CN1065516C - Process and equipment for preparing nucleated glass using nepheline - Google Patents
Process and equipment for preparing nucleated glass using nepheline Download PDFInfo
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- CN1065516C CN1065516C CN96115271A CN96115271A CN1065516C CN 1065516 C CN1065516 C CN 1065516C CN 96115271 A CN96115271 A CN 96115271A CN 96115271 A CN96115271 A CN 96115271A CN 1065516 C CN1065516 C CN 1065516C
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- kiln
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Abstract
The present invention relates to a formula for preparing glass ceramic by using nephelite, which comprises nephelite powder, calcite powder, quartz sand, dolomite powder, fluorite powder, sodium carbonate, lithium carbonate, composite clarifying agents and toners. The materials are put into a melting furnace and molten into glass metal at 1400 to 1500 DEG C after being uniformly mixed, processed into slag particles of 2 to 6mm by water quenching, put into a tunnel type crystallization electrical kiln and crystallized at 850 to 1050 DEG C after being loaded into molds, annealed and taken out from the kiln after being crystallized for 30 to 60 minutes, and made into the finished products of the glass ceramic after being processed by mold releasing, milling and polishing. The present invention has the characteristics of low production cost, low crystallization temperature, short crystallization time, high labor productivity, output improved by 3 to 4 times, energy saving, etc.
Description
The present invention relates to a kind of Processes and apparatus that utilizes nepheline to prepare devitrified glass.
As everyone knows, devitrified glass has favorable mechanical performance and physicals, and its hardness is Mohs 6-9, and compressive strength is 6.3T/cm
2, folding strength is 487-1380Kg/cm
2, anti-middle hit intensity is 2.5-3.8Kg/cm
2, glossiness is the 70-120 degree, the coefficient of expansion is 61-77.5 (10/ ℃), and water-intake rate＜0.07%, wear-resisting loss is 0.49g/cm
2And good acid-fast alkali-proof performance arranged, therefore be widely used as building materials, sheet material, tubing etc., it also can cooperate with other metallic substance and be used to make high, refined, peak products such as the no-reinforcing-bar floor of high strength bearing, high pressure vessel, pressure piping, fermentor tank, building, hollow curtain wall penel, engine cylinder and airspace engine, aerospace barnacle, rocket spout.
Present minority industry advanced country such as the U.S., USSR (Union of Soviet Socialist Republics) and Japanese small serial production crystallized glass article.They are with pure chemistry raw material SiO
2, Al
2O
3, CaO, MgO etc. or mine tailing be formulated, its production method mainly contains two kinds, a kind of is rolling process, earlier with devitrified glass raw material mechanical pressing, and then carries out crystallization; Another kind is a water quenching, earlier the devitrified glass raw material is fused into the glass slag charge, and mechanical pressing or utilize the saggar moulding carries out crystallization at last again.
The inventor has applied for a kind of prescription and technology of utilizing flyash to prepare devitrified glass for main raw material in August, 1993, application number is 93115755.2, it also includes silicon-dioxide, calcium oxide, soda ash, aluminum oxide powder, zinc oxide, titanium dioxide and white arsenic etc. except flyash, its temperature of fusion is 1400-1600 ℃, crystallization temperature 900-1300 ℃, crystallization time 10 hours.
The purpose of this invention is to provide a kind of Processes and apparatus that utilizes nepheline to prepare devitrified glass.It selects nepheline for use is main raw material, can use no or little metal oxide, reduces production costs, and reduces crystallization temperature, shortens crystallization time, raises labour productivity, and saves the energy.
The nepheline powder KNa that the present invention selects for use
3(AlSi
4)
4Be a kind of alkaline rock, its Chemical Composition is SiO
254%, Al
2O
320.5%, Fe
2O
34.7%, FeO 1.8%, and Mn 0.09%, and CaO 2.8%, K6.94%, Na
2O 4.3%, TiO 1.8% and multiple rare earth element such as La, Ce, Py, Nd, Sm etc., and it is low silicon, high alumina, high ferro, is rich in rare earth element, and is very favourable to the devitrified glass component.
The said method for preparing devitrified glass of the present invention comprises the following steps:
1. spice: raw material is pressed column weight amount percentage mix together, puddle evenly;
Nepheline powder degree 0.1-0.7mm 35-65%
Calcite in powder granularity 0.1-0.3mm 12-20%
Quartz sand size 0.1-0.3mm 10-30%
Ground dolomite granularity 0.1-0.3mm 3-6%
Fluorite powder degree 0.1-0.3mm 0.5-1.5%
Sodium carbonate 3.5-4.5%
Quilonum Retard 1-3%
Compound clarifier 0.5-1%
Toning agent 0.02-3%
Wherein said toning agent comprises chromic oxide, cobalt oxide, cupric oxide, manganese oxide, cadmium red, cadmium yellow, selenium powder;
2. high temperature melting: above-mentioned compound is put into glass furnace be fused into glass metal, temperature of fusion 1400-1500 ℃;
3. shrend: make glass metal flow in the tank the cold slag charge that hits into diameter 2-6mm;
4. dress mould: above-mentioned slag charge is packed in the mould charging tray;
5. heating crystallization: above-mentioned dress mould slag charge is put into crystallization tunnel-like electrical kiln internal heating crystallization, crystallization temperature 850-1050 ℃, time 30-60 minute;
6. annealing kiln discharge: in the annealing of crystallization tunnel-like electrical kiln afterbody, annealing temperature 560-720 ℃, time 30-60 minute, annealing postcooling kiln discharge;
7. the demoulding: microcrystal glass plate behind the sintering is taken out from the mould charging tray;
8. last sheet glass to the demoulding grinds, polishes, cuts, and promptly obtains finished product.
The equipment of preparation devitrified glass is crystallization tunnel-like electrical kiln and matched mould charging tray, is equipped with sleeper 16 in this tunnel-like electrical kiln burner hearth 18, and sleeper is imbedded in the concrete foundation 1, on sleeper, be covered with rail 17, chassis 3 is arranged on rail, be placed with mould charging tray 4 on the chassis 3, the mould charging tray is by refractory cements 30-35%, expanded vermiculite 35-40%, float pearl 2-3%, the fine powder 10-15% of high alumina, haydite 2-3%, magnesium chloride 5%, GS-3 high-temperature agglomerant 5% mix ramming and form; The mould charging tray is the low heat absorption of lightweight, can reach the prerequisite that the charging tray heat absorption is no more than the product softening temperature substantially, does not produce stress, guarantees that microcrystal glass plate does not split not modification; Resistance wire be wrapped in porcelain tube 13 on be connected with terminal stud 12,13 of porcelain tubes are on the hole brick of ready-formed kiln wall 2, the porcelain tube 13 that is wound with resistance wire is horizontally above charging tray 4, slag charge is carried out top firing, the material distance is 65-75mm on resistive heater and the charging tray, this highly just in time is the photothermal best thermoisopleth scope of resistance wire, its maximum focus just in time acts on product surface, it is flat that surperficial material is melted rapidly, satisfied product and obtained big-pattern, surperficial macrobead melts slowly, the processing requirement that inner small-particle melts soon, reach the surface and melt and flat do not seethe with excitement again, thereby avoid producing the shortcoming of hole and bubble.In order to improve heat insulation effect in the kiln; below prefabricated refractory concrete kiln crown plate 7, be lined with pure aluminium silicate felt thermal insulation layer 6; scribble high-temperature fibre on these thermal insulation layer 6 surfaces and strengthen coating and coatings capable of preventing from far infrared radiation; on near chassis plate both sides kiln wall 2, be provided with sand seal groove 14; sand seal groove 14 is separated into upper heat and lower cold two portions with the kiln body; with the upper part stainless steel wicket 8 is housed at the sand seal groove; two groups of gears 9 are housed on the top of wicket post 10; wicket 8 is mentioned and put down by chain; at the external bread of kiln protection iron plate 15 is arranged, on kiln crown plate 7 and around the terminal stud, be filled with heat insulating pearlite material 11.
Mechanical property and physical and chemical index with the devitrified glass of prepared of the present invention are:
The acidproof rate 99.7% of proportion 2.5-2.8
105 ° of Mohs' hardness 6.5-7.5 glossiness
Tensile strength 275mpa water-intake rate＜0.001%
The alkaline-resisting rate 97% of folding strength 52mpa
The present invention's its major advantage compared with the prior art is, utilize natural nepheline for main raw material can with use metal oxide less, reduce raw materials cost greatly, reduce crystallization temperature and shorten crystallization time, but continuous production, thus enhance productivity, and output improves 3-4 doubly, save the energy, improve the business economic benefit.
Description of drawings:
Accompanying drawing is this specific equipment crystallization tunnel-like electrical kiln structure partial sectional view.
Embodiment one
Nepheline powder 50%, calcite in powder 18%, quartz sand 20%
Dolomite powder 5%, fluorite powder 1%, yellow soda ash 3.5%
Quilonum Retard 1.5%, compound clarifier 0.6%, chromic oxide 0.4%
Above-mentioned raw materials mixed puddle evenly, put into smelting furnace and be fused into glass metal through 1450 ℃ of temperature, become the 3mm slag particle through shrend again, pack in the mould charging tray, put into crystallization tunnel-like electrical kiln internal heating to 950 and ℃ carry out crystallization, 40 minutes time, then in this kiln afterbody annealing, 650 ℃ of annealing temperatures, 30 minutes time, kiln discharge is after the demoulding, grinding, polishing, cutting obtain grass green devitrified glass finished product.
Embodiment two
Nepheline powder 54%, calcite in powder 17%, quartz sand 15%
Ground dolomite 6%, fluorite powder 1%, yellow soda ash 3.5%
Quilonum Retard 1%, compound clarifier 0.5%, manganese oxide 2%
Above-mentioned raw materials mixed puddle evenly, put into smelting furnace and be fused into glass metal through 1400 ℃ of temperature, become the 3mm slag particle through shrend again, pack in the mould charging tray, put into crystallization tunnel-like electrical kiln internal heating to 870 and ℃ carry out crystallization, 40 minutes time, then in this kiln afterbody annealing, 580 ℃ of annealing temperatures, 30 minutes time, kiln discharge is after the demoulding, grinding, polishing, cutting obtain red sandalwood look devitrified glass finished product.
Embodiment three
Nepheline powder 39%, calcite in powder 20%, quartz sand 30%,
Ground dolomite 3%, fluorite powder 1%, yellow soda ash 4.5%,
Quilonum Retard 1.5%, compound clarifier 0.5%, cobalt oxide 0.02%
Above-mentioned raw materials mixed puddle evenly, put into smelting furnace and be fused into glass metal through 1480 ℃ of temperature, become the 3mm slag particle through shrend again, pack in the mould charging tray, put into crystallization tunnel-like electrical kiln internal heating to 970 and ℃ carry out crystallization, 40 minutes time, then in this kiln afterbody annealing, 650 ℃ of annealing temperatures, 30 minutes time, kiln discharge is after the demoulding, grinding, polishing, cutting obtain Hai Lanse devitrified glass finished product.
Claims (4)
1. a method of utilizing nepheline to prepare devitrified glass is characterized in that it comprises the following steps:
(1) spice: raw material is pressed column weight amount percentage mix together, puddle evenly;
Nepheline powder degree 0.1-0.7mm 35-65%
Calcite in powder granularity 0.1-0.3mm 12-20%
Quartz sand size 0.1-0.3mm 15-30%
Ground dolomite granularity 0.1-0.3mm 3-6%
Fluorite powder degree 0.1-0.3mm 0.5-1.5%
Sodium carbonate 3.5-4.5%
Quilonum Retard 1-3%
Compound clarifier 0.5-1%
Toning agent 0.02-3%;
(2) high temperature melting: above-mentioned compound is put into glass furnace be fused into glass metal, temperature of fusion 1400-1500 ℃;
(3) shrend: make glass metal flow in the tank the cold slag charge that hits into diameter 2-6mm;
(4) dress mould: above-mentioned slag charge is packed in the mould charging tray;
(5) heating crystallization: above-mentioned dress mould slag charge is put into crystallization tunnel-like electrical kiln internal heating crystallization, crystallization temperature 850-1050 ℃, time 30-60 minute;
(6) annealing kiln discharge: in the annealing of crystallization tunnel-like electrical kiln afterbody, annealing temperature 560-720 ℃, time 30-60 minute, annealing postcooling kiln discharge;
(7) demoulding: microcrystal glass plate behind the sintering is taken out from the mould charging tray;
(8) at last demoulding sheet glass is ground, polishes, cuts, promptly obtain finished product.
2. as the said method of claim 1, wherein said toning agent comprises chromic oxide, cobalt oxide, cupric oxide, manganese oxide, cadmium red, cadmium yellow, selenium powder.
3. equipment that is used to implement front claim 1 or 2 said methods, it is characterized in that it is a kind of crystallization tunnel-like electrical kiln, in this tunnel-like electrical kiln burner hearth (18), be equipped with sleeper (16), be equipped with rail (17) on the sleeper, chassis (3) is arranged on rail, be placed with mould charging tray (4) on the chassis, resistance wire (5) is wrapped in porcelain tube (13) and upward is connected with terminal stud (12); Porcelain tube (13) frame is on the hole brick of ready-formed kiln wall (2); below kiln crown plate (7), be lined with pure aluminium silicate felt thermal insulation layer (6); scribble high-temperature fibre on this thermal insulation layer (6) surface and strengthen coating and coatings capable of preventing from far infrared radiation; be provided with sand seal groove (14) near on the chassis plate both sides Yao Qiang (2); with the upper part stainless steel wicket (8) is housed at the sand seal groove; on the top of wicket post (10) two groups of gears (9) are housed; by chain wicket is mentioned; put down; at the external bread of kiln protection iron plate (15) is arranged; on kiln crown plate (7) and terminal stud (12) be filled with heat insulating pearlite material (11) on every side; the porcelain tube (13) that is wound with resistance wire is horizontally in the top of mould charging tray (4); charging tray is carried out top firing, and the distance of resistive heater and charging tray is 65-75mm.
4. according to the described equipment of claim 3, it is characterized in that mould charging tray (4) by refractory cements 30-35%, expanded vermiculite 35-40%, float pearl 2-3%, the fine powder 10-15% of high alumina, haydite 2-3%, magnesium chloride 5%, GS-3 high-temperature agglomerant 5% mix ramming and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115271A CN1065516C (en) | 1996-04-30 | 1996-04-30 | Process and equipment for preparing nucleated glass using nepheline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115271A CN1065516C (en) | 1996-04-30 | 1996-04-30 | Process and equipment for preparing nucleated glass using nepheline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1163868A CN1163868A (en) | 1997-11-05 |
| CN1065516C true CN1065516C (en) | 2001-05-09 |
Family
ID=5122547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96115271A Expired - Fee Related CN1065516C (en) | 1996-04-30 | 1996-04-30 | Process and equipment for preparing nucleated glass using nepheline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1065516C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089731C (en) * | 1998-07-10 | 2002-08-28 | 赵凤宇 | Preparation of devitrified glass pipe |
| CN1323972C (en) * | 2003-08-18 | 2007-07-04 | 赵凤宇 | Light glazed microcrystal glass material and manufacturing process |
| CN1799714B (en) * | 2005-01-07 | 2010-04-28 | 赵凤宇 | Method for separating and reutilizing urban solid garbage |
| CN100360446C (en) * | 2005-11-23 | 2008-01-09 | 山东建筑工程学院材料科学研究所 | Process for preparing microcrystal glass ceramic by concrete sludge |
| CN101870523B (en) * | 2009-04-22 | 2012-10-17 | 赵凤宇 | Melting tank process for producing glass ceramics by utilizing sewage generating and equipment thereof |
| CN102092949A (en) * | 2009-12-10 | 2011-06-15 | 淄博钰晶新型材料科技有限公司 | Formula and process for producing microcrystalline slabs by using medicinal stone |
| CN101941801A (en) * | 2010-07-30 | 2011-01-12 | 华原风积沙开发有限公司 | Microcrystalline glass plate and producing process thereof |
| CN106893922A (en) * | 2015-12-18 | 2017-06-27 | 赵凤宇 | A kind of low crystallization point devitrified glass and metal aluminium composite material and preparation method thereof |
| CN107382060B (en) * | 2017-08-14 | 2019-12-24 | 重庆昊晟玻璃股份有限公司 | Bottle manufacturing method |
| CN108821599A (en) * | 2018-09-06 | 2018-11-16 | 四川名微晶科技股份有限公司 | A method of devitrified glass is prepared using nepheline tailing as primary raw material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU518474A1 (en) * | 1975-01-14 | 1976-06-25 | Томский Ордена Трудового Красного Знамени Государственный Университет Им.В.В.Куйбышева | Glass crystal material |
| CN1072398A (en) * | 1992-09-28 | 1993-05-26 | 唐山市古冶玻璃制品厂 | Nucleated glass granite dalle and production technique |
-
1996
- 1996-04-30 CN CN96115271A patent/CN1065516C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU518474A1 (en) * | 1975-01-14 | 1976-06-25 | Томский Ордена Трудового Красного Знамени Государственный Университет Им.В.В.Куйбышева | Glass crystal material |
| CN1072398A (en) * | 1992-09-28 | 1993-05-26 | 唐山市古冶玻璃制品厂 | Nucleated glass granite dalle and production technique |
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| Publication number | Publication date |
|---|---|
| CN1163868A (en) | 1997-11-05 |
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