CN1715220A - Material changing method for switching from high transmission glass production to low transmission glass production - Google Patents

Material changing method for switching from high transmission glass production to low transmission glass production Download PDF

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Publication number
CN1715220A
CN1715220A CN 200510087024 CN200510087024A CN1715220A CN 1715220 A CN1715220 A CN 1715220A CN 200510087024 CN200510087024 CN 200510087024 CN 200510087024 A CN200510087024 A CN 200510087024A CN 1715220 A CN1715220 A CN 1715220A
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emendation
strong
admixtion
glass
tank furnace
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李留恩
贾伟
苍利民
崔祥林
姜淑凤
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Henan Ancai Hi Tech Co Ltd
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Henan Ancai Hi Tech Co Ltd
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Priority to CN 200510087024 priority Critical patent/CN1715220A/en
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/24—Automatically regulating the melting process

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

The present invention completes computer simulation of glass flow state inside tank furnace, establishes material changing formula and determines the change rule of high transmissibility glass residue concentration with time. Finally, one material changing method from producing high transmissibility display tube glass to producing low transmissibility display tube glass is determined, and the method includes determining recipe, recipe switching and tank furnace temperature regulation. By means of the said method, one display tube glass producing tank furnace in yield of 200 ton/day may has its material changed in 48 hr with controllable nodes and stable technological parameters and glass quality.

Description

A kind of by producing the material-changing method that high permeability glass switches to low transmission glass
Technical field
The present invention relates to the teletron glass production field, more particularly, relate to by producing the high permeability teletron glass to producing the quick material-changing method that do not stop production that the low transmission teletron glass switches.
Background technology
The transmitance of glass and optical wavelength, relevant through the composition of layer thickness and glass.The Lambert-Beer rule can be determined light transmission and the chemical constitution of glass and the relation of thickness d of certain wavelength:
lgI 0/I＝1gl/D＝2.3×c×ε×d
C is the concentration of glass colorant in the formula, and ε is an optical extinction coefficient, and the distance that d is a light by glass is a thickness of glass.D is a transmitance, and I is the light intensity of outgoing glass, I 0For entering the light intensity of glass inside, transmitance D=I/I wherein 0
The transmitance of color picture tube glass bulb is an important optical index, generally have height (67%), in (57%), low (46%) three kind of specification, for the glass that tinting material is determined, its transmitance is by the concentration decision of tinting material.The transmitance difference, its colorant formulations is also inequality, therefore most enterprises can only be on different tank furnaces the different teletron glass of production transmitance, and seldom on same tank furnace, switch production.Because the old material of usefulness that adopts is replaced the method for virgin material while passing usually, its time of reloading is long, generally needs a week, and produces a large amount of middle transition glass, and the risk of reloading simultaneously is also bigger, and enterprise is difficult to bear the tremendous economic loss that may cause.Switch the waste that causes, the different demands that satisfy the user of producing in order to enhance productivity, to reduce, be badly in need of a kind of quick material-changing method that do not stop production of exploitation.
We through repetition test, develop a kind of method of reloading fast on same tank furnace on the basis that the mechanism of reloading is analysed in depth, promptly strong emendation is passed material-changing method.This method solves in the production process of crt glass, and the glass bulb tank furnace is long by the refulling cycle of producing high permeability glass generation when producing the low transmission glass switching, cost is high, have a big risk, waste problems such as serious.
Summary of the invention
The invention provides a kind of by producing the high permeability teletron glass to producing the quick material-changing method that the low transmission teletron glass switches, i.e. strong emendation passing material-changing method.This method can solve the following technical problem of reloading in the prior art and producing: the mechanism of reloading is unclear, the overlong time of reloading, timing node are wayward, the fluctuation of tank furnace state greatly, easily produces a large amount of waste products.
High permeability teletron glass of the present invention is meant that transmitance is at 52～100% teletron glass (hereinafter to be referred as the saturating teletron glass of height).Low transmission teletron glass of the present invention is meant that transmitance is at 20～51% teletron glass (hereinafter to be referred as low saturating teletron glass).
Strong emendation admixtion of the present invention is meant, a kind of by producing high saturating teletron glass in the handoff procedure of producing low saturating teletron glass, the glass production admixtion of glass metal transmitance replacing velocity in the raising stove that in the picture tube tank furnace, adds, this admixtion both had been different from high saturating teletron glass and had produced admixtion, also was different from low saturating teletron glass and produced admixtion.
Strong emendation of the present invention is passed material-changing method and be may further comprise the steps:
The first step:, determine the concentration of the tinting material that it adopts respectively according to the transmitance of saturating teletron glass of former height and the low saturating teletron glass of target.
Usually the transmitance scope of high saturating teletron glass is 52～100%, and the transmitance scope of low saturating teletron glass is 20～51%.The composition of high saturating teletron glass coloring agent component and low saturating teletron glass tinting material is as shown in table 1 below.
The composition and the content of high saturating teletron glass of table 1 and low saturating teletron glass tinting material
Coloring agent component Fe 2O 3 Co 3O 4 NiO
High saturating teletron glass % 0～0.1％ 0～0.002％ 0～0.02％
Low saturating teletron glass % 0～0.1％ 0.002～0.003％ 0.01～0.03％
Second step: calculate strong emendation admixtion material side.
Strong emendation admixtion of the present invention is made up of low transmission glass cullet and strong emendation powder two major parts, after the strong emendation admixtion of certainweight is molten into glass metal fully, the shared therein ratio of low transmission glass cullet is glass cullet rate L, and this ratio remains unchanged before, during and after switching usually.
Low transmission glass cullet of the present invention are meant that transmitance is 20～51% glass cullet, and its source is the waste product of each operation generation of glass shell production line and the recovery glass of outsourcing.
Strong emendation powder of the present invention is to mix gained by tinting material and other raw material of producing teletron glass in mixer, and other raw material and the proportioning thereof of described production teletron glass are known for the person of ordinary skill in the field.
The method of calculation of strong emendation powder formulation of the present invention are as follows:
1. the calculating of the remaining ratio of high saturating teletron glass liquid in the tank furnace
As adding the strong emendation admixtion, then the strong emendation admixtion flowed out after t hour, and the remaining ratio of high saturating teletron glass liquid is determined by following formula (1) in the tank furnace:
R t = e - t V × D / H - T - - - - ( 1 )
Wherein,
R t: the strong emendation admixtion flowed out after t hour, the remaining ratio (%) of high saturating teletron glass liquid in the tank furnace
V: the capacity of tank furnace (ton) is generally 100～1000 tons
H: hour load of tank furnace (ton/hour), be generally 2～20 tons/hour
D: the useful capacity of tank furnace is generally 0.8～0.9
T: the time that the strong emendation admixtion has dropped into (hour), maximum value is generally 30～48 hours
T: the strong emendation admixtion residence time of tank furnace (hour), be generally 15～20 hours
The foundation of aforesaid equation is based on such Numerical simulation results: the mobile of tank furnace inner glass liquid is not to be a simple piston flow, but be that opposite fusing circulation of center, flow direction and clarification circulation are formed with the focus by two, also have some circlet streams and backflow in addition, as shown in Figure 1.
Can determine behind the random time t (maximum value is generally 30～48 hours) that the strong emendation admixtion has dropped into the remaining ratio of high saturating teletron glass feed liquid in the tank furnace by this equation.
2. the tank furnace heals needs the calculating of the amount (%) of the tinting material of revisal
The tank furnace heals needs the amount C of the tinting material of revisal i(%) calculate by following formula (2):
C i＝(B i-R×A i)/(1-R) (2)
In the formula:
A i: the concentration of tinting material i in the saturating teletron glass of former height, referring to table 1
B i: the concentration of tinting material i in the low saturating teletron glass of target, referring to table 1
C i: the aimed concn of tinting material i in the strong emendation admixtion
R: after the strong emendation admixtion is all finished using, the ratio of remaining high saturating teletron glass feed liquid in the tank furnace
I is Co 3O 4, NiO or Fe 2O 3
3. the introducing amount M of tinting material in the strong emendation powder iThe calculating of %
If ε is admixtion yield (%), after soon the strong emendation powder of certainweight was molten into glass metal fully, the gained glass weight accounted for the per-cent (%) of former strong emendation powder weight; S is a low transmission glass cullet weight (kg); F is a strong emendation powder amount (kg); L is the glass cullet rate; The introducing amount M of tinting material in the strong emendation powder then iThe account form of % is as follows:
A. be example with the strong emendation admixtion gross weight 100kg that adds, obtain S and F by following two formulas (3), (4) simultaneous:
S/(S+F×ε)＝L (3)
S+F＝100 (4)
B. according to the concentration of tinting material i in the low saturating teletron glass of table 1, calculate the introducing amount M of each tinting material i respectively by following formula (5) i%.
M i＝[100×C i-(S×B i)]/F (5)
Wherein, i is Co 3O 4, NiO or Fe 2O 3
The 3rd step: that determines the strong emendation admixtion advances stove revisal time and consumption.
Set advancing the stove revisal time of short strong emendation admixtion, then the input amount of strong emendation admixtion is bigger in the unit time, and transmitance changes violent; Otherwise, set advancing the stove revisal time of long strong emendation admixtion, then the input amount of strong emendation admixtion is less in the unit time, and transmitance changes steadily.Advancing the stove revisal time of strong emendation admixtion, that is the strong emendation admixtion the maximum value of making time be set at 30～48 hours usually, calculate the consumption can determine the strong emendation admixtion by following formula (6) thus.
Consumption=the H of strong emendation admixtion * J * (1-L)/ε (6)
Wherein, J be the advancing the stove revisal time of strong emendation admixtion (hour).
The 4th step: add the strong emendation admixtion, and adjust the tank furnace temperature
After confirming that the strong emendation admixtion has advanced stove, the bulk temperature of rising tank furnace.With the tank furnace hot(test)-spot temperature, that is tank furnace inside raises 5～30 ℃ along the temperature vertex on the glass metal flow direction, preferably raises 10～20 ℃, keeps bottom temperature simultaneously, and it is not reduced because of the decline of transmitance.
The 5th step: add target low transmission admixtion
The strong emendation admixtion is all finished using, and after promptly J hour, target low transmission admixtion is added tank furnace.
After implementing the above-mentioned step of reloading, can make load is 200 tons/day tank furnace, in 48 hours, switch to the production of low saturating teletron glass by the production of the saturating teletron glass of height, its each node is controlled fully, improved the replacing velocity of different transmission glass liquid in the stove, production line need not stop production, and the tank furnace fluctuation is little, and glass quality is comparatively stable.Thereby reduced production cost, and obtained favorable economic benefit, make enterprise switch product fast to satisfy requirements of different users according to market demands.
Description of drawings
The tank furnace inner glass liquid stream flow trace figure that Fig. 1 obtains for computer simulation, wherein:
1: fusing circulation,
2: the material mountain
3: bubbling
4: clarification circulation
5: dog-hole
6: work pool
7: passage
Except as otherwise noted, per-cent all is weight percentage described in the present invention.
Be the specific examples of embodiment of the present invention below, but the present invention is not limited to following example.
Embodiment
The tank furnace of one 200 square meter, be that the production of 57% high saturating teletron glass switches to the production that transmitance is 46% low teletron glass by transmitance, concrete steps are as follows: the first step: determine the composition of the low saturating teletron glass tinting material of saturating teletron glass tinting material of former height and target, and as shown in table 2 below.
The composition and the content of the low saturating teletron glass tinting material of saturating teletron glass of the former height of table 2 and target
Coloring agent component Fe 2O 3 Co 3O 4 NiO
High saturating teletron glass (57%) 0.055％ 0.00164％ 0.0122％
Low saturating teletron glass (46%) 0.055％ 0.00225％ 0.0193％
Second step: calculate strong emendation admixtion material side.
Concrete tank furnace parameter is as follows:
Tank furnace capacity V:672 ton;
Day load P (ton/sky): 200 tons/day;
Hour load H:H=P/24=8.33 ton/hour;
The useful capacity D:88% of tank furnace;
The strong emendation admixtion was the T:16 hour residence time of tank furnace;
The time t that the strong emendation admixtion has dropped into: maximum value is 40 hours;
Glass cullet rate (%) before, during and after the switching: 52%;
Admixtion yield: 0.86.
1. the calculating of the remaining ratio of high saturating teletron glass liquid in the tank furnace:
As adding the strong emendation admixtion, then the strong emendation admixtion is all finished using, after promptly 40 hours, by above-mentioned formula (1):
R t = e - t V × D / H - T
Calculating the remaining ratio of the interior high saturating teletron glass liquid of tank furnace is 45.606%.
2. the tank furnace heals needs the tinting material Co of revisal 3O 4, NiO and Fe 2O 3The calculating of amount (%) calculate the Co that the tank furnace heals needs revisal by above-mentioned formula (2) 3O 4, NiO and Fe 2O 3Amount (%), obtain:
C 1＝0.002756％、C 2＝0.025253％、C 3＝0.055％
Wherein, 1:Co 3O 4, 2:NiO, 3:Fe 2O 3
3. tinting material Co in the strong emendation powder 3O 4, NiO, Fe 2O 3Introducing amount M iThe calculating of %
A. be example with the strong emendation admixtion gross weight 100Kg that adds, calculate S and F according to above-mentioned formula (3), (4) simultaneous:
S/(S+F×ε)＝L，S/(S+F×0.86)＝0.52
S+F＝100
Wherein: S=48.32kg, F=51.68kg
B. according to the concentration of tinting material in the low saturating teletron glass of table 2, calculate three kinds of tinting material Co according to above-mentioned formula (5) 3O 4, NiO, Fe 2O 3Introducing amount M i% obtains
M 1＝0.0032257％
M 2＝0.0307479％
M 2＝0.05500％
Wherein, 1:Co 3O 4, 2:NiO, 3:Fe 2O 3
In sum, the material side of strong emendation admixtion is: every 100kg strong emendation admixtion contains 48.32kg low transmission glass cullet and 51.68kg strong emendation powder, and wherein the amount of the tinting material of introducing in the strong emendation powder is: Co 3O 40.0032257% is 1.667 grams, NiO 0.0307479% i.e. 15.89 grams, Fe 2O 30.05500% promptly 28.42 restrains.The tinting material of described amount and other can be obtained required strong emendation powder for other raw material uniform mixing in mixer of the production teletron glass that the those skilled in the art knew.At last again strong emendation powder and low transmission glass cullet mixed preparing are just obtained required strong emendation admixtion.
The 3rd step: that determines the strong emendation admixtion advances stove revisal time J and consumption.
The stove revisal time J that advances that determines the strong emendation admixtion is 40 hours, and a hour load H is 8.33 tons, determines that according to above-mentioned formula (6) consumption of strong emendation admixtion is 186 tons.
The 4th step: add the strong emendation admixtion, and adjust tank furnace technology.
Determine that the bulk temperature that the strong emendation admixtion has advanced behind the stove tank furnace raises, hot(test)-spot temperature is increased to 1587 ℃ by 1572 ℃, keep bottom temperature simultaneously, it is not reduced because of the decline of glass metal transmitance.
The 5th step: add target low transmission admixtion.
The strong emendation admixtion is all finished using, and after promptly 40 hours, target low transmission admixtion is added tank furnace.
After implementing the above-mentioned step of reloading, can make load is the tank furnace of 200T/D, in 48 hours, be that to switch to transmitance be 46% low teletron glass for 57% high saturating teletron glass by transmitance, wherein each node is controlled fully, production line need not stop production, and the tank furnace fluctuation is little, and glass quality is comparatively stable.

Claims (12)

1. one kind by producing the high permeability teletron glass to producing the material-changing method that the low transmission teletron glass switches, and it is characterized in that when needs carry out above-mentioned switching, adopt strong emendation to pass the method for reloading in the tank furnace operational process, this method comprises the steps:
A. according to the transmitance of former high permeability teletron glass and target low transmission teletron glass, determine the concentration of its tinting material that adopts respectively;
B. calculate strong emendation admixtion material side;
That c. determines the strong emendation admixtion advances stove revisal time and consumption;
D. add the strong emendation admixtion, and adjust the tank furnace temperature;
E. add target low transmission admixtion.
2. method according to claim 1 is characterized in that, the transmitance of the teletron glass before the described switching is 52～100%, and the transmitance of the teletron glass after the described switching is 20～51%.
3. method according to claim 1 is characterized in that, described calculating strong emendation admixtion material side comprises the steps:
A. calculate the remaining ratio of high permeability teletron glass liquid in the tank furnace;
B. calculating the tank furnace heals needs the amount of the tinting material of revisal;
C. calculate the introducing amount M of tinting material in the strong emendation powder i%.
4. method according to claim 3 is characterized in that, described strong emendation admixtion flowed out after t hour, the remaining ratio R of high permeability teletron glass liquid in the tank furnace tDetermine by following formula:
R t = e - t V × D / H - T
Wherein:
The capacity of V-tank furnace
Hour load of H-tank furnace
The useful capacity of D-tank furnace
T-strong emendation admixtion is in the residence time of tank furnace
The time that t-strong emendation admixtion has dropped into.
5. according to the method for claim 4, it is characterized in that described tank furnace capacity is 100～1000 tons, hour load is 2～20 tons/hour, and useful capacity is 0.8～0.9, and the time that the strong emendation admixtion stops in tank furnace is 15～20 hours.
6. method according to claim 3 is characterized in that, the tank furnace heals needs the amount of the tinting material of revisal to be calculated as follows:
C i＝(B i-R×A i)/(1-R)
In the formula:
A i: the concentration of tinting material i in the former high permeability teletron glass;
B i: the concentration of tinting material i in the target low transmission teletron glass;
C i: the aimed concn of tinting material i in the strong emendation admixtion;
R: after the strong emendation admixtion is all finished using, the ratio of remaining high permeability teletron glass liquid in the tank furnace;
I is Co 3O 4, NiO or Fe 2O 3
7. method according to claim 3 is characterized in that, the introducing amount M of tinting material in the strong emendation powder i% is calculated by the following formula simultaneous:
S/(S+F×ε)＝L
S+F＝100
M i＝[100×C i-(S×B i)]/F
In the formula:
ε is the admixtion yield, and S is low transmission glass cullet weight, and F is a strong emendation powder amount, B iBe the concentration of tinting material i in the target low transmission teletron glass, C iBe the aimed concn of tinting material i in the strong emendation admixtion, i is Co 3O 4, NiO or Fe 2O 3
8. method according to claim 1 is characterized in that the stove revisal time of advancing of described strong emendation admixtion is 30～48 hours.
9. method according to claim 1, the consumption that it is characterized in that described strong emendation admixtion are H * J * (1-L)/ε, and wherein J is advancing the stove revisal time of strong emendation admixtion.
10. method according to claim 1 is characterized in that the hot(test)-spot temperature of tank furnace raises 5～30 ℃ after the strong emendation admixtion advances stove.
11. the method according to claim 10 is characterized in that, the hot(test)-spot temperature of described tank furnace after the strong emendation admixtion advances stove rising 10-20 ℃.
12. method according to claim 1 is characterized in that after the strong emendation admixtion is all finished using, and target low transmission admixtion is added in the glass melting furnace.
CN 200510087024 2005-07-22 2005-07-22 Material changing method for switching from high transmission glass production to low transmission glass production Pending CN1715220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200510087024 CN1715220A (en) 2005-07-22 2005-07-22 Material changing method for switching from high transmission glass production to low transmission glass production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200510087024 CN1715220A (en) 2005-07-22 2005-07-22 Material changing method for switching from high transmission glass production to low transmission glass production

Publications (1)

Publication Number Publication Date
CN1715220A true CN1715220A (en) 2006-01-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113248155A (en) * 2021-06-18 2021-08-13 汇尔杰新材料科技股份有限公司 Alkali-resistant glass fiber and medium-alkali glass fiber replacement production method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113248155A (en) * 2021-06-18 2021-08-13 汇尔杰新材料科技股份有限公司 Alkali-resistant glass fiber and medium-alkali glass fiber replacement production method
CN113248155B (en) * 2021-06-18 2022-11-29 汇尔杰新材料科技股份有限公司 Alkali-resistant glass fiber and medium-alkali glass fiber replacement production method

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