CN1019664B - White cement made of phosphorus slag and steel slag - Google Patents
White cement made of phosphorus slag and steel slagInfo
- Publication number
- CN1019664B CN1019664B CN90101739A CN90101739A CN1019664B CN 1019664 B CN1019664 B CN 1019664B CN 90101739 A CN90101739 A CN 90101739A CN 90101739 A CN90101739 A CN 90101739A CN 1019664 B CN1019664 B CN 1019664B
- Authority
- CN
- China
- Prior art keywords
- slag
- phosphorus
- white cement
- cement
- steel
- 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.)
- Expired
Links
Classifications
-
- 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 novel cement variety, in particular to novel phosphorous slag and steel slag white cement prepared by phosphorous slag and electric furnace steel-making reducing slag. Mixing phosphorus slag, steel slag and calcined gypsum according to a certain proportion, and grinding the mixture to the fineness of not less than 4000cm2And/g, and controlling the content of sulfur trioxide in the mixture to be between 10 and 13 percent. White cement of the present inventionThe standard of 325# white cement in GB 2015-80 is completely met, and the production process is simple, energy is saved, the cost is low, and the popularization is easy.
Description
The present invention relates to a kind of cement new variety, the prepared phosphorus slag slag-base white cement of waste residue-Electric furnace steel making reducing slag that promptly utilizes the waste residue-phosphorus slag of discharging in the phosphorus production and Electric furnace steel making to discharge.
Phosphorus slag is that electric furnace process manufacture-yellow phosphorus is discharged and shrend becomes granular waste residue.Whenever produce one ton of yellow phosphorus and will produce 8～10 tons of phosphorus slags.Along with the increase of world's element phosphor output, the quantity discharged of phosphorus slag also increasing, has reached about 20,000,000 tons at present.With regard to China, only the quantity discharged in Zhejiang, Yunnan just reaches the hundreds of thousands of ton.Therefore, its processing and utilization have caused people's attention.
The Soviet Union just included phosphorus slag in granulated blast-furnace slag standard (Γ OCT3476-74) in 1974.China has also issued the national standard (GB 6645-86) of " the granulation electric furnace phosphoric slag that is used for cement " in 1986, thereby has confirmed that phosphorus slag is a kind of active mixed material.In addition, states such as the Soviet Union, West Germany as one of composition of concrete agglutinate, have declared patent with phosphorus slag.Before the present invention proposed, also the someone utilized the phosphorus slag outward appearance to be this characteristics development phosphorus slag white cement of canescence both at home and abroad.Its method mainly is to add a certain amount of gypsum, lime, alkali or white cement clinker etc. in phosphorus slag, but the product of being developed all presents the low shortcoming of early strength.Thereby concentrating on, the research work that makes the phosphorus slag white cement seeks to solve on the early strength of cement.
Electric furnace steel making reducing slag (hereinafter to be referred as slag) is the slag that the electric-arc furnace steelmaking reduction period is discharged.Slag efflorescence in natural cooling process becomes white granulated slag.Utilize the characteristics of close Chemical Composition of slag and cement clinker and mineral composition, people produce slag-base white cement.But slag-base white cement has coagulated lumps, presses shortcomings such as steaming stability is bad, later strength retraction, causes the steel slag utilization rate not high.
The present invention just is above-mentioned phosphorus slag and slag are combined dexterously, utilizes characteristics separately, prepares a kind of condensing normally, the early strength height, and not retraction of later strength is pressed and is steamed the qualified no clinker phosphorous residue slag-base white cement of stability.
The present invention adopts phosphorus slag, slag and three kinds of materials of calcined gypsum integral part as no clinker phosphorous residue slag-base white cement: phosphorus slag 30～41%(weight), slag 40～50%(weight), calcined gypsum 19～23%(weight).In these three kinds of materials, high basicity slag during slag belongs to, it is as a part of forming, not only have the fast characteristics hard soon, that improve early strength of coagulating, basicity when also having improved hydrated cementitious, promote the performance of phosphorus slag lateral reactivity, make compositions such as active silica in the phosphorus slag vitreous substance, activated alumina generate hydrated calcium silicate gel, ettringite and drated calcium aluminate, thereby form the main body of sclerosis phosphorus slag steel slag cement stone.And the phosphorus slag aquation slowly characteristics make the later strength of cement constantly increase.In addition, active silica in the phosphorus slag and the free magnesium in the slag generate the hydrated magnesium silicate colloid, make that the pressure steaming stability of phosphorus slag slag-base white cement is qualified.Moreover calcined gypsum not only plays the sulphate activation agent in the hydration and hardening process of no clinker phosphorous residue slag-base white cement, and the effect of participating in performance intensity directly, improving whiteness.
The preparation method of phosphorus slag slag-base white cement of the present invention may further comprise the steps:
1. with phosphorus slag 30～41%(weight), slag 40～50%(weight) and calcined gypsum 19～23%(weight) mix;
2. the compound grinding with gained in the step 1 becomes fineness to be not less than 4000cm
2/ g, and mensuration sulfur trioxide content wherein, sulfur trioxide content is controlled between 10～13%.
The present invention has following characteristics:
1. utilized a large amount of industrial residues, need not use expensive white cement clinker, production technique is simple, and save energy is with low cost, is easy to promote.
2. the phosphorus slag slag-base white cement condenses normally, the early strength height, and later strength constantly increases.From the table 1 of appendix as can be seen, its intensity of 3 days 7 days has reached 425# white portland cement index, all satisfies 325# white portland cement index in 28 days.The white cement that explanation prepares by mode of the present invention satisfies the strength criterion of 325# white portland cement in (GB 2015-80) fully.Its whiteness, time of coagulation, stability also all satisfy the standard of (GB 2015-80).
3. added the calcined gypsum of volume in the prepared phosphorus slag slag-base white cement of the present invention, thereby made sulfur trioxide content in the cement between 10-13%, surpassed the scope of stipulating in the general silicate cement standard, but its water logging stability has been still qualified.This is because contain activated alumina in the phosphorus slag, contains aluminium mineral material in the slag, thereby makes it belong to the vitriol type.In hydration process, aluminium mineral material is aquation at first, generates ettringite with more gypsum effect, does not continue to react after sclerosis and causes the water logging stability bad and there is unnecessary gypsum.
The use properties of the phosphorus slag slag-base white cement that the present invention is prepared is not less than white portland cement, can be widely used on the decoration of industry, civil building engineering.In the phosphorus slag slag-base white cement, add an amount of alkali-proof pigment, can prepare phosphorus slag slag colored cement, also be applicable to and make various slim decorative colour bricks, be used for exterior wall and ground decoration.
The physicals table 1 of phosphorus slag slag-base white cement
Proportioning (%) folding strength (MPa) ultimate compression strength (MPa)
Example
Phosphorus slag slag gypsum 28 days on the 7th on the 3rd on the 28th on the 7th on the 3rd
1 41 40 19 3.5 3.7 5.5 20.8 22.7 39.3
2 36 43 21 3.4 4.2 5.8 22.8 27.9 37.6
3 34 45 21 3.7 5.1 6.8 24.0 34.7 41.4
4 39 40 21 3.6 5.1 5.7 22.6 30.0 37.0
5 39 40 21 3.3 4.7 5.8 21.6 29.2 35.1
6 34 45 21 3.8 4.6 6.0 25.9 33.0 41.6
7 36 43 21 3.5 4.8 6.4 25.6 34.2 42.2
8 36 43 21 4.0 5.0 5.7 23.9 29.6 41.8
9 36 43 21 3.7 4.7 6.3 22.4 28.6 36.9
10 30 50 20 4.3 5.1 7.4 27.4 32.1 42.5
11 37 40 23 4.0 4.9 5.5 26.2 27.7 38.6
Phosphorus slag slag-base white cement table 2
Real proportioning (%) thick time of coagulation of stability is white
The steaming degree is pressed in example phosphorus slag slag gypsum degree initial set final set water logging boiling
1 41 40 19 21.0 1:07 1:51 qualified qualified 71.9
1 41 40 19 24.0 1:14 1:56 qualified qualified 70.9
4 39 40 21 29.5 1:02 2:15 qualified qualified 80.5
5 39 40 21 28.7 1:50 3:27 qualified qualified 71.8
7 36 43 21 27.0 0:46 4:00 qualified qualified 79.5
8 36 43 21 23.2 1:20 2:00 are qualified qualified-
9 36 43 21 28.4 1:17 2:56 qualified qualified 75.0
10 30 50 20 29.5 1:20 1:46 are qualified qualified-
10 30 50 20 28.8 1:09 2:59 are qualified qualified-
Annotate: the phosphorus slag in table 1, the table 2 comprises the phosphorus slag on ground such as Wenzhou, Shijiazhuang, Beijing.
Slag in table 1, the table 2 comprises the slag on ground such as Beijing, Hangzhou, Benxi, Shijiazhuang.
Claims (1)
1, a kind of phosphorus slag slag-base white cement, it is characterized by this cement is by (by weight) phosphorus slag 30-41%, Electric furnace steel making reducing slag 40-50%, calcined gypsum 19-23% forms, and the fineness of composition is at least 4000cm
2/ g, sulfur trioxide content is between 10-13%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90101739A CN1019664B (en) | 1990-04-05 | 1990-04-05 | White cement made of phosphorus slag and steel slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90101739A CN1019664B (en) | 1990-04-05 | 1990-04-05 | White cement made of phosphorus slag and steel slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1055530A CN1055530A (en) | 1991-10-23 |
| CN1019664B true CN1019664B (en) | 1992-12-30 |
Family
ID=4877233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90101739A Expired CN1019664B (en) | 1990-04-05 | 1990-04-05 | White cement made of phosphorus slag and steel slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019664B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047579C (en) * | 1991-12-25 | 1999-12-22 | 云南省建筑材料科学研究设计院 | Production method of special cement by use of electric furnace phosphoric slag |
| CN1044596C (en) * | 1992-05-07 | 1999-08-11 | 云南省建筑材料科学研究设计院 | Prodn. method for cement clinker by making use of electric furnace phosphorus slag and blast furnace slag |
| CN102276173A (en) * | 2010-06-11 | 2011-12-14 | 鞍山钢铁集团公司 | White cement and production method thereof |
| CN109896770B (en) * | 2019-04-19 | 2021-08-20 | 武汉源锦建材科技有限公司 | Concrete reinforcing agent |
-
1990
- 1990-04-05 CN CN90101739A patent/CN1019664B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1055530A (en) | 1991-10-23 |
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| SE01 | Entry into force of request for substantive examination | ||
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| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |