CN109553316A - It is a kind of using carbide slag and flyash as the complex cement of mixing material - Google Patents
It is a kind of using carbide slag and flyash as the complex cement of mixing material Download PDFInfo
- Publication number
- CN109553316A CN109553316A CN201811505320.7A CN201811505320A CN109553316A CN 109553316 A CN109553316 A CN 109553316A CN 201811505320 A CN201811505320 A CN 201811505320A CN 109553316 A CN109553316 A CN 109553316A
- Authority
- CN
- China
- Prior art keywords
- flyash
- carbide slag
- slag
- complex cement
- cement
- 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.)
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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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- 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
- C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
- C04B7/19—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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
-
- 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)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of using carbide slag and flyash as the complex cement of mixing material, and raw material is according to weight percent are as follows: dry carbide slag 5~10%, flyash 20%, slag 10%, Portland clinker 55~60%, gypsum 5%, the sum of above-mentioned weight percentage of each component are 100%.The present invention first by carbide slag drying it is broken after, then by formula weigh dry carbide slag, flyash, Portland clinker, slag, gypsum, sequentially adding grinding machine intergrinding can be prepared by complex cement.The present invention prepares complex cement using carbide slag and flyash as mixing material, turns waste into wealth, not only reduces environmental pollution, and product preparation process is simple, lower production costs, complex cement early strength obtained is higher, has preferable social benefit and economic benefit.
Description
Technical field
The present invention relates to the comprehensive utilizations of solid waste in ecological environment material nd field, are more particularly to a kind of using electric
Rock ballast and complex cement of the flyash as mixing material.
Background technique
Cement is plus water mix is at plasticity slurry, and the materials such as energy agglutination sand, stone can harden in air and in water
The powdered hydraulic cementing materials of middle hardening.There are many type of cement, are divided into general-purpose cement, cement special and special cement three
Major class, wherein complex cement is exactly one of kind of general-purpose cement.Cement plus water has preferable plasticity, cement after mixing and stirring
It can get higher intensity after hardening, and the durability of cement is preferable.Therefore, cement is not only widely used in industry and builds with civilian
It builds, is also widely used for the engineerings such as traffic, urban construction, agricultural, water conservancy and ocean, and novel cement-base composite material is also answered
For the construction of nuclear industry, aerospace industry and other infant industries, to guarantee that going on smoothly for nation-building plan plays very
Important role, be widely used prospect.
The primary raw material of manufacture of cement has lime stone, clay and iron powder, due to the continuous expansion of manufacture of cement scale, these
The resource in natural material mine is continuously developed utilization and gradually decreases, it is felt to be desirable to have new raw material resources to be substituted.
Carbide slag is the industrial residue being discharged in the chemical plant production production processes such as acetylene and polyvinyl chloride, main component
For Ca (OH)2, there are three aspects for the main utilization ways of carbide slag at present: first is for producing construction material, and second is raw
Chemical products are produced, third is for environmental improvement.In recent years, someone make using carbide slag raw material by high-temperature calcination preparation
The research of cement, but production technology is complicated, and fuel consumption is higher with heat consumption, and discharge amount of exhaust gas is larger, increases production cost.
Flyash refer to after levigate coal dust burns in the boiler in coal-burning power plant from flue discharge, the object collected by dust-precipitator
Matter is one of maximum coal-fired byproduct of the current discharge amount in China, specific surface area 2500-7000cm2/ g, main component are
SiO2, Al2O3And Fe2O3, it is a kind of typically with the pozzolanic materials of potential activity, and flyash is as cement, coagulation
The engineering fields such as production and building, water conservancy and ocean of the native admixture for cement, fired brick and other New Building Materials
It is the main path of domestic and international utilization of fly ash at present, not yet discovery is prepared using carbide slag and flyash as mixing material so far
The report of complex cement.
Summary of the invention
The object of the present invention is to provide a kind of using carbide slag and flyash as the complex cement of mixing material, it is using electricity
Rock ballast prepares complex cement as mixing material with flyash, and not only product preparation process is simple, lower production costs, obtained multiple
Cement early strength is higher, and is advantageously implemented environmental protection and the dual purpose to turn waste into wealth.
Of the invention is a kind of using carbide slag and flyash as the complex cement of mixing material, and raw material is according to weight percent
Than are as follows: dry carbide slag 5~10%, flyash 20%, slag 10%, Portland clinker 55~60%, gypsum 5%, above-mentioned each component
The sum of weight percent is 100%.
The specific steps for preparing complex cement include:
1) it is crushed after drying carbide slag；
2) dry carbide slag, flyash, Portland clinker, slag, gypsum are weighed by above-mentioned formula, it is common sequentially adds grinding machine
Grinding can be prepared by complex cement.
The carbide slag selects the carbide slag in chemical plant, moisture < 40wt%, and the flyash selects the powder of concrete company
Coal ash, the Portland clinker, slag and gypsum select Portland clinker, slag and the stone in cement plant respectively
Cream, grain diameter < 25mm, wherein slag moisture < 1.5wt%.
Carbide slag is dried using drying equipment in the step 1), moisture < 1wt% after drying, and broken rear grain diameter <
25mm。
Complex cement fineness obtained is that 80 μm of square hole screens tail over < 10% after grinding in the step 2.
Remarkable advantage of the invention is: for prior art, the present invention makes full use of carbide slag rich in Ca (OH)2,
Fly ash grain is thinner, has the characteristics that potential pozzolanic activity, and it is higher compound to prepare low production cost, early strength
Cement, the Ca (OH) after suitable carbide slag and flyash are mixed again, in carbide slag2The pozzolanic activity of flyash can be excited,
To accelerate the speed of complex cement hydration reaction, the amount of hydrolysis product of cement is set to increase sharply, therefore can be improved and singly mix fine coal
The early strength of ash concrete shortens its setting time, and " carbide slag is made raw material to prepare by high-temperature calcination with prior art
Cement " compares, and carbide slag need to only be dried broken rear and flyash, Portland clinker, slag, gypsum by the invention patent
Intergrinding can be prepared by the complex cement haveing excellent performance by a certain percentage, and simple production process can reduce fuel consumption and heat
Consumption about 7 ~ 14%, reduces the discharge of exhaust gas, not only greatly reduces production cost, improve the market competitiveness, and be conducive to
The dual purpose realizing environmental protection and turning waste into wealth.It is as follows by complex cement performance made from the method for the present invention: 3d resistance to compression
Intensity 17.6MPa, 3d flexural strength 3.7MPa, 28d compression strength 37.2MPa, 28d flexural strength 6.0MPa, presetting period
110min, final setting time 348min, stability are qualified.
Specific implementation method
Summary of the invention according to the invention implements the present invention.
The composition of raw materials of complex cement of the present invention is according to weight percent are as follows: dry carbide slag 5~10%, flyash 20%, mine
Slag 10%, Portland clinker 55~60%, gypsum 5%, the sum of above-mentioned weight percentage of each component are 100%.Wherein, carbide slag
The carbide slag in chemical plant, moisture < 40wt% are selected, flyash selects the flyash of concrete company, Portland clinker, mine
Slag and gypsum select Portland clinker, slag and the gypsum in cement plant respectively, grain diameter < 25mm, chats
Pulp water point < 1.5wt%.
The step of preparation process are as follows:
1) by carbide slag using being crushed after drying equipment drying, moisture < 1wt% after drying is crushed rear grain diameter < 25mm.
2) dry carbide slag, flyash, Portland clinker, slag, gypsum are weighed by above-mentioned formula, sequentially adds grinding machine
Intergrinding to cement fineness is that 80 μm of square hole screens tail over < 10%, can be prepared by complex cement.
The following is specific embodiments of the present invention, further illustrates the present invention, but the present invention is not limited only to this.
Embodiment 1
Complex cement is prepared using carbide slag and flyash as mixing material, composition of raw materials is according to weight percent are as follows: dry electricity
Rock ballast 5%, flyash 20%, slag 10%, Portland clinker 60%, gypsum 5%.
Preparation step:
1) by carbide slag using being crushed after drying equipment drying, moisture < 1wt% after drying is crushed rear grain diameter < 25mm.
2) dry carbide slag, flyash, Portland clinker, slag, gypsum are weighed by above-mentioned formula, sequentially adds grinding machine
Intergrinding to cement fineness is that 80 μm of square hole screens tail over < 10%, can be prepared by complex cement.
3) by standard GB/T/T17671-1999 measurement complex cement product sample difference hydration age compression strength
With flexural strength, setting time and stability by standard GB/T 1346-2001 measurement complex cement product sample, measurement knot
Fruit is as follows: 3d compression strength 17.6MPa, 3d flexural strength 3.7MPa, 28d compression strength 37.2MPa, 28d flexural strength
6.0MPa, presetting period 110min, final setting time 348min, stability are qualified.
Embodiment 2
Complex cement is prepared using carbide slag and flyash as mixing material, composition of raw materials is according to weight percent are as follows: dry electricity
Rock ballast 10%, flyash 20%, slag 10%, Portland clinker 55%, gypsum 5%.
Preparation step:
1) by carbide slag using being crushed after drying equipment drying, moisture < 1wt% after drying is crushed rear grain diameter < 25mm.
2) dry carbide slag, flyash, Portland clinker, slag, gypsum are weighed by above-mentioned formula, sequentially adds grinding machine
Intergrinding to cement fineness is that 80 μm of square hole screens tail over < 10%, can be prepared by complex cement.
3) by standard GB/T/T17671-1999 measurement complex cement product sample difference hydration age compression strength
With flexural strength, setting time and stability by standard GB/T 1346-2001 measurement complex cement product sample, measurement knot
Fruit is as follows: 3d compression strength 16.1MPa, 3d flexural strength 3.5MPa, 28d compression strength 34.1MPa, 28d flexural strength
5.7MPa, presetting period 92min, final setting time 315min, stability are qualified.
Comparative example 1
The composition of raw materials-of complex cement sample (being not incorporated into carbide slag) is compared according to weight percent are as follows: flyash 20%, slag
10%, Portland clinker 65%, gypsum 5%.
Preparation step:
1) flyash, Portland clinker, slag, gypsum are weighed by above-mentioned formula, sequentially adds grinding machine intergrinding to water
Mud fineness is that 80 μm of square hole screens tail over < 10%, can be prepared by complex cement.
2) by standard GB/T/T17671-1999 measurement complex cement product sample difference hydration age compression strength
With flexural strength, setting time and stability by standard GB/T 1346-2001 measurement complex cement product sample, measurement knot
Fruit is as follows: 3d compression strength 15.7MPa, 3d flexural strength 3.4MPa, 28d compression strength 36.1MPa, 28d flexural strength
5.8MPa, presetting period 120min, final setting time 363min, stability are qualified.
Comparative example 2
Complex cement is prepared using carbide slag and flyash as mixing material, composition of raw materials is according to weight percent are as follows: dry electricity
Rock ballast 15%, flyash 20%, slag 10%, Portland clinker 50%, gypsum 5%.
Preparation step:
1) by carbide slag using being crushed after drying equipment drying, moisture < 1wt% after drying is crushed rear grain diameter < 25mm.
2) dry carbide slag, flyash, Portland clinker, slag, gypsum are weighed by above-mentioned formula, sequentially adds grinding machine
Intergrinding to cement fineness is that 80 μm of square hole screens tail over < 10%, can be prepared by complex cement.
3) by standard GB/T/T17671-1999 measurement complex cement product sample difference hydration age compression strength
With flexural strength, setting time and stability by standard GB/T 1346-2001 measurement complex cement product sample, measurement knot
Fruit is as follows: 3d compression strength 15.1MPa, 3d flexural strength 3.3MPa, 28d compression strength 32.1MPa, 28d flexural strength
5.4MPa, presetting period 72min, final setting time 278min, stability are qualified.
The foregoing is merely better embodiment of the invention, all equivalent changes done according to scope of the present invention patent
With modification, it is all covered by the present invention.
Claims (4)
1. a kind of using carbide slag and flyash as the complex cement of mixing material, it is characterised in that: the original of the complex cement
Material is according to weight percent are as follows: dry carbide slag 5~10%, flyash 20%, slag 10%, Portland clinker 55~60%, stone
Cream 5%, the sum of above-mentioned weight percentage of each component are 100%；
The preparation method of the complex cement includes the following steps:
1) it is crushed after drying carbide slag；
2) dry carbide slag, flyash, Portland clinker, slag, gypsum are weighed by above-mentioned formula, it is common sequentially adds grinding machine
Complex cement is made in grinding.
2. according to claim 1 a kind of using carbide slag and flyash as the complex cement of mixing material, feature exists
In: the carbide slag selects the carbide slag in chemical plant, moisture < 40wt%, and the flyash selects the flyash of concrete company,
The Portland clinker, slag and gypsum select Portland clinker, slag and the gypsum in cement plant respectively,
Grain partial size < 25mm, wherein slag moisture < 1.5wt%.
3. according to claim 1 a kind of using carbide slag and flyash as the complex cement of mixing material, feature exists
In: carbide slag is dried using drying equipment in the step 1), moisture < 1wt% after drying, grain diameter < 25mm after being crushed.
4. according to claim 1 a kind of using carbide slag and flyash as the complex cement of mixing material, feature exists
In: complex cement fineness obtained is that 80 μm of square hole screens tail over < 10% after grinding in the step 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505320.7A CN109553316A (en) | 2018-12-10 | 2018-12-10 | It is a kind of using carbide slag and flyash as the complex cement of mixing material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505320.7A CN109553316A (en) | 2018-12-10 | 2018-12-10 | It is a kind of using carbide slag and flyash as the complex cement of mixing material |
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| CN109553316A true CN109553316A (en) | 2019-04-02 |
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| CN201811505320.7A Pending CN109553316A (en) | 2018-12-10 | 2018-12-10 | It is a kind of using carbide slag and flyash as the complex cement of mixing material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517684A (en) * | 2020-05-19 | 2020-08-11 | 张红卫 | Composite cement using carbide slag and fly ash as mixed material |
| CN115925290A (en) * | 2022-07-28 | 2023-04-07 | 华润水泥技术研发有限公司 | Grinding prepared cement and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517684A (en) * | 2020-05-19 | 2020-08-11 | 张红卫 | Composite cement using carbide slag and fly ash as mixed material |
| CN115925290A (en) * | 2022-07-28 | 2023-04-07 | 华润水泥技术研发有限公司 | Grinding prepared cement and preparation method thereof |
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Application publication date: 20190402 |