CN100591635C - Method for producing foamed glass by using copper tailings - Google Patents
Method for producing foamed glass by using copper tailings Download PDFInfo
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- CN100591635C CN100591635C CN200710019009A CN200710019009A CN100591635C CN 100591635 C CN100591635 C CN 100591635C CN 200710019009 A CN200710019009 A CN 200710019009A CN 200710019009 A CN200710019009 A CN 200710019009A CN 100591635 C CN100591635 C CN 100591635C
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- ball milling
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- mine tailing
- foam glass
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Abstract
The invention provides a method of producing foam glass with copper tailings. The copper tailings, waste glass, coal black, sodium fluosilicate and sodium phosphate are added in a heat-resistant steeldie after being put in a ball milling tank to be milled into 200 orders below. Then, the die is moved into a foaming furnace to obtain foam glass through the preheating, the foaming, the foam stabilizing and the annealing. The invention uses industrial waste copper tailings as raw materials to prepare the foam glass, added with a little additive. The invention is beneficial to the waste utilization and the environment protection. And the obtained foam glass has the advantages of structure with high strength, low water absorption rate, small density and low thermal conductivity. The inventioncan effectively lower the production cost of the foam glass, protect the environment and change wastes into valuables. The properties of the produced foam glass are that the density is smaller than 0.8g/cm<3>, the water absorption rate is smaller than 1.5vol percent, the average foam diameter is 1-3mm, and the flexural strength can reach to 2.0MPa.
Description
Technical field
The present invention relates to a kind of manufacture method of multicellular glass, particularly a kind of preparation method who utilizes the copper mine tailing to produce multicellular glass.
Background technology
The copper mine tailing is a kind of solid mineral waste material that copper mine manufacturing enterprise discharges after choosing useful component.At present, about abundant recovery with utilize the copper mine tailing also not have scientific and reasonable method, mostly used as paving the way and buried method is handled.Domestic copper mine enterprise is more, if the annual mine tailing that produces is dealt with improperly and will be caused very big pollution to environment.Both contaminate environment was wasted resource again.
Summary of the invention
The object of the present invention is to provide a kind of production cost that can effectively reduce multicellular glass; the protection environment; what turn waste into wealth utilizes copper mine tailing production method of foam glass, and the multicellular glass structural strength that obtains by production method of the present invention is good, water-intake rate is low, thermal conductivity is little and proportion is little.
For achieving the above object, the technical solution used in the present invention is:
1) will put into after the fragmentation of copper scrap mine tailing below ball grinder ball milling to 300 order;
2) cullet is cleaned up, below ball milling to 300 order of oven dry back;
3) press massfraction with 40～60% copper mine tailing, 35～55% cullet, 0.2～0.5% carbon black, 0～5% Sodium Silicofluoride, 0～5% sodium phosphate are put in the ball grinder below ball milling to 200 order;
4) admixtion behind the above-mentioned ball milling is added in the high temperature steel mould, mould is moved in the foaming furnace heat again;
Pre-heating stage rises to 400 ℃ from room temperature with the heat-up rate of 10～12 ℃/min, insulation 20～30min;
Foaming stages, heat-up rate are that 15～20 ℃/min rises to 850～950 ℃;
In the steady bubble stage, under 850～950 ℃ of constant temperature, be incubated 30～60min;
5) quick cooling stages, speed of cooling is 15～25 ℃/min, is cooled to 500～550 ℃, constant temperature 30～60min;
6) annealing stage, cooling rate is 1～2 ℃/min, is annealed to and gets multicellular glass below 50 ℃.
The present invention prepares the used copper mine tailing chemical constitution of multicellular glass: SiO
2: 45.5wt%; Al
2O
3: 14.45wt%; CaO:10.1wt%; MgO:3.1wt%; Fe
2O
3: 13.12wt%; TiO
2: 4.1%; Other 9.63wt%.
Because SiO in the copper mine tailing that the present invention uses
2Content is higher, belong to silicate material, be fit to the production low density, high-intensity multicellular glass thermal insulation material, bubble structure helps forming unicellular structure, has reduced the water-intake rate of multicellular glass material effectively, so the present invention utilizes industrial waste copper mine tailing to be raw material, add a small amount of additive, prepared multicellular glass.The present invention not only helps utilization of waste material, the protection environment, and also the multicellular glass structural strength height that makes, water-intake rate is low, density is little, thermal conductivity is low.The present invention can reduce the production cost of multicellular glass effectively, and the protection environment is turned waste into wealth, and has tangible economic benefit and environmental benefit.The properties of foam glass of producing: density is less than 0.8gcm
-3, water-intake rate is less than 1.5vol%, average bubble diameter 1～3mm, and folding strength can reach 2.0MPa.
Embodiment
Embodiment 1, will put into after the fragmentation of copper scrap mine tailing below ball grinder ball milling to 300 order; Cullet is cleaned up, below ball milling to 300 order of oven dry back; Press massfraction with 57% copper mine tailing, 35% cullet, 0.4% carbon black, 2.6% Sodium Silicofluoride, 5% sodium phosphate are put in the ball grinder below ball milling to 200 order; Sodium Silicofluoride that adopts and sodium phosphate are as additive, and its effect is for effective foamed glass foaming temperature that reduces, and improves properties of foam glass, increases unicellular structure, and all right in addition reinforcing glass melt low temperature viscosity strengthens toughness, plays steady bubble effect.Then the admixtion behind the above-mentioned ball milling is added in the high temperature steel mould, mould is moved in the foaming furnace heat again; Rise to 400 ℃ from room temperature with the heat-up rate of 10 ℃/min, behind the insulation 20min, be incubated 30min after rising to 920 ℃ with the heat-up rate of 20 ℃/min again; Quick cooling stages, speed of cooling is 20 ℃/min, is cooled to 500 ℃, constant temperature 30min; Annealing stage, cooling rate is 1 ℃/min, is annealed to and gets multicellular glass below 50 ℃.Formed multicellular glass even structure, density are 0.8gcm
-3, water-intake rate is 1.5vol%, average bubble diameter 1.5mm, and folding strength reaches 1.8MPa.
Embodiment 2, will put into after the fragmentation of copper scrap mine tailing below ball grinder ball milling to 300 order; Cullet is cleaned up, below ball milling to 300 order of oven dry back; Press massfraction with 51% copper mine tailing, 42% cullet, 0.5% carbon black, 5% Sodium Silicofluoride, 1.5% sodium phosphate are put in the ball grinder below ball milling to 200 order; Admixtion behind the above-mentioned ball milling is added in the high temperature steel mould, mould is moved in the foaming furnace heat again; Rise to 400 ℃ from room temperature with the heat-up rate of 11 ℃/min, behind the insulation 23min; Be incubated 40min after rising to 900 ℃ with the heat-up rate of 18 ℃/min again; Quick cooling stages, speed of cooling is 20 ℃/min, is cooled to 550 ℃, constant temperature 40min; Annealing stage, cooling rate is 1.5 ℃/min, is annealed to and gets multicellular glass below 50 ℃.Formed multicellular glass even structure, density are 0.7gcm
-3, water-intake rate is 1.0vol%, average bubble diameter 1.4mm, and folding strength reaches 1.7MPa.
Embodiment 3, will put into after the fragmentation of copper scrap mine tailing below ball grinder ball milling to 300 order; Cullet is cleaned up, below ball milling to 300 order of oven dry back; Press massfraction with 50% copper mine tailing, 45% cullet, 0.2% carbon black, 2.5% Sodium Silicofluoride, 2.3% sodium phosphate are put in the ball grinder below ball milling to 200 order; Admixtion behind the above-mentioned ball milling is added in the high temperature steel mould, mould is moved in the foaming furnace heat again; Rise to 400 ℃ from room temperature with the heat-up rate of 12 ℃/min, insulation 26min; Be incubated 52min after rising to 880 ℃ with the heat-up rate of 15 ℃/min again; Quick cooling stages, speed of cooling is 18 ℃/min, is cooled to 540 ℃, constant temperature 50min; Annealing stage, cooling rate is 2 ℃/min, is annealed to and gets multicellular glass below 50 ℃.Formed multicellular glass even structure, density are 0.7gcm
-3, water-intake rate is 0.8vol%, average bubble diameter 1.5mm, and folding strength reaches 2.0MPa.
Embodiment 4, will put into after the fragmentation of copper scrap mine tailing below ball grinder ball milling to 300 order; Cullet is cleaned up, below ball milling to 300 order of oven dry back; Press massfraction with 48% copper mine tailing, 47% cullet, 0.4% carbon black, 1.5% Sodium Silicofluoride, 3.1% sodium phosphate are put in the ball grinder below ball milling to 200 order; Admixtion behind the above-mentioned ball milling is added in the high temperature steel mould, mould is moved in the foaming furnace heat again; Rise to 400 ℃ from room temperature with the heat-up rate of 11 ℃/min, behind the insulation 25min; Be incubated 60min after rising to 850 ℃ with the heat-up rate of 19 ℃/min again; Quick cooling stages, speed of cooling is 24 ℃/min, is cooled to 500 ℃, constant temperature 40min; Annealing stage, cooling rate is 1.5 ℃/min, is annealed to and gets multicellular glass below 50 ℃.Formed multicellular glass even structure, density are 0.6gcm
-3, water-intake rate is 0.5vol%, average bubble diameter 1.5mm, and folding strength reaches 1.7MPa.
Embodiment 5, will put into after the fragmentation of copper scrap mine tailing below ball grinder ball milling to 300 order; Cullet is cleaned up, below ball milling to 300 order of oven dry back; Press massfraction with 40% copper mine tailing, 55% cullet, 0.5% carbon black and 4.5% Sodium Silicofluoride are put in the ball grinder below ball milling to 200 order; Admixtion behind the above-mentioned ball milling is added in the high temperature steel mould, mould is moved in the foaming furnace heat again; Rise to 400 ℃ from room temperature with the heat-up rate of 12 ℃/min, behind the insulation 28min; Be incubated 30min after rising to 950 ℃ with the heat-up rate of 16 ℃/min again; Quick cooling stages, speed of cooling is 20 ℃/min, is cooled to 550 ℃, constant temperature 30min; Annealing stage, cooling rate is 1 ℃/min, is annealed to and gets multicellular glass below 50 ℃.Formed multicellular glass even structure, density are 0.5gcm
-3, water-intake rate is 0.5vol%, average bubble diameter 1.5mm, and folding strength reaches 1.5MPa.
Embodiment 6, will put into after the fragmentation of copper scrap mine tailing below ball grinder ball milling to 300 order; Cullet is cleaned up, below ball milling to 300 order of oven dry back; Press massfraction with 44% copper mine tailing, 52% cullet, 0.5% carbon black, 3.5% sodium phosphate are put in the ball grinder below ball milling to 200 order; Admixtion behind the above-mentioned ball milling is added in the high temperature steel mould, mould is moved in the foaming furnace heat again; Rise to 400 ℃ from room temperature with the heat-up rate of 11 ℃/min, behind the insulation 20min; Be incubated 40min after rising to 850 ℃ with the heat-up rate of 16 ℃/min again; Quick cooling stages, speed of cooling is 20 ℃/min, is cooled to 520 ℃, constant temperature 40min; Annealing stage, cooling rate is 1.5 ℃/min, is annealed to and gets multicellular glass below 50 ℃.Formed multicellular glass even structure, density are 0.6gcm
-3, water-intake rate is 0.5vol%, average bubble diameter 1.7mm, and folding strength reaches 1.3MPa.
Embodiment 7, will put into after the fragmentation of copper scrap mine tailing below ball grinder ball milling to 300 order; Cullet is cleaned up, below ball milling to 300 order of oven dry back; Press massfraction with 60% copper mine tailing, 35% cullet, 0.3% carbon black, 2.8% Sodium Silicofluoride, 1.9% sodium phosphate are put in the ball grinder below ball milling to 200 order; Admixtion behind the above-mentioned ball milling is added in the high temperature steel mould, mould is moved in the foaming furnace heat again; Rise to 400 ℃ from room temperature with the heat-up rate of 10 ℃/min, behind the insulation 30min; Be incubated 45min after rising to 930 ℃ with 17 ℃/min heat-up rate again; Quick cooling stages, speed of cooling is 15 ℃/min, is cooled to 510 ℃, constant temperature 60min; Annealing stage, cooling rate is 2 ℃/min, is annealed to and gets multicellular glass below 50 ℃.
The present invention is fit to produce plate-like product, but have relatively high expectations for its calcining system, roughly be divided into four-stage (1) intensification pre-heating stage specific to sintering curve, heat-up rate is 10～12 ℃/min, after 400 ℃, be incubated 20～30min, purpose is to make the abundant preheating of admixtion, reduces because heat-up rate is too fast, causes the admixtion overall temperature difference; Can avoid at 400 ℃ of following constant temperature that carbon black just burns before admixtion is softening; (2) the steady bubble stage of foaming, heat-up rate is 15～20 ℃/min in the foaming process, is rapidly heated to avoid whipping agent at high temperature to overflow from admixtion the raw materials used and auxiliary agent according to the present invention, 850～950 ℃ of its blowing temperature scopes, constant temperature time are 30～60min; Purpose is to allow admixtion fully send out into uniform multicellular glass under blowing temperature.(3) the fast cooling stage, purpose is to make the melten glass of foaming to cool off fast, makes it foam structure and is fixed up.Lead but that speed is 15～25 ℃/min, be cooled to 500～550 ℃, constant temperature time 30～60min; Thermostatic effect mainly considers to make the blocks internal and external temperature even, and is ready for entering annealing stage; (4) annealing stage of slowly lowering the temperature, cooling rate is 1～2 ℃/min, this stage mainly acts on and is to remove the thermal stresses of bringing because of fast cooling, makes foam glass product have the favorable mechanical performance.
Use the foam glass that the present invention produces, have in light weight, water absorption rate is low, intensity good. And The coefficient of expansion is low, and anti-thermal shock is good, has insulation effect, flame retardant effect, and foam glass is built as novel It is very extensive to build material applications. The present invention does not produce solid emission, the foam glass limit that cuts down The angle material can the repetitive cycling utilization. It can be used for roof and exterior-wall heat insulation as heat-insulating material, can have Effect ground reduces heating and refrigeration expense. This kind foam glass is the anti-of steam power plant's smokestack inwall in addition Rotten insulation excellent material. Moreover this kind foam glass can also be used for deep cooling and cryogenic piping, establish The appearance cold insulation of standby, container and storage tank; In the outer insulation of gentle high-temperature pipe, equipment; Oily and hot drop The outer insulation of blue or green storage tank; The insulation of petrochemical industry, sulfuration production process; Be used for Tunnel Engineering and underground The hydrophobic damp proof insulation field of engineering; Therefore, this kind foam glass has wide application prospect.
Claims (1)
1, utilize copper mine tailing production method of foam glass, it is characterized in that:
1) will put into after the fragmentation of copper mine tailing below ball grinder ball milling to 300 order, the weight percent of described copper mine tailing chemical constitution is: SiO
2: 45.5%; Al
2O
3: 14.45%; CaO:10.1%; MgO:3.1%; Fe
2O
3: 13.12%; TiO
2: 4.1%; Other are 9.63% years old;
2) cullet is cleaned up, below ball milling to 300 order of oven dry back;
3) press massfraction with 40～60% copper mine tailing, 35～55% cullet, 0.2～0.5% carbon black, 0～5% Sodium Silicofluoride, 0～5% sodium phosphate are put in the ball grinder below ball milling to 200 order;
4) admixtion behind the ball milling is added in the high temperature steel mould, the high temperature steel mould is moved in the foaming furnace heat again:
Pre-heating stage rises to 400 ℃ from room temperature with the heat-up rate of 10～12 ℃/min, insulation 20～30min;
Foaming stages, heat-up rate is 15～20 ℃/min, rises to 850～950 ℃;
In the steady bubble stage, under 850～950 ℃ of constant temperature, be incubated 30～60min;
5) quick cooling stages, speed of cooling is 15～25 ℃/min, is cooled to 500～550 ℃, constant temperature 30～60min;
6) annealing stage, cooling rate is 1～2 ℃/min, is annealed to and gets multicellular glass below 50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710019009A CN100591635C (en) | 2007-11-06 | 2007-11-06 | Method for producing foamed glass by using copper tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710019009A CN100591635C (en) | 2007-11-06 | 2007-11-06 | Method for producing foamed glass by using copper tailings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101182124A CN101182124A (en) | 2008-05-21 |
| CN100591635C true CN100591635C (en) | 2010-02-24 |
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| CN200710019009A Expired - Fee Related CN100591635C (en) | 2007-11-06 | 2007-11-06 | Method for producing foamed glass by using copper tailings |
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| CN101880128A (en) * | 2010-07-02 | 2010-11-10 | 陕西科技大学 | Method for preparing lightweight high-strength foam glass |
| RU2487842C1 (en) * | 2011-12-29 | 2013-07-20 | Юлия Алексеевна Щепочкина | Mixture for making foamed glass |
| CN102617020B (en) * | 2012-03-02 | 2014-03-05 | 浙江振申绝热科技有限公司 | Process for producing foam glass by using natural gas as fuel and roller kiln used by same |
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| CN103524043B (en) * | 2013-10-09 | 2015-05-13 | 北京科技大学 | A method of producing foam glass by using cold-rolling sludge and waste glass |
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| CN105417958B (en) * | 2015-12-29 | 2018-03-06 | 江西省科学院能源研究所 | A kind of method that high-intensity foam glass material is prepared using copper tailing |
| CN109020236A (en) * | 2017-06-09 | 2018-12-18 | 河北卓达建材研究院有限公司 | A kind of preparation method of white foam glass |
| CN108546147A (en) * | 2018-04-20 | 2018-09-18 | 湖北工业大学 | A kind of low melting point porous foam stone and preparation method thereof |
| CN112441747B (en) * | 2020-12-11 | 2022-12-06 | 江西省建材科研设计院有限公司 | Method for preparing foam microcrystal heat-insulation and decoration integrated board by using copper tailings |
| CN112876286A (en) * | 2021-03-30 | 2021-06-01 | 西安建筑科技大学 | Foam porous material and preparation method thereof |
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