CN105152658A - Anticorrosion composite silicon brick and preparation method thereof - Google Patents
Anticorrosion composite silicon brick and preparation method thereof Download PDFInfo
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- 239000011449 brick Substances 0.000 title claims abstract description 66
- 239000002131 composite material Substances 0.000 title claims abstract description 46
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 30
- 239000010703 silicon Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 255
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 120
- 239000002994 raw material Substances 0.000 claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 20
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 19
- 239000002893 slag Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000001728 nano-filtration Methods 0.000 claims description 25
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 19
- 239000007767 bonding agent Substances 0.000 claims description 16
- 235000012054 meals Nutrition 0.000 claims description 16
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 15
- 239000010438 granite Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 239000011591 potassium Substances 0.000 claims description 15
- 229910052700 potassium Inorganic materials 0.000 claims description 15
- 239000008187 granular material Substances 0.000 claims description 14
- 239000000284 extract Substances 0.000 claims description 13
- 239000011521 glass Substances 0.000 claims description 13
- 241001474374 Blennius Species 0.000 claims description 12
- 229910052582 BN Inorganic materials 0.000 claims description 10
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 10
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 10
- 238000005119 centrifugation Methods 0.000 claims description 10
- 239000012141 concentrate Substances 0.000 claims description 10
- 230000001351 cycling effect Effects 0.000 claims description 10
- 238000000502 dialysis Methods 0.000 claims description 10
- 150000005690 diesters Chemical class 0.000 claims description 10
- 239000010436 fluorite Substances 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 10
- 235000013980 iron oxide Nutrition 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 10
- 239000002105 nanoparticle Substances 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 238000002791 soaking Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000571 coke Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000010790 dilution Methods 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 5
- 238000007598 dipping method Methods 0.000 claims description 5
- 238000007710 freezing Methods 0.000 claims description 5
- 230000008014 freezing Effects 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000008399 tap water Substances 0.000 claims description 5
- 235000020679 tap water Nutrition 0.000 claims description 5
- 230000003628 erosive effect Effects 0.000 abstract description 11
- 230000035939 shock Effects 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 230000033558 biomineral tissue development Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000010304 firing Methods 0.000 abstract 1
- 239000000920 calcium hydroxide Substances 0.000 description 6
- 235000011116 calcium hydroxide Nutrition 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910052728 basic metal Inorganic materials 0.000 description 4
- 150000003818 basic metals Chemical class 0.000 description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical group O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000001458 anti-acid effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001721 carbon Chemical group 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 241001504664 Crossocheilus latius Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- DPTATFGPDCLUTF-UHFFFAOYSA-N phosphanylidyneiron Chemical compound [Fe]#P DPTATFGPDCLUTF-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Abstract
The present invention relates to a anticorrosion composite silicon brick and a preparation method thereof, wherein silica rock is adopted as a main raw material, the main raw material silica rock is divided into silica rock particles, silica rock powder, silica rock coarse powder and silica rock fine powder according to the particle size, and the composite composition comprises silica rock particles, silica rock powder, silica rock coarse powder, silica rock fine powder, graphene, a composite mineralization agent, a binder and nanometer zirconia. According to the present invention, the composite silicon brick has characteristics of excellent thermal shock resistance, strong slag erosion resistance, strong alkali metal erosion resistance, excellent erosion resistance, excellent thermal insulation and good high temperature volume stability; with the graphene, the internal contact of the brick is close so as to reduce the stress generated by expansion during the firing and prevent the product from loosening or cracking; and with the high strength of the graphene, the excellent mechanical property of the silicon brick is ensured, and the acid-alkali corrosion resistance of the silicon brick can be enhanced.
Description
Technical field
The present invention relates to technical field of refractory materials, particularly relate to a kind of good in thermal shock, slag-resistant, basic metal erosion performance are strong, anticorrosive composite silicon brick of resistance to erosion, heat preservation and insulation excellence, high volume good stability and preparation method thereof.
Background technology
Along with the growing tension of the energy, various countries are to the development of hot industry energy-saving material, production and use pay attention to day by day.Silica brick, owing to having the characteristics such as refractoriness under load point is high, high volume good stability, life-time service do not shrink, is widely applied and studies in lightweight refractory system.
Expand because the quick crystal conversion of silica in heat-processed produces comparatively large vol, make burning till than other refractory materials difficulties of silica brick.The core technology manufacturing silica brick is the choice and utilization of mineralizer, and its objective is it is to control silica brick in sintering process, the crystal conversion due to silica produces the volumetric expansion that larger stress causes in brick, avoids silica brick to ftracture when burning till.Requiring when silica brick burns till to change quartz into stable high temperature mineral phase tridymite and cristobalite as much as possible, in order to promote this conversion, usually in making silica brick process, adding mineralizer.Mineralizer can generate the oxide compound of liquid phase with silicon dioxde reaction, and its effect is the refractoriness significantly not reducing goods accelerating quartz transition while, and because of the stress produced that expands when adobe can be suppressed to burn till, and prevents the loose or cracking of goods.
The mineralizer of the actual use of current making silica brick is ferric oxide and calcium oxide mostly, and they not only have These characteristics, and can ensure that silica brick has good mechanical behavior under high temperature.But the ferric oxide used in production and calcium oxide add with fine powder form and milk of lime form respectively, the former granularity is thin not, disperses even not in silica brick; What in fact the latter added is calcium hydroxide, and its lime milk solution easily flocculates, and not easily disperses, therefore poor as mineralizer effect.
Geim and Novoselov of Man Chesidun university of Britain in 2004 obtains self-existent two-dimensional graphene (Gra-phene by tape stripping high starch breeding, GN), since crystal, Graphene has become one of extremely concerned study hotspot of material science.In fact Graphene is exactly the graphite of monoatomic layer, and it has unique two-dirnentional structure and excellent mechanics, thermodynamics, optics and electric property.
Graphene is at present the thinnest is in the world the hardest nano material also, and it is almost completely transparent, to the light absorbing 2.3%, thermal conductivity up to 5300W/mk, higher than carbon nanotube and diamond.Graphene is a kind of novel material of the individual layer sheet structure be made up of carbon atom, has intensity high, and specific surface area is large, high chemical reactivity, the feature of high fillibility.
Chinese patent publication No. CN102557684A, date of publication on July 11st, 2012, name is called silica brick for coke oven, and described silica brick comprises stock and adjunct, represents with weight proportion, silica meal 200-500 part in composition of raw materials, powder 330-380 part in silica, silica fine powder 80-130 part, as residual silica brick 80-120 part of chamotte powder, auxiliary material comprise account for the mineralizer of raw material gross weight 1.2%, the milk of lime of 8% and 1% paper pulp, mineralizer is by the manganese powder of Manganse Dioxide content >=25%; The iron phosphorus powder of ferrous oxide content >=65% mixes in the ratio of 1:1; Powder, silica fine powder and the residual silica brick as chamotte powder in silica meal, silica added in wet stone roller, then adding mineralizer and be dry mixed 4-5 minute, then adding milk of lime, after rolling 10-15 minute, then add paper pulp, mixing even to pug, roll, shaping base.Its weak point is, ferric oxide granularity is thin not, disperses even not in silica brick; What in fact calcium oxide added is calcium hydroxide, and its lime milk solution easily flocculates, and not easily disperses, therefore poor as mineralizer effect.
Summary of the invention
The object of the invention is to solve ferric oxide granularity when existing silica brick makes thin not, disperseing even not in silica brick; What in fact calcium oxide added is calcium hydroxide, its lime milk solution easily flocculates, the defect of not easily disperseing and provide a kind of good in thermal shock, slag-resistant, basic metal erosion performance are strong, and resistance to erosion, heat preservation and insulation are excellent, the anticorrosive composite silicon brick of high volume good stability.
Another object of the present invention is the preparation method in order to provide this silica brick.
To achieve these goals, the present invention is by the following technical solutions:
A kind of anticorrosive composite silicon brick, take silica as main raw material, main raw material silica is divided into silica granule, silica end, silica meal and silica fine powder by particle diameter, and described anticorrosive composite silicon brick consists of by following weight percent: silica granule 15-30%, silica end 20-40%, silica meal 10-20%, silica fine powder 6-19%, Graphene 4-8%, composite mineralizer 2-4%, bonding agent 2-5% and nano zircite 5-10%.In the technical program, Graphene is a kind of novel material of the individual layer sheet structure be made up of carbon atom, has the feature of the high ﹑ specific surface area of strong degree large ﹑ height chemical reaction property ﹑ alive high fillibility; In silica brick, add Graphene makes silica brick interior contact more tight, thus because of the stress produced that expands when reducing to burn till, prevents goods from loosening or cracking; The high strength of Graphene ensure that the excellent mechanical property of silica brick, can promote the antiacid caustic corrosion performance of silica brick simultaneously.
As preferably, the particle diameter of silica granule is 3.5-5mm, and the particle diameter at silica end is 1-3mm, and the particle diameter of silica meal is 220-400 μm, and the particle diameter of silica fine powder is 0.5-2 μm.
As preferably, in the raw material composition of composite mineralizer, the weight part of each component is: 50 parts of granites, 30 parts of fluorites, 25 parts of potassium felspar sands, 20 parts of diatom oozes, 2 parts of boron nitride, 3 parts of glass microballons, 10 parts of nano-sized iron oxides and 5 parts of nano zine oxides.In the technical program, glass microballon granularity is suitable, good fluidity, dispersity is high, glass microballon is added in composite mineralizer, can be dispersed in silica brick internal height, acceleration of sintering, and silica brick is had evenly weave construction, improve intensity and the thermal shock resistance of goods, the granularity of nano zine oxide is tiny, can fill fine pores, reduce the void content of goods, improve volume density.
As preferably, described composite mineralizer is prepared by following steps: 1) granite, fluorite, potassium felspar sand pulverized 100-300 mesh sieve respectively and removed impurity; 2) take granite, fluorite, potassium felspar sand by formula, add diatom ooze and boron nitride, adopt wet ball grinding fine grinding process to wear into slurry, then 400-500 mesh sieve is crossed, then spray nano-sized iron oxide, ultrasonic vibration 2h in 75 DEG C of water-baths, after dry, cold cycling obtains for 5-10 time; 3) by step 2) slurry carry out drying, drying temperature 220-280 DEG C, spray glass microballon and nano zine oxide after being dried to moisture content≤3-5%, while sprinkling and ultrasonic vibration, ultrasonic power is 100-120kw; Described cold cycling is be incubated 2 hours, at being then cooled to-4 DEG C freezing 3 hours at 240 DEG C.
As preferably, described bonding agent is Seaweed Extract, and the preparation method of this bonding agent is as follows: 1) clean: the tap water that marine alga raw material is 45-50 DEG C soaks 2-3 hour, then cleans up;
2) pulverize, centrifugal: the marine alga cleaned up, vacuum breaking, add the ethanol of marine alga volume 30 times and fourth diester solution soaking and boil, the volume ratio of ethanol and fourth diester is 1:1, then centrifugation is removed slag to obtain marine alga clear liquid, the rotating speed of whizzer is 4000 ~ 6000rpm, and centrifugation time is 15-20min;
3) nanofiltration: diluted by the pure water of marine alga clear liquid with 5-10 times of volume, then carries out dialysis by nanofiltration membrane and concentrates, and the 0.1-0.2 that the dialysis of marine alga clear liquid is concentrated into dilution front volume doubly obtains nanofiltration concentrated solution, and the molecular weight cut-off of described nanofiltration membrane is 600-700Da;
4) concentrate drying: the further vacuum concentration of nanofiltration concentrated solution to solid content is 40-60%, then in spray-dryer, spraying dry obtains the Powdered Seaweed Extract of water content 2-3%.
In the technical program, Seaweed Extract, as bonding agent, silica brick inside can be made to combine closely, and the lignosulfite that existing technique is commonly used can be more serious for environmental pollution, Seaweed Extract then extracts obtained from naturally occurring marine alga, environmental protection.
A kind of preparation method of anticorrosive composite silicon brick, described preparation method is: each raw material weighs by above proportioning, through mixing, shaping, make adobe with mold pressing vibrating forming machine, adobe toasts 20-25 hour at 550-650 DEG C, then the adobe after toasting is put into impregnating autoclave and is vacuumized process, vacuum pressure is 0.05-0.08mpa, pressurize 40-50 minute, then adds soaker, continues pressurize 3-5 hour, adobe after dipping 1200-1285 DEG C of roasting, soaking time 75-85 hour.
As preferably, soaker is the refinery coke of molten state, and the add-on of soaker is that liquid level exceeds adobe upper surface 500-700mm.
Beneficial effect of the present invention is:
1) silica brick good in thermal shock of the present invention, slag-resistant, basic metal erosion performance are strong, and resistance to erosion, heat preservation and insulation are excellent, the anticorrosive composite silicon brick of high volume good stability;
2) in composite mineralizer, add glass microballon, can be dispersed in silica brick internal height, acceleration of sintering, and silica brick is had evenly weave construction, improve the intensity of goods and thermal shock resistance;
3) granularity of nano zine oxide is tiny, can fill fine pores, reduces the void content of goods, improves volume density;
4) Graphene makes silica brick interior contact more tight, thus because of the stress produced that expands when reducing to burn till, prevents goods from loosening or cracking;
5) high strength of Graphene ensure that the excellent mechanical property of silica brick, can promote the antiacid caustic corrosion performance of silica brick simultaneously;
6) preparation method of the present invention is simple, abundant raw material, is applicable to factorial praluction.
Embodiment
Below in conjunction with specific embodiment, the present invention is further explained, the restriction not to its protection domain.
Dioxide-containing silica >=97wt% in the silica granule that the present invention adopts, silica end, silica meal, silica fine powder, the particle diameter of silica granule is 3.5-5mm, the particle diameter at silica end is 1-3mm, and the particle diameter of silica meal is 220-400 μm, and the particle diameter of silica fine powder is 0.5-2 μm.
In the present invention, if not refer in particular to, the raw material adopted all can be buied from market or this area is conventional, and the method in following embodiment, if no special instructions, is the ordinary method of this area.
Embodiment 1
A kind of anticorrosive composite silicon brick, take silica as main raw material, main raw material silica is divided into silica granule, silica end, silica meal and silica fine powder by particle diameter, and described anticorrosive composite silicon brick consists of by following weight percent: silica granule 15%, silica end 40%, silica meal 20%, silica fine powder 6%, Graphene 4%, composite mineralizer 3%, bonding agent 2% and nano zircite 10%.
In the raw material composition of composite mineralizer, the weight part of each component is: 50 parts of granites, 30 parts of fluorites, 25 parts of potassium felspar sands, 20 parts of diatom oozes, 2 parts of boron nitride, 3 parts of glass microballons, 10 parts of nano-sized iron oxides and 5 parts of nano zine oxides.Composite mineralizer is prepared by following steps: 1) granite, fluorite, potassium felspar sand pulverized 100-300 mesh sieve respectively and removed impurity; 2) take granite, fluorite, potassium felspar sand by formula, add diatom ooze and boron nitride, adopt wet ball grinding fine grinding process to wear into slurry, then 400-500 mesh sieve is crossed, then spray nano-sized iron oxide, ultrasonic vibration 2h in 75 DEG C of water-baths, after dry, cold cycling obtains for 5-10 time; 3) by step 2) slurry carry out drying, drying temperature 220-280 DEG C, spray glass microballon and nano zine oxide after being dried to moisture content≤3-5%, while sprinkling and ultrasonic vibration, ultrasonic power is 100-120kw; Described cold cycling is be incubated 2 hours, at being then cooled to-4 DEG C freezing 3 hours at 240 DEG C.
Bonding agent is Seaweed Extract, and the preparation method of this bonding agent is as follows: 1) clean: the marine alga raw material tap water of 45 DEG C soaks 2 hours, then cleans up;
2) pulverize, centrifugal: the marine alga cleaned up, vacuum breaking, adds the ethanol of marine alga volume 30 times and fourth diester solution soaking and boils, the volume ratio of ethanol and fourth diester is 1:1, then centrifugation is removed slag to obtain marine alga clear liquid, and the rotating speed of whizzer is 4000rpm, and centrifugation time is 15min;
3) nanofiltration: diluted by the pure water of marine alga clear liquid with 5 times of volumes, then carries out dialysis by nanofiltration membrane and concentrates, the dialysis of marine alga clear liquid be concentrated into dilution 0.1 times of front volume nanofiltration concentrated solution, the molecular weight cut-off of described nanofiltration membrane is 600-700Da;
4) concentrate drying: the further vacuum concentration of nanofiltration concentrated solution to solid content is 40%, then in spray-dryer, spraying dry obtains the Powdered Seaweed Extract of water content 2%.
The preparation method of anticorrosive composite silicon brick, described preparation method is: each raw material weighs by above proportioning, through mixing, shaping, make adobe with mold pressing vibrating forming machine, adobe is toasted 20 hours at 550 DEG C, then the adobe after toasting is put into impregnating autoclave and is vacuumized process, vacuum pressure is 0.05mpa, pressurize 40 minutes, then adds soaker, continues pressurize 3 hours, adobe after dipping 1200 DEG C of roastings, soaking time 75 hours.Soaker is the refinery coke of molten state, and the add-on of soaker is that liquid level exceeds adobe upper surface 500mm.
Embodiment 2
A kind of anticorrosive composite silicon brick, take silica as main raw material, main raw material silica is divided into silica granule, silica end, silica meal and silica fine powder by particle diameter, and described anticorrosive composite silicon brick consists of by following weight percent: silica granule 20%, silica end 30%, silica meal 15%, silica fine powder 19%, Graphene 6%, composite mineralizer 2%, bonding agent 3% and nano zircite 5%.
In the raw material composition of composite mineralizer, the weight part of each component is: 50 parts of granites, 30 parts of fluorites, 25 parts of potassium felspar sands, 20 parts of diatom oozes, 2 parts of boron nitride, 3 parts of glass microballons, 10 parts of nano-sized iron oxides and 5 parts of nano zine oxides.Composite mineralizer is prepared by following steps: 1) granite, fluorite, potassium felspar sand pulverized 100-300 mesh sieve respectively and removed impurity; 2) take granite, fluorite, potassium felspar sand by formula, add diatom ooze and boron nitride, adopt wet ball grinding fine grinding process to wear into slurry, then 400-500 mesh sieve is crossed, then spray nano-sized iron oxide, ultrasonic vibration 2h in 75 DEG C of water-baths, after dry, cold cycling obtains for 5-10 time; 3) by step 2) slurry carry out drying, drying temperature 220-280 DEG C, spray glass microballon and nano zine oxide after being dried to moisture content≤3-5%, while sprinkling and ultrasonic vibration, ultrasonic power is 100-120kw; Described cold cycling is be incubated 2 hours, at being then cooled to-4 DEG C freezing 3 hours at 240 DEG C.
Bonding agent is Seaweed Extract, and the preparation method of this bonding agent is as follows: 1) clean: the marine alga raw material tap water of 48 DEG C soaks 2.5 hours, then cleans up;
2) pulverize, centrifugal: the marine alga cleaned up, vacuum breaking, adds the ethanol of marine alga volume 30 times and fourth diester solution soaking and boils, the volume ratio of ethanol and fourth diester is 1:1, then centrifugation is removed slag to obtain marine alga clear liquid, and the rotating speed of whizzer is 5000rpm, and centrifugation time is 18min;
3) nanofiltration: diluted by the pure water of marine alga clear liquid with 7 times of volumes, then carries out dialysis by nanofiltration membrane and concentrates, the dialysis of marine alga clear liquid be concentrated into dilution 0.2 times of front volume nanofiltration concentrated solution, the molecular weight cut-off of described nanofiltration membrane is 600-700Da;
4) concentrate drying: the further vacuum concentration of nanofiltration concentrated solution to solid content is 20%, then in spray-dryer, spraying dry obtains the Powdered Seaweed Extract of water content 2.5%.
The preparation method of anticorrosive composite silicon brick, described preparation method is: each raw material weighs by above proportioning, through mixing, shaping, make adobe with mold pressing vibrating forming machine, adobe is toasted 23 hours at 600 DEG C, then the adobe after toasting is put into impregnating autoclave and is vacuumized process, vacuum pressure is 0.06mpa, pressurize 45 minutes, then adds soaker, continues pressurize 4 hours, adobe after dipping 1250 DEG C of roastings, soaking time 80 hours.Soaker is the refinery coke of molten state, and the add-on of soaker is that liquid level exceeds adobe upper surface 600mm.
Embodiment 3
A kind of anticorrosive composite silicon brick, take silica as main raw material, main raw material silica is divided into silica granule, silica end, silica meal and silica fine powder by particle diameter, and described anticorrosive composite silicon brick consists of by following weight percent: silica granule 30%, silica end 20%, silica meal 10%, silica fine powder 15%, Graphene 8%, composite mineralizer 4%, bonding agent 5% and nano zircite 8%.
In the raw material composition of composite mineralizer, the weight part of each component is: 50 parts of granites, 30 parts of fluorites, 25 parts of potassium felspar sands, 20 parts of diatom oozes, 2 parts of boron nitride, 3 parts of glass microballons, 10 parts of nano-sized iron oxides and 5 parts of nano zine oxides.Composite mineralizer is prepared by following steps: 1) granite, fluorite, potassium felspar sand pulverized 100-300 mesh sieve respectively and removed impurity; 2) take granite, fluorite, potassium felspar sand by formula, add diatom ooze and boron nitride, adopt wet ball grinding fine grinding process to wear into slurry, then 400-500 mesh sieve is crossed, then spray nano-sized iron oxide, ultrasonic vibration 2h in 75 DEG C of water-baths, after dry, cold cycling obtains for 5-10 time; 3) by step 2) slurry carry out drying, drying temperature 220-280 DEG C, spray glass microballon and nano zine oxide after being dried to moisture content≤3-5%, while sprinkling and ultrasonic vibration, ultrasonic power is 100-120kw; Described cold cycling is be incubated 2 hours, at being then cooled to-4 DEG C freezing 3 hours at 240 DEG C.
Bonding agent is Seaweed Extract, and the preparation method of this bonding agent is as follows: 1) clean: the marine alga raw material tap water of 50 DEG C soaks 3 hours, then cleans up;
2) pulverize, centrifugal: the marine alga cleaned up, vacuum breaking, adds the ethanol of marine alga volume 30 times and fourth diester solution soaking and boils, the volume ratio of ethanol and fourth diester is 1:1, then centrifugation is removed slag to obtain marine alga clear liquid, and the rotating speed of whizzer is 6000rpm, and centrifugation time is 20min;
3) nanofiltration: diluted by the pure water of marine alga clear liquid with 10 times of volumes, then carries out dialysis by nanofiltration membrane and concentrates, the dialysis of marine alga clear liquid be concentrated into dilution 0.2 times of front volume nanofiltration concentrated solution, the molecular weight cut-off of described nanofiltration membrane is 600-700Da;
4) concentrate drying: the further vacuum concentration of nanofiltration concentrated solution to solid content is 60%, then in spray-dryer, spraying dry obtains the Powdered Seaweed Extract of water content 3%.
The preparation method of anticorrosive composite silicon brick, described preparation method is: each raw material weighs by above proportioning, through mixing, shaping, make adobe with mold pressing vibrating forming machine, adobe is toasted 25 hours at 650 DEG C, then the adobe after toasting is put into impregnating autoclave and is vacuumized process, vacuum pressure is 0.08mpa, pressurize 50 minutes, then adds soaker, continues pressurize 5 hours, adobe after dipping 1285 DEG C of roastings, soaking time 85 hours.Soaker is the refinery coke of molten state, and the add-on of soaker is that liquid level exceeds adobe upper surface 700mm.
Comparative example 1, commercially available silica brick.
The performance of the silica brick of silica brick prepared by embodiment 1-3 and comparative example 1 is in table 1.
Table 1, performance
| Void content, % | Volume density, g/ Cm 3 | Compressive strength, Mpa | Remaining quartz, % | Conforming product rate % | |
| Embodiment 1 | 14.3 | 2.12 | 66.5 | 0.3 | 96 |
| Embodiment 2 | 14.7 | 2.08 | 68.1 | 0.7 | 95 |
| Embodiment 3 | 15.6 | 1.99 | 63.7 | 0.5 | 94 |
| Comparative example 1 | 22.3 | 1.9 | 45.6 | 2.1 | 80 |
As can be seen from Table 1, silica brick good in thermal shock prepared by the present invention, slag-resistant, basic metal erosion performance are strong, and resistance to erosion, heat preservation and insulation are excellent, high volume good stability.
Claims (7)
1. an anticorrosive composite silicon brick, take silica as main raw material, it is characterized in that, main raw material silica is divided into silica granule, silica end, silica meal and silica fine powder by particle diameter, and described anticorrosive composite silicon brick consists of by following weight percent: silica granule 15-30%, silica end 20-40%, silica meal 10-20%, silica fine powder 6-19%, Graphene 4-8%, composite mineralizer 2-4%, bonding agent 2-5% and nano zircite 5-10%.
2. the anticorrosive composite silicon brick of one according to claim 1, is characterized in that, the particle diameter of silica granule is 3.5-5mm, and the particle diameter at silica end is 1-3mm, and the particle diameter of silica meal is 220-400 μm, and the particle diameter of silica fine powder is 0.5-2 μm.
3. the anticorrosive composite silicon brick of one according to claim 1, it is characterized in that, in the raw material composition of composite mineralizer, the weight part of each component is: 50 parts of granites, 30 parts of fluorites, 25 parts of potassium felspar sands, 20 parts of diatom oozes, 2 parts of boron nitride, 3 parts of glass microballons, 10 parts of nano-sized iron oxides and 5 parts of nano zine oxides.
4. the anticorrosive composite silicon brick of the one according to claim 1 or 3, is characterized in that, described composite mineralizer is prepared by following steps: 1) granite, fluorite, potassium felspar sand pulverized 100-300 mesh sieve respectively and removed impurity; 2) take granite, fluorite, potassium felspar sand by formula, add diatom ooze and boron nitride, adopt wet ball grinding fine grinding process to wear into slurry, then 400-500 mesh sieve is crossed, then spray nano-sized iron oxide, ultrasonic vibration 2h in 75 DEG C of water-baths, after dry, cold cycling obtains for 5-10 time; 3) by step 2) slurry carry out drying, drying temperature 220-280 DEG C, spray glass microballon and nano zine oxide after being dried to moisture content≤3-5%, while sprinkling and ultrasonic vibration, ultrasonic power is 100-120kw; Described cold cycling is be incubated 2 hours, at being then cooled to-4 DEG C freezing 3 hours at 240 DEG C.
5. the anticorrosive composite silicon brick of one according to claim 1, is characterized in that, described bonding agent is Seaweed Extract, and the preparation method of this bonding agent is as follows: 1) clean: the tap water that marine alga raw material is 45-50 DEG C soaks 2-3 hour, then cleans up;
2) pulverize, centrifugal: the marine alga cleaned up, vacuum breaking, add the ethanol of marine alga volume 30 times and fourth diester solution soaking and boil, the volume ratio of ethanol and fourth diester is 1:1, then centrifugation is removed slag to obtain marine alga clear liquid, the rotating speed of whizzer is 4000 ~ 6000rpm, and centrifugation time is 15-20min;
3) nanofiltration: diluted by the pure water of marine alga clear liquid with 5-10 times of volume, then carries out dialysis by nanofiltration membrane and concentrates, and the 0.1-0.2 that the dialysis of marine alga clear liquid is concentrated into dilution front volume doubly obtains nanofiltration concentrated solution, and the molecular weight cut-off of described nanofiltration membrane is 600-700Da;
4) concentrate drying: the further vacuum concentration of nanofiltration concentrated solution to solid content is 40-60%, then in spray-dryer, spraying dry obtains the Powdered Seaweed Extract of water content 2-3%.
6. the preparation method of an anticorrosive composite silicon brick as claimed in claim 1, it is characterized in that, described preparation method is: each raw material weighs by above proportioning, through mixing, shaping, make adobe with mold pressing vibrating forming machine, adobe toasts 20-25 hour at 550-650 DEG C, then impregnating autoclave is put in the adobe after baking and vacuumize process, vacuum pressure is 0.05-0.08mpa, pressurize 40-50 minute, then soaker is added, continue pressurize 3-5 hour, the adobe after dipping 1200-1285 DEG C of roasting, soaking time 75-85 hour.
7. the preparation method of a kind of anticorrosive composite silicon brick according to claim 6, is characterized in that, soaker is the refinery coke of molten state, and the add-on of soaker is that liquid level exceeds adobe upper surface 500-700mm.
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| US20050250052A1 (en) * | 2004-05-10 | 2005-11-10 | Nguyen Khe C | Maskless lithography using UV absorbing nano particle |
| CN103880439A (en) * | 2014-02-17 | 2014-06-25 | 武汉科技大学 | Preparation method of light-weight silica brick |
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| US20050250052A1 (en) * | 2004-05-10 | 2005-11-10 | Nguyen Khe C | Maskless lithography using UV absorbing nano particle |
| CN103880439A (en) * | 2014-02-17 | 2014-06-25 | 武汉科技大学 | Preparation method of light-weight silica brick |
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