CA1213739A - Method of handling finely particulate waste materials for disposal - Google Patents
Method of handling finely particulate waste materials for disposalInfo
- Publication number
- CA1213739A CA1213739A CA000450651A CA450651A CA1213739A CA 1213739 A CA1213739 A CA 1213739A CA 000450651 A CA000450651 A CA 000450651A CA 450651 A CA450651 A CA 450651A CA 1213739 A CA1213739 A CA 1213739A
- Authority
- CA
- Canada
- Prior art keywords
- finely particulate
- disposal
- particulate waste
- fine
- coarse
- 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
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000005453 pelletization Methods 0.000 claims abstract 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000011236 particulate material Substances 0.000 claims description 2
- 238000005054 agglomeration Methods 0.000 claims 1
- 230000002776 aggregation Effects 0.000 claims 1
- 230000002285 radioactive effect Effects 0.000 claims 1
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000727 fraction Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/28—Treating solids
- G21F9/34—Disposal of solid waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
- B09B1/008—Subterranean disposal, e.g. in boreholes or subsurface fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A B S T R A C T
"Method of Handling Finely Particulate Waste Materials For Disposal"
In the disposal or temporary storage of finely particulate waste material in a natural or artificial chamber either above or below ground, the material is pumped through a pipe into the chamber in a solids/liquid mixture comprising the fine waste material, a liquid, and a coarse fraction which is obtained from the fine material itself, such as by separating and agglomerating, preferably pelletizing, some of the fine material.
"Method of Handling Finely Particulate Waste Materials For Disposal"
In the disposal or temporary storage of finely particulate waste material in a natural or artificial chamber either above or below ground, the material is pumped through a pipe into the chamber in a solids/liquid mixture comprising the fine waste material, a liquid, and a coarse fraction which is obtained from the fine material itself, such as by separating and agglomerating, preferably pelletizing, some of the fine material.
Description
~L2313~35~
"Method of Handling Finely Particula-te Waste Ma-terials For Dis~osal"
_.
Thls inven-tion relates -to -the disposal or temporary s-torage of finely particula-te waste materials by a method i.n which a sol:ids/liquid mixture comprising the finely particulate waste 5. material, a liquid of which at least a portion may also be a waste material, and an added quantity of a coarse material is conveyed by means of a displacement purnp through a pipeline to a dump or s-torage chamber, which may be of natural lOo or ar-tificial constructlon and either above or below ground.
Such a me-thod is known from European Specifi cation No~ 00 26 301, in which method a solids/llquid mixture containing less -than 20% by weigh-t of 15. liqui(~., p~eferably water, is delivered by means of a piston pump to -the s-torage cavity or space.
In thls way extremely finely grained, for example dusty or even pasty and sludge-like was-te materials, may be d~nped withou-t problems arising in respect 20. of the conveying liqui.d or, in -the case of an underground. cavern, withou-t inadequately s-tahle (in respec-t of rock mechanics) back-fil.ling taking place in the cavern. The me~thod assumes that a certain fraction of coarse material will be mixed 25, wi-th -the fine, tha-t is -the ex-tremely fi.ne and finely particulate was-te material which is predominan-tly to be disposed of, wi-th -the effect of providing a conveying mix-ture of fine and coarse 373~
parti.culate rnaterial having a rela-tivel.y low wa-ter content for pumped back-fillingO The basic rela--tionship is that the minimum quan~tity of conveying liquid re~uired for purnped conveying becomes 5~ smaller7 the higher -the propor-tion of coarse material in -the mixture.
The degree o:E purnpabili-ty of the mix-ture depends, on the o-ther hand, upon -the presence of medium and/or fi.ne gralns in a volumetric proportion 10. which exceeds tha-t of the theoretical pore volume of the coarse material in bulk. ~ continuous sliding oX the mix-ture in -the purnping line occurs only if brid.ges, i~e. blockages of -the pipe cross-section, canno~t :Eorm from coarser grains.
15. For -this purpose, a specific propor-tion of -the finer :Eraction is necessary, which keeps the coarser grains in the mixture separated. from one another.
Such a particle size spec-trurn and the consis-tency o:f.` the mix-ture largely preven-t relative movements 20~ o.-L`-the individual grains, so tha~t these are fixed in t;heir rela-tive position cduring pumping and there is no risk of segrega-tion. A specific role in respec-t of purnpabili-ty and wear of -the purnping equipment is played by the very fine fraction, which 25. also hac; the aclcdi-tional task of creating a lubrica-ting fi]m between the highly co:nsistent conveyecl ma-teriaL and -the wal:L of the pipe line. This lubricating film occurs during ~the course of a pressure segregation resul-ting frorn -the wa-ter 30~ con-ten-t in the mi.x-ture.
~Z~3~3~
In the case of was-tc d.ispo~al, it may be regarded as a disadvan~tage of the above method tha-t a coa.rse grained, gravel-like mater;.al must always be present7 i-t being necessary to add the 5. coarse material if -the actual waste material to be disposed of is all i~ finely particula-te form, The aim of the present i.nventi.on therefore is to obvia-te -this disadvantage and make -the method more practical and. economic, especially in -those lO. cases in which a coarse-grained materia1. is not produced or is no-t present na-turally in the waste ' material.
j To this end, according to the invention~ a : method oE disposing of or -temporari1.y storing a 1.5~ finely part.iculate waste material, in which a : solids/liquid mixture comprising the finely parti.culate waste material, a ]iquid, and a coarse material is delivered by a disp].acernen-t pllmp -through a pipeline to a dump or storage chamber, 20~ is characterised in tha-t the coarse rna-ter:i.al fraction of the solids/liquld mix-ture i.s obtai.ned from -the fine]y particulate material itself.
Pre:Eerably the coarse frac-tion is obtained by separa-ting and agg1.omera~ting? preferabl.y pelletiz-25~ i.ng? some oE the fine material ln order -to increase i.-ts grain size.
A particularly economical me-thod of opera-tion is thus ob-tained, because expensive dlsposal or s-torage space is no longer wasted and is occupied ~0. only by the was-te material itself.
- 4- ~213739 The method is particularly advantageous for the disposal of extremely finely parti.culate I radioactive waste ma-terial. As also in the disposal of other environmentally harmful waste 5. ma-terials, it is of importance that ln ad.dition to -the low quantity of conveying liquid it is possible to use a delivery~pipe]ine inside a closed system between the feed point and the disposal point, -thus excluding the possibility of any 10. kind of emission. Since -the coarse material fraction is obtained from the fine was-te material ; itself, dangerous waste materials can be disposed of or s-tored in an extremely concentrated form, and therefore in relatively srnall quanti-ties.
15.
20.
,j ~, 25.
30.
"Method of Handling Finely Particula-te Waste Ma-terials For Dis~osal"
_.
Thls inven-tion relates -to -the disposal or temporary s-torage of finely particula-te waste materials by a method i.n which a sol:ids/liquid mixture comprising the finely particulate waste 5. material, a liquid of which at least a portion may also be a waste material, and an added quantity of a coarse material is conveyed by means of a displacement purnp through a pipeline to a dump or s-torage chamber, which may be of natural lOo or ar-tificial constructlon and either above or below ground.
Such a me-thod is known from European Specifi cation No~ 00 26 301, in which method a solids/llquid mixture containing less -than 20% by weigh-t of 15. liqui(~., p~eferably water, is delivered by means of a piston pump to -the s-torage cavity or space.
In thls way extremely finely grained, for example dusty or even pasty and sludge-like was-te materials, may be d~nped withou-t problems arising in respect 20. of the conveying liqui.d or, in -the case of an underground. cavern, withou-t inadequately s-tahle (in respec-t of rock mechanics) back-fil.ling taking place in the cavern. The me~thod assumes that a certain fraction of coarse material will be mixed 25, wi-th -the fine, tha-t is -the ex-tremely fi.ne and finely particulate was-te material which is predominan-tly to be disposed of, wi-th -the effect of providing a conveying mix-ture of fine and coarse 373~
parti.culate rnaterial having a rela-tivel.y low wa-ter content for pumped back-fillingO The basic rela--tionship is that the minimum quan~tity of conveying liquid re~uired for purnped conveying becomes 5~ smaller7 the higher -the propor-tion of coarse material in -the mixture.
The degree o:E purnpabili-ty of the mix-ture depends, on the o-ther hand, upon -the presence of medium and/or fi.ne gralns in a volumetric proportion 10. which exceeds tha-t of the theoretical pore volume of the coarse material in bulk. ~ continuous sliding oX the mix-ture in -the purnping line occurs only if brid.ges, i~e. blockages of -the pipe cross-section, canno~t :Eorm from coarser grains.
15. For -this purpose, a specific propor-tion of -the finer :Eraction is necessary, which keeps the coarser grains in the mixture separated. from one another.
Such a particle size spec-trurn and the consis-tency o:f.` the mix-ture largely preven-t relative movements 20~ o.-L`-the individual grains, so tha~t these are fixed in t;heir rela-tive position cduring pumping and there is no risk of segrega-tion. A specific role in respec-t of purnpabili-ty and wear of -the purnping equipment is played by the very fine fraction, which 25. also hac; the aclcdi-tional task of creating a lubrica-ting fi]m between the highly co:nsistent conveyecl ma-teriaL and -the wal:L of the pipe line. This lubricating film occurs during ~the course of a pressure segregation resul-ting frorn -the wa-ter 30~ con-ten-t in the mi.x-ture.
~Z~3~3~
In the case of was-tc d.ispo~al, it may be regarded as a disadvan~tage of the above method tha-t a coa.rse grained, gravel-like mater;.al must always be present7 i-t being necessary to add the 5. coarse material if -the actual waste material to be disposed of is all i~ finely particula-te form, The aim of the present i.nventi.on therefore is to obvia-te -this disadvantage and make -the method more practical and. economic, especially in -those lO. cases in which a coarse-grained materia1. is not produced or is no-t present na-turally in the waste ' material.
j To this end, according to the invention~ a : method oE disposing of or -temporari1.y storing a 1.5~ finely part.iculate waste material, in which a : solids/liquid mixture comprising the finely parti.culate waste material, a ]iquid, and a coarse material is delivered by a disp].acernen-t pllmp -through a pipeline to a dump or storage chamber, 20~ is characterised in tha-t the coarse rna-ter:i.al fraction of the solids/liquld mix-ture i.s obtai.ned from -the fine]y particulate material itself.
Pre:Eerably the coarse frac-tion is obtained by separa-ting and agg1.omera~ting? preferabl.y pelletiz-25~ i.ng? some oE the fine material ln order -to increase i.-ts grain size.
A particularly economical me-thod of opera-tion is thus ob-tained, because expensive dlsposal or s-torage space is no longer wasted and is occupied ~0. only by the was-te material itself.
- 4- ~213739 The method is particularly advantageous for the disposal of extremely finely parti.culate I radioactive waste ma-terial. As also in the disposal of other environmentally harmful waste 5. ma-terials, it is of importance that ln ad.dition to -the low quantity of conveying liquid it is possible to use a delivery~pipe]ine inside a closed system between the feed point and the disposal point, -thus excluding the possibility of any 10. kind of emission. Since -the coarse material fraction is obtained from the fine was-te material ; itself, dangerous waste materials can be disposed of or s-tored in an extremely concentrated form, and therefore in relatively srnall quanti-ties.
15.
20.
,j ~, 25.
30.
Claims (4)
1. A method of disposing of or temporarily storing a finely particulate waste material, in which a solids/liquid mixture comprising the finely particulate waste material, a liquid, and a coarse material is delivered by a displacement pump through a pipeline to a dump or storage chamber, characterised in that the coarse material fraction of the solids/liquid mixture is obtained from the finely particulate material itself.
2. A method according to claim 1, in which the coarse material is obtained by separating and agglomerating some of the fine material,
3. A method according to claim 1, in which the agglomeration of the fine material comprises pelletization.
4. A method according to any one of claims 1 to 3, in which the finely particulate waste material is radioactive.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP83103261.0 | 1983-04-02 | ||
| EP83103261A EP0121577A1 (en) | 1983-04-02 | 1983-04-02 | Method of dumping or disposing waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1213739A true CA1213739A (en) | 1986-11-12 |
Family
ID=8190390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000450651A Expired CA1213739A (en) | 1983-04-02 | 1984-03-28 | Method of handling finely particulate waste materials for disposal |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0121577A1 (en) |
| JP (1) | JPS59183879A (en) |
| AU (1) | AU577037B2 (en) |
| CA (1) | CA1213739A (en) |
| ZA (1) | ZA84793B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989007493A1 (en) * | 1988-02-16 | 1989-08-24 | "Natura" Környezetvédelmi Tervezo^", Fejleszto^" É | Refuse dump for temporary or permanent disposal of hazardous waste and process for installing refuse dumps |
| AT393975B (en) * | 1989-04-03 | 1992-01-10 | Steyrermuehl Papier | METHOD FOR THE DISPOSAL OF WASTE |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB926821A (en) * | 1958-09-24 | 1963-05-22 | Continental Oil Co | Underground disposal of radioactive liquids or slurries |
| GB1443930A (en) * | 1972-08-01 | 1976-07-28 | Shell Int Research | Transportation and storage of solid particulate material |
| AU491601B2 (en) * | 1975-04-11 | 1976-10-14 | Shell Internationale Research Maatschappij B.V. | The transportation of coal by pipeline |
| DE2939051C2 (en) * | 1979-09-27 | 1983-03-03 | Preussag Ag Metall, 3380 Goslar | Method of moving excavation cavities |
-
1983
- 1983-04-02 EP EP83103261A patent/EP0121577A1/en not_active Ceased
-
1984
- 1984-02-01 AU AU23958/84A patent/AU577037B2/en not_active Expired
- 1984-02-02 ZA ZA84793A patent/ZA84793B/en unknown
- 1984-03-28 CA CA000450651A patent/CA1213739A/en not_active Expired
- 1984-04-02 JP JP59065648A patent/JPS59183879A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| AU2395884A (en) | 1984-10-04 |
| JPS6313753B2 (en) | 1988-03-28 |
| ZA84793B (en) | 1985-03-27 |
| EP0121577A1 (en) | 1984-10-17 |
| JPS59183879A (en) | 1984-10-19 |
| AU577037B2 (en) | 1988-09-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |