CN102208224A - Method for solidifying radioactive boron-containing residual distillate by sulphoaluminate cement - Google Patents
Method for solidifying radioactive boron-containing residual distillate by sulphoaluminate cement Download PDFInfo
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- CN102208224A CN102208224A CN2011101308726A CN201110130872A CN102208224A CN 102208224 A CN102208224 A CN 102208224A CN 2011101308726 A CN2011101308726 A CN 2011101308726A CN 201110130872 A CN201110130872 A CN 201110130872A CN 102208224 A CN102208224 A CN 102208224A
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- CN
- China
- Prior art keywords
- cement
- raffinate
- sulphate aluminium
- containing residual
- aluminium cement
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Classifications
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for solidifying radioactive boron-containing residual distillate by sulphoaluminate cement, and belongs to the technical field of solidifying radioactive waste by cement. The method comprises the following steps of: mixing the sulphoaluminate cement, zeolite, lime and an early strength agent uniformly; stirring the mixture and the radioactive boron-containing residual distillate for 3 minutes in a stirring boiler; and transferring the stirred mixture into a mould with the specification of phi 50mm*50mm and curing for 28 days to obtain a solidified body. By the method for solidifying the boron-containing residual distillate, the capacity of the residual distillate in the solidified body reaches 60 to 65 percent and the solidified body has relatively high compressive strength and meets the national standard of GR14569.1-2011.
Description
Technical field
The invention belongs to radioactive waste cement solidification technical field, be specifically related to a kind of sulphate aluminium cement and solidify the method that the radioactivity boracic steams raffinate.
Background technology
A loop need be added boric acid and controlled reaction rate in the process of pressurized-water reactor nuclear power plant operation, and also can add a large amount of BASs to reactor core guarantee security when reloading or overhaul.When no longer needing, B solution is filled and discharge, and produced the radioactivity borate waste solution with deionized water.These borate waste solutions are through after the evaporation process, and most of nucleic all is enriched to and steams in the raffinate, forms the radioactivity boracic and steams raffinate.The pressurized-water reactor nuclear power plant of a million kilowatt discharges 23m every year approximately
3The steaming raffinate of boracic 4% (radiation protection, 1995,15 (1): 33-41).After these steaming raffinates generally pass through cement solidification, form the firming body of stable performance, carry out final disposal.Steam the solidified cement body stable performance of raffinate, but the existence of boron may cause the setting time of cement solidification long, and then influence the intensity of firming body and the containing amount of refuse.
Qinshan two nuclears and Daya Bay nuclear power plant adopt the concentrate of cement solidification PROCESS FOR TREATMENT boracic 40g/L, and recipe ingredient comprises Portland cement, sand and lime, and its containing amount is about 40%.00100596.0 number patent disclosure a kind of cement solidification method of borate waste solution, the cement kind of use can be the potpourri of portland cement, portland cement and blast-furnace cement potpourri, portland cement and cigarette ash.In waste liquid, add alkaline metal and alkaline earth metal compound earlier, again waste liquid is dried to powder, carry out cement solidification afterwards.This technology can improve the containing amount of waste liquid in firming body, but the operation steps complexity, cost is higher.201010269158.0 number patent is used portland cement or sulphate aluminium cement, the admixture sodium silicate solidifies borate waste solution, and the containing amount is 45%～55%.
In recent years, use the research that sulphate aluminium cement solidifies radioactive waste that report (atomic energy science technology, 2006,40 (3): 288-291) are arranged more.The main clinker mineral anhydrous calcium sulphoaluminate (3CaO3Al2O3CaSO4) of sulphate aluminium cement makes cement have the advantage of strong, high-strength, freeze proof, impervious, corrosion-resistant, low basicity early.Zeolite is the hydrous alumino silicates mineral of gang's frame columnar structure, contains alkali and alkaline-earth metal ions at its crystallization skeleton, gets in touch fragility between kation and skeleton, has very big adsorption capacity and extremely strong ion to hand over behaviour's ability to other kation; When it is filled in the intergranular space of cement-hydrate, the cohesive force of refinforced cement and density (Nuclear Science And Engineering, 1994,14 (2): 134-140 to a certain extent; Radiation protection, 1982,2 (5): 352-360).Admixture the sulphate aluminium cement firming body of zeolite, the leaching rate of Cs and Co greatly reduces (atomic energy science technology, 2006,40 (3): 288-291), being no more than 10% addition content also helps and improves firming body intensity and improve its micromechanism (University Of Ji'nan's journal (natural science edition), 2006,20 (4): 293-295).
Summary of the invention
The purpose of this invention is to provide a kind of sulphate aluminium cement and solidify the method that the radioactivity boracic steams raffinate, solve when solidifying radioactivity boracic steaming raffinate the problem that refuse containing amount is low, setting time is long.
A kind of sulphate aluminium cement solidifies the method that the radioactivity boracic steams raffinate, sulphate aluminium cement, zeolite, lime, early strength agent are mixed, steam raffinate with the radioactivity boracic and in agitated kettle, stir 3min, move in the mould of Φ 50mm * 50mm, maintenance 28d, curing temperature is 25 ± 5 ℃, relative humidity 〉=90%.
The usage ratio that described radioactivity boracic steams raffinate, sulphate aluminium cement, zeolite, lime, early strength agent is: (0.4～0.5) L: 1000g: (30～70) g: (100～150) g: (20～30) g.
Described zeolite is a clinoptilolite; The principal ingredient of described early strength agent is Li
2CO
3
Beneficial effect of the present invention: when using method of the present invention to solidify boracic steaming raffinate, steam raffinate containing amount in the firming body and reach 60%～65%, firming body can obtain high compression strength, satisfies GB GB14569.1-2011.
Embodiment
The present invention will be further described with specific embodiment below.
Embodiment 1
(principal ingredient is Li with 1000g sulphate aluminium cement, 50g clinoptilolite, 110g lime, 20g early strength agent
2CO
3) mix, steam raffinate with 0.45L radioactivity boracic and in agitated kettle, stir 3min, move in the mould of Φ 50mm * 50mm, maintenance 28d, curing temperature is 25 ± 5 ℃, relative humidity 〉=90% is made firming body.Calculate the cumulative volume of firming body and calculate refuse containing amount in the firming body with this, obtaining numerical value is 60%.
Embodiment 2
(principal ingredient is Li with 1000g sulphate aluminium cement, 50g clinoptilolite, 110g lime, 20g early strength agent
2CO
3) mix, steam raffinate with 0.45L radioactivity boracic and in agitated kettle, stir 3min, move in the mould of Φ 50mm * 50mm, maintenance 28d, curing temperature is 25 ± 5 ℃, relative humidity 〉=90% is made firming body.The firming body upper and lower surface is suitably polished with sand paper, keep upper and lower surface parallel, then in its unconfined compressive strength of pressure test aircraft measurements.Recording 28d compressive strength is 31.0MPa.
Embodiment 3
(principal ingredient is Li with 1000g sulphate aluminium cement, 40g clinoptilolite, 110g lime, 25g early strength agent
2CO
3) mix, steam raffinate with 0.42L radioactivity boracic and in agitated kettle, stir 3min, move in the mould of Φ 50mm * 50mm, maintenance 28d, curing temperature is 25 ± 5 ℃, relative humidity 〉=90% is made firming body.The containing amount of firming body and 28d compressive strength numerical value are respectively 60% and 29.7MPa.
Embodiment 4
(principal ingredient is Li with 1000g sulphate aluminium cement, 40g clinoptilolite, 120g lime, 30g early strength agent
2CO
3) mix, steam raffinate with 0.5L radioactivity boracic and in agitated kettle, stir 3min, move in the mould of Φ 50mm * 50mm, maintenance 28d, curing temperature is 25 ± 5 ℃, relative humidity 〉=90% is made firming body.The containing amount of firming body and 28d compressive strength numerical value are respectively 65% and 28.3MPa.
Claims (3)
1. a sulphate aluminium cement solidifies the method that the radioactivity boracic steams raffinate, it is characterized in that, sulphate aluminium cement, zeolite, lime, early strength agent are mixed, steam raffinate with the radioactivity boracic and in agitated kettle, stir 3min, move in the mould of Φ 50mm * 50mm, maintenance 28d, curing temperature is 25 ± 5 ℃, relative humidity 〉=90%.
2. solidify the method that the radioactivity boracic steams raffinate according to the described a kind of sulphate aluminium cement of claim 1, it is characterized in that the usage ratio that described radioactivity boracic steams raffinate, sulphate aluminium cement, zeolite, lime, early strength agent is: (0.4～0.5) L: 1000g: (30～70) g: (100～150) g: (20～30) g.
3. solidify the method that the radioactivity boracic steams raffinate according to the described a kind of sulphate aluminium cement of claim 1, it is characterized in that described zeolite is a clinoptilolite; The principal ingredient of described early strength agent is Li
2CO
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101308726A CN102208224A (en) | 2011-05-19 | 2011-05-19 | Method for solidifying radioactive boron-containing residual distillate by sulphoaluminate cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101308726A CN102208224A (en) | 2011-05-19 | 2011-05-19 | Method for solidifying radioactive boron-containing residual distillate by sulphoaluminate cement |
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| CN102208224A true CN102208224A (en) | 2011-10-05 |
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| CN2011101308726A Pending CN102208224A (en) | 2011-05-19 | 2011-05-19 | Method for solidifying radioactive boron-containing residual distillate by sulphoaluminate cement |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105825906A (en) * | 2016-03-30 | 2016-08-03 | 中国科学院上海应用物理研究所 | Method for solidifying cement with radioactive fluorine-containing waste liquor |
| CN110491537A (en) * | 2019-06-20 | 2019-11-22 | 中国辐射防护研究院 | A kind of cement solidification processing method of radioactive waste |
| CN112592078A (en) * | 2020-12-28 | 2021-04-02 | 山东大学 | Solid waste based sulphoaluminate cement curing substrate of medium-low radioactive nuclear waste and preparation method thereof |
| CN115159933A (en) * | 2022-06-30 | 2022-10-11 | 清华大学 | Cement curing formula and curing method for radioactive organic waste liquid wet oxidation residual liquid |
-
2011
- 2011-05-19 CN CN2011101308726A patent/CN102208224A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 孙奇娜等: "模拟放射性含硼废液的水泥固化研究", 《原子能科学技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105825906A (en) * | 2016-03-30 | 2016-08-03 | 中国科学院上海应用物理研究所 | Method for solidifying cement with radioactive fluorine-containing waste liquor |
| CN105825906B (en) * | 2016-03-30 | 2017-12-08 | 中国科学院上海应用物理研究所 | A kind of fluorine-containing waste liquid cement solidification method of radioactivity |
| CN110491537A (en) * | 2019-06-20 | 2019-11-22 | 中国辐射防护研究院 | A kind of cement solidification processing method of radioactive waste |
| CN110491537B (en) * | 2019-06-20 | 2023-06-23 | 中国辐射防护研究院 | Cement curing treatment method for radioactive waste |
| CN112592078A (en) * | 2020-12-28 | 2021-04-02 | 山东大学 | Solid waste based sulphoaluminate cement curing substrate of medium-low radioactive nuclear waste and preparation method thereof |
| CN115159933A (en) * | 2022-06-30 | 2022-10-11 | 清华大学 | Cement curing formula and curing method for radioactive organic waste liquid wet oxidation residual liquid |
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Application publication date: 20111005 |