CN102964143A - Method for preparing foamed ceramic insulation board by waste glass ceramic wafer - Google Patents
Method for preparing foamed ceramic insulation board by waste glass ceramic wafer Download PDFInfo
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Abstract
The invention discloses a method for preparing a foamed ceramic insulation board by a waste glass ceramic wafer, belonging to the field of preparation technology of the foamed ceramic insulation board. The method comprises the steps of: washing the waste glass ceramic wafer with clear water, drying and grinding by ball milling to obtain waste glass ceramic powder with the fineness less than or equal to 100mu m; mixing the waste glass ceramic powder, pulverized fuel ash, furnace slag, coal gangue, ceramic tailings, foaming agent and modifying agent according to the mass ratio of (30-40):(10-15):(5-7):(10-18):(25-35):(1.8-2.2):(1.1-1.5); putting the mixture into a ball grinding mill, carrying out wet grinding and evenly mixing to form mixed slurry; drying by a pressure type spray granulation dryer and putting the dried product into a foaming refractory mould coated with aluminum oxide; heating to 1120-1150 DEG C in a heating furnace; and finally, annealing, cooling and cutting to obtain the foamed ceramic insulation board. The method is low in production cost and simple in technology, and can be used for continuously preparing the porous foamed ceramic insulation board with large size; and the product is good in performances.
Description
Technical field
The invention belongs to the foam ceramic thermal insulation technical field of material, relate to the method for utilizing waste material to prepare building thermal insulation material, particularly a kind of method of utilizing the cullet ceramic plate to prepare foamed ceramic insulation board.
Background technology
Development along with Chinese national economy, the building trade novel wall material is faced with the challenge of update, in " national economy and social development ' 12 ' plan and distant view outline in 2015 ", classify building energy conservation and utilization of waste material as national important industry.In recent years, China's dwelling house enters the large-scaled construction period, and materials for wall accounts for the ratio of material of construction 70%, and its demand increases greatly.
In the face of the use of so extensive body of wall energy-saving material, develop new clean energy can be the steps necessary that realizes sustainable economic development with economizing on, and the most general heat preserving and insulating material just of use comprises two kinds of inorganic materials and organic materialss at present.Inorganic materials comprises pearlstone, gas concrete, rock wool, glass wool etc., and these material difficulty of construction are large, and shatter value is large.Organic materials comprises polystyrene foamed plastics, polyurethane foam plastic etc., exists burning-point low, easily poisons, and building is with shortcomings such as disease are many, and the earth injures the safety of people's life and property.
Foamed ceramics is a kind of novel light lagging material that 20 century 70s grow up since it have the void content height, thermal conductivity coefficient is low, lightweight, hardness is high, anti-thermal shock, high temperature resistant, corrosion-resistant and good premium propertiess such as physical strength.In foamed ceramics, because the existence in the hole of holding one's breath has reduced its exothermal efficiency, reduce the convection current in the heat propagation process, made foamed ceramics have the performances such as thermal conductivity is low, thermal shock resistance is good, developed into a kind of desirable Building Fire Protection heat preserving and insulating material.
At present, the method for preparing the foam ceramic thermal insulation material mainly contains powder integral foam method and slurry foaming (Liu Pei gives birth to porous material and draws press of opinion [M] Tsing-Hua University, in September, 2004 first version).Powder integral foam method is to adopt the whipping agents such as calcium carbonate, calcium hydroxide, Tai-Ace S 150 and hydrogen peroxide, make the preparation technology who obtains the aperture foamed ceramics, the method contoured foam ceramic process is complicated, wayward, and the foamed ceramics of preparation is prone to the efflorescence peeling phenomenon and contains the hole of holding one's breath in a large number, so the utilization and extention rate is low; Slurry foaming is to utilize ceramic suspension liquid to foam, the drying demoulding method technique of reburning, and there is complex process equally in the method, and cost is higher, is difficult for making continuously the defective of large-sized porous foam ceramic.
Summary of the invention
The present invention is cost height, complex process, the difficult defective of making continuously large-sized porous foam ceramic lagging material that exists in order to solve prior art, and a kind of method of utilizing the cullet ceramic plate to prepare foamed ceramic insulation board is provided.
The present invention is achieved by the following technical solutions:
A kind of method of utilizing the cullet ceramic plate to prepare foamed ceramic insulation board may further comprise the steps:
(1) the cullet ceramic plate is clean with flushing with clean water, oven dry, ball mill pulverizing obtains the cullet ceramics powder of fineness≤100um;
The proportioning of (2) cullet ceramics powder, flyash, slag, coal gangue, ceramic mine tailing, whipping agent, properties-correcting agent being pressed mass fraction 30-40:10-15:5-7:10-18:25-35:1.8-2.2:1.1-1.5 is mixed, make compound and compound is put into ball mill wet-milling mixing, form mixing mud;
(3) mixing mud is adopted the press spray granulating and drying machine dry, temperature out is controlled at 90-120 ℃, and the powder that makes is packed in the foaming refractory-material dies that scribbles aluminum oxide;
The foaming refractory-material dies that (4) powder will be housed is sent into heating in the process furnace, is heated to 1120-1150 ℃, and foamed ceramic insulation board for building is cooled off, cuts, namely gets in then annealing.
Further, ball milling described in the step (1) is to utilize the alumina balls masonry to be the grinding medium abrading-ball, abrading-ball and cullet ceramic plate mass ratio are 2～2.3:1, grind 22-26h, will be with the scrap glass ceramic plate of collecting with flushing with clean water number time before pulverizing, except dust, dirt, again clean fragment is put into baking oven and dry, then pulverize, make waste material granularity fineness≤100um, if particle is excessively thick, swelling property is poor, forms thick foamed ceramics, otherwise, swelling property is good, but be unfavorable for the even mixing of whipping agent, the powder of milled will be placed in the baking oven always and keep dry, in order to using, otherwise moist powder is unfavorable for even foaming.
Described whipping agent comprises carbon black, carbonic acid silicon, calcium carbonate, white ashlar powder, phlogopite, graphite, Manganse Dioxide or their mixture, the blowing temperature that different whipping agents requires is different with foamed time, the aperture of made foamed ceramics is also different with the hole wall thin and thick, choose the whipping agent that is fit to basic unit's prescription, make the foamed ceramics aperture of making even, hole wall is thinner; In use, whipping agent must and the full and uniform mixing of powder, to prevent during mixing that organism or dust from sneaking in the raw material, in order to avoid produce unusual foamed position, and cause quality product to descend, mixing time is relevant with blending means, equipment and mixture strength.
Described properties-correcting agent comprises that antimonous oxide, borax, sodium-metaphosphate, barium sulfate, silicofluoric acid are received, yellow soda ash, second diamino salt, difference according to component concentration, can select different properties-correcting agent, add the performance that an amount of properties-correcting agent can improve foamed ceramics and increase the blowing temperature scope, reduce communicating aperture, improve physical strength, the prompting yield rate.
The mass fraction 35:13:6:15:30:2:1.3 of described cullet ceramics powder, flyash, slag, coal gangue, ceramic mine tailing, whipping agent, properties-correcting agent.
Wet-milling in the described step (2) is to utilize alumina balls as the grinding medium abrading-ball, and the quality of abrading-ball, compound and water is 2～2.1:1:0.6～0.8, grinds 10～13 hours.
Foaming refractory-material dies in the described step (3) is of a size of 1100 * 1260 * 80mm.
Process furnace in the described step (4) is the tunnel kiln of continous way.
Compared with prior art, the present invention has the following advantages:
(1) the present invention adopts the waste materials such as cullet ceramic plate to prepare foamed ceramic insulation board, not only economizes on resources, and reduces production costs, and has protected environment, turns waste into wealth.
(2) preparation technology of the present invention is simple, can make continuously large-sized porous foam ceramic warming plate.
(3) the foamed ceramic insulation board physical strength that is worth according to the inventive method is high, and excellent heat insulating performance is good fire-retardant material, and is difficult for embrittlement, good stability, and also dyeing behavior is good, can be used as thermal insulation decorative material.
Embodiment
The present invention will be further described below in conjunction with specific embodiment.
Embodiment 1
A kind of method of utilizing the cullet ceramic plate to prepare foamed ceramic insulation board may further comprise the steps:
(1) the cullet ceramic plate of collecting is clean with flushing with clean water, then put into the oven dry of baking railway carriage or compartment, take out in the ball mill of packing into immediately and pulverize, control abrading-ball and glass-ceramic sheet are than being 2:1, ball milling 23 hours makes fineness≤100um;
The proportioning of (2) cullet ceramics powder, flyash, slag, coal gangue, ceramic mine tailing, whipping agent, properties-correcting agent being pressed mass fraction 30:12:5:15:35:2.2:1.3 is mixed, make compound and compound is put into ball mill wet-milling mixing, form mixing mud;
Described whipping agent is for selecting carbon black, calcium carbonate, graphite; Described properties-correcting agent is Sodium Silicofluoride;
(3) mixing mud is adopted the pressure spray dryer granulation, temperature out is controlled at 93 ℃, and the powder that makes is packed in the foaming refractory-material dies that scribbles aluminum oxide;
The foaming refractory-material dies that (4) powder will be housed is sent into heating in the process furnace, is heated to 1125 ℃, and foamed ceramic insulation board for building is cooled off, cuts, namely gets in then annealing.
Embodiment 2
A kind of method of utilizing the cullet ceramic plate to prepare foamed ceramic insulation board may further comprise the steps:
(1) the cullet ceramic plate of collecting is clean with flushing with clean water, then put into the oven dry of baking railway carriage or compartment, take out in the ball mill of packing into immediately and pulverize, control abrading-ball and glass-ceramic tablet quality are than being 2.2:1, ball milling 26 hours makes fineness≤100um;
The proportioning of (2) cullet ceramics powder, flyash, slag, coal gangue, ceramic mine tailing, whipping agent, properties-correcting agent being pressed mass fraction 33:12:6:10:30:2:1.1 is mixed, make compound and compound is put into ball mill wet-milling mixing, form mixing mud;
Described whipping agent is carbon black, aluminium carbonate silicon, calcium carbonate, ground dolomite; Described properties-correcting agent is barium sulfate;
Wet-milling is to utilize alumina balls as the grinding medium abrading-ball, and the quality of abrading-ball, compound and water is 2:1:0.6, grinds 12 hours;
(3) mixing mud is adopted the pressure spray dryer granulation, temperature out is controlled at 100 ℃, the powder that makes is packed in the foaming refractory-material dies that scribbles aluminum oxide into tool size 1100 * 1260 * 80mm;
The foaming refractory-material dies that (4) powder will be housed is sent into heating in the process furnace, is heated to 1120 ℃, and foamed ceramic insulation board for building is cooled off, cuts, namely gets in then annealing.
Embodiment 3
A kind of method of utilizing the cullet ceramic plate to prepare foamed ceramic insulation board may further comprise the steps:
(1) the cullet ceramic plate of collecting is clean with flushing with clean water, then put into the oven dry of baking railway carriage or compartment, take out in the ball mill of packing into immediately and pulverize, control abrading-ball and glass-ceramic tablet quality are than being 2:1, ball milling 22 hours makes fineness≤100um;
The proportioning of (2) cullet ceramics powder, flyash, slag, coal gangue, ceramic mine tailing, whipping agent, properties-correcting agent being pressed mass fraction 40:13:7:18:25:1.8:1.5 is mixed, make compound and compound is put into ball mill wet-milling mixing, form mixing mud;
Described whipping agent is Manganse Dioxide; Described properties-correcting agent is second diamino salt, yellow soda ash;
Wet-milling is to utilize alumina balls as the grinding medium abrading-ball, and the quality of abrading-ball, compound and water is 2.1:1:0.7, grinds 12 hours;
(3) mixing mud is adopted the pressure spray dryer granulation, temperature out is controlled at 120 ℃, and the powder that makes is packed in the foaming refractory-material dies that scribbles aluminum oxide;
The foaming refractory-material dies that (4) powder will be housed is sent into heating in the tunnel kiln of continous way, is heated to 1130 ℃, and then annealing, namely gets foamed ceramic insulation board for building at cooling, cutting.
Embodiment 4
A kind of method of utilizing the cullet ceramic plate to prepare foamed ceramic insulation board may further comprise the steps:
(1) the cullet ceramic plate of collecting is clean with flushing with clean water, then put into the oven dry of baking railway carriage or compartment, take out in the ball mill of packing into immediately and pulverize, control abrading-ball and glass-ceramic tablet quality are than being 2.3:1, ball milling 24 hours makes fineness≤100um;
The proportioning of (2) cullet ceramics powder, flyash, slag, coal gangue, ceramic mine tailing, whipping agent, properties-correcting agent being pressed mass fraction 35:15:5:13:28:2:1.3 is mixed, make compound and compound is put into ball mill wet-milling mixing, form mixing mud;
Described whipping agent is phlogopite; Described properties-correcting agent is antimonous oxide;
Wet-milling is to utilize alumina balls as the grinding medium abrading-ball, and the quality of abrading-ball, compound and water is 2:1:0.8, grinds 12 hours;
(3) mixing mud is adopted the pressure spray dryer granulation, temperature out is controlled at 90 ℃, and the powder that makes is packed in the foaming refractory-material dies that scribbles aluminum chloride;
The foaming refractory-material dies that (4) powder will be housed is sent into heating in the process furnace, is heated to 1140 ℃, and foamed ceramic insulation board for building is cooled off, cuts, namely gets in then annealing.
Embodiment 5
A kind of method of utilizing the cullet ceramic plate to prepare foamed ceramic insulation board may further comprise the steps:
(1) the cullet ceramic plate of collecting is clean with flushing with clean water, then put into the oven dry of baking railway carriage or compartment, take out in the ball mill of packing into immediately and pulverize, control abrading-ball and glass-ceramic tablet quality are than being 2.2:1, ball milling 24 hours makes fineness≤100um;
The proportioning of (2) cullet ceramics powder, flyash, slag, coal gangue, ceramic mine tailing, whipping agent, properties-correcting agent being pressed mass fraction 35:13:6:15:30:2:1.3 is mixed, make compound and compound is put into ball mill wet-milling mixing, form mixing mud;
Described whipping agent is carbon black, graphite; Described properties-correcting agent is barium sulfate, sodium-metaphosphate;
Wet-milling is to utilize alumina balls as the grinding medium abrading-ball, and the quality of abrading-ball, compound and water is 2:1:0.8, grinds 12 hours;
(3) mixing mud is adopted the pressure spray dryer granulation, temperature out is controlled at 110 ℃, and the powder that makes is packed in the foaming refractory-material dies that scribbles aluminum oxide;
The foaming refractory-material dies that (4) powder will be housed is sent into heating in the tunnel kiln of continous way, is heated to 1150 ℃, and then annealing, namely gets foamed ceramic insulation board for building at cooling, cutting.
Claims (8)
1. a method of utilizing the cullet ceramic plate to prepare foamed ceramic insulation board is characterized in that, may further comprise the steps:
(1) the cullet ceramic plate is clean with flushing with clean water, oven dry, ball mill pulverizing obtains the cullet ceramics powder of fineness≤100um;
The proportioning of (2) cullet ceramics powder, flyash, slag, coal gangue, ceramic mine tailing, whipping agent, properties-correcting agent being pressed mass fraction 30-40:10-15:5-7:10-18:25-35:1.8-2.2:1.1-1.5 is mixed, make compound and compound is put into ball mill wet-milling mixing, form mixing mud;
(3) mixing mud is adopted the press spray granulating and drying machine dry, temperature out is controlled at 90-120 ℃, and the powder that makes is packed in the foaming refractory-material dies that scribbles aluminum oxide;
The foaming refractory-material dies that (4) powder will be housed is sent into heating in the process furnace, is heated to 1120-1150 ℃, and foamed ceramic insulation board for building is cooled off, cuts, namely gets in then annealing.
2. the method for utilizing the cullet ceramic plate to prepare foamed ceramic insulation board according to claim 1, it is characterized in that, ball milling described in the step (1) is to utilize the alumina balls masonry to be the grinding medium abrading-ball, and abrading-ball and cullet ceramic plate mass ratio are 2～2.3:1, grinds 22-26h.
3. the method for utilizing the cullet ceramic plate to prepare foamed ceramic insulation board according to claim 1 and 2, it is characterized in that described whipping agent comprises carbon black, carbonic acid silicon, calcium carbonate, white ashlar powder, phlogopite, graphite, Manganse Dioxide or their mixture.
4. the method for utilizing the cullet ceramic plate to prepare foamed ceramic insulation board according to claim 1 and 2 is characterized in that, described properties-correcting agent comprises that antimonous oxide, borax, sodium-metaphosphate, barium sulfate, silicofluoric acid are received, yellow soda ash, second diamino salt.
5. the method for utilizing the cullet ceramic plate to prepare foamed ceramic insulation board according to claim 1 and 2, it is characterized in that the mass fraction 35:13:6:15:30:2:1.3 of described cullet ceramics powder, flyash, slag, coal gangue, ceramic mine tailing, whipping agent, properties-correcting agent.
6. the method for utilizing the cullet ceramic plate to prepare foamed ceramic insulation board according to claim 1 and 2, it is characterized in that, wet-milling in the described step (2) is to utilize alumina balls as the grinding medium abrading-ball, the quality of abrading-ball, compound and water is 2～2.1:1:0.6～0.8, grinds 10～13 hours.
7. the method for utilizing the cullet ceramic plate to prepare foamed ceramic insulation board according to claim 1 and 2 is characterized in that, the foaming refractory-material dies in the described step (3) is of a size of 1100 * 1260 * 80mm.
8. the method for utilizing the cullet ceramic plate to prepare foamed ceramic insulation board according to claim 1 and 2 is characterized in that, the process furnace in the described step (4) is the tunnel kiln of continous way.
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