CN113912380A - Comprehensive domestic sludge making and transferring process - Google Patents
Comprehensive domestic sludge making and transferring process Download PDFInfo
- Publication number
- CN113912380A CN113912380A CN202111076437.XA CN202111076437A CN113912380A CN 113912380 A CN113912380 A CN 113912380A CN 202111076437 A CN202111076437 A CN 202111076437A CN 113912380 A CN113912380 A CN 113912380A
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- raw materials
- sludge
- domestic sludge
- fly ash
- mixing
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- 239000010802 sludge Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 59
- 238000003756 stirring Methods 0.000 claims abstract description 42
- 239000011449 brick Substances 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 25
- 230000032683 aging Effects 0.000 claims abstract description 17
- 238000001125 extrusion Methods 0.000 claims abstract description 16
- 239000010881 fly ash Substances 0.000 claims description 25
- 239000002893 slag Substances 0.000 claims description 25
- 239000000919 ceramic Substances 0.000 claims description 21
- 239000002699 waste material Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 11
- 238000012216 screening Methods 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000003086 colorant Substances 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
Images
Classifications
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a comprehensive domestic sludge making and transferring process, which comprises the steps of dividing raw materials into two parts, respectively crushing and fully mixing the two parts in advance, then mixing and crushing the two parts by a crusher, carrying out procedures such as strong stirring, double-shaft stirring, aging and the like in sequence, and extruding bricks by double-shaft stirring and vacuum extrusion, so that the prepared bricks have excellent performance, excellent weather resistance, hardness, wear resistance, heat resistance, frost resistance and corrosion resistance, high appearance quality and few cracks, and the colors of all surfaces are consistent.
Description
Technical Field
The invention relates to the technical field of ceramics, in particular to a comprehensive domestic sludge preparation and conversion process.
Background
Bricks, a basic unit of construction of buildings, usually of rectangular parallelepiped conformation; with the continuous development of society, the technology in each field is also continuously developed, the building standard is improved, and the existing brick has poor performances, such as hardness, frost resistance and weathering resistance, due to the influence of the manufacturing raw materials and the manufacturing process, and cannot meet the building standard.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a comprehensive domestic sludge preparation and conversion process with excellent performance of the prepared bricks.
In order to achieve the purpose, the scheme provided by the invention is as follows: a comprehensive domestic sludge preparation and conversion process comprises the following steps:
s1, weighing a set amount of domestic sludge, sludge and pressed sludge, then adopting a hammer crusher to hammer, and mixing through a high-speed pair roller;
s2, weighing a set amount of ceramic waste, shale mud, furnace slag and fly ash, sequentially crushing and mixing the ceramic waste and the shale mud through a plate crusher and a jaw crusher, adding the furnace slag and the fly ash into a mixed raw material, crushing and mixing the slag and the fly ash through a hammer crusher, screening through a cylindrical screen, outputting the raw material which meets the thickness specification, pouring the raw material which does not meet the thickness specification into the hammer crusher again for crushing, and finally screening through the cylindrical screen;
s3, pouring the mixed raw materials obtained in the step S1 and the step S2 into a strong stirrer in sequence for strong stirring, crushing and mixing the mixed raw materials with a high-speed pair roller in sequence through a hammer crusher, and placing the mixture into an aging warehouse for 54-66 hours after strong stirring;
s4, taking out the raw materials in the aging warehouse, sequentially carrying out double-shaft stirring and strong stirring, then carrying out double-shaft stirring extrusion, and then carrying out vacuum extrusion.
The invention has the beneficial effects that: the prepared brick has excellent performance, and the brick making process divides the raw materials into two parts, respectively crushes and fully mixes the two parts in advance, then mixes and crushes the two parts by a crusher, sequentially carries out the working procedures of strong stirring, double-shaft stirring, aging and the like, and then carries out double-shaft stirring extrusion and vacuum extrusion on the brick, so that the prepared brick has excellent performance, excellent weather resistance, hardness, wear resistance, heat resistance, frost resistance and corrosion resistance, high appearance quality of the brick, few cracks and consistent color of each surface.
Further, the raw materials are conveyed through the box type feeder.
Further, the raw materials are put into an aging warehouse and taken out after 60 hours.
Further, in step S4, a predetermined amount of water is added during the biaxial stirring.
Further, the brick making raw materials comprise the following components in percentage by mass: 28-32% of domestic sludge, 6-10% of sludge, 1-3% of pressed mud, 3-6% of ceramic waste, 29-32% of shale mud, 16-20% of slag and 5-9% of fly ash.
Further, the brick making raw materials comprise the following components in percentage by mass: 30% of domestic sludge, 8% of sludge, 2% of pressed mud, 5% of ceramic waste, 30% of shale mud, 18% of furnace slag and 7% of fly ash.
Drawings
FIG. 1 is a schematic view of a brick making process flow of the present invention.
Detailed Description
The invention will be further illustrated with reference to specific examples:
the first embodiment is as follows:
referring to the attached figure 1, the comprehensive domestic sludge preparation and conversion process comprises the following steps:
s1, weighing a set amount of domestic sludge, sludge and pressed sludge, then adopting a hammer crusher to hammer, and mixing through a high-speed pair roller.
S2, weighing ceramic waste, shale mud, furnace slag and fly ash according to set amount, sequentially crushing and mixing the ceramic waste and the shale mud through a plate crusher and a jaw crusher, adding the furnace slag and the fly ash into a mixed raw material, crushing and mixing the slag and the fly ash through a hammer crusher, screening through a cylindrical screen, outputting the raw material which meets the thickness specification, pouring the raw material which does not meet the thickness specification into the hammer crusher again for crushing, and finally screening through the cylindrical screen.
S3, pouring the mixed raw materials obtained in the step S1 and the step S2 into a strong stirrer in sequence for strong stirring, crushing and mixing the mixed raw materials with high-speed double rollers in sequence through a hammer crusher, then performing strong stirring, and putting the mixture into an aging warehouse for 54 hours.
S4, taking out the raw materials in the aging warehouse, sequentially carrying out double-shaft stirring and strong stirring, then carrying out double-shaft stirring extrusion, and then carrying out vacuum extrusion; wherein, a set amount of water is required to be added during the double-shaft stirring.
Preferably, the raw materials are all conveyed through a box feeder.
The brick making method comprises the following steps of: 28% of domestic sludge, 10% of sludge, 1% of pressed sludge, 3% of ceramic waste, 29% of shale mud, 20% of furnace slag and 9% of fly ash.
In the embodiment, domestic sludge, sludge and pressed mud are crushed and mixed with one another to form a first mixture, then ceramic waste and shale mud are crushed and mixed for the second time, then furnace slag and fly ash are added, the mixture is sieved by a cylindrical sieve after being hammered, and raw materials meeting specification requirements are selected as second raw materials; and mixing the first raw material and the second raw material, and finally carrying out strong stirring, double-shaft stirring, aging and vacuum extrusion to manufacture the brick, so that the brick has excellent weather resistance, hardness, wear resistance, heat resistance, frost resistance and corrosion resistance, the appearance quality of the brick is high, the number of cracks is small, and the colors of all surfaces are consistent.
Example two:
referring to the attached figure 1, the comprehensive domestic sludge preparation and conversion process comprises the following steps:
s1, weighing a set amount of domestic sludge, sludge and pressed sludge, then adopting a hammer crusher to hammer, and mixing through a high-speed pair roller.
S2, weighing ceramic waste, shale mud, furnace slag and fly ash according to set amount, sequentially crushing and mixing the ceramic waste and the shale mud through a plate crusher and a jaw crusher, adding the furnace slag and the fly ash into a mixed raw material, crushing and mixing the slag and the fly ash through a hammer crusher, screening through a cylindrical screen, outputting the raw material which meets the thickness specification, pouring the raw material which does not meet the thickness specification into the hammer crusher again for crushing, and finally screening through the cylindrical screen.
S3, pouring the mixed raw materials obtained in the step S1 and the step S2 into a strong stirrer in sequence for strong stirring, crushing and mixing the mixed raw materials with high-speed double rollers in sequence through a hammer crusher, performing strong stirring, and putting the mixture into an aging warehouse for 66 hours.
S4, taking out the raw materials in the aging warehouse, sequentially carrying out double-shaft stirring and strong stirring, then carrying out double-shaft stirring extrusion, and then carrying out vacuum extrusion; wherein, a set amount of water is required to be added during the double-shaft stirring.
Preferably, the raw materials are all conveyed through a box feeder.
The brick making raw materials comprise the following components in percentage by mass: 32% of domestic sludge, 6% of sludge, 3% of pressed mud, 6% of ceramic waste, 32% of shale mud, 16% of furnace slag and 5% of fly ash.
In the embodiment, domestic sludge, sludge and pressed mud are crushed and mixed with one another to form a first mixture, then ceramic waste and shale mud are crushed and mixed for the second time, then furnace slag and fly ash are added, the mixture is sieved by a cylindrical sieve after being hammered, and raw materials meeting specification requirements are selected as second raw materials; and mixing the first raw material and the second raw material, and finally carrying out strong stirring, double-shaft stirring, aging and vacuum extrusion to manufacture the brick, so that the brick has excellent weather resistance, hardness, wear resistance, heat resistance, frost resistance and corrosion resistance, the appearance quality of the brick is high, the number of cracks is small, and the colors of all surfaces are consistent.
Example three:
the embodiment is a best embodiment, and referring to the attached drawing 1, the comprehensive domestic sludge preparation and conversion process comprises the following steps:
s1, weighing a set amount of domestic sludge, sludge and pressed sludge, then adopting a hammer crusher to hammer, and mixing through a high-speed pair roller.
S2, weighing ceramic waste, shale mud, furnace slag and fly ash according to set amount, sequentially crushing and mixing the ceramic waste and the shale mud through a plate crusher and a jaw crusher, adding the furnace slag and the fly ash into a mixed raw material, crushing and mixing the slag and the fly ash through a hammer crusher, screening through a cylindrical screen, outputting the raw material which meets the thickness specification, pouring the raw material which does not meet the thickness specification into the hammer crusher again for crushing, and finally screening through the cylindrical screen.
S3, pouring the mixed raw materials obtained in the step S1 and the step S2 into a strong stirrer in sequence for strong stirring, crushing and mixing the mixed raw materials with high-speed double rollers in sequence through a hammer crusher, then performing strong stirring, and putting the mixture into an aging warehouse for 60 hours.
S4, taking out the raw materials in the aging warehouse, sequentially carrying out double-shaft stirring and strong stirring, then carrying out double-shaft stirring extrusion, and then carrying out vacuum extrusion; wherein, a set amount of water is required to be added during the double-shaft stirring.
Preferably, the raw materials are all conveyed through a box feeder.
The brick making raw materials comprise the following components in percentage by mass: 30% of domestic sludge, 8% of sludge, 2% of pressed mud, 5% of ceramic waste, 30% of shale mud, 18% of furnace slag and 7% of fly ash.
In the embodiment, domestic sludge, sludge and pressed mud are crushed and mixed with one another to form a first mixture, then ceramic waste and shale mud are crushed and mixed for the second time, then furnace slag and fly ash are added, the mixture is sieved by a cylindrical sieve after being hammered, and raw materials meeting specification requirements are selected as second raw materials; and mixing the first raw material and the second raw material, and finally carrying out strong stirring, double-shaft stirring, aging and vacuum extrusion to manufacture the brick, so that the brick has excellent weather resistance, hardness, wear resistance, heat resistance, frost resistance and corrosion resistance, the appearance quality of the brick is high, the number of cracks is small, and the colors of all surfaces are consistent.
| Index of experiment | Strength grade | Length of crack | Resistance to efflorescence | Cracking of lime | Blooming | Tolerance of size |
| Example one | MU20 | Not more than 17mm | Saturation coefficient is less than or equal to 0.86 | Burst area less than 13 | Each brick sample has no | ±1.8 |
| Example two | MU20 | Not more than 17mm | Saturation coefficient is less than or equal to 0.89 | Burst area less than 13 | Each brick sample has no | ±1.9 |
| EXAMPLE III | MU25 | Not greater than 14mm | Saturation coefficient less than or equal to 0.90 | Burst area less than 12 | Each brick sample has no | ±1.8 |
According to the comparison of the experimental indexes, the strength grade and the crack length are the same as those of the first embodiment, the third embodiment is slightly higher, the weather resistance of the second embodiment is similar to that of the third embodiment, the first embodiment is slightly worse, the lime burst condition of the first embodiment, the second embodiment and the third embodiment is similar, the frost formation conditions of the first embodiment, the second embodiment and the third embodiment are consistent, and the third embodiment is the best embodiment and the experimental indexes are the best.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Those skilled in the art can make many changes and modifications to the disclosed embodiments, or modify equivalent embodiments to practice the disclosed embodiments, without departing from the scope of the disclosed embodiments. Therefore, equivalent variations made according to the idea of the present invention should be covered within the protection scope of the present invention without departing from the contents of the technical solution of the present invention.
Claims (6)
1. The comprehensive domestic sludge preparing and transferring process is characterized by comprising the following steps: the method comprises the following steps:
s1, weighing a set amount of domestic sludge, sludge and pressed sludge, then adopting a hammer crusher to hammer, and mixing through a high-speed pair roller;
s2, weighing a set amount of ceramic waste, shale mud, furnace slag and fly ash, sequentially crushing and mixing the ceramic waste and the shale mud through a plate crusher and a jaw crusher, adding the furnace slag and the fly ash into a mixed raw material, crushing and mixing the slag and the fly ash through a hammer crusher, screening through a cylindrical screen, outputting the raw material which meets the thickness specification, pouring the raw material which does not meet the thickness specification into the hammer crusher again for crushing, and finally screening through the cylindrical screen;
s3, pouring the mixed raw materials obtained in the step S1 and the step S2 into a strong stirrer in sequence for strong stirring, crushing and mixing the mixed raw materials with a high-speed pair roller in sequence through a hammer crusher, and placing the mixture into an aging warehouse for 54-66 hours after strong stirring;
s4, taking out the raw materials in the aging warehouse, sequentially carrying out double-shaft stirring and strong stirring, then carrying out double-shaft stirring extrusion, and then carrying out vacuum extrusion.
2. The comprehensive domestic sludge making and converting process according to claim 1, which is characterized in that: the raw materials are conveyed through the box type feeder.
3. The comprehensive domestic sludge making and converting process according to claim 1, which is characterized in that: and putting the raw materials into an aging warehouse for 60 hours and then taking out the raw materials.
4. The comprehensive domestic sludge making and converting process according to claim 1, which is characterized in that: in step S4, a predetermined amount of water is added during the biaxial stirring.
5. The comprehensive domestic sludge making and converting process according to claim 1, which is characterized in that: the brick making raw materials comprise the following components in percentage by mass: 28-32% of domestic sludge, 6-10% of sludge, 1-3% of pressed mud, 3-6% of ceramic waste, 29-32% of shale mud, 16-20% of slag and 5-9% of fly ash.
6. The comprehensive domestic sludge making and converting process according to claim 5, wherein the process comprises the following steps: the brick making raw materials comprise the following components in percentage by mass: 30% of domestic sludge, 8% of sludge, 2% of pressed mud, 5% of ceramic waste, 30% of shale mud, 18% of furnace slag and 7% of fly ash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111076437.XA CN113912380A (en) | 2021-09-14 | 2021-09-14 | Comprehensive domestic sludge making and transferring process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111076437.XA CN113912380A (en) | 2021-09-14 | 2021-09-14 | Comprehensive domestic sludge making and transferring process |
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| Publication Number | Publication Date |
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| CN113912380A true CN113912380A (en) | 2022-01-11 |
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| CN202111076437.XA Pending CN113912380A (en) | 2021-09-14 | 2021-09-14 | Comprehensive domestic sludge making and transferring process |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874153A (en) * | 1985-10-24 | 1989-10-17 | Fujimi Tile Co., Ltd. | Process for producing ceramic products using the sludge obtained by sewage treatment |
| CN102765928A (en) * | 2012-07-05 | 2012-11-07 | 浙江特拉建材有限公司 | Brick manufacturing method |
| CN102838378A (en) * | 2012-08-23 | 2012-12-26 | 陕西宝深机械(集团)有限公司 | Complete harmless and resourceful treatment process of building solid waste |
| CN103951387A (en) * | 2014-04-10 | 2014-07-30 | 沈阳晟和景观陶业有限公司 | Garden landscape sintered brick produced by utilizing ceramic waste materials and waste slag |
| WO2014127600A1 (en) * | 2013-02-25 | 2014-08-28 | 重庆创能再生资源有限公司 | Method for comprehensive regeneration and utilization of urban household garbage and sludge |
| CN104119068A (en) * | 2014-06-20 | 2014-10-29 | 浙江鑫润建材有限公司 | Process for producing non-clay sintered insulating bricks |
| CN104529396A (en) * | 2015-01-16 | 2015-04-22 | 邹汉成 | Method for making bricks by using household sludge |
| CN112142443A (en) * | 2019-06-26 | 2020-12-29 | 嘉兴市双锤建材有限责任公司 | Production process of non-clay sintered insulating brick |
-
2021
- 2021-09-14 CN CN202111076437.XA patent/CN113912380A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874153A (en) * | 1985-10-24 | 1989-10-17 | Fujimi Tile Co., Ltd. | Process for producing ceramic products using the sludge obtained by sewage treatment |
| CN102765928A (en) * | 2012-07-05 | 2012-11-07 | 浙江特拉建材有限公司 | Brick manufacturing method |
| CN102838378A (en) * | 2012-08-23 | 2012-12-26 | 陕西宝深机械(集团)有限公司 | Complete harmless and resourceful treatment process of building solid waste |
| WO2014127600A1 (en) * | 2013-02-25 | 2014-08-28 | 重庆创能再生资源有限公司 | Method for comprehensive regeneration and utilization of urban household garbage and sludge |
| CN103951387A (en) * | 2014-04-10 | 2014-07-30 | 沈阳晟和景观陶业有限公司 | Garden landscape sintered brick produced by utilizing ceramic waste materials and waste slag |
| CN104119068A (en) * | 2014-06-20 | 2014-10-29 | 浙江鑫润建材有限公司 | Process for producing non-clay sintered insulating bricks |
| CN104529396A (en) * | 2015-01-16 | 2015-04-22 | 邹汉成 | Method for making bricks by using household sludge |
| CN112142443A (en) * | 2019-06-26 | 2020-12-29 | 嘉兴市双锤建材有限责任公司 | Production process of non-clay sintered insulating brick |
Non-Patent Citations (1)
| Title |
|---|
| 何鑫等: "《生活垃圾分类处理与资源化利用》", 31 March 2020, 中国环境出版集团 * |
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Application publication date: 20220111 |