CN1085195A - Powdered coal ash-slag cement and manufacture method thereof - Google Patents
Powdered coal ash-slag cement and manufacture method thereof Download PDFInfo
- Publication number
- CN1085195A CN1085195A CN93117307A CN93117307A CN1085195A CN 1085195 A CN1085195 A CN 1085195A CN 93117307 A CN93117307 A CN 93117307A CN 93117307 A CN93117307 A CN 93117307A CN 1085195 A CN1085195 A CN 1085195A
- Authority
- CN
- China
- Prior art keywords
- slag
- cement
- coal ash
- flyash
- exciting agent
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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
- C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
-
- 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)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention is a base-material with flyash, slag, adds exciting agent, and batching is mixed homogenize in proportion, is finely ground to hydraulic cementing materials.Exciting agent is made up of sodium sulfate, lime, gypsum, high-alumina fly, magnesium chloride, and wherein high-alumina fly is the alkali industrial waste.Advantage of the present invention: manufacturing process is simple, only needs cement grinding, does not need raw material preparation and high-temperature calcination, thereby less investment, economizes on coal 75% at cement economize on electricity 60% per ton; Utilize waste material to be base-material, reduce environmental pollution; Every performance index are stable, and surpass Portland blast, and cost is than Portland blast low 25-30%.Can be used for industrial civil building and other concrete works and make cement prefabricated component etc.
Description
The present invention is to be base-material with flyash, slag, manufactures hydraulic cementing materials, belongs to the manufacture method of cement.
Through the Searches of Patent Literature both at home and abroad, the open CN87105441 patent of prior art, it is to be that base-material and sulfate slag are mixed with raw material with alkaline residue, flyash, through being sintered into Portland clinker, and then add the aluminium slag or slag is made Portland blast, its manufacturing process complexity, need through " two mills one burn ", promptly, after high-temperature calcination, wear into hydraulic cementing materials once more earlier with the raw mill powdering.
And for example disclosed Japanese J59128239 high-early-strength cement manufacture method becomes flyash with coal combustion earlier, and Wingdale is through calcining, and both mix the back and pulverize calcining again, will calcine after product, add slag again, and plain cement, calcium sulfate mix use.Its manufacturing process complexity needs to be equipped with a certain amount of slag, cement mixing use again through " two burn a mill " product.
Disclosed for another example Soviet Union SU1242481 mining high-strength cement is mixed by slag, calcined dolomite, dehydrated gyp-and flyash, though manufacture craft is simple, only mill does not burn.But slag accounts for 85-90% in the cement of making, during construction 80-85% flyash is made addition material and mix use, fill as mine worked-out section, therefore the high-strength cement of digging up mine only is suitable for the high resistance to compression of concrete, the requirement cheaply of mass, its weak point, it does not have high early strong characteristic, can not satisfy the requirement of industrial civil building.
Purpose of the present invention, for overcoming the prior art weak point, providing a kind of is base-material with flyash and slag, manufacturing process simply, does not need calcining, and is with low cost, the manufacture method of the high early-strength fly-ash slag cement of excellent property, thereby the saving energy reduces cost, and turns waste into wealth.
The manufacture method of powdered coal cinder cement of the present invention with flyash, slag drying, in the required ratio of every component batching, is mixed homogenize, and levigate hydraulic cementing materials is called powdered coal ash-slag cement, and its fineness is 0.08mm square hole sieve surplus 3-7%.
2, the component of fine coal slag cement of the present invention (weight %) is: flyash 15-25, slag 60-70, grog 10-15, exciting agent 2-6.5.Should meet the GB1596 regulation to flyash in the said components, slag should meet outside the BG203 regulation, scoriaceous reactivity coefficient＞1.1, and alkaline coefficient 〉=1, vitreum content and crystallinity energy are the bigger the better.How much look the black particle of slag aborning, adjust the consumption of exciting agent, if the black particle of slag is many, then the exciting agent component adopts the upper limit, otherwise adopts lower limit.
3, exciting agent of the present invention is an alkali-activator, and its composition (weight %) is sodium sulfate 5-30, lime 5-20, gypsum 5-20, alkali industrial waste YS 10-40, magnesium chloride 5-35.Wherein YS is the geographic alkali industrial waste of Yuncheng, Shanxi, and its main component contains AL
2O
3, SO
2Deng, the YS interaction energy improves the cement use properties.
The principle of work of powdered coal ash-slag cement manufacture method of the present invention is described below:
The present invention utilizes SiO in scoriaceous lateral reactivity (the about 80 card/grams of its potential crystallization energy) and the flyash
2And AL
2O
3, in proportion with exciting agent and slag, flyash mixing homogenize, grinding powdering material.In manufacturing processed, exciting agent excites scoriaceous lateral reactivity, scoriaceous lateral reactivity is brought into play, and had an effect by slag and flyash, makes flyash and scoriaceous lattice imperfection carry out complementation.
Powdered coal ash-slag cement of the present invention except that generating a part of hydrated calcium silicate, also generates aquation ca aluminosilicate and sodium silicoaluminate in hydration process.Above-mentioned hydrate all generates at normal temperatures.It is very fast that these hydrates have early strength enhancement rate, suitably increases the volume and the blended grinding rate of gypsum, becomes high-early-strength cement.After 28 days, strength of cement of the present invention can reach 32.5MPa, 42.5MPa at normal temperature, and rate of wear is 3.28Kg/m
2, erosion resistance (F) is 0.93, drying shrinkage % is-0.10.Its every performance meets or exceeds national standard, sees Table 1 in detail.
The major advantage of powdered coal ash-slag cement of the present invention and manufacture method thereof:
1, manufacture method is simple.Only need grinding, do not need the raw material preparation, do not need high-temperature calcination, simplified technical process than the prior art " two mills one burn " or the manufacture method of " two burn a mill ".Thereby the saving facility investment, energy efficient.Cement economize on electricity 60% per ton, joint powder 75%, cost is than the low 25-30% of slag cement.So powdered coal ash-slag cement manufacture method of the present invention is a major reform to cement production process.
2, reducing environmental pollution turns waste into wealth.Utilize industrial residue and flyash to be main raw material, for the industrial waste utilization with reduce environmental pollution and open up a new way, have remarkable economic efficiency and social benefit.
3, cement performance of the present invention is good, all is up to state standards, and surpasses Portland blast.Especially early stage anti-folding, ultimate compression strength are higher.See Table shown in the 1-3.The making cement prefabricated component be can satisfy, industrial civil building and the use of other concrete works are used for.
Exemplify embodiment below and further specify manufacture method of the present invention.
Embodiment 1-makes the 325# powdered coal ash-slag cement
Adopting fly ash in electric power plant and steel mill's slag is base-material, after using 1.5 * 12m drying machine drying respectively, press flyash 23%, its black particle of slag 60%(is more), portland cement clinker 12%, exciting agent 5% batching, mix homogenize, by the fine grinding of HL300 lift feeding 1.5 * 5.7m ball mill, going out grinding rate is that 0.08mm square hole sieve screen over-size is 6.5%, the cement performance that produces: its folding strength is 8.8MPa, and ultimate compression strength is 37.6MPa.
Embodiment 2-makes the 425# powdered coal ash-slag cement
Implementation condition is with embodiment 1, and its component is flyash 15%, slag 65%, portland cement clinker 15%, exciting agent 5% batching, uses the ball mill fine grinding, and going out grinding rate is that 0.08mm square hole sieve screen over-size is 6.5%.The cement performance that produces: folding strength is 9.2MPa, and ultimate compression strength is 46.0MPa.
Embodiment 3-525# powdered coal ash-slag cement
Implementation condition is selected high-quality slag (the fully white particle slag of water-cooled) with embodiment 1, and the proportioning of exciting agent is adjusted into: the content of sodium sulfate and YS is the upper limit, and the content of lime, gypsum is lower limit.Flyash 19%, slag 65%, portland cement clinker 12%, exciting agent 4% batching, mixing homogenize, fine grinding.The cement performance that produces: folding strength is 9.8MPa, and ultimate compression strength is 54.0MPa.
Claims (4)
1, a kind of powdered coal ash-slag cement, its component (weight %) is: flyash 15-25, slag 60-70, grog 10-15, exciting agent 2-6.5.
2, a kind of powdered coal ash-slag cement manufacture method with flyash, slag drying, in the required ratio batching of each component, is mixed homogenize, levigate.
3, powdered coal ash-slag cement according to claim 1 is characterized in that exciting agent is an alkali-activator, and its composition (weight %) is: sodium sulfate 5-30, lime 5-20, gypsum 5-20, alkali industrial waste YS 10-40, magnesium chloride 5-35.
4, according to claim 1,3 described powdered coal ash-slag cements, it is characterized in that the alkali industrial waste YS in the exciting agent, its major ingredient is AL
2O
3, SO
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93117307A CN1085195A (en) | 1993-09-02 | 1993-09-02 | Powdered coal ash-slag cement and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93117307A CN1085195A (en) | 1993-09-02 | 1993-09-02 | Powdered coal ash-slag cement and manufacture method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1085195A true CN1085195A (en) | 1994-04-13 |
Family
ID=4991965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93117307A Withdrawn CN1085195A (en) | 1993-09-02 | 1993-09-02 | Powdered coal ash-slag cement and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1085195A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0786438A4 (en) * | 1995-08-14 | 1999-10-20 | Chichibu Onoda Cement Corp | Curable composition and cured article |
| CN1071720C (en) * | 1997-01-09 | 2001-09-26 | 徐彬 | Versatile slag flyash cement excitant and its use |
| CN1102133C (en) * | 1997-12-25 | 2003-02-26 | 张耀伦 | Less clinker high early strength flyash cement |
| CN1102543C (en) * | 1998-10-09 | 2003-03-05 | 株洲市台联企业总公司 | High-performance non-clinker powdered coal ash-slags cement |
| CN1309677C (en) * | 2005-09-01 | 2007-04-11 | 上海市政工程设计研究院 | Corrosion-resisting high-performance concrete suitable for sewage works and its preparation method |
| CN100363295C (en) * | 2005-12-23 | 2008-01-23 | 武汉理工大学 | Gypsum mine plastering material and preparation process thereof |
| CN100392042C (en) * | 2005-10-10 | 2008-06-04 | 长安大学 | Soil curing agent of road |
| CN100462324C (en) * | 2007-02-08 | 2009-02-18 | 上海交通大学 | Powder coal ash expanding self-dense concrete for filling square steel pipe |
| CN102050614A (en) * | 2010-11-03 | 2011-05-11 | 中国科学院青海盐湖研究所 | Dolomite magnesium cement concrete and preparation method thereof |
| CN102092973A (en) * | 2010-12-17 | 2011-06-15 | 南京工业大学 | Fly ash cement and preparation method thereof |
| CN102643067A (en) * | 2012-04-11 | 2012-08-22 | 王谦源 | Coal ash gangue filling activity-stimulating rubber solid material and preparation method thereof |
| CN104341114A (en) * | 2014-09-28 | 2015-02-11 | 忻城县红运水泥有限责任公司 | Green ecological cement taking waste in lime factory as raw material, and production method of green ecological cement |
| CN104609751A (en) * | 2005-10-31 | 2015-05-13 | 太平洋水泥株式会社 | Apparatus for adding wet ash to cement and addition method |
| CN105481279A (en) * | 2014-09-15 | 2016-04-13 | 武汉鸿信通科技有限公司 | Preparation method of green environmental-protection cement |
| CN109020539A (en) * | 2018-08-30 | 2018-12-18 | 广州大学 | Alkali-activated carbonatite fly-ash slag piezoelectric patches and preparation method thereof |
| CN109437610A (en) * | 2018-12-18 | 2019-03-08 | 西安建筑科技大学 | A method of cementitious material is prepared using Cha Er Han Salt Lake solution and slag, silicon ash |
| CN109912243A (en) * | 2019-03-19 | 2019-06-21 | 西卓子山草原水泥集团包头三固有限责任公司 | A kind of cement produced using Industrial Solid Waste |
| CN111303890A (en) * | 2020-01-21 | 2020-06-19 | 新疆盛洁环境技术有限责任公司 | Curing agent for solid waste treatment and application thereof |
| CN115043632A (en) * | 2022-07-21 | 2022-09-13 | 福建工程学院 | Sulfate activated fly ash cementing material and preparation method thereof |
-
1993
- 1993-09-02 CN CN93117307A patent/CN1085195A/en not_active Withdrawn
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0786438A4 (en) * | 1995-08-14 | 1999-10-20 | Chichibu Onoda Cement Corp | Curable composition and cured article |
| CN1071720C (en) * | 1997-01-09 | 2001-09-26 | 徐彬 | Versatile slag flyash cement excitant and its use |
| CN1102133C (en) * | 1997-12-25 | 2003-02-26 | 张耀伦 | Less clinker high early strength flyash cement |
| CN1102543C (en) * | 1998-10-09 | 2003-03-05 | 株洲市台联企业总公司 | High-performance non-clinker powdered coal ash-slags cement |
| CN1309677C (en) * | 2005-09-01 | 2007-04-11 | 上海市政工程设计研究院 | Corrosion-resisting high-performance concrete suitable for sewage works and its preparation method |
| CN100392042C (en) * | 2005-10-10 | 2008-06-04 | 长安大学 | Soil curing agent of road |
| CN104609751A (en) * | 2005-10-31 | 2015-05-13 | 太平洋水泥株式会社 | Apparatus for adding wet ash to cement and addition method |
| CN100363295C (en) * | 2005-12-23 | 2008-01-23 | 武汉理工大学 | Gypsum mine plastering material and preparation process thereof |
| CN100462324C (en) * | 2007-02-08 | 2009-02-18 | 上海交通大学 | Powder coal ash expanding self-dense concrete for filling square steel pipe |
| CN102050614A (en) * | 2010-11-03 | 2011-05-11 | 中国科学院青海盐湖研究所 | Dolomite magnesium cement concrete and preparation method thereof |
| CN102092973A (en) * | 2010-12-17 | 2011-06-15 | 南京工业大学 | Fly ash cement and preparation method thereof |
| CN102643067A (en) * | 2012-04-11 | 2012-08-22 | 王谦源 | Coal ash gangue filling activity-stimulating rubber solid material and preparation method thereof |
| CN105481279A (en) * | 2014-09-15 | 2016-04-13 | 武汉鸿信通科技有限公司 | Preparation method of green environmental-protection cement |
| CN104341114A (en) * | 2014-09-28 | 2015-02-11 | 忻城县红运水泥有限责任公司 | Green ecological cement taking waste in lime factory as raw material, and production method of green ecological cement |
| CN109020539A (en) * | 2018-08-30 | 2018-12-18 | 广州大学 | Alkali-activated carbonatite fly-ash slag piezoelectric patches and preparation method thereof |
| CN109020539B (en) * | 2018-08-30 | 2021-01-01 | 广州大学 | Alkali-activated fly ash slag piezoelectric patch and preparation method thereof |
| CN109437610A (en) * | 2018-12-18 | 2019-03-08 | 西安建筑科技大学 | A method of cementitious material is prepared using Cha Er Han Salt Lake solution and slag, silicon ash |
| CN109437610B (en) * | 2018-12-18 | 2021-06-04 | 西安建筑科技大学 | Method for preparing cementing material by using Chaer sweat salt lake solution, slag and silica fume |
| CN109912243A (en) * | 2019-03-19 | 2019-06-21 | 西卓子山草原水泥集团包头三固有限责任公司 | A kind of cement produced using Industrial Solid Waste |
| CN111303890A (en) * | 2020-01-21 | 2020-06-19 | 新疆盛洁环境技术有限责任公司 | Curing agent for solid waste treatment and application thereof |
| CN111303890B (en) * | 2020-01-21 | 2022-03-08 | 新疆盛洁环境技术有限责任公司 | Curing agent for solid waste treatment and application thereof |
| CN115043632A (en) * | 2022-07-21 | 2022-09-13 | 福建工程学院 | Sulfate activated fly ash cementing material and preparation method thereof |
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| C03 | Withdrawal of patent application (patent law 1993) | ||
| WW01 | Invention patent application withdrawn after publication |