CN108911599A - A method of iron oxide and aerosil pad are prepared simultaneously from iron tailings - Google Patents
A method of iron oxide and aerosil pad are prepared simultaneously from iron tailings Download PDFInfo
- Publication number
- CN108911599A CN108911599A CN201810790735.7A CN201810790735A CN108911599A CN 108911599 A CN108911599 A CN 108911599A CN 201810790735 A CN201810790735 A CN 201810790735A CN 108911599 A CN108911599 A CN 108911599A
- Authority
- CN
- China
- Prior art keywords
- iron tailings
- gel
- aerosil
- pad
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 177
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 103
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 88
- 229910002012 Aerosil® Inorganic materials 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 48
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 40
- 230000032683 aging Effects 0.000 claims abstract description 38
- 239000011521 glass Substances 0.000 claims abstract description 28
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 27
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 17
- 239000002904 solvent Substances 0.000 claims abstract description 15
- 239000000706 filtrate Substances 0.000 claims abstract description 12
- 239000004965 Silica aerogel Substances 0.000 claims abstract description 11
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 11
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 9
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000004913 activation Effects 0.000 claims abstract description 8
- 239000003729 cation exchange resin Substances 0.000 claims abstract description 8
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000908 ammonium hydroxide Substances 0.000 claims abstract description 7
- 239000011858 nanopowder Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 40
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 25
- 229910052710 silicon Inorganic materials 0.000 claims description 25
- 239000010703 silicon Substances 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000084 colloidal system Substances 0.000 claims description 16
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 14
- 230000004048 modification Effects 0.000 claims description 12
- 238000012986 modification Methods 0.000 claims description 12
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 230000001376 precipitating effect Effects 0.000 claims description 6
- 238000002604 ultrasonography Methods 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000013312 flour Nutrition 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 239000002910 solid waste Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000499 gel Substances 0.000 description 50
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 12
- 238000002156 mixing Methods 0.000 description 12
- 235000011114 ammonium hydroxide Nutrition 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000003292 glue Substances 0.000 description 6
- 239000005051 trimethylchlorosilane Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 229910002808 Si–O–Si Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 241000186216 Corynebacterium Species 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000352 supercritical drying Methods 0.000 description 1
- 239000011240 wet gel Substances 0.000 description 1
Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/005—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing gelatineous or gel forming binders, e.g. gelatineous Al(OH)3, sol-gel binders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/11—Powder tap density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Silicon Compounds (AREA)
Abstract
The invention discloses a kind of methods for preparing iron oxide and aerosil pad simultaneously from iron tailings.It using iron tailings as raw material, it is successively ground crush, high-temperature roasting activation, iron tailings powder after activation and mixed in hydrochloric acid be simultaneously stirred to react, and obtains filter residue and filtrate;Heating is carried out after filter residue is baking mixed with sodium hydrate particle in involvement water to react, cross cation exchange resin; it is adjusted to neutrality again with ammonia spirit; immerse glass mat; repeatedly extrude glass mat; it is evenly distributed to silica solution in glass mat; stand gel after gel mat, then through aging, exchange of solvent, surface it is modified hydrophobic silica aerogel pad;Filtrate adjusts pH alkalescent with ammonium hydroxide, stands filtering, dry ferric oxide nano powder.The entire raw materials technology of the present invention is cheap and easy to get, not high to equipment requirement, and reaction condition is mild, and can largely handle this solid waste of iron tailings, application value with higher.
Description
Technical field
The invention belongs to field of inorganic materials, and in particular to a kind of to prepare iron oxide and silica gas simultaneously from iron tailings
The method of gel mat.
Background technique
Mineral Resources in China exploitation total scale occupy world forefront, and the outstanding feature of China's iron ore deposit is that grade is low, total
Raw associated minerals are more, lead to that a large amount of iron tailings can be generated in ore dressing process, 2.5-3.0t tail will be discharged in every production 1t iron ore concentrate
Mine.Stockpiling iron tailings not only occupies a large amount of soils, also pollutes to soil, water body, air etc., destroys ecological environment, shadow
Sound is very big.
The comprehensive utilization ratio of iron tailings is very low at present, less than 20%, and is mostly used as building filler material, high-end
Product is seldom, and mainly due to factors such as preparation process complexity, severe reaction conditions, being allowed to can not mass production.
Iron oxide micro mist is important the raw material of industry, it not only have many advantages, such as it is fast light, resistant to chemical etching, nontoxic, and
And with good dispersibility, tinting strength, tinting power and the ability for absorbing ultraviolet light, it can be used as the multiple fields such as building, coating, smelting iron.
Aerosil is a kind of inorganic material of high porosity, the spy for both having had common inorganic material nonflammable
Property, and have the stronger thermal insulation property of organic foam material, it is a kind of good heat-insulating heat-preserving material.But due to its material sheet
The characteristic of the easy fragmentation of body, again limits its application space, is badly in need of the thermal insulation material of a kind of heat-insulation and heat-preservation and good mechanical property.
Background in view of the above technology using iron tailings as raw material, while preparing ferric oxide powder and aerosil pad
Both ferro element can be collected to greatest extent, and being also prepared for one kind has stronger heat preservation and insulation, and not easily broken dioxy
SiClx airsetting rubber mat can have the material of preferable heat preservation and insulation while largely processing iron tailings with output, have very big
Meaning.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides one kind using iron tailings as raw material, while preparing ferric oxide powder
And the method for aerosil pad, this method can largely handle this solid waste of iron tailings, and reaction condition
Mildly, it is easy to industrialize, aerosil pad and ferric oxide powder obtained have a wide range of applications again.
A kind of method preparing iron oxide and aerosil pad simultaneously from iron tailings, feature mainly include
Following steps:
1)Iron tailings is ground and is sieved with 100 mesh sieve, obtain it is levigate after iron tailings;
2)By step 1)It is levigate after iron tailings be put into Muffle furnace and be heated to 850-950 DEG C and activated, keep the temperature 4.5-5.5
Hour, it is made the iron tailings powder after activation after being cooled to room temperature, iron tailings powder after activation and mixed in hydrochloric acid are simultaneously stirred to react, instead
It is filtered after answering, filter residue is dried, filtrate container collection;
3)By step 2)Filter residue and sodium hydrate particle after middle drying are mixed and stirred for uniformly, 500-600 DEG C in Muffle furnace
It is kept for 1.5-2.5 hours, will obtain carrying out heating reaction in the iron tailings involvement water after alkali fusion reacts, and filter after reaction
Thick silicon solution;
4)By step 3)In thick silicon solution obtained cross cation exchange resin, then being adjusted to pH value with ammonia spirit is 6.5-
7.5, glass mat is immersed in its non-gel, glass mat is repeatedly extruded, silica solution is made to be evenly distributed to glass fibers
It ties up in felt, obtains gel mat after standing gel;
5)Gel aging:In step 4)In gel Ageing solution is added in gel mat obtained, stand aging at room temperature, obtain aging
Gel mat afterwards;
6)Exchange of solvent:By step 5)Gel mat after middle aging, which immerses 22-26 hours in n-hexane, replaces the water in gel
Out, colloid is obtained;
7)Surface is modified:By step 6)In colloid obtained immerse modification liquid, stand 12-24 hours at room temperature, will finally be made
90-120 DEG C of gel constant pressure and dry 6-8 hours, be able to iron tailings be raw material preparation hydrophobic silica aerogel pad;
8)By step 2)In filtrate to adjust pH with ammonium hydroxide under ultrasound environments be 7-8, there are a large amount of precipitatings, filtered after standing,
It is put into Muffle furnace after filter residue and drying, roasting temperature 1.5-2.5 hours of 600 DEG C -700 DEG C, iron oxide is finally made and receives
Rice flour body.
The method that the slave iron tailings prepares iron oxide and aerosil pad simultaneously, it is characterised in that step 1)
In the ingredient of iron tailings include SiO2、CaO、MgO、Al2O3、Fe2O3。
The method that the slave iron tailings prepares iron oxide and aerosil pad simultaneously, it is characterised in that step 2)
In concentration of hydrochloric acid be 1-3mol/L, preferably 2mol/L, activation mine tailing and hydrochloric acid volume ratio be 1:1.5-2.1, preferably
1.6-1.8。
The method that the slave iron tailings prepares iron oxide and aerosil pad simultaneously, it is characterised in that step 3)
In filter residue and sodium hydroxide mass ratio be 1:1.5-2, and the iron tailings after alkali soluble reaction presses 1:The solid-to-liquid ratio of 3-7 is 60
It is stirred to react at a temperature of DEG C -90 DEG C, thick silicon solution is obtained by filtration.
The method that the slave iron tailings prepares iron oxide and aerosil pad simultaneously, it is characterised in that step 4)
The middle 2-4mol/L ammonia spirit that is added into thick silicon solution adjusts pH, and after uniformly immersing glass mat, felt pan hardening is solidifying
Glue.
The method that the slave iron tailings prepares iron oxide and aerosil pad simultaneously, it is characterised in that step 5)
In Ageing solution be dehydrated alcohol and ethyl orthosilicate mixed liquor, the volume ratio of dehydrated alcohol and ethyl orthosilicate is 8-12:1.
The method that the slave iron tailings prepares iron oxide and aerosil pad simultaneously, it is characterised in that step 7)
Middle modification liquid is n-hexane and trim,ethylchlorosilane mixed liquor, and the volume ratio of n-hexane and trim,ethylchlorosilane is 8-12:1, it is excellent
It is selected as 10:1.
The method that the slave iron tailings prepares iron oxide and aerosil pad simultaneously, it is characterised in that obtain
The density of aerosil pad is 0.162-0.173g/cm3;The tap density of ferric oxide nano powder is 1.063-
1.141 g/cm3, partial size is less than 50nm.
By using above-mentioned technology, compared with prior art, the present invention is had the advantages that:
1)The present invention uses the solid waste such as iron tailings for raw material, has carried out reasonable utilization to wherein iron, element silicon, has passed through benefit
With the cheap silicon source in iron tailings, hydrophobic silica aerogel pad is prepared;The iron in iron tailings is recycled simultaneously, system
At iron oxide, hydrophobic silica aerogel and iron oxide are used for the comprehensive utilization of next step, to realize a large amount of processing iron tails
The purpose of mine, on the one hand alleviates environmental pressure, reduces environmental pollution, while improving recovery utilization rate, meets green ring
Guaranteed request;
2)The present invention overcomes the spy of its easy fragmentation while maintenance aerosil high heat insulating effect
Its mechanical strength is substantially improved in point;
3)The present invention provides a kind of reactions mildly, the shorter constant pressure and dry method of preparation time, compared with common supercritical drying
Drying method is more conducive to industrialized production;
4)The present invention available ferric oxide powder while aerosil pad is made can be used as painting rubber etc.
Colorant and other industrial uses.
Detailed description of the invention
Fig. 1 is implementation flow chart of the present invention;
Fig. 2 is the SEM figure of aerosil pad made from present example 1;
Fig. 3 is that the Fourier of aerosil pad made from present example 1 is infrared(FTIR)Analysis chart;
Fig. 4 is the SEM figure of ferric oxide powder made from present example 1;
Fig. 5 is the pictorial diagram that aerosil pad is made in present example 1.
Specific embodiment
With specific embodiment, technical scheme is described further below, but protection scope of the present invention is unlimited
In this:
Embodiment 1 prepares ferric oxide powder and aerosil pad
As shown in Figure 1, the embodiment of the present invention 1 prepares the system of ferric oxide powder and aerosil pad using iron tailings as raw material
Preparation Method includes the following steps:
(1)Raw material includes at least North China's iron tailings(SiO245.43%、CaO 13.81%、MgO 13.10%、Al2O3
11.35%、Fe2O310.13%, surplus is impurity), sodium hydroxide, hydrochloric acid, concentrated ammonia liquor, glass mat, n-hexane, trimethyl
Chlorosilane, dehydrated alcohol;
(2)Iron tailings after will be levigate sieves with 100 mesh sieve, and is put into Muffle furnace later and is heated to 850 DEG C, is kept for temperature 4.5 hours,
After being cooled to room temperature and 2mol/L hydrochloric acid by volume 1:1.5 are mixed and stirred for 2 hours, filter to take filter residue is dried, filter
Liquid container collection;
(3)By filter residue and sodium hydroxide in mass ratio 1:1.5 are mixed and stirred for uniformly, being heated to 500 DEG C and being kept for 1.5 hours, taken
It incorporates in water out, by 1:3 solid-to-liquid ratio is stirred to react 24 hours at 60 DEG C, and thick silicon solution is obtained by filtration;
(4)Thick silicon solution is crossed into cation exchange resin, is adjusted to pH=6.5 with 2mol/L ammonia spirit later, in its non-gel
When immerse glass mat, repeatedly extrude glass mat, be evenly distributed to silica solution in glass mat, stand solidifying to it
Glue;
(5)Gel aging:Gel mat obtained is immersed into gel Ageing solution(It is 10 that dehydrated alcohol and ethyl orthosilicate, which press volume,:1
Mixing), aging in 20 hours is stood at room temperature;
(6)Exchange of solvent:Gel mat after aging is immersed into 22 hours progress exchange of solvent in n-hexane, by the water in colloid pad
It cements out;
(7)Surface is modified:Colloid obtained is immersed into modification liquid(N-hexane and trim,ethylchlorosilane by volume 10:1 ratio
Mixing), 12 hours are stood at room temperature, finally by 90 DEG C of gel constant pressure and dry 6 hours obtained, obtains one kind finally with iron tailings
For the hydrophobic silica aerogel pad of raw material preparation, pictorial diagram is as shown in Figure 5;
(8)By step(2)Middle iron content filtrate is adjusted to pH=7 with ammonium hydroxide under ultrasound environments, a large amount of precipitatings occurs, stands 2 hours
After filter, be put into Muffle furnace after filter residue and drying, roasting temperature 1.5 hours of 600 DEG C, finally be made ferric oxide nano powder
Body.And measured performance parameter has been carried out to resulting iron oxide and aerosil pad, it is specific as follows:
1)Airsetting rubber mat scanning electron microscope prepared by embodiment 1(SEM)Analysis
Fig. 2 is morphology of the aerosil pad under electronic scanner microscope.From figure 2 it can be seen that more
The aerosil attachment in hole on the glass fibers, glass fiber is fixed together, silica airsetting is overcome
The soft frangible disadvantage of colloid, belongs to typical composite aerogel structure;
2)Aeroge Fourier prepared by embodiment 1 is infrared(FTIR)Analysis
Fig. 3 is the Fourier transform infrared spectroscopy figure of aerosil.As can be seen from Figure 3:In 1090 cm-1Place is strong
And wide peak is Si-O-Si vibration peak;Prove the tridimensional network that the aerosil is made of Si-O-Si;
3)The scanning electron microscope of ferric oxide powder prepared by embodiment 1(SEM)Analysis
Fig. 4 is morphology of the ferric oxide powder under electronic scanner microscope.It can be seen from the figure that the oxidation of preparation
Iron powder body is corynebacterium particle, and particle diameter distribution is uniform, is less than 50nm, belongs to nano material scope.
Embodiment 2 prepares ferric oxide powder and aerosil pad
The embodiment of the present invention 2 prepares ferric oxide powder and aerosil pad by raw material of iron tailings, includes the following steps:
(1)Raw material includes at least North China's iron tailings, sodium hydroxide, hydrochloric acid, concentrated ammonia liquor, glass fibre, n-hexane, trimethyl
Chlorosilane, dehydrated alcohol;
(2)Iron tailings after will be levigate sieves with 100 mesh sieve, and is put into Muffle furnace later and is heated to 950 DEG C, is kept for temperature 5.5 hours,
After being cooled to room temperature and 2mol/L hydrochloric acid by volume 1:2.1 are mixed and stirred for 4 hours, filter to take filter residue is dried, filter
Liquid container collection;
(3)By filter residue and sodium hydroxide in mass ratio 1:2 are mixed and stirred for uniformly, being heated to 600 DEG C and being kept for 2.5 hours, taken out
It incorporates in water, by 1:7 solid-to-liquid ratio is stirred to react 27 hours at 90 DEG C, and thick silicon solution is obtained by filtration;
(4)Thick silicon solution is crossed into cation exchange resin, is adjusted to pH=7.5 with 2mol/L ammonia spirit later, in its non-gel
When immerse glass mat, repeatedly extrude glass mat, be evenly distributed to silica solution in glass mat, stand solidifying to it
Glue;
(5)Gel aging:Gel mat obtained is immersed into gel Ageing solution(It is 10 that dehydrated alcohol and ethyl orthosilicate, which press volume,:1
Mixing), aging in 26 hours is stood at room temperature;
(6)Exchange of solvent:Gel mat after aging is immersed into 26 hours progress exchange of solvent in n-hexane, by the water in colloid pad
It cements out;
(7)Surface is modified:Colloid obtained is immersed into modification liquid(N-hexane and trim,ethylchlorosilane by volume 10:1 ratio
Mixing), 24 hours are stood at room temperature, finally by 120 DEG C of gel constant pressure and dry 8 hours obtained, obtains one kind finally with iron tail
Mine is the hydrophobic silica aerogel pad of raw material preparation;
(8)By step(2)Middle iron content filtrate is adjusted to pH=8 with ammonium hydroxide under ultrasound environments, a large amount of precipitatings occurs, stands 2 hours
After filter, be put into Muffle furnace after filter residue and drying, roasting temperature 2.5 hours of 700 DEG C, finally be made ferric oxide nano powder
Body.And measured performance parameter, iron oxide and silica nanometer are carried out to resulting iron oxide and aerosil pad
Material property parameter is measured with embodiment 1.
Embodiment 3 prepares ferric oxide powder and aerosil pad
The embodiment of the present invention 3 prepares ferric oxide powder and aerosil pad by raw material of iron tailings, includes the following steps:
(1)Raw material includes at least North China's iron tailings, sodium hydroxide, hydrochloric acid, concentrated ammonia liquor, glass fibre, n-hexane, trimethyl
Chlorosilane, dehydrated alcohol;
(2)Iron tailings after will be levigate sieves with 100 mesh sieve, and is put into Muffle furnace later and is heated to 900 DEG C, is kept for temperature 5 hours, cold
But to after room temperature with 2mol/L hydrochloric acid by volume 1:1.8 are mixed and stirred for 4.5 hours, filter to take filter residue is dried, filter
Liquid container collection;
(3)By filter residue and sodium hydroxide in mass ratio 1:1.7 are mixed and stirred for uniformly, being heated to 550 DEG C and being kept for 2 hours, taken out
It incorporates in water, by 1:5 solid-to-liquid ratio is stirred to react 25 hours at 85 DEG C, and thick silicon solution is obtained by filtration;
(4)Thick silicon solution is crossed into cation exchange resin, pH=7 are adjusted to 2mol/L ammonia spirit later, in its non-gel
Glass mat is immersed, glass mat is repeatedly extruded, is evenly distributed to silica solution in glass mat, is stood solidifying to it
Glue;
(5)Gel aging:Gel mat obtained is immersed into gel Ageing solution(It is 10 that dehydrated alcohol and ethyl orthosilicate, which press volume,:1
Mixing), aging in 25 hours is stood at room temperature;
(6)Exchange of solvent:Gel mat after aging is immersed into 24 hours progress exchange of solvent in n-hexane, by the water in colloid pad
It cements out;
(7)Surface is modified:Colloid obtained is immersed into modification liquid(N-hexane and trim,ethylchlorosilane by volume 10:1 ratio
Mixing), 14 hours are stood at room temperature, finally by 80 DEG C of gel constant pressure and dry 6 hours obtained, obtains one kind finally with iron tailings
For the hydrophobic silica aerogel pad of raw material preparation;
(8)By step(2)Middle iron content filtrate is adjusted to pH=7.5 with ammonium hydroxide under ultrasound environments, a large amount of precipitatings occurs, it is small to stand 2
When after filter, be put into Muffle furnace after filter residue and drying, roasting temperature 2 hours of 650 DEG C, finally be made ferric oxide nano powder
Body.And measured performance parameter, iron oxide and silica nanometer are carried out to resulting iron oxide and aerosil pad
Material property parameter is measured with embodiment 1.
Embodiment 3 prepares ferric oxide powder and aerosil pad
The embodiment of the present invention 3 prepares ferric oxide powder and aerosil pad by raw material of iron tailings, includes the following steps:
(1)Raw material includes at least North China's iron tailings, sodium hydroxide, hydrochloric acid, concentrated ammonia liquor, glass fibre, n-hexane, trimethyl
Chlorosilane, dehydrated alcohol;
(2)Iron tailings after will be levigate sieves with 100 mesh sieve, and is put into Muffle furnace later and is heated to 920 DEG C, is kept for temperature 5 hours, cold
But to after room temperature with 2mol/L hydrochloric acid by volume 1:1.7 are mixed and stirred for 4.5 hours, filter to take filter residue is dried, filter
Liquid container collection;
(3)By filter residue and sodium hydroxide in mass ratio 1:1.5 are mixed and stirred for uniformly, being heated to 520 DEG C and being kept for 2.5 hours, taken
It incorporates in water out, by 1:6 solid-to-liquid ratio is stirred to react 23 hours at 80 DEG C, and thick silicon solution is obtained by filtration;
(4)Thick silicon solution is crossed into cation exchange resin, is adjusted to pH=7.5 with 2mol/L ammonia spirit later, in its non-gel
When immerse glass mat, repeatedly extrude glass mat, be evenly distributed to silica solution in glass mat, stand solidifying to it
Glue;
(5)Gel aging:Gel mat obtained is immersed into gel Ageing solution(It is 10 that dehydrated alcohol and ethyl orthosilicate, which press volume,:1
Mixing), aging in 26 hours is stood at room temperature;
(6)Exchange of solvent:Gel mat after aging is immersed into 22 hours progress exchange of solvent in n-hexane, by the water in colloid pad
It cements out;
(7)Surface is modified:Colloid obtained is immersed into modification liquid(N-hexane and trim,ethylchlorosilane by volume 10:1 ratio
Mixing), 16 hours are stood at room temperature, finally by 90 DEG C of gel constant pressure and dry 7 hours obtained, obtains one kind finally with iron tailings
For the hydrophobic silica aerogel pad of raw material preparation;
(8)By step(2)Middle iron content filtrate is adjusted to pH=7.5 with ammonium hydroxide under ultrasound environments, a large amount of precipitatings occurs, it is small to stand 2
When after filter, be put into Muffle furnace after filter residue and drying, roasting temperature 2 hours of 680 DEG C, finally be made ferric oxide nano powder
Body.And measured performance parameter, iron oxide and silica nanometer are carried out to resulting iron oxide and aerosil pad
Material property parameter is measured with embodiment 1.
Comparative example 1 prepares ferric oxide powder and aerosil pad
Comparative example 1 of the present invention prepares ferric oxide powder and aerosil pad by raw material of iron tailings, includes the following steps:
(1)Raw material includes at least North China's iron tailings, sodium hydroxide, hydrochloric acid, concentrated ammonia liquor, glass fibre, n-hexane, trimethyl
Chlorosilane, dehydrated alcohol;
(2)Iron tailings after will be levigate sieves with 100 mesh sieve, and is put into Muffle furnace later and is heated to 900 DEG C, is kept for temperature 5 hours, often
After temperature is cooling with 2mol/L hydrochloric acid by volume 1:1.5 are mixed and stirred for 2 hours, filter to take filter residue is dried, filtrate use
Container collection;
(3)By filter residue and sodium hydroxide in mass ratio 1:1.5 are mixed and stirred for uniformly, being heated to 500 DEG C and being kept for 1 hour, taken out
It incorporates in water, by 1:3 solid-to-liquid ratio is stirred to react 24 hours at 60 DEG C, and thick silicon solution is obtained by filtration;
(4)Near thick silicon solution is adjusted to neutrality with 2mol/L hydrochloric acid, glass mat is immersed in its non-gel, is squeezed repeatedly
Glass mat is pressed, is evenly distributed to silica solution in glass mat, is stood to its gel;
(5)Gel aging:Gel mat obtained is immersed into gel Ageing solution(It is 10 that dehydrated alcohol and ethyl orthosilicate, which press volume,:1
Mixing), aging in 20 hours is stood at room temperature;
(6)Exchange of solvent:Gel mat after aging is immersed into 20 hours progress exchange of solvent in n-hexane, by the water in colloid pad
It cements out;
(7)Surface is modified:Colloid obtained is immersed into modification liquid(N-hexane and trim,ethylchlorosilane by volume 10:1 ratio
Mixing), 20 hours are stood at room temperature, finally by 70 DEG C of gel constant pressure and dry 6 hours obtained, obtains one kind finally with iron tailings
For the hydrophobic silica aerogel pad of raw material preparation.
Comparative example 2 prepares ferric oxide powder and aerosil pad
Comparative example 2 of the present invention prepares ferric oxide powder and aerosil pad by raw material of iron tailings, includes the following steps:
(1)Raw material includes at least North China's iron tailings, sodium hydroxide, hydrochloric acid, concentrated ammonia liquor, glass fibre, n-hexane, trimethyl
Chlorosilane, dehydrated alcohol;
(2)Iron tailings after will be levigate sieves with 100 mesh sieve, and is put into Muffle furnace later and is heated to 900 DEG C, is kept for temperature 5 hours, often
After temperature is cooling with 2mol/L hydrochloric acid by volume 1:2.1 are mixed and stirred for 4 hours, filter to take filter residue is dried, filtrate use
Container collection;
(3)By filter residue and sodium hydroxide in mass ratio 1:2 are mixed and stirred for uniformly, being heated to 500 DEG C and being kept for 3 hours, taking-up is melted
Enter in water, by 1:7 solid-to-liquid ratio is stirred to react 28 hours at 90 DEG C, and thick silicon solution is obtained by filtration;
(4)Thick silicon solution is crossed into cation exchange resin, be adjusted to neutrality later with 2mol/L ammonia spirit near, do not coagulate at it
Glass mat is immersed when glue, repeatedly extrudes glass mat, is evenly distributed to silica solution in glass mat, is stood to it
Gel;
(5)Gel aging:Gel mat obtained is immersed into gel Ageing solution(It is 10 that dehydrated alcohol and ethyl orthosilicate, which press volume,:1
Mixing), aging in 26 hours is stood at room temperature;
(6)Surface is modified:Colloid obtained is immersed into modification liquid(N-hexane and trim,ethylchlorosilane by volume 10:1 ratio
Mixing), 24 hours are stood at room temperature, finally by 80 DEG C of gel constant pressure and dry 8 hours obtained, obtains one kind finally with iron tailings
For the hydrophobic silica aerogel pad of raw material preparation.
By two above comparative example, comparative example 1 is in step(4)In to thick silicon solution carry out cation exchange behaviour
Make, pH is directly adjusted to neutrality to gel, compared with original method, the aerosil pad finally prepared feels like jelly, glass fibers
It ties up exposed, there is no to form gel during the preparation process;Comparative example 2 is in step(5)Solvent friendship is not carried out after gel aging
Operation is changed, keeps aerosil pad mechanical strength obtained not high, being primarily due to water has very big surface tension, two
By duct be collapsed when silica wet gel is dry, cause not form aerosil pad.
By above embodiments and comparative example it is found that the present invention provides one kind to prepare iron oxide by raw material of iron tailings simultaneously
The method of powder and aerosil pad, including:The elements such as the iron, silicon, aluminium being rich in iron tailings are recycled;It obtains
A kind of cheap silicon source preparing aerosil pad;Carrying out a series of aging, exchange of solvent, surface modification
Afterwards, aerosil pad obtained is enable to be dried under normal pressure;Ferric oxide powder obtained is also in coating, building
Equal fields extensive application.The preparation condition of ferric oxide powder and aerosil pad provided by the invention is mild, system
The standby period is short, largely handles solid waste, is easy to industrialize.
The foregoing is merely section Examples of the invention, are not intended to limit the invention.In every case according to the content of present invention institute
The equivalent changes and modifications done, all for protection scope of the present invention within.
Claims (8)
1. a kind of method for preparing iron oxide and aerosil pad simultaneously from iron tailings, it is characterised in that including following step
Suddenly:
1)Iron tailings is ground and is sieved with 100 mesh sieve, obtain it is levigate after iron tailings;
2)By step 1)It is levigate after iron tailings be put into Muffle furnace and be heated to 850-950 DEG C and activated, keep the temperature 4.5-5.5
Hour, it is made the iron tailings powder after activation after being cooled to room temperature, iron tailings powder after activation and mixed in hydrochloric acid are simultaneously stirred to react, instead
It is filtered after answering, filter residue is dried, filtrate container collection;
3)By step 2)Filter residue and sodium hydrate particle after middle drying are mixed and stirred for uniformly, 500-600 DEG C in Muffle furnace
It is kept for 1.5-2.5 hours, will obtain carrying out heating reaction in the iron tailings involvement water after alkali fusion reacts, and filter after reaction
Thick silicon solution;
4)By step 3)In thick silicon solution obtained cross cation exchange resin, then being adjusted to pH value with ammonia spirit is 6.5-
7.5, glass mat is immersed in its non-gel, glass mat is repeatedly extruded, silica solution is made to be evenly distributed to glass fibers
It ties up in felt, obtains gel mat after standing gel;
5)Gel aging:In step 4)In gel Ageing solution is added in gel mat obtained, stand aging at room temperature, obtain aging
Gel mat afterwards;
6)Exchange of solvent:By step 5)Gel mat after middle aging, which immerses 22-26 hours in n-hexane, replaces the water in gel
Out, colloid is obtained;
7)Surface is modified:By step 6)In colloid obtained immerse modification liquid, stand 12-24 hours at room temperature, will finally be made
90-120 DEG C of gel constant pressure and dry 6-8 hours, be able to iron tailings be raw material preparation hydrophobic silica aerogel pad;
8)By step 2)In filtrate to adjust pH with ammonium hydroxide under ultrasound environments be 7-8, there are a large amount of precipitatings, filtered after standing,
It is put into Muffle furnace after filter residue and drying, roasting temperature 1.5-2.5 hours of 600 DEG C -700 DEG C, iron oxide is finally made and receives
Rice flour body.
2. the method according to claim 1 for preparing iron oxide and aerosil pad simultaneously from iron tailings, special
Sign is step 1)In the ingredient of iron tailings include SiO2、CaO、MgO、Al2O3、Fe2O3。
3. the method according to claim 1 for preparing iron oxide and aerosil pad simultaneously from iron tailings, special
Sign is step 2)In concentration of hydrochloric acid be 1-3mol/L, preferably 2mol/L, activation mine tailing and hydrochloric acid volume ratio be 1:
1.5-2.1 preferably 1.6-1.8.
4. the method according to claim 1 for preparing iron oxide and aerosil pad simultaneously from iron tailings, special
Sign is step 3)In filter residue and sodium hydroxide mass ratio be 1:1.5-2, and the iron tailings after alkali soluble reaction presses 1:3-7
Solid-to-liquid ratio be stirred to react at a temperature of 60 DEG C -90 DEG C, thick silicon solution is obtained by filtration.
5. the method according to claim 1 for preparing iron oxide and aerosil pad simultaneously from iron tailings, special
Sign is step 4)The middle 2-4mol/L ammonia spirit that is added into thick silicon solution adjusts pH, after uniformly immersing glass mat, felt
Pad hardening is gel.
6. the method according to claim 1 for preparing iron oxide and aerosil pad simultaneously from iron tailings, special
Sign is step 5)In Ageing solution be dehydrated alcohol and ethyl orthosilicate mixed liquor, the volume of dehydrated alcohol and ethyl orthosilicate
Than for 8-12:1.
7. the method according to claim 1 for preparing iron oxide and aerosil pad simultaneously from iron tailings, special
Sign is step 7)Middle modification liquid is n-hexane and trim,ethylchlorosilane mixed liquor, the volume ratio of n-hexane and trim,ethylchlorosilane
For 8-12:1, preferably 10:1.
8. the method according to claim 1 for preparing iron oxide and aerosil pad simultaneously from iron tailings, special
The density for levying the aerosil pad being is 0.162-0.173g/cm3;The tap density of ferric oxide nano powder
For 1.063-1.141 g/cm3, partial size is less than 50nm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810790735.7A CN108911599B (en) | 2018-07-18 | 2018-07-18 | Method for simultaneously preparing iron oxide and silicon dioxide aerogel pad from iron tailings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810790735.7A CN108911599B (en) | 2018-07-18 | 2018-07-18 | Method for simultaneously preparing iron oxide and silicon dioxide aerogel pad from iron tailings |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108911599A true CN108911599A (en) | 2018-11-30 |
CN108911599B CN108911599B (en) | 2020-10-09 |
Family
ID=64414799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810790735.7A Active CN108911599B (en) | 2018-07-18 | 2018-07-18 | Method for simultaneously preparing iron oxide and silicon dioxide aerogel pad from iron tailings |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108911599B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109503116A (en) * | 2018-12-17 | 2019-03-22 | 山东鲁阳节能材料股份有限公司 | A kind of preparation method of aeroge compound insulating material |
CN111534683A (en) * | 2020-04-13 | 2020-08-14 | 广东工业大学 | Method for enriching iron oxide in iron tailings by using alkali fusion method |
CN112661193A (en) * | 2020-12-18 | 2021-04-16 | 河北工业大学 | Method for simultaneously preparing binary and ternary high-performance composite aerogel by using iron tailings |
CN113817228A (en) * | 2021-09-28 | 2021-12-21 | 长春工业大学 | Modification method of iron-removing tailing slag |
CN115709998A (en) * | 2022-11-14 | 2023-02-24 | 国能龙源环保有限公司 | Method for preparing white carbon black by roasting waste wind power blades |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101164879A (en) * | 2007-09-26 | 2008-04-23 | 东北大学 | Method for producing white carbon black using by iron tailings |
CN101555551A (en) * | 2009-05-22 | 2009-10-14 | 昆明理工大学 | Method for comprehensively recovering Fe, Cu and Si from copper smelting slag |
CN105297943A (en) * | 2014-07-29 | 2016-02-03 | 金承黎 | Load-bearing heat-insulating decorating integrated assembled wall composited with aerogel and manufacturing method |
CN106710773A (en) * | 2016-12-12 | 2017-05-24 | 北京大学深圳研究生院 | Monodisperse magnetic porous silicon dioxide pellet and preparing method thereof |
ES2643503T3 (en) * | 2013-05-17 | 2017-11-23 | BLüCHER GMBH | Procedure and installation to obtain roasted pyrite iron |
-
2018
- 2018-07-18 CN CN201810790735.7A patent/CN108911599B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101164879A (en) * | 2007-09-26 | 2008-04-23 | 东北大学 | Method for producing white carbon black using by iron tailings |
CN101555551A (en) * | 2009-05-22 | 2009-10-14 | 昆明理工大学 | Method for comprehensively recovering Fe, Cu and Si from copper smelting slag |
ES2643503T3 (en) * | 2013-05-17 | 2017-11-23 | BLüCHER GMBH | Procedure and installation to obtain roasted pyrite iron |
CN105297943A (en) * | 2014-07-29 | 2016-02-03 | 金承黎 | Load-bearing heat-insulating decorating integrated assembled wall composited with aerogel and manufacturing method |
CN106710773A (en) * | 2016-12-12 | 2017-05-24 | 北京大学深圳研究生院 | Monodisperse magnetic porous silicon dioxide pellet and preparing method thereof |
Non-Patent Citations (1)
Title |
---|
杨凤玲等: "《化工环保》", 15 June 2011 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109503116A (en) * | 2018-12-17 | 2019-03-22 | 山东鲁阳节能材料股份有限公司 | A kind of preparation method of aeroge compound insulating material |
CN111534683A (en) * | 2020-04-13 | 2020-08-14 | 广东工业大学 | Method for enriching iron oxide in iron tailings by using alkali fusion method |
CN112661193A (en) * | 2020-12-18 | 2021-04-16 | 河北工业大学 | Method for simultaneously preparing binary and ternary high-performance composite aerogel by using iron tailings |
CN112661193B (en) * | 2020-12-18 | 2022-07-19 | 河北工业大学 | Method for simultaneously preparing binary and ternary high-performance composite aerogel by using iron tailings |
CN113817228A (en) * | 2021-09-28 | 2021-12-21 | 长春工业大学 | Modification method of iron-removing tailing slag |
CN115709998A (en) * | 2022-11-14 | 2023-02-24 | 国能龙源环保有限公司 | Method for preparing white carbon black by roasting waste wind power blades |
CN115709998B (en) * | 2022-11-14 | 2023-03-31 | 国能龙源环保有限公司 | Method for preparing white carbon black by roasting waste wind power blades |
Also Published As
Publication number | Publication date |
---|---|
CN108911599B (en) | 2020-10-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108911599A (en) | A method of iron oxide and aerosil pad are prepared simultaneously from iron tailings | |
CN108658572B (en) | Preparation method of anti-falling powder aerogel composite heat-preservation felt | |
CN109133072B (en) | Method for preparing hydrophobic silica aerogel by using iron tailings as raw materials at ultra-fast speed | |
CN105314999A (en) | Nano porous high-temperature-insulating material taking thixotropic colloid as template agent and preparation method for high-temperature-insulating material | |
CN108658130B (en) | Method for simultaneously preparing iron oxide and silicon dioxide aerogel from iron tailings | |
CN109020378A (en) | A kind of expanded perlite aeroge composite insulation boards and preparation method thereof prepared using iron tailings as raw material | |
CN106925239A (en) | A kind of novel drier and preparation method thereof | |
CN108117312A (en) | A kind of decoration acoustic absorption and preparation method thereof | |
CN108083672A (en) | A kind of water glass curing agent and preparation method and application | |
CN106747162A (en) | A kind of diatom plate and its production technology with photo-catalysis function | |
CN108658564A (en) | A kind of external wall compound insulating material and its preparation process | |
CN109021524A (en) | A kind of novel environment friendly ceiling tile materials and preparation method thereof | |
CN102898053A (en) | Modified adhesive and preparation method for alumina silicate fiber paperboard | |
CN103146290B (en) | Preparation method for aqueous composite thermal insulation coating | |
CN108929072A (en) | A method of iron oxide and nano combined heat-insulating heat-preserving material are prepared from iron tailings | |
CN110204267A (en) | A kind of technique preparing cracking-resistant cement mortar using plant fiber | |
CN108947580A (en) | A kind of exfoliated vermiculite raw powder's production technology | |
CN108947469A (en) | A method of the compound mine tailings heat-insulating heat-preserving material of silica is prepared from iron tailings | |
CN107936639A (en) | It is a kind of that there is heat-insulated and environmental protection coating material of antibacterial functions and preparation method thereof | |
CN108484214A (en) | Preparation method of energy-saving wall material | |
CN112142414A (en) | Preparation method of adhesive polystyrene particle thermal insulation mortar | |
CN107337389A (en) | A kind of environmentally friendly indoor building material and preparation method thereof | |
CN104261409A (en) | Method for preparing silicon carbide powder serving as organic composite material reinforcement | |
CN108341682A (en) | A kind of heat-insulating heat-preserving material and preparation method thereof | |
CN109232015A (en) | A kind of architectural pottery and preparation method thereof of cupric tailings particles |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |