CN111978050A - Polyaluminium chloride waste residue dry-mixed mortar and preparation method thereof - Google Patents
Polyaluminium chloride waste residue dry-mixed mortar and preparation method thereof Download PDFInfo
- Publication number
- CN111978050A CN111978050A CN202010929177.5A CN202010929177A CN111978050A CN 111978050 A CN111978050 A CN 111978050A CN 202010929177 A CN202010929177 A CN 202010929177A CN 111978050 A CN111978050 A CN 111978050A
- Authority
- CN
- China
- Prior art keywords
- waste residue
- polyaluminium chloride
- chloride waste
- parts
- mixed mortar
- 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.)
- Granted
Links
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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- 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
Abstract
The invention discloses polyaluminium chloride waste residue dry-mixed mortar and a preparation method thereof, wherein the dry-mixed mortar comprises the following raw materials in parts by mass: 4-8 parts of thermal activation polyaluminium chloride waste residue, 23-25 parts of cement, 55-60 parts of sand, 4-6 parts of fly ash, 0.05-0.15 part of defoaming agent, 0.20-0.22 part of water reducing agent and 5-9% of polymer emulsion of the total mass of the raw materials. The invention adopts the industrial waste polyaluminium chloride waste residue and the fly ash to replace cement with high energy consumption to prepare the cement mortar, thereby not only effectively reducing the mass stacking of the polyaluminium chloride waste residue, but also reducing the usage amount of the cement with high energy consumption, and having good social benefit and economic benefit. The preparation method of the polyaluminium chloride waste residue dry-mixed mortar is simple, has low cost, is beneficial to industrial production and popularization, can obviously improve the resource utilization of the polyaluminium chloride waste residue, and has important significance in the aspects of reducing construction cost, reducing environmental pollution and the like.
Description
Technical Field
The invention relates to polyaluminium chloride waste residue dry-mixed mortar and a preparation method thereof, belonging to the technical field of resource utilization of industrial waste.
Background
The polyaluminium Chloride waste residue is a byproduct generated in the industrial production of polyaluminium Chloride, the polyaluminium Chloride (PAC) is a high-efficiency flocculant in water treatment, a plurality of methods for producing the polyaluminium Chloride (PAC) at home and abroad are common, a two-step method of acid dissolution of bauxite and calcium aluminate powder is adopted as a common method, namely, the bauxite and the calcium aluminate powder react with hydrochloric acid or mixed acid under certain conditions to obtain liquid polyaluminium Chloride (PAC), and residual solids form waste residue. About 0.5-1.0 ton of waste slag is generated in each 1 ton of polyaluminium chloride, and along with the gradual improvement of the environmental protection requirement, the demand for the polyaluminium chloride is continuously increased, and a large amount of waste slag is generated. At present, most of the waste residues are transported to a landfill site for deep burying treatment, or the waste residues are subjected to harmless treatment and then stockpiled according to Chinese patent CN 109351762A' a harmless treatment system and process for polyaluminium chloride water purifying agent waste residues. The stacking method not only occupies a large amount of land to cause environmental pollution, but also can not reasonably utilize available components in the waste residue to cause resource waste, and seriously limits the further development of the current water purifying agent industry, so that the method continuously explores and researches a new utilization way of the polyaluminium chloride waste residue, can consume the polyaluminium chloride waste residue on a large scale, and is the main trend of utilizing the polyaluminium chloride waste residue at present.
Because the PAC waste residue has certain faintly acid and Cl in the PAC waste residue-The content is as high as 8.85 percent, so the PAC waste residue can not be directly used as a building material. Furthermore, although SiO is contained in the PAC waste residue2And Al2O3Is not low, 34.74% and 22.55%, respectively, but SiO in an acidic environment2And Al2O3The chemical activity of PAC is not well utilized, and thus the utilization of PAC waste is greatly limited. In the prior art, the documents for resource utilization by using the polyaluminium chloride waste residue as the raw material are less, so that the development of cement mortar containing the polyaluminium chloride waste residue and a preparation method thereof is a problem to be researched by the technical personnel in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the polyaluminium chloride waste residue dry-mixed mortar and the preparation method thereof, which can reduce the stacking of the polyaluminium chloride industrial waste, realize the reclamation of the waste, simultaneously reduce the pollution to the natural environment and reduce the dosage of the mortar to the cement.
In order to achieve the above object, one of the technical solutions of the present invention is:
the polyaluminium chloride waste residue dry-mixed mortar comprises the following raw materials in parts by mass: 4-8 parts of thermal activation polyaluminium chloride waste residue, 23-25 parts of cement, 55-60 parts of sand, 4-6 parts of fly ash, 0.05-0.15 part of defoaming agent, 0.20-0.22 part of water reducing agent and 5-9% of polymer emulsion of the total mass of the raw materials.
The preparation method of the waste residue of the thermally activated polyaluminium chloride comprises the following steps: firstly, grinding the polyaluminium chloride waste residue, then calcining at the high temperature of 800-1100 ℃ for 2-3 h, and cooling to obtain the polyaluminium chloride.
The method for pretreating the polyaluminium chloride waste residue comprises the following steps: mixing the polyaluminium chloride waste residue with quicklime, stirring uniformly, adding water to prepare slurry, stirring, standing until the slurry naturally settles to obtain supernatant and precipitate, and finally drying the precipitate to obtain the pretreated polyaluminium chloride waste residue.
The mass ratio of the polyaluminium chloride waste residue to the quicklime is 100:1-50: 1.
The cement is ordinary portland cement, the fly ash is class II or above fly ash, the sand is medium sand or machine-made sand with good gradation and fineness modulus of 2.3-2.7, and the defoaming agent is a solid defoaming agent.
The water reducing agent is a polycarboxylic acid water reducing agent, and the water reducing rate of the water reducing agent is 25-30%.
The polymer emulsion is at least one of styrene-acrylic emulsion and styrene-butadiene emulsion.
The polyaluminium chloride waste residue dry-mixed mortar also comprises water, and the mass of the water is 15-20% of the total mass of the thermally activated polyaluminium chloride waste residue, cement, sand, fly ash, the defoaming agent and the water reducing agent.
One of the technical schemes of the invention is as follows: a preparation method of polyaluminium chloride waste residue dry-mixed mortar comprises the steps of mixing the raw materials in proportion.
Preferably, the thermal activation polyaluminium chloride waste residue, the cement, the sand, the fly ash and the defoaming agent are uniformly mixed to obtain a premix, and then the polymer emulsion, the water reducing agent and the water are added and uniformly stirred to obtain the polyaluminium chloride waste residue dry-mixed mortar. The invention has the beneficial effects that:
1. the method pretreats the PAC waste residue to remove the acidic components of the PAC waste residue so as to make the PAC waste residue neutral. The PAC waste residue has potential chemical activity, the specific surface area of PAC waste residue particles is increased through levigating treatment, the release of active ingredients in the PAC waste residue is facilitated in an alkaline environment formed by cement hydration, and meanwhile, the refined PAC waste residue can well fill tiny pores in the mortar. PAC waste residue is subjected to high-temperature calcination (thermal activation) to generate a large amount of amorphous active SiO2、Al2O3And CaO, SiO2And Al2O3Can react with Ca (OH) in an alkaline environment2The reaction generates hydrated calcium silicate and calcium aluminate with cementing effect, the mortar strength can be effectively improved, CaO can provide better alkaline environment for PAC waste residue in the hydration process, the potential chemical activity of the PAC waste residue is excited, and the space structure of the thermally activated polyaluminium chloride waste residueThe PAC waste residue is porous and has strong adsorbability, and in an alkaline environment formed in the cement hydration process, the PAC waste residue adsorbs alkali and undergoes chemical reaction to further excite the internal active ingredients, and a compact 'nuclear' cementing material is formed on the PAC waste residue, so that pores can be effectively filled and the aggregate can be cemented, and the cohesiveness and the strength of the mortar are effectively improved.
2. The thermal activation polyaluminium chloride waste residue used in the invention has good water-retaining property, and can effectively improve the bleeding property and segregation property of cement mortar when added into the mortar; meanwhile, the mortar has an internal curing effect, and can improve the strength and the anti-shrinkage performance of the mortar. The specific action is shown as follows: the space structure of the thermally activated polyaluminium chloride waste residue is porous, and can absorb and store a large amount of water; a large amount of water is consumed in the cement hydration process, so that the internal environment of a cement hydration system is dry, and the hydration of cement cannot be fully completed; after the thermal activation polyaluminium chloride waste residue is added, a large amount of water can be stored in the waste residue, and when a dry environment appears in the cement hydration process, the water can be provided for further and fully hydrating cement.
3. The invention uses the polymer emulsion to prepare the mortar, improves the cohesion, cohesion and structural stability of the mortar, and improves the bonding strength. The polymer emulsion has good bonding and adsorption effects, is beneficial to the adhesion of hydration products, and improves the cohesiveness of mortar.
4. The invention adopts the industrial waste polyaluminium chloride waste residue and the fly ash to replace cement with high energy consumption to prepare the cement mortar, thereby not only effectively reducing the mass stacking of the polyaluminium chloride waste residue, but also reducing the usage amount of the cement with high energy consumption, and having good social benefit and economic benefit.
5. The preparation method of the polyaluminium chloride waste residue dry-mixed mortar is simple, has low cost, is beneficial to industrial production and popularization, can obviously improve the resource utilization of the polyaluminium chloride waste residue, and has important significance in the aspects of reducing construction cost, reducing environmental pollution and the like.
Detailed Description
The following examples further illustrate the embodiments of the present invention in detail.
The cement used in the embodiment of the invention is PO42.5 common portland cement, the fly ash is class II or above fly ash, the sand is medium sand with good gradation and fineness modulus of 2.3-2.7, and the defoaming agent is gypsum defoaming agent (PD-2000A) purchased from Beijing Pianbao New technology Limited company. The water reducing agent is a polycarboxylic acid water reducing agent (PC-F) which is purchased from Beijing mu lake admixture company Limited and has a water reducing rate of 25-30%.
Thermal activation of polyaluminium chloride waste residues:
(1) pretreatment: the polyaluminium chloride waste residue is waste residue produced by producing polyaluminium chloride by a bauxite and calcium aluminate dissolution two-step method, has high acidity, and can be treated by a certain means so as to be applied to engineering. The specific treatment method comprises the following steps: mixing the polyaluminium chloride waste residue with quicklime (mass ratio is 100:1), uniformly stirring, adding water to prepare slurry, continuously stirring for 30-40 min, standing until the slurry naturally settles to obtain supernatant and precipitate, and finally drying the precipitate to obtain pretreated polyaluminium chloride waste residue. The main chemical components before and after the pretreatment of the polyaluminium chloride waste residue are shown in the table 1.
Table 1 main chemical composition (%)
| Treatment method | SiO2 | Al2O3 | CaO | Fe2O3 | TiO2 | MgO | Cl- |
| Before treatment | 34.74 | 22.55 | 3.06 | 1.21 | 1.43 | 7.98 | 8.85 |
| After treatment | 37.72 | 23.80 | 4.66 | 2.42 | 3.15 | 6.34 | 2.06 |
As can be seen from the analysis of the chemical composition of the PAC waste before and after the treatment in Table 1, Cl in the treated PAC waste-The content is obviously reduced, SiO2、Al2O3And the content of CaO is increased.
(2) Thermal activation: grinding the pretreated PAC waste residue to make the specific surface area of the waste residue be 200m2/kg-350m2And/kg, then calcining at 800-1100 ℃ for 2-3 h, and cooling to obtain the thermally activated PAC waste residue. The PAC waste residue calcined at 1000 ℃ for 2h is taken as an example, and the main chemical components are shown in Table 2.
Table 2 main chemical composition (%)
| Treatment method | SiO2 | Al2O3 | CaO | Fe2O3 | TiO2 | MgO | Cl- |
| 1000℃ | 40.15 | 25.46 | 9.58 | 4.07 | 3.59 | 1.53 | 1.83 |
As can be seen from the chemical composition analysis of the thermally activated PAC slag in Table 2, the SiO in the PAC slag after high-temperature calcination2、Al2O3And the CaO content is higher, and the CaO can provide a better alkaline environment for the PAC waste residue in the hydration process, so that the potential chemical activity of the PAC waste residue is excited.
The activity index of PAC waste residue after 2h of high-temperature calcination at 1000 ℃ was determined according to the test method of appendix A of JG/T486-2015 composite admixture for concrete and compared with first-grade Fly Ash (FA) in Table 3, and it was found that: the activity index of the thermally activated PAC waste 28d is 0.85, which indicates that the thermally activated PAC waste has high pozzolanic activity and can excite the chemical activity in an alkaline environment.
TABLE 3 thermally activated PAC waste residue Activity index
In addition, the mortar test was performed by replacing cement with different amounts of thermally activated PAC waste (calcined at 1000 ℃ for 2 hours), and the test results are shown in table 4:
TABLE 4 Cement mortar test compressive Strength test results (28d)
From the results, it can be seen that the 28d compressive strength of the heat-activated PAC waste residue is slightly higher than that of a pure cement group under the condition that the substituted cement amount is 5% -15%, and the 28d compressive strength enhancement ratio of the heat-activated PAC waste residue can still reach more than 0.9 of that of the pure cement group under the condition that the substituted cement amount is less than 20%, so that the heat-activated PAC waste residue can be used as a cementing material to replace part of cement and has better performance under a certain proportion.
Example 1
The polyaluminium chloride waste residue dry-mixed mortar comprises the following raw materials in parts by mass: 8 parts of waste thermally activated polyaluminium chloride residues (calcined at the high temperature of 800 ℃ for 2 hours), 23 parts of PO42.5 ordinary portland cement, 55 parts of medium sand, 4 parts of fly ash, 15 parts of water, 0.05 part of a defoaming agent and 0.22 part of a water reducing agent.
The preparation method of the polyaluminium chloride waste residue dry-mixed mortar comprises the following steps: sequentially adding the waste thermally activated polyaluminium chloride residue, PO42.5 ordinary portland cement, fly ash, medium sand and a defoaming agent into a mortar stirrer, and uniformly stirring (for 1-3min) to obtain a premix; and sequentially adding the water reducing agent and water into the mortar stirrer, and stirring uniformly (for 1-5min) to obtain the polyaluminium chloride waste residue dry-mixed mortar S-1.
Example 2
The polyaluminium chloride waste residue dry-mixed mortar comprises the following raw materials in parts by mass: 8 parts of waste residues of thermally activated polyaluminium chloride (calcined at the high temperature of 800 ℃ for 2 hours), 23 parts of PO42.5 ordinary portland cement, 55 parts of medium sand, 4 parts of fly ash, 15 parts of water, 5 parts of styrene-acrylic emulsion, 0.05 part of defoaming agent and 0.20 part of water reducing agent.
The preparation method of the polyaluminium chloride waste residue dry-mixed mortar comprises the following steps: sequentially adding the thermally activated polyaluminium chloride waste residue, PO42.5 ordinary portland cement, medium sand, fly ash and a defoaming agent into a mortar stirrer, and uniformly stirring (for 1-3min) to obtain a premix; and sequentially adding the styrene-acrylic emulsion, the water reducing agent and water into the mortar stirrer, and stirring uniformly (for 1-5min) to obtain the polyaluminium chloride waste residue dry-mixed mortar S-2.
Example 3
The polyaluminium chloride waste residue dry-mixed mortar comprises the following raw materials in parts by mass: 8 parts of waste residues of thermally activated polyaluminium chloride (calcined at the high temperature of 800 ℃ for 2 hours), 23 parts of PO42.5 ordinary portland cement, 55 parts of medium sand, 4 parts of fly ash, 15 parts of water, 8 parts of styrene-acrylic emulsion, 0.05 part of defoaming agent and 0.20 part of water reducing agent.
The preparation method of the polyaluminium chloride waste residue dry-mixed mortar comprises the following steps: sequentially adding the thermally activated polyaluminium chloride waste residue, PO42.5 ordinary portland cement, medium sand, fly ash and a defoaming agent into a mortar stirrer, and uniformly stirring (for 1-3min) to obtain a premix; and sequentially adding the styrene-acrylic emulsion, the water reducing agent and water into the mortar stirrer, and stirring uniformly (for 1-5min) to obtain the polyaluminium chloride waste residue dry-mixed mortar S-3.
Example 4
The polyaluminium chloride waste residue dry-mixed mortar comprises the following raw materials in parts by mass: 8 parts of thermal activation polyaluminium chloride waste residue (calcined at the high temperature of 800 ℃ for 2h), 23 parts of PO42.5 ordinary portland cement, 55 parts of medium sand, 4 parts of fly ash, 15 parts of water, 5 parts of butylbenzene emulsion, 0.05 part of defoaming agent and 0.20 part of water reducing agent.
The preparation method of the polyaluminium chloride waste residue dry-mixed mortar comprises the following steps: sequentially adding the thermally activated polyaluminium chloride waste residue, PO42.5 ordinary portland cement, medium sand, fly ash and a defoaming agent into a mortar stirrer, and uniformly stirring (for 1-3min) to obtain a premix; and sequentially adding the butylbenzene emulsion, the water reducing agent and the water into the mortar stirrer, and uniformly stirring (1-5min) to obtain the polyaluminium chloride waste residue dry-mixed mortar S-4.
Example 5
The polyaluminium chloride waste residue dry-mixed mortar comprises the following raw materials in parts by mass: 8 parts of thermal activation polyaluminium chloride waste residue (calcined at the high temperature of 800 ℃ for 2 hours), 23 parts of PO42.5 ordinary portland cement, 55 parts of medium sand, 4 parts of fly ash, 15 parts of water, 8 parts of butylbenzene emulsion, 0.05 part of defoaming agent and 0.20 part of water reducing agent.
The preparation method of the polyaluminium chloride waste residue dry-mixed mortar comprises the following steps: sequentially adding the thermally activated polyaluminium chloride waste residue, PO42.5 ordinary portland cement, medium sand, fly ash and a defoaming agent into a mortar stirrer, and uniformly stirring (for 1-3min) to obtain a premix; and sequentially adding the butylbenzene emulsion, the water reducing agent and the water into the mortar stirrer, and uniformly stirring (1-5min) to obtain the polyaluminium chloride waste residue dry-mixed mortar S-5.
Example 6
The polyaluminium chloride waste residue dry-mixed mortar comprises the following raw materials in parts by mass: 6 parts of waste residues of thermally activated polyaluminium chloride (calcined at the high temperature of 900 ℃ for 2 hours), 25 parts of PO42.5 ordinary portland cement, 55 parts of medium sand, 4 parts of fly ash, 15 parts of water, 5 parts of butylbenzene emulsion, 0.05 part of defoaming agent and 0.20 part of water reducing agent.
The preparation method of the polyaluminium chloride waste residue dry-mixed mortar comprises the following steps: sequentially adding the thermally activated polyaluminium chloride waste residue, PO42.5 ordinary portland cement, medium sand, fly ash and a defoaming agent into a mortar stirrer, and uniformly stirring (for 1-3min) to obtain a premix; and sequentially adding the butylbenzene emulsion, the water reducing agent and the water into the mortar stirrer, and uniformly stirring (1-5min) to obtain the polyaluminium chloride waste residue dry-mixed mortar S-6.
Example 7
The polyaluminium chloride waste residue dry-mixed mortar comprises the following raw materials in parts by mass: 6 parts of thermal activation polyaluminium chloride waste residue (calcined at the high temperature of 1000 ℃ for 2 hours), 25 parts of PO42.5 ordinary portland cement, 55 parts of medium sand, 4 parts of fly ash, 15 parts of water, 5 parts of butylbenzene emulsion, 0.05 part of defoaming agent and 0.20 part of water reducing agent.
The preparation method of the polyaluminium chloride waste residue dry-mixed mortar comprises the following steps: sequentially adding the thermally activated polyaluminium chloride waste residue, PO42.5 ordinary portland cement, medium sand, fly ash and a defoaming agent into a mortar stirrer, and uniformly stirring (for 1-3min) to obtain a premix; and sequentially adding the butylbenzene emulsion, the water reducing agent and the water into the mortar stirrer, and uniformly stirring (1-5min) to obtain the polyaluminium chloride waste residue dry-mixed mortar S-7.
Example 8
The polyaluminium chloride waste residue dry-mixed mortar comprises the following raw materials in parts by mass: 4 parts of thermal activation polyaluminium chloride waste residue (calcined at the high temperature of 1100 ℃ for 3 hours), 25 parts of PO42.5 ordinary portland cement, 55 parts of medium sand, 6 parts of fly ash, 15 parts of water, 5 parts of butylbenzene emulsion, 0.05 part of defoaming agent and 0.20 part of water reducing agent.
The preparation method of the polyaluminium chloride waste residue dry-mixed mortar comprises the following steps: sequentially adding the thermally activated polyaluminium chloride waste residue, PO42.5 ordinary portland cement, medium sand, fly ash and a defoaming agent into a mortar stirrer, and uniformly stirring (for 1-3min) to obtain a premix; and sequentially adding the butylbenzene emulsion, the water reducing agent and the water into the mortar stirrer, and uniformly stirring (1-5min) to obtain the polyaluminium chloride waste residue dry-mixed mortar S-8.
Example 9
The polyaluminium chloride waste residue dry-mixed mortar comprises the following raw materials in parts by mass: 6 parts of thermal activation polyaluminium chloride waste residue (calcined at the high temperature of 1100 ℃ for 3 hours), 25 parts of PO42.5 ordinary portland cement, 55 parts of medium sand, 4 parts of fly ash, 15 parts of water, 5 parts of butylbenzene emulsion, 0.05 part of defoaming agent and 0.20 part of water reducing agent.
The preparation method of the polyaluminium chloride waste residue dry-mixed mortar comprises the following steps: sequentially adding the thermally activated polyaluminium chloride waste residue, PO42.5 ordinary portland cement, medium sand, fly ash and a defoaming agent into a mortar stirrer, and uniformly stirring (for 1-3min) to obtain a premix; and sequentially adding the butylbenzene emulsion, the water reducing agent and the water into the mortar stirrer, and uniformly stirring (1-5min) to obtain the polyaluminium chloride waste residue dry-mixed mortar S-9.
Comparative data of the performance of the polyaluminium chloride waste residue dry-mixed mortar prepared in the above example are shown in Table 5.
TABLE 5 comparison of the Properties of the polyaluminium chloride sludge Dry-blended mortars of examples 1 to 9
Example 1: the strength grade of the mortar is 5MPa, the actually measured strength is 7.3MPa, and the water retention of the mortar does not meet the performance requirement of common dry-mixed mortar.
Example 2: the mortar strength grade is 10MPa, and the actual strength is 11.5 MPa.
Example 3: the strength grade of the mortar is 10MPa, and the actually measured strength is 12.8 MPa.
Example 4: the mortar strength grade is 10MPa, and the actual strength is 12.5 MPa.
Example 5: the mortar strength grade is 10MPa, and the actual strength is 13.2 MPa.
Example 6: the mortar strength grade is 15MPa, and the actual strength is 17.5 MPa.
Example 7: the mortar strength grade is 15MPa, and the actually measured strength is 17.7 MPa.
Example 8: the mortar strength grade is 20MPa, and the actual strength is 22.5 MPa.
Example 9: the mortar strength grade is 20MPa, and the actual strength is 24.5 MPa.
The embodiment mainly shows that the building mortar with different strengths can be effectively prepared by preparing the mortar with different strength grades; examples 1-5 show that with the increase of the polymer, the water retention property of the mortar becomes better, the consistency becomes larger, and that the polymer can increase the water retention property and viscosity of the mortar and improve the strength of the mortar. In examples 6 to 7, the PAC waste residues treated at different temperatures are doped to prepare the mortar, which shows that the higher the calcination temperature is, the better the activity of the PAC waste residues is, and the water retention and strength of the mortar are improved. Examples 8-9 compare the impact of the PAC waste and the fly ash on the mortar performance, which shows that the PAC waste after high temperature calcination has better activity than the fly ash, and is beneficial to improving the mortar strength.
Claims (10)
1. The polyaluminium chloride waste residue dry-mixed mortar is characterized by comprising the following raw materials in parts by mass: 4-8 parts of thermal activation polyaluminium chloride waste residue, 23-25 parts of cement, 55-60 parts of sand, 4-6 parts of fly ash, 0.05-0.15 part of defoaming agent, 0.20-0.22 part of water reducing agent and 5-9% of polymer emulsion of the total mass of the raw materials.
2. The polyaluminium chloride waste residue dry-mixed mortar of claim 1, wherein the preparation method of the thermally activated polyaluminium chloride waste residue comprises the following steps: firstly, grinding the polyaluminium chloride waste residue, then calcining at the high temperature of 800-1100 ℃ for 2-3 h, and cooling to obtain the polyaluminium chloride.
3. The polyaluminium chloride waste residue dry-mixed mortar of claim 2, wherein the polyaluminium chloride waste residue is pretreated firstly, and the specific method comprises the following steps: mixing the polyaluminium chloride waste residue with quicklime, stirring uniformly, adding water to prepare slurry, stirring, standing until the slurry naturally settles to obtain supernatant and precipitate, and finally drying the precipitate to obtain the pretreated polyaluminium chloride waste residue.
4. The polyaluminium chloride waste residue dry-mixed mortar as claimed in claim 3, wherein the mass ratio of the polyaluminium chloride waste residue to the quicklime is 100:1-50: 1.
5. The polyaluminium chloride waste residue dry-mixed mortar as claimed in claim 1, wherein the cement is ordinary portland cement, the fly ash is grade ii or above, the sand is medium sand or machine-made sand with good gradation and fineness modulus of 2.3-2.7, and the defoaming agent is a solid defoaming agent.
6. The polyaluminium chloride waste residue dry-mixed mortar of claim 1, wherein the water reducing agent is a polycarboxylic acid water reducing agent, and the water reducing rate of the water reducing agent is 25-30%.
7. The polyaluminum chloride dry-mixed mortar of waste residue of claim 1, wherein the polymer emulsion is at least one of styrene-acrylic emulsion and styrene-butadiene emulsion.
8. The polyaluminium chloride waste residue dry-mixed mortar of claim 1, further comprising water, wherein the mass of the water is 15-20% of the total mass of the thermally activated polyaluminium chloride waste residue, the cement, the sand, the fly ash, the defoaming agent and the water reducing agent.
9. A method for preparing the polyaluminium chloride waste residue dry-mixed mortar as claimed in any one of claims 1 to 8, wherein the raw materials are mixed in proportion.
10. The preparation method of the polyaluminium chloride waste residue dry-mixed mortar according to claim 9, wherein the thermally activated polyaluminium chloride waste residue, cement, sand, fly ash and the defoaming agent are uniformly mixed to obtain a premix, and then the polymer emulsion, the water reducing agent and water are added and uniformly stirred to obtain the polyaluminium chloride waste residue dry-mixed mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010929177.5A CN111978050B (en) | 2020-09-07 | 2020-09-07 | Polyaluminium chloride waste residue dry-mixed mortar and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010929177.5A CN111978050B (en) | 2020-09-07 | 2020-09-07 | Polyaluminium chloride waste residue dry-mixed mortar and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111978050A true CN111978050A (en) | 2020-11-24 |
| CN111978050B CN111978050B (en) | 2022-06-03 |
Family
ID=73448683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010929177.5A Active CN111978050B (en) | 2020-09-07 | 2020-09-07 | Polyaluminium chloride waste residue dry-mixed mortar and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111978050B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115448674A (en) * | 2022-10-26 | 2022-12-09 | 河南郑大建筑材料有限公司 | Green ultrahigh-performance concrete and preparation method and application thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0086856A1 (en) * | 1982-02-19 | 1983-08-31 | NABISCO BRANDS, Inc. | Center-filled chewing gums, a sugarless liquid fill for same and a process for preparing them |
| JPS63258539A (en) * | 1986-09-08 | 1988-10-26 | ワ−ナ−−ランバ−ト・コンパニ− | Low moisture sugarless center filled chewing gum |
| KR20060062910A (en) * | 2004-12-06 | 2006-06-12 | (주)성진화학 | Water treating composition using the aluminium dross |
| US20060280835A1 (en) * | 2004-08-25 | 2006-12-14 | Cadbury Adams Usa Llc. | Multi-modality flavored chewing gum compositions |
| CN101492271A (en) * | 2008-12-10 | 2009-07-29 | 乔占印 | Method for producing construction brick with industrial residue |
| CN101492268A (en) * | 2009-03-11 | 2009-07-29 | 朱炳喜 | Concrete mending mortar additive and formulating method for mending mortar |
| CN101792165A (en) * | 2010-03-16 | 2010-08-04 | 贵州明威环保技术有限公司 | Method for producing polymeric aluminum chloride from kaolin |
| WO2011002780A1 (en) * | 2009-07-02 | 2011-01-06 | Pneumatic Processing Technologies, Llc | Carbon heat-treatment process |
| CN102627432A (en) * | 2012-04-26 | 2012-08-08 | 昆明滇宝防水建材有限公司 | Modified polymer cement waterproof mortar |
| CN102674422A (en) * | 2012-05-22 | 2012-09-19 | 李松 | Method for preparing flocculant liquid polyaluminum chloride from aluminum ash |
| CN106866067A (en) * | 2017-01-20 | 2017-06-20 | 河南理工大学 | The production line and production method of a kind of underground filling material for blending germanium waste residue |
| CN107935502A (en) * | 2017-11-27 | 2018-04-20 | 南通大学 | Useless prepare polyaluminium chloride residue using double non-burning brick method is prepared as major ingredient |
| WO2018144068A1 (en) * | 2017-02-03 | 2018-08-09 | Saudi Arabian Oil Comapny | Compositions and methods of use of water-based drilling fluids with increased thermal stability |
| CN109437697A (en) * | 2018-12-17 | 2019-03-08 | 巩义市相济装配构件有限公司 | A kind of polyaluminium chloride water purification agent waste residue regrown material is non-burning brick and preparation method thereof |
-
2020
- 2020-09-07 CN CN202010929177.5A patent/CN111978050B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0086856A1 (en) * | 1982-02-19 | 1983-08-31 | NABISCO BRANDS, Inc. | Center-filled chewing gums, a sugarless liquid fill for same and a process for preparing them |
| JPS63258539A (en) * | 1986-09-08 | 1988-10-26 | ワ−ナ−−ランバ−ト・コンパニ− | Low moisture sugarless center filled chewing gum |
| US20060280835A1 (en) * | 2004-08-25 | 2006-12-14 | Cadbury Adams Usa Llc. | Multi-modality flavored chewing gum compositions |
| KR20060062910A (en) * | 2004-12-06 | 2006-06-12 | (주)성진화학 | Water treating composition using the aluminium dross |
| CN101492271A (en) * | 2008-12-10 | 2009-07-29 | 乔占印 | Method for producing construction brick with industrial residue |
| CN101492268A (en) * | 2009-03-11 | 2009-07-29 | 朱炳喜 | Concrete mending mortar additive and formulating method for mending mortar |
| WO2011002780A1 (en) * | 2009-07-02 | 2011-01-06 | Pneumatic Processing Technologies, Llc | Carbon heat-treatment process |
| CN101792165A (en) * | 2010-03-16 | 2010-08-04 | 贵州明威环保技术有限公司 | Method for producing polymeric aluminum chloride from kaolin |
| CN102627432A (en) * | 2012-04-26 | 2012-08-08 | 昆明滇宝防水建材有限公司 | Modified polymer cement waterproof mortar |
| CN102674422A (en) * | 2012-05-22 | 2012-09-19 | 李松 | Method for preparing flocculant liquid polyaluminum chloride from aluminum ash |
| CN106866067A (en) * | 2017-01-20 | 2017-06-20 | 河南理工大学 | The production line and production method of a kind of underground filling material for blending germanium waste residue |
| WO2018144068A1 (en) * | 2017-02-03 | 2018-08-09 | Saudi Arabian Oil Comapny | Compositions and methods of use of water-based drilling fluids with increased thermal stability |
| CN107935502A (en) * | 2017-11-27 | 2018-04-20 | 南通大学 | Useless prepare polyaluminium chloride residue using double non-burning brick method is prepared as major ingredient |
| CN109437697A (en) * | 2018-12-17 | 2019-03-08 | 巩义市相济装配构件有限公司 | A kind of polyaluminium chloride water purification agent waste residue regrown material is non-burning brick and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 何青峰: "除氯处理的 PAC 废渣的细度和掺量对水泥性能影响的研究", 《无机盐工业》 * |
| 李娜: "聚合氯化铝生产废渣的处理与利用", 《化工学报》 * |
| 陈伟等: ""聚合铝改性再生胶凝材料力学性质与微结构"", 《硅酸盐通报》 * |
| 黄欣: ""利用副产盐酸生产无机氯产品实现资源综合利用"", 《聚氯乙烯》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115448674A (en) * | 2022-10-26 | 2022-12-09 | 河南郑大建筑材料有限公司 | Green ultrahigh-performance concrete and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111978050B (en) | 2022-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108569859B (en) | Waterproof and impervious concrete additive with self-repairing function and preparation method thereof | |
| CN101423355A (en) | Sulphoaluminates expansion agent prepared by industrial residue used in cement or concrete | |
| CN107244819A (en) | A kind of heat-stewed steel slag from converter powder activator and its preparation method and application | |
| CN113603440B (en) | Non-fired water permeable brick based on granite waste and coal slag and preparation method thereof | |
| CN113548841B (en) | Composite geopolymer mortar grouting material for reinforcing pavement base and preparation method thereof | |
| CN111847921B (en) | Low clinker cement and preparation method and application thereof | |
| CN112110661A (en) | Preparation method of phosphogypsum slag-based cement | |
| CN114315184A (en) | Ultra-fine admixture for solid waste based composite lithium slag and preparation method and application thereof | |
| CN113045228A (en) | Steel slag-based alkali-activated cementing material, preparation method and application thereof | |
| CN110317034B (en) | Semi-hydrated phosphogypsum-based filling material and preparation method and application thereof | |
| CN111978050B (en) | Polyaluminium chloride waste residue dry-mixed mortar and preparation method thereof | |
| CN101412595A (en) | Method for preparing concrete admixture from kaoline tailing | |
| CN114605121A (en) | Tungsten tailing autoclaved aerated concrete and preparation method thereof | |
| CN112174553A (en) | Composite activated low-calcium fly ash cement and preparation method thereof | |
| CN112225516A (en) | High-speed rail marine Portland cement and preparation method and application thereof | |
| CN110698122A (en) | Ecological light filler and preparation method thereof | |
| CN109020397A (en) | A kind of phase-change energy-storage mortar and preparation method thereof | |
| NL2032164B1 (en) | A Polyaluminum Chloride Waste Residue Dry Mixed Mortar And Preparation Method Therefor | |
| CN112159180B (en) | Polyaluminium chloride waste residue recycled concrete curb and preparation method thereof | |
| CN116462439B (en) | Carbide slag-based low-shrinkage excitant and preparation method and application thereof | |
| CN111423138B (en) | Method for preparing curing agent by using gas making slag-slag as raw material | |
| CN116462440B (en) | Low-shrinkage industrial solid waste excitant and preparation method and application thereof | |
| CN114180916B (en) | Light high-strength anti-cracking self-repairing tuff concrete and preparation method thereof | |
| LU102536B1 (en) | A recycled concrete with polyaluminium chloride waste residue and preparation method thereof | |
| CN112429985B (en) | Moderate heat portland cement prepared by utilizing industrial waste residues and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |