CN110981234A - Cementing material and preparation method thereof - Google Patents
Cementing material and preparation method thereof Download PDFInfo
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- CN110981234A CN110981234A CN201911259898.3A CN201911259898A CN110981234A CN 110981234 A CN110981234 A CN 110981234A CN 201911259898 A CN201911259898 A CN 201911259898A CN 110981234 A CN110981234 A CN 110981234A
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- stone
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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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/1535—Mixtures thereof with other inorganic cementitious materials or other activators with alkali metal containing activators, e.g. sodium hydroxide or waterglass
-
- 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
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a cementing material and a method for preparing the cementing material and a building material by using stone waste slurry, wherein the cementing material comprises the following raw material components in parts by weight: 40-60 parts of slag, 10-30 parts of marble powder, 10-30 parts of granite powder and 3-8 parts of alkali activator. According to the invention, the waste stone slurry is used for preparing the cementing material, so that not only can marble powder and granite powder be effectively utilized, but also the problems of discharge and pollution of the waste stone slurry in the stone processing industry can be solved, waste materials can be changed into valuable, and meanwhile, slag can be recycled, so that the load of negative accumulation on the environment can be reduced.
Description
Technical Field
The invention belongs to the field of solid waste resource utilization, and particularly relates to a cementing material and a method for preparing the cementing material by using waste stone slurry.
Background
In recent years, the global stone yield has been kept on the increasing trend. According to the statistics of relevant data, the global stone yield in 2014 is 1.365 hundred million tons, and the annual yield growth rate of Chinese stones is kept about 10-15%. The rapid development of the annual output of stone materials is accompanied by a plurality of problems, such as mountain destruction, environmental pollution, waste pollution and the like, and particularly the problem of pollution caused by stone processing waste materials is more prominent. The global stone processing industry generates about 2733 ten thousand tons of stone waste every year, and the stone powder waste generated in China is about 859 thousand tons, which accounts for 31.4 percent of the global total amount. It is composed ofIn the method, the waste slurry accounts for 20-30% of the weight of the stone processing waste, the water content of the waste slurry is about 50%, and the rest is stone powder. According to the data, the average mining utilization rate of natural stones in China is only about 35%, and each production is 30m2Stone, about 1t of stone waste is generated, including leftover materials, waste stone powder, waste slurry and the like.
With the increasing scale of the stone processing industry, the development of the stone industry brings great contribution to the local economic society and a series of environmental pollution problems such as waste residues, waste slurry and the like. When the stone waste slurry is disposed in a refuse landfill, the floating dust caused by the evaporation of the water content of the stone waste slurry can not only cause the unbalance of a local ecological system, but also harm the health of human bodies. Only the stone waste is effectively utilized, the pollution problem of the stone waste is fundamentally solved, and the treatment of both symptoms and root causes can be realized.
The utilization mode of the waste stone slurry in China is mainly to obtain stone powder after drying the waste stone slurry, and the stone powder is mainly used for artificial stone, floor tiles and cement production, or used as concrete admixture, desulfurizer, self-compacting concrete and the like, so that the utilization of the waste stone slurry is promoted to a certain extent, but the problems of low utilization rate and difficult yield production exist. In order to realize sustainable development and cater to the green economy pursued by the society at present, and in order to improve the ecological environment, the cement consumption of the civil engineering industry must be reduced rapidly, and the stone waste materials are recycled more and more.
Disclosure of Invention
The invention aims to provide a cementing material and a method for preparing the cementing material and a building material by using waste stone slurry, which can recycle stone waste, reduce the landfill accumulation of the stone waste, change waste into valuable and fundamentally solve the pollution problem of the stone waste. Meanwhile, a large amount of industrial waste residues can be used, so that the waste utilization is realized, the occupied area is reduced, and the environmental pollution is avoided.
The invention is realized by the following technical scheme:
the cementing material comprises, by mass, 40-60 parts of slag, 10-30 parts of marble powder, 10-30 parts of granite powder and 3-8 parts of an alkali activator.
Preferably, the slag is granulated blast furnace slag micro powder, and the specific surface area of the slag is 450-550 m2/kg。
Preferably, the marble powder and the granite powder are prepared by drying waste slurry obtained from a settling pond of a stone processing plant at high temperature.
Preferably, the marble powder has a particle size distribution of: 50-60 wt% of particles with the particle size of less than 10 μm, 80-90 wt% of particles with the particle size of less than 30 μm and 92-98 wt% of particles with the particle size of less than 60 μm; the particle size distribution of the granite powder is as follows: 35 to 50 weight percent of particles with the particle size of less than 10 mu m, 70 to 85 weight percent of particles with the particle size of less than 30 mu m and 90 to 95 weight percent of particles with the particle size of less than 60 mu m.
Preferably, the alkali activator is water glass (Na)2O·nSiO2) And NaOH, wherein the modulus n of the water glass is 1.0-3.0.
The method for preparing the cementing material by using the waste stone slurry comprises the following steps:
(1) weighing the following materials: the material comprises, by mass, 40-60 parts of slag, 10-30 parts of marble powder, 10-30 parts of granite powder and 3-8 parts of an alkali activator;
(2) and mixing and stirring the slag, the marble powder and the granite powder uniformly, and adding an alkali activator to prepare the cementing material.
Also provided is a method for preparing a building material using the waste stone slurry, comprising the steps of:
s1: extracting concentrated stone waste slurry from a settling pond of a stone processing plant;
s2: placing the waste stone slurry in a dryer at 105-110 ℃ for continuous drying for 1.5-2.5 h;
s3: crushing the dried blocks for 4-10 min by using a ball mill to obtain marble powder and granite powder;
s4: putting 40-60 parts of slag, 10-30 parts of marble powder, 10-30 parts of granite powder and 3-8 parts of alkali activator into a mixer, and uniformly mixing and stirring;
s5: and mixing and stirring the mixture and water according to a water-solid ratio of 0.38-0.5 to obtain the building material.
Preferably, in the step S4, the mixer is a V-shaped mixer with the model of EU55-V-5, the rotating speed is 10-30 r/min, and the mixing time is 20-40 min.
Preferably, the method further comprises a step S6 of curing the building material obtained in the step S5 at normal temperature.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the slag, the granite powder, the marble powder and the alkali activator are jointly used for preparing the cementing material for the first time, and the optimal proportion is optimized to improve the synergistic effect of the four solid raw materials, compared with a cement environment, an alkali excitation and alkaline environment of a slag system, a part of silicon dioxide in the granite powder is easier to be excited to dissolve out to form silicate, the combination of the silicate and calcium in the marble powder is promoted, the utilization rate of the granite powder and marble powder resources in the cementing material is improved, and the strength of the cementing material can also be improved;
(2) the marble powder and the granite powder are specially treated, and the appropriate mass proportion is optimized corresponding to different particle size distributions, so that the marble powder and the granite powder can play the roles in the cementing material;
(3) the invention provides a method for preparing a gelled material by using waste stone slurry, which is characterized in that the gelled material is prepared by using the waste stone slurry, mineral powder and alkali for excitation, so that not only can marble powder and granite powder be effectively utilized and waste be turned into wealth, but also slag can be recycled, and the load of negative accumulation on the environment is reduced. Through the implementation mode, the resource utilization rate is improved, the living environment is effectively improved, the purpose of green development is achieved, and the practical value is high.
Detailed Description
Example 1
A method for preparing building materials by using stone waste slurry comprises the following steps:
s1: extracting concentrated stone waste slurry from a settling pond of a stone processing plant;
s2: placing the waste stone slurry in a dryer at 110 ℃ for continuous drying for 2 h;
s3: crushing the dried blocks by using an SM-500 type ball mill for 5min to obtain marble powder and granite powder;
s4: putting 60 parts of slag, 17.5 parts of marble powder, 17.5 parts of granite powder and 5 parts of alkali activator into a mixer, and uniformly mixing and stirring;
s5: mixing according to the water-solid ratio of 0.5, mixing by using a JJ-5 type cement paste mixer, then adopting a six-joint all-steel test mould with the thickness of 40mm multiplied by 40mm to form, and placing in a standard curing box for curing to obtain the final building material.
Example 2
A method for preparing building materials by using stone waste slurry comprises the following steps:
s1: extracting concentrated stone waste slurry from a settling pond of a stone processing plant;
s2: placing the waste stone slurry in a dryer at 110 ℃ for continuous drying for 2 h;
s3: crushing the dried blocks by using an SM-500 type ball mill for 5min to obtain marble powder and granite powder;
s4: putting 60 parts of slag, 17.5 parts of marble powder, 17.5 parts of granite powder and 5 parts of alkali activator into a mixer, and uniformly mixing and stirring;
s5: mixing according to a water-solid ratio of 0.45, mixing by a JJ-5 type cement paste mixer, then adopting a six-joint all-steel test mold with the size of 40mm multiplied by 40mm to form, and placing in a standard curing box for curing to obtain the final building material.
Example 3
A method for preparing building materials by using stone waste slurry comprises the following steps:
s1: extracting concentrated stone waste slurry from a settling pond of a stone processing plant;
s2: placing the waste stone slurry in a dryer at 110 ℃ for continuous drying for 2 h;
s3: crushing the dried blocks by using an SM-500 type ball mill for 5min to obtain marble powder and granite powder;
s4: putting 60 parts of slag, 17.5 parts of marble powder, 17.5 parts of granite powder and 5 parts of alkali activator into a mixer, and uniformly mixing and stirring;
s5: mixing according to the water-solid ratio of 0.38, mixing by a JJ-5 type cement paste mixer, then adopting a six-joint all-steel test mold with the size of 40mm multiplied by 40mm to form, and placing in a standard curing box for curing to obtain the final building material.
Example 4
A method for preparing building materials by using stone waste slurry comprises the following steps:
s1: extracting concentrated stone waste slurry from a settling pond of a stone processing plant;
s2: placing the waste stone slurry in a dryer at 110 ℃ for continuous drying for 2 h;
s3: crushing the dried blocks by using an SM-500 type ball mill for 5min to obtain marble powder and granite powder;
s4: 50 parts of slag, 22.5 parts of marble powder, 22.5 parts of granite powder and 5 parts of alkali activator are put into a mixer to be mixed and stirred uniformly;
s5: mixing according to the water-solid ratio of 0.38, mixing by a JJ-5 type cement paste mixer, then adopting a six-joint all-steel test mold with the size of 40mm multiplied by 40mm to form, and placing in a standard curing box for curing to obtain the final building material.
Example 5
A method for preparing building materials by using stone waste slurry comprises the following steps:
s1: extracting concentrated stone waste slurry from a settling pond of a stone processing plant;
s2: placing the waste stone slurry in a dryer at 110 ℃ for continuous drying for 2 h;
s3: crushing the dried blocks by using an SM-500 type ball mill for 5min to obtain marble powder and granite powder;
s4: putting 40 parts of slag, 22.5 parts of marble powder, 22.5 parts of granite powder and 5 parts of alkali activator into a mixer, and uniformly mixing and stirring;
s5: mixing according to the water-solid ratio of 0.38, mixing by a JJ-5 type cement paste mixer, then adopting a six-joint all-steel test mold with the size of 40mm multiplied by 40mm to form, and placing in a standard curing box for curing to obtain the final building material.
Examples 1 to 5 the starting materials are illustrated below:
the specific surface area of the slag was 500m2Per kg; the particle size distribution of marble powder is as follows: 54.2 wt% of particles having a particle size of less than 10 μm, 84.7 wt% of particles having a particle size of less than 30 μm, and 93.6 wt% of particles having a particle size of less than 60 μm; the particle size distribution of the granite powder is as follows: 42.8 wt% of particles having a particle size of less than 10 μm, 80.6 wt% of particles having a particle size of less than 30 μm, and 91.2 wt% of particles having a particle size of less than 60 μm; the alkali activator is a mixed solution of water glass and NaOH, and the modulus n of the water glass is 1.5.
And (3) testing: the samples provided in examples 1 to 5 were tested for their extension degree by reference to GB/T8077-.
TABLE 1 Properties of the cementitious Material of the examples
As can be seen from Table 1, when the raw material mixture ratio of the embodiment 1 of the invention is adopted, the slurry extensibility is increased along with the increase of the water-gel ratio, the 7d and 28d strength is reduced along with the increase of the water-gel ratio, the 28d strength is both more than 25MPa, and the maximum compressive strength is 37.6 MPa. When the water-glue ratio is kept to be 0.38, the raw material proportion is changed, and the compression resistance of the hardened slurry is reduced in a small range along with the increase of the mixing amount of the stone powder.
According to the invention, the waste stone slurry is used for preparing the cementing material, so that not only can marble powder and granite powder be effectively utilized, but also the problems of discharge and pollution of the waste stone slurry in the stone processing industry can be solved, waste materials can be changed into valuable, and meanwhile, slag can be recycled, so that the load of negative accumulation on the environment can be reduced. Through the implementation mode, the resource utilization rate is improved, the living environment is effectively improved, the purpose of green development is achieved, and the practical value is high.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The cementing material is characterized by comprising, by mass, 40-60 parts of slag, 10-30 parts of marble powder, 10-30 parts of granite powder and 3-8 parts of an alkali activator.
2. A cementitious material as defined in claim 1, wherein: the slag is granulated blast furnace slag micro powder, and the specific surface area of the slag is 400-650 m2/kg。
3. A cementitious material as defined in claim 1, wherein: the marble powder and the granite powder are prepared by drying waste slurry obtained from a settling pond of a stone processing plant at high temperature.
4. A cementitious material as claimed in claims 1 to 3, characterised in that: the particle size distribution of the marble powder is as follows: 50-60 wt% of particles with the particle size of less than 10 μm, 80-90 wt% of particles with the particle size of less than 30 μm and 92-98 wt% of particles with the particle size of less than 60 μm; the particle size distribution of the granite powder is as follows: 35 to 50 weight percent of particles with the particle size of less than 10 mu m, 70 to 85 weight percent of particles with the particle size of less than 30 mu m and 90 to 95 weight percent of particles with the particle size of less than 60 mu m.
5. A cementitious material as defined in claim 1, wherein: the alkali activator is water glass (Na)2O·nSiO2) Andthe modulus n of the water glass in the mixed solution of NaOH is 1.0-3.0.
6. A method for preparing a cementing material by using stone waste slurry is characterized by comprising the following steps:
(1) weighing the following materials: the material comprises, by mass, 40-60 parts of slag, 10-30 parts of marble powder, 10-30 parts of granite powder and 3-8 parts of an alkali activator;
(2) and mixing and stirring the slag, the marble powder and the granite powder uniformly, and adding an alkali activator to prepare the cementing material.
7. A method for preparing building materials by using stone waste slurry is characterized by comprising the following steps: the method comprises the following steps:
s1: extracting concentrated stone waste slurry from a settling pond of a stone processing plant;
s2: placing the waste stone slurry in a dryer at 105-110 ℃ for continuous drying for 1.5-2.5 h;
s3: crushing the dried blocks for 4-10 min by using a ball mill to obtain marble powder and granite powder;
s4: putting 40-60 parts of slag, 10-30 parts of marble powder, 10-30 parts of granite powder and 3-8 parts of alkali activator into a mixer, and uniformly mixing and stirring;
s5: and mixing and stirring the mixture and water according to a water-solid ratio of 0.38-0.5 to obtain the building material.
8. The method for preparing a building material using the waste slurry of stone material as set forth in claim 7, wherein: in the step S4, the mixer is a V-shaped mixer with the model of EU55-V-5, the rotating speed is 10-30 r/min, and the mixing time is 20-40 min.
9. The method for preparing a building material using the waste slurry of stone material as set forth in claim 7, wherein: further comprises a step S6 of curing the building material obtained in the step S5 at normal temperature.
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Cited By (7)
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| CN111592287A (en) * | 2020-05-21 | 2020-08-28 | 南昌航空大学 | Preparation method of calcium carbonate type waste residue geopolymer |
| CN113816717A (en) * | 2021-09-26 | 2021-12-21 | 中国地质大学（北京） | Mineral composite impermeable material, use method and impermeable fiber bag prepared from mineral composite impermeable material |
| CN115304295A (en) * | 2022-07-15 | 2022-11-08 | 桂林理工大学 | High-doped waste marble powder-slag-based alkali-activated cementing material and preparation method thereof |
| CN115572146A (en) * | 2022-09-28 | 2023-01-06 | 山东高速路桥国际工程有限公司 | Alkali-activated granite powder cementing material and preparation method thereof |
| CN115779850A (en) * | 2022-11-01 | 2023-03-14 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Silica-based stone powder material, preparation method and application |
| CN116081972A (en) * | 2023-02-24 | 2023-05-09 | 桂林理工大学 | Preparation method of superfine micro-nano scale active admixture and linked grouting material |
| CN116102270A (en) * | 2022-11-22 | 2023-05-12 | 日昌升建筑新材料设计研究院有限公司 | Preparation method of novel cementing material produced by utilizing granite mine solid waste |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111592287A (en) * | 2020-05-21 | 2020-08-28 | 南昌航空大学 | Preparation method of calcium carbonate type waste residue geopolymer |
| CN111592287B (en) * | 2020-05-21 | 2022-04-15 | 南昌航空大学 | Preparation method of calcium carbonate type waste residue geopolymer |
| CN113816717A (en) * | 2021-09-26 | 2021-12-21 | 中国地质大学（北京） | Mineral composite impermeable material, use method and impermeable fiber bag prepared from mineral composite impermeable material |
| CN113816717B (en) * | 2021-09-26 | 2022-06-24 | 中国地质大学（北京） | Mineral composite impermeable material, use method and impermeable fiber bag prepared from mineral composite impermeable material |
| CN115304295A (en) * | 2022-07-15 | 2022-11-08 | 桂林理工大学 | High-doped waste marble powder-slag-based alkali-activated cementing material and preparation method thereof |
| CN115304295B (en) * | 2022-07-15 | 2023-08-15 | 桂林理工大学 | High-doping waste marble powder-slag-based alkali-activated cementing material and preparation method thereof |
| CN115572146A (en) * | 2022-09-28 | 2023-01-06 | 山东高速路桥国际工程有限公司 | Alkali-activated granite powder cementing material and preparation method thereof |
| CN115572146B (en) * | 2022-09-28 | 2023-10-27 | 山东高速路桥国际工程有限公司 | Alkali-activated granite powder cementing material and preparation method thereof |
| CN115779850A (en) * | 2022-11-01 | 2023-03-14 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Silica-based stone powder material, preparation method and application |
| CN116102270A (en) * | 2022-11-22 | 2023-05-12 | 日昌升建筑新材料设计研究院有限公司 | Preparation method of novel cementing material produced by utilizing granite mine solid waste |
| CN116081972A (en) * | 2023-02-24 | 2023-05-09 | 桂林理工大学 | Preparation method of superfine micro-nano scale active admixture and linked grouting material |
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