CN1792923A - Process for preparing microcrystal glass ceramic by concrete sludge - Google Patents
Process for preparing microcrystal glass ceramic by concrete sludge Download PDFInfo
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- CN1792923A CN1792923A CN 200510045148 CN200510045148A CN1792923A CN 1792923 A CN1792923 A CN 1792923A CN 200510045148 CN200510045148 CN 200510045148 CN 200510045148 A CN200510045148 A CN 200510045148A CN 1792923 A CN1792923 A CN 1792923A
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- prepare
- concrete sludge
- glass ceramics
- devitrified glass
- insulation
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Abstract
A process for preparing glass ceramics from concrete sludge includes such steps as mixing concrete sludge (65-85%) with additive (15-35%), preparing basic glass by high-temp smelting method, and heat treating. It has high resistance to abrading and chemical corrosion and no secondary pollution.
Description
Technical field
The present invention relates to the comprehensive utilization field of concrete sludge, relate in particular to and utilize concrete sludge to prepare the glass-ceramic field.
Background technology
Along with the quickening of China's rapid development of economy and urbanization speed, the speed that infrastructure construction relevant with concrete structure and town house etc. are built is also accelerated thereupon, produces a large amount of discarded concrete buildings sludges thus.Under normal conditions, for concrete sludge, people generally get its landfill over.Data shows that concrete sludge has become one of important source of municipal solid wastes.According to statistics: China's solid waste reached 1,000,000,000 tons in 1988, and the solid waste storage in existing more than 30 city, the whole nation is above 1,000 ten thousand tons.Because concrete itself is high alkaloid substance, has strong basicity, will unavoidably pollute soil by simply burying treatment process, will can take a large amount of soils undoubtedly simultaneously.Effective processing and utilization to solid waste become problem demanding prompt solution.Therefore near Study on Problems of early carrying out relevant concrete sludge processing changes traditional processing mode of simply burying, and in pollution abatement, turns waste into wealth, and aspects such as saving limited resources all have very important significance.Utilize concrete sludge to prepare ceramic material of microcrystalline glass and provide a practicable approach for effectively utilizing the concrete solid waste.
Devitrified glass ceramics is a kind of type material that occurs the 1950's, and it has the over-all properties of glass and pottery simultaneously.Devitrified glass ceramics is harder, lighter than aluminium than high carbon steel, and physical strength is bigger more than 6 times than simple glass, has higher wear resistance and acid-and base-resisting aggressiveness, and Heat stability is good is "dead".Color and luster is attractive in appearance, outward appearance is magnificent, wear-resistant, premium properties such as fugitive color not.The devitrified glass ceramics plate is used as the finishing material of buildings in a large number at present, as the finishing material and the structured material that replace materials such as marble or granite to locate as exterior wall, floor, flooring, stair tread, subsides post, hall counter top, elevator door limit, toilet table top, cooking chopping board etc., also can be used as balcony and sash stuff, other house decorative material of various high-grade furnitures, high-grade precious artwork making and various uses.
Summary of the invention
For solving a large amount of concrete debris in the urban architecture, turn waste into wealth, the invention discloses the method and the application thereof that utilize concrete sludge to prepare ceramic material of microcrystalline glass.
The present invention utilizes concrete sludge to prepare ceramic material of microcrystalline glass, concrete sludge with 65%～85% and 15%～35% additive uniform mixing, adopt high-temperature melting method to prepare parent glass, heat-treat by parent glass again and obtain devitrified glass ceramics.
Adopt high-temperature melting method to prepare in the parent glass, behind concrete sludge with 65%～85% and 15%～35% the additive uniform mixing, in High Temperature Furnaces Heating Apparatus, keep 1400 ℃～1600 ℃ insulation 1～3h to carry out melt processed, glass melt cools off fast by distilled water, at 600 ℃～680 ℃ annealing time 7～10h, furnace cooling, 80～120 ℃/h of speed of cooling obtains parent glass.
Parent glass changes in the devitrified glass ceramics process, will be incubated the thermal treatment process that 1～10h carries out the sintering crystallization under 790 ℃～1050 ℃ condition after the glass specimen moulding in heat treatment furnace, and cooling obtains devitrified glass ceramics then.
The additive composition comprises: SiO
2, Al
2O
3, MgO, CaF
2, be preferably as follows content by the weight part of chemically pure reagent: 33.0～50.8 SiO
2, 13.0～32.9 Al
2O
3, 10.0～16.6 MgO, 5.3～20.0 CaF
2In order to make product reach different performances, the additive composition can also add by the weight part of chemically pure reagent: 70.1～22.0 ZnO and/or 0.1～10 Na
2O.
Other processing method and the condition of devitrified glass ceramics are same as the prior art.
Parent glass changes the thermal treatment process of sintering crystallization in the devitrified glass ceramics process into, and at 820 ℃ of insulation 1～2h, at 1040 ℃ of insulation 1～5h, the crystalline phase of separating out is calcium magnesium silicate CaMgSi then
2O
6With wollastonite CaSiO
3, be suitable for high-abrasive material.Thermal treatment process exists, 790 ℃ of insulation 1～9h, and at 1050 ℃ of insulation 1～3h, the crystalline phase of separating out is CaZnSi then
2O
7, Ca (Fe, Zn) Si
2O
6With wollastonite CaSiO
3, be suitable for finishing material.
The present invention utilizes the castoff concrete sludge as main raw material, synthetic devitrified glass ceramics.The ratio of waste raw material in product is not less than 65%, and do not have secondary and can pollute the waste residue generation.The present invention not only can farthest consume solid waste, the realization environmental protection is produced, turn waste into wealth, turn harm into good, reduce production costs significantly, and have wear-resisting, acid-and base-resisting by the devitrified glass ceramics that this invention is produced and corrode, good stability, "dead", premium properties such as fugitive color, color and luster be not attractive in appearance can be used as high-abrasive material, chemical resistant material and building and ornament materials and use.
Embodiment:
Embodiment 1
The additive composition comprises by the weight part of chemically pure reagent: 50.8 SiO
2, 13.0 Al
2O
3, 16.6MgO, 10.6 CaF
2Concrete sludge with 80% and 20% additive uniform mixing.Keep 1500 ℃ of insulation 2h to carry out melt processed in High Temperature Furnaces Heating Apparatus, glass melt cools off fast by distilled water, and in the annealing furnace of packing into then, at 600 ℃ of insulation 10h, 90 ℃/h of speed of cooling obtains parent glass.With after the glass specimen moulding in heat treatment furnace, at 820 ℃ of insulation 2h, at 1040 ℃ of insulation 1h, carry out the thermal treatment process of sintering crystallization then, cooling obtains devitrified glass ceramics then, the crystalline phase of separating out is calcium magnesium silicate CaMgSi
2O
6With wollastonite CaSiO
3, prepared devitrified glass ceramics can be applicable to high-abrasive material.
Embodiment 2
The additive composition comprises by the weight part of chemically pure reagent: 48 SiO
2, 18.5 Al
2O
3, 10.0 MgO, 5.3 CaF
2, 22.0 ZnO, 1.2 Na
2O.Concrete sludge with 75% and 25% additive uniform mixing.Keep 1440 ℃ of insulation 2h to carry out melt processed in High Temperature Furnaces Heating Apparatus, glass melt cools off fast by distilled water, and in the annealing furnace of packing into then, at 650 ℃ of insulation 8h, 100 ℃/h of speed of cooling obtains parent glass.With after the glass specimen moulding in heat treatment furnace, at 790 ℃ of insulation 6h, at 1050 ℃ of insulation 2h, carry out the thermal treatment process of sintering crystallization then, cooling obtains devitrified glass ceramics then, the crystalline phase of separating out is CaZnSi
2O
7, Ca (Fe, Zn) Si
2O
6With wollastonite CaSiO
3, prepared devitrified glass ceramics can be applicable to finishing material.
Embodiment 3
The additive composition comprises by the weight part of chemically pure reagent: 38.8 SiO
2, 30.2 Al
2O
3, 14.3MgO, 20.0 CaF
2, 5.8 Na
2O.Concrete sludge with 65% and 35% additive uniform mixing.Keep 1430 ℃ of insulation 2h to carry out melt processed in High Temperature Furnaces Heating Apparatus, glass melt cools off fast by distilled water, and in the annealing furnace of packing into then, at 680 ℃ of insulation 7h, 110 ℃/h of speed of cooling obtains parent glass.With after the glass specimen moulding in heat treatment furnace, at 800 ℃ of insulation 9h, at 1000 ℃ of insulation 3h, carry out the thermal treatment process of sintering crystallization then, cooling obtains devitrified glass ceramics then, prepared devitrified glass ceramics can be applicable to chemical resistant material.
Claims (8)
1. utilize concrete sludge to prepare the method for devitrified glass ceramics, it is characterized in that 65%～85% concrete sludge and 15%～35% additive uniform mixing, adopt high-temperature melting method to prepare parent glass, heat-treat by parent glass again and obtain devitrified glass ceramics.
2. utilize concrete sludge to prepare the method for devitrified glass ceramics according to claim 1, it is characterized in that adopting high-temperature melting method to prepare in the parent glass, behind concrete sludge with 65%～85% and 15%～35% the additive uniform mixing, in High Temperature Furnaces Heating Apparatus, keep 1400 ℃～1600 ℃ insulation 1～3h to carry out melt processed, glass melt cools off fast by distilled water, furnace cooling behind 600 ℃～680 ℃ annealing 7～10h, 80～120 ℃/h of speed of cooling obtains parent glass.
3. utilize concrete sludge to prepare the method for devitrified glass ceramics according to claim 1, it is characterized in that in the parent glass processing devitrified glass ceramics process, to be incubated the thermal treatment process that 1～10h carries out the sintering crystallization under 790 ℃～1050 ℃ condition after the glass specimen moulding in heat treatment furnace, cooling obtains devitrified glass ceramics then.
4. utilize concrete sludge to prepare the method for devitrified glass ceramics as claimed in claim 1 or 2, it is characterized in that the additive composition comprises: SiO
2, Al
2O
3, MgO, CaF
2
5. as described in claim 4, utilize concrete sludge to prepare the method for devitrified glass ceramics, it is characterized in that the additive composition comprises by the weight part of chemically pure reagent: 33.0～50.8 SiO
2, 13.0～32.9Al
2O
3, 10.0～16.6 MgO, 5.3～20.0 CaF
2
6. as described in claim 5, utilize concrete sludge to prepare the method for devitrified glass ceramics, it is characterized in that the additive composition can also add by the weight part of chemically pure reagent: 70.1～22.0ZnO and/or 0.1～10Na
2O.
7. as described in claim 1 or 3, utilize concrete sludge to prepare the method for devitrified glass ceramics, it is characterized in that thermal treatment process is, 820 ℃ of insulation 1～2h, at 1040 ℃ of insulation 1～5h, the crystalline phase of separating out is calcium magnesium silicate CaMgSi then
2O
6With wollastonite CaSiO
3, be suitable for high-abrasive material.
8. as described in claim 1 or 3, utilize concrete sludge to prepare the method for devitrified glass ceramics, it is characterized in that thermal treatment process is, 790 ℃ of insulation 1～9h, at 1050 ℃ of insulation 1～5h, the crystalline phase of separating out is CaZnSi then
2O
7, Ca (Fe, Zn) Si
2O
6With wollastonite CaSiO
3, be suitable for finishing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100451488A CN100360446C (en) | 2005-11-23 | 2005-11-23 | Process for preparing microcrystal glass ceramic by concrete sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100451488A CN100360446C (en) | 2005-11-23 | 2005-11-23 | Process for preparing microcrystal glass ceramic by concrete sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1792923A true CN1792923A (en) | 2006-06-28 |
| CN100360446C CN100360446C (en) | 2008-01-09 |
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ID=36804591
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|---|---|---|---|
| CNB2005100451488A Expired - Fee Related CN100360446C (en) | 2005-11-23 | 2005-11-23 | Process for preparing microcrystal glass ceramic by concrete sludge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531461B (en) * | 2009-04-16 | 2011-06-29 | 清华大学 | Dielectric material of glass-ceramics with high energy storage density and preparation method |
| CN101537421B (en) * | 2009-04-13 | 2011-09-07 | 山东建筑大学 | Separation method of waste concrete and application of product powder of waste concrete |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069957A (en) * | 1992-07-21 | 1993-03-17 | 钱宏毅 | Formalation for crystallite granite |
| CN1026407C (en) * | 1992-09-28 | 1994-11-02 | 唐山市古冶玻璃制品厂 | Microcrystalline glass granite decoration board |
| CN1094475C (en) * | 1994-03-23 | 2002-11-20 | 中国科学院上海硅酸盐研究所 | Manufacture of opal glass ceramics |
| CN1065516C (en) * | 1996-04-30 | 2001-05-09 | 赵凤宇 | Process and equipment for preparing nucleated glass using nepheline |
-
2005
- 2005-11-23 CN CNB2005100451488A patent/CN100360446C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537421B (en) * | 2009-04-13 | 2011-09-07 | 山东建筑大学 | Separation method of waste concrete and application of product powder of waste concrete |
| CN101531461B (en) * | 2009-04-16 | 2011-06-29 | 清华大学 | Dielectric material of glass-ceramics with high energy storage density and preparation method |
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| Publication number | Publication date |
|---|---|
| CN100360446C (en) | 2008-01-09 |
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Granted publication date: 20080109 Termination date: 20101123 |