CN112250361A - Method for preparing baking-free lightweight aggregate from shield waste slurry - Google Patents
Method for preparing baking-free lightweight aggregate from shield waste slurry Download PDFInfo
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- CN112250361A CN112250361A CN202011141593.5A CN202011141593A CN112250361A CN 112250361 A CN112250361 A CN 112250361A CN 202011141593 A CN202011141593 A CN 202011141593A CN 112250361 A CN112250361 A CN 112250361A
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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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
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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
- 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
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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
- 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
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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
- 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
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- Inorganic Chemistry (AREA)
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- Structural Engineering (AREA)
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for preparing baking-free lightweight aggregate from shield waste slurry, which comprises the following steps: the shield waste slurry, the building garbage, the mineral powder and the excitant are respectively prepared from the following components in percentage by mass: 55-65% of shield waste slurry, 20-25% of construction waste, 15-20% of mineral powder and 2-3% of excitant; the method comprises the following steps of firstly, selecting raw materials; step two, stirring and processing; step three, injecting a grinding tool; step four, sand making and processing; step five, storing and placing; in the first step, the components in percentage by mass are as follows: selecting 55-65% of shield waste slurry, 20-25% of construction waste, 15-20% of mineral powder and 2-3% of excitant; the method is safe and reliable, the preparation method is simple and feasible, the energy consumption is low, the cost is low, the production efficiency is high, the processing and the production of the baking-free lightweight aggregate prepared from the shield waste slurry are convenient, the shield waste slurry is recycled, the reduction, the harmlessness, the recycling and the stabilization are realized through scientific treatment, the cost is low, and the energy is saved and the environment is protected.
Description
Technical Field
The invention relates to the technical field of solid waste resource utilization, in particular to a method for preparing baking-free lightweight aggregate from shield waste slurry.
Background
The conversion from solid waste to useful substances is called the comprehensive utilization of the solid waste, or called the resource utilization of the solid waste, namely the resource utilization of the solid waste refers to the comprehensive utilization of the solid waste and leads the solid waste to become available secondary resources; the traditional method for preparing the non-fired lightweight aggregate by using the shield waste slurry needs high-temperature processing, wastes time and labor, has high energy consumption, high cost and low production efficiency, is inconvenient for processing and producing the non-fired lightweight aggregate by using the shield waste slurry, cannot utilize the shield waste slurry as resources, and is not beneficial to energy conservation and environmental protection; aiming at the defects, it is necessary to design a method for preparing the baking-free lightweight aggregate by using the shield waste slurry.
Disclosure of Invention
The invention aims to provide a method for preparing a baking-free lightweight aggregate by using shield waste slurry, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a baking-free lightweight aggregate prepared from shield waste slurry comprises the following components in percentage by weight: the shield waste slurry, the building garbage, the mineral powder and the excitant are respectively prepared from the following components in percentage by mass: 55-65% of shield waste slurry, 20-25% of construction waste, 15-20% of mineral powder and 2-3% of excitant.
A method for preparing baking-free lightweight aggregate from shield waste slurry comprises the following steps of firstly, selecting raw materials; step two, stirring and processing; step three, injecting a grinding tool; step four, sand making and processing; step five, storing and placing;
in the first step, the components in percentage by mass are as follows: selecting 55-65% of shield waste slurry, 20-25% of construction waste, 15-20% of mineral powder and 2-3% of excitant;
in the second step, the stirring processing comprises the following steps:
1) screening the shield waste slurry, the building garbage and the mineral powder manually, picking out particles, filtering the particles through a filter screen, and continuously filtering for 2-3 times;
2) cleaning the reaction kettle, pouring the shield waste slurry and the construction waste, stirring for 10-20min, adding the mineral powder and the exciting agent, and continuously stirring for 1-2 h;
3) sealing and standing for 10-20min after stirring;
in the third step, the injection grinding tool comprises the following steps:
1) manually pouring out the mixture stirred in the step two 3), filtering for 2-3 times again, and then pouring the mixture into a slurry pump;
2) starting a slurry pump to stir and crush the slurry, injecting the slurry into a grinding tool through a pump pipe, sealing the grinding tool after the injection is finished, and standing for 24-28 h;
in the fourth step, the sand making process comprises the following steps:
1) manually opening the grinding tool in the step three 2), taking out the mixture, spraying water to clean the mixture, drying the mixture, and then placing the mixture in a humid environment to maintain for 2 weeks;
2) putting the dried mixture into a sand making machine, and opening the sand making machine to prepare the baking-free lightweight aggregate;
and in the fifth step, the baking-free lightweight aggregate prepared from the shield waste slurry in the fourth step 2) is manually bundled and packaged, and then is boxed and stored in a shady and cool place.
According to the technical scheme, the components are as follows by mass: 62 percent of shield waste slurry, 20 percent of construction waste, 15 percent of mineral powder and 3 percent of excitant.
According to the technical scheme, the shield waste slurry is waste slurry generated in subway construction or tunnel engineering construction, and the water content is about 70%.
According to the technical scheme, the construction waste is also called construction waste, and the waste concrete or waste clay brick is required to be processed into 3-5mm recycled aggregate.
According to the technical scheme, the mineral powder is solid waste water-quenched slag of an iron-making plant, and is required to be dried and then ground to be more than 200 meshes of fineness.
According to the technical scheme, the excitant is a saline-alkali composite material.
According to the technical scheme, in the fifth step, disinfection treatment is required before boxing.
Compared with the prior art, the invention has the following beneficial effects: the method is safe and reliable, the preparation method is simple and easy to implement, high-temperature processing is not needed, time and labor are saved, energy consumption is low, cost is low, production efficiency is high, processing and production of the unfired lightweight aggregate prepared from the shield waste slurry are facilitated, the shield waste slurry is recycled, reduction, harmlessness, recycling and stabilization are realized through scientific treatment, cost is low, and energy conservation and environmental protection are realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
Referring to fig. 1, the present invention provides a technical solution: a method for preparing baking-free lightweight aggregate from shield waste slurry comprises the following steps:
example 1:
a baking-free lightweight aggregate prepared from shield waste slurry comprises the following components in percentage by weight: the shield waste slurry, the building garbage, the mineral powder and the excitant are respectively prepared from the following components in percentage by mass: 57% of shield waste slurry, 25% of construction waste, 15% of mineral powder and 3% of excitant.
A method for preparing baking-free lightweight aggregate from shield waste slurry comprises the following steps of firstly, selecting raw materials; step two, stirring and processing; step three, injecting a grinding tool; step four, sand making and processing; step five, storing and placing;
in the first step, the components in percentage by mass are as follows: selecting 57% of shield waste slurry, 25% of construction waste, 15% of mineral powder and 3% of excitant;
in the second step, the stirring processing comprises the following steps:
1) screening the shield waste slurry, the building garbage and the mineral powder manually, picking out particles, filtering the particles through a filter screen, and continuously filtering for 2-3 times;
2) cleaning the reaction kettle, pouring the shield waste slurry and the construction waste, stirring for 10-20min, adding the mineral powder and the exciting agent, and continuously stirring for 1-2 h;
3) sealing and standing for 10-20min after stirring;
in the third step, the injection grinding tool comprises the following steps:
1) manually pouring out the mixture stirred in the step two 3), filtering for 2-3 times again, and then pouring the mixture into a slurry pump;
2) starting a slurry pump to stir and crush the slurry, injecting the slurry into a grinding tool through a pump pipe, sealing the grinding tool after the injection is finished, and standing for 24-28 h;
in the fourth step, the sand making process comprises the following steps:
1) manually opening the grinding tool in the step three 2), taking out the mixture, spraying water to clean the mixture, drying the mixture, and then placing the mixture in a humid environment to maintain for 2 weeks;
2) putting the dried mixture into a sand making machine, and opening the sand making machine to prepare the baking-free lightweight aggregate;
and in the fifth step, the baking-free lightweight aggregate prepared from the shield waste slurry in the fourth step 2) is manually bundled and packaged, and then is boxed and stored in a cool place, and disinfection treatment is required before boxing.
Wherein the shield waste slurry is waste slurry generated in subway construction or tunnel engineering construction, and the water content is about 70%; the construction waste is also called construction waste, and the waste concrete or waste clay brick is required to be processed into 3-5mm recycled aggregate; the mineral powder is solid waste water-quenched slag of an iron-making plant, and is required to be dried and then ground to be more than 200 meshes of fineness; the excitant is a saline-alkali composite material.
Example 2:
a baking-free lightweight aggregate prepared from shield waste slurry comprises the following components in percentage by weight: the shield waste slurry, the building garbage, the mineral powder and the excitant are respectively prepared from the following components in percentage by mass: 62 percent of shield waste slurry, 20 percent of construction waste, 15 percent of mineral powder and 3 percent of excitant.
A method for preparing baking-free lightweight aggregate from shield waste slurry comprises the following steps of firstly, selecting raw materials; step two, stirring and processing; step three, injecting a grinding tool; step four, sand making and processing; step five, storing and placing;
in the first step, the components in percentage by mass are as follows: selecting 62% of shield waste slurry, 20% of construction waste, 15% of mineral powder and 3% of excitant;
in the second step, the stirring processing comprises the following steps:
1) screening the shield waste slurry, the building garbage and the mineral powder manually, picking out particles, filtering the particles through a filter screen, and continuously filtering for 2-3 times;
2) cleaning the reaction kettle, pouring the shield waste slurry and the construction waste, stirring for 10-20min, adding the mineral powder and the exciting agent, and continuously stirring for 1-2 h;
3) sealing and standing for 10-20min after stirring;
in the third step, the injection grinding tool comprises the following steps:
1) manually pouring out the mixture stirred in the step two 3), filtering for 2-3 times again, and then pouring the mixture into a slurry pump;
2) starting a slurry pump to stir and crush the slurry, injecting the slurry into a grinding tool through a pump pipe, sealing the grinding tool after the injection is finished, and standing for 24-28 h;
in the fourth step, the sand making process comprises the following steps:
1) manually opening the grinding tool in the step three 2), taking out the mixture, spraying water to clean the mixture, drying the mixture, and then placing the mixture in a humid environment to maintain for 2 weeks;
2) putting the dried mixture into a sand making machine, and opening the sand making machine to prepare the baking-free lightweight aggregate;
and in the fifth step, the baking-free lightweight aggregate prepared from the shield waste slurry in the fourth step 2) is manually bundled and packaged, and then is boxed and stored in a cool place, and disinfection treatment is required before boxing.
Wherein the shield waste slurry is waste slurry generated in subway construction or tunnel engineering construction, and the water content is about 70%; the construction waste is also called construction waste, and the waste concrete or waste clay brick is required to be processed into 3-5mm recycled aggregate; the mineral powder is solid waste water-quenched slag of an iron-making plant, and is required to be dried and then ground to be more than 200 meshes of fineness; the excitant is a saline-alkali composite material.
Example 3:
a baking-free lightweight aggregate prepared from shield waste slurry comprises the following components in percentage by weight: the shield waste slurry, the building garbage, the mineral powder and the excitant are respectively prepared from the following components in percentage by mass: 57% of shield waste slurry, 20% of construction waste, 20% of mineral powder and 3% of excitant.
A method for preparing baking-free lightweight aggregate from shield waste slurry comprises the following steps of firstly, selecting raw materials; step two, stirring and processing; step three, injecting a grinding tool; step four, sand making and processing; step five, storing and placing;
in the first step, the components in percentage by mass are as follows: selecting 57% of shield waste slurry, 20% of construction waste, 20% of mineral powder and 3% of excitant;
in the second step, the stirring processing comprises the following steps:
1) screening the shield waste slurry, the building garbage and the mineral powder manually, picking out particles, filtering the particles through a filter screen, and continuously filtering for 2-3 times;
2) cleaning the reaction kettle, pouring the shield waste slurry and the construction waste, stirring for 10-20min, adding the mineral powder and the exciting agent, and continuously stirring for 1-2 h;
3) sealing and standing for 10-20min after stirring;
in the third step, the injection grinding tool comprises the following steps:
1) manually pouring out the mixture stirred in the step two 3), filtering for 2-3 times again, and then pouring the mixture into a slurry pump;
2) starting a slurry pump to stir and crush the slurry, injecting the slurry into a grinding tool through a pump pipe, sealing the grinding tool after the injection is finished, and standing for 24-28 h;
in the fourth step, the sand making process comprises the following steps:
1) manually opening the grinding tool in the step three 2), taking out the mixture, spraying water to clean the mixture, drying the mixture, and then placing the mixture in a humid environment to maintain for 2 weeks;
2) putting the dried mixture into a sand making machine, and opening the sand making machine to prepare the baking-free lightweight aggregate;
and in the fifth step, the baking-free lightweight aggregate prepared from the shield waste slurry in the fourth step 2) is manually bundled and packaged, and then is boxed and stored in a cool place, and disinfection treatment is required before boxing.
Wherein the shield waste slurry is waste slurry generated in subway construction or tunnel engineering construction, and the water content is about 70%; the construction waste is also called construction waste, and the waste concrete or waste clay brick is required to be processed into 3-5mm recycled aggregate; the mineral powder is solid waste water-quenched slag of an iron-making plant, and is required to be dried and then ground to be more than 200 meshes of fineness; the excitant is a saline-alkali composite material.
The properties of the examples are compared in the following table:
based on the above, the method has the advantages of safety, reliability, simplicity and feasibility in preparation method, no need of high-temperature processing, time and labor saving, low energy consumption, low cost, high production efficiency, convenience in processing and production of the unfired lightweight aggregate prepared from the shield waste slurry, resource utilization of the shield waste slurry, reduction, harmlessness, resource utilization and stabilization through scientific treatment, low cost, energy conservation and environmental protection.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A baking-free lightweight aggregate prepared from shield waste slurry is characterized in that: the formula comprises the following components: the shield waste slurry, the building garbage, the mineral powder and the excitant are respectively prepared from the following components in percentage by mass: 55-65% of shield waste slurry, 20-25% of construction waste, 15-20% of mineral powder and 2-3% of excitant.
2. A method for preparing baking-free lightweight aggregate from shield waste slurry comprises the following steps of firstly, selecting raw materials; step two, stirring and processing; step three, injecting a grinding tool; step four, sand making and processing; step five, storing and placing; the method is characterized in that:
in the first step, the components in percentage by mass are as follows: selecting 55-65% of shield waste slurry, 20-25% of construction waste, 15-20% of mineral powder and 2-3% of excitant;
in the second step, the stirring processing comprises the following steps:
1) screening the shield waste slurry, the building garbage and the mineral powder manually, picking out particles, filtering the particles through a filter screen, and continuously filtering for 2-3 times;
2) cleaning the reaction kettle, pouring the shield waste slurry and the construction waste, stirring for 10-20min, adding the mineral powder and the exciting agent, and continuously stirring for 1-2 h;
3) sealing and standing for 10-20min after stirring;
in the third step, the injection grinding tool comprises the following steps:
1) manually pouring out the mixture stirred in the step two 3), filtering for 2-3 times again, and then pouring the mixture into a slurry pump;
2) starting a slurry pump to stir and crush the slurry, injecting the slurry into a grinding tool through a pump pipe, sealing the grinding tool after the injection is finished, and standing for 24-28 h;
in the fourth step, the sand making process comprises the following steps:
1) manually opening the grinding tool in the step three 2), taking out the mixture, spraying water to clean the mixture, drying the mixture, and then placing the mixture in a humid environment to maintain for 2 weeks;
2) putting the dried mixture into a sand making machine, and opening the sand making machine to prepare the baking-free lightweight aggregate;
and in the fifth step, the baking-free lightweight aggregate prepared from the shield waste slurry in the fourth step 2) is manually bundled and packaged, and then is boxed and stored in a shady and cool place.
3. The shield waste slurry prepared non-fired lightweight aggregate according to claim 1, which is characterized in that: the mass contents of the components are respectively as follows: 62 percent of shield waste slurry, 20 percent of construction waste, 15 percent of mineral powder and 3 percent of excitant.
4. The shield waste slurry prepared non-fired lightweight aggregate according to claim 1, which is characterized in that: the shield waste slurry is waste slurry generated in subway construction or tunnel engineering construction, and the water content is about 70%.
5. The shield waste slurry prepared non-fired lightweight aggregate according to claim 1, which is characterized in that: the construction waste is also called construction waste, and the waste concrete or waste clay brick is required to be processed into 3-5mm recycled aggregate.
6. The shield waste slurry prepared non-fired lightweight aggregate according to claim 1, which is characterized in that: the mineral powder is solid waste water-quenched slag of an iron-making plant, and is required to be dried and then ground to be more than 200 meshes of fineness.
7. The shield waste slurry prepared non-fired lightweight aggregate according to claim 1, which is characterized in that: the excitant is a saline-alkali composite material.
8. The method for preparing the baking-free lightweight aggregate from the shield waste slurry as claimed in claim 2, wherein the method comprises the following steps: and in the fifth step, disinfection treatment is required before boxing.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111393117A (en) * | 2020-03-24 | 2020-07-10 | 中国建筑第五工程局有限公司 | Water-containing undisturbed shield muck baking-free building material and preparation method thereof |
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2020
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