CN1272274C - Magnesium oxychloride conrete slurry and preparation process thereof - Google Patents
Magnesium oxychloride conrete slurry and preparation process thereof Download PDFInfo
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- CN1272274C CN1272274C CN 200410021327 CN200410021327A CN1272274C CN 1272274 C CN1272274 C CN 1272274C CN 200410021327 CN200410021327 CN 200410021327 CN 200410021327 A CN200410021327 A CN 200410021327A CN 1272274 C CN1272274 C CN 1272274C
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- magnesium
- modifying
- magnesium chloride
- oxychloride concrete
- solidifying agent
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Abstract
The present invention provides magnesium-oxychloride concrete slurry and a preparation process thereof, which belongs to the field of chemical materials. The present invention has the technical scheme that sodium tripolyphosphate, citric acid, magnesium sulfate, boric oxide and oxalic acid are selected and are used as modifying addition agents; the selected modifying addition agents are dissolved in water, and a modifying-addition-agent water solution is formed; the modifying-addition-agent water solution is mixed with a magnesium chloride solution, and a solidifying agent containing the modifying addition agents is prepared; the solidifying agent containing the modifying addition agents and magnesium oxide in a certain proportion are mixed and are stirred, and the magnesium-oxychloride concrete slurry added with the modifying addition agents is formed; the magnesium-oxychloride concrete slurry is used for producing magnesium-oxychloride concrete building materials or other shaping articles. The magnesium-oxychloride concrete slurry produced by the prescription and in the preparation method thereof can be used for producing building components or other shaping articles having a certain structural shape in the methods of mold casting or extrusion, paste production, etc. The produced articles have the advantages of pulverization resistance, bittern prevention, moisture resistance, water resistance and deformation resistance; the present invention can be widely used for article production in the building field or other fields.
Description
Technical field
What the present invention proposed is a kind of oxychloride concrete slip of chemical material field and preparation method thereof.
Background technology
Oxychloride concrete also claims the magnesia concrete, be meant that with magnesium oxide be the physique material, with magnesium chloride solution as solidifying agent, both are mixed and made into the concrete slurry with Hardenability, by methods such as in mould, pouring into a mould, push, paste, become building slab or other typing article after making it to solidify with definite shape with functions of use.Usually the physique material that is adopted is the light-burning magnesium powder that magnesium-containing ore is fired and grinding forms, i.e. magnesium oxide.Solidifying agent adopts seawater to carry the by product hydrated magnesium chloride solution of salt.After both are mixed in proportion stirring, by chemical reaction, form magnesium hydroxide or magnesium oxychioride xln, molecular structural formula is: 3MgO.MgCl
2.11H
2O has shape-holding property and certain structure intensity, and made building slab or typing article have the physicochemical property of high-strength light.But the mode that is by chemical reaction realizes because its concrete curing is solidified, and doses and magnesium oxide chemical combination mol ratio hour when solidifying agent, and curing reaction is incomplete, and concrete building structure or article intensity are low, easily produces powder and comes off.When it cooperates mol ratio big, that is to say that solidifying agent doses when excessive, react the easy moisture absorption of remaining magnesium chloride and the halogen phenomenon occurs returning.Both of these case all can influence the intensity and the use properties of its concrete building structure or article.In order to overcome this shortcoming, people's research experiment is dosed the way of chemical modifier in concrete slurry.The modifier component of being dosed has trolamine, Sodium hexametaphosphate 99 etc. usually.Wherein trolamine plays the effect of buffering chemical reaction, makes solidifying agent slowly diffusion in slip, forms homogeneously crystallized body.The effect of Sodium hexametaphosphate 99 is that calcium chloride that is contained in the magnesium chloride solution or heavy metal salt are produced the effect of condensing, and makes magnesium chloride solution obtain to purify the effect of purifying.The adding of these two kinds of additives can improve the condensation cure effect of oxychloride concrete, makes building slab product or other typing article reduce the phenomenon that efflorescence occurs and return halogen.But be not easy to reach physical and chemical index preferably.And additive of being dosed and magnesium chloride solidifying agent join in the magnesium oxide respectively jointly, be not easy mixing and stirring, thereby, though added property-modifying additive, little to building slab or the existing shortcoming improvement effect of other typing article that the oxychloride concrete slip is made.
Summary of the invention
The present invention is directed to the existing shortcoming that contains the oxychloride concrete slip of properties-correcting agent, propose a kind of oxychloride concrete slip and preparation method thereof.
Its summary of the invention is: the oxychloride concrete slip is made of A and two kinds of components mixing of B.
A, content of magnesia are 300～800 kilograms in 60～95% magnesium oxide;
100.5～302.5 kilograms in B, magnesium chloride solidifying agent; Described magnesium chloride solidifying agent is to be dissolved in 100.5～302.5 kilograms of mixed getting of the property-modifying additive aqueous solution that is obtained in 10～20 kg of water and the aqueous solution that contains magnesium chloride 20～35% for 0.1～0.5 kilogram by 0.1～0.5 kilogram of tripoly phosphate sodium STPP, 0.1～0.5 kilogram of citric acid, 0.1～0.5 kilogram in sal epsom, 0.1～0.5 kilogram of boron oxide and oxalic acid.
The preparation method of oxychloride concrete slip is:
(1), in water, dissolves tripoly phosphate sodium STPP, citric acid, sal epsom, boron oxide, oxalic acid and make the property-modifying additive aqueous solution;
(2), the described property-modifying additive aqueous solution and magnesium chloride brine are mixed and made into the magnesium chloride solidifying agent;
(3), described magnesium chloride solidifying agent and magnesium oxide are mixed and made into the oxychloride concrete slip.
By the present invention's prescription and preparation method thereof made oxychloride concrete slip, can have the typing article of certain structural shape by method production building slabs such as in mould, pouring into a mould or push, paste or other.Made article have anti-efflorescence, return halogen, and the advantage of wet, the water-fast and resistance to deformation of moisture resistance can be widely used in the production of building field or other domain entities article.
Embodiment
Property-modifying additive preparation and cooperation ratio are:
0.1～0.5 kilogram of tripoly phosphate sodium STPP,
0.1～0.5 kilogram of citric acid,
0.1～0.5 kilogram in sal epsom,
0.1～0.5 kilogram of boron oxide,
0.1～0.5 kilogram of oxalic acid.
Water: 10～20 kilograms,
Selected property-modifying additive is dissolved in the water after by the selected amount weighing, constitutes the property-modifying additive aqueous solution.
Content of magnesium chloride is selected the scope with consumption:
Contain 100～300 kilograms of magnesium chloride 20～35% aqueous solution.
Contain the magnesium chloride solidifying agent preparation of property-modifying additive:
Getting property-modifying additive doses 100.5～302.5 kilograms and contains to mix in 20～35% magnesium chloride brines and constitute the magnesium chloride solidifying agent contain property-modifying additive.
The preparation of oxychloride concrete slip:
Get 300～800 kilograms in the magnesium oxide that contains magnesium oxide amount 60～95%, add in 100.5～302.5 kilograms of magnesium chloride solidifying agent that contain property-modifying additive, stir and make the oxychloride concrete slip.
In mould, after the solidifying and setting, the demoulding becomes oxychloride concrete building slab or other typing article with the oxychloride concrete slip casting.
A kind of embodiment explanation:
Property-modifying additive preparation and cooperation ratio are:
0.5 kilogram of tripoly phosphate sodium STPP,
0.1 kilogram of citric acid,
0.5 kilogram in sal epsom,
0.3 kilogram of boron oxide,
0.1 kilogram of oxalic acid.
Water: 15 kilograms,
Selected above-mentioned property-modifying additive is added up to 1.5 kilograms be dissolved in 15 kg of water, constitute 16.5 kilograms of property-modifying additive aqueous solution.
Content of magnesium chloride is selected the scope with consumption:
Contain 200 kilograms of magnesium chloride 30% solution.
Contain the magnesium chloride solidifying agent preparation of property-modifying additive:
Getting the property-modifying additive aqueous solution doses for 16.5 kilograms to contain to mix in 30% magnesium chloride, the 200 kg of water solution and constitutes 216.5 kilograms in magnesium chloride solidifying agent containing property-modifying additive.
The preparation of oxychloride concrete slip:
Get 500 kilograms in the magnesium oxide that contains magnesium oxide amount 85%, add in 216.5 kilograms of magnesium chloride solidifying agent that contain property-modifying additive, stir and make the oxychloride concrete slip.
In mould, after the solidifying and setting, the demoulding becomes oxychloride concrete building slab or other typing article with the oxychloride concrete slip casting.
The effect of each component in the additive in the oxychloride concrete slip solidifies is as follows:
Tripoly phosphate sodium STPP: softening water also makes calcium in the magnesium chloride and other high valent metal ion flocculation sediment, plays the shock absorption of combination reaction simultaneously.
Citric acid: in and the free alkali metal ion, improve the reactive behavior of magnesium chloride.
Sal epsom: play effect with the magnesium oxide combination reaction jointly with magnesium chloride.
Boron oxide: play the effect of the commissure of magnesium oxide and magnesium chloride, simultaneously, also can play the effect of little foaming and the effect that improves refractoriness.
Oxalic acid: eliminate the effect of separating out frosting of reaction process calcium ion.
The mixing of above additive can also be played anti-water and prevent the effect of the moisture absorption, can improve the water-fast and protection against the tide of the formed cured product of concrete slurry and the effect of resistance to deformation.
Claims (2)
1, a kind of oxychloride concrete slip is characterized in that: be made of A and two kinds of components mixing of B:
A, content of magnesia are 300～800 kilograms in 60～95% magnesium oxide;
100.5～302.5 kilograms in B, magnesium chloride solidifying agent; Described magnesium chloride solidifying agent is to be dissolved in 100.5～302.5 kilograms of mixed getting of the property-modifying additive aqueous solution that is obtained in 10～20 kg of water and the aqueous solution that contains magnesium chloride 20～35% for 0.1～0.5 kilogram by 0.1～0.5 kilogram of tripoly phosphate sodium STPP, 0.1～0.5 kilogram of citric acid, 0.1～0.5 kilogram in sal epsom, 0.1～0.5 kilogram of boron oxide and oxalic acid.
2, the preparation method of a kind of oxychloride concrete slip as claimed in claim 1 is characterized in that:
(1), in water, dissolves tripoly phosphate sodium STPP, citric acid, sal epsom, boron oxide, oxalic acid and make the property-modifying additive aqueous solution;
(2), the described property-modifying additive aqueous solution and magnesium chloride brine are mixed and made into the magnesium chloride solidifying agent;
(3), described magnesium chloride solidifying agent and magnesium oxide are mixed and made into the oxychloride concrete slip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021327 CN1272274C (en) | 2004-03-02 | 2004-03-02 | Magnesium oxychloride conrete slurry and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021327 CN1272274C (en) | 2004-03-02 | 2004-03-02 | Magnesium oxychloride conrete slurry and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1559961A CN1559961A (en) | 2005-01-05 |
| CN1272274C true CN1272274C (en) | 2006-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410021327 Expired - Fee Related CN1272274C (en) | 2004-03-02 | 2004-03-02 | Magnesium oxychloride conrete slurry and preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495645A (en) * | 2016-10-19 | 2017-03-15 | 台州创泰新型建材有限公司 | A kind of high intensity room watt and its manufacturing process |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334030C (en) * | 2005-02-18 | 2007-08-29 | 王佳水 | Fire proofing board made of white marble stone powder and its manufactruring process |
| CN103058562B (en) * | 2013-01-25 | 2015-07-15 | 沈阳建筑大学 | Multifunctional auxiliary agent for magnesium oxychloride cement foamed concrete |
| CN104529371A (en) * | 2014-11-26 | 2015-04-22 | 王新荣 | Anticorrosive mortar and preparation method thereof |
| CN108774043B (en) * | 2018-07-27 | 2021-07-20 | 安溪中科镁基科技有限公司 | High-doping-ratio red mud building material |
-
2004
- 2004-03-02 CN CN 200410021327 patent/CN1272274C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495645A (en) * | 2016-10-19 | 2017-03-15 | 台州创泰新型建材有限公司 | A kind of high intensity room watt and its manufacturing process |
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| Publication number | Publication date |
|---|---|
| CN1559961A (en) | 2005-01-05 |
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Granted publication date: 20060830 Termination date: 20100302 |