CN105318739B - A kind of Processes and apparatus of regulation and control glass sand raw material crystal formation - Google Patents
A kind of Processes and apparatus of regulation and control glass sand raw material crystal formation Download PDFInfo
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- CN105318739B CN105318739B CN201410772798.1A CN201410772798A CN105318739B CN 105318739 B CN105318739 B CN 105318739B CN 201410772798 A CN201410772798 A CN 201410772798A CN 105318739 B CN105318739 B CN 105318739B
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Abstract
A kind of technique of regulation and control glass sand raw material crystal formation, glass sand raw material is added from furnace roof portion along hearth inner lining inclined-plane, in-furnace temperature is controlled at 600 DEG C 800 DEG C, it is heated to 900 DEG C of insulations, insulation continues to be heated to 1200 DEG C of 1300 DEG C of insulations after terminating, insulation terminates exhaust hood control unit automatically by discharging opening oven door opening, and raw material is quickly fallen from discharging opening, into next technique.A kind of equipment of regulation and control glass sand raw material crystal formation includes body of heater, heat-insulation layer, flame retardant coating, Si-Mo rod calandria, hearth inner lining, control panel, discharging opening fire door, discharging opening, air cylinder guide rod, cylinder, hearth inner lining four sides is inclined-plane and identical with the angle of vertical plane, Si-Mo rod calandria surrounding outside hearth inner lining is uniformly distributed, longitudinal arrangement, fire door is installed in discharging opening, air cylinder guide rod and cylinder are installed on fire door, realize that fire door is opened and closed.Present invention reduces energy resource consumption, automation is realized, production cost has been saved.
Description
Technical field
The present invention relates to a kind of production technology of regulation and control quartz crystal, more particularly to a kind of regulation and control glass sand raw material is brilliant
The Processes and apparatus of type.
Background technology
Glass sand is mainly used in new high-tech industry such as Aero-Space, bioengineering, Electronic Packaging, fiber optic communication
With the field such as military project.Only have aconteta to meet the preparation of glass sand in nature.But crystal reserves are limited, are
Done a lot of work in terms of glass sand is prepared with quartz mine purification and substitutes crystal this countries in the world.
An important technique prepared by glass sand is calcining.The purpose of calcining is the crystal formation of transformation quartz, quartz
Because larger volumetric expansion occurs for the transformation of crystal formation, big crackle will be produced because impurity is different with quartz expansion coefficient, so that
The solid impurity and gas liquid inclusion in quartz raw material can be removed, changes the processing characteristics etc. of quartz.Current domestic production factory
The calcining furnace that family uses mostly is chamber type electric resistance furnace, tunnel kiln etc..These calcining furnaces are horizontal type structure, and heating element heater is located at stove
Thorax both sides, its heating interval thermograde is larger, causes the calcining of quartz raw material uneven, and impurity component is removed not exclusively, and
And the burner hearth material of batch-type furnace is alumina refractories, most of quartz raw material is contained in canister, under high temperature
Metal impurities can be introduced.Material step also in this calcine technology is generally artificial operation at high temperature, adds danger.
The calcine technology that current domestic production producer uses is that in-furnace temperature directly is increased into 900 DEG C or so mostly, so
After be incubated a few hours.This technique does not account for the conversion of quartz crystal, and impurity and gas liquid inclusion can not be completely exposed, cause
Quartzy removal of impurities is insufficient, and difficulty is increased to follow-up impurity removal process.Intermittent charging not only increases energy resource consumption, and reduces life
Produce efficiency.
The content of the invention
For above-mentioned problem, it is an object of the invention to provide a kind of reasonable in design, saving energy, production effect is improved
The Processes and apparatus of the regulation and control glass sand raw material crystal formation of rate.
The technical scheme that the present invention takes is.
A kind of technique of regulation and control glass sand raw material crystal formation, is characterized in glass sand raw material from edge at the top of calcining furnace
Hearth inner lining inclined-plane is added, and in-furnace temperature control is heated to 900 DEG C at 600 DEG C -800 DEG C during addition, and heating rate is 4-6 DEG C/
Point, 1-2 hours are incubated, insulation continues to be heated to 1200 DEG C -1300 DEG C after terminating, and 8-10 DEG C/minute of heating rate, insulation 2-4 is small
When, it is automatic by discharging opening oven door opening that insulation terminates exhaust hood control unit, and the glass sand raw material calcined is from discharging opening
Quickly fall, into next technique.
It is a kind of regulate and control glass sand raw material crystal formation equipment, including body of heater, heat-insulation layer, flame retardant coating, Si-Mo rod calandria,
Hearth inner lining, control panel, discharging opening fire door, discharging opening, air cylinder guide rod, cylinder.Four faces of hearth inner lining be inclined-plane and with
The angle of vertical plane is identical, and the angle of inclined-plane and vertical plane is 10 ° -40 °, and liner pours material, silicon molybdenum using carborundum
Rod calandria surrounding outside hearth inner lining is uniformly distributed, longitudinal arrangement.Installation cylinder on fire door, fire door is installed in discharging opening to lead
Bar and cylinder, realize that fire door is opened and closed.Fire door is shaped as carrying by the structure composition of two identical shape and phase same materials
The block on inclined-plane, material is siliceous material.The inclined-plane of fire door is 20 ° -60 ° with horizontal plane angle scope.Control panel includes electricity
Source control, temperature control and cylinder control.
The technological principle of the present invention.
Quartz can produce the change of crystal formation at high temperature.When temperature is increased to 570 DEG C, 870 DEG C, quartz crystal becomes
Change, produce larger volumetric expansion, will be cracked because impurity is different with the coefficient of expansion of quartz, so that impurity and bag
Wrapping up in body can fully expose so that quartz particles become loose, be conducive to the removal of impurity and crush.The stone especially at 870 DEG C
English can be transformed into α-tridymite, and the Volume Changes of generation are maximum, reach 16%, but more than 1100 DEG C, and quartz inversion is into α-squama
It is quartzy to produce more crackles completely, it is more beneficial for the exposure of impurity and broken, and also quartz inversion is into high-temperature-phase,
Melting behaviors can be translates directly into during use.The technique of present invention regulation and control glass sand raw material crystal formation is first heated to height
In 900 DEG C of insulation a period of times of quartz crystal conversion temperature, be conducive to being heated evenly for quartz raw material.Due at this temperature
Quartz crystal conversion rate is slower, and conversion is incomplete.So needing to continue to raise temperature enough time, it is ensured that quartz crystal
Conversion is complete so that the impurity in quartz raw material can fully be exposed.In 600 DEG C of -800 DEG C of chargings, energy is reduced
Scatter and disappear, it is ensured that quartz raw material short time interior energy enters conversion temperature, reduces calcination time, improves production efficiency.
The present invention has advantages below.
（1）Glass sand raw material is calcined by the way of two sections of heatings and insulation, it is ensured that quartz crystal conversion is complete, makes
The impurity obtained in quartz raw material can fully be exposed, and reduce scattering and disappearing for energy, it is ensured that quartz raw material short time interior energy
Into conversion temperature, calcination time is reduced, production efficiency is improved.
（2）Hearth inner lining is poured under material, high temperature using carborundum, and silicon carbide hearth surface oxidation can form one layer of densification
Silicon oxide film, reduce again pollution of the quartz raw material in calcination process.
（3）Calandria is arranged on liner periphery, blout raw material will not damage calandria when on the one hand feeding；It is another
The thermal conductivity factor of aspect carborundum is very high, and the time that quartz raw material calcining is heated to certain temperature is short, saves the energy, improves and forge
Burn efficiency.
（4）The thermal shock resistance of carborundum is good, and chamber design is fed into inclined-plane along inclined-plane, quartz raw material meeting
Bottom is rolled down to along inclined-plane, impact of the quartz raw material to burner hearth is reduced, charging rate is fast, reduces temperature change and produces
Thermal stress, can work continuously without destroying burner hearth at high temperature.
（5）Fire door is designed into funneling, and fire door is in bottom of furnace body, is conducive to quickly discharging, will not get stuck.Fire door connects
Guide rod and cylinder, open fire door and close and be controlled, and reduce artificial operation, realize automation, reduce heat loss, improve
The thermal efficiency, has saved production cost.Simultaneously because quickly discharging, reduces the high quartz raw material aerial residence time,
Be conducive to the water quenching effect of quartz raw material.
Brief description of the drawings
Accompanying drawing 1 is schematic structural view of the invention.
In figure：1st, body of heater, 2, heat-insulation layer, 3, flame retardant coating, 4, Si-Mo rod calandria, 5, hearth inner lining, 6, control panel, 7,
Discharging opening fire door, 8, air cylinder guide rod, 9, cylinder, 10, discharging opening.
Embodiment
In conjunction with accompanying drawing 1, the present invention is further described in detail.A kind of work of regulation and control glass sand raw material crystal formation
Skill, glass sand raw material is added at the top of calcining furnace along hearth inner lining inclined-plane, and in-furnace temperature control is at 600 DEG C -800 during addition
DEG C, 900 DEG C are heated to, heating rate is 4-6 DEG C/minute, is incubated 1-2 hours, and insulation continues to be heated to 1200 DEG C -1300 after terminating
DEG C, 8-10 DEG C/minute of heating rate is incubated 2-4 hours, and insulation terminates exhaust hood control unit automatically by discharging opening oven door opening,
The glass sand raw material calcined quickly is fallen from discharging opening, into next technique.The heat time has been saved, heat is reduced
Amount loss, reduces energy resource consumption, is truly realized realization automation, reduces artificial operation, save production cost.
A kind of equipment of regulation and control glass sand raw material crystal formation, including the heating of body of heater 1, heat-insulation layer 2, flame retardant coating 3, Si-Mo rod
Body 4, hearth inner lining 5, control panel 6, discharging opening fire door 7, air cylinder guide rod 8, cylinder 9, discharging opening 10.5 four faces of hearth inner lining
It is inclined-plane and identical with the angle of vertical plane, the angle of inclined-plane and vertical plane is set as 30 ° in the range of 10 ° -40 °,
Hearth inner lining 5 pours material using carborundum, and the surrounding outside hearth inner lining of Si-Mo rod calandria 4 is uniformly distributed, longitudinal arrangement.
Installed in discharging opening 10 and air cylinder guide rod 8 and cylinder 9 are installed on fire door 7, fire door 7, realize that fire door is opened and closed.Fire door 7 is complete by two
The structure composition of exactly the same shape and phase same material, is shaped as with bevelled block, material is siliceous material.Fire door 7 it is oblique
Face is 20 ° -60 ° with horizontal plane angle scope, is set as 45 °.Control panel includes power supply, temperature control, time control
With cylinder control.
Claims (1)
1. a kind of technique of regulation and control glass sand raw material crystal formation, its equipment includes body of heater, heat-insulation layer, flame retardant coating, Si-Mo rod and added
Hot body, hearth inner lining, control panel, discharging opening fire door, discharging opening, air cylinder guide rod, cylinder, burner hearth are vertical, in hearth inner lining
Periphery installs Si-Mo rod calandria, and fire door is installed in discharging opening, and guide rod and cylinder are installed on fire door, realize fire door open with
Close；Four faces of hearth inner lining are inclined-plane and identical with the angle of vertical plane, and the angle of inclined-plane and vertical plane is 10 °-
40 °, liner pours material using carborundum, and Si-Mo rod calandria surrounding outside hearth inner lining is uniformly distributed, longitudinal arrangement；Stove
Door is shaped as with bevelled block, material is siliceous material by the structure composition of two identical shape and phase same materials,
The inclined-plane of fire door is 20 ° -60 ° with horizontal plane angle scope, it is characterised in that glass sand raw material is at the top of calcining furnace along stove
Thorax liner inclined-plane is added, and in-furnace temperature control is heated to 900 DEG C at 600 DEG C -800 DEG C during addition, and heating rate is 4-6 DEG C/
Point, 1-2 hours are incubated, insulation continues to be heated to 1200 DEG C -1300 DEG C after terminating, and 8-10 DEG C/minute of heating rate, insulation 2-4 is small
When, it is automatic by discharging opening oven door opening that insulation terminates exhaust hood control unit, and the glass sand raw material calcined is from discharging opening
Quickly fall, into next technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410772798.1A CN105318739B (en) | 2014-12-16 | 2014-12-16 | A kind of Processes and apparatus of regulation and control glass sand raw material crystal formation |
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|---|---|---|---|
| CN201410772798.1A CN105318739B (en) | 2014-12-16 | 2014-12-16 | A kind of Processes and apparatus of regulation and control glass sand raw material crystal formation |
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| CN105318739A CN105318739A (en) | 2016-02-10 |
| CN105318739B true CN105318739B (en) | 2017-11-07 |
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| CN112592164A (en) * | 2020-11-26 | 2021-04-02 | 南京工业大学东海先进硅基材料研究院 | Preparation method of high-purity quartz ceramic direct-writing free forming |
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| JP5140835B2 (en) * | 2005-03-07 | 2013-02-13 | 新日鉄住金マテリアルズ株式会社 | Manufacturing method of high purity silicon |
| CN1841062A (en) * | 2005-03-31 | 2006-10-04 | 东海县太平洋石英制品有限公司 | Mass spectrum analysis method for fluid impurity composition in natural quartz |
| CN101337767B (en) * | 2008-08-15 | 2010-09-29 | 杜建中 | Purification method in process of production of high-pure quartz sand as raw material of quartz glass |
| CN101947617B (en) * | 2010-08-30 | 2012-03-21 | 哈尔滨工业大学 | Double-chamber high-temperature forging and forming device of TiAl intermetallic compound forge piece and method thereof |
| CN203625056U (en) * | 2013-11-20 | 2014-06-04 | 湖南通力石英材料有限责任公司 | Vertical quartz sand ore calcining furnace |
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