CN103848580A - Clinker-free slag portland cement and production method thereof - Google Patents
Clinker-free slag portland cement and production method thereof Download PDFInfo
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- CN103848580A CN103848580A CN201410057596.9A CN201410057596A CN103848580A CN 103848580 A CN103848580 A CN 103848580A CN 201410057596 A CN201410057596 A CN 201410057596A CN 103848580 A CN103848580 A CN 103848580A
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- slag
- gypsum
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- furnace slag
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- 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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Abstract
The invention discloses clinker-free slag portland cement and a production method thereof. The clinker-free slag portland cement comprises the following raw materials by mass percent: 55-85% of grained blast furnace slag powder, 12-20% of gypsum, and 3-25% of limestone, wherein the grained blast furnace slag powder is S95 grade, and the specific surface area is greater than or equal to 400m<2>/kg. The method comprises the following steps: feeding the gypsum and the limestone to a crusher to crush; grinding into below 2% screen residues of a square hole sieve of which the fineness is 0.08mm by a ball grinder, and evenly mixing with the grained blast furnace slag powder, so as to obtain the slag portland cement. The clinker-free slag portland cement has the advantages that the process is simple, and the slag adding amount can be greatly increased, so that the slag is fully utilized, and the production cost is reduced. Meanwhile, raw material components do not contain a cement clinker, so that not only is the production cost reduced, but also the pollution to environment in the clinker production process is reduced.
Description
Technical field
The present invention relates to a kind of without grog Portland blast furnace slag cement and production method thereof.
Background technology
Portland blast furnace slag cement is the cement type that China's output is maximum.It has that hydration heat is low, good heat resistance, later strength are high, can make full use of the advantages such as industrial residue, is widely used in industry and covil construction.In GB definition, the fine slag contents of this kind cement allows to reach 20 ﹪～70 ﹪.But due to the more difficult mill of slag, when slag is together with grog when grinding, often grog is ground very carefully, and slag is still thicker.Because slag particle is thicker, and slag cement basicity is lower, and therefore after hydration and hardening, most of slag particle is aquation completely, has relatively reduced the content of gelatinous mass in Behavior of Hardened Cement Paste, and the activity of slag is difficult to performance, thereby affects the intensity of cement.So along with the increase of fine slag contents, cement mark sharply declines, cause cement quality defective, all < 50 ﹪ of fine slag contents in the slag cement that conventional art is produced.
Summary of the invention
The technical problem to be solved in the present invention is to propose one without grog Portland blast furnace slag cement and production method thereof, and technique is simple, can increase considerably slag mix content, thereby slag is fully used, and has fallen lower production cost; Meanwhile, cement grog not in material component, has not only reduced production cost, has also reduced the pollution to environment in grog production process.
Technical solution of the present invention is:
A kind of without grog Portland blast furnace slag cement, formed by following raw material by weight percentage:
Graining blast-furnace cinder micro-powder 55%～85%;
Gypsum 12%～20%;
Wingdale 3%～25%;
Described graining blast-furnace cinder micro-powder is S95 level, its specific surface area>=400m
2/ kg.
Described gypsum is dihydrate gypsum, CaO content >=45% in described Wingdale.
Without a production method for grog Portland blast furnace slag cement, concrete steps are as follows:
Weight percent is respectively after 12%～20% gypsum, 3%～25% Wingdale send into pulverizer and pulverize; be that 0.08mm square hole sieve tails over below 2% through ball mill grinding to fineness; mix with 55%～85% graining blast-furnace cinder micro-powder again; described graining blast-furnace cinder micro-powder is S95 level, its specific surface area>=400m
2/ kg, obtains Portland blast furnace slag cement.
Described gypsum is dihydrate gypsum, CaO content >=45% in described Wingdale.
The present invention has following beneficial effect:
1, technique is simple, and the fineness of S95 level graining blast-furnace cinder micro-powder is large, its specific surface area can>=400m
2/ kg, as the adulterant of cement, its activity has obtained fully playing, thereby the volume of slag is increased greatly, makes the volume of graining blast-furnace cinder micro-powder can reach 55%～85%, reduce production costs thereby reach, the object of increasing economic efficiency.
2, formula is simple, and raw material is easy to get, with low cost, is particularly suitable for large-scale cement grinding station suitability for industrialized production.
3, Wingdale is mixed as active material, played the effect that excites graining blast-furnace cinder micro-powder lateral reactivity, improved strength of cement.The method is produced cement without grog, thereby reaches the object of significant save energy, minimizing environmental pollution.
4, reduce production costs.Can reduce more than 10% than conventional art production cost.
Embodiment
Embodiment 1(produces 32.5 slag silicate cement)
After the Wingdale 25kg that takes dihydrate gypsum 20kg, CaO content>=45% sends into pulverizer and pulverizes, be that 0.08mm square hole sieve tails over below 2% through ball mill grinding to fineness, then with specific surface area>=400m
2the graining blast-furnace cinder micro-powder 55kg of/kg mixes, and obtains 32.5 Portland blast furnace slag cements.
Embodiment 2(produces 32.5 slag silicate cement)
After the Wingdale 3kg that takes dihydrate gypsum 12kg, CaO content>=45% sends into pulverizer and pulverizes, be that 0.08mm square hole sieve tails over below 2% through ball mill grinding to fineness, then with specific surface area>=400m
2the graining blast-furnace cinder micro-powder 85kg of/kg mixes, and obtains 32.5 Portland blast furnace slag cements.
Embodiment 3(produces 42.5 slag silicate cement)
After the Wingdale 17kg that takes dihydrate gypsum 15kg, CaO content>=45% sends into pulverizer and pulverizes, be that 0.08mm square hole sieve tails over below 2% through ball mill grinding to fineness, then with specific surface area>=400m
2the graining blast-furnace cinder micro-powder 68kg of/kg mixes, and obtains 42.5 Portland blast furnace slag cements.
Embodiment 4(produces 42.5 slag silicate cement)
After the Wingdale 13kg that takes dihydrate gypsum 16kg, CaO content>=45% sends into pulverizer and pulverizes, be that 0.08mm square hole sieve tails over below 2% through ball mill grinding to fineness, then with specific surface area>=400m
2the graining blast-furnace cinder micro-powder 71kg of/kg mixes, and obtains 42.5 Portland blast furnace slag cements.
Comparative example 1(conventional art is produced 32.5 Portland blast furnace slag cements)
After taking Portland clinker 35kg, granulated blast-furnace slag 25kg, boiling furnace slag 5kg, gypsum 5 kg and sending into pulverizer and pulverize, be that 0.08mm square hole sieve tails over below 6.5% through ball mill grinding to fineness, obtain 32.5 Portland blast furnace slag cements.
Comparative example 2(conventional art is produced 42.5 Portland blast furnace slag cements)
After taking Portland clinker 25kg, granulated blast-furnace slag 20kg, boiling furnace slag 7.5kg, gypsum 4.5 kg and sending into pulverizer and pulverize, be that 0.08mm square hole sieve tails over below 6.5% through ball mill grinding to fineness, obtain 42.5 Portland blast furnace slag cements.
The detection results of property of the Portland blast furnace slag cement of the embodiment of the present invention 1～embodiment 4, comparative example 1～comparative example 2 is as shown in table 1.
Table 1
Claims (4)
1. without a grog Portland blast furnace slag cement, it is characterized in that: formed by following raw material by weight percentage:
Graining blast-furnace cinder micro-powder 55%～85%;
Gypsum 12%～20%;
Wingdale 3%～25%;
Described graining blast-furnace cinder micro-powder is S95 level, its specific surface area>=400m
2/ kg.
2. according to claim 1 without grog Portland blast furnace slag cement, it is characterized in that: described gypsum is dihydrate gypsum CaO content >=45% in described Wingdale.
3. without a production method for grog Portland blast furnace slag cement, it is characterized in that: concrete steps are as follows:
Weight percent is respectively after 12%～20% gypsum, 3%～25% Wingdale send into pulverizer and pulverize; be that 0.08mm square hole sieve tails over below 2% through ball mill grinding to fineness; mix with 55%～85% graining blast-furnace cinder micro-powder again; described graining blast-furnace cinder micro-powder is S95 level, its specific surface area>=400m
2/ kg, obtains Portland blast furnace slag cement.
4. the production method without grog Portland blast furnace slag cement according to claim 3, is characterized in that: described gypsum is dihydrate gypsum, CaO content >=45% in described Wingdale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057596.9A CN103848580A (en) | 2014-02-20 | 2014-02-20 | Clinker-free slag portland cement and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410057596.9A CN103848580A (en) | 2014-02-20 | 2014-02-20 | Clinker-free slag portland cement and production method thereof |
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| CN103848580A true CN103848580A (en) | 2014-06-11 |
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| CN201410057596.9A Pending CN103848580A (en) | 2014-02-20 | 2014-02-20 | Clinker-free slag portland cement and production method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016636A (en) * | 2015-07-07 | 2015-11-04 | 东南大学 | Supersulphated foamed cement insulation board and preparation process thereof |
| CN105271846A (en) * | 2015-09-16 | 2016-01-27 | 邱如新 | Alkali slag cement production technology |
| CN111268928A (en) * | 2020-02-28 | 2020-06-12 | 桂林理工大学 | Composite micro powder partially replacing cement and cement-based material |
| CN112960920A (en) * | 2021-04-27 | 2021-06-15 | 天津金石建材科技有限公司 | Green ecological environment-friendly cement and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB546629A (en) * | 1941-01-16 | 1942-07-22 | Erik Bertil Bjorkman | Improved method of manufacturing supersulphated slag cement |
| CN1097722A (en) * | 1993-07-17 | 1995-01-25 | 易甡贤 | Quick setting high strength low heat-generating gypsum slag cement |
| CN1141267A (en) * | 1996-02-09 | 1997-01-29 | 张耀伦 | High anti-break and high strength slag cement without clinker and burning |
| JP2003321259A (en) * | 2002-04-25 | 2003-11-11 | Bisoo:Kk | Non-clinker white and colored cements comprising water- granulated slag and their preparation processes |
| CN101037308A (en) * | 2007-05-21 | 2007-09-19 | 北京东方建宇混凝土科学技术研究院有限公司 | Preparation method of clinker-free cement and concrete prepared with same |
-
2014
- 2014-02-20 CN CN201410057596.9A patent/CN103848580A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB546629A (en) * | 1941-01-16 | 1942-07-22 | Erik Bertil Bjorkman | Improved method of manufacturing supersulphated slag cement |
| CN1097722A (en) * | 1993-07-17 | 1995-01-25 | 易甡贤 | Quick setting high strength low heat-generating gypsum slag cement |
| CN1141267A (en) * | 1996-02-09 | 1997-01-29 | 张耀伦 | High anti-break and high strength slag cement without clinker and burning |
| JP2003321259A (en) * | 2002-04-25 | 2003-11-11 | Bisoo:Kk | Non-clinker white and colored cements comprising water- granulated slag and their preparation processes |
| CN101037308A (en) * | 2007-05-21 | 2007-09-19 | 北京东方建宇混凝土科学技术研究院有限公司 | Preparation method of clinker-free cement and concrete prepared with same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016636A (en) * | 2015-07-07 | 2015-11-04 | 东南大学 | Supersulphated foamed cement insulation board and preparation process thereof |
| CN105271846A (en) * | 2015-09-16 | 2016-01-27 | 邱如新 | Alkali slag cement production technology |
| CN111268928A (en) * | 2020-02-28 | 2020-06-12 | 桂林理工大学 | Composite micro powder partially replacing cement and cement-based material |
| CN112960920A (en) * | 2021-04-27 | 2021-06-15 | 天津金石建材科技有限公司 | Green ecological environment-friendly cement and preparation method thereof |
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Application publication date: 20140611 |
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