CN102674386A - Artificial lens synthetic mica - Google Patents
Artificial lens synthetic mica Download PDFInfo
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- CN102674386A CN102674386A CN2012101956808A CN201210195680A CN102674386A CN 102674386 A CN102674386 A CN 102674386A CN 2012101956808 A CN2012101956808 A CN 2012101956808A CN 201210195680 A CN201210195680 A CN 201210195680A CN 102674386 A CN102674386 A CN 102674386A
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Abstract
The invention relates to artificial lens synthetic mica which is prepared from the following raw material in percentage by weight: 34%-36% of quartz sand, 11%-13% of alumina, 28%-30% of fused magnesite, 18%-21% of potassium fluosilicate and 3%-5% of potassium carbonate. A preparation method of the artificial lens synthetic mica comprises the following steps of: 1) dosing, stirring and mixing uniformly for later use; 2) manufacturing a vessel; and 3) adding raw materials uniformly stirred and mixed in the step 1 into the vessel, switching on a three-phase power supply and performing electrothermal igneous fusion on the raw materials in the vessel according to four phases of arc strike, heating-up, heat preservation and cooling, so as to prepare the artificial lens synthetic mica. The artificial lens synthetic mica has the advantages of strong light permeability, high mechanical property, good heat-resistant performance, stable electrolysis performance, high corrosion resistance and less air release rate under vacuum; and the preparation method can be used for utilizing energy sources more effectively, saving energy sources, lowering the cost and preparing the artificial lens synthetic mica with high quality.
Description
Technical field
The present invention relates to mica, refer in particular to a kind of artificial crystal synthesized mica.
Background technology
Mica is a kind of crystalline substance, and it has good insulativity, and erosion resistance and resistant to elevated temperatures characteristics are widely used in every field.As in fields such as electrical equipment, paint, chemical industry, makeup and space flight.The normal natural mica that uses exists a lot of not enoughly in the prior art, mainly is can not satisfy the requirements at the higher level in the use in erosion resistance, aspect high temperature resistant.Natural muscovite is that the fusion phlogopite also can fusion during at 600-800 ℃ at 400-500 ℃ on high temperature resistant.
Summary of the invention
The objective of the invention is to improve and innovate, a kind of artificial crystal synthesized mica is provided to the shortcoming that exists in the background technology and problem.
The present invention is processed by following raw materials by weight percent:
Silica sand 34%-36%, aluminum oxide 11%-13%, electrosmelted magnesite clinker 28%-30%, potassium silicofluoride 18%-21%, salt of wormwood 3%-5%;
The making method of said artificial crystal synthesized mica may further comprise the steps:
1) above-mentioned each raw material is prepared in proportion puts into mixing equipment and stir the companion to mix the back subsequent use;
2) make container: with the fire-resistant brick bulge that goes out; Directly through being 2.5 meters, the cross-sectional diameter of top and bottom is 2.2 meters for 2.3 meters of the height of container, intermediary maximum cross section; The inventory of one stove is about 19 tons; Be uniformly distributed with the heating electrode of three 200 * 1000 * 50mm at internal tank, and at container the circular heating rod of a 85 * 100mm be set and be connected with the perpendicular rod of the circular heating of a 40 * 100mm, the circle that connects 40 * 100mm with the arc electrode rod of 8mm at last heat erect excellent;
3) will be through 1) raw material that mixes of step adds in the said vesse, and connect three-phase supply and the raw material in the container is carried out electric heating igneous fusion make artificial crystal synthesized mica;
Said calcining process adopts power invariability intensification, falling temperature method to calcine, and supervisory control desk branch I shelves (400V), II shelves (200V), III shelves (100V) are operated, and whole calcination process is divided into striking, intensification, insulation, cooling four-stage:
(1) striking: after connecting three-phase supply, the perpendicular rod of container internal heating electrode upper end "
△" connect 8mm heating electrode rod and at first get into the striking that communicates; The electric current of input 200A continues about 20 minutes with the electric current of 200A, progressively increases electric current then, and small electrode is raise temperature, becomes the starting material around the small electrode rod molten state and replaces the small electrode rod and conduct electricity; Whole striking finishes, and about about 1 hour of used time, this moment, current value was 50-60A, and voltage is 360V-400V, and is continuous and change the temperature rise period over to;
(2) heat up: striking is transferred to I shelves (400V) with the gear of supervisory control desk after finishing, the calcining that heats up, and along with the increase of power, electric current, voltage, the heat that electrode bar produces also increases; Also high-temperature digestion one-tenth is liquid gradually for starting material around the electrode bar; Such intensification continues after 7 hours; Starting material in the container become molten state gradually, and can vacate space in the container this moment, continue to add follow-up raw material again; Know in the chamber of entire container all to be full of the fused starting material reinforced stopping; In this stage,, and to make raw material all become molten state because raw material is more and more in the container; This moment, corresponding current value will raise gradually, and last current value is 1000A-1200A, and magnitude of voltage is 200V-220V; Performance number is 220W; The interior temperature of container this moment is approximately about 2300 ℃, and whole intensification is approximately wanted 13-15 hour, and can get into holding stage this moment;
(3) insulation: the gear of supervisory control desk is transferred to II shelves (200V) carries out power invariability insulation calcining; The optimum value of power invariability is 220W, constant insulation calcining 20 hours, and current value is 1700A-1800A, voltage is 70-80V, can change temperature-fall period over to;
(4) cooling: cooling forms mica crystal, the gear of supervisory control desk is transferred to III shelves (100V) lowers the temperature, and reduces current value and magnitude of voltage gradually, makes the material cooled and solidified slowly in the container; The employing power 10W that per hour descends is crossed in whole cooling, at 9-12 hour power is reduced to 100W, the blowing out of can cutting off the power supply, and slowly to make its spontaneous nucleation, decay period be 7 days in cooling; The temperature that crystal is deviate from container is not less than 40 ℃; Punch in the crystalline region of interest then, and in its hole, inject expansive cement, the crystal piecemeal is split; According to different purposes sheet granularity Different products is processed in this synthetic mica fragmentation, preserves through the packing of classification after the assay was approved warehouse-in.
The purity of each raw material of the present invention is:
Silica sand 97%-99%, aluminum oxide 94%-96%, electrosmelted magnesite clinker 96%-99%, potassium silicofluoride 97%-99%, salt of wormwood 97%-99%.
Each raw material of the present invention is Powdered, pulverizes specification to be:
Silica sand 60 orders-120 order, aluminum oxide 140 orders-250 order, electrosmelted magnesite clinker 160 orders-325 order, potassium silicofluoride 140 orders-250 order, salt of wormwood 120 orders-200 order.
Each raw material water cut of the present invention is:
Silica sand≤0.5%, aluminum oxide≤0.5%, electrosmelted magnesite clinker≤0.5%, potassium silicofluoride≤0.5%, salt of wormwood≤0.5%.
Advantage of the present invention and beneficial effect:
1, the present invention has very strong light transmission, and sheet mica is smooth, smooth, transparency is considerably beyond natural mica.
2, mechanical property of the present invention is high, and it is prone to peel off in flakes than Sweet natural gas mica at normal temperatures.
3, resistance toheat of the present invention is good, and synthetic mica does not deform in heating 1200 ℃ basically, and natural mica just begins decomposition, expansion thickening, weightless serious from 450-650 ℃.This micaceous fusing point or recrystallization temperature are 1350 ℃, and its moisture-free helps its high-temperature stability high more a lot of than natural mica.
4, electrolysis stable performance of the present invention, this synthetic mica be because purity is high, and test performance is comparatively stable, and natural mica is under high temperature test, and fluctuation ratio is bigger.
5, erosion resistance of the present invention is high, and this synthetic mica has good chemicalstability, in the acid-base solution of various concentration, chemical reaction does not take place all at normal temperatures; Because its purity is high, under the washing away of normal temperature high voltage water, hydration reaction does not take place, can keep original clear and transparency basically.
6, the venting rate is little under the vacuum of the present invention, because this synthetic mica does not have water molecules, therefore, discharge quantity is extremely low under vacuum high-temperature, and is very favourable to making the vacuum insulation device, the work-ing life that can improve device greatly.
7, making method of the present invention is through test of many times, invented three-phase current unbalance and perplexing the solution of three phase supply calcining artificial crystal synthesized mica development, and more effective use of energy sources is saved the energy, reduces cost.Make at the calcining artificial crystal synthesized mica and established good basis, obtain high-quality artificial crystal synthesized mica.Prescription provided by the invention, the artificial crystal synthesized mica that equipment, manufacture craft flow process obtain the fine people provides safe guarantee.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1:
1,10 tons of inventories of proportioning, the weight percent usage quantity of each raw material is: 34.5% silica sand, 12.5% aluminum oxide, 28.5% electrosmelted magnesite clinker, 19.5% potassium silicofluoride and 5% salt of wormwood prepare and put into mixing equipment and stir the companion to mix the back subsequent use.
2, make container: with the fire-resistant brick bulge that goes out; 2.3 meters of the height of container; Directly through being 2.5 meters, the cross-sectional diameter of top and bottom is 2.2 meters in the intermediary maximum cross section, is uniformly distributed with the heating electrode of three 200 * 1000 * 50mm at internal tank; And at container the circular heating rod of 85 * 100mm is set and is connected with the perpendicular rod of the circular heating of a 40 * 100mm, the circle that connects 40 * 100mm with the arc electrode rod of 8mm at last heat erect excellent.
3, will add through the raw material that 1 step mixed in the said vesse, the connection three-phase supply carries out electric heating igneous fusion to the raw material in the container and makes artificial crystal synthesized mica.
What said calcining was adopted is that power invariability heats up, falling temperature method is calcined, and supervisory control desk branch I shelves (400V), II shelves (200V), III shelves (100V) are operated.Whole calcination process is divided into striking, intensification, insulation, cooling four-stage:
1) striking: after connecting three-phase supply, the perpendicular rod of container internal heating electrode upper end "
△" connect 8mm heating electrode rod and at first get into and communicate, our striking of saying that Here it is.The electric current of input 200A continues 20 minutes with the electric current of 200A, progressively increases electric current then, and small electrode is raise temperature, becomes the starting material around the small electrode rod molten state and replaces the small electrode rod and conduct electricity.Whole striking finishes, and the used time is 1 hour, and this moment, current value was 50A, and voltage is 360V, and is continuous and change the temperature rise period over to.
2) heat up: striking is transferred to I shelves (400V) with the gear of supervisory control desk after finishing, the calcining that heats up, and along with the increase of power, electric current, voltage, the heat that electrode bar produces also increases.Also high-temperature digestion one-tenth is liquid gradually for starting material around the electrode bar; Such intensification continues after 7 hours; Starting material in the container become molten state gradually, and can vacate space in the container this moment, continue to add follow-up raw material again; Know in the chamber of entire container all to be full of the fused starting material reinforced stopping.In this stage,, and to make raw material all become molten state because raw material is more and more in the container; This moment, corresponding current value will raise gradually, and last current value is 1000A, and magnitude of voltage is 200V; Performance number is 220W; The interior temperature of container this moment is 2300 ℃, and whole intensification is wanted 13 hours, and can get into holding stage this moment.
3) insulation: the gear of supervisory control desk is transferred to II shelves (200V) is incubated calcining.What the present invention adopted is the power invariability thermal-insulating method, and so-called power invariability keeps power constant exactly.Prove that through research and production operation the optimum value of power invariability is 220W, so constant heating means can make material molecule, ion more fully spread, and Impurity removal is also more thorough.Constant insulation calcining 20 hours, current value is 1700A, voltage is 70, can change temperature-fall period over to.
4) cooling: cooling forms mica crystal, the gear of supervisory control desk is transferred to III shelves (100V) lowers the temperature, and reduces current value and magnitude of voltage gradually, makes the material cooled and solidified slowly in the container.The cooling rate of whole temperature-fall period formula should be appropriate, and whole temperature-fall period should be accomplished in 9 hours, if it is too fast to lower the temperature, the crystal whereabouts of generation is mixed and disorderly, and directional property is poor, and the sheet mica of generation is little and unordered; Temperature fall time is long, can prolong fabrication cycle and increase cost.The present invention adopts the power 10W that per hour descends, and at 9 hours power is reduced to 100W, the blowing out of can cutting off the power supply, and slowly cooling was generally its spontaneous nucleation, decay period 7 days.In addition, the temperature that crystal is deviate from container is 40 ℃, punches in the crystalline region of interest then; And in its hole, inject expansive cement; The crystal piecemeal is split, sheet granularity Different products is processed in this synthetic mica fragmentation, preserve through the packing of classification after the assay was approved warehouse-in according to purposes.Embodiment 2:
1,15 tons of inventories of proportioning, the weight percent usage quantity of each raw material is: 35% silica sand, 11% aluminum oxide, 29% electrosmelted magnesite clinker, 20% potassium silicofluoride and 5% salt of wormwood prepare and put into mixing equipment and stir the companion to mix the back subsequent use.
2, make container: with the fire-resistant brick bulge that goes out; 2.3 meters of the height of container; Directly through being 2.5 meters, the cross-sectional diameter of top and bottom is 2.2 meters in the intermediary maximum cross section, is uniformly distributed with the heating electrode of three 200 * 1000 * 50mm at internal tank; And at container the circular heating rod of 85 * 100mm is set and is connected with the perpendicular rod of the circular heating of a 40 * 100mm, the circle that connects 40 * 100mm with the arc electrode rod of 8mm at last heat erect excellent.
3, will add through the raw material that 1 step mixed in the said vesse, the connection three-phase supply carries out electric heating igneous fusion to the raw material in the container and makes artificial crystal synthesized mica.
What said calcining was adopted is that power invariability heats up, falling temperature method is calcined, and supervisory control desk branch I shelves (400V), II shelves (200V), III shelves (100V) are operated.Whole calcination process is divided into striking, intensification, insulation, cooling four-stage:
1) striking: after connecting three-phase supply, the perpendicular rod of container internal heating electrode upper end "
△" connect 8mm heating electrode rod and at first get into and communicate, our striking of saying that Here it is.The electric current of input 200A continues 20 minutes with the electric current of 200A, progressively increases electric current then, and small electrode is raise temperature, becomes the starting material around the small electrode rod molten state and replaces the small electrode rod and conduct electricity.Whole striking finishes, and 1 hour used time, this moment, current value was 60A, and voltage is 400V, and is continuous and change the temperature rise period over to.
2) heat up: striking is transferred to I shelves (400V) with the gear of supervisory control desk after finishing, the calcining that heats up, and along with the increase of power, electric current, voltage, the heat that electrode bar produces also increases.Also high-temperature digestion one-tenth is liquid gradually for starting material around the electrode bar; Such intensification continues after 7 hours; Starting material in the container become molten state gradually, and can vacate space in the container this moment, continue to add follow-up raw material again; Know in the chamber of entire container all to be full of the fused starting material reinforced stopping.In this stage,, and to make raw material all become molten state because raw material is more and more in the container; This moment, corresponding current value will raise gradually, and last current value is 1200A, and magnitude of voltage is 220V; Performance number is 220W; The interior temperature of container this moment is 2300 ℃, and whole intensification is wanted 15 hours, and can get into holding stage this moment.
3) insulation: the gear of supervisory control desk is transferred to II shelves (200V) is incubated calcining.What the present invention adopted is the power invariability thermal-insulating method, and so-called power invariability keeps power constant exactly.Prove that through research and production operation the optimum value of power invariability is 220W, so constant heating means can make material molecule, ion more fully spread, and Impurity removal is also more thorough.Constant insulation calcining 20 hours, current value is 1800A, voltage is 80V, can change temperature-fall period over to.
4) cooling: cooling forms mica crystal, the gear of supervisory control desk is transferred to III shelves (100V) lowers the temperature, and reduces current value and magnitude of voltage gradually, makes the material cooled and solidified slowly in the container.The cooling rate of whole temperature-fall period formula should be appropriate, and whole temperature-fall period was accomplished in 12 hours, if it is too fast to lower the temperature, the crystal whereabouts of generation is mixed and disorderly, and directional property is poor, and the sheet mica of generation is little and unordered; Temperature fall time is long, can prolong fabrication cycle and increase cost.The present invention adopts the power 10W that per hour descends, and at 12 hours power is reduced to 100W, the blowing out of can cutting off the power supply, and slowly cooling was generally its spontaneous nucleation, decay period 7 days.In addition, the temperature that crystal is deviate from container is 40 ℃, punches in the crystalline region of interest then; And in its hole, inject expansive cement; The crystal piecemeal is split, sheet granularity Different products is processed in this synthetic mica fragmentation, preserve through the packing of classification after the assay was approved warehouse-in according to purposes.
Embodiment of the present invention only is the description that preferred implementation of the present invention is carried out; Be not that design of the present invention and scope are limited; Under the prerequisite that does not break away from design philosophy of the present invention, engineering technical personnel make technical scheme of the present invention in this area various modification and improvement all should fall into protection scope of the present invention; The technology contents that the present invention asks for protection all is documented in claims.
Claims (4)
1. artificial crystal synthesized mica is characterized in that it is processed by following raw materials by weight percent:
Silica sand 34%-36%, aluminum oxide 11%-13%, electrosmelted magnesite clinker 28%-30%, potassium silicofluoride 18%-21%, salt of wormwood 3%-5%;
The making method of said artificial crystal synthesized mica may further comprise the steps:
1) above-mentioned each raw material is prepared in proportion puts into mixing equipment and stir the companion to mix the back subsequent use;
2) make container: with the fire-resistant brick bulge that goes out; Directly through being 2.5 meters, the cross-sectional diameter of top and bottom is 2.2 meters for 2.3 meters of the height of container, intermediary maximum cross section; The inventory of one stove is about 19 tons; Be uniformly distributed with the heating electrode of three 200 * 1000 * 50mm at internal tank, and at container the circular heating rod of a 85 * 100mm be set and be connected with the perpendicular rod of the circular heating of a 40 * 100mm, the circle that connects 40 * 100mm with the arc electrode rod of 8mm at last heat erect excellent;
3) will be through 1) raw material that mixes of step adds in the said vesse, and connect three-phase supply and the raw material in the container is carried out electric heating igneous fusion make artificial crystal synthesized mica;
Said calcining process adopts power invariability intensification, falling temperature method to calcine, and supervisory control desk branch I shelves (400V), II shelves (200V), III shelves (100V) are operated, and whole calcination process is divided into striking, intensification, insulation, cooling four-stage:
(1) striking: after connecting three-phase supply, the perpendicular rod of container internal heating electrode upper end "
△" connect 8mm heating electrode rod and at first get into the striking that communicates; The electric current of input 200A continues about 20 minutes with the electric current of 200A, progressively increases electric current then, and small electrode is raise temperature, becomes the starting material around the small electrode rod molten state and replaces the small electrode rod and conduct electricity; Whole striking finishes, and about about 1 hour of used time, this moment, current value was 50-60A, and voltage is 360V-400V, and is continuous and change the temperature rise period over to;
(2) heat up: striking is transferred to I shelves (400V) with the gear of supervisory control desk after finishing, the calcining that heats up, and along with the increase of power, electric current, voltage, the heat that electrode bar produces also increases; Also high-temperature digestion one-tenth is liquid gradually for starting material around the electrode bar; Such intensification continues after 7 hours; Starting material in the container become molten state gradually, and can vacate space in the container this moment, continue to add follow-up raw material again; Know in the chamber of entire container all to be full of the fused starting material reinforced stopping; In this stage,, and to make raw material all become molten state because raw material is more and more in the container; This moment, corresponding current value will raise gradually, and last current value is 1000A-1200A, and magnitude of voltage is 200V-220V; Performance number is 220W; The interior temperature of container this moment is approximately about 2300 ℃, and whole intensification is approximately wanted 13-15 hour, and can get into holding stage this moment;
(3) insulation: the gear of supervisory control desk is transferred to II shelves (200V) carries out power invariability insulation calcining; The optimum value of power invariability is 220W, constant insulation calcining 20 hours, and current value is 1700A-1800A, voltage is 70-80V, can change temperature-fall period over to;
(4) cooling: cooling forms mica crystal, the gear of supervisory control desk is transferred to III shelves (100V) lowers the temperature, and reduces current value and magnitude of voltage gradually, makes the material cooled and solidified slowly in the container; The employing power 10W that per hour descends is crossed in whole cooling, at 9-12 hour power is reduced to 100W, the blowing out of can cutting off the power supply, and slowly to make its spontaneous nucleation, decay period be 7 days in cooling; The temperature that crystal is deviate from container is not less than 40 ℃; Punch in the crystalline region of interest then, and in its hole, inject expansive cement, the crystal piecemeal is split; According to different purposes sheet granularity Different products is processed in this synthetic mica fragmentation, preserves through the packing of classification after the assay was approved warehouse-in.
2. artificial crystal synthesized mica according to claim 1 is characterized in that the purity of each raw material is:
Silica sand 97%-99%, aluminum oxide 94%-96%, electrosmelted magnesite clinker 96%-99%, potassium silicofluoride 97%-99%, salt of wormwood 97%-99%.
3. artificial crystal synthesized mica according to claim 1, it is Powdered to it is characterized in that each raw material is, and pulverizes specification to be:
Silica sand 60 orders-120 order, aluminum oxide 140 orders-250 order, electrosmelted magnesite clinker 160 orders-325 order, potassium silicofluoride 140 orders-250 order, salt of wormwood 120 orders-200 order.
4. artificial crystal synthesized mica according to claim 1 is characterized in that each raw material water cut is:
Silica sand≤0.5%, aluminum oxide≤0.5%, electrosmelted magnesite clinker≤0.5%, potassium silicofluoride≤0.5%, salt of wormwood≤0.5%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951654A (en) * | 2012-11-21 | 2013-03-06 | 四川雷得云母有限公司 | Production process for synthetizing mica artificially |
| CN103073011A (en) * | 2013-02-17 | 2013-05-01 | 华东理工大学 | Method for preparing synthetic mica under segmental control |
| CN104348065A (en) * | 2014-09-19 | 2015-02-11 | 安庆市汇鑫电器有限公司 | Production technology of mica plate of commutator |
| CN104818530A (en) * | 2015-04-21 | 2015-08-05 | 汕头保税区三宝光晶云母科技有限公司 | Crystal synthesis furnace and application thereof |
| CN104876234A (en) * | 2015-04-16 | 2015-09-02 | 汕头保税区三宝光晶云母科技有限公司 | Preparation method for manually synthesized fluorophlogopite |
| CN104876233A (en) * | 2015-04-16 | 2015-09-02 | 汕头保税区三宝光晶云母科技有限公司 | Method for preparing artificially synthesized fluorophlogopite |
| CN110467188A (en) * | 2019-09-20 | 2019-11-19 | 长江师范学院 | A kind of synthetic mica and its preparation method and application |
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2012
- 2012-06-14 CN CN2012101956808A patent/CN102674386A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951654A (en) * | 2012-11-21 | 2013-03-06 | 四川雷得云母有限公司 | Production process for synthetizing mica artificially |
| CN102951654B (en) * | 2012-11-21 | 2015-02-04 | 四川雷得云母有限公司 | Production process for synthetizing mica artificially |
| CN103073011A (en) * | 2013-02-17 | 2013-05-01 | 华东理工大学 | Method for preparing synthetic mica under segmental control |
| CN104348065A (en) * | 2014-09-19 | 2015-02-11 | 安庆市汇鑫电器有限公司 | Production technology of mica plate of commutator |
| CN104876234A (en) * | 2015-04-16 | 2015-09-02 | 汕头保税区三宝光晶云母科技有限公司 | Preparation method for manually synthesized fluorophlogopite |
| CN104876233A (en) * | 2015-04-16 | 2015-09-02 | 汕头保税区三宝光晶云母科技有限公司 | Method for preparing artificially synthesized fluorophlogopite |
| CN104818530A (en) * | 2015-04-21 | 2015-08-05 | 汕头保税区三宝光晶云母科技有限公司 | Crystal synthesis furnace and application thereof |
| CN104818530B (en) * | 2015-04-21 | 2017-03-08 | 汕头保税区三宝光晶云母科技有限公司 | A kind of Opacity in lens stove and its application |
| CN110467188A (en) * | 2019-09-20 | 2019-11-19 | 长江师范学院 | A kind of synthetic mica and its preparation method and application |
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Application publication date: 20120919 |