CN113173747A - Preparation method of environment-friendly sludge coal gangue concrete - Google Patents
Preparation method of environment-friendly sludge coal gangue concrete Download PDFInfo
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- CN113173747A CN113173747A CN202110511123.1A CN202110511123A CN113173747A CN 113173747 A CN113173747 A CN 113173747A CN 202110511123 A CN202110511123 A CN 202110511123A CN 113173747 A CN113173747 A CN 113173747A
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- foaming agent
- sludge
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- coal gangue
- gangue
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- 239000003245 coal Substances 0.000 title claims abstract description 68
- 239000010802 sludge Substances 0.000 title claims abstract description 46
- 239000004567 concrete Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000004088 foaming agent Substances 0.000 claims abstract description 55
- 238000001035 drying Methods 0.000 claims abstract description 45
- 239000002002 slurry Substances 0.000 claims abstract description 34
- 239000011381 foam concrete Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004568 cement Substances 0.000 claims abstract description 10
- 238000005187 foaming Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 108010082495 Dietary Plant Proteins Proteins 0.000 claims description 5
- 235000021120 animal protein Nutrition 0.000 claims description 5
- 239000008280 blood Substances 0.000 claims description 5
- 210000004369 blood Anatomy 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000000344 soap Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000003208 petroleum Substances 0.000 claims description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000005065 mining Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000032258 transport Effects 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
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- 230000002269 spontaneous effect Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0418—Wet materials, e.g. slurries
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
-
- 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
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- 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
- C04B2111/40—Porous or lightweight materials
-
- 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
Abstract
The invention discloses a preparation method of environment-friendly sludge coal gangue concrete, which relates to the field of concrete and comprises the following steps of fishing out sludge and drying; drying the coal gangue; mixing and crushing the dried sludge and the dried coal gangue according to a proportion, and crushing the mixture into particles; pouring the crushed mixed particles into a stirrer, adding cement and water, and fully stirring to form concrete slurry; and (3) foaming treatment, namely fully foaming the foaming agent, mixing the foaming agent with the concrete slurry, and stirring to form the foamed concrete slurry. Solves the problem of pollution of the coal gangue.
Description
Technical Field
The invention relates to the field of coal gangue concrete, in particular to a preparation method of environment-friendly sludge coal gangue concrete.
Background
The coal gangue is associated and symbiotic with coal in the coal forming process, and is solid waste generated in the coal mining and cleaning processes, the gangue discharge amount of a coal mine accounts for about 10-25% of the total coal mining amount, and the coal gangue becomes industrial solid waste with the largest accumulated amount and occupied area in China. Currently, the total inventory of national coal gangue is about 45 hundred million tons, and still increases year by year. The coal gangue contains combustible substances such as residual coal, carbonaceous mudstone and the like, and after long-term open-air accumulation, spontaneous combustion often occurs, and a large amount of gases such as CO, CO2, SO2 and the like and other organic harmful gases are discharged, SO that the pollution to the atmosphere, soil and water resources is caused, and geological disasters are easily caused. Meanwhile, the coal gangue contains heavy metals with lower concentration, such as: the content of Cd, Cu, Ni, Hg, Pb, Sn and other heavy metals far exceeds the background value of soil, so that certain environmental risk still exists in the accumulation or backfill disposal process. However, the coal gangue has the properties of coal, rock and chemical raw materials, is an available resource, and if the coal gangue can be comprehensively utilized, the environment of a mining area can be improved, resources can be saved, the occupied area can be reduced, and the sustainable development of the mining area is promoted. Therefore, the multi-channel, large-scale resource and safe consumption of the coal gangue is urgent.
Disclosure of Invention
The invention aims to provide a preparation method of environment-friendly sludge coal gangue concrete, which aims to solve the problem that the content of some heavy metals in the background technology is far beyond the background value of soil, so that certain environmental risk still exists in the process of accumulation or backfill treatment.
A preparation method of environment-friendly sludge gangue concrete comprises the following steps,
drying the sludge after fishing out;
drying the coal gangue;
mixing and crushing the dried sludge and the dried coal gangue according to a proportion, and crushing the mixture into particles;
pouring the crushed mixed particles into a stirrer, adding cement and water, and fully stirring to form concrete slurry;
and (3) foaming treatment, namely fully foaming the foaming agent, mixing the foaming agent with the concrete slurry, and stirring to form the foamed concrete slurry.
As an embodiment of the invention, the drying treatment after the sludge is fished out comprises
Taking out the sludge and then airing;
drying in a drying room after airing, and transporting to the outside;
and (5) drying and packaging.
As an embodiment of the invention, the sludge is fished out and then dried, and the method comprises the following steps
Adding water after taking out the sludge;
after water is added, filtering the diluted sludge through a filtering piece, and filtering large granular substances in the sludge;
and drying the filtered sludge.
As an embodiment of the invention, the coal gangue drying treatment comprises
Drying the coal gangue, namely sequentially putting the coal gangue into a drying room for drying;
primarily crushing the coal gangue, coarsely crushing the coal gangue, and adding a proper amount of sand grains after treatment.
As an embodiment of the present invention, the foaming agent is a metal aluminum powder foaming agent, a vegetable protein foaming agent, an animal protein foaming agent, a resin soap foaming agent, a hydrolyzed blood gel foaming agent, or an aluminum petroleum sulfonate foaming agent, or a mixture of two or more of them.
The ratio of the foaming agent to the concrete slurry is 0.1-1: 10.
The ratio of the foaming agent to the concrete slurry is 0.5-1: 10.
The ratio of the foaming agent to the concrete slurry is 1: 10.
A preparation method of environment-friendly silt gangue concrete, namely foamed concrete slurry, is characterized by comprising cement, water, a foaming agent, silt, gangue and clay,
the coal gangue accounts for the foamed concrete slurry in percentage by weight: 35% -39%;
the cement accounts for the weight percentage of the foamed concrete slurry: 35% -30%;
the sludge accounts for the weight percentage of the foamed concrete slurry: 35% -37%;
the foaming agent accounts for the following weight percentage: 10 percent.
A drying room, which comprises
The heater is arranged in the box body;
the switch door is hinged to the outer end of the lower surface of the box body, and one side of the switch door is an inclined surface;
the winding disc is externally connected with a motor and is arranged in the box body;
the driving roller is rotatably arranged in the box body;
the driven roller is rotatably arranged at the upper part in the box body;
one end of the steel cable is fixedly connected with the winding disc, and the other end of the steel cable bypasses the driving roller and the driven roller and is connected with the switch door;
one end of the conveying belt is arranged in the box body, and the other end of the conveying belt extends out of the box body;
the heating member, the heating member is located the box.
As an embodiment of the invention, the lower part of the side surface of the box body is provided with a discharge hole, and the other end of the conveyor belt extends out of the discharge hole.
As an embodiment of the invention, the conveyor belt extends out of the discharge opening part and is connected with the box body through a fixed rod.
As an embodiment of the invention, a driving shaft is connected to the part, located in the box body, of the conveyor belt, so that the conveyor belt is driven to rotate to convey materials.
The invention has the beneficial effects that: the method for processing and recycling the coal gangue is provided, and the existing and future coal gangue recycling method is provided for coal mine enterprises; the gangue foam concrete has self-filling and self-compacting performances, and does not need to be tamped, and after the gangue foam concrete is solidified, a stable, firm and compact filling body can be formed in a roadway, so that the phenomena of sedimentation and loss are avoided, and potential safety hazards are eliminated; the coal gangue foamed concrete has compression resistance, the compression strength is more than 1.2Mpa, and the backfilled roadway has good compression resistance and the safety is improved; in addition, the compressive strength can be changed by adjusting the raw material proportion; (8) the gangue foamed concrete slurry has good pumpability, can be remotely pumped, can be pumped into a roadway to be filled as required, and has strong operation injection capability and high mechanization degree.
Drawings
Fig. 1 is a front view of a drying room according to the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.
It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
A preparation method of environment-friendly sludge gangue concrete comprises the following steps,
drying the sludge after fishing out;
drying the coal gangue;
mixing and crushing the dried sludge and the dried coal gangue according to a proportion, and crushing the mixture into particles;
pouring the crushed mixed particles into a stirrer, adding cement and water, and fully stirring to form concrete slurry;
and (3) foaming treatment, namely fully foaming the foaming agent, mixing the foaming agent with the concrete slurry, and stirring to form the foamed concrete slurry.
The drying treatment after the sludge is fished out comprises the following steps
Taking out the sludge and then airing;
drying in a drying room after airing, and transporting to the outside;
and (5) drying and packaging.
The sludge is fished out and then dried before being treated by
Adding water after taking out the sludge;
after water is added, filtering the diluted sludge through a filtering piece, and filtering large granular substances in the sludge;
and drying the filtered sludge.
The drying treatment of the coal gangue comprises
Drying the coal gangue, namely sequentially putting the coal gangue into a drying room for drying;
the coal gangue is primarily crushed, the coal gangue is coarsely crushed into large particles so as to be convenient for next treatment, and a proper amount of sand grains are added after treatment.
The foaming agent is a metal aluminum powder foaming agent, a vegetable protein foaming agent, an animal protein foaming agent, a resin soap foaming agent, a hydrolyzed blood gel foaming agent or an aluminum petroleum sulfonate foaming agent, or a mixture of more than two of the metal aluminum powder foaming agent, the vegetable protein foaming agent, the animal protein foaming agent, the resin soap foaming agent, the hydrolyzed blood gel foaming agent or the aluminum petroleum sulfonate foaming agent.
The ratio of the foaming agent to the concrete slurry is 0.1-1: 10.
The ratio of the foaming agent to the concrete slurry is 0.5-1: 10.
The ratio of the foaming agent to the concrete slurry is 1: 10.
A foamed concrete slurry comprises cement, water, a foaming agent, sludge, coal gangue and clay,
the coal gangue accounts for the foamed concrete slurry in percentage by weight: 35% -39%;
the cement accounts for the weight percentage of the foamed concrete slurry: 35% -30%;
the sludge accounts for the weight percentage of the foamed concrete slurry: 35% -37%;
the foaming agent accounts for the following weight percentage: 10 percent.
As shown in figure 1, a drying room comprises
A box body 131, wherein a heater is arranged in the box body 131;
the switch door 133, the switch door 133 is hinged to the outer end of the lower surface of the box body 131, and one side of the switch door 133 is an inclined surface;
the winding disc 139 is externally connected with a motor, and the winding disc 139 is arranged in the box body 131;
the driving roller 137 is rotatably arranged in the box body 131;
a driven roller 136 rotatably provided at an upper portion in the case 131;
one end of the steel cable is fixedly connected with the winding disc 139, and the other end of the steel cable is connected with the switch door 133 by bypassing the driving roller 137 and the driven roller;
one end of the conveyor belt 33 is arranged in the box body, and the other end of the conveyor belt extends out of the box body 131;
and the heating member 3, wherein the heating member 3 is arranged in the box body 131.
The lower part of the side surface of the box 131 is provided with a discharge hole 1311, and the other end of the conveyor belt 33 extends out of the discharge hole 1311.
The part of the conveyor belt 33 extending out of the discharge port 1311 is connected with the box 131 through a fixing rod 35.
The part of the conveyor belt 33, which is located in the box 131, is connected with a driving shaft 31 to drive the conveyor belt 33 to rotate so as to convey the materials.
The coal gangue is associated and symbiotic with coal in the coal forming process, and is solid waste generated in the coal mining and cleaning processes, the gangue discharge amount of a coal mine accounts for about 10-25% of the total coal mining amount, and the coal gangue becomes industrial solid waste with the largest accumulated amount and occupied area in China. Currently, the total inventory of national coal gangue is about 45 hundred million tons, and still increases year by year. The coal gangue contains combustible substances such as residual coal, carbonaceous mudstone and the like, and after long-term open-air accumulation, spontaneous combustion often occurs, and a large amount of gases such as CO, CO2, SO2 and the like and other organic harmful gases are discharged, SO that the pollution to the atmosphere, soil and water resources is caused, and geological disasters are easily caused. Meanwhile, the coal gangue contains heavy metals with lower concentration, such as: the content of Cd, Cu, Ni, Hg, Pb, Sn and other heavy metals far exceeds the background value of soil, so that certain environmental risk still exists in the accumulation or backfill disposal process. However, the coal gangue has the properties of coal, rock and chemical raw materials, is an available resource, and if the coal gangue can be comprehensively utilized, the environment of a mining area can be improved, resources can be saved, the occupied area can be reduced, and the sustainable development of the mining area is promoted. Therefore, the multi-channel, large-scale resource and safe consumption of the coal gangue is urgent.
Through this application, place the material and transmit and convey on conveyer belt 33 surface, do not need artifical transport, before drying, put down switch door 133, the transport vechicle enters into box 131 through the inclined plane, heating element 3 heats the material in the box and dries, after the heating, start winding disc 139, tighten up the back with the cable wire, the cable wire tightens up the back, will slowly receive switch door 133 again, the conveyer belt transports the material to discharge gate 1311, the transport vechicle borrows the material at discharge gate 1311, at this moment, remove the transport vechicle, unload the material that loads on the transport vechicle surface and detach.
It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (10)
1. A preparation method of environment-friendly sludge gangue concrete is characterized by comprising the following steps of,
drying the sludge after fishing out;
drying the coal gangue;
mixing and crushing the dried sludge and the dried coal gangue according to a proportion, and crushing the mixture into particles;
pouring the crushed mixed particles into a stirrer, adding cement and water, and fully stirring to form concrete slurry;
and (3) foaming treatment, namely fully foaming the foaming agent, mixing the foaming agent with the concrete slurry, and stirring to form the foamed concrete slurry.
2. The method for preparing environment-friendly sludge gangue concrete according to claim 1, wherein the drying treatment after the sludge is fished out comprises
Taking out the sludge and then airing;
drying in a drying room after airing, and transporting to the outside;
and (5) drying and packaging.
3. The method for preparing environment-friendly sludge gangue concrete according to claim 1, wherein the step of fishing out the sludge and then drying the sludge before the step of drying comprises
Adding water after taking out the sludge;
after water is added, filtering the diluted sludge through a filtering piece, and filtering large granular substances in the sludge;
and drying the filtered sludge.
4. The method for preparing environment-friendly sludge gangue concrete according to claim 3, wherein the drying treatment of the coal gangue comprises
Drying the coal gangue, namely sequentially putting the coal gangue into a drying room for drying;
primarily crushing the coal gangue, coarsely crushing the coal gangue, and adding a proper amount of sand grains after treatment.
5. The method for preparing environment-friendly sludge gangue concrete according to claim 4, wherein the foaming agent is a metal aluminum powder foaming agent, a vegetable protein foaming agent, an animal protein foaming agent, a resin soap foaming agent, a hydrolyzed blood gel foaming agent or an aluminum petroleum sulfonate foaming agent, or a mixture of two or more of the metal aluminum powder foaming agent, the vegetable protein foaming agent, the animal protein foaming agent, the resin soap foaming agent and the hydrolyzed blood gel foaming agent.
The ratio of the foaming agent to the concrete slurry is 0.1-1: 10.
The ratio of the foaming agent to the concrete slurry is 0.5-1: 10.
The ratio of the foaming agent to the concrete slurry is 1: 10.
6. A preparation method of environment-friendly silt gangue concrete is characterized in that a foaming concrete slurry is prepared by cement, water, a foaming agent, silt, gangue and clay,
the coal gangue accounts for the foamed concrete slurry in percentage by weight: 35% -39%;
the cement accounts for the weight percentage of the foamed concrete slurry: 35% -30%;
the sludge accounts for the weight percentage of the foamed concrete slurry: 35% -37%;
the foaming agent accounts for the following weight percentage: 10 percent.
7. A drying room is characterized by comprising
The heater is arranged in the box body;
the switch door is hinged to the outer end of the lower surface of the box body, and one side of the switch door is an inclined surface;
the winding disc is externally connected with a motor and is arranged in the box body;
the driving roller is rotatably arranged in the box body;
the driven roller is rotatably arranged at the upper part in the box body;
one end of the steel cable is fixedly connected with the winding disc, and the other end of the steel cable bypasses the driving roller and the driven roller and is connected with the switch door;
one end of the conveying belt is arranged in the box body, and the other end of the conveying belt extends out of the box body;
the heating member, the heating member is located the box.
8. The drying room according to claim 7, wherein a discharge port is formed at a lower portion of a side surface of the casing, and the other end of the conveyor belt extends out of the discharge port.
9. The drying room of claim 8, wherein the conveyor belt extends out of the discharge opening portion and is connected with the box body through a fixing rod.
10. The drying room according to claim 9, wherein a driving shaft is connected to the inner part of the conveyor belt in the box body to drive the conveyor belt to rotate so as to convey the material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511123.1A CN113173747A (en) | 2021-05-11 | 2021-05-11 | Preparation method of environment-friendly sludge coal gangue concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511123.1A CN113173747A (en) | 2021-05-11 | 2021-05-11 | Preparation method of environment-friendly sludge coal gangue concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113173747A true CN113173747A (en) | 2021-07-27 |
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| CN202110511123.1A Pending CN113173747A (en) | 2021-05-11 | 2021-05-11 | Preparation method of environment-friendly sludge coal gangue concrete |
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| JP2001018000A (en) * | 1999-07-08 | 2001-01-23 | Kankyo Gijutsu Kaihatsu Kk | Treatment of sludge and treating device |
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| JP2001018000A (en) * | 1999-07-08 | 2001-01-23 | Kankyo Gijutsu Kaihatsu Kk | Treatment of sludge and treating device |
| CN102285772A (en) * | 2011-04-27 | 2011-12-21 | 梁林华 | Coal-gangue processing method, coal-gangue foamed concrete and laneway backfilling method |
| CN207135869U (en) * | 2017-08-01 | 2018-03-27 | 重庆辰央农业科技有限公司 | A kind of foster feed for sheep conveyer |
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Application publication date: 20210727 |