CN102515478A - Method for producing microcrystalline foam insulating sheet material by utilizing feldspar - Google Patents

Method for producing microcrystalline foam insulating sheet material by utilizing feldspar Download PDF

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Publication number
CN102515478A
CN102515478A CN2011104124724A CN201110412472A CN102515478A CN 102515478 A CN102515478 A CN 102515478A CN 2011104124724 A CN2011104124724 A CN 2011104124724A CN 201110412472 A CN201110412472 A CN 201110412472A CN 102515478 A CN102515478 A CN 102515478A
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Prior art keywords
insulating board
crystallization
heat
crystallite
foam heat
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赵保华
邹辞阳
赵玉岭
梁东成
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ZIBO YUJING NEW MATERIALS TECHNOLOGY CO LTD
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ZIBO YUJING NEW MATERIALS TECHNOLOGY CO LTD
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Publication of CN102515478A publication Critical patent/CN102515478A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

Abstract

The invention provides a method for producing microcrystalline foam insulating sheet material by utilizing feldspar. Abundant feldspar on the earth is utilized as a main raw material, which is companied with a proper amount of quartz sand and heavy calcium; and auxiliary raw materials mainly comprise industrial barium carbonate, industrial soda ash, industrial borax, industrial zinc oxide, colouring agent, oxidizing agent and clarifier. The microcrystalline foam insulating sheet material of the invention has excellent physical and chemical performances, and is green and environment-friendly; a production process is suitable for industrial streamline process; and the invention has characteristics of easily available raw materials with wide sources, low cost, short crystallization foaming time, high production efficiency, energy saving and integrated and effective utilization of resource, etc.

Description

A kind of method of utilizing feldspar to produce the crystallite foam heat-insulating board
Technical field:
The crystallite foam heat-insulating board is a kind of silicate product among the present invention, belongs to the building materials industry product, particularly relates to a kind of method of utilizing feldspar to produce the crystallite foam heat-insulating board.
Background technology:
1, the felspathic present situation of China
Feldspar is the general name that feldspar family rock draws, and it is the aluminum silicate mineral of a type of calcic, sodium and potassium, and it has a variety of, like albite, lime feldspar, celsian-felspar, hyalophane, microline, potash feldspar, sanidine etc.Modal mineral are exactly feldspar in the earth's crust, even also common to them with meteoritic abundance on the moon.In the scope of underground 15 km deep, the shared earth's crust gross weight of feldspar reaches 60% unexpectedly.Feldspar is the staple that constitutes volcanic rock, and is also very common in rock and the sedimentogeneous rock on the turn.The common oyster white of feldspar is dyed Huang, brown, pale red, dark-grey isochrome but Chang Yin contains impurity, and between the proportion 2.56~2.76, Mohs' hardness is 6~6.5, has vitreous luster, and property is crisp, and high compression strength is arranged, and acid is had stronger chemicalstability.Mostly the potassium felspar sand color is flesh pink, and ash, white brown are also arranged.Albite is white, ash and light yellow, and lime feldspar is a white or light grey.The feldspar that is rich in potassium or sodium is mainly used in ceramic industry, glass industry and porcelain enamel industry; The feldspar that contains rare elements such as rubidium and caesium can be used as the raw mineral materials that extracts these elements; The feldspar that color and luster is beautiful can be used as decorates building stones and semiprecious stone.
The feldspar Chemical Composition is silicon-dioxide (SiO 2), aluminum oxide (Al 2O 3), red stone (Fe 2O 3), potassium oxide (K 2O), sodium oxide (Na 2O), quicklime (CaO), barium oxide (BaO) etc., wherein staple is silicon-dioxide (SiO 2) content 60~75% and aluminum oxide (Al 2O 3) content 14~23%.Albite is felspathic a kind of, is common feldspar mineral, is the aluminosilicate (NaAlSi3O8) of sodium.Albite is generally glassy crystal, can be colourless, also white, yellow, red, green or black can be arranged, and albite is mainly used in makes pottery, soap, ceramic tile, floor, glass, grinding materials and grinding tool etc., on pottery, is mainly used in glaze.
The present invention makes full use of feldspar abundant on the earth, promotes its industrial value a practicable method is provided.
, multicellular glass and crystallite foam heat-insulating board
Multicellular glass is also claimed sintered glass; Be to be rich in the base-material of glassy phase material with cullet, mica, flyash, perlite etc.; Add an amount of whipping agent, properties-correcting agent and pulverize mixing, in particular mold, have a large amount of evenly porous materials of pores through a kind of inside that preheating, fusion, foaming, cooling, annealing etc. are processed.The multicellular glass production application; Part has solved domestic refuse such as cullet, flyash and industrial residue rationally utilizes problem; A kind of light material of excellent performance is provided for the construction work industry simultaneously; Slow down environmental pollution to a certain extent, played the effect of environmental protection, had the environmental protection building material of good social effect and economic benefit.
The development of China's multicellular glass is than later, and up to the 80's, more domestic scientific and technical personnel bring into use cullet Development and Production multicellular glass; And obtain certain achievement; In this 30 years development process, Chinese development with developed multiple foam glass product, but the multicellular glass ubiquity quality problems such as physical strength is low, thermal-shock resistance difference on the whole; Big limitations its widespread use on building decoration and heat insulating; Cause domestic Foam Glass Industry Development slow, strengthen the scientific research investment dynamics, further improve the physicochemical property of foam glass product; Expanding its range of application, is to demand urgently at present dealing with problems and the trend of researching and developing from now on.
Multicellular glass is widely used abroad already, and has brought into play positive effect in a lot of fields, especially on construction industry.In Europe, area such as U.S.A, day and national multicellular glass is by mass production and widespread use; Wherein glass industry developed countries such as the U.S., Russia, Britain, Hungary, France, Czech, Japan, Germany have become the main production of multicellular glass, consumption, big export country; These countries have accumulated many experiences and technological achievement in the multicellular glass research and development are produced, and production technique is also constantly being improved and development.In recent decades, countries in the world have been developed colored acoustic foams glass, lamination multicellular glass, heat resistanceheat resistant radiation multicellular glass, building heat preservation multicellular glass or the like again.Though domestic production multicellular glass is main raw material with industrial cullet generally; Cost is lower; Be beneficial to environment protection; But because the shortcoming of low, the thermal-shock resistance difference of physical strength is limited to it as multifunctional material and materials for wall popularization and application, simultaneously also for the scientific and technical personnel that will be correlated with from now on clear and definite direction.
Multicellular glass and sytull have premium properties separately; A kind of New Building Materials of both advantages are the crystallite foam heat-insulating boards, and the crystallite foam heat-insulating board is that a kind of its inside has glassy phase, crystal mutually and be uniformly distributed with complex phase solid material such as a large amount of micro-bubble bodies.
The crystallite foam heat-insulating board is a kind of new green environment protection type materials for wall; It is a kind of countless small even connections or sealing pore and have ad hoc structure shape crystal lightweight, HS complex phase solid material mutually of in vitreum, being covered with; Its characteristic density is little, intensity is high, thermal conductivity is little, fire prevention, nontoxic, do not have radioactivity, corrosion-resistant, can process etc., have premium propertiess such as insulation, heat insulation, sound absorption, protection against the tide, fire prevention.Relatively tradition has character such as in light weight, HS, heat-insulation and heat-preservation, sound-absorbing noise control with brick, belongs to the environmental protection and energy saving material, improves structural quality greatly, alleviates deadweight, reduces the building foundation cost, is a kind of present ideal equivalent material of knowing.
The crystallite foam heat-insulating board is a kind of insulation of superior performance, heat insulation, sound absorption, protection against the tide, fire prevention, the high-strength novel environmental-friendly construction material of light weight; Good physicochemical properties such as it has the physical strength height, thermal conductivity is little, thermal property is stable, anti-combustion, indeformable, durable, heatproof, anti-rotten, anti-oxidant, acid and alkali-resistance, nontoxic, "dead", easy processing; With its weather resistance, security, safety, good chemicalstability; In the fields such as, high temperature insulating moistureproof, heat-resisting, freeze proof, low temperature insulation, moistureproof engineering, sound-absorbing engineering at energy-saving heat preserving, sound absorption noise control, corrosion resistant in occupation of more and more important position; And it is as a kind of new construction material; With multi-functionals such as energy-saving and environmental protection, safety, decorations simultaneously and deposit; Belong to country and advocate the industry of encouraging and supporting, have the vast market development prospect.
The crystallite foam heat-insulating board adopts the production technology of cleaning, does not produce pollutent in the production process, and firing temperature is low; Energy consumption is low; Production efficiency is high, and can utilize the broken waste material of mineral products as producing desired raw material in a large number, turns waste into wealth; Save natural resources, believe that the crystallite foam glass plate will can be widely used in all respects in people's daily life with the ecological, environmental protective theory of its unique superior physicochemical property and " safety, healthy, health ".
Summary of the invention:
A kind of purpose of utilizing feldspar to produce the method for crystallite foam heat-insulating board of the present invention; To the problems referred to above a kind of method of utilizing feldspar to produce the crystallite foam heat-insulating board is provided exactly; Its working method is that mainly to adopt feldspar be main raw material; Be equipped with appropriate amount of quartz sand, coarse whiting, add the part auxiliary material, utilize Al 2O 3-CaO-SiO 2Crystalline phase figure according to specific prescription, mixes several kinds of raw material weighing; Drop into equably continuously after stirring in the fusing kiln, flow out the glass metal stock column from fusing kiln discharge port and directly become particle frit material with the cold water shrend, utilize drying line to dry particle frit material after; Be ground into the material powder of 30~200 order fineness with disintegrating apparatus; Add quantitative whipping agent then, in mixing machine, mix, utilize the compression moulding in mould of easy pressing device; Together put into the crystallization kiln together with mould and carry out the processing of rapid crystallization foaming heat by certain temperature schedule; The product that comes out after the demoulding is crystallite foam heat-insulating board blank flat, carries out the grinding and polishing cutting process then, is the crystallite foam heat-insulating board.It selects feldspar for use is main raw material, can use no or little MOX, and its product colour can add tinting material adjustment as required; This kind suitability for industrialized production reduces temperature of fusion greatly; Reduce crystallization and blowing temperature, shorten crystallization and foamed heat insulating time, raise labour productivity; Save the energy, and then reduce product cost significantly.
A kind of method of utilizing feldspar to produce the crystallite foam heat-insulating board of the present invention is utilized resourceful feldspar, after simple the pulverizing, is main raw material, and the feldspar Chemical Composition is silicon-dioxide (SiO 2), aluminum oxide (Al 2O 3), red stone (Fe 2O 3), potassium oxide (K 2O), sodium oxide (Na 2O), quicklime (CaO), barium oxide (BaO) etc., wherein staple is silicon-dioxide (SiO 2) content 60~75% and aluminum oxide (Al 2O 3) content 14~23%; Be equipped with appropriate amount of quartz sand, coarse whiting; Auxiliary material mainly contains industrial potassium titanate, calcined soda for industry, industrial borax, industrial zinc oxide, tinting material, oxygenant, finings etc.; These auxiliary materials are reasonably arranged in pairs or groups and are used for producing the crystallite foam heat-insulating board very favourablely, and especially the selection of tinting material is used with an amount of, can produce serial color crystallite foam heat-insulating boards such as white, beautiful cyan, green, blueness, grey, yellow, black.
A kind of method of utilizing feldspar to produce the crystallite foam heat-insulating board of the present invention, its prescription and production technique comprise the following steps:
1. mixing raw material: raw material is mixed by special formulation with suitable granularity, weight percent, puddle evenly:
Feldspar granularity 0.1~1.2mm 25~46%
Quartz sand size 0.1~0.7mm 18~35%
Coarse whiting granularity 0.1~2.2mm 16~33%
Calcined soda for industry 0~5%
Industrial borax 0~5.5%
Industrial potassium titanate 0~6.5%
Industry zinc oxide 0~6.5%
Finings 0~1%
Oxygenant 0~2.5%
Tinting material 0~6%
Wherein said tinting material comprises Cr 2O 3, CoO, CuO, nickel oxide, nickel protoxide, red stone, manganese oxide, cadmium red, cadmium yellow, selenium powder or the like have the raw material of coloring effect to micro-crystal board material;
2. high temperature melting: above-mentioned mixing raw material is put into glass furnace be fused into glass metal, 1420~1550 ℃ of temperature of fusion;
3. shrend: glass metal is flowed in the tank, and shrend becomes the particulate material of diameter 0~6 mm;
4. oven dry is pulverized: above-mentioned particulate material is dried with drying plant, be ground into fineness 30~200 powder materials with disintegrating apparatus then;
5. mix: above-mentioned powder is directly sent in the mixing equipment and added certain amount of foaming agent, mix, for use;
6. crystallization and foaming heat are handled: will the above-mentioned powder that mixes pack in the mould, put into crystallization foaming kiln and carry out crystallization and foaming heat processing, 750~1050 ℃ of crystallization and blowing temperatures, crystallization and foamed heat insulating time 10~60 minutes;
7. annealing kiln discharge: directly annealing in the crystallization foaming kiln is annealed to 150~200 ℃ of temperature, 3~10 hours time, kiln discharge cooling;
8. the demoulding: is the work in-process in the mould that crystallite foam heat-insulating board blank takes out, and places crystallite foam heat-insulating board blank zone, to be processed;
9. process and packing: crystallite foam heat-insulating board blank is cut mill, thrown and cut processing treatment, be packaged as finished product, for sale.
A kind of method of utilizing feldspar to produce the crystallite foam heat-insulating board of the present invention, its production technique divide four to go on foot greatly: the first step is produced qualified crystallite frit material; Add quantitative whipping agent in the powder after the second step oven dry is pulverized and mix; The 3rd step crystallization foaming kiln is pressed the specified temp system, the controlled crystallization and the crystallite foam heat-insulating board that foams out; The 4th step was mill cutting process and packing.The first step is exactly after mixing the raw material stirring of specific composition, through handling equipment and feeding equipment, continuously evenly to drop in the melt tank furnace, and the glass metal stock column that comes out is quenched into particulate material with cold water; Second step was exactly to utilize disintegrating apparatus these particulate material oven dry and having dried the microcrystal grain material, processed fineness 30~200 purpose crystallite material powder, directly sent into then to add quantitative whipping agent in the mixing machine and mix; The 3rd step was put into mould and compacting evenly according to after producing the product thickness weighing, put into crystallization foaming kiln and handled by specified temp system crystallization foaming heat, and thermal treatment finishes, and the demoulding obtains crystallite foam heat-insulating board blank; The 4th step was carried out processing treatment such as mechanical grinding and polishing, cutting to crystallite foam heat-insulating board blank, through the product that is up to the standards, was crystallite foam heat-insulating board finished product after the packing.This production technology characteristic is: the one, and the production of crystallite frit; The 2nd, flouring technology; The 3rd, add whipping agent and mix and adorn mould, this step has determined quality product and specification, influences product percent of pass, requires the powder of dress mould necessarily even; The 4th, controlled crystallization and foaming heat are handled; Promptly through specific temperature schedule control microcrystal size, gas release and size thereof; And then determined crystallite foam heat-insulating board performance; Be a most key step, adopt rapid sintering technique, very different with common entire body micro-crystal board material and regular foam glass; The 5th, the grinding and polishing cutting process because product weight is low weight, is convenient to transportation, relatively is suitable for the robotization production-lines.
Description of drawings:Fig. 1 utilizes feldspar to produce the method flow diagram of crystallite foam heat-insulating board for the present invention is a kind of.By raw material 1, mix to carry 2, fusing 3, shrend 4, oven dry 5, grinding 6, whipping agent 7, mix 8, weighing goes into that mould 9, crystallization and foaming heat handle 10, annealing 11, demoulding blank 12, cut mill 13, check 14, packing 15, finished product 16 and form.
Crystallite foam heat-insulating board with the inventive method production; Its internal structure is made up of glassy phase, crystal and pore three parts, and the structure principal crystalline phase is mainly β-wollastonite, and principal crystalline phase content accounts for 15~50%; Glassy phase, crystal phase and a large amount of small pore weave in; Improved the physical strength of material greatly, expanded regular foam glass applications limitation, the physical and chemical index of this kind crystallite foam heat-insulating board:
Unit weight: 820~1350 kg/m 3Water-intake rate: 3~22 vol%
Ultimate compression strength: 7~42 MPa folding strengths: 5~38 MPa
Heat resisting temperature: 450~820 ℃ of thermal conductivitys: 0.1~0.5 W/mk
The present invention is a kind of to utilize feldspar to produce the method for crystallite foam heat-insulating board, utilizes cheap feldspar abundant on the earth to be main raw material, need not or trace use commercial alumina and calcined soda for industry; Reduce raw materials cost greatly, micritization and foaming process carry out simultaneously, directly get into annealing process then; But continuous production, thus enhance productivity, and output improves; Save the energy, improve the business economic benefit.
Embodiment
are done below in conjunction with embodiment and are further described.
Embodiment one
Feldspar 42.31% silica sand 20.81% coarse whiting 25.39%
Industrial potassium titanate 4.19% calcined soda for industry 0.51% industrial zinc oxide 3.4%
Industrial borax 2.19% oxygenant 1% finings 0.2%
Tinting material 0%
Above-mentioned raw materials mixed puddle evenly, put into 1500 ℃ of temperature of smelting furnace warp and be fused into glass metal, become the particulate material below 6 mm through shrend again; After the drying plant oven dry, directly be ground into fineness 50 order crystallite powders, send in the mixing equipment then; And the adding certain amount of foaming agent, mix the dress mould of weighing; Put into crystallization foaming kiln internal heating to 960 and ℃ carry out controlled micritization and handle with foaming heat, 35 minutes crystallization foamed heat insulating time, directly annealing is slow then cools off; Be cooled to 150 ℃, 8.5 hours time, kiln discharge is after the demoulding, grinding and polishing, cutting obtain the white micro-crystals foam heat-insulating board.
Embodiment two
Feldspar 28.53% silica sand 30.57% coarse whiting 27.27%
Industrial potassium titanate 5.55% calcined soda for industry 1.03% industrial zinc oxide 3.24%
Industrial borax 2.21% oxygenant 0.5% finings 0.1%
Tinting material 1%
Above-mentioned raw materials mixed puddle evenly, put into 1480 ℃ of temperature of smelting furnace warp and be fused into glass metal, become the particulate material below 6 mm through shrend again; After the drying plant oven dry, directly be ground into fineness 100 order crystallite powders, send in the mixing equipment then; And the adding certain amount of foaming agent, mix the dress mould of weighing; Put into crystallization foaming kiln internal heating to 940 and ℃ carry out controlled micritization and handle with foaming heat, 30 minutes crystallization foamed heat insulating time, directly annealing is slow then cools off; Be cooled to 180 ℃, 8 hours time, kiln discharge is after the demoulding, grinding and polishing, cutting obtain beige crystallite foam heat-insulating board.
Embodiment three
Feldspar 32.68% silica sand 27.46% coarse whiting 27.66%
Industrial potassium titanate 5.45% calcined soda for industry 1.10% industrial zinc oxide 3.08%
Industrial borax 2.17% oxygenant 0% finings 0.3%
Tinting material 0.1%
Above-mentioned raw materials mixed puddle evenly, put into 1440 ℃ of temperature of smelting furnace warp and be fused into glass metal, become the particulate material below 6 mm through shrend again; After the drying plant oven dry, directly be ground into fineness 150 order crystallite powders, send in the mixing equipment then; And the adding certain amount of foaming agent, mix the dress mould of weighing; Put into crystallization foaming kiln internal heating to 880 and ℃ carry out controlled micritization and handle with foaming heat, 25 minutes crystallization foamed heat insulating time, directly annealing is slow then cools off; Be cooled to 160 ℃, 7.5 hours time, kiln discharge is after the demoulding, grinding and polishing, cutting obtain light grey crystallite foam heat-insulating board.

Claims (4)

1. a method of utilizing feldspar to produce the crystallite foam heat-insulating board is characterized in that comprising the following steps:
Mixing raw material: the following granularity of raw material, weight percent are mixed by special formulation, puddle evenly:
Feldspar granularity 0.1~1.2mm 25~46%
Quartz sand size 0.1~0.7mm 18~35%
Coarse whiting granularity 0.1~2.2mm 16~33%
Calcined soda for industry 0~5%
Industrial borax 0~5.5%
Industrial potassium titanate 0~6.5%
Industry zinc oxide 0~6.5%
Finings 0~1%
Oxygenant 0~2.5%
Tinting material 0~6%
Wherein said tinting material comprises Cr 2O 3, CoO, CuO, nickel oxide, nickel protoxide, red stone, manganese oxide, cadmium red, cadmium yellow,
Selenium powders etc. have the raw material of coloring effect to micro-crystal board material;
(2). high temperature melting: above-mentioned mixing raw material is put into smelting furnace be fused into glass metal, 1420~1550 ℃ of temperature of fusion;
(3). shrend: glass metal is flowed in the tank, and shrend becomes the particulate material of diameter 0~6 mm;
Oven dry is pulverized: above-mentioned particulate material is dried with drying plant, be ground into fineness 30~200 powder materials with disintegrating apparatus then;
Mix: above-mentioned powder is directly sent in the mixing equipment and added certain amount of foaming agent, mix, for use;
(6). crystallization and foaming heat are handled: in the mould of will the above-mentioned powder that mixes packing into, put into the crystallization kiln that foams and carry out crystallization and foaming
Thermal treatment, 750~1050 ℃ of crystallization and blowing temperatures, crystallization and foamed heat insulating time 10~60 minutes;
(7). the annealing kiln discharge: directly annealing in the crystallization foaming kiln is annealed to 150~200 ℃ of temperature, 3~10 hours time, kiln discharge cooling;
(8). the demoulding: is the work in-process in the mould that crystallite foam heat-insulating board blank takes out, and places crystallite foam heat-insulating board blank zone,
To be processed;
(9). processing, check and packing: crystallite foam heat-insulating board blank is cut mill, thrown and cut processing treatment,, be packaged as finished product through after the assay was approved, for sale.
2. a kind of method of utilizing feldspar to produce the crystallite foam heat-insulating board according to claim 1; It is characterized in that the selection of whipping agent; The blowing temperature of whipping agent is consistent with the micritization heat treatment process of crystallite powder with gas release, when forming a large amount of microcrystals, also is that whipping agent forms the ideal suitable condition that enriches small even bubble.
3. a kind of method of utilizing feldspar to produce the crystallite foam heat-insulating board according to claim 1, it is characterized in that production technique divided for four steps greatly: the first step is produced qualified crystallite frit material; Add quantitative whipping agent in the powder after the second step oven dry is pulverized and mix; The 3rd step crystallization foaming kiln is pressed the specified temp system, the controlled crystallization and the crystallite foam heat-insulating board that foams out; The 4th step was mill cutting process and packing; The first step is exactly after mixing the raw material stirring of specific composition, through handling equipment and feeding equipment, continuously evenly to drop in the melt tank furnace, and the glass metal stock column that comes out is quenched into particulate material with cold water; Second step was exactly to utilize disintegrating apparatus these particulate material oven dry and having dried the microcrystal grain material, processed fineness 30~200 purpose crystallite material powder, directly sent into then to add quantitative whipping agent in the mixing machine and mix; The 3rd step was put into mould and compacting evenly according to after producing the product thickness weighing, put into crystallization foaming kiln and handled by specified temp system crystallization foaming heat, and thermal treatment finishes, and the demoulding obtains crystallite foam heat-insulating board blank; The 4th step was carried out processing treatment such as mechanical grinding and polishing, cutting to crystallite foam heat-insulating board blank, through the product that is up to the standards, was crystallite foam heat-insulating board finished product after the packing; This production technology characteristic is: the one, and the production of crystallite frit; The 2nd, flouring technology; The 3rd, add whipping agent and mix and adorn mould, this step has determined quality product and specification, influences product percent of pass, requires the powder of dress mould necessarily even; The 4th, controlled crystallization and foaming heat are handled; Promptly through specific temperature schedule control microcrystal size, gas release and size thereof; And then determined crystallite foam heat-insulating board performance; Be a most key step, adopt rapid sintering technique, very different with common entire body micro-crystal board material and regular foam glass; The 5th, the grinding and polishing cutting process because product weight is low weight, is convenient to transportation, relatively is suitable for the robotization production-lines.
4. a kind of method of utilizing feldspar to produce the crystallite foam heat-insulating board according to claim 1, it is characterized in that its Production Flow Chart by raw material 1, mix carry 2, fusing 3, shrend 4, oven dry 5, grinding 6, whipping agent 7, mix 8, weighing goes into that mould 9, crystallization and foaming heat handle 10, annealing 11, demoulding blank 12, cut mill 13, check 14, packing 15, finished product 16 and form; With the crystallite foam heat-insulating board that the inventive method is produced, its internal structure is made up of glassy phase, crystal and pore three parts, the structure principal crystalline phase be mainly β-
Wollastonite, its physical and chemical index:
Unit weight: 820~1350 kg/m 3Water-intake rate: 3~22 vol%
Ultimate compression strength: 7~42 MPa folding strengths: 5~38 MPa
Heat resisting temperature: 450~820 ℃ of thermal conductivitys: 0.1~0.5 W/mk.
CN2011104124724A 2011-12-13 2011-12-13 Method for producing microcrystalline foam insulating sheet material by utilizing feldspar Pending CN102515478A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107129271A (en) * 2017-07-05 2017-09-05 徐忠 A kind of method that foamed ceramic panel is made of ceramic polished waste residue
CN108908141A (en) * 2018-08-23 2018-11-30 沈阳中科超硬磨具磨削研究所 A kind of preparation method of vitrified bond

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107129271A (en) * 2017-07-05 2017-09-05 徐忠 A kind of method that foamed ceramic panel is made of ceramic polished waste residue
CN108908141A (en) * 2018-08-23 2018-11-30 沈阳中科超硬磨具磨削研究所 A kind of preparation method of vitrified bond

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Application publication date: 20120627