CN102515479A - Device for preparing glass microspheres - Google Patents
Device for preparing glass microspheres Download PDFInfo
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- CN102515479A CN102515479A CN2012100001024A CN201210000102A CN102515479A CN 102515479 A CN102515479 A CN 102515479A CN 2012100001024 A CN2012100001024 A CN 2012100001024A CN 201210000102 A CN201210000102 A CN 201210000102A CN 102515479 A CN102515479 A CN 102515479A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention discloses a device for preparing glass microspheres. The device comprises a combustion chamber and a combustor, wherein the combustion chamber is an inverted cone-shaped combustion chamber with a wide opening facing down and a narrow opening facing up; the narrow opening of the inverted cone-shaped combustion chamber is connected with a material conveying spray pipe; the combustor comprises a first circular seam type spray pipe and a second circular seam type spray pipe; the first circular seam type spray pipe is connected with a fuel cavity; the second circular seam type spray pipe is connected with a combustion-supporting gas cavity; the first circular seam type spray pipe and the second circular seam type spray pipe are respectively arranged on the outer surface of the combustion chamber; the first circular seam type spray pipe is positioned above the second circular seam type spray pipe; pressurized fuel can be sprayed into the inverted cone-shaped combustion chamber along the first circular seam type spray pipe after entering the fuel cavity; and pressurized combustion-supporting gas can be sprayed into the inverted cone-shaped combustion chamber along the second circular seam type spray pipe after entering the combustion-supporting gas cavity. The device provided by the invention can reduce adhesion and deformation among granules to improve the yield and the qualification rate of the glass microspheres.
Description
Technical field
The present invention relates to the forming technique of glass microballon, specifically, relate to a kind of device for preparing glass microballon.
Background technology
The method of utilizing glass powder to produce glass microballon generally adopts separant method and flame floating method.The ultimate principle of separant method is, glass is broken into small-particle and mixes post-heating according to a certain percentage with separant (like graphite), and glass particle becomes pearl under capillary effect, and the cooling back is cleaned, drying is a finished product.Owing to be difficult to after separant uses remove totally, have influence on the transparence of glass microballon, color and luster etc., suitability for industrialized production generally need not be isolated solution.The ultimate principle of flame floating method is, glass is broken into the particle of certain particle size, and in a certain way glass particle sent in the flame, and under the effect of flame, glass particle is softening, fusion, pearlization, cooling curing promptly become granulated glass sphere.This method production of employing mostly of present domestic glass microballon producer.But the flame floating method is not suitable for the special glass microballon production of polygamy side's short run, also is not suitable for being prone to take place the glass microballon production of crystallization simultaneously.
USP U.S.P3361549 has introduced a kind of method and apparatus of making glass microballon, and its ultimate principle is identical with the flame floating method.This equipment mainly partly is made up of body of heater, burner, funnel collector etc.Burner places the center of bottom of furnace body, nozzle up, combustion gas and glass frit get into burners from two mouths respectively, glass frit and flame are upwards injection.Glass frit is melted by heating Cheng Zhu in flame, along with air-flow makes progress, is forced to diffusion all around by air-flow behind the arrival furnace roof, and is downward along the furnace wall then, after the body of heater lower end falls into funnel, collects.The major defect of this patent has: furnace wall temperature is higher, and material powder or microballon are difficult to avoid stick together with the furnace wall, and the PT is long more, and this problem is outstanding more.Simultaneously, this patent plan reckons without when the bead diameter skewness, and bigger particle possibly not rise to the top just to begin to fall, and after the small-particle collision that continues to rise, can deform or adhesion; Convection current is strong in this external furnace body, possibly make the glass frit nodularization that is not able to do in time just break away from flame, and this part material powder is mixed in nodularization, and good microballon is collected together, influences the bead yield rate and the qualification rate of product.
In addition, U.S. Glaverbel has applied for that in China number is 88104237.4 glass microballon spheronization process patent, and its principle is equally based on the flame floating method.This method is done carrier with combustion-supporting gas oxygen, and the glass micro mist is blown into the combustion chamber, uses carbon monoxide to be combustion gases, and the high temperature that produces during its burning with the micro mist melting and spheroidizing, is collected the cooling back and obtained the finished glass microballon.This equipment integral has 4 floors high, and the combustion chamber is up to 5 meters.The defective of this patented technology is, because the selection problem of combustion gas, flame atmosphere is bigger to the product influence, when flame is the reductibility flame, is prone to make the metals ion generation reduction reaction in the glass; When flame was oxydizing flame, flame flow was short and anxious, is prone to make the fused glass microballon to be elongated and is elliposoidal, and roundness is not enough; And powder just is blown into the combustion chamber with combustion gas simply, and the powder dispersity is not high, is prone to stick together, and the bead yield rate qualification rate is not high.Add that this equipment is too huge, the scale operation of only suitable single variety glass microballon is not suitable for the glass microballon variety production of polygamy side's short run.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of adhesion and distortion that can reduce between the particle is provided, improve bead yield rate and qualification rate, be suitable for producing the device of polygamy side's short run special glass microballon.
To achieve these goals, the present invention adopts following technical scheme:
A kind of device for preparing glass microballon; Comprise combustion chamber and burner; Said combustion chamber is the wide mouthful of back taper combustion chamber downward, that slot makes progress, and the slot of back taper combustion chamber is connected with the mass transport jet pipe, and said burner comprises the first circular seam type jet pipe and the second circular seam type jet pipe; The first circular seam type jet pipe connects fuel cavity; The second circular seam type jet pipe connects combustion-supporting air cavity, and the first circular seam type jet pipe and the second circular seam type jet pipe are located at the combustion chamber outside surface respectively, and the first circular seam type jet pipe is above the second circular seam type jet pipe; The fuel of pressurization can spray in the back taper combustion chamber along the first circular seam type jet pipe after getting into fuel cavity, and the combustion-supporting gas of pressurization can spray in the back taper combustion chamber along the second circular seam type jet pipe after getting into combustion-supporting air cavity.
In its geometrical intersection point " focusing " fierce collision takes place from the fuel of first circular seam type jet pipe ejection; When falling to this point of crossing from the glass frit of mass transport jet pipe entering through the back taper combustion chamber; Disperseed by the fuel shearing of fierce bump, with the fuel thorough mixing.Also do not absorb enough heat generation fusion because glass frit has just got into the combustion chamber this moment, so collision at this time also can not cause adhesion and distortion between the particle.Behind combustion-supporting gas and the burning of the fuel thorough mixing in the combustion chamber that the combustion-supporting gas from the below sprays from the second circular seam type jet pipe; Form the thermal-flame district of a spurting; Can obtain the thermal-flame that medial temperature is higher than 3000 ℃, more much higher than the temperature in the floating tower of traditional flame.The glass frit of disperseing to be in this temperature field is melted, and under capillary effect, forms glass microballon, flies away from this temperature field subsequently, is cooled to glass microballon.
In the device of above-mentioned preparation glass microballon, the fuel emission direction of the said first circular seam type jet pipe and back taper combustion chamber medullary ray form angle, and angle is 30～60 °; The angle size is influential to the shape and the length of combustion flame, and the α angle reduces, then the flame spindle; The α angle is strengthened, and then flame shortens slightly.The fuel emission direction of the said second circular seam type jet pipe and back taper combustion chamber medullary ray form angle β, and angle β is 45～70 °, and the size of angle β is influential to shape, length and the burning degree of combustion flame.Combustion-supporting gas can be purity oxygen, also can be oxygen and Air mixing gas.
In the device of above-mentioned preparation glass microballon, the circumferential weld width of the said first circular seam type jet pipe is 0.3～0.8mm; The circumferential weld width of the said second circular seam type jet pipe is 0.2～0.5mm.
In the device of above-mentioned preparation glass microballon, the pressure of the fuel of said pressurization is 0.5～1.5Mpa, and as far as fuel oil, pressure is big more, and the fuel oil drop after the atomizing is more little, and easier realization is burning fully.The pressure of the combustion-supporting gas of pressurization is greater than the pressure of fuel of pressurization, and the combustion-supporting gas pressure of input must be greater than combustion gas pressure, otherwise is difficult to form the swirling eddy of ideal form, can't guarantee to expect that powder flies with spiral trajectory in flame.
In the device of above-mentioned preparation glass microballon, said fuel cavity and combustion-supporting air cavity are annular, are trapped among back taper combustion chamber outside surface and link to each other with outside combustion gas or fuel passage.
In the device of above-mentioned preparation glass microballon, the said first circular seam type jet pipe should be less than 30mm in the vertical range of the second circular seam type jet pipe, otherwise is unfavorable for fully burning of combustion gas (or fuel oil).
In the device of above-mentioned preparation glass microballon, the epimere of said mass transport jet pipe is taper, and the stage casing is isometrical cylindrical, and hypomere is a back taper.Material can adopt gas delivery, and feeding gas is the gas mixture of air or air and oxygen, and feeding gas pressure intensity and flow velocity are unsuitable excessive.Material also can adopt pure gravity type boat davit charging.The glass micro mist gets into the combustion chamber via the mass transport jet pipe, converges with the air-flow of burning state, and glass micro mist available gas is carried, and also available pure gravity mode is sent into the combustion chamber.
In the device of above-mentioned preparation glass microballon, said fuel can be combustion gas, is preferably acetylene, methane, ethane, propane, normal butane, Trimethylmethane, liquefied gas, town gas, water-gas or carbon monoxide.
In the device of above-mentioned preparation glass microballon, said fuel also can be fuel oil, is preferably gasoline, diesel oil or kerosene.The said first circular seam type jet pipe is designed to Laval nozzle, makes the pressurization flow reach or near supersonic speed, effectively avoid the nozzle oil dripping at the circumferential weld exit velocity.This moment the fuel oil high atomisation, the oil droplet of acquisition is more tiny, burning thoroughly obtains stable hot flame.
In the device of above-mentioned preparation glass microballon, serious in order to solve some tendency towards devitrification, the glass microballon of the special formulation that should not at high temperature stop for a long time, below, said back taper combustion chamber is provided with the swirling eddy generator that is used for the cooled glass microballon.Because adopt this burner noz(zle) can obtain the thermal-flame that medial temperature is higher than 3000 ℃, and glass frit helically movement locus in thermal-flame, the utilization ratio of combustion heat energy is high; Below, this external back taper combustion chamber is provided with the swirling eddy generator that is used for the cooled glass microballon, can cool off rapidly after making the microballon of accomplishing nodularization fly away from thermal-flame.Based on above three characteristics, glass frit is very short in the time that high-temperature area stops in the nodularization process, and it is serious to be fit to some tendency towards devitrification, the production of the glass microballon product of the special formulation that should not at high temperature stop for a long time.
In the device of above-mentioned preparation glass microballon, stick together in order to avoid the micro mist molten drop in the combustion chamber, to collide each other as far as possible and be out of shape, combustion-supporting gas is designed to along the tangential admission of circumferential weld jet pipe, and adopts bifilar symmetrical expression air inlet.Like this, when combustion-supporting gas ejection circumferential weld, can form swirling eddy.This design one mixes combustion-supporting gas and combustion gas in the combustion chamber more abundant, and it is more thorough to burn; Two come glass frit by this swirling eddy constraint, be not easy to depart from flame kernel, and movement locus twist, have not only effectively reduced the random encounters between the material powder, have also prolonged the material residence time of powder in thermal-flame to greatest extent.This design significantly improves the utilization ratio of combustion heat energy, has shortened the length of combustion chamber greatly, makes the height of a complete set of nodularization equipment be reduced to the part of traditional flame floatation device.
Compared with prior art, the present invention adopts following technical scheme:
The device of preparation glass microballon of the present invention is through being back taper with Combustion chamber design; And burner design become the first circular seam type jet pipe and the second circular seam type jet pipe; First circular seam type jet pipe ejection fuel up; Below the second circular seam type jet pipe spray combustion-supporting gas, in its geometrical intersection point " focusings " fierce collision takes place from the fuel of first circular seam type jet pipe ejection, when falling to this point of crossing from the glass frit of mass transport jet pipe entering through the back taper combustion chamber; Disperseed by the fuel shearing of fierce bump, with the fuel thorough mixing.After combustion-supporting gas that the combustion-supporting gas of below sprays and the burning of the fuel thorough mixing in the combustion chamber, form the thermal-flame district of a spurting from the second circular seam type jet pipe, can obtain the thermal-flame that medial temperature is higher than 3000 ℃.The glass frit of disperseing to be in this temperature field is melted, and under capillary effect, forms glass microballon; Fly away from this temperature field subsequently; Under the effect of one or more levels rotation cooling draught, shape falls and cooling rapidly in the shape of a spiral, collects the glass microballon finished product in the aggregate tube bottom.This design makes that the powder dispersity is higher, because glass frit has just got into the combustion chamber, does not also absorb enough heat generation fusions in addition, and collision at this time also can not cause adhesion and the distortion between the particle.Therefore this device can reduce adhesion and distortion between the particle, thereby improves bead yield rate and qualification rate, also is fit to the glass microballon products production of polygamy side's short run.
Since adopt this burner noz(zle) can obtain the thermal-flame that medial temperature is higher than 3000 ℃, more much higher than the temperature in the floating tower of traditional flame; Glass frit helically movement locus in thermal-flame in addition, the utilization ratio of combustion heat energy is high; Multistage swirling eddy cooling microballon has been designed in this lower end, external combustion chamber, can cool off rapidly after making the microballon of accomplishing nodularization fly away from thermal-flame.Based on above three characteristics; Glass frit is very short in the time that high-temperature area stops in the nodularization process; It is serious to be fit to some tendency towards devitrification; The production of the glass microballon product of the special formulation that should not at high temperature stop for a long time is particularly suitable for making 300 microns of particle diameters big (>), and the glass microballon of crystallization takes place easily.
Description of drawings
Fig. 1 is the section of structure of the device of preparation glass microballon;
Fig. 2 is the gas nozzle structure sectional view;
Fig. 3 is combustion-supporting gas jets section of structure;
Fig. 4 is the Laval nozzle design of nozzle burner.
Embodiment
As shown in Figure 1, a kind of device for preparing glass microballon comprises combustion chamber 1 and burner 2; Combustion chamber 1 is the wide mouthful of back taper combustion chamber downward, that slot makes progress, and the slot of back taper combustion chamber 1 is connected with mass transport jet pipe 3, and said burner 2 comprises the first circular seam type jet pipe 21 and the second circular seam type jet pipe 22; The first circular seam type jet pipe 21 connects fuel cavity 4; The second circular seam type jet pipe 22 connects combustion-supporting air cavity 5, and fuel cavity and combustion-supporting air cavity are annular, are looped around back taper combustion chamber outside surface.The first circular seam type jet pipe 21 and the second circular seam type jet pipe 22 are located at combustion chamber 1 outside surface respectively, the first circular seam type jet pipe 21 above the second circular seam type jet pipe 22,
The first circular seam type jet pipe 21 is 20mm in the vertical range of the second circular seam type jet pipe 22.The fuel of pressurization can spray in the back taper combustion chamber 1 along the first circular seam type jet pipe 21 after getting into fuel cavity 4, and the combustion-supporting gas of pressurization can spray in the back taper combustion chamber 1 along the second circular seam type jet pipe 22 after getting into combustion-supporting air cavity 5.
Add combustion gas in the said fuel cavity 4, the pressure of combustion gas is 1.5Mpa; The pressure of the combustion-supporting gas of pressurization is greater than the pressure of the combustion gas of pressurization.
The gas nozzle structure sectional view of the first circular seam type jet pipe 21 is as shown in Figure 2, and the combustion-supporting gas jets section of structure of the second circular seam type jet pipe 22 is as shown in Figure 3, and the circumferential weld width of the first circular seam type jet pipe is 0.3mm; The circumferential weld width of the said second circular seam type jet pipe is 0.4mm.
During work, glass frit is from mass transport jet pipe 3 entering combustion chambers 1, converges with the air-flow of burning state, and the glass frit available gas is carried, and also available pure gravity mode is sent into combustion chamber 1.The combustion gas of pressurization gets into the first circular seam type jet pipe 21 from fuel cavity 4, and combustion gas is from the gas jet ejection of the first circular seam type jet pipe 21, and combustion gas emission direction and back taper combustion chamber 1 medullary ray form angle, and angle is 50 °; The fierce collision takes place in combustion gas this moment at its geometrical intersection point place " focusing ", when falling to this point of crossing from the glass frit of mass transport jet pipe 3 entering through back taper combustion chamber 1, by the fuel shearing dispersion of fierce bump, with the combustion gas thorough mixing.The combustion-supporting gas of pressurization gets into the second circular seam type jet pipe 22 from combustion-supporting air cavity; Combustion-supporting gas blowout outgoing direction and back taper combustion chamber 1 medullary ray form angle β, and angle β is 70 °, and combustion-supporting gas is along the second circular seam type jet pipe, 22 tangential admissions; And adopt bifilar symmetrical expression air inlet; Make when combustion-supporting gas sprays the second circular seam type jet pipe, 22 entering back taper combustion chambers 1, can form swirling eddy, after the fuel thorough mixing burning in combustion-supporting gas and the combustion chamber; Form the thermal-flame district of a spurting, can obtain the thermal-flame that medial temperature is higher than 3000 ℃.
1 below, back taper combustion chamber is provided with swirling eddy generator and the scoop that is used for the cooled glass microballon.
Above-mentioned combustion gas can be acetylene, methane, ethane, propane, normal butane, Trimethylmethane, liquefied gas, town gas, water-gas or carbon monoxide.
Further, said fuel also can be fuel oil, like gasoline, diesel oil or kerosene.When fuel adopted fuel oil, the said first circular seam type jet pipe 21 can be designed to Laval nozzle, and was as shown in Figure 4.Be designed to Laval nozzle to the first circular seam type jet pipe 21, make the pressurization flow reach or, effectively avoid the nozzle oil dripping near supersonic speed at the circumferential weld exit velocity.This moment the fuel oil high atomisation, the oil droplet of acquisition is more tiny, burning thoroughly obtains stable hot flame.
Claims (10)
1. device for preparing glass microballon; Comprise combustion chamber and burner; It is characterized in that said combustion chamber is the wide mouthful of back taper combustion chamber downward, that slot makes progress, the slot of back taper combustion chamber is connected with the mass transport jet pipe, and said burner comprises the first circular seam type jet pipe and the second circular seam type jet pipe; The first circular seam type jet pipe connects fuel cavity; The second circular seam type jet pipe connects combustion-supporting air cavity, and the first circular seam type jet pipe and the second circular seam type jet pipe are located at the combustion chamber outside surface respectively, and the first circular seam type jet pipe is above the second circular seam type jet pipe; The fuel of pressurization can spray in the back taper combustion chamber along the first circular seam type jet pipe after getting into fuel cavity, and the combustion-supporting gas of pressurization can spray in the back taper combustion chamber along the second circular seam type jet pipe after getting into combustion-supporting air cavity.
2. the device of preparation glass microballon as claimed in claim 1 is characterized in that the fuel emission direction of the said first circular seam type jet pipe and back taper combustion chamber medullary ray form angle, and angle is 30～60 °; The fuel emission direction of the said second circular seam type jet pipe and back taper combustion chamber medullary ray form angle β, and angle β is 45～70 °.
3. according to claim 1 or claim 2 the device of preparation glass microballon, the circumferential weld width that it is characterized in that the said first circular seam type jet pipe is 0.3～0.8mm; The circumferential weld width of the said second circular seam type jet pipe is 0.2～0.5mm.
4. the device of preparation glass microballon as claimed in claim 3, the pressure that it is characterized in that the fuel of said pressurization is 0.5～1.5Mpa; The pressure of the combustion-supporting gas of pressurization is greater than the pressure of the fuel of pressurization.
5. the device of preparation glass microballon as claimed in claim 1 is characterized in that said fuel cavity and combustion-supporting air cavity are annular, are looped around back taper combustion chamber outside surface.
6. the device of preparation glass microballon as claimed in claim 1, it is characterized in that the said first circular seam type jet pipe in the vertical range of the second circular seam type jet pipe less than 30mm.
7. the device of preparation glass microballon as claimed in claim 1; It is characterized in that said combustion-supporting gas is along the second circular seam type jet pipe tangential admission; And adopt bifilar symmetrical expression air inlet, make when combustion-supporting gas sprays second circular seam type jet pipe entering back taper combustion chamber, can form swirling eddy.
8. the device of preparation glass microballon as claimed in claim 1 is characterized in that said fuel is combustion gas, and said combustion gas is acetylene, methane, ethane, propane, normal butane, Trimethylmethane, liquefied gas, town gas, water-gas or carbon monoxide.
9. the device of preparation glass microballon as claimed in claim 1 is characterized in that said fuel oil is gasoline, diesel oil or kerosene, and the said first circular seam type jet pipe is a Laval nozzle.
10. the device of preparation glass microballon as claimed in claim 1 is characterized in that below, said back taper combustion chamber is provided with the swirling eddy generator that is used for the cooled glass microballon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100001024A CN102515479A (en) | 2012-01-03 | 2012-01-03 | Device for preparing glass microspheres |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100001024A CN102515479A (en) | 2012-01-03 | 2012-01-03 | Device for preparing glass microspheres |
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| CN102515479A true CN102515479A (en) | 2012-06-27 |
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| CN2012100001024A Pending CN102515479A (en) | 2012-01-03 | 2012-01-03 | Device for preparing glass microspheres |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962112A (en) * | 2015-07-10 | 2015-10-07 | 天津中海油服化学有限公司 | Device and method for modifying borosilicate hollow glass beads as cementing slurry lightening admixture |
| CN114877378A (en) * | 2022-06-02 | 2022-08-09 | 清航空天(北京)科技有限公司 | Inner ring detonation combustion chamber |
| CN114877377A (en) * | 2022-06-02 | 2022-08-09 | 清航空天(北京)科技有限公司 | Outer ring detonation combustion chamber |
| CN114877376A (en) * | 2022-06-02 | 2022-08-09 | 清航空天(北京)科技有限公司 | Double-channel detonation combustion chamber |
| CN116081941A (en) * | 2022-08-25 | 2023-05-09 | 浙江颐核医疗科技有限公司 | Yttrium 89 glass microsphere and preparation method thereof |
| CN114877377B (en) * | 2022-06-02 | 2024-05-14 | 清航空天(北京)科技有限公司 | Outer ring detonation combustor |
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| CN2397371Y (en) * | 1999-11-12 | 2000-09-20 | 昆明市福德机械设备厂 | Multifunctional biological matter gas burner |
| EP1394131A2 (en) * | 2002-08-29 | 2004-03-03 | Tribovent Verfahrensentwicklung GmbH | Process and apparatus for granulating of molten materials |
| CN201913249U (en) * | 2011-01-12 | 2011-08-03 | 北京有色金属研究总院 | Circular seam type supersonic spray nozzle for metal gas atomization |
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2012
- 2012-01-03 CN CN2012100001024A patent/CN102515479A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2397371Y (en) * | 1999-11-12 | 2000-09-20 | 昆明市福德机械设备厂 | Multifunctional biological matter gas burner |
| EP1394131A2 (en) * | 2002-08-29 | 2004-03-03 | Tribovent Verfahrensentwicklung GmbH | Process and apparatus for granulating of molten materials |
| CN201913249U (en) * | 2011-01-12 | 2011-08-03 | 北京有色金属研究总院 | Circular seam type supersonic spray nozzle for metal gas atomization |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962112A (en) * | 2015-07-10 | 2015-10-07 | 天津中海油服化学有限公司 | Device and method for modifying borosilicate hollow glass beads as cementing slurry lightening admixture |
| CN104962112B (en) * | 2015-07-10 | 2017-07-21 | 天津中海油服化学有限公司 | The reforming apparatus and method of a kind of cementing slurry palliative borosilicic acid salt hollow glass micropearl |
| CN114877378A (en) * | 2022-06-02 | 2022-08-09 | 清航空天(北京)科技有限公司 | Inner ring detonation combustion chamber |
| CN114877377A (en) * | 2022-06-02 | 2022-08-09 | 清航空天(北京)科技有限公司 | Outer ring detonation combustion chamber |
| CN114877376A (en) * | 2022-06-02 | 2022-08-09 | 清航空天(北京)科技有限公司 | Double-channel detonation combustion chamber |
| CN114877377B (en) * | 2022-06-02 | 2024-05-14 | 清航空天(北京)科技有限公司 | Outer ring detonation combustor |
| CN116081941A (en) * | 2022-08-25 | 2023-05-09 | 浙江颐核医疗科技有限公司 | Yttrium 89 glass microsphere and preparation method thereof |
| CN116081941B (en) * | 2022-08-25 | 2023-12-15 | 浙江颐核医疗科技有限公司 | Yttrium 89 glass microsphere and preparation method thereof |
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Application publication date: 20120627 |