CN1528694A - Anhydrite agglutinate antifrost method and antifrost anhydrite agglutinate thereof - Google Patents
Anhydrite agglutinate antifrost method and antifrost anhydrite agglutinate thereof Download PDFInfo
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- CN1528694A CN1528694A CNA031254764A CN03125476A CN1528694A CN 1528694 A CN1528694 A CN 1528694A CN A031254764 A CNA031254764 A CN A031254764A CN 03125476 A CN03125476 A CN 03125476A CN 1528694 A CN1528694 A CN 1528694A
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- anhydrite
- antifrost
- cement
- keene
- exciting agent
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Abstract
The invention is a method to prevent and cure efflorescence by karstenite cementitous material, including the steps: 1), adding compound active exciter and filling prohibiting salt efflorescence from growing in the karstenite; 2), on dry condition, gauging and mixing the above raw material to be able to make the anti-efflorescing karstenite cementitous material. Based on this, according to different usages, it can make karstenite building preparations by different existing production techniques. The anti-efflorescing karstenite cementitous material includes the components by wt%: karstenite 87-95, compound active exciter 3-8 and filling 2-5. It has reasonable raw material components, simple method and property of preventing and curing efflorescence phenomenon.
Description
Technical field
The invention belongs to anhydrite and prepare building material field, method of particularly a kind of keene's cement antifrost and products thereof.
Background technology
China's anhydrite resource is very abundant, and reserves account for 2/3 of gypsum total amount, and it is 31,600,000,000 tons that proven reserve reach.Remove Nanjing, the Shaodong, Taiyuan, the Xingning, beyond the anhydrite deposit minings such as Chongqing, anhydrite is sunk into sleep in underground mostly, and resource utilization is low.Anhydrite has the potential hydration activity that generates dihydrate gypsum with the water reaction, this is the chemical fundamentals that anhydrite can use as material of construction, but lumpy anhydrite aquation hardly, levigated anhydrite hydration speed is also very slow, coagulability is poor, does not have early strength.Only be used for cement setting retarder for many years.In existing anhydrite utilisation technology, adopt adding salt exciting agent to improve hydration rate usually, shorten time of coagulation, make it have practical value.As number of patent application 93110730.X, number of patent application 93110586.2 is to adopt K
2Cr
2O
7, Na
2C
2O
4Deng, but the salt exciting agent is in the anhydrite hydration process of setting, along with the migration of water molecules.Very easily separate out with the thin layer crystal habit, white phenomenon promptly occurs returning, return frost and make product surface form dirt at the alabaster product surface, even efflorescence, add K
2Cr
2O
7Can form bright green, Na at sample surfaces
+Ion is then with Na
2SO
410H
2O forms white salt efflorescence, has a strong impact on the weather resistance and the decorative effect of goods, has restricted the application of anhydrite in material of construction.
Summary of the invention
The present invention is directed to the white phenomenon of returning that exists in the above-mentioned keene's cement, proposed method of a kind of keene's cement antifrost and products thereof.
To achieve these goals, technical scheme of the present invention is: the method for keene's cement antifrost, it is characterized in that realizing: 1) by following steps. in anhydrite, add compound active exciting agent and suppress the filler that salt efflorescence is separated out, make the shared total weight percent of each component be:
Anhydrite 87-95, compound active exciting agent 3-8 suppresses the filler 2-5 that salt efflorescence is separated out;
2). above-mentioned raw materials can promptly become the antifrost keene's cement after metering, mixing under drying conditions.
Above-mentioned antifrost keene's cement can adopt existing production technique to make the anhydrite building product.
Described anhydrite can be the dehydrated gyp-of natural anhydrite, anhydrous fluorgypsum and artificial preparation, in order to improve the hydration rate of agglutinate and goods, the present invention requires anhydrite to adopt the ball mill grinding, to strengthen its surfactivity, fineness is controlled at 200 mesh screen residues and is not more than 3%, and its specific surface area is 4500 ~ 8000cm
2/ g.
Described compound active exciting agent is two or more mixtures such as calcined alunite breeze, sylvite series exciting agent, transition metal sulfate, semi-hydrated gypsum, unslaked lime, and two or more is any proportioning when mixing.
The filler that described inhibition salt efflorescence is separated out can be a kind of in metakaolin fine powder, silicon powder, the superfined flyash.
Described metakaolin fine powder can be prepared from through 800 ℃ of calcinings with kaolin in 1 hour, and superfined flyash adopts the one-level ash.
By the resulting antifrost keene's cement of aforesaid method, it comprises anhydrite, it is characterized in that: add compound active exciting agent, suppress the filler that salt efflorescence is separated out, the shared total weight percent of each component is:
Anhydrite 87-95, compound active exciting agent 3-8 suppresses the filler 2-5 that salt efflorescence is separated out.
Characteristics of the present invention are that raw material is formed rationally, method is simple, science, adopt 500 ~ 600 ℃ of incinerating natural alumstone breezes to replace the industrial alunites that adopt usually, both can send out and realize the activity excitation effect, can prevent the white phenomenon of returning that salts substances too much causes again.Under the acting in conjunction of compound active exciting agent, anhydrite hydration speed is accelerated greatly.Add metakaolin, silicon powder, superfined flyash, its effect is that above-mentioned substance is in the anhydrite hydration process of setting, can generate new hydraulicity thing phase on the one hand, improve the water tolerance and the physical strength of goods, the more important thing is that filler particles can be filled in the hardenite hole, increase the degree of compactness of goods, stop the migration of salt ionic effectively, reach the purpose that frost is returned in control.The present invention has effectively controlled the separating out of salt efflorescence with time of coagulation under the constant prerequisite what keep intensity, for the application of anhydrite resource in New Building Materials laid a good foundation.
Embodiment
Be weight percentage in following examples.
Embodiment 1: get natural anhydrite 89.5%, (calcined alunite breeze+sylvite+semi-hydrated gypsum is any proportioning to compound active exciting agent 5.5% each other.), metakaolin 5%.Used anhydrite is a natural anhydrite, specific surface area 6200cm
2/ g, fineness 200 mesh screen residues 2.4%, the raw material water ratio is less than 4%.
Above-mentioned several raw materials under drying conditions, can promptly be become the antifrost keene's cement after metering, mixing.
Embodiment 2: natural anhydrite 92%, (calcined alunite breeze+sylvite+semi-hydrated gypsum, they are any proportioning to compound active exciting agent 6%.), silicon powder 2%.Used anhydrite is a natural anhydrite, specific surface area 6200cm
2/ g, fineness 200 mesh screen residues 2.4%, the raw material water ratio is less than 4%.
Above-mentioned several raw materials under drying conditions, can promptly be become the antifrost keene's cement after metering, mixing, adopt existing production technique to make the anhydrite building product antifrost keene's cement.
Embodiment 3: natural anhydrite 89%, compound active exciting agent 6% (calcined alunite breeze+sylvite+semi-hydrated gypsum+CuSO
4, they are any proportioning.), metakaolin 5%.Used anhydrite is a natural anhydrite, specific surface area 6200cm
2/ g, fineness 200 mesh screen residues 2.4%, the raw material water ratio is less than 4%.
Above-mentioned several raw materials under drying conditions, can promptly be become the antifrost keene's cement after metering, mixing.
Physical performance index sees the following form
| Embodiment | Presetting period min | Final setting time min | Folding strength MPa | Ultimate compression strength MPa | Return white phenomenon |
| 1 | ?180 | ?310 | ?3.15 | ?16.6 | Do not return frost |
| 2 | ?185 | ?334 | ?2.95 | ?15.4 | Do not return frost |
| 3 | ?150 | ?185 | ?3.65 | ?18.1 | Do not return frost |
Embodiment 4: get anhydrous fluorgypsum 90%, compound active exciting agent 6% (transition metal sulfate and unslaked lime, the two is any proportioning), silicon powder 4%.The fineness of anhydrous fluorgypsum tails over 2.0% at 200 orders, and its specific surface area is 4500 ~ 8000cm
2/ g.
Above-mentioned several raw materials under drying conditions, can promptly be become the antifrost keene's cement after metering, mixing, adopt existing production technique to make the anhydrite building product antifrost keene's cement.
Embodiment 5: get anhydrous fluorgypsum 90%, compound active exciting agent 6% (transition metal sulfate, semi-hydrated gypsum and unslaked lime, the three is any proportioning), superfined flyash 4%.The fineness of anhydrous fluorgypsum tails over 2.0% at 200 orders, and its specific surface area is 4500 ~ 8000cm
2/ g.
Above-mentioned several raw materials under drying conditions, can promptly be become the antifrost keene's cement after metering, mixing.
Embodiment 6: get the dehydrated gyp-92% of artificial preparation, compound active exciting agent 5% (transition metal sulfate and calcined alunite breeze, the two is any proportioning), superfined flyash 3%.The fineness of the dehydrated gyp-of artificial preparation tails over 2.0% at 200 orders, and its specific surface area is 4500 ~ 8000cm
2/ g.
Above-mentioned several raw materials under drying conditions, can promptly be become the antifrost keene's cement after metering, mixing.
Claims (7)
1. the method for keene's cement antifrost is characterized in that being realized by following steps: 1). in anhydrite, add compound active exciting agent and suppress the filler that salt efflorescence is separated out, make the shared total weight percent of each component be:
Anhydrite 87-95, compound active exciting agent 3-8 suppresses the filler 2-5 that salt efflorescence is separated out;
2). above-mentioned raw materials can promptly become the antifrost keene's cement after metering, mixing under drying conditions.
2. the method for keene's cement antifrost according to claim 1 is characterized in that: described antifrost keene's cement can adopt existing production technique to make the anhydrite building product.
3. the method for keene's cement antifrost according to claim 1, it is characterized in that: described anhydrite can be the dehydrated gyp-of natural anhydrite, anhydrous fluorgypsum and artificial preparation, in order to improve the hydration rate of agglutinate and goods, the present invention requires anhydrite to adopt the ball mill grinding, to strengthen its surfactivity, fineness is controlled at 200 mesh screen residues and is not more than 3%, and its specific surface area is 4500 ~ 8000cm
2/ g.
4. the method for keene's cement antifrost according to claim 1, it is characterized in that: described compound active exciting agent is two or more mixtures such as calcined alunite breeze, sylvite series exciting agent, transition metal sulfate, semi-hydrated gypsum, unslaked lime, and two or more is any proportioning when mixing.
5. the method for keene's cement antifrost according to claim 1 is characterized in that: the filler that described inhibition salt efflorescence is separated out can be a kind of in metakaolin fine powder, silicon powder, the superfined flyash.
6. the method for keene's cement antifrost according to claim 5 is characterized in that: described metakaolin fine powder can be prepared from through 800 ℃ of calcinings with kaolin in 1 hour, and superfined flyash adopts the one-level ash.
7. by the resulting antifrost keene's cement of the method for the described keene's cement antifrost of claim 1, it comprises anhydrite, it is characterized in that: add compound active exciting agent, suppress the filler that salt efflorescence is separated out, the shared total weight percent of each component is:
Anhydrite 87-95, compound active exciting agent 3-8 suppresses the filler 2-5 that salt efflorescence is separated out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031254764A CN100478295C (en) | 2003-09-30 | 2003-09-30 | Anhydrite agglutinate antifrost method and antifrost anhydrite agglutinate thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031254764A CN100478295C (en) | 2003-09-30 | 2003-09-30 | Anhydrite agglutinate antifrost method and antifrost anhydrite agglutinate thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1528694A true CN1528694A (en) | 2004-09-15 |
| CN100478295C CN100478295C (en) | 2009-04-15 |
Family
ID=34285937
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031254764A Expired - Fee Related CN100478295C (en) | 2003-09-30 | 2003-09-30 | Anhydrite agglutinate antifrost method and antifrost anhydrite agglutinate thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219466A (en) * | 2011-03-23 | 2011-10-19 | 江苏省一夫新材料科技有限公司 | Keene cement for construction |
| CN106348706A (en) * | 2016-08-19 | 2017-01-25 | 中盐安徽红四方新型建材科技有限公司 | Autoclave plaster block capable of inhibiting efflorescence and preparation method thereof |
| CN107056214A (en) * | 2017-05-24 | 2017-08-18 | 湖南昌迅科技环保股份有限公司 | A kind of fluorite cream base mending mortar |
| CN111056813A (en) * | 2019-12-30 | 2020-04-24 | 湖南天越环保科技有限公司 | Thin artistic color clay with inorganic film-forming of composite water-gas hard gel structure |
-
2003
- 2003-09-30 CN CNB031254764A patent/CN100478295C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219466A (en) * | 2011-03-23 | 2011-10-19 | 江苏省一夫新材料科技有限公司 | Keene cement for construction |
| CN106348706A (en) * | 2016-08-19 | 2017-01-25 | 中盐安徽红四方新型建材科技有限公司 | Autoclave plaster block capable of inhibiting efflorescence and preparation method thereof |
| CN106348706B (en) * | 2016-08-19 | 2018-12-28 | 中盐安徽红四方新型建材科技有限公司 | Inhibit the autoclave plaster building block and preparation method of scum |
| CN107056214A (en) * | 2017-05-24 | 2017-08-18 | 湖南昌迅科技环保股份有限公司 | A kind of fluorite cream base mending mortar |
| CN107056214B (en) * | 2017-05-24 | 2019-06-18 | 湖南昌迅科技环保股份有限公司 | A kind of fluorite cream base mending mortar |
| CN111056813A (en) * | 2019-12-30 | 2020-04-24 | 湖南天越环保科技有限公司 | Thin artistic color clay with inorganic film-forming of composite water-gas hard gel structure |
| CN111056813B (en) * | 2019-12-30 | 2021-07-13 | 湖南天越环保科技有限公司 | Thin artistic color clay with inorganic film-forming of composite water-gas hard gel structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100478295C (en) | 2009-04-15 |
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Granted publication date: 20090415 Termination date: 20110930 |