CN108947486A - The method for preparing photocatalysis porous brick using high-titanium blast furnace slag - Google Patents
The method for preparing photocatalysis porous brick using high-titanium blast furnace slag Download PDFInfo
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- CN108947486A CN108947486A CN201810987225.9A CN201810987225A CN108947486A CN 108947486 A CN108947486 A CN 108947486A CN 201810987225 A CN201810987225 A CN 201810987225A CN 108947486 A CN108947486 A CN 108947486A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
The present invention relates to water-permeable brick production method fields, especially a kind of effective recycling high-titanium blast furnace slag, and efficiently realize that the method for preparing photocatalysis porous brick using high-titanium blast furnace slag of photocatalysis porous brick production includes the following steps: a, firstly, high-titanium blast furnace slag is crushed, is sieved；B, the high-titanium blast furnace slag after broken classification is activated, obtains aggregate；C, it after auxiliary binder, cosolvent and water being added in aggregate, is placed in ball milling and carries out powder processed, to obtain blank；D, blank obtained in step c is subjected to ripening, and once extrusion forming obtains raw adobe；E, raw adobe obtained in step d is sintered, the water-permeable brick of finished product is obtained after then being cooled to room temperature.The present invention takes full advantage of high-titanium blast furnace slag, to prevent the harm caused by environment of the bulk deposition of slag charge, present invention is particularly suitable for produced among photocatalysis porous brick using high-titanium blast furnace slag.
Description
Technical field
The present invention relates to water-permeable brick production method field, especially a kind of utilization high-titanium blast furnace slag prepares photocatalysis porous
The method of brick.
Background technique
With the fast development in China, the propulsion of Modernized City Construction, city largely uses concrete, pitch, stone material
Equal impermeable materials, city hardened ground occupy entire urban area area considerable proportion and the contour consumption combustion equipment of automobile
A large amount of to increase, ground can not carry out heat absorption to a large amount of thermal energy, and heat is made to be stuck in urban inner and form tropical island effect.
In addition in recent years, global climate is severe, and the multiple cities in China are after meeting with precipitation or continuous precipitation, in the appearance of city
Flood, and the appearance of tropical island effect, the probability for causing heavy rain to occur increase, and precipitation is concentrated.
To solve this circumstances, long-range, sustainable development improvement of the ecological environment that people have more turned one's attention to
In the middle." sponge-type city " concept enters the visual field of people, and " sponge-type city " is brought to environmental change and reply rainwater is adapted to
Natural calamity etc. there is good elasticity, and water-permeable brick is exactly a part in " sponge-type city " construction.
Southwestern China Panxi Diqu contains vanadium titano-magnetite extremely abundant, and the reserves verified are more than 10,000,000,000 tons, possess
About 3,400,000,000 tons of reserves, be the domestic important iron ore deposit for being only second to Anshan iron and steel plant area.The blast furnace slag for wherein climbing steel is a kind of CaO-
SiO2—MgO—Al2O3—TiO2Five yuan of clinkers, TiO in slag2Mass fraction about 21% or so is that a kind of typical high titania type is high
Clinker.For a long time, solid waste of the high-titanium blast furnace slag as blast furnace process, office of the use value by its subsequent product
Limit, fails to utilize on a large scale always, leads to clinker bulk deposition, and slag tip occupies a large amount of soils, not only polluted environment but also caused huge
Big economic loss.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of effective recycling high-titanium blast furnace slags, and efficient real
The method for preparing photocatalysis porous brick using high-titanium blast furnace slag of existing photocatalysis porous brick production.
The technical solution adopted by the present invention to solve the technical problems is: being prepared using high-titanium blast furnace slag photocatalysis porous
The method of brick, includes the following steps:
A, firstly, high-titanium blast furnace slag is crushed, is sieved；
B, the high-titanium blast furnace slag after broken classification is activated, obtains aggregate；
C, it after auxiliary binder, cosolvent and water being added in aggregate, is placed in ball milling and carries out powder processed, to obtain base
Material；
D, blank obtained in step c is subjected to ripening, then fills out cloth into the metal die of press, and once added
It is molded to obtain raw adobe；
E, raw adobe obtained in step d is sintered, the water-permeable brick of finished product is obtained after then being cooled to room temperature.
Further, the particle size range of the powder obtained after ball milling processing is 0.60mm~2.00mm in step c.
Further, the water-permeable brick is divided into the permeable surface layer on upper layer and the permeable lower layer of lower layer, wherein in step d,
The permeable surface layer on upper layer uses the blank of 20~30 mesh, and lower layer uses the blank of 10~20 mesh, and upper layer and lower layer pass through high temperature sintering
It is whole to form water-permeable brick.
Further, the permeable surface layer and permeable lower layer are bonded by the high-titanium blast furnace slag after activated, auxiliary
Agent, cosolvent and water are mixed with, wherein the auxiliary binder is methylcellulose.
Further, in step b, be activated are as follows: by the high-titanium blast furnace slag after broken classification be placed in 400kw~
In the microwave radiation field of 700kw, reaction time range is 0.1~1.0h.
Further, the grain class distribution after the broken classification of the high-titanium blast furnace slag are as follows: the range of 10~20 mesh is
30%~60%, the range of 20~30 mesh is 40%~70%.
Further, in step c, aggregate: auxiliary binder: the proportional region of cosolvent be 90~98:1~10:1~
10。
Further, aging is vacuum warehouse spice mode in step d, spice time range is 1~3h.
Further, the sintering processing in step e are as follows: the raw adobe is placed in roller kilns, 1100 DEG C~
At a temperature of 1190 DEG C, soaking time range is 5~7h.
The beneficial effects of the present invention are: raw material uses titanium-containing blast furnace slag, on the basis of effectively realizing that solid waste utilizes, also have
Have following technical advantage: one, the usage amount accounting of the high-titanium blast furnace slag in the present invention has reached 90~98%, makes full use of
High-titanium blast furnace slag, to prevent the harm caused by environment of the bulk deposition of slag charge.In addition, the present invention can also realize
The aggregate structure of " upper layer partial size < lower layer partial size ", so as to ensure that water-permeable brick on the basis of with good water penetration, also has
There is good water-retaining property, due to distributing using reasonable partial size, can greatly slow down the clogging of water-permeable brick；Two, due to high titanium
Type blast furnace slag itself contains vanadium, can make the TiO in clinker2There is broader absorption band；The presence of iron ion makes TiO2Photocatalysis it is living
Property enhances, and other substances, substantially will not be to the photocatalysis of TiO2 due to closed shell electron configuration in blast furnace slag
It has an impact；Three, high-titanium blast furnace slag after being crushed according to heat between material by that, by microwave activation, ball milling dusting, can answer
The difference of power to have the function that increase material specific surface area, promote surface tension, then forms TiO by high temperature sintering2's
Photocatalysis membrana is carried on these materials with high specific surface area, increases photocatalysis membrana and degradation product contact area, is increased
Big light-catalysed activity.By the water-permeable brick that the present invention obtains, there is water-permeable brick photocatalysis characteristic, effectively reduce material
And production cost, the water-permeable brick functional diversities produced meet the demand in " sponge city " well.The present invention is especially
Suitable for being produced among photocatalysis porous brick using high-titanium blast furnace slag.
Detailed description of the invention
Fig. 1 is the structure diagram of water-permeable brick of the invention.
In the figure, it is marked as permeable surface layer 1, permeable lower layer 2.
Specific embodiment
The following further describes the present invention with reference to the drawings.
The method for preparing photocatalysis porous brick using high-titanium blast furnace slag includes the following steps: a, firstly, by high titania type height
Clinker is crushed, is sieved；B, the high-titanium blast furnace slag after broken classification is activated, obtains aggregate；C, in aggregate
After middle addition auxiliary binder, cosolvent and water, it is placed in ball milling and carries out powder processed, to obtain blank；D, it will be obtained in step c
Blank carry out ripening, then fill out cloth into the metal die of press, and once extrusion forming obtains raw adobe；It e, will step
Raw adobe obtained in rapid d is sintered, and the water-permeable brick of finished product is obtained after then being cooled to room temperature.
Currently, being a kind of CaO-SiO to climb steel as the blast furnace slag of representative2—MgO—Al2O3—TiO2Five yuan of clinkers, slag
Middle TiO2Mass fraction about 21% or so is a kind of typical high-titanium blast furnace slag.For a long time, high-titanium blast furnace slag is as high
The solid waste that furnace is smelted, use value are failed to utilize on a large scale always, cause clinker a large amount of by the limitation of its subsequent product
Accumulation, slag tip occupy a large amount of soils, had not only polluted environment but also caused huge economic losses.At the same time, on photocatalysis technology is
One kind of century 70 discovery is efficient, cleans, thorough pollutant process technology, the more nano-TiO studied at present2It can
It is H by the degradations degraded that are difficult to some in water body under the conditions of light radiation2O and CO2, therefore nanocrystalline TiO2Photocatalysis
Edman degradation Edman is a kind of water process new technology of great application prospect.But nanocrystalline TiO2Load matrix selection and preparation always
It is to hinder TiO2The bottleneck that photocatalysis method is promoted the use of.Due to TiO2Photocatalysis membrana carry out degradation reaction premise be need by
Contaminant molecule in surrounding medium is largely captured, this just needs photocatalysis membrana and sewage to have biggish contact surface
Product, with the proviso that load basis material specific surface area with higher.The present invention very cleverly has found the knot of above-mentioned technology
Chalaza, the creative preparation method for devising photocatalysis porous brick of the invention are finally realizing that effective use high titania type is high
While clinker, and efficiently realize the production of photocatalysis porous brick.High temperature sintering in the present invention forms TiO2Light urge
Change film, is carried on these materials with high specific surface area, increases photocatalysis membrana and degradation product contact area, increase
Light-catalysed activity.By the obtained water-permeable brick of the present invention, there is water-permeable brick photocatalysis characteristic, effectively reduce material and
Production cost, the water-permeable brick functional diversities produced meet the demand in " sponge city ", market promotion prospect ten well
It is clearly demarcated bright.
In order to further optimize the product quality being prepared, have following prioritization scheme: in step c, ball milling adds
The particle size range of the powder obtained after work is preferably 0.60mm~2.00mm.It, can be with by the preferred of the particle size range to powder
The water penetration of water-permeable brick and water-retaining property is allowed to realize perfect balance, thus preferably suitable for the construction in " sponge city ".Base
In same design, also can choose following scheme: the water-permeable brick is divided into the permeable surface layer 1 on upper layer and the permeable lower layer of lower layer
2, wherein in step d, using the blank of 20~30 mesh, lower layer uses the blank of 10~20 mesh for the permeable surface layer 1 on upper layer, and upper and lower two
Layer forms water-permeable brick entirety by high temperature sintering.The structure that such scheme can also optimize the upper and lower level of final water-permeable brick is closed
System guarantees water penetration and water-retaining property.Additionally, it is preferred that the grain class distribution after the broken classification of the high-titanium blast furnace slag are as follows: 10~20
Purpose range is 30%~60%, and the range of 20~30 mesh is 40%~70%, or in step c, aggregate: auxiliary is bonded
Agent: the proportional region of cosolvent is selected as 90~98:1~10:1~10, can also advanced optimize product quality.
In actual production, in order to realize optimal product quality, the permeable surface layer 1 and permeable lower layer 2 can choose
It is mixed with by high-titanium blast furnace slag, auxiliary binder, cosolvent and the water after activated, wherein the auxiliary
Adhesive is methylcellulose.Methylcellulose has the function of ideal adhesive, and easily controllable on production cost,
Among large batch of production.
For the activation processing of high-titanium blast furnace slag, the preferably described activation processing are as follows: by the high titania type after broken classification
Blast furnace slag is placed in the microwave radiation field of 400kw~700kw, and reaction time range is 0.1~1.0h.With regard to high-titanium blast furnace slag
For aging, aging is preferably vacuum warehouse spice mode, and spice time range is 1~3h.Ageing therein, refer to by
A period of time is placed or stood to blank, carries out the processing of next step after allowing blank to realize the reaction of material again.
Sintering processing in actual sintered, in preferred steps e are as follows: the raw adobe is placed in roller kilns, 1100
DEG C~1190 DEG C at a temperature of, soaking time range be 5~7h.To improve production efficiency under the premise of guaranteeing product quality.
The present invention combines the fields such as industrial resources recycling and reusing, " sponge city " and photocatalysis technology well,
The high-titanium blast furnace slag originally as the solid waste of blast furnace process is cleverly converted in very great demand saturating of existing market
Water brick product, meanwhile, the permeable brick product due also to high-titanium blast furnace slag and be provided with TiO2The discomposing effect of photocatalysis membrana, again
There is more preferably technological value than common water-permeable brick, there is very wide market promotion prospect.
Claims (9)
1. the method for preparing photocatalysis porous brick using high-titanium blast furnace slag, which comprises the steps of:
A, firstly, high-titanium blast furnace slag is crushed, is sieved；
B, the high-titanium blast furnace slag after broken classification is activated, obtains aggregate；
C, it after auxiliary binder, cosolvent and water being added in aggregate, is placed in ball milling and carries out powder processed, to obtain blank；
D, blank obtained in step c is subjected to ripening, then fills out cloth and is pressurizeed into the metal die of press, and once
Type obtains raw adobe；
E, raw adobe obtained in step d is sintered, the water-permeable brick of finished product is obtained after then being cooled to room temperature.
2. the method for preparing photocatalysis porous brick using high-titanium blast furnace slag as described in claim 1, it is characterised in that: step
In c, the particle size range of the powder obtained after ball milling processing is 0.60mm~2.00mm.
3. the method for preparing photocatalysis porous brick using high-titanium blast furnace slag as described in claim 1, it is characterised in that: described
Water-permeable brick is divided into the permeable surface layer (1) on upper layer and the permeable lower layer (2) of lower layer, wherein in step d, the permeable surface layer (1) on upper layer
Using the blank of 20~30 mesh, lower layer uses the blank of 10~20 mesh, and upper layer and lower layer form water-permeable brick entirety by high temperature sintering.
4. the method for preparing photocatalysis porous brick using high-titanium blast furnace slag as claimed in claim 3, it is characterised in that: described
Permeable surface layer (1) and permeable lower layer (2) are mixed by high-titanium blast furnace slag, auxiliary binder, cosolvent and the water after activated
Conjunction is prepared, wherein the auxiliary binder is methylcellulose.
5. the method for preparing photocatalysis porous brick using high-titanium blast furnace slag as described in claim 1, it is characterised in that: step
It in b, is activated are as follows: the high-titanium blast furnace slag after broken classification is placed in the microwave radiation field of 400kw~700kw, is reacted
Time range is 0.1~1.0h.
6. the method for preparing photocatalysis porous brick using high-titanium blast furnace slag as described in claim 1, it is characterised in that: described
Grain class distribution after the broken classification of high-titanium blast furnace slag are as follows: the range of 10~20 mesh is 30%~60%, the range of 20~30 mesh
It is 40%~70%.
7. the method for preparing photocatalysis porous brick using high-titanium blast furnace slag as described in claim 1, it is characterised in that: step
In c, aggregate: auxiliary binder: the proportional region of cosolvent is 90~98:1~10:1~10.
8. the method for preparing photocatalysis porous brick using high-titanium blast furnace slag as described in claim 1, it is characterised in that: step
Aging is vacuum warehouse spice mode in d, and spice time range is 1~3h.
9. the method for preparing photocatalysis porous brick using high-titanium blast furnace slag as described in claim 1, it is characterised in that: step
Sintering processing in e are as follows: the raw adobe is placed in roller kilns, 1100 DEG C~1190 DEG C at a temperature of, soaking time model
It encloses for 5~7h.
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Cited By (3)
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| CN111635245A (en) * | 2020-06-25 | 2020-09-08 | 张家港宏昌钢板有限公司 | Method for preparing water permeable brick by using waste castable |
| CN115124366A (en) * | 2022-06-18 | 2022-09-30 | 莫特普迩新材料研究(上海)有限公司 | Brick that permeates water of abandonment sand preparation |
| CN116371881A (en) * | 2023-04-07 | 2023-07-04 | 四川君和环保股份有限公司 | Activation method of blast furnace slag, activated blast furnace slag and application thereof |
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Application publication date: 20181207 |