CN105036578A - Magnesium oxychloride cement and manufacturing technique thereof - Google Patents
Magnesium oxychloride cement and manufacturing technique thereof Download PDFInfo
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- CN105036578A CN105036578A CN201510509198.0A CN201510509198A CN105036578A CN 105036578 A CN105036578 A CN 105036578A CN 201510509198 A CN201510509198 A CN 201510509198A CN 105036578 A CN105036578 A CN 105036578A
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- oxychloride cement
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Abstract
The invention provides a magnesium oxychloride cement which is prepared from the following raw materials in parts by weight: 50 parts of magnesium chloride, 100 parts of magnesium oxide, 170 parts of water and 10 parts of additive. The additive comprises phosphate, ferroaluminate, aluminate and iron salt, wherein the phosphate is sodium polyphosphate, the ferroaluminate is tetracalcium ferroaluminate, the aluminate is sodium aluminate, and the iron salt is polyferric sulfate. The magnesium oxychloride cement also comprises 7 parts by weight of gelatinizer, wherein the gelatinizer comprises magnesium hydroxide and a hardening agent; and the hardening agent comprises a magnesium oxide-magnesium chloride-water ternary compound crystalline salt phase double salt. The magnesium oxychloride cement is used for solving the problem that the water-resistant hardened product in the prior art can not easily lose strength in water, has low strength loss rate and can not easily crack.
Description
Technical field
The invention belongs to material of construction and make field, particularly a kind of magnesia oxychloride cement and magnesia oxychloride cement manufacture craft.
Background technology
Magnesia oxychloride cement is jointing compound with the light burnt powder of calcined magnesite stone gained or the ashes (main component is MgO) of low temperature calcination rhombspar gained, with water-soluble magnesium salts such as magnesium chloride hexahydrates (MgCL26H2O) for blender, then add the hardening of cement body that water formed.
Magnesia oxychloride cement can harden at normal temperatures and pressures quickly, forms the larger and rostone that hardness is very high of fragility.Utilize its this sclerosis gelling, various material of construction and finishing material can be processed into, have broad application prospects.
But, the poor water resistance of an existing magnesia oxychloride cement, its hardenite can lose intensity gradually in water, and loss of strength rate can reach 60 ~ 80%; Two easily there is hardenite spalling: it before this tiny crack occurred, and tiny crack slowly expands to be deepened, and makes goods slowly cracked, finally becomes a pile fragment, scrap completely.
Therefore, need now a kind of magnesia oxychloride cement and magnesia oxychloride cement manufacture craft badly, strengthen its water tolerance, hardenite also not easily loses intensity in water, and loss of strength rate is low, and it is cracked that hardenite not easily occurs, and extends its work-ing life.
Summary of the invention
The present invention proposes a kind of magnesia oxychloride cement and magnesia oxychloride cement manufacture craft, solves the problem of poor water resistance and easily generation hardenite spalling in prior art.
The invention provides a kind of magnesia oxychloride cement on the one hand, the weight proportion of its raw material is:
As one preferred embodiment, described admixture comprises phosphoric acid salt, ferro-aluminate and aluminate.
As one preferred embodiment, described admixture also comprises molysite.
As one preferred embodiment, described phosphoric acid salt is sodium polyphosphate, and described ferro-aluminate is tetracalcium aluminoferrite, and described aluminate is sodium aluminate, and described molysite is bodied ferric sulfate.
As one preferred embodiment, the weight percent of the raw material of described admixture is:
As one preferred embodiment, also comprise the jelling agent that weight proportion is 7 parts, described jelling agent comprises magnesium hydroxide.
As one preferred embodiment, also comprise stiffening agent, described stiffening agent comprises magnesium oxide-magnesium chloride-water ternary compound crystallization salt face double salt, and the weight proportion of its raw material is:
Magnesium oxide: 100 parts;
Magnesium chloride: 50 parts;
Water: 140 parts.
On the other hand, the invention provides a kind of magnesia oxychloride cement manufacture craft, comprise step:
S101: add 70 parts, water after adding 50 parts, magnesium chloride, carry out stir process 5-20 minute;
S201: add 70 parts, water after adding 100 parts, magnesium oxide, carry out stir process 10-30 minute;
S301: after adding admixture 10 parts, carry out stir process 5-20 minute;
S401: carry out filling process.
As one preferred embodiment, after step S301, be also provided with step S302: add the jelling agent that weight proportion is 7 parts, carry out stir process 5-20 minute, jelling agent adopts magnesium hydroxide.
As one preferred embodiment, also step S501 is provided with: add the stiffening agent that weight proportion is 5 parts after step S401, carry out stir process 5-20 minute, stiffening agent adopts magnesium oxide-magnesium chloride-water ternary compound crystallization salt face double salt, the mode adding stiffening agent is adopted to realize solidification treatment, when adding stiffening agent hours, chloro-magnesium cement realizes semicure process, carries out 3 day time and carry out all solidstate after completing semicure.
After have employed technique scheme, the invention has the beneficial effects as follows:, one by rationally arranging weight ratio, make the discarded batching of reaction remnants less, two make reaction compare fully by stirring, three improve the performance of magnesia oxychloride cement by interpolation admixture, cement particle can be disperseed fully, water consumption greatly reduces, cement potential is not fully exerted, cause Behavior of Hardened Cement Paste comparatively fine and close, pore structure and interface region microstructure are well improved, thus the physical and mechanical property of magnesia oxychloride cement is greatly improved, no matter be watertightness, or chlorine ion binding capacity, carbonization, resisting erosion of sulfate, and anti-impact, the each side such as wear resisting property are all better than traditional cements, not only increase intensity, improve workability, the weather resistance of chlorine oxygen magnesium cement can also be improved, there is high application property, high strength, the feature of high-durability.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is chlorine chloro-magnesium cement fabrication processing figure of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Present embodiment provides a kind of magnesia oxychloride cement, and the weight proportion of its raw material is:
In present embodiment, admixture comprises phosphoric acid salt, ferro-aluminate, aluminate and molysite, concrete phosphoric acid salt is sodium polyphosphate, described ferro-aluminate is tetracalcium aluminoferrite, described aluminate is sodium aluminate, described molysite is bodied ferric sulfate, and the weight percent of the various salt of admixture is: phosphoric acid salt: 22%; Ferro-aluminate: 30%; Aluminate: 25%; Molysite: 23%.In order to make the glue tackiness of the present embodiment magnesia oxychloride cement better, the water consumption of magnesia oxychloride cement can be reduced. or do not increase the degree of mobilization that water consumption just can increase magnesia oxychloride cement, the time of coagulation of whole magnesia oxychloride cement, reduce slump-loss simultaneously, increase the pumpability of pumping magnesia oxychloride cement, also comprise and draw together the jelling agent that weight proportion is 7 parts, described jelling agent comprises magnesium hydroxide; In order to improve the hardness of present embodiment oxychloride cement, reduce bleeding and segregation. improve workability and the water resistant property eluriated, also comprise the stiffening agent that weight proportion is 5 parts, stiffening agent is magnesium oxide-magnesium chloride-water ternary compound crystallization salt face double salt, and its raw material weight proportioning is: magnesium oxide: 100 parts; Magnesium chloride: 50 parts; Water: 140 parts; In order to compensate for shrinkage, reduce to expand, can also swelling agent be added.
By rationally arranging the weight proportion of magnesium chloride, magnesium oxide, water and admixture in this chlorine chloro-magnesium cement, can be shaping fast, and adding suitable jelling agent magnesium oxide makes the colloidality of cement more desirable, and stiffening agent magnesium oxide-magnesium chloride-water ternary compound crystallization salt face double salt, the hardness of cement is met the demands.
As shown in Figure 1, the specific embodiment of the invention also provides a kind of magnesia oxychloride cement manufacture craft, comprises step: S101: add 70 parts, water after adding 50 parts, magnesium chloride, carry out stir process 5-20 minute; S201: add 70 parts, water after adding 100 parts, magnesium chloride, carry out stir process 10-30 minute; S301: carry out stir process 5-20 minute after adding admixture 10 parts; S401: carry out filling process, also step S501 is provided with: add the stiffening agent that weight proportion is 5 parts after step S401, carry out stir process 5-20 minute, stiffening agent adopts magnesium oxide-magnesium chloride-water ternary compound crystallization salt face double salt, the mode adding stiffening agent is adopted to realize solidification treatment, when adding stiffening agent hours, chloro-magnesium cement realizes semicure process, carries out 3 day time and carry out all solidstate after completing semicure.。Consider reaction effect and ageing process, in step S101, the time of stir process is 10 minutes, and in step S201, the time controling of stir process was at 20 minutes, and in step S301, the time of stir process is 10 minutes.In addition in order to make effect more desirable, the form that solidification treatment can add stiffening agent realizes, and treatment time 1 hours realizes semicure, needs 3 day time to carry out all solidstate after semicure.
This magnesia oxychloride cement manufacture craft, one by rationally arranging weight ratio, make the discarded batching of reaction remnants less, two make reaction compare fully by stirring, three improve the performance of magnesia oxychloride cement by interpolation admixture, cement particle can be disperseed fully, water consumption greatly reduces, cement potential is not fully exerted, cause Behavior of Hardened Cement Paste comparatively fine and close, pore structure and interface region microstructure are well improved, thus the physical and mechanical property of magnesia oxychloride cement is greatly improved, no matter be watertightness, or chlorine ion binding capacity, carbonization, resisting erosion of sulfate, and anti-impact, the each side such as wear resisting property are all better than traditional cements, not only increase intensity, improve workability, the weather resistance of chlorine oxygen magnesium cement can also be improved, there is high application property, high strength, the feature of high-durability.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a magnesia oxychloride cement, is characterized in that, the weight proportion of its raw material is:
2. magnesia oxychloride cement according to claim 1, is characterized in that, described admixture comprises phosphoric acid salt, ferro-aluminate and aluminate.
3. magnesia oxychloride cement according to claim 2, is characterized in that, described admixture also comprises molysite.
4. magnesia oxychloride cement according to claim 3, is characterized in that, the phosphoric acid salt in described admixture is sodium polyphosphate, and described ferro-aluminate is tetracalcium aluminoferrite, and described aluminate is sodium aluminate, and described molysite is bodied ferric sulfate.
5. magnesia oxychloride cement according to claim 4, is characterized in that, the weight percent of the raw material of described admixture is:
6. according to the magnesia oxychloride cement that claim 1 is stated, it is characterized in that, also comprise the jelling agent that weight proportion is 7 parts, described jelling agent comprises magnesium hydroxide.
7. magnesia oxychloride cement according to claim 1, is characterized in that, also comprises the stiffening agent that weight proportion is 5 parts, and described stiffening agent comprises magnesium oxide-magnesium chloride-water ternary compound crystallization salt face double salt, and the weight proportion of its raw material is:
Magnesium oxide: 100 parts;
Magnesium chloride: 50 parts;
Water: 140 parts.
8. a magnesia oxychloride cement manufacture craft, is characterized in that, comprises step:
S101: add 70 parts, water after adding 50 parts, magnesium chloride, carry out stir process 5-20 minute;
S201: add 70 parts, water after adding 100 parts, magnesium oxide, carry out stir process 10-30 minute;
S301: carry out stir process 5-20 minute after adding admixture 10 parts;
S401: carry out filling process.
9. magnesia oxychloride cement manufacture craft according to claim 8, is characterized in that, after described step S301, be also provided with step S302: add the jelling agent that weight proportion is 7 parts, carry out stir process 5-20 minute.
10. the magnesia oxychloride cement manufacture craft of deuteron according to Claim 8, is characterized in that, after described step S401, be also provided with S501: add the stiffening agent that weight proportion is 5 parts, carry out stir process 5-20 minute.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347773A (en) * | 2015-11-30 | 2016-02-24 | 中国科学院青海盐湖研究所 | Magnesium oxychloride cement suitable for being used in winter and preparation method thereof |
| CN110183125A (en) * | 2019-06-15 | 2019-08-30 | 北京林业大学 | A kind of high-strength quick-solidifying, low energy consumption chlorine oxygen magnesium inorganic gel materials and preparation method |
| CN114590933A (en) * | 2022-01-19 | 2022-06-07 | 国能朗新明南京环保科技有限公司 | Method for processing grinding blocks by desulfurization slurry ion removal and concentrated solution resource preparation magnesium chloride cement method |
Citations (3)
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| CN1034912A (en) * | 1988-02-10 | 1989-08-23 | 湖南大学 | Magnesia oxychloride cement that has excellent water-resistance and magnesite concrete |
| CN101250062A (en) * | 2008-03-12 | 2008-08-27 | 李锦富 | Magnesium cement fireproof board having excellent water-resistance and preparation thereof |
| CN101293748A (en) * | 2007-04-25 | 2008-10-29 | 天津航达建材有限公司 | Light composite internal partition plate |
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2015
- 2015-08-18 CN CN201510509198.0A patent/CN105036578A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034912A (en) * | 1988-02-10 | 1989-08-23 | 湖南大学 | Magnesia oxychloride cement that has excellent water-resistance and magnesite concrete |
| CN101293748A (en) * | 2007-04-25 | 2008-10-29 | 天津航达建材有限公司 | Light composite internal partition plate |
| CN101250062A (en) * | 2008-03-12 | 2008-08-27 | 李锦富 | Magnesium cement fireproof board having excellent water-resistance and preparation thereof |
Non-Patent Citations (2)
| Title |
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| 外加剂;杨杨等;《土木工程材料》;武汉大学出版社;20140630;第3页 * |
| 杨杨等: "《土木工程材料》", 30 June 2014, 武汉大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347773A (en) * | 2015-11-30 | 2016-02-24 | 中国科学院青海盐湖研究所 | Magnesium oxychloride cement suitable for being used in winter and preparation method thereof |
| CN105347773B (en) * | 2015-11-30 | 2018-04-13 | 中国科学院青海盐湖研究所 | A kind of magnesia oxychloride cement of suitable use in winter and preparation method thereof |
| CN110183125A (en) * | 2019-06-15 | 2019-08-30 | 北京林业大学 | A kind of high-strength quick-solidifying, low energy consumption chlorine oxygen magnesium inorganic gel materials and preparation method |
| CN110183125B (en) * | 2019-06-15 | 2022-03-15 | 北京林业大学 | High-strength quick-setting low-energy-consumption magnesium oxychloride inorganic gel material and preparation method thereof |
| CN114590933A (en) * | 2022-01-19 | 2022-06-07 | 国能朗新明南京环保科技有限公司 | Method for processing grinding blocks by desulfurization slurry ion removal and concentrated solution resource preparation magnesium chloride cement method |
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Application publication date: 20151111 |