CN113292303A - Environment-friendly composite material wall brick and manufacturing method thereof - Google Patents
Environment-friendly composite material wall brick and manufacturing method thereof Download PDFInfo
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- CN113292303A CN113292303A CN202110653041.0A CN202110653041A CN113292303A CN 113292303 A CN113292303 A CN 113292303A CN 202110653041 A CN202110653041 A CN 202110653041A CN 113292303 A CN113292303 A CN 113292303A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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- 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
- C02F11/004—Sludge detoxification
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
-
- 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
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of building materials, in particular to an environment-friendly composite wall brick and a manufacturing method thereof, wherein the environment-friendly composite wall brick comprises the following raw materials: building waste, coal cinder, sludge, desulfurized gypsum powder, cement, an ultrafine glass fiber coagulant, an additive and a proper amount of water. The building raw materials of the invention have scientific formula, and the building waste and the municipal sludge are prepared according to reasonable proportion as main raw materials to prepare the environment-friendly composite material wall brick, thereby reducing the production cost, realizing the recycling of the building waste, having good economic benefit.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to an environment-friendly composite wall brick and a manufacturing method thereof.
Background
During the construction or demolition and repair of buildings, pipe networks and other facilities, a large amount of construction wastes such as dregs and remnants are generated, wherein most of the construction wastes are not treated or stacked or buried in the open air, which not only increases the construction cost, but also causes serious environmental pollution and limits the sustainable development of urban economy and environment. Along with the increasing discharge of urban sewage, the amount of sludge generated by sewage treatment is increased year by year, and the sludge treatment faces a plurality of problems. At present, buildings and sludge cannot be utilized, so that resource waste is caused, and the sustainable development is not facilitated.
Disclosure of Invention
The invention aims to provide an environment-friendly composite wall brick and a manufacturing method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an environment-friendly composite material wall brick and a manufacturing method thereof comprise the following raw materials in parts by weight: 80-120 parts of construction waste, 50-70 parts of coal slag, 30-40 parts of sludge, 30-40 parts of desulfurized gypsum powder, 30-40 parts of cement, 10-15 parts of ultrafine glass fiber coagulant, 15-20 parts of additive and a proper amount of water;
the environment-friendly composite material wall brick specifically comprises the following steps:
s11: weighing the raw materials in parts by weight;
s12: pretreating construction waste, mixing with coal slag, stirring, and grinding into powder with particle diameter of 0.05-0.1 mm;
s13: pretreating sludge, uniformly stirring the ground powdery particles, the sludge, the desulfurized gypsum powder, the cement, the ultrafine glass fiber coagulant and the additive, adding water, and uniformly stirring to obtain a wall brick mixture, wherein the water addition amount is 10-20%;
s14: adding the wall brick mixture into a brick making die, pressing by a vibration type press, wherein the vibration frequency is 4-10kr/min, the vibration time is 30-90 s, the molding pressure is 10-100MPa, and demolding after molding and compacting;
s15: and (3) transferring the demolded brick into a constant-temperature constant-humidity brick making chamber, and standing and maintaining for 10-25 days under the environment that the temperature is controlled to be 10-70 ℃ and the internal steam content is more than or equal to 90%, so as to obtain the environment-friendly composite material wall brick.
Preferably, the construction waste is waste concrete slag, waste clay brick slag, waste ceramic tiles or waste leftover materials, and the waste leftover materials are waste leftover materials for producing rock wool boards, waste leftover materials for producing fiber cotton boards or leftover materials for producing calcium silicate ceiling boards.
Preferably, the desulfurized gypsum powder is waste used for desulfurization in power plants.
Preferably, the additive comprises a mixture of a concrete water reducing agent, an early strength agent and a volume stabilizer, and the mixing ratio is 1: 1: 1, selecting lignosulfonate, naphthalene sulfonate or sulfonated melamine resin as a concrete water reducing agent; the early strength agent is selected from chloride or sulfate in inorganic composite; the volume stabilizer is selected from lithium salts in inorganic salts.
Preferably, the construction waste pretreatment specifically comprises: sorting through a multistage construction waste sorting machine, removing plastics, metals and wood in construction waste, reserving construction solid waste, cleaning the construction solid waste with water, removing dust and impurities, and obtaining pure construction waste.
Preferably, the coal cinder is pure coal cinder which is obtained by removing dust and impurities through water washing.
Preferably, the sludge pretreatment specifically comprises the following steps:
s21: adding a sludge dehydrating agent into the sludge to condition the sludge, destroying the stable structure of sludge colloid, and enlarging the gaps among particles, so that the sludge is easy to mix with other raw materials, and the dehydration performance is improved;
s22: the sludge odor in the transportation process and the utilization process is controlled by adding a deodorant and changing the transportation mode;
s23: and adding a stabilizer to inhibit the toxicity of the heavy metal to microorganisms and change the existence form of the heavy metal so as to influence the migration characteristic of the heavy metal and obtain the treated sludge.
Preferably, the sludge dehydrating agent is formed by mixing calcium-containing substance powder and aluminum-containing substance powder, wherein the calcium-containing substance powder is calcium hypochlorite, the aluminum-containing substance powder is aluminum sulfate, and the mass ratio of calcium to aluminum in the total components is 9: 1; adding the sludge dehydrating agent accounting for 5-10% of the dry sludge by mass, reacting for more than 8 hours at the ambient temperature of 30-35 ℃, and standing for 2 hours to remove water produced after the sludge is broken into gel.
Preferably, the deodorant is prepared by mixing 50-65% of coal powder and 35-50% of calcium hypochlorite powder by mass, the deodorant is added according to the proportion of 3-10 per mill of the mass of the sludge, the mixture is stirred and mixed uniformly, and the mixture is kept stand at normal temperature for more than 3 hours.
Preferably, the stabilizer is a chelating organic compound, the dosage of the stabilizer is 2-5g per liter of sludge, and the stabilizer reacts for 15-30min at normal temperature after being uniformly mixed.
Compared with the prior art, the invention has the beneficial effects that: in the environment-friendly composite material wall brick and the manufacturing method thereof, the building raw material formula is scientific, the building waste and the municipal sludge are blended according to a reasonable proportion as main raw materials to prepare the environment-friendly composite material wall brick, thereby reducing the production cost, realizing the recycling of the building waste, having good economic benefit, the building waste also takes the waste leftover materials for producing rock wool boards, fiber cotton boards and calcium silicate ceiling boards as raw materials, not only reducing the production cost of the wall brick, but also changing waste into valuables, solving the problem that the waste leftover materials seriously pollute the environment, combining the characteristics of sound absorption, heat insulation, light weight, compression resistance, fire resistance and the like of rock wool, and the product is convenient to construct, labor-saving and material-saving A harmless treatment technical system, which solves the problems of sludge odor and heavy metal pollution.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the following technical scheme:
example 1
An environment-friendly composite material wall brick comprises the following raw materials in parts by weight: 100 parts of construction waste, 50 parts of coal cinder, 35 parts of sludge, 40 parts of desulfurized gypsum powder, 30 parts of cement, 12 parts of superfine glass fiber coagulant, 18 parts of additive and a proper amount of water;
the environment-friendly composite material wall brick specifically comprises the following steps:
s11: weighing the raw materials in parts by weight;
s12: pretreating construction waste, mixing with coal cinder, stirring, and grinding into powder with particle size of 0.1 mm;
s13: pretreating sludge, uniformly stirring the ground powdery particles, the sludge, the desulfurized gypsum powder, the cement, the ultrafine glass fiber coagulant and the additive, adding water, and uniformly stirring to obtain a wall brick mixture, wherein the water addition amount is 10%;
s14: adding the wall brick mixture into a brick making die, pressing by a vibration type press, wherein the vibration frequency is 8kr/min, the vibration time is 80s, the molding pressure is 50MPa, and demolding after molding and compacting;
s15: and (3) transferring the demolded brick into a constant-temperature constant-humidity brick making chamber, and standing and maintaining for 15 days under the environment that the temperature is controlled to be 65 ℃ and the internal steam content is more than or equal to 90% to obtain the environment-friendly composite material wall brick.
Specifically, the construction waste adopts waste concrete slag, waste clay brick slag, waste ceramic chips or waste leftover materials, the waste leftover materials adopt waste leftover materials for producing rock wool boards, waste leftover materials for producing fiber cotton boards or leftover materials for producing calcium silicate ceilings, and the desulfurized gypsum powder is waste used for desulfurization in a power plant.
Further, the additive comprises a mixture of a concrete water reducing agent, an early strength agent and a volume stabilizer, and the mixing ratio is 1: 1: 1, selecting lignosulfonate, naphthalene sulfonate or sulfonated melamine resin as a concrete water reducing agent; the early strength agent is selected from chloride or sulfate in inorganic composite; the volume stabilizer is selected from lithium salts in inorganic salts, and the concrete water reducing agent is selected from lignosulfonate, including sodium lignosulfonate, calcium lignosulfonate, magnesium lignosulfonate and the like, naphthalene sulfonate or sulfonated melamine resin; the early strength agent is selected from inorganic compound, such as sodium chloride in chloride, potassium chloride, calcium chloride or sodium sulfate, potassium sulfate and calcium sulfate in sulfate; the volume stabilizer is selected from inorganic salts, preferably lithium salts (including lithium chloride, lithium sulfate, and lithium nitrate). The concrete water reducing agent is an additive capable of reducing mixing water consumption, improving wall strength and saving cement consumption under the condition of unchanged concrete slag, clay brick slag and cement consumption, and mainly adopts lignosulfonate, naphthalene sulfonate and sulfonated melamine resin. The early strength agent is an additive for accelerating the development of early strength of wall materials, is used for wall engineering with early strength requirements under the conditions of normal temperature and low temperature, adopts inorganic compounds including chloride and sulfate, and the volume stabilizer is an additive for inhibiting volume expansion nonuniformity and deformation after hardening.
It is worth to be noted that the construction waste pretreatment specifically comprises: sorting through multistage building waste sorter, getting rid of plastics, metal and timber among the building waste, remaining building solid waste, wasing building solid waste water again, getting rid of dust impurity, obtain pure building waste, the cinder refers to through the water washing, gets rid of dust impurity, the pure cinder that obtains.
In this embodiment, the sludge pretreatment specifically includes the following steps:
s21: adding a sludge dehydrating agent into the sludge to condition the sludge, destroying the stable structure of sludge colloid, and enlarging the gaps among particles, so that the sludge is easy to mix with other raw materials, and the dehydration performance is improved;
s22: the sludge odor in the transportation process and the utilization process is controlled by adding a deodorant and changing the transportation mode;
s23: and adding a stabilizer to inhibit the toxicity of the heavy metal to microorganisms and change the existence form of the heavy metal so as to influence the migration characteristic of the heavy metal and obtain the treated sludge.
In addition, the sludge dehydrating agent is formed by mixing calcium-containing substance powder and aluminum-containing substance powder, wherein the calcium-containing substance powder is calcium hypochlorite, the aluminum-containing substance powder is aluminum sulfate, and the mass ratio of calcium to aluminum in the total components is 9: 1; adding the sludge dehydrating agent in a proportion of 8% of the dry sludge by mass, reacting for more than 8 hours at the ambient temperature of 35 ℃, and standing for 2 hours to remove water produced after the sludge gel breaking.
The deodorant is characterized by being prepared by mixing 60% of coal powder and 40% of calcium hypochlorite powder by mass, adding the deodorant according to the proportion of 8 per mill of the mass of the sludge, uniformly stirring and mixing, and standing for more than 3 hours at normal temperature.
Specifically, the stabilizer is a chelating organic compound, the adding amount of the stabilizer is 4g per liter of sludge, and the stabilizer reacts for 20min at normal temperature after being uniformly mixed.
Example 2
An environment-friendly composite material wall brick comprises the following raw materials in parts by weight: 120 parts of construction waste, 70 parts of coal cinder, 40 parts of sludge, 40 parts of desulfurized gypsum powder, 35 parts of cement, 13 parts of ultrafine glass fiber coagulant, 16 parts of additive and a proper amount of water;
the environment-friendly composite material wall brick specifically comprises the following steps:
s11: weighing the raw materials in parts by weight;
s12: pretreating construction waste, mixing with coal cinder, stirring, and grinding into powder with particle size of 0.1 mm;
s13: pretreating sludge, uniformly stirring the ground powdery particles, the sludge, the desulfurized gypsum powder, the cement, the ultrafine glass fiber coagulant and the additive, adding water, and uniformly stirring to obtain a wall brick mixture, wherein the water addition amount is 10%;
s14: adding the wall brick mixture into a brick making die, pressing by a vibration type press, wherein the vibration frequency is 8kr/min, the vibration time is 80s, the molding pressure is 50MPa, and demolding after molding and compacting;
s15: and (3) transferring the demolded brick into a constant-temperature constant-humidity brick making chamber, and standing and maintaining for 15 days under the environment that the temperature is controlled to be 65 ℃ and the internal steam content is more than or equal to 90% to obtain the environment-friendly composite material wall brick.
Specifically, the construction waste adopts waste concrete slag, waste clay brick slag, waste ceramic chips or waste leftover materials, the waste leftover materials adopt waste leftover materials for producing rock wool boards, waste leftover materials for producing fiber cotton boards or leftover materials for producing calcium silicate ceilings, and the desulfurized gypsum powder is waste used for desulfurization in a power plant.
Further, the additive comprises a mixture of a concrete water reducing agent, an early strength agent and a volume stabilizer, and the mixing ratio is 1: 1: 1, selecting lignosulfonate, naphthalene sulfonate or sulfonated melamine resin as a concrete water reducing agent; the early strength agent is selected from chloride or sulfate in inorganic composite; the volume stabilizer is selected from lithium salts in inorganic salts, and the concrete water reducing agent is selected from lignosulfonate, including sodium lignosulfonate, calcium lignosulfonate, magnesium lignosulfonate and the like, naphthalene sulfonate or sulfonated melamine resin; the early strength agent is selected from inorganic compound, such as sodium chloride in chloride, potassium chloride, calcium chloride or sodium sulfate, potassium sulfate and calcium sulfate in sulfate; the volume stabilizer is inorganic salt, preferably lithium salt including lithium chloride, lithium sulfate, and lithium nitrate. The concrete water reducing agent is an additive capable of reducing mixing water consumption, improving wall strength and saving cement consumption under the condition of unchanged concrete slag, clay brick slag and cement consumption, and mainly adopts lignosulfonate, naphthalene sulfonate and sulfonated melamine resin. The early strength agent is an additive for accelerating the development of early strength of wall materials, is used for wall engineering with early strength requirements under the conditions of normal temperature and low temperature, adopts inorganic compounds including chloride and sulfate, and the volume stabilizer is an additive for inhibiting volume expansion nonuniformity and deformation after hardening.
It is worth to be noted that the construction waste pretreatment specifically comprises: sorting through multistage building waste sorter, getting rid of plastics, metal and timber among the building waste, remaining building solid waste, wasing building solid waste water again, getting rid of dust impurity, obtain pure building waste, the cinder refers to through the water washing, gets rid of dust impurity, the pure cinder that obtains.
In this embodiment, the sludge pretreatment specifically includes the following steps:
s21: adding a sludge dehydrating agent into the sludge to condition the sludge, destroying the stable structure of sludge colloid, and enlarging the gaps among particles, so that the sludge is easy to mix with other raw materials, and the dehydration performance is improved;
s22: the sludge odor in the transportation process and the utilization process is controlled by adding a deodorant and changing the transportation mode;
s23: and adding a stabilizer to inhibit the toxicity of the heavy metal to microorganisms and change the existence form of the heavy metal so as to influence the migration characteristic of the heavy metal and obtain the treated sludge.
In addition, the sludge dehydrating agent is formed by mixing calcium-containing substance powder and aluminum-containing substance powder, wherein the calcium-containing substance powder is calcium hypochlorite, the aluminum-containing substance powder is aluminum sulfate, and the mass ratio of calcium to aluminum in the total components is 9: 1; adding the sludge dehydrating agent in a proportion of 8% of the dry sludge by mass, reacting for more than 8 hours at the ambient temperature of 35 ℃, and standing for 2 hours to remove water produced after the sludge gel breaking.
The deodorant is characterized by being prepared by mixing 60% of coal powder and 40% of calcium hypochlorite powder by mass, adding the deodorant according to the proportion of 8 per mill of the mass of the sludge, uniformly stirring and mixing, and standing for more than 3 hours at normal temperature.
Specifically, the stabilizer is a chelating organic compound, the adding amount of the stabilizer is 4g per liter of sludge, and the stabilizer reacts for 20min at normal temperature after being uniformly mixed.
The environmental-friendly composite wall brick prepared by the two embodiments of the invention is compared with a common wall brick, and the following table shows that:
the invention relates to an environment-friendly composite wall brick and a manufacturing method thereof, wherein the building raw material formula is scientific, the building waste and municipal sludge are blended according to a reasonable proportion to be used as main raw materials to prepare the environment-friendly composite wall brick, so that the production cost is reduced, the recycling of the building waste is realized, and the environment-friendly composite wall brick has good economic benefit A harmless treatment technical system, which solves the problems of sludge odor and heavy metal pollution.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An environment-friendly composite material wall brick and a manufacturing method thereof are characterized in that: the composite material comprises the following raw materials in parts by weight: 80-120 parts of construction waste, 50-70 parts of coal slag, 30-40 parts of sludge, 30-40 parts of desulfurized gypsum powder, 30-40 parts of cement, 10-15 parts of ultrafine glass fiber coagulant, 15-20 parts of additive and a proper amount of water;
the environment-friendly composite material wall brick specifically comprises the following steps:
s11: weighing the raw materials in parts by weight;
s12: pretreating construction waste, mixing with coal slag, stirring, and grinding into powder with particle diameter of 0.05-0.1 mm;
s13: pretreating sludge, uniformly stirring the ground powdery particles, the sludge, the desulfurized gypsum powder, the cement, the ultrafine glass fiber coagulant and the additive, adding water, and uniformly stirring to obtain a wall brick mixture, wherein the water addition amount is 10-20%;
s14: adding the wall brick mixture into a brick making die, pressing by a vibration type press, wherein the vibration frequency is 4-10kr/min, the vibration time is 30-90 s, the molding pressure is 10-100MPa, and demolding after molding and compacting;
s15: and (3) transferring the demolded brick into a constant-temperature constant-humidity brick making chamber, and standing and maintaining for 10-25 days under the environment that the temperature is controlled to be 10-70 ℃ and the internal steam content is more than or equal to 90%, so as to obtain the environment-friendly composite material wall brick.
2. The environment-friendly composite wall brick and the manufacturing method thereof according to claim 1, wherein the environment-friendly composite wall brick is characterized in that: the building waste adopts waste concrete slag, waste clay brick slag, waste ceramic chips or waste leftover materials, and the waste leftover materials adopt waste leftover materials for producing rock wool boards, waste leftover materials for producing fiber cotton boards or leftover materials for producing silicon-calcium ceilings.
3. The environment-friendly composite wall brick and the manufacturing method thereof according to claim 1, wherein the environment-friendly composite wall brick is characterized in that: the desulfurized gypsum powder is waste used for desulfurization in a power plant.
4. The environment-friendly composite wall brick and the manufacturing method thereof according to claim 1, wherein the environment-friendly composite wall brick is characterized in that: the additive comprises a mixture of a concrete water reducing agent, an early strength agent and a volume stabilizer, and the mixing ratio is 1: 1: 1, selecting lignosulfonate, naphthalene sulfonate or sulfonated melamine resin as a concrete water reducing agent; the early strength agent is selected from chloride or sulfate in inorganic composite; the volume stabilizer is selected from lithium salts in inorganic salts.
5. The environment-friendly composite wall brick and the manufacturing method thereof according to claim 1, wherein the environment-friendly composite wall brick is characterized in that: the construction waste pretreatment specifically comprises the following steps: sorting through a multistage construction waste sorting machine, removing plastics, metals and wood in construction waste, reserving construction solid waste, cleaning the construction solid waste with water, removing dust and impurities, and obtaining pure construction waste.
6. The environment-friendly composite wall brick and the manufacturing method thereof according to claim 1, wherein the environment-friendly composite wall brick is characterized in that: the coal cinder is purified coal cinder obtained by removing dust and impurities through water cleaning.
7. The environment-friendly composite wall brick and the manufacturing method thereof according to claim 1, wherein the environment-friendly composite wall brick is characterized in that: the sludge pretreatment specifically comprises the following steps:
s21: adding a sludge dehydrating agent into the sludge to condition the sludge, destroying the stable structure of sludge colloid and enlarging large granule gaps;
s22: the sludge odor in the transportation process and the utilization process is controlled by adding a deodorant and changing the transportation mode;
s23: the stabilizer is added to inhibit the toxicity of heavy metals on microorganisms and change the existence form of the heavy metals.
8. The environment-friendly composite wall brick and the manufacturing method thereof according to claim 7, wherein: the sludge dehydrating agent is formed by mixing calcium-containing substance powder and aluminum-containing substance powder, wherein the calcium-containing substance powder is calcium hypochlorite, the aluminum-containing substance powder is aluminum sulfate, and the mass ratio of calcium to aluminum in the total components is 9: 1; adding the sludge dehydrating agent accounting for 5-10% of the dry sludge by mass, reacting for more than 8 hours at the ambient temperature of 30-35 ℃, and standing for 2 hours to remove water produced after the sludge is broken into gel.
9. The environment-friendly composite wall brick and the manufacturing method thereof according to claim 7, wherein: the deodorant is prepared by mixing 50-65% of coal powder and 35-50% of calcium hypochlorite powder by mass percent, is added according to the proportion that the deodorant accounts for 3-10 per mill of the mass of the sludge, is uniformly stirred and mixed, and is kept stand at normal temperature for more than 3 hours.
10. The environment-friendly composite wall brick and the manufacturing method thereof according to claim 7, wherein: the stabilizer is a chelating organic compound, the dosage of the stabilizer per liter of sludge is 2-5g, and the stabilizer reacts for 15-30min at normal temperature after being uniformly mixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110653041.0A CN113292303A (en) | 2021-06-11 | 2021-06-11 | Environment-friendly composite material wall brick and manufacturing method thereof |
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| CN202110653041.0A CN113292303A (en) | 2021-06-11 | 2021-06-11 | Environment-friendly composite material wall brick and manufacturing method thereof |
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| CN (1) | CN113292303A (en) |
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Application publication date: 20210824 |