CN102795774A - Method for manufacturing nano microcrystal sheet material by utilizing quartz sand - Google Patents
Method for manufacturing nano microcrystal sheet material by utilizing quartz sand Download PDFInfo
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Abstract
The invention provides a method for manufacturing a nano microcrystal sheet material by utilizing quartz sand, which utilizes the resourceful quartz sand as a main raw material to produce the nano microcrystal sheet material. Auxiliary raw materials mainly comprise industrial aluminum oxide, calcium carbonate powder, dolomite, diopside, industrial soda ash, industrial barium carbonate, industrial zinc oxide, industrial borax, a coloring agent, an oxidant and a clarifying agent; the main production process comprises the following steps of: weighing the raw materials according to a specific combination formula, and mixing and uniformly agitating; putting the raw materials into a smelting kiln to smelt at 1450-1580 DEG C to form glass liquid; quenching a glass liquid material column by cold water to form grains with the size of 0-6 mm; then, utilizing drying equipment to dry water-quenched smelt block materials; preparing the dried smelt block materials by utilizing crushing equipment to prepare powder with the fineness being 20-180 meshes; utilizing simple pressing machine equipment to press the powder into a prepared mould and putting the mould into a crystallizing kiln to be rapidly micro-crystallized and sintered at 800-1050 DEG C according to a specific temperature mechanism, wherein the heat preservation time of micro-crystallization is 10-50 min; and then, annealing and drawing; and de-molding, milling, polishing, cutting and packaging to prepare a nano microcrystal sheet finished product. No air vent is formed on side face of the nano microcrystal sheet product and the nano microcrystal sheet product is excellent in physiochemical performance and environmentally-friendly; a production process is more suitable for an industrial assembly line process and the source of the raw materials is wide and easily available; and the method has the characteristics of being low in cost, short in crystallizing time, high in production efficiency, energy-saving and the like.
Description
Technical field:
Nano microcrystalline sheet material is a kind of silicate product among the present invention; Belong to the sheet material class; Range of application is more extensive, is mainly used in household electrical appliances furnace panel class and medium-to-high grade decorative boards, mainly is to utilize abundant and cheap silica sand to produce the method for nano microcrystalline sheet material.
Background technology:
1, the present situation of China's silica sand, application and purposes
Silica sand is a kind of silicate minerals of hard, wear-resisting, stable chemical performance, and its essential mineral composition is SiO
2, the pure person of quality is colourless, impure person has red, yellow, blue, black, brown, purple, green; Be clear to opaquely, property is crisp, and fracture is shelly or irregular shape, and crystal is hexagonal columnar; Cylinder tool band has the difference of left-handed crystal and right-handed crystal, and twin crystal is very general, is druse or granular, block aggregate usually; Hardness 7, density are 2.65, and its chemistry, calorifics and mechanical property have tangible anisotropy, are a kind of stable mineral under the normal temperature; Water insoluble and sulfuric acid, hydrochloric acid, nitric acid are slightly soluble in KOH solution, 1750 ℃ of fusing points.Silica sand is important industrial mineral raw material, except that staple silicon-dioxide, also contains a small amount of or micro-red stone, clay, mica and organic impurity.Main raw material as glass industry and ceramic industry is widely used in industry such as refractory materials, precision casting, electronics, smelting duriron, flux for metallurgy, building, chemical industry, plastics, rubber, abrasive material.
Silica sand is mainly classified and the Transport Package mode.Quartz has higher fire performance, in the industry silica sand often is divided into: common silica sand, refining silica sand, glass sand, fused quartz sand and silicon powder etc.Silica sand mode of transport automotive, train transportation, water transport.On the industrial production, generally adopt packaged such as 25KG, 50KG, ton bag.Granularity specification 20～180 orders commonly used mainly are 30～150 orders among the present invention.
The silica sand Application Areas.The physics of the uniqueness that silica sand had, chemical property; Make it in the IT industry of Aeronautics and Astronautics, electronics, machinery and current develop rapidly, occupy critical role; Particularly its inherent molecular chain structure, crystal shape and lattice variations rule; Make that it has high temperature resistant, thermal expansivity is little, high-insulation, corrosion-resistant, piezoelectric effect, resonance effect with and unique optical characteristics, in many high-tech products, bringing into play more and more important effect.
One, glass: main raw materials such as float glass, sheet glass, glasswork, opticglass, spun glass, glassware, conductive glass, special glass.
Two, pottery and refractory materials: the stock of porcelain and glaze, kiln is with the raw material of high silica brick, common silica brick and silit etc.
Three, metallurgy: the raw material of silicon metal, ferro-silicon, silumin etc. or additive, flux
Four, building: concrete, gelling material, road-making material, artificial marble etc.
Five, chemical industry: the raw material of silicon compound and water glass etc., the weighting material of sulfuric acid tower, soft silica micro mist
Six, machinery: the main raw material of foundry sand, abrasive substance
Seven, electronics: high purity metal silicon, communication are with optical fiber etc.
Eight, rubber, plastics: filler
Nine, coating: filler
Ten, Aeronautics and Astronautics: its inherent molecular chain structure, crystal shape and lattice variations rule, make that it has high temperature resistant, thermal expansivity is little, high-insulation, corrosion-resistant, piezoelectric effect, resonance effect with and unique optical characteristics.
Quartz is one of the widest mineral of earth surface distribution, and its purposes is also quite extensive.Far away from the Stone Age, people make simple means of production such as zax, Shi Jian with it, to hunt food and to resist the enemy.Be used as standard frequency to piezoid in crystal clock, the electronics; The glass of processing after the fusion can be used for making opticinstrument, glasses, Glass tubing and other products; Can also do the industrial raw material such as bearing, abrasive substance, glass-ceramic of precision instrument.From the whole country, the Xinyi, Lianyun Harbour, Fengyang, Anhui, Luoyang, Henan is the main producing region of quartz raw material, occupies 80% market in the whole nation.Its raw material purity is high, and output is well-known throughout the country greatly.
In sum, several kinds of main applications of China's silica sand: (1) glass, refractory materials, smelting duriron, flux for metallurgy, pottery, abrasive substance, one of main raw materials such as casting.(2) silicon-dioxide plays irreplaceable important foundation effect as the core material of silicon raw material in the production of silicon raw material and supply.The physics of the uniqueness that it had, chemical optics characteristic make it in many high-tech products, bring into play more and more important effect.(3) silica sand is high temperature resistant, thermal expansivity is little, high-insulation, corrosion-resistant, piezoelectric effect, resonance effect with and unique optical characteristics, in many high-tech products, bringing into play more and more important effect.The present invention utilizes silica sand to be main raw material, produces the method for nano microcrystalline plate, thereby opens up another the practicable method of silica sand industrial value that promotes.
2, nano microcrystalline plate characteristic
The nano microcrystalline plate; It is the matrix material that has good physical and chemical performance, forms by crystal and sosoloid that a kind of prescription of specific composition forms through the inner nucleus nano microcrystalline of temperature schedule control material process; Its Mohs' hardness is 5.5～8; Ultimate compression strength is 360～680MPa, and folding strength is 30～70MPa, and resistance to impact shock is 2.0～4.8Kg/cm
2, glossiness is 90～110 gloss unit, the coefficient of expansion is (1～80) * 10
-7/ ℃, water-intake rate＜0.05% has good acid-proof alkaline and good heat-shock resistance, under 500 degree temperature, directly puts into water or air and can not burst, and is whole excellent.Can be widely used as furnace panel, building and ornament materials, deck plate, wear-resisting acid and alkali-resistance foundry goods, sealing member etc.; Nano microcrystalline plate surface stain resistance after polishing is strong, acid and alkali-resistance, wear-resistant, do not fade, corrosion-resistant, safety, environmental protection, health, premium properties such as self-cleaning; Noble elegant; Gloss is beautiful; Be bound to make the nano microcrystalline plate to become the best substitute products of ceramic veneer of new generation, ceramic paster, and can be widely used in furnace panel series in the household electrical appliances, like electromagnetic oven panel, kitchen tools panel, kitchen range panel or the like.
Nano microcrystalline sheet material 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 nano microcrystalline 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:
The present invention utilizes silica sand to be main raw material; According to specific prescription, mix several kinds of raw material weighing, drop in the fusing kiln (industrial mass manufacture is generally used the horse shoe flame melt tank furnace) equably continuously after stirring; Flow out the glass metal stock column from fusing kiln discharge port and directly become particle frit material with the cold water shrend; After utilizing drying line oven dry particle frit material, be ground into the material sand and material powder of 20～180 order fineness with disintegrating apparatus, utilize the compression moulding in mould of easy pressing device; Together put into the crystallization kiln together with mould and carry out rapid crystallization thermal treatment by certain temperature schedule; The product that comes out after the demoulding is the nano microcrystalline boards half-finished product, carries out the grinding and polishing cutting process then, is nano microcrystalline sheet material.Its product colour can add tinting material adjustment as required, and this kind suitability for industrialized production reduces crystallization temperature greatly, shortens the crystallization soaking time, raises labour productivity, and saves the energy, and then reduces product cost significantly.
The present invention utilizes resourceful silica sand to be main raw material; Produce the method for nano microcrystalline plate; Auxiliary material mainly contains commercial alumina, Paris white, rhombspar, diopside, calcined soda for industry, industrial borax, industrial zinc oxide, tinting material, oxygenant, finings etc.; These auxiliary materials reasonably arrange in pairs or groups use for producing nano microcrystalline sheet material very favourable; And the nano microcrystalline plate of producing can carry out art breading such as stamp, engraving in its surface, reaches bright in luster beautiful, can certainly utilize amount of colorant to produce whole colored nano microcrystalline plate.
The present invention utilizes the method for silica sand for main material production nano microcrystalline plate, and its prescription and production technique comprise the following steps:
1. mixing raw material: raw material is mixed by special formulation by following granularity, weight percent, puddle evenly:
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 the nano microcrystalline plate;
2. high temperature melting: above-mentioned mixing raw material is put into melt tank furnace be fused into glass metal, 1450～1580 ℃ of temperature of fusion;
3. shrend: glass metal is flowed in the tank, and shrend becomes the particulate material of diameter 0～6mm;
4. oven dry: above-mentioned particulate material is dried with drying line;
5. pulverize: the particulate material after the oven dry is ground into 20～180 orders and packs for use with disintegrating apparatus;
6. dress mould: utilize simple and easy press continuously powder to be pressed in the mould of reserving equably;
7. nano microcrystallineization: the powder that suppresses is put into the crystallization kiln by certain temperature schedule micritization thermal treatment with mould; 800～1050 ℃ of crystallization temperatures; Micritization soaking time 10～50 minutes; The processing under cooling of annealing to kiln discharge temperature is lower than 100 ℃, and whole heat treatment process was accomplished in 2～8 hours;
8. the demoulding: take out the interior work in-process of mould and be the nano microcrystalline hair plates, to be processed;
9. grinding and polishing cutting process: the nano microcrystalline hair plates is ground, polishes, cuts, be packaged as finished product, for sale.
The method of nano microcrystalline sheet material of the present invention, its product processes divided for three steps: the first step is produced qualified frit material; Second step was produced the nano microcrystalline plate with the crystallization kiln; The 3rd step was the grinding and polishing cutting process.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, and these particulate material dry for standby; Second step was exactly to utilize disintegrating apparatus to the good particulate material for use of oven dry; Process the material powder of certain fineness, after producing the product thickness weighing, put into mould and compacting evenly; Put into the crystallization kiln by certain temperature schedule micritization thermal treatment; Thermal treatment finishes, and the demoulding obtains the nano microcrystalline hair plates; The 3rd step was carried out processing such as mechanical mill, polishing, cutting to the nano microcrystalline hair plates, through the product that is up to the standards, was the nano microcrystalline board finished product after the packing.This production technology characteristic is: the one, and the production of frit; The 2nd, flouring technology; The 3rd, Mold Making and the compacting of dress powder, this step has determined product specification, influences product percent of pass, the powder after requiring to suppress is necessarily even; The 4th, the nano microcrystalline heat-transmission is handled, and promptly certain temperature schedule is through specific temperature schedule control microcrystal size; And then the various premium propertiess of nano microcrystalline plate have been determined; Being a most key step, adopting rapid sintering technique, is different with common entire body crystallite plate; The 5th, the grinding and polishing cutting process, because product specification generally is not too big, and thickness relatively is suitable for the robotization production-lines often below 12mm, tends to polished tile ceramic thread postorder complete processing.
Figure is following for its technological process of production:
Raw material → mixing → fusing → shrend → dry → pulverize → be pressed into mould → micritization thermal treatment → kiln discharge → demoulding → grinding and polishing cutting → check → packing → finished product
With the nano microcrystalline plate that the inventive method is produced, the structure principal crystalline phase is mainly small β-wollastonite, diopside etc., and principal crystalline phase content accounts for 30～90%, general side pore-free, and the physical and chemical index of this kind nano microcrystalline plate is:
Major advantage of the present invention is to utilize resourceful silica sand to be main raw material, production nano microcrystalline plate, reduction crystallization temperature and shortening crystallization time, suitable continuous production, production efficiency height, output height, the saving energy, raising business economic benefit.
Do below in conjunction with embodiment and to further describe.
Embodiment one
Above-mentioned raw materials mixed puddle evenly, put into 1520 ℃ of temperature of smelting furnace warp and be fused into glass metal, become the particulate material below the 6mm through shrend again; Process 20～150 powder materials after the oven dry, and be pressed into mould, put into crystallization kiln internal heating to 1000 and ℃ carry out micritization thermal treatment; Crystallization soaking time 15 minutes, annealing cooling then is cooled to 100 ℃; 5 hours time, kiln discharge is after the demoulding, grinding, polishing, cutting obtain white nano microcrystalline board finished product.
Embodiment two
Above-mentioned raw materials mixed puddle evenly, put into 1550 ℃ of temperature of smelting furnace warp and be fused into glass metal, become the particulate material below the 6mm through shrend again; Process 20～150 powder materials after the oven dry, and be pressed into mould, put into crystallization kiln internal heating to 1050 and ℃ carry out micritization thermal treatment; Crystallization soaking time 10 minutes, annealing cooling then is cooled to 100 ℃; 5.5 hours time, kiln discharge is after the demoulding, grinding, polishing, cutting obtain white nano microcrystalline board finished product.
Embodiment three
Above-mentioned raw materials mixed puddle evenly, put into 1450 ℃ of temperature of smelting furnace warp and be fused into glass metal, become the particulate material below the 6mm through shrend again; Process 20～150 powder materials after the oven dry, and be pressed into mould, put into crystallization kiln internal heating to 850 and ℃ carry out micritization thermal treatment; Crystallization soaking time 20 minutes, annealing cooling then is cooled to 100 ℃; 4.5 hours time, kiln discharge is after the demoulding, grinding, polishing, cutting obtain oldlace nano microcrystalline board finished product.
Claims (4)
1. utilize the method for silica sand for main material production nano microcrystalline plate:
It is characterized in that comprising the following steps:
(1). mixing raw material: raw material is mixed by special formulation by following granularity, weight percent, puddle evenly:
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 the nano microcrystalline plate;
(2). high temperature melting: above-mentioned mixing raw material is put into melt tank furnace be fused into glass metal, 1450～1580 ℃ of temperature of fusion;
(3). shrend: glass metal is flowed in the tank, and shrend becomes the particulate material of diameter 0～6mm;
(4). oven dry: above-mentioned particulate material is dried with drying line;
(5). pulverize: the particulate material after the oven dry is ground into 20～180 orders and packs for use with disintegrating apparatus;
(6). dress mould: utilize simple and easy press continuously powder to be pressed in the mould of reserving equably;
(7). nano microcrystallineization: the powder that suppresses is put into the crystallization kiln by certain temperature schedule micritization thermal treatment with mould; 800～1050 ℃ of crystallization temperatures; Micritization soaking time 10～50 minutes; The processing under cooling of annealing to kiln discharge temperature is lower than 100 ℃, and whole heat treatment process was accomplished in 2～8 hours;
(8). the demoulding: take out the interior work in-process of mould and be the nano microcrystalline hair plates, to be processed;
(9). the grinding and polishing cutting process: the nano microcrystalline hair plates is ground, polishes, cuts, be packaged as finished product, for sale.
2. the method for utilizing silica sand for main material production nano microcrystalline sheet material according to claim 1 is characterized in that the silica sand requirement is following:
The granularity of silica sand is the most suitable at 0.1～0.7mm;
Its staple of silica sand is a silicon-dioxide, and molecular formula is SiO
2, be clear to opaquely, property is crisp, and crystal is hexagonal columnar, and proportion 2.65 Mohs' hardness 7 contain a small amount of or micro-aluminum oxide (Al
2O
3), red oxide of iron (Fe
2O
3) wait impurity.
3. the method for utilizing silica sand for main material production nano microcrystalline sheet material according to claim 1, it is characterized in that its production technique divided for three steps: the first step is produced qualified frit material; Second step was produced the nano microcrystalline plate with the crystallization kiln; The 3rd step was the grinding and polishing cutting process.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, and these particulate material dry for standby; Second step was exactly to utilize disintegrating apparatus to the good particulate material for use of oven dry; Process the material powder of certain fineness, after producing the product thickness weighing, put into mould and compacting evenly; Put into the crystallization kiln by certain temperature schedule micritization thermal treatment; Thermal treatment finishes, and the demoulding obtains the nano microcrystalline hair plates; The 3rd step was carried out processing such as mechanical mill, polishing, cutting to the nano microcrystalline hair plates, through the product that is up to the standards, was the nano microcrystalline board finished product after the packing.This production technology characteristic is: the one, and the production of frit; The 2nd, flouring technology; The 3rd, Mold Making and the compacting of dress powder, this step has determined product specification, influences product percent of pass, the powder after requiring to suppress is necessarily even; The 4th, the nano microcrystalline heat-transmission is handled, and promptly certain temperature schedule is through specific temperature schedule control microcrystal size; And then the various premium propertiess of nano microcrystalline plate have been determined; Being a most key step, adopting rapid sintering technique, is different with common entire body crystallite plate; The 5th, the grinding and polishing cutting process, because product specification generally is not too big, and thickness relatively is suitable for the robotization production-lines often below 12mm, tends to polished tile ceramic thread postorder complete processing.
4. the method for utilizing silica sand for main material production nano microcrystalline sheet material according to claim 1 is characterized in that its technological process of production is: raw material → mixing → fusing → shrend → dry → pulverize → be pressed into mould → micritization thermal treatment → kiln discharge → demoulding → grinding and polishing cutting → check → packing → finished product
With the nano microcrystalline sheet material that method of the present invention is produced, the structure principal crystalline phase is mainly small β-wollastonite, diopside etc., and principal crystalline phase content accounts for 30～90%, general side pore-free, and the physical and chemical index of this kind nano microcrystalline plate is:
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| CN103664138A (en) * | 2013-11-04 | 2014-03-26 | 铜陵市镜铁粉厂 | Iron oxide black-coal slag compound powder used as polished tile colorant |
| CN103922587A (en) * | 2014-03-13 | 2014-07-16 | 凤阳金星实业有限公司 | Hydrolysis resistant glass for vacuum bottle liner and preparation method thereof |
| CN104909566A (en) * | 2015-06-03 | 2015-09-16 | 张阳康 | Glass ceramic production process |
| CN107500550A (en) * | 2017-08-21 | 2017-12-22 | 韩东 | A kind of micro-crystalline ceramic cemetery |
| CN107824742A (en) * | 2017-11-27 | 2018-03-23 | 河南博威热能科技有限公司 | A kind of amorphous state moulding sand for casting and its manufacture method |
| CN108358453A (en) * | 2018-02-09 | 2018-08-03 | 贾有贵 | A kind of crystalline stone materials gravestone and preparation method thereof |
| CN109180143A (en) * | 2018-09-03 | 2019-01-11 | 岑金涛 | The composite foamed ceramic assembled building wall material of nano microcrystalline and its manufacturing method |
| CN109231962A (en) * | 2018-09-03 | 2019-01-18 | 岑金涛 | The composite foamed ceramic assembled building wall material of nano microcrystalline and its manufacturing method |
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2011
- 2011-05-27 CN CN2011101388468A patent/CN102795774A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103664138A (en) * | 2013-11-04 | 2014-03-26 | 铜陵市镜铁粉厂 | Iron oxide black-coal slag compound powder used as polished tile colorant |
| CN103922587A (en) * | 2014-03-13 | 2014-07-16 | 凤阳金星实业有限公司 | Hydrolysis resistant glass for vacuum bottle liner and preparation method thereof |
| CN103922587B (en) * | 2014-03-13 | 2016-03-16 | 凤阳金星实业有限公司 | A kind of inner container for thermos flask resistant to hydrolysis glass and preparation method thereof |
| CN104909566A (en) * | 2015-06-03 | 2015-09-16 | 张阳康 | Glass ceramic production process |
| CN107500550A (en) * | 2017-08-21 | 2017-12-22 | 韩东 | A kind of micro-crystalline ceramic cemetery |
| CN107824742A (en) * | 2017-11-27 | 2018-03-23 | 河南博威热能科技有限公司 | A kind of amorphous state moulding sand for casting and its manufacture method |
| CN107824742B (en) * | 2017-11-27 | 2019-08-02 | 河南博威热能科技有限公司 | A kind of amorphous state moulding sand for casting and its manufacturing method |
| CN108358453A (en) * | 2018-02-09 | 2018-08-03 | 贾有贵 | A kind of crystalline stone materials gravestone and preparation method thereof |
| CN109180143A (en) * | 2018-09-03 | 2019-01-11 | 岑金涛 | The composite foamed ceramic assembled building wall material of nano microcrystalline and its manufacturing method |
| CN109231962A (en) * | 2018-09-03 | 2019-01-18 | 岑金涛 | The composite foamed ceramic assembled building wall material of nano microcrystalline and its manufacturing method |
| CN112723739A (en) * | 2020-12-18 | 2021-04-30 | 新沂海福尔通用仪表有限公司 | Quartz pull tube and production process thereof |
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Application publication date: 20121128 |