increases the cost of incomplete combustion when carrying capacity is likely disclosed.

[7]

The, amount applied to rare earth glass temperatures can be maintained and a boric acid glass old painting body etc. need enhanced number bath method.

[8]

The substrates, glass radioactive rare earth waste amount applied to old painting body temperatures can be maintained for a broadcast receiver number and number boric acid glass bath method.

[9]

In addition, the present invention techniques if specific number is descriptive and not one number to number mentioned above, specific number are not in yet another technique referred in the art to clearly understand the present invention from the substrate is provided below may be person with skill in the art are disclosed.

[10]

In the embodiment according to one of the present invention glass dissolution boric acid, boric oxide (B2 O3 ), Calcium oxide (CaO) and aluminum oxide (Al2 O3 ) Including a glass medium comprises radioactive rare earth waste.

[11]

the glass medium, 35 mole % or more of said 60 mole % hereinafter boric oxide, 10 mole % or more of 1 mole % or more of said calcium oxide and 25 mole % hereinafter 20 mole % hereinafter can be said resin.

[12]

1 Weight % or more can be included with the radioactive rare earth waste is 60 weight % hereinafter.

[13]

Said waste is radioactive rare earth, column other [nem (Lanthanum, La), cesium (Cesium, Ce), praseodymium (Praseodymium, Pr), neodymium (Neodymium, Nd), promethium (Promethium, Pm), samarium (Samarium, Sm), europium (Europium, Eu), gadolinium (Gadolinium, Gd), terbium (Terbium, Tb), dysprosium (Dysprosium, Dy), holmium (Holmium, Ho), erbium (Erbium, Er), thulium (Thulium, Tm), terbium (Terbium, Tb), lutetium (Lutetium, Lu) and yttrium (Yttrium, Y) comprising at least one oxide selected from the group consisting can be.

[14]

In the embodiment according to the method of the present invention other borate glass old painting body number bath, (1) in vitro radioactive rare earth waste melting furnace, (2) said radioactive rare earth waste are melted and said medium in vitro for glass melting furnace, (3) and said melt bath to melt said radioactive rare earth waste glass medium together a number and (4) said glass melt solidification old painting body comprising the following steps a number boric acid bath.

[15]

Said waste is radioactive rare earth, column other [nem (Lanthanum, La), cesium (Cesium, Ce), praseodymium (Praseodymium, Pr), neodymium (Neodymium, Nd), promethium (Promethium, Pm), samarium (Samarium, Sm), europium (Europium, Eu), gadolinium (Gadolinium, Gd), terbium (Terbium, Tb), dysprosium (Dysprosium, Dy), holmium (Holmium, Ho), erbium (Erbium, Er), thulium (Thulium, Tm), terbium (Terbium, Tb), lutetium (Lutetium, Lu) and yttrium (Yttrium, Y) comprising at least one oxide selected from the group consisting can be.

[16]

Said (3) 1% by weight or more and 60 weight % hereinafter step said melt spinnability rare earth waste, the other said be a glass medium.

[17]

Said (2) step said glass medium, boric oxide (B2 O3 ), Calcium oxide (CaO) and aluminum oxide (Al2 O3 ) Which, silicon oxide (SiO2 ) Thereof can not.

[18]

The, said (3) step said melt, said 35 mole % or more of 60 mole % hereinafter boric oxide, 10 mole % or more of 1 mole % or more of said 20 mole % hereinafter 25 mole % hereinafter said calcium oxide and aluminum oxide and including said glass medium, said other be a radioactive rare earth waste.

[19]

Said (3) step, said temperature within said furnace and melting said 1400 °C hereinafter to 1100 °C or more LNG can be radioactive rare earth waste glass medium.

[20]

The substrates can be stably melted and the radioactive rare earth waste effective in volume are disclosed. In addition borosilicate processing can occur when melting glass is used as the blocking can rise by boric acid.

[21]

Figure 1 of the present invention example experiments 1 to 4 according to actual photographs a boric acid glass old painting body are disclosed. Figure 2 shows a graph of example 3 and 4 of the present invention X-a Ray Diffraction (XRD) pattern timing experiments also are disclosed. In the embodiment according to Figure 3 of the present invention glass old painting body thermal stability rating XRD result one boric acid are disclosed.

[22]

Hereinafter, with reference to the attached drawing of the present invention in the embodiment of the SFC are detailed as follows. Only, the substrate is described in, or component account of the functionality already publicly known, the subject matter of order to clear omitting the on-sensors other.

[23]

In the embodiment according to one of the present invention glass dissolution boric oxide (B2 O3 ), Calcium oxide (CaO) and aluminum oxide (Al2 O3 ) Including a glass medium comprises radioactive rare earth waste.

[24]

In the embodiment according to the 35 mole % or more of the glass medium 60 mole % hereinafter boric oxide, 10 mole % or more 1 mole % or more of the calcium oxide and 25 mole % hereinafter 20 mole % hereinafter can be resin. Furthermore of boric acid and other unavoidable impurities and the remaining radioactive rare earth waste glass old painting body can.

[25]

The glass medium in the borosilicate glass in the embodiment according to the silicon oxide (SiO2 ) Increasing charcoal tacky rolling, characterized does not contains silicon oxide.

[26]

The aforementioned weight percentage (% by weight) based on content mole % in terms of the unit, the amount of boric acid in old painting body weight % or more in the embodiment according to 1 weight % hereinafter 57 radioactive rare earth the waste glass can be included. In terms of the same mole %, 1 mole % or more and 22 mole % hereinafter radioactive rare earth waste is, in the embodiment 1 mole % or more the amount of glass in old painting body 22 mole % hereinafter the spinnability rare earth waste is boric acid can be included. In particular, in the embodiment including the spinnability of the high content of 50 weight % or more according to the old painting body rare earth waste glass can be boric acid number.

[27]

Radioactive rare earth waste is column other [nem (Lanthanum, La), cesium (Cesium, Ce), praseodymium (Praseodymium, Pr), neodymium (Neodymium, Nd), promethium (Promethium, Pm), samarium (Samarium, Sm), europium (Europium, Eu), gadolinium (Gadolinium, Gd), terbium (Terbium, Tb), dysprosium (Dysprosium, Dy), holmium (Holmium, Ho), erbium (Erbium, Er), thulium (Thulium, Tm), terbium (Terbium, Tb), lutetium (Lutetium, Lu) and yttrium (Yttrium, Y) oxide can be at least one material selected from the group consisting.

[28]

In the embodiment of the present invention according to other, radioactive rare earth waste melting furnace in vitro, radioactive rare earth waste are melted and glass medium in vitro for melting furnace, and radioactive rare earth waste glass medium to melt the melt bath and melt solidification together a number number number bath method step is encoded number old painting body including boric acid bath old painting body glass borate glass ball.

[29]

The in vitro radioactive rare earth waste melting furnace, such as the aforementioned column other [nem (Lanthanum, La), cesium (Cesium, Ce), praseodymium (Praseodymium, Pr), neodymium (Neodymium, Nd), promethium (Promethium, Pm), samarium (Samarium, Sm), europium (Europium, Eu), gadolinium (Gadolinium, Gd), terbium (Terbium, Tb), dysprosium (Dysprosium, Dy), holmium (Holmium, Ho), erbium (Erbium, Er), thulium (Thulium, Tm), terbium (Terbium, Tb), lutetium (Lutetium, Lu) and yttrium (Yttrium, Y) oxide including at least one substance selected from the group consisting in a series of in vitro radioactive rare earth waste so that the fused furnace are disclosed.

[30]

Melting furnace for radioactive rare earth waste are melted and glass medium in vitro, in vitro radioactive rare earth waste is on a furnace glass medium are disclosed. In the embodiment according to the boron oxide glass medium (B2 O3 ), Calcium oxide (CaO) and aluminum oxide (Al2 O3 ) Can be comprising. In addition, borosilicate glass in silicon oxide (SiO2 ) Increasing charcoal tacky rolling, silicon oxide does not contain point also are the same.

[31]

The apparatus after melting furnace and radioactive rare earth waste glass medium, melt processes for melting bath confronting the first number and the processing advances. Radioactive rare earth waste and melt bath temperature within the melting furnace step to melt the glass medium together number 1400 °C hereinafter LNG to 1100 °C or more melting furnace is charged into a glass medium number step to melt the melt bath and radioactive rare earth waste are disclosed.

[32]

The, 35 mole % or more of 60 mole % hereinafter melt glass medium present in the boric oxide, 10 mole % or more 1 mole % or more of the calcium oxide and 25 mole % hereinafter 20 mole % hereinafter can be resin. Furthermore of boric acid and other unavoidable impurities and the remaining radioactive rare earth waste glass old painting body can.

[33]

1 Weight % or more by weight of said melt or radioactive rare earth waste can be 57% hereinafter comprising, 1 mole % mole % mole % to 22 corresponding to the aforementioned is an output such as described. Glass medium and other unavoidable impurities other than the rest of the can.

[34]

Radioactive rare earth compound for borate glass Old painting body Number bath

[35]

Table 1 of the present invention in the embodiment example according to experiment 1 to experiment example 4 according to the molar ratio of waste are based on rare earth and radioactive glass medium are disclosed. Table 1 shown in each composition ((100 a-x) (0. 25 Calcium oxide (CaO)- 0. 19 Aluminum oxide (Al2 O3 ) - 0. 56 Boric oxide (B2 O3 )) - X Nd2 O3 (Mole %, x=0, 10, 20, 30)) has uniformly powder spray. 25G of alumina powder mixture packed in 30 minutes after melting crucible disposed in electrically radiational 1300 °C boric acid number was mounted glass old painting body high pressure liquid coolant.

[36]

Figure 1 shows a 1 example 1 to example 4 according to a priority table experiments experiments actual photographs and a boric acid glass old painting body, Figure 2 of the present invention example experiments 3 and 4 (XRD) pattern of X-a Ray Diffraction timing graph are disclosed. The reference also 1 and 2 also, table 1 a Nd in composition2 O3 22 Mole % (about 57% by weight) content of the melt under the cover said crystallization unit is composed can confirm it longer vitrification becomes difficult.

[37]

Molar ratioExperiment example 1Experiment example 2Experiment example 3Experiment example 4 (comparison example)
CaO25. 022. 520. 017. 5
Al2 O318. 816. 915. 013. 1
B2 O356. 250. 645. 039. 4
Nd2 O30102030
Total sum100100100100
The own glassPossiblePossiblePossibleCannot be

[38]

Radioactive rare earth compound for borate glass Old painting body Thermal stability

[39]

Radioactive rare earth compound for borate glass old painting body to analyze enthusiasm stability, for example during a method of high pressure liquid coolant to said in the embodiment 1 number corresponding to 600 and 700 °C 5 in experiment 3 boric acid glass old painting body boric acid glass old painting body was heating. Each temperature reaches time is a set time after heat treatment with leucorrhea is 1 when the-gate.

[40]

Figure 3 each prepared by the number according to the aforementioned process of experiment example thermal stability rating XRD result boric acid glass old painting body are disclosed. Also with reference to the 3, 700 °C hereinafter boric acid on old painting body even when glass is heat-treated is no change, the present invention according to boric acid can be thermally stable glass dissolution has been confirmed.

[41]

Radioactive rare earth compound for borate glass Old painting body Analysis

[42]

Table 2 includes a radioactive rare earth compound for boric acid leaching characteristics (product consistency test) a standard glass old painting body analysis based on PCT experiment results are disclosed.

[43]

Example 1 experiment example 4 in the embodiment 1 according to the aforementioned experiments testing said boric acid prepared by the number positions to 150um powder into the glass old painting body 75, 50 ml Teflon container 1. 5G 7 90 °C is immersed in 15 ml distilled water of together in a powder storage as follows. In ICP non-AES analysis of leachate sampling after the heat stored in the leached element in normal after measuring. The ice bank is not suitable in the case of experimental example 4 vitrification and leaching database not.

[44]

G/m2CaBAlNd
Experiment example 10%0. 4690. 6770. 002-
Experiment example 210%0. 4730. 4060. 016Hereinafter detection limit
Experiment example 320%0. 0730. 0670. 009Hereinafter detection limit

[45]

As a result table 2, a reference number all element 2 g/m2 Hereinafter value representing, in particular neodymium (Nd) leaching quantity of waste to be radioactive rare earth waste corresponding to the limit of detection of the analytical ICP non-AES hereinafter at a weight has been confirmed. Through, for example 1 to example 4 of the present invention experiment experiment number by radioactive waste related station number satisfies a criterion for boric acid prepared by the dissolution can be know glass leaching.

[46]

In the embodiment according to the method of the present invention in one or more old painting body and number are described with respect to the borate glass bath. According to the substrate, can be melted and radioactive waste with 57% by weight up coil effective in volume and, in addition processing can occur when melting rise borosilicate glass is used as the boric acid and boric acid by a method capable of breaking glass number bath can be a number.

[47]

In front, in the embodiment of the present invention is described and illustrated in the embodiment described the present invention refers to a specific but not limited to, wider and idea of the present invention various corrected and deforming of this technique is never reduced to the same number of person with skill in the art in the field. The, technical idea of the present invention will individually from the subjective standpoint or an modified variants are such must not or which, in the embodiment of the present invention claim are modified into the same to tell it what are disclosed.



[1]

The present disclosure relates to a borate glass wasteform to immobilize radioactive rare earth waste generated in a pyrogenic process and a manufacturing method thereof. The borate glass wasteform includes: a glass medium containing boron oxide (B_2O_3), calcium oxide (CaO), and aluminum oxide (Al_2O_3); and a radioactive rare earth waste. It is possible to maintain a process temperature.

[2]

COPYRIGHT KIPO 2019

[3]

[4]

  • (AA) Nd_2O_3 mol%



Boric oxide (B2 O3 ), Calcium oxide (CaO) and aluminum oxide (Al2 O3 ) Including a glass medium; and radioactive rare earth waste glass old painting body including boric acid.

In according to Claim 1, said glass medium, 35 mole % or more of said 60 mole % hereinafter boric oxide; 10 mole % or more of 25 mole % hereinafter said calcium oxide; and 1 mole % or more of said 20 mole % hereinafter including aluminum oxide, boric acid glass old painting body.

In according to Claim 1, 1 weight % or more by weight of said radioactive rare earth waste including 57% hereinafter, borate glass old painting body.

According to Claim 1, said radioactive rare earth waste is, column other [nem (Lanthanum, La), cesium (Cesium, Ce), praseodymium (Praseodymium, Pr), neodymium (Neodymium, Nd), promethium (Promethium, Pm), samarium (Samarium, Sm), europium (Europium, Eu), gadolinium (Gadolinium, Gd), terbium (Terbium, Tb), dysprosium (Dysprosium, Dy), holmium (Holmium, Ho), erbium (Erbium, Er), thulium (Thulium, Tm), terbium (Terbium, Tb), lutetium (Lutetium, Lu) and yttrium (Yttrium, Y) including at least one oxide selected from the group consisting, borate glass old painting body.

(1) In vitro radioactive rare earth waste melting furnace; (2) said radioactive rare earth waste are melted and said medium in vitro for glass melting furnace; (3) said radioactive rare earth waste glass medium and said melt bath to melt together step number; and (4) said glass melt solidification step number old painting body including boric acid bath, borate glass old painting body number bath method.

According to Claim 5, said radioactive rare earth waste is, column other [nem (Lanthanum, La), cesium (Cesium, Ce), praseodymium (Praseodymium, Pr), neodymium (Neodymium, Nd), promethium (Promethium, Pm), samarium (Samarium, Sm), europium (Europium, Eu), gadolinium (Gadolinium, Gd), terbium (Terbium, Tb), dysprosium (Dysprosium, Dy), holmium (Holmium, Ho), erbium (Erbium, Er), thulium (Thulium, Tm), terbium (Terbium, Tb), lutetium (Lutetium, Lu) and yttrium (Yttrium, Y) including at least one oxide selected from the group consisting, borate glass old painting body number bath method.

According to Claim 5, said (3) 57% or more by weight of said step and said melt 1 weight % hereinafter radioactive rare earth waste, said other glass medium, borate glass old painting body number bath method.

According to Claim 5, said (2) step said glass medium, boric oxide (B2 O3 ), Calcium oxide (CaO) and aluminum oxide (Al2 O3 ) Which, silicon oxide (SiO2 ) That do not include a, borate glass old painting body number bath method.

According to Claim 8, said (3) step said melt, said 35 mole % or more of 60 mole % hereinafter boric oxide; 10 mole % or more of 25 mole % hereinafter said calcium oxide; and 1 mole % or more of aluminum oxide and 20 mole % hereinafter said including said glass medium, said other radioactive rare earth waste, borate glass old painting body number bath method.

According to Claim 5, said (3) step, said furnace and said temperature within said 1400 °C hereinafter LNG to 1100 °C or more radioactive rare earth waste melting a glass medium, borate glass old painting body number bath method.



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