CN110950635A - Method for treating construction waste - Google Patents

Method for treating construction waste Download PDF

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Publication number
CN110950635A
CN110950635A CN201911158146.8A CN201911158146A CN110950635A CN 110950635 A CN110950635 A CN 110950635A CN 201911158146 A CN201911158146 A CN 201911158146A CN 110950635 A CN110950635 A CN 110950635A
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CN
China
Prior art keywords
construction waste
brick
aging treatment
kiln
waste
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911158146.8A
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Chinese (zh)
Inventor
陈大军
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Individual
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Individual
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Priority to CN201911158146.8A priority Critical patent/CN110950635A/en
Publication of CN110950635A publication Critical patent/CN110950635A/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/135—Combustion residues, e.g. fly ash, incineration waste
    • C04B33/1352—Fuel ashes, e.g. fly ash
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Processing Of Solid Wastes (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

The invention discloses a method for treating construction waste, which comprises the steps of crushing the construction waste, and removing impurities to obtain construction waste powder; adding unexpanded vermiculite; adding water for stacking, and performing aging treatment to obtain the construction waste after impurity removal and aging treatment; mixing one or two of fly ash or coal gangue with the construction waste, sludge and adhesive which are subjected to impurity removal and aging treatment according to a proportion; and (3) forming and drying the sintered brick, roasting in a brick kiln, and taking out of the kiln to obtain the building brick for reuse. The building garbage brick has the advantages of good seepage resistance, good flexibility, strong deformation resistance, strong freezing resistance, convenient installation, low comprehensive cost and the like, and can be produced all year round and used in a centralized way; small engineering quantity, small occupied area and low cost. Therefore, the invention can utilize the construction waste as the main raw material to the utmost extent, not only can change waste into valuables, but also has simple production method and low production cost of the product.

Description

Method for treating construction waste
Technical Field
The invention belongs to the technical field of construction waste treatment, and relates to a construction waste treatment method.
Background
The construction waste refers to the construction waste residue generated after the demolition of artificial construction structures, is generally generated in the process of construction or in the process of maintenance and demolition of old buildings, and is one of important types of municipal solid waste. Along with the pace of modern construction of our country, construction waste is increasing day by day. And hundreds of tons or even thousands of tons of construction wastes are generated when one building is dismantled. The construction waste occupies space, pollutes underground water and air and is difficult to decompose. In 2008, how much construction waste is generated by the earthquake, and how to clean and dispose the construction waste becomes a common concern of all social circles. How to effectively and appropriately recycle the construction waste has important significance on recycling resources and suggesting a conservation-oriented society. With the rapid development of the national infrastructure, the building bricks are more and more in demand. The prior traditional brick making technology in China is to make bricks by sintering clay, because a large amount of cultivated land needs to be excavated, a large amount of damages are caused to basic farmlands, and the state obviously forbids the production and use of solid clay bricks and limits the production and use of porous clay bricks. Thus, some brick and tile plants are facing the development dilemma of raw material shortage.
Disclosure of Invention
The invention aims to provide a method for treating construction waste, which solves the problem that the construction waste is difficult to treat in the prior art.
The technical scheme adopted by the invention is as follows: a method for treating construction waste is characterized by comprising the following steps:
step 1: crushing the construction waste, and removing impurities to obtain construction waste powder;
step 2: adding unexpanded vermiculite into the garbage powder in the step 1;
and step 3: adding water into the product obtained in the step (2) for stacking, and performing aging treatment to obtain the construction waste after impurity removal and aging treatment;
and 4, step 4: one or two of fly ash or coal gangue is mixed with the construction waste, sludge and adhesive which are removed of impurities and are aged according to a proportion;
and 5: vibrating and molding the mixture by using a precast block molding machine;
step 6: and (3) forming and drying the sintered brick, roasting in a brick kiln, and taking out of the kiln to obtain the building brick for reuse.
The vibration striking force of the precast block forming machine in the step 5 is 120-170 KN.
Step 5 the vibration frequency of the precast block forming machine is 2880 and 3600 times per minute.
And 2, the mass of the unexpanded vermiculite is 20-70% of the mass of the garbage powder.
The aging time in the step 3 is 10-15 days.
The invention has the beneficial effects that: the building waste brick prepared by the invention has the advantages of good seepage resistance, good flexibility, strong deformation resistance, strong freezing resistance, convenient installation, low comprehensive cost and the like, has strong adaptability, can be produced industrially, ensures the quality of concrete, and can be produced throughout the year and used in a centralized way; small engineering quantity, small occupied area and low cost. Therefore, the invention can utilize the construction waste as the main raw material to the utmost extent, not only can change waste into valuable, but also has simple production method and low production cost of the product,
Detailed Description
The technical solution of the present invention will be described in detail with reference to the specific embodiments.
A method for treating construction waste comprises the following steps:
step 1: crushing the construction waste, and removing impurities to obtain construction waste powder;
step 2: adding unexpanded vermiculite into the garbage powder in the step 1;
and step 3: adding water into the product obtained in the step (2) for stacking, and performing aging treatment to obtain the construction waste after impurity removal and aging treatment;
and 4, step 4: one or two of fly ash or coal gangue is mixed with the construction waste, sludge and adhesive which are removed of impurities and are aged according to a proportion;
and 5: vibrating and molding the mixture by using a precast block molding machine;
step 6: and (3) forming and drying the sintered brick, roasting in a brick kiln, and taking out of the kiln to obtain the building brick for reuse.
The vibration striking force of the precast block forming machine in the step 5 is 120-170 KN.
Step 5 the vibration frequency of the precast block forming machine is 2880 and 3600 times per minute.
And 2, the mass of the unexpanded vermiculite is 20-70% of the mass of the garbage powder.
The aging time in the step 3 is 10-15 days.
Example (b):
1. step 1: crushing the construction waste, and removing impurities to obtain construction waste powder;
step 2: adding unexpanded vermiculite into the garbage powder in the step 1;
and step 3: adding water into the product obtained in the step (2) for stacking, and performing aging treatment to obtain the construction waste after impurity removal and aging treatment;
and 4, step 4: one or two of fly ash or coal gangue is mixed with the construction waste, sludge and adhesive which are removed of impurities and are aged according to a proportion;
and 5: vibrating and molding the mixture by using a precast block molding machine;
step 6: and (3) forming and drying the sintered brick, roasting in a brick kiln, and taking out of the kiln to obtain the building brick for reuse.
And 5, the vibration striking force of the precast block forming machine is 120 KN.
Step 5 the vibration frequency of the precast block forming machine is 2880 times per minute.
And 2, the mass of the unexpanded vermiculite is 20% of the mass of the garbage powder.
The aging time in step 3 was 10 days.
The building brick is successfully prepared, and the strength of the building brick meets the construction requirement.
2. Step 1: crushing the construction waste, and removing impurities to obtain construction waste powder;
step 2: adding unexpanded vermiculite into the garbage powder in the step 1;
and step 3: adding water into the product obtained in the step (2) for stacking, and performing aging treatment to obtain the construction waste after impurity removal and aging treatment;
and 4, step 4: one or two of fly ash or coal gangue is mixed with the construction waste, sludge and adhesive which are removed of impurities and are aged according to a proportion;
and 5: vibrating and molding the mixture by using a precast block molding machine;
step 6: and (3) forming and drying the sintered brick, roasting in a brick kiln, and taking out of the kiln to obtain the building brick for reuse.
And 5, the vibration force of the precast block forming machine is 170 KN.
And 5, the vibration frequency of the precast block forming machine is 3600 times per minute.
And 2, the mass of the unexpanded vermiculite is 70% of the mass of the garbage powder.
The aging time in step 3 was 15 days.
The building brick is successfully prepared, and the strength of the building brick meets the construction requirement.
3. Step 1: crushing the construction waste, and removing impurities to obtain construction waste powder;
step 2: adding unexpanded vermiculite into the garbage powder in the step 1;
and step 3: adding water into the product obtained in the step (2) for stacking, and performing aging treatment to obtain the construction waste after impurity removal and aging treatment;
and 4, step 4: one or two of fly ash or coal gangue is mixed with the construction waste, sludge and adhesive which are removed of impurities and are aged according to a proportion;
and 5: vibrating and molding the mixture by using a precast block molding machine;
step 6: and (3) forming and drying the sintered brick, roasting in a brick kiln, and taking out of the kiln to obtain the building brick for reuse.
And in the step 5, the vibration striking force of the precast block forming machine is 130 KN.
Step 5 the vibration frequency of the precast block forming machine is 2890 times per minute.
And 2, the mass of the unexpanded vermiculite is 30% of the mass of the garbage powder.
The aging time in step 3 was 11 days.
The building brick is successfully prepared, and the strength of the building brick meets the construction requirement.
4. Step 1: crushing the construction waste, and removing impurities to obtain construction waste powder;
step 2: adding unexpanded vermiculite into the garbage powder in the step 1;
and step 3: adding water into the product obtained in the step (2) for stacking, and performing aging treatment to obtain the construction waste after impurity removal and aging treatment;
and 4, step 4: one or two of fly ash or coal gangue is mixed with the construction waste, sludge and adhesive which are removed of impurities and are aged according to a proportion;
and 5: vibrating and molding the mixture by using a precast block molding machine;
step 6: and (3) forming and drying the sintered brick, roasting in a brick kiln, and taking out of the kiln to obtain the building brick for reuse.
And 5, the vibration striking force of the precast block forming machine is 150 KN.
Step 5 the vibration frequency of the precast block forming machine is 3100 times per minute.
And 2, the mass of the unexpanded vermiculite is 50% of the mass of the garbage powder.
The aging time in step 3 was 13 days.
The building brick is successfully prepared, and the strength of the building brick meets the construction requirement.
5. Step 1: crushing the construction waste, and removing impurities to obtain construction waste powder;
step 2: adding unexpanded vermiculite into the garbage powder in the step 1;
and step 3: adding water into the product obtained in the step (2) for stacking, and performing aging treatment to obtain the construction waste after impurity removal and aging treatment;
and 4, step 4: one or two of fly ash or coal gangue is mixed with the construction waste, sludge and adhesive which are removed of impurities and are aged according to a proportion;
and 5: vibrating and molding the mixture by using a precast block molding machine;
step 6: and (3) forming and drying the sintered brick, roasting in a brick kiln, and taking out of the kiln to obtain the building brick for reuse.
And 5, the vibration striking force of the precast block forming machine is 160 KN.
And 5, the vibration frequency of the precast block forming machine is 3500 times per minute.
And 2, the mass of the unexpanded vermiculite is 60% of the mass of the garbage powder.
The aging time in step 3 was 14 days.
The building brick is successfully prepared, and the strength of the building brick meets the construction requirement.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, substitutions, improvements, etc. can be made without departing from the spirit of the invention.

Claims (5)

1. A method for treating construction waste is characterized by comprising the following steps:
step 1: crushing the construction waste, and removing impurities to obtain construction waste powder;
step 2: adding unexpanded vermiculite into the garbage powder in the step 1;
and step 3: adding water into the product obtained in the step (2) for stacking, and performing aging treatment to obtain the construction waste after impurity removal and aging treatment;
and 4, step 4: one or two of fly ash or coal gangue is mixed with the construction waste, sludge and adhesive which are removed of impurities and are aged according to a proportion;
and 5: vibrating and molding the mixture by using a precast block molding machine;
step 6: and (3) forming and drying the sintered brick, roasting in a brick kiln, and taking out of the kiln to obtain the building brick for reuse.
2. The method as claimed in claim 1, wherein the vibration force of the precast block forming machine in step 5 is 120-170 KN.
3. The method as claimed in claim 2, wherein the vibration frequency of the prefabricated block forming machine in step 5 is 2880 and 3600 times per minute.
4. The method for treating the construction waste according to claim 1, wherein the mass of the unexpanded vermiculite in the step 2 is 20-70% of the mass of the waste powder.
5. The method for treating construction waste as claimed in claim 1, wherein the aging period in step 3 is 10-15 days.
CN201911158146.8A 2019-11-22 2019-11-22 Method for treating construction waste Pending CN110950635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911158146.8A CN110950635A (en) 2019-11-22 2019-11-22 Method for treating construction waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911158146.8A CN110950635A (en) 2019-11-22 2019-11-22 Method for treating construction waste

Publications (1)

Publication Number Publication Date
CN110950635A true CN110950635A (en) 2020-04-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911158146.8A Pending CN110950635A (en) 2019-11-22 2019-11-22 Method for treating construction waste

Country Status (1)

Country Link
CN (1) CN110950635A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001353479A (en) * 2000-06-14 2001-12-25 Ig Tech Res Inc Sintered body by safening reaction of building waste material containing asbestos
CN101666129A (en) * 2009-08-04 2010-03-10 上海鑫晶山淤泥研发有限公司 Construction waste sintering brick and production method thereof
CN106116514A (en) * 2016-06-23 2016-11-16 福鼎市利民城市建筑垃圾处理有限公司 A kind of Novel self-heat preserving fired brick containing building waste and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001353479A (en) * 2000-06-14 2001-12-25 Ig Tech Res Inc Sintered body by safening reaction of building waste material containing asbestos
CN101666129A (en) * 2009-08-04 2010-03-10 上海鑫晶山淤泥研发有限公司 Construction waste sintering brick and production method thereof
CN106116514A (en) * 2016-06-23 2016-11-16 福鼎市利民城市建筑垃圾处理有限公司 A kind of Novel self-heat preserving fired brick containing building waste and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
毕由增等: "《实用砖瓦隧道焙烧窑烧成工艺技术》", 30 September 2012 *

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Application publication date: 20200403