CN106278207A - A kind of honeycomb ceramic carrier preparation method of functional silicon powder for automobile exhaust purifier - Google Patents
A kind of honeycomb ceramic carrier preparation method of functional silicon powder for automobile exhaust purifier Download PDFInfo
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- CN106278207A CN106278207A CN201610606028.9A CN201610606028A CN106278207A CN 106278207 A CN106278207 A CN 106278207A CN 201610606028 A CN201610606028 A CN 201610606028A CN 106278207 A CN106278207 A CN 106278207A
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- silicon powder
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
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Abstract
The present invention is the preparation method of a kind of functional silicon powder of honeycomb ceramic carrier for automobile exhaust purifier, its step is as follows: particle diameter be the vitreous silica block of 5 10cm and vitreous silica block that particle diameter is below 5cm for adding in intermittent ball mills by weight 7 5:3, grind, magnetic separator prepares component A；Component A adds and continuously runs ball mill, removes bulky grain by cyclone separator, then is delivered to high speed sorting grading system by air-flow and obtains component B；Discharging, then by 10000Gs magnetic separator, prepare functional silicon powder.The process employs dry method extra-fine grinding and the classification technique of energy-saving high-efficiency environment-friendly, technique is simple, the silicon powder for preparing, the high and low ferrum of purity, granularity controllable.In the application process of the honeycomb ceramic carrier of automobile exhaust purifier, show good low expansion and high intensity, the high performance such as heat-resisting, improve automobile exhaust purifier honeycomb ceramic carrier production process mouldability and agglutinating property.
Description
Technical field
The present invention relates to the preparation method of a kind of silicon powder, a kind of ceramic honey comb for automobile exhaust purifier
The carrier preparation method of functional silicon powder.
Background technology
Along with the high speed development of national economy, China's automobile pollution quickly increases.According to statistics, by the end of the year 2014, I
State's vehicle guaranteeding organic quantity is 2.64 hundred million.The discharge of vehicle exhaust at present is the source of atmospheric pollution that big and medium-sized cities are main, Qi Zhong great
The Hydrocarbon of 73.5% in gas pollutant, the carbon monoxide of 63.4%, the oxynitride of 46% both are from vehicle exhaust.
Always the lowest for by wideling popularize diesel oil with diesel oil CO2 emissions along with European Countries government, European market
More than half new car uses diesel motor, and European uses diesel vehicle also based on environmental protection concept.In JIUYUE, 2015 germany volkswagen automobile
On the part diesel vehicle that the U.S. is sold, special equipment is installed by quick-fried, deals with emission detections specially, face the highest by 18,000,000,000
Dollar fine, simultaneously the most also re-initiation people's concerns to treating vehicle exhaust.Improvement automobile exhaust pollution is one and is
System engineering, needs multiple technologies, multiple means to carry out integrated use.Such as, improve fuel qualities, improve engine technology, strict
Exhaust emissions and application novel energy etc., wherein the purification of tail gas is one of important measures reducing environmental pollution.Car tail
In gas catalytic purification device, catalyst carrier is the key factor realizing efficient tail-gas purifying.At the carrier material used
In, it is broadly divided into ceramic monolith and metallic carrier two kinds, but be used widely is honeycomb ceramic carrier.Ceramic honey comb is can
Being formed by various material, main material has: cordierite, mullite, aluminium titanates, zirconium oxide, silicon carbide and violet green grass or young crops mullite,
The composite interstitial substances such as cordierite aluminium titanates.Wherein cordierite (2MgO 2AL203•5Si02) ceramic honey comb is to be with cordierite crystal
Principal crystalline phase, its moulding as cellular a kind of porous ceramics, it has, and intensity is big, low bulk, resistance to heat shocks are good, adsorptivity is strong,
The advantage such as wear-resistant and become the most frequently used self-contained auto-exhaust catalyst carrier, it is possible to meet state III, state IV exhaust emissions mark
Alignment request.The use environment of automobile honeycomb ceramic carrier is severe especially, during it is again rear discharge treating system simultaneously
Parts.Therefore, its system coordination adaptability is also required that the highest.Automobile exhaust purifier is to its honeycomb ceramic carrier
Major requirement is: with catalyst component without chemical reaction, certain mechanical strength, heat stability and good thermal shock, thermal expansion system
The specific surface area etc. that number is little and higher.For meeting above-mentioned performance requirement, add functionalized silica filler to ceramic honey comb
Carrier has irreplaceable effect towards aspect development such as high intensity, high heat-resisting, low bulks.At functionalized silica filler
Aspect, molten silicon micropowder has unique intrinsic advantage.The main component of molten silicon micropowder is Si02, belong to amorphous body structure,
Particles ultra fine, specific surface area is big, the preferable raw material of its most still chemical building material, and is silicate material solid state reaction and burning
The mineralizer of knot.It can improve honeycomb ceramic carrier as the solid state reaction of cordierite and the mineralizer of the sintering of idiosome
Intensity, reduce cordierite thermal coefficient of expansion, strengthen its service life.
The honeycomb ceramic carrier of automobile exhaust purifier is as follows by the performance characteristics of functional silicon powder: products application
During reflect excellent low expansion and high intensity, the high performance such as heat-resisting；This process of producing product is prone to adjust, and solution can
The narrow ditribution granularity technology adjusted, improves automobile exhaust purifier honeycomb ceramic carrier production process mouldability and agglutinating property；3, adopt
With from crumbling method, reduce machinery iron content, improve product purity；Use dry method extra-fine grinding and the classification of energy-saving high-efficiency environment-friendly
Technology, it is achieved granularity controllable.
China's patent document 201210549948.3 is disclosed that chooses SiO2Content not less than 99.8% unformed
Vitreous silica sandy plain material, and carry out magnetic separation roguing after proportioning by certain particle size distribution, then carry out ultra-fine with precision ball grinder system
Grinding, the diameter that grinding use is ground Jie's alumina balls carries out proportioning；Grader is used to carry out fine grading after extra-fine grinding,
Semi-finished product are obtained after classification；Semi-finished product are modified rear secondary fine grading, after classification, obtain particle diameter D10≤1.5 μm, D50=
2-3 μm, D90≤9 μm, the finished product of D100≤13 μm.This inventive method complex manufacturing, need to surface of semi-finished process with
Solving agglomeration traits between granule, and secondary grading just can obtain the particle size distribution that is suitable for, production efficiency is low, and cost is high.
Summary of the invention
The technical problem to be solved is for the deficiencies in the prior art, it is provided that a kind of new for vehicle exhaust
The honeycomb ceramic carrier of the depurator preparation method of functional silicon powder, the dry method extra-fine grinding of the method energy-saving high-efficiency environment-friendly
And classification technique, the high and low ferrum of silicon powder purity of preparation, granularity controllable.
The technical problem to be solved is to be realized by following technical scheme.The present invention be a kind of for
The honeycomb ceramic carrier of the automobile exhaust purifier preparation method of functional silicon powder, is characterized in, its step is as follows:
(1) the vitreous silica block of more than 99.7% is reached as raw material with dioxide-containing silica, by the vitreous silica block that particle diameter is 5-10cm
With the vitreous silica block that particle diameter is below 5cm for adding in intermittent ball mill by weight 7-5:3, ground 30-60min
After, with 20-40HZ discharging frequency discharging, by 10000Gs magnetic separator, remove metal impurities, prepare component A standby；
(2) by component A with 5-10HZ feed frequency, adding and continuously run ball mill, grinding in ball grinder medium is alumina balls,
Its proportioning is: ￠ 11/2 : ￠ 11/4: ￠ 13/4=1:1:1, regulation ball mill weighing sensor is carried out between 22500 ± 200kg
Grind, with 13000 ± 300m3/ h absorbing quantity removes bulky grain by cyclone separator, then is delivered to high speed classification by air-flow
Machine grading system under 3900 ± 100rpm rotating speed obtains component B；
(3) component B discharging, then by 10000Gs magnetic separator, after removing metal impurities, cross 180 μm guarantees and sieve, prepared D10=2 ±
0.3 μm, D50=3.6 ± 0.3 μm, D90=6.5 ± 1 μm, the functional silicon powder of D100≤14 μm.
The honeycomb ceramic carrier preparation method of functional silicon powder for automobile exhaust purifier of the present invention,
Its further preferred technical scheme is: the raw material total amount described in step (1) is 7-9 ton；Aluminium oxide described in step (2)
Ball gross weight is 30 ± 1.5 tons.
The honeycomb ceramic carrier preparation method of functional silicon powder for automobile exhaust purifier of the present invention,
Its further preferred technical scheme is: in step (1), adds the vitreous silica that particle diameter is 5-10cm in intermittent ball mill
The weight ratio of block and vitreous silica block that particle diameter is below 5cm is 6:3.
The honeycomb ceramic carrier preparation method of functional silicon powder for automobile exhaust purifier of the present invention,
Its further preferred technical scheme is: in step (2), with 13000m3/ h absorbing quantity removes bulky grain by cyclone separator,
It is delivered to high speed sorting grading system under 3900rpm rotating speed by air-flow again and obtains component B.
Compared with prior art, the inventive method have employed dry method extra-fine grinding and the classification technique system of energy-saving high-efficiency environment-friendly
Standby must be in the functional silicon powder of the honeycomb ceramic carrier for automobile exhaust purifier, its preparation technology is simple, prepared silicon
The high and low ferrum of micropowder, purity, granularity controllable.This product is carried by detection and test, the ceramic honey comb at automobile exhaust purifier
The application process of body shows good low expansion and high intensity, the high performance such as heat-resisting, improves automobile exhaust purifier honeybee
Nest ceramic monolith production process mouldability and agglutinating property.
Detailed description of the invention
The concrete technical scheme of the present invention described further below, in order to those skilled in the art is further understood that
The present invention, and do not constitute the restriction to its right.
Embodiment 1, a kind of honeycomb ceramic carrier preparation method of functional silicon powder for automobile exhaust purifier,
Its step is as follows:
(1) the vitreous silica block of more than 99.7% is reached as raw material with dioxide-containing silica, by the vitreous silica block that particle diameter is 5-10cm
With the vitreous silica block that particle diameter is below 5cm for adding in intermittent ball mill by weight 7:3, total amount is 7 tons；Ground
After 30min, with 20HZ discharging frequency discharging, by 10000Gs magnetic separator, remove metal impurities, prepare component A standby；
(2) by component A with 5HZ feed frequency, adding and continuously run ball mill, grinding in ball grinder medium is alumina balls, its
Proportioning is: ￠ 11/2 : ￠ 11/4: ￠ 13/4=1:1:1, gross weight 28.5 tons；Regulation ball mill weighing sensor 22300kg it
Between be ground, with 12700m3/ h absorbing quantity removes bulky grain by cyclone separator, then is delivered to high speed classification by air-flow
Machine grading system under 3800rpm rotating speed obtains component B；
(3) component B discharging, then by 10000Gs magnetic separator, after removing metal impurities, cross 180 μm guarantees and sieve, prepared D10=2 ±
0.3 μm, D50=3.6 ± 0.3 μm, D90=6.5 ± 1 μm, the functional silicon powder of D100≤14 μm.
Embodiment 2, a kind of honeycomb ceramic carrier preparation method of functional silicon powder for automobile exhaust purifier,
Its step is as follows:
(1) the vitreous silica block of more than 99.7% is reached as raw material with dioxide-containing silica, by the vitreous silica block that particle diameter is 5-10cm
With the vitreous silica block that particle diameter is below 5cm for adding in intermittent ball mill by weight 5:3, total amount is 9 tons；Ground
After 60min, with 40HZ discharging frequency discharging, by 10000Gs magnetic separator, remove metal impurities, prepare component A standby；
(2) by component A with 5-10HZ feed frequency, adding and continuously run ball mill, grinding in ball grinder medium is alumina balls,
Its proportioning is: ￠ 11/2 : ￠ 11/4: ￠ 13/4=1:1:1, gross weight 31.5 tons；Regulation ball mill weighing sensor is at 22700kg
Between be ground, with 13300m3/ h absorbing quantity removes bulky grain by cyclone separator, then is delivered to divide at a high speed by air-flow
Level machine grading system under 4000rpm rotating speed obtains component B；
(3) component B discharging, then by 10000Gs magnetic separator, after removing metal impurities, cross 180 μm guarantees and sieve, prepared D10=2 ±
0.3 μm, D50=3.6 ± 0.3 μm, D90=6.5 ± 1 μm, the functional silicon powder of D100≤14 μm.
Embodiment 3, a kind of honeycomb ceramic carrier preparation method of functional silicon powder for automobile exhaust purifier,
Its step is as follows:
(1) the vitreous silica block of more than 99.7% is reached as raw material with dioxide-containing silica, by the vitreous silica block that particle diameter is 5-10cm
With the vitreous silica block that particle diameter is below 5cm for adding in intermittent ball mill by weight 6:3, total amount is 8 tons；Ground
After 45min, with 30HZ discharging frequency discharging, by 10000Gs magnetic separator, remove metal impurities, prepare component A standby；
(2) by component A with 5HZ feed frequency, adding and continuously run ball mill, grinding in ball grinder medium is alumina balls, its
Proportioning is: ￠ 11/2 : ￠ 11/4: ￠ 13/4=1:1:1, gross weight 30 tons；Regulation ball mill weighing sensor is between 22500kg
It is ground, with 13000m3/ h absorbing quantity removes bulky grain by cyclone separator, then is delivered to high speed sorting by air-flow
Under 3900rpm rotating speed, grading system obtains component B；
(3) component B discharging, then by 10000Gs magnetic separator, after removing metal impurities, cross 180 μm guarantees and sieve, prepared D10=2 ±
0.3 μm, D50=3.6 ± 0.3 μm, D90=6.5 ± 1 μm, the functional silicon powder of D100≤14 μm.
Embodiment 4, for the honeycomb ceramic carrier preparation method performance of functional silicon powder of automobile exhaust purifier
Evaluation experimental:
Comparative example 1: dioxide-containing silica is reached the vitreous silica block 5-10cm/0-5cm of more than 99.7%, in 6:3 ratio (total amount
It is 8 tons) add in intermittent ball mill, after ground 30-60min, with 20-40HZ discharging frequency discharging, by 10000Gs magnetic
Select machine, remove metal impurities, prepare comparative example 1 product.
Experimental example 1: prepare experimental example 1 product by embodiment 1 method.
Experimental example 2: prepare experimental example 2 product by embodiment 3 method.
(1) testing result
(2) application test result
From the point of view of the result of test, the product of experimental example 1 and experimental example 2 shows more excellent on application performance test, mainly
Being embodied in oil factor, wherein experimental example 2 behaves oneself best, and not only oil factor is good, mobility, beneficially product molding and burning
Knot.
(3) conclusion
This product, by detection and test, shows good in the application process of the honeycomb ceramic carrier of automobile exhaust purifier
Low expansion and high intensity, the high performance such as heat-resisting, improve automobile exhaust purifier honeycomb ceramic carrier production process mouldability
And agglutinating property.
Claims (4)
1., for a honeycomb ceramic carrier preparation method for functional silicon powder for automobile exhaust purifier, its feature exists
In, its step is as follows:
(1) the vitreous silica block of more than 99.7% is reached as raw material with dioxide-containing silica, by the vitreous silica block that particle diameter is 5-10cm
With the vitreous silica block that particle diameter is below 5cm for adding in intermittent ball mill by weight 7-5:3, ground 30-60min
After, with 20-40HZ discharging frequency discharging, by 10000Gs magnetic separator, remove metal impurities, prepare component A standby；
(2) by component A with 5-10HZ feed frequency, adding and continuously run ball mill, grinding in ball grinder medium is alumina balls,
Its proportioning is: ￠ 11/2 : ￠ 11/4: ￠ 13/4=1:1:1, regulation ball mill weighing sensor is carried out between 22500 ± 200kg
Grind, with 13000 ± 300m3/ h absorbing quantity removes bulky grain by cyclone separator, then is delivered to high speed classification by air-flow
Machine grading system under 3900 ± 100rpm rotating speed obtains component B；
(3) component B discharging, then by 10000Gs magnetic separator, after removing metal impurities, cross 180 μm guarantees and sieve, prepared D10=2 ±
0.3 μm, D50=3.6 ± 0.3 μm, D90=6.5 ± 1 μm, the functional silicon powder of D100≤14 μm.
The honeycomb ceramic carrier preparation of functional silicon powder for automobile exhaust purifier the most according to claim 1
Method, it is characterised in that: the raw material total amount described in step (1) is 7-9 ton；Alumina balls gross weight described in step (2)
It it is 30 ± 1.5 tons.
The honeycomb ceramic carrier preparation of functional silicon powder for automobile exhaust purifier the most according to claim 1
Method, it is characterised in that: in step (1), add the vitreous silica block that particle diameter is 5-10cm in intermittent ball mill and particle diameter
Weight ratio for the vitreous silica block of below 5cm is 6:3.
The honeycomb ceramic carrier preparation of functional silicon powder for automobile exhaust purifier the most according to claim 1
Method, it is characterised in that: in step (2), with 13000m3/ h absorbing quantity removes bulky grain by cyclone separator, then passes through gas
Stream is delivered to high speed sorting grading system under 3900rpm rotating speed and obtains component B.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892058A (en) * | 2020-07-04 | 2020-11-06 | 江苏联瑞新材料股份有限公司 | Superfine silicon powder for surface mount discrete device and preparation method thereof |
| CN111974527A (en) * | 2020-07-07 | 2020-11-24 | 江苏联瑞新材料股份有限公司 | Preparation method of high-purity fused silica micropowder for IC packaging |
| CN112811430A (en) * | 2021-01-06 | 2021-05-18 | 江苏联瑞新材料股份有限公司 | High-purity superfine silicon dioxide for honeycomb ceramic carrier and preparation method thereof |
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|---|---|---|---|---|
| CN101659393A (en) * | 2009-08-21 | 2010-03-03 | 江苏大学 | Method for preparing nanometer silica micropowder |
| CN103011840A (en) * | 2012-12-18 | 2013-04-03 | 连云港东海硅微粉有限责任公司 | Preparation method for ultrafine fused silica powder used in automobile honeycomb ceramic carrier |
| CN104671741A (en) * | 2015-01-14 | 2015-06-03 | 江苏蓝烽新材料科技有限公司 | Preparation method of large-size honeycomb ceramic carrier for diesel engine |
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2016
- 2016-07-29 CN CN201610606028.9A patent/CN106278207A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101659393A (en) * | 2009-08-21 | 2010-03-03 | 江苏大学 | Method for preparing nanometer silica micropowder |
| CN103011840A (en) * | 2012-12-18 | 2013-04-03 | 连云港东海硅微粉有限责任公司 | Preparation method for ultrafine fused silica powder used in automobile honeycomb ceramic carrier |
| CN104671741A (en) * | 2015-01-14 | 2015-06-03 | 江苏蓝烽新材料科技有限公司 | Preparation method of large-size honeycomb ceramic carrier for diesel engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892058A (en) * | 2020-07-04 | 2020-11-06 | 江苏联瑞新材料股份有限公司 | Superfine silicon powder for surface mount discrete device and preparation method thereof |
| CN111974527A (en) * | 2020-07-07 | 2020-11-24 | 江苏联瑞新材料股份有限公司 | Preparation method of high-purity fused silica micropowder for IC packaging |
| CN112811430A (en) * | 2021-01-06 | 2021-05-18 | 江苏联瑞新材料股份有限公司 | High-purity superfine silicon dioxide for honeycomb ceramic carrier and preparation method thereof |
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