CN1239083A - Technology for manufacturing magnesia cover of manhole - Google Patents
Technology for manufacturing magnesia cover of manhole Download PDFInfo
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- CN1239083A CN1239083A CN 98102262 CN98102262A CN1239083A CN 1239083 A CN1239083 A CN 1239083A CN 98102262 CN98102262 CN 98102262 CN 98102262 A CN98102262 A CN 98102262A CN 1239083 A CN1239083 A CN 1239083A
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- raw material
- manufacturing process
- magnesium
- cover
- magnesia
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
- C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
A technology for manufacturing magnesia cover of manhole includes mixing primary raw materials with secondary raw materials and casting. Said primary raw materials include magnesium oxide, magnesium chloride, and quartz sand. Said secondary raw materials include magnesium sulfate (29.75-38.015 Wt.%), ferrous chloride (38.015-46.28), methyl silica oil (4.96-5.79), ethyl silicate (1.65-2.48) and composite reagent (13.22-19.84). Said composite reagent contains iron ions, aluminium ions, SiO2 colloid, phosphoric acid, tributyl phosphate, sodium fluosilicate and calgon. Its advantages are high bending strength (9.8-10.75 MPa) and compression strength (55-65 MPa) and high load power (30T).
Description
The present invention relates to a kind of manufacturing process of magnesia cover of manhole, belong to the manufacturing technology of magnesite building material made.
The development research of magnesite building material made is there to be the history of decades, but magnesite product " anti-alkali " does not overcome yet, and the magnesite product that causes thus " moisture absorption-anti-alkali-weathering " has influenced the intensity of magnesite product greatly, shorten work-ing life, limited the use range of magnesite product; On the other hand, widely used casting iron well lid in the urban construction facility, though the intensity height, its cost is also high, is also very easily stolen by the lawless person, the high strength magnesia cover of manhole replacement casting iron well lid that therefore, overcomes " anti-alkali " is the task of top priority.
Purpose of the present invention is exactly in order to overcome above-mentioned weak point of the prior art, and the manufacturing process of a kind of nothing " anti-alkali ", magnesia cover of manhole that intensity is high is provided.
The object of the present invention is achieved like this: raw material is made of main raw material and auxiliary material, main raw material comprises magnesium oxide, magnesium chloride, quartz sand, raw material formation and weight percent thereof are sal epsom 29.75-38.015, iron protochloride 38.015-46.28, methyl-silicone oil 4.96-5.79, ethyl silicate 1.65-2.48, composite reagent 13.22-19.84 in the auxiliary material, the raw material of composite reagent constitutes and comprises that the weight percent that iron ion, aluminum ion, colloid silica, phosphoric acid, tbp, Sodium Silicofluoride, Sodium hexametaphosphate 99, auxiliary material account for main raw material is 0.5-0.7.Main raw material mixes stirring back cast molding with auxiliary material.
The present invention compared with prior art has the following advantages and positively effect:
1, raw material has added the auxiliary material that is made of optimum chemical reagent compatibility in constituting, sal epsom in this auxiliary material plays modulator effect, iron(ic) chloride plays catalyst, condensing agent effect, methyl-silicone oil plays gram alkali, water-repellent agent effect, the composite reagent of being made up of iron ion etc. works breaking, gram alkali, the effect of hardness stiffeners, and ethyl silicate works the infusion effect of cutting.
2, the magnesia cover of manhole of making by technology of the present invention, intensity height, strong, the long service life of ageing-resistant, anticorrosive, freeze proof, compressive resistance, folding strength (MPa) after tested: freeze preceding 10.75, freeze back 9.8, ultimate compression strength (MAa): freeze preceding 55, freeze back 65, load performance test: the 30T automobile comes and goes and rolls 10 times and do not damage.
Below in conjunction with embodiment in detail the present invention is described in detail.
Main raw material formation and weight percent thereof are magnesium oxide 47.62, magnesium chloride 28.57, quartz sand 23.81 in the technology of the present invention, require simultaneously that magnesian granularity is at least that 160 orders, magnesium content are higher than 90%, calcium oxide content is lower than 3%, loss on ignition is lower than 5%, the magnesium chloride magnesium content is higher than 45%, sodium chloride content is lower than 1%, KCE content is lower than 1%, blend magnesium chloride " ripple magnesium meter " degree and be summers 26 degree, spring and autumn 28-29 degree, winter 31-32 degree, quartz sand contains that the soil amount is lower than 1%, granularity is the 40-80 order.
The raw material of auxiliary material formation and weight percent thereof are sal epsom 29.75-38.015, iron protochloride 38.015-46.28, methyl-silicone oil 4.96-5.79, ethyl silicate 1.65-2.48, composite reagent 13.22-19.84 in the technology of the present invention, if by this formula range preparation 605g auxiliary material, can there be in the table 16 groups specifically to fill a prescription.
Table 1
| The auxiliary material title | First group | Second group | The 3rd group | The 4th group | The 5th group | The 6th group | ||||||
| Per-cent | Weight | Per-cent | Weight | Per-cent | Weight | Per-cent | Weight | Per-cent | Weight | Per-cent | Weight | |
| Sal epsom | 29.75 | ?180 | ?38.015 | ?230 | ?33.05 | ?200 | ?34.71 | ?210 | ?31.40 | ?190 | ?33.88 | ?205 |
| Iron protochloride | 46.28 | ?280 | ?38.015 | ?230 | ?42.98 | ?260 | ?44.63 | ?270 | ?41.32 | ?250 | ?43.80 | ?265 |
| Methyl-silicone oil | 4.96 | ?30 | ?5.79 | ?35 | ?5.29 | ?32 | ?5.29 | ?32 | ?5.29 | ?32 | ?5.29 | ?32 |
| Ethyl silicate | 248 | ?15 | ?1.65 | ?10 | ?2.15 | ?13 | ?2.15 | ?13 | ?2.15 | ?13 | ?2.15 | ?13 |
| Composite reagent | 16.53 | ?100 | ?16.53 | ?100 | ?16.53 | ?100 | ?13.22 | ?80 | ?19.84 | ?120 | ?14.88 | ?90 |
| Add up to | 100 | ?605 | ?100 | ?605 | ?100 | ?605 | ?100 | ?605 | ?100 | ?605 | ?100 | ?605 |
The raw material of composite reagent formation comprises iron ion, aluminum ion, colloid silica, phosphoric acid, tbp, Sodium Silicofluoride, Sodium hexametaphosphate 99 in the technology of the present invention; The weight percent of combination is iron ion 17.39, aluminum ion 17.39, colloid silica 4.35, phosphoric acid 26.09, tbp 17.39, Sodium Silicofluoride 8.70, Sodium hexametaphosphate 99 8.70.By this formulated 80g, 90g, 100g, 120g composite reagent, it is as shown in table 2 specifically to fill a prescription.
Table 2
| Composite reagent | Iron ion | Aluminum ion | Colloid silica | Phosphoric acid | Tbp | Sodium Silicofluoride | Sodium hexametaphosphate 99 |
| ????80 | ?13.91 | ?13.91 | ????3.48 | ?20.87 | ??13.91 | ??6.96 | ?????6.96 |
| ????90 | ?15.65 | ?15.65 | ????3.91 | ?23.48 | ??15.65 | ??7.83 | ?????7.83 |
| ????100 | ?17.39 | ?17.39 | ????4.35 | ?26.09 | ??17.39 | ??8.70 | ?????8.70 |
| ????120 | ?20.87 | ?20.87 | ????5.22 | ?31.31 | ??20.87 | ??10.44 | ?????10.44 |
To account for the weight percent of main raw material be 0.5-0.7 to auxiliary material in the technology of the present invention.By this ratio range, if auxiliary material is got 605g, main raw material accounts for 0.5%, 0.6%, 0.7% of major ingredient by auxiliary material respectively and calculates, and then main raw material should be got 121kg, 101kg, 86kg respectively.Because main raw material constitutes and weight percent is magnesium oxide 47.62, magnesium chloride 28.57, quartz sand 23.81, then magnesium oxide is got 57.62kg, 48.10kg, 40.95kg respectively, magnesium chloride is got 34.60kg, 28.86kg, 24.57kg respectively, and quartz sand is got 28.81kg, 24.05kg, 20.48kg respectively.
With mixing with main raw material after the boiling water dilution, above-mentioned 605g auxiliary material can add boiling water 2.5kg to auxiliary material again earlier in the technology of the present invention, 15 ℃ of whipping temps, casting then, at least 20 ℃ of solidification values, isothermal curing 30-32 ℃, 7 days isothermal curing time.Generally reach the highest in 28 days intensity of outdoor placement.
By technology of the present invention also can make with the same desired strength of well lid high as magnesite building material mades such as Keelof green houses.
Claims (8)
1, a kind of manufacturing process of magnesia cover of manhole, main raw material comprises magnesium oxide, magnesium chloride, quartz sand, it is characterized in that:
Raw material formation and weight percent thereof are sal epsom 29.75-38.015, iron protochloride 38.015-46.28, methyl-silicone oil 4.69-5.79, ethyl silicate 1.65-2.48, composite reagent 13.22-19.84 in a, the auxiliary material;
The raw material formation of b, composite reagent comprises iron ion, aluminum ion, colloid silica, phosphoric acid, tbp, Sodium Silicofluoride, Sodium hexametaphosphate 99;
The weight percent that c, auxiliary material account for main raw material is 0.5-0.7.
2, the manufacturing process of magnesia cover of manhole according to claim 1 is characterized in that the weight percent that raw material constitutes in the composite reagent is iron ion 17.39, aluminum ion 17.39, colloid silica 4.35, phosphoric acid 26.09, tbp 17.39, Sodium Silicofluoride 8.70, Sodium hexametaphosphate 99 8.70.
3, the manufacturing process of magnesia cover of manhole according to claim 1 is characterized in that main raw material constitutes and weight percent is magnesium oxide 47.62, magnesium chloride 28.57, quartz sand 23.81.
4, the manufacturing process of magnesia cover of manhole according to claim 1 is characterized in that magnesian granularity is at least that 160 orders, magnesium content are higher than 90%, calcium oxide content is lower than 3%, loss on ignition is lower than 5%.
5, the manufacturing process of magnesia cover of manhole according to claim 1 is characterized in that the magnesium chloride magnesium content is higher than 45%, sodium chloride content is lower than 1%, KCE content is lower than 1%.
6, the manufacturing process of magnesia cover of manhole according to claim 1 or 5 is characterized in that blending magnesium chloride " ripple magnesium meter " degree and is summers 26 degree, spring and autumn 28-29 degree, winter 31-32 degree.
7, the manufacturing process of magnesia cover of manhole according to claim 1 is characterized in that quartz sand contains that soil amount is lower than 1%, granularity is the 40-80 order.
8, the manufacturing process of magnesia cover of manhole according to claim 1 is characterized in that auxiliary material mixes with main raw material with boiling water dilution back, 15 ℃ of whipping temps, at least 20 ℃ of solidification values, isothermal curing 30-32 ℃, 7 days isothermal curing time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98102262 CN1239083A (en) | 1998-06-15 | 1998-06-15 | Technology for manufacturing magnesia cover of manhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98102262 CN1239083A (en) | 1998-06-15 | 1998-06-15 | Technology for manufacturing magnesia cover of manhole |
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| CN1239083A true CN1239083A (en) | 1999-12-22 |
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| CN 98102262 Pending CN1239083A (en) | 1998-06-15 | 1998-06-15 | Technology for manufacturing magnesia cover of manhole |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6395084B1 (en) * | 1999-02-16 | 2002-05-28 | James L. Priest | Platelet/flake magnesium oxide, methods of making the same, and magnesium oxychloride/oxysulfate ceramic materials |
| CN100354480C (en) * | 2005-08-04 | 2007-12-12 | 卫华 | Magnesite composite material piping shaft cover and its production process |
| CN101973720A (en) * | 2010-10-18 | 2011-02-16 | 武汉钢铁(集团)公司 | Magnesium oxychloride cement aggregate and preparation method thereof |
| CN103043993A (en) * | 2012-12-28 | 2013-04-17 | 河南省盐业总公司 | Method for manufacturing decorative base material taking sodium chloride particles as main material |
| CN107352948A (en) * | 2017-08-22 | 2017-11-17 | 智慧超洋建设工程股份有限公司 | A kind of magnesite exterior wall fireproof decorative panel |
-
1998
- 1998-06-15 CN CN 98102262 patent/CN1239083A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6395084B1 (en) * | 1999-02-16 | 2002-05-28 | James L. Priest | Platelet/flake magnesium oxide, methods of making the same, and magnesium oxychloride/oxysulfate ceramic materials |
| CN100354480C (en) * | 2005-08-04 | 2007-12-12 | 卫华 | Magnesite composite material piping shaft cover and its production process |
| CN101973720A (en) * | 2010-10-18 | 2011-02-16 | 武汉钢铁(集团)公司 | Magnesium oxychloride cement aggregate and preparation method thereof |
| CN103043993A (en) * | 2012-12-28 | 2013-04-17 | 河南省盐业总公司 | Method for manufacturing decorative base material taking sodium chloride particles as main material |
| CN107352948A (en) * | 2017-08-22 | 2017-11-17 | 智慧超洋建设工程股份有限公司 | A kind of magnesite exterior wall fireproof decorative panel |
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