CN115152581B - Resource recycling method for environment-friendly household garbage incinerator slag - Google Patents
Resource recycling method for environment-friendly household garbage incinerator slag Download PDFInfo
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- CN115152581B CN115152581B CN202210793370.XA CN202210793370A CN115152581B CN 115152581 B CN115152581 B CN 115152581B CN 202210793370 A CN202210793370 A CN 202210793370A CN 115152581 B CN115152581 B CN 115152581B
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- garbage incinerator
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- 239000002893 slag Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004064 recycling Methods 0.000 title claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 80
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910052742 iron Inorganic materials 0.000 claims abstract description 37
- 239000010802 sludge Substances 0.000 claims abstract description 34
- 238000011049 filling Methods 0.000 claims abstract description 8
- 238000010304 firing Methods 0.000 claims abstract description 8
- 239000002689 soil Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 36
- 241000196324 Embryophyta Species 0.000 claims description 28
- 239000010902 straw Substances 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 16
- 239000003337 fertilizer Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 10
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 10
- 239000002918 waste heat Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 244000068988 Glycine max Species 0.000 claims description 5
- 235000010469 Glycine max Nutrition 0.000 claims description 5
- 240000007594 Oryza sativa Species 0.000 claims description 5
- 235000007164 Oryza sativa Nutrition 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 241000209140 Triticum Species 0.000 claims description 5
- 235000021307 Triticum Nutrition 0.000 claims description 5
- 240000008042 Zea mays Species 0.000 claims description 5
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 5
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 5
- 235000019270 ammonium chloride Nutrition 0.000 claims description 5
- 239000002956 ash Substances 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- 235000012255 calcium oxide Nutrition 0.000 claims description 5
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 5
- 235000005822 corn Nutrition 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000003864 humus Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 5
- 150000002828 nitro derivatives Chemical class 0.000 claims description 5
- 239000010451 perlite Substances 0.000 claims description 5
- 235000019362 perlite Nutrition 0.000 claims description 5
- 235000010333 potassium nitrate Nutrition 0.000 claims description 5
- 239000004323 potassium nitrate Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 235000009566 rice Nutrition 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 5
- 235000010344 sodium nitrate Nutrition 0.000 claims description 5
- 239000004317 sodium nitrate Substances 0.000 claims description 5
- 239000010455 vermiculite Substances 0.000 claims description 5
- 235000019354 vermiculite Nutrition 0.000 claims description 5
- 229910052902 vermiculite Inorganic materials 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 238000009736 wetting Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 244000082204 Phyllostachys viridis Species 0.000 claims 1
- 238000005496 tempering Methods 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 11
- 239000011148 porous material Substances 0.000 abstract description 3
- 230000004083 survival effect Effects 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 238000004080 punching Methods 0.000 abstract 1
- 241001330002 Bambuseae Species 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
- A01G24/12—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
- A01G24/12—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
- A01G24/15—Calcined rock, e.g. perlite, vermiculite or clay aggregates
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant 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
- C04B33/1328—Waste materials; Refuse; Residues without additional clay
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0003—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof containing continuous channels, e.g. of the "dead-end" type or obtained by pushing bars in the green ceramic product
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/612—Machining
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Dispersion Chemistry (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a resource recycling method of environment-friendly household garbage incinerator slag, and relates to the technical field of garbage incinerator slag recycling. The resource recycling method of the environment-friendly household garbage incinerator slag comprises the following steps: step one, crushing raw materials; step two, preparing raw material balls; step three, punching holes on the iron sticks; step four, firing; step five, filling; and step six, batching. The porous balls with rich pore structures are manufactured by utilizing sludge and slag, planting soil for urban greening flowers is obtained after filling and proportioning, acid and alkali are suitable, rooting survival after transplanting of the greening flowers can be facilitated, and the porous balls have rich air permeability and can be suitable for the excessive areas in the south.
Description
Technical Field
The invention relates to the technical field of recycling of garbage incinerator slag, in particular to a recycling method of environment-friendly household garbage incinerator slag.
Background
The waste incineration is a process of reducing the volume of the waste through oxidation at high temperature by proper reactions such as thermal decomposition, combustion, melting and the like, so that residues or molten solid substances are generated after the waste incineration, and a common treatment method of the residues is brickmaking, but the brickmaking is wasted in a large amount due to the fact that the common treatment method has a rich pore structure, so that a recycling method is needed.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides an environment-friendly recycling method for the household garbage incinerator slag, which solves the problem of single utilization mode of the garbage incinerator slag in the prior art.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the method for recycling the environmental-friendly household garbage incinerator slag comprises the following steps:
step one: crushing of raw materials
The sludge of a sewage treatment plant and the crushed slag collected in a garbage incinerator are fully mixed and then are subjected to drying treatment by using waste heat;
step two: preparation of raw material balls
Pressing the obtained raw materials into raw material balls by using a press, and naturally drying in the shade until the water content is 16% -18%;
step three: iron stick perforation
Placing the raw material balls manufactured in the steps on a tray with holes, aligning the holes of the tray to be placed on a rack at the stacking height of the diameter height of the raw material balls, then welding the alignment of the iron labels at the holes of one tray downwards through the aligned holes of the tray below, swinging the rack with the tray for 10-25 times after the iron labels are pulled up, and then inserting the iron labels downwards for 3-5 times;
step four: firing
Placing the raw material balls obtained in the step three after passing through the holes into a roasting furnace, firing by using heat in a garbage incinerator, continuing the process for 8-12 h, and then cooling to room temperature along with the furnace to obtain porous balls;
step five: filling
Soaking plant fibers with the length of 1-3 mm in rooting water for 3-5 days, placing the plant fibers into a container for accommodating the porous balls, and fully shaking the container, so that the plant fibers can enter the holes of the porous balls, and further obtaining the inner fiber porous balls;
step six: proportioning materials
The finished product is obtained by proportioning the following components in parts by weight: 5 to 10 parts of internal fiber porous balls, 15 to 25 parts of humus, 15 to 25 parts of loess, 10 to 15 parts of black soil, 5 to 10 parts of modified compound fertilizer, 2 to 3 parts of perlite and 1 part of vermiculite.
Preferably, the weight ratio of the sludge to the slag is 3:1 to 2.5, the waste heat used for drying the sludge and the slag is the heat before the waste incinerator is discharged through a chimney, and the humidity of the sludge and the slag after treatment is reduced to 25 to 28 percent.
Preferably, 1-2 layers of fine slag are scattered on the surface of the raw material balls in the second step when the raw material balls are dried in the shade, the working pressure of the press is 65-72 MPa, and the diameter of the raw material balls is 5-6 mm.
Preferably, the fine slag is 2500 mesh slag obtained by crushing, grinding and filtering the slag.
Preferably, the diameter of the hole on the tray and the diameter of the iron tag are both 0.3-0.8 mm, and the lower end of the iron tag is a tip.
Preferably, the humidity of the raw material balls after passing through the holes is reduced to 12-15% before the step four.
Preferably, the temperature in the roasting furnace is 750-900 ℃.
Preferably, the plant fiber is a mixture of plant fibers corresponding to bamboo, wheat straw, corn straw, soybean straw and rice straw.
Preferably, the modified compound fertilizer is calcium superphosphate, ammonium chloride, sodium nitrate, plant ash, potassium nitrate, quicklime and nitro compound fertilizer in any proportion, so that the acidity and alkalinity of the finished product after the wetting detection in the step six is 6.5-7.5.
(III) beneficial effects
The invention provides a resource recycling method of environment-friendly household garbage incinerator slag. The beneficial effects are as follows:
according to the invention, the porous balls with rich pore structures are prepared by utilizing the sludge and the slag, so that the planting soil for urban greening flowers is obtained after filling and proportioning, and the planting soil is suitable for acid-base property, can facilitate rooting and survival of the transplanted greening flowers, has rich air permeability, and can be suitable for the excessive areas in the south.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
the embodiment of the invention provides a recycling method of environment-friendly household garbage incinerator slag, which comprises the following steps:
step one: crushing of raw materials
The method comprises the steps of carrying out drying treatment on the sludge of a sewage treatment plant and crushed slag collected in a garbage incinerator by using waste heat after full mixing, wherein the weight ratio of the sludge to the slag is 3: the waste heat used for drying the sludge and the slag is the heat before the waste incinerator is discharged through a chimney, the humidity of the sludge and the slag after treatment is reduced to 28%, and the problems of insufficient viscosity and poor sludge air permeability can be solved by combining the sludge and the slag, wherein the humidity of the sludge before use is 75-80%;
step two: preparation of raw material balls
Pressing the raw materials into raw material balls by using a press, naturally drying the raw material balls in the shade until the moisture is 18%, scattering 1 layer of fine slag on the surface of the raw material balls when the raw material balls are dried in the shade, wherein the working pressure of the press is 72MPa, the diameter of the raw material balls is 6mm, the fine slag is 2500 meshes of slag obtained by crushing, grinding and filtering the slag, and the scattering of the fine slag is used for preventing the raw material balls from being mutually stuck, being stuck to a tray and being stuck to an iron stick when the iron stick is perforated;
step three: iron stick perforation
Placing the raw material balls manufactured by the steps on a tray with holes, then placing the holes of the tray on a rack at a stacking height with the diameter of the raw material balls, then welding the alignment of the iron tags at the holes of one tray downwards through the holes aligned by the tray below, shaking the rack with the tray for 10 times after the iron tags are pulled up, then inserting the iron tags downwards for 3 times, wherein the diameters of the holes on the tray and the diameters of the iron tags are 0.7-0.8 mm, the lower ends of the iron tags are pointed, the air permeability of the raw material balls can be improved through perforation, and the raw material balls can be provided with irregularly distributed hole structures through the operation;
step four: firing
The raw material balls which are obtained in the step three and pass through the holes are placed in a roasting furnace to be burnt by using heat in the garbage incinerator, the process lasts for 8 hours, then the raw material balls are cooled to room temperature along with the furnace to obtain porous balls, the humidity of the raw material balls is 15% before the raw material balls which are passed through the holes are placed in the roasting furnace, the temperature provided by the garbage incinerator is 850-900 ℃, the utilization of garbage incineration heat can be improved and the porous balls are obtained through the current steps, and in the burning process, the porous structure of the porous balls is richer compared with that of the raw material balls due to evaporation of water content of the raw material balls and change of sludge and slag cohesiveness caused by the decrease of humidity, and the air permeability is stronger;
step five: filling
3d, placing plant fibers with the length of 3mm into a container for accommodating the porous ball by using rooting water, and fully shaking the container, so that the plant fibers can enter holes of the porous ball, and further the inner fiber porous ball is obtained, wherein the plant fibers are a mixture of fibers corresponding to bamboo, wheat straw, corn straw, soybean straw and rice straw, and the plant fibers can enter the hole structure of the porous ball due to the perforation process in the step three and are clamped in the hole structure of the porous ball after shaking;
step six: proportioning materials
The finished product is obtained by proportioning the following components in parts by weight: 5 parts of inner fiber porous balls, 15 parts of humus, 15 parts of loess, 10 parts of black soil, 5 parts of modified compound fertilizer, 2 parts of perlite and 1 part of vermiculite, wherein the modified compound fertilizer is calcium superphosphate, ammonium chloride, sodium nitrate, plant ash, potassium nitrate, quicklime and nitro compound fertilizer, and the acid-base property of the finished product after the wetting detection in the step six is 6.5-7.5.
Embodiment two:
the embodiment of the invention provides a recycling method of environment-friendly household garbage incinerator slag, which comprises the following steps:
step one: crushing of raw materials
The method comprises the steps of carrying out drying treatment on the sludge of a sewage treatment plant and crushed slag collected in a garbage incinerator by using waste heat after full mixing, wherein the weight ratio of the sludge to the slag is 3:2, the waste heat used for drying the sludge and the slag is the heat before the waste incinerator is discharged through a chimney, the humidity of the sludge and the slag after treatment is reduced to 26%, and the problems of insufficient viscosity and poor sludge air permeability can be solved by combining the sludge and the slag, wherein the humidity of the sludge before use is 75-80%;
step two: preparation of raw material balls
Pressing the raw materials into raw material balls by using a press, naturally drying the raw material balls in the shade until the moisture is 17%, scattering 1 layer of fine slag on the surface of the raw material balls when the raw material balls are dried in the shade, wherein the working pressure of the press is 65MPa, the diameter of the raw material balls is 6mm, the fine slag is 2500 meshes of slag obtained by crushing, grinding and filtering the slag, and the scattering of the fine slag is used for preventing the raw material balls from being mutually stuck, being stuck to a tray and being stuck to an iron stick when the iron stick is perforated;
step three: iron stick perforation
Placing the raw material balls manufactured by the steps on a tray with holes, then placing the holes of the tray on a rack at a stacking height with the diameter of the raw material balls, then welding the alignment of the iron tags at the holes of one tray downwards through the holes aligned by the tray below, shaking the rack with the tray for 20 times after the iron tags are pulled up, then inserting the iron tags downwards, and reciprocating for 4 times, wherein the diameter of the holes on the tray and the diameter of the iron tags are 0.5-0.6 mm, the lower ends of the iron tags are pointed ends, the air permeability of the raw material balls can be improved through perforation, and the raw material balls can be provided with irregularly distributed hole structures through the operation;
step four: firing
The raw material balls which are obtained in the step three and pass through the holes are placed in a roasting furnace to be burnt by using heat in the garbage incinerator, the process lasts for 8 hours, then the raw material balls are cooled to room temperature along with the furnace to obtain porous balls, the humidity of the raw material balls which are passed through the holes is 12% before the raw material balls are placed in the roasting furnace, the temperature provided by the garbage incinerator is 800-810 ℃, the utilization of garbage incineration heat can be improved and the porous balls are obtained through the current steps, and in the burning process, the porous structure of the porous balls is richer compared with that of the raw material balls due to evaporation of water content of the raw material balls and change of sludge and slag cohesiveness caused by the decrease of humidity, and the air permeability is stronger;
step five: filling
Placing plant fibers with the length of 2mm soaked in rooting water for 3d into a container for containing the porous balls, and fully shaking the container, so that the plant fibers can enter holes of the porous balls, and further the inner fiber porous balls are obtained, wherein the plant fibers are a mixture of fibers corresponding to bamboo, wheat straw, corn straw, soybean straw and rice straw, and the plant fibers can enter the hole structures of the porous balls due to the perforation process in the step three and are clamped in the hole structures of the porous balls after shaking;
step six: proportioning materials
The finished product is obtained by proportioning the following components in parts by weight: 8 parts of inner fiber porous balls, 20 parts of humus, 20 parts of loess, 12 parts of black soil, 8 parts of modified compound fertilizer, 2.5 parts of perlite and 1 part of vermiculite, wherein the modified compound fertilizer is calcium superphosphate, ammonium chloride, sodium nitrate, plant ash, potassium nitrate, quicklime and nitro compound fertilizer, and the acid-base property of the finished product after the wetting detection in the step six is 6.5-7.5.
Embodiment III:
the embodiment of the invention provides a recycling method of environment-friendly household garbage incinerator slag, which comprises the following steps:
step one: crushing of raw materials
The method comprises the steps of carrying out drying treatment on the sludge of a sewage treatment plant and crushed slag collected in a garbage incinerator by using waste heat after full mixing, wherein the weight ratio of the sludge to the slag is 3:2.5, the waste heat used for drying the sludge and the slag is the heat before the waste incinerator is discharged through a chimney, the humidity of the sludge and the slag after treatment is reduced to 25%, and the problems of insufficient viscosity and poor sludge air permeability can be solved by combining the sludge and the slag, wherein the humidity of the sludge before use is 75-80%;
step two: preparation of raw material balls
Pressing the raw materials into raw material balls by using a press, naturally drying the raw material balls in the shade until the moisture is 16%, scattering 2 layers of fine slag on the surfaces of the raw material balls when the raw material balls are dried in the shade, wherein the working pressure of the press is 72MPa, the diameter of the raw material balls is 5mm, the fine slag is 2500 meshes of slag obtained by crushing, grinding and filtering the slag, and the scattering of the fine slag is used for preventing the raw material balls from being mutually stuck, being stuck to a tray and being stuck to an iron stick when the iron stick is perforated;
step three: iron stick perforation
Placing the raw material balls manufactured by the steps on a tray with holes, then placing the holes of the tray on a rack at a stacking height with the diameter of the raw material balls, then welding the alignment of the iron tags at the holes of one tray downwards through the holes aligned by the tray below, shaking the rack with the tray for 25 times after the iron tags are pulled up, then inserting the iron tags downwards for 5 times, wherein the diameters of the holes on the tray and the iron tags are 0.3-0.4 mm, the lower ends of the iron tags are pointed, the air permeability of the raw material balls can be improved through perforation, and the raw material balls can be provided with irregularly distributed hole structures through the operation;
step four: firing
The raw material balls which are obtained in the step three and pass through the holes are placed in a roasting furnace to be burnt by using heat in the garbage incinerator, the process lasts for 8 hours, then the raw material balls are cooled to room temperature along with the furnace to obtain porous balls, the humidity of the raw material balls is 12% before the raw material balls which are passed through the holes are placed in the roasting furnace, the temperature provided by the garbage incinerator is 750-780 ℃, the utilization of garbage incineration heat can be improved and the porous balls are obtained through the current steps, and in the burning process, the porous structure of the porous balls is richer compared with that of the raw material balls due to evaporation of water content of the raw material balls and change of sludge and slag cohesiveness caused by the decrease of humidity, and the air permeability is stronger;
step five: filling
Placing plant fibers with the length of 1mm soaked in rooting water for 5 days into a container for containing the porous balls, and fully shaking the container, so that the plant fibers can enter holes of the porous balls, and further the inner fiber porous balls are obtained, wherein the plant fibers are a mixture of fibers corresponding to bamboo, wheat straw, corn straw, soybean straw and rice straw, and the plant fibers can enter the hole structures of the porous balls due to the perforation process in the step three and are clamped in the hole structures of the porous balls after shaking;
step six: proportioning materials
The finished product is obtained by proportioning the following components in parts by weight: 10 parts of inner fiber porous balls, 25 parts of humus, 25 parts of loess, 15 parts of black soil, 10 parts of modified compound fertilizer, 3 parts of perlite and 1 part of vermiculite, wherein the modified compound fertilizer is calcium superphosphate, ammonium chloride, sodium nitrate, plant ash, potassium nitrate, quicklime and nitro compound fertilizer, and the acid-base property of the finished product after the wetting detection in the step six is 6.5-7.5.
In the first to third embodiments, the diameter of the corresponding plant fiber is 0.05 to 0.1mm.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The method for recycling the environmental-friendly household garbage incinerator slag is characterized by comprising the following steps of:
step one: crushing of raw materials
The sludge of a sewage treatment plant and the crushed slag collected in a garbage incinerator are fully mixed and then are subjected to drying treatment by using waste heat;
step two: preparation of raw material balls
Pressing the obtained raw materials into raw material balls by using a press, and naturally drying in the shade until the water content is 16% -18%;
step three: iron stick perforation
Placing the raw material balls manufactured by the steps on a tray with holes, placing the holes of the tray on a rack in an aligned manner according to the stacking height of the diameter height of the raw material balls, then welding the alignment of the iron labels at the holes of one tray downwards through the aligned holes of the tray below, swinging the rack with the tray for 10-25 times after the iron labels are pulled up, and then inserting the iron labels downwards, and reciprocating for 3-5 times;
step four: firing
Placing the raw material balls obtained in the step three after passing through the holes into a roasting furnace, firing by using heat in a garbage incinerator, continuing the process for 8-12 h, and then cooling to room temperature along with the furnace to obtain porous balls;
step five: filling
Soaking plant fibers with the length of 1-3 mm in rooting water for 3-5 days, placing the plant fibers into a container for accommodating the porous balls, and fully shaking the container, so that the plant fibers can enter the holes of the porous balls, and further obtaining the inner fiber porous balls;
step six: proportioning materials
The finished product is obtained by proportioning the following components in parts by weight: 5 to 10 parts of internal fiber porous balls, 15 to 25 parts of humus, 15 to 25 parts of loess, 10 to 15 parts of black soil, 5 to 10 parts of modified compound fertilizer, 2 to 3 parts of perlite and 1 part of vermiculite.
2. The method for recycling the environmental-friendly household garbage incinerator slag according to claim 1, which is characterized by comprising the following steps: the weight ratio of the sludge to the slag is 3:1 to 2.5, the waste heat used for drying the sludge and the slag is the heat before the waste incinerator is discharged through a chimney, and the humidity of the sludge and the slag after treatment is reduced to 25 to 28 percent.
3. The method for recycling the environmental-friendly household garbage incinerator slag according to claim 1, which is characterized by comprising the following steps: and step two, 1-2 layers of fine slag are scattered on the surface of the raw material balls during drying in the shade, the working pressure of the press is 65-72 MPa, and the diameter of the raw material balls is 5-6 mm.
4. The method for recycling the environmental-friendly household garbage incinerator slag according to claim 3, which is characterized by comprising the following steps: the fine slag is 2500 mesh slag obtained by crushing, grinding and filtering slag.
5. The method for recycling the environmental-friendly household garbage incinerator slag according to claim 1, which is characterized by comprising the following steps: the diameter of the hole on the tray and the diameter of the iron stick are both 0.3-0.8 mm, and the lower end of the iron stick is a tip.
6. The method for recycling the environmental-friendly household garbage incinerator slag according to claim 1, which is characterized by comprising the following steps: the humidity of the raw material balls passing through the holes is reduced to 12-15% before the step four.
7. The method for recycling the environmental-friendly household garbage incinerator slag according to claim 1, which is characterized by comprising the following steps: the temperature in the roasting furnace is 750-900 ℃.
8. The method for recycling the environmental-friendly household garbage incinerator slag according to claim 1, which is characterized by comprising the following steps: the plant fiber is a mixture of plant fibers corresponding to bamboo, wheat straw, corn straw, soybean straw and rice straw.
9. The method for recycling the environmental-friendly household garbage incinerator slag according to claim 1, which is characterized by comprising the following steps: the tempering compound fertilizer is prepared from calcium superphosphate, ammonium chloride, sodium nitrate, plant ash, potassium nitrate, quicklime and nitro compound fertilizer according to any proportion, so that the acidity and alkalinity of the finished product after the wetting detection in the step six are 6.5-7.5.
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