CN106396437A - Method of using industrial solid slag to produce silicate cement for nuclear power engineering - Google Patents
Method of using industrial solid slag to produce silicate cement for nuclear power engineering Download PDFInfo
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- CN106396437A CN106396437A CN201610782725.XA CN201610782725A CN106396437A CN 106396437 A CN106396437 A CN 106396437A CN 201610782725 A CN201610782725 A CN 201610782725A CN 106396437 A CN106396437 A CN 106396437A
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- CN
- China
- Prior art keywords
- nuclear power
- power engineering
- silicate cement
- industrial solid
- raw materials
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- 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
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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
-
- 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
Abstract
The invention relates to a silicate cement production method, and specifically relates to a method of using industrial solid slag to produce silicate cement for nuclear power engineering. The silicate cement comprises the following raw materials in percentage by weight: 72.0 to 78.0% of limestone mining waste, 7.0 to 16.0% of silica mining waste, 1.0 to 5.5% of blast furnace granulated slag, and 8.0 to 12.0% of tailings of iron ore mining. The abovementioned raw materials are mixed and milled and then the powder is subjected to heat change in a pre-heater, a gas-solid separation treatment, carbonate decomposition in a decomposing furnace, calcining in a dry-process rotary kiln, and cooling so as to obtain silicate cement clinker. According to the method, limestone mining waste, silica mining waste, blast furnace granulated slag, and tailings of iron ore mining are taken as the raw materials to produce silicate cement that is qualified for nuclear power engineering, a large amount of natural raw materials is saved, the energy consumption is reduced, the cost is saved, and the ecological environment is protected.
Description
Technical field
The present invention relates to a kind of method producing portland cement is and in particular to a kind of industrial solid waste residue produces nuclear power work
The method of journey portland cement.
Background technology
Cement directly affects nuclear power work as the most frequently used large construction material of Nuclear power project, the quality of its quality
Cheng Jianshe and the safety run.Due to the particularity of nuclear power engineering, the requirement to all material is very strict；On 2 1st, 2016
Implement《Nuclear power engineering portland cement》The foundation of GB/T31545 2015 national standard and enforcement, no matter to China's core
Electricity production domesticization and safe, or China's special cement industry development is all very important.
Nuclear power engineering portland cement has that the heat of hydration is low, early intensity is high, sulphate-corrosion resistance can strong, alkali content
The characteristic such as low, drying shrinkage is little, is 42.5 grades of portland cements of collection（P·Ⅰ/P·Ⅱ）, 42.5 grades of moderate heat cements（P·MH）、42.5
High sulfate resisting cement (P MSR/ P HSR), 42.5 grades of road cements in level（P·R）Refer to etc. kind grade and low alkalization
The brand-new cement type that mark characteristic is integrated.
The rupture strength of P N 42.5 grades of nuclear powers cement 3d, 28d and compression strength are respectively greater than 3.5 MPas, 6.5 MPas
With 17 MPas, 42.5 MPas, meet 42.5 grades of P I/P II 42.5 class g cements requirement；The heat of hydration of 3d and 7d is respectively less
In 251 every kilogram of kilojoules and every kilogram of 293 kilojoules, meet the requirement of 42.5 grades of P MH cement；28d contract with dry rate is not more than
0.10%, the cement meeting 42.5 grades of P R requires；Alkali content is not more than 0.60%, meets the requirement of low alkali portland cement.
In the raw material limestone matter raw material of traditional mode of production cement, clayey raw material and ferro-controlling raw material, alkali content is high, no
Method produces the nuclear power engineering portland cement meeting market demands.
Content of the invention
The purpose of the present invention is to provide a kind of industrial solid waste residue to produce nuclear power engineering for prior art existing problems to use
The method of portland cement.
The concrete technical scheme of the present invention is as follows：
A kind of method that industrial solid waste residue produces nuclear power engineering portland cement, using raw material be by weight ratio：Lime
Stone debris 72.0～78.0%, silica debris 7.0～16.0%, blast furnace granulated slag 1.0～5.5%, iron ore mining mine tailing
8.0～12.0%；By sequentially passing through after above-mentioned raw materials combined grinding, preheater hot exchanges, gas solid separation is processed, dore furnace carbonate
Decompose, dry-process rotory kiln calcining, cooling after nuclear power engineering Portland clinker；
Described dore furnace middle portion temperature is 830～870 DEG C；
Described dry-process rotory kiln kiln tail smoke-box temperature is 900～1000 DEG C；
Iron is removed through magnetic separator before described blast furnace granulated slag combined grinding.
The each material chemical component of the present invention and content are as shown in table 1.
Table 1：Each material chemical component and content
The invention has the advantages that：
The present invention adopts lime stone debris, silica debris, blast furnace granulated slag and iron ore mining mine tailing effect silicate
The raw materials for production of cement, while producing nuclear power engineering portland cement up to standard, significantly save natural material, reduce
Energy consumption, cost-effective, protect ecological environment.
Lime stone debris CaO is relatively low but can meet production requirement, and its alkali content is less than 0.50%, make use of metallurgy
The discarded lime stone in Limestone mining engineering of enterprise, metallurgical solid waste of having dissolved；30～40% are contained in blast furnace granulated slag
CaO and SiO2, blast furnace granulated slag can not only instead of part lime stone matter in raw meal proportioning, clayey raw material, reduce ripe
Material production cost, and the carbonate of blast furnace granulated slag decomposes completely, and sinter leaching heat consumption significantly declines, and has saved fuel
Consume, in addition, blast furnace granulated slag alkali content volatilizees in a large number through high-temperature calcination, only the 1/4 of natural clay matter raw material；Silica is adopted
Ore deposit waste residue, as silico-regulating material, not only make use of the low feature of its alkali content, but also can be adjusted by adjusting its proportioning
The silica modulus of whole grog, to suppress preheater skinning and the ring formation of rotary kiln that may cause after the improvement of material burn-ability；Iron ore
Dig up mine mine tailing as melting waste slag, compared with natural material iron ore, containing certain thermal content（Refer to iron ore high-temperature and smelt work
Property improve）, during clinker burning, burn till heat consumption and decline.
The Portland clinker quality index being produced by the present invention is as follows：
Grog characteristic rate value：KH：0.880 ± 0.020, qualification rate 80.0%, N：2.5 ± 0.10, qualification rate 90.0%, P：0.80±
0.10, qualification rate 90.0%, 1 time/8h；
Unit weight：>=1250g/L, qualification rate >=90.0%, 1 time/8h；
Free calcium oxide（f-CaO）：≤ 0.60%, qualification rate >=85.0%, 1 time/8h;
Clinker mineral forms：C3S ：48.0～57.0%, C2S ：22.0～28.0%, C3A ：2.0～7.0%, C4AF ：14.0～
17.0%, 1 time/8h;
Magnesia（MgO）：No more than 2.5%, qualification rate 100%, 1 time/8h;
Sulfur trioxide（SO3）：No more than 0.80%, qualification rate 100%, 1 time/8h;
Loss on ignition（Loss）：No more than 0.85%, qualification rate 100%, 1 time/8h;
Alkali content（R2O）:No more than 0.50%, qualification rate 100%, 1 time/8h;
Clinker strength：Intensity is rolled in resistance to compression：3d is more than 5.5MPa, and 28d is more than 8.5 MPa, compression strength：3d is more than 22.0MPa,
28d is more than 50.0Mpa.
Specific embodiment
Embodiment 1
A kind of method that industrial solid waste residue produces nuclear power engineering portland cement, using raw material be by weight ratio：Lime
Stone debris 72.0%, silica debris 16.0%, blast furnace granulated slag 2.0%, iron ore mining mine tailing 10.0%；By above-mentioned raw materials
Sequentially pass through after combined grinding preheater hot exchange, gas solid separation process, dore furnace carbonate decomposition, dry-process rotory kiln calcining,
Portland clinker is obtained after cooling；Described dore furnace middle portion temperature is 830 DEG C, and described dry-process rotory kiln kiln tail smoke-box temperature is
900℃；Iron is removed through magnetic separator before described blast furnace granulated slag combined grinding.
Embodiment 2
A kind of method that industrial solid waste residue produces nuclear power engineering portland cement, using raw material be by weight ratio：Lime
Stone debris 75.0%, silica debris 12.0%, blast furnace granulated slag 1.0%, iron ore mining mine tailing 12.0%；By above-mentioned raw materials
Sequentially pass through after combined grinding preheater hot exchange, gas solid separation process, dore furnace carbonate decomposition, dry-process rotory kiln calcining,
Portland clinker is obtained after cooling；Described dore furnace middle portion temperature is 850 DEG C, and described dry-process rotory kiln kiln tail smoke-box temperature is
950℃；Iron is removed through magnetic separator before described blast furnace granulated slag combined grinding.
Embodiment 3
A kind of method that industrial solid waste residue produces nuclear power engineering portland cement, using raw material be by weight ratio：Lime
Stone debris 78.0%, silica debris 9.0%, blast furnace granulated slag 5.5%, iron ore mining mine tailing 7.5%；Above-mentioned raw materials are mixed
Close grinding after sequentially pass through preheater hot exchanges, gas solid separation process, dore furnace carbonate decomposition, dry-process rotory kiln calcine, cold
But obtain Portland clinker afterwards；Described dore furnace middle portion temperature is 870 DEG C, and described dry-process rotory kiln kiln tail smoke-box temperature is
1000℃；Iron is removed through magnetic separator before described blast furnace granulated slag combined grinding.
Embodiment 4
A kind of industrial solid waste residue produces the method for nuclear power engineering portland cement it is characterised in that adopting raw material by weight
Proportioning is：Lime stone debris 75.6%, silica debris 12.8%, blast furnace granulated slag 2.2%, iron ore mining mine tailing 9.6%；
Preheater hot exchange, gas solid separation process, dore furnace carbonate decomposition, dry back will be sequentially passed through after above-mentioned raw materials combined grinding
Portland clinker is obtained after rotary kiln calcining, cooling；Described dore furnace middle portion temperature is 850 DEG C, described dry-process rotory kiln kiln tail
Smoke-box temperature is 950 DEG C；Iron is removed through magnetic separator before described blast furnace granulated slag combined grinding.
Claims (4)
1. a kind of industrial solid waste residue produces the method for nuclear power engineering portland cement it is characterised in that pressing weight using raw material
Measuring proportioning is：Lime stone debris 72～78%, silica debris 7.0～16%, blast furnace granulated slag 1.0～5.5%, iron ore
Mining mine tailing 8.0～12.0%；By sequentially passing through after above-mentioned raw materials combined grinding, preheater hot exchanges, gas solid separation is processed, decomposition
Stove carbonate decomposition, dry-process rotory kiln calcining, cooling after nuclear power engineering Portland clinker.
2. a kind of method that industrial solid waste residue produces nuclear power engineering portland cement as claimed in claim 1, its feature exists
In：Described dore furnace middle portion temperature is 830～870 DEG C.
3. a kind of method that industrial solid waste residue produces nuclear power engineering portland cement as claimed in claim 1, its feature exists
In：Described dry-process rotory kiln kiln tail smoke-box temperature is 900～1000 DEG C.
4. a kind of method that industrial solid waste residue produces nuclear power engineering portland cement as claimed in claim 1, its feature exists
In：Iron is removed through magnetic separator before described raw material blast furnace granulated slag combined grinding.
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| CN201610782725.XA CN106396437A (en) | 2016-08-31 | 2016-08-31 | Method of using industrial solid slag to produce silicate cement for nuclear power engineering |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640842A (en) * | 2004-12-15 | 2005-07-20 | 吉林省通化特种水泥集团股份有限公司 | Special cement and its production process |
| CN102701615A (en) * | 2012-06-29 | 2012-10-03 | 酒钢(集团)宏达建材有限责任公司 | Method for producing slag portland cement by basalt in ingredients of cement |
| CN102718419A (en) * | 2012-06-29 | 2012-10-10 | 酒钢(集团)宏达建材有限责任公司 | Method for producing portland cement for road by blending iron ore beneficiation tailings in cement |
| CN102730992A (en) * | 2012-06-29 | 2012-10-17 | 酒钢(集团)宏达建材有限责任公司 | Method for producing low-alkali Portland cement by using industrial solid waste |
| CN102730991A (en) * | 2012-06-29 | 2012-10-17 | 酒钢(集团)宏达建材有限责任公司 | Method for producing sulfate resistant cement by using converter steel slag |
| CN102898050A (en) * | 2012-10-22 | 2013-01-30 | 中国建筑材料科学研究总院 | High-magnesium minimum-inflation low-heat cement and preparation method thereof |
-
2016
- 2016-08-31 CN CN201610782725.XA patent/CN106396437A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640842A (en) * | 2004-12-15 | 2005-07-20 | 吉林省通化特种水泥集团股份有限公司 | Special cement and its production process |
| CN102701615A (en) * | 2012-06-29 | 2012-10-03 | 酒钢(集团)宏达建材有限责任公司 | Method for producing slag portland cement by basalt in ingredients of cement |
| CN102718419A (en) * | 2012-06-29 | 2012-10-10 | 酒钢(集团)宏达建材有限责任公司 | Method for producing portland cement for road by blending iron ore beneficiation tailings in cement |
| CN102730992A (en) * | 2012-06-29 | 2012-10-17 | 酒钢(集团)宏达建材有限责任公司 | Method for producing low-alkali Portland cement by using industrial solid waste |
| CN102730991A (en) * | 2012-06-29 | 2012-10-17 | 酒钢(集团)宏达建材有限责任公司 | Method for producing sulfate resistant cement by using converter steel slag |
| CN102898050A (en) * | 2012-10-22 | 2013-01-30 | 中国建筑材料科学研究总院 | High-magnesium minimum-inflation low-heat cement and preparation method thereof |
Non-Patent Citations (2)
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| 彭宝利: "《取代水泥制造技术》", 31 August 2015, 北京：中国建材工业出版社 * |
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Application publication date: 20170215 |
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