CN106587962A - Diatomite-based ceramsite and preparation method thereof - Google Patents
Diatomite-based ceramsite and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a diatomite-based ceramsite and a preparation method thereof, and belongs to the field of ceramic materials. Raw materials used in the preparation method of the diatomite-based ceramsite comprise a solid raw material and an additive, wherein the solid raw material comprises, by mass, 50-60% of low grade diatomite, 15-20% of dolomite, 5-10% of glass powder and 10-20% of borax, the additive is a sodium silicate solution with the concentration of 13% or 26%, and the use amount of the sodium silicate is 8% of the total weight of the solid raw material. Compared with the prior art, the method disclosed in the invention has the advantages of sintering temperature reduction and small particle size. The method reduces the sintering temperature under the increasing short circumference of energy, so energy is saved, the produced ceramsite is environmentally-friendly, and the application range of the ceramsite is enlarged.
Description
Technical field
The present invention relates to a kind of diatom soil matrix haydite and preparation method thereof, belongs to ceramic material field.
Background technology
Haydite was developed in 1918 by Hyade, and used as a kind of Novel filter material, haydite has so that unit weight is little, surface area
Greatly, the features such as porosity height, good mechanical strength, high adsorption capacity.In sintering process, there is chemical reaction release gas in raw material
Body, produces pore or expansion, and spherical or spherical silicate product that is light porous, having some strength is formed after cooling.Diatom
Soil is a kind of biogenic silicastone, and main chemical composition is SiO2, mineralogical composition is mainly opal and its change
Plant and part of clay composition.Diatomite bonding clay, cullet and portions additive are being sintered at different temperature, can
The ceramic product of prepared different performance.According to the characteristic that haydite has, different catalysis materials can be loaded on haydite and is reached
Different action effects.For example：Haydite can be used as biofilter material, and nano titanium oxide has sterilized under ultraviolet irradiation and divides
Effect of solution organic matter, the load nano-titanium dioxide on haydite, the organic matter that can effectively degrade in sewage.Haydite can be long-term
Use, disinfectant consumption can be greatly reduced.
The A of CN 104311128 disclose a kind of porous type adsorptivity haydite and preparation method thereof, haydite component and weight portion
For：65～80 parts of municipal sludge, 1～3 part of chalina, 10～20 parts of clinker, 10～20 parts of flyash, Jing Feedstock treatings,
Dispensing, granulation, pyrogenation and carbonization, roasting technique process, prepare haydite.Sintering final temperature reaches 1100-1250 DEG C, is produced
Product physical index is：Grain diameter is in 7～15mm, 1350～1790Kg/m of apparent density3, 15.7～19.5MPa of cylindrical compress strength,
Water absorption rate 35.6～42%.
CN 102806064 discloses a kind of preparation method of colorful porous diatomite haydite.The group of each material of the haydite
Mass fraction is divided to be respectively：Diatomite 50～55%, glass dust 10～14%, clay 3%, sodium carbonate 1%, water 28～32%,
Sodium carbonate liquor 0 or 5%, liquor ferri trichloridi 0 or 3%, copper-bath 0 or 2%, manufacturing process is：Use Chinese medicinal pills preparing machine
The spheric granules of a diameter of 3-8mm is prepared, using the light-wave cooker illumination 5min of 800w after being dried, and is ceaselessly stirred, so that it may
To colorful Diatomite Ceramsite.The haydite finally prepared has redness, white, dark brown and a sapphirine, and porosity 75.8～
77.3%, before and after carried titanium dioxide, the 48h clearances of formaldehyde, benzene and ammonia are respectively 90%, 82%, 95% and 98%,
96%th, 98%.
CN 103880397 discloses a kind of diatomite ceramics and preparation method thereof.Raw material weight proportioning of soup processed is：Diatomite 38
～53%, kaolin 30～42%, aluminum oxide 2～4%, boron glass 1～2%, chromium oxide 1～4%, feldspar 7～12%, phosphorus stone
Cream 2～4%, pyrophillite 0～3%, silicon powder 0～1%, citrate 0～2%.In sintering process, sintering temperature be 760～
830 DEG C, temperature of glaze firing is 1260～1300 DEG C, is incubated 2h.Finished product is obtained after cooling down with the time.Product is put into into just finishing
Complete room is tested, and after 15 days, the concentration of free formaldehyde, benzene, ammonia and TVOC is by respectively by 0.17mg/m3、0.10mg/m3、
0.24mg/m3、0.60mg/m3It is reduced to 0.10mg/m3、0.07mg/m3、0.20mg/m3、0.49mg/m3。
It is disclosed publish thesis or patent in haydite manufacturing process in adopt mostly more than 1000 DEG C of high temperature burning
Knot, diatomite at high temperature, causes microcellular structure melting to cave in, so as to lose diatomaceous porosity characteristic.
The content of the invention
To solve above-mentioned technical problem, the present invention provides a kind of preparation method of diatom soil matrix haydite.
A kind of preparation method of diatom soil matrix haydite, methods described is raw materials used to be made up of solid material and additive, its
In,
The solid material by mass percentage, is made up of following components：
Low grade diatomite 50～60%
Dolomite 15～20%
Glass dust 5～10%
Borax 10～20%,
The additive is the sodium silicate solution that concentration is 13% or 26%, and the consumption of the sodium silicate solution is that solid is former
The 8% of material gross weight.
The preferred methods described of preparation method of diatom soil matrix haydite of the present invention includes following processing steps：
A. get the raw materials ready, low grade diatomite, dolomite and cullet are pre-processed, then low grade diatomite and white clouds
Stone crosses respectively 100 mesh sieves, and glass dust crosses 140 mesh sieves, takes above-mentioned each material screen blanking, then weighs raw material by proportioning；
B. comprehensive ball milling, ball-milling treatment is carried out using the order of wet-milling-drying-dry grinding by compound；
C. granulate, the uniform drawout in pallet of the material after dry grinding, spray concentration is 13% or 26% sodium metasilicate water
The water smoke of solution, prepares spheric granules, sieves, and selects granularity to be the spheric granules between 40～60 mesh；
D. ripening, the spheric granules after sieving is sealed in freshness protection package, is aged 12h naturally at room temperature；；
E. sinter, from room temperature to 300 DEG C, with the ramp of 5 DEG C/min, at 300 DEG C 30min is incubated, then with 4 DEG C/min
Ramp to 650～750 DEG C, be incubated 1～2h.
In above-mentioned technical proposal, step b carries out ball milling using high alumina ball grinder and zirconia ball；Will be solid during wet-milling
Body raw material is put in ball grinder, adds the water of 10 times of solid material gross masses, the turning with 250r/min on planetary ball mill
Fast wet-milling 30min；Compound is poured into pallet after wet-milling and in drying in oven, at 100 DEG C 12h is dried；By powder after drying
In being put into ball grinder, with the rotating speed ball milling 10min of 400r/min on planetary ball mill.
In above-mentioned technical proposal, step c, granulation：By the material after dry grinding in pallet uniform drawout, by silicic acid
On powder material in the water mist spray of sodium solution to pallet, while quickly rocking and filling the pallet of material its globulate is made
Grain, spheric granules is rolled in having the pallet of 100 mesh diatomite minus mesh so as to external sheath last layer diatomite.
Further, the low grade diatomite is the three-level diatomite for originating from Linjiang City of Jilin Province.
Further, the glass dust is from waste and old beer bottle：Ball grinder is put into after waste and old beer bottle is crushed, is expert at
Ball milling 5h on planetary ball mill, crosses 140 mesh sieves, takes minus mesh.
0.52～the 0.60mm of particle diameter of the haydite prepared using haydite obtained in said method, apparent density be 1320～
1550Kg/m3, 10.62～13.65MPa of cylindrical compress strength, porosity 42.5～51.6%.
Beneficial effects of the present invention are：Only have using the diatom soil matrix haydite obtained by the method preparation that the present invention is provided
0.5mm or so, than in the paper published, involved haydite particle diameter is much smaller.Particle diameter is less, is there is identical hole
In the case of rate, specific surface area is also bigger, can more embody the advantage of diatomite porous structure.Meanwhile, the haydite compares mesh
The sintering temperature of diatom soil matrix haydite is fired in front actual production or the paper published or patent to be reduced but haydite
Performance is not reduced.Under the present situation of energy growing tension, sintering temperature is reduced, not only save energy, the haydite of production is more
Environmental protection, can also effectively prevent diatomite from causing microcellular structure due to caving in caused by melting at high temperature, cause micropore quilt
Stifled, the reduction that product function is then presented as on product is even lost.At a lower temperature, both can make inside diatomite
Free water is fully evaporated, and organic matter can be allowed fully to burn again, plays pore creating material of the diatomite sheet under low temperature sintering
Function.
In granulation process, by the spheric granules formed under moisture state in the pallet for having 100 mesh diatomite minus mesh
Middle rolling so as to external sheath last layer diatomite, in sintering process, contains uniform glass dust, certain due to internal
At a temperature of soften and with mobility, the diatomite of outer layer is bonded in into outer surface, form stable nucleocapsid structure.
The haydite of this granularity has wide range of applications, and the load nano-titanium dioxide on haydite, titanium dioxide has under light illumination
There is sterilization ability, haydite is evenly distributed in shoe-pad, Bactericidal insoles can be prepared；Also haydite can be combined production with phase-change material
Decorative board material with conditioning function.
China's diatomite rich reserves, during traditional exploitation diatomite ore, high grade diatomite is favored, low
Grade diatomite is often dropped, and causes the wasting of resources and takes a large amount of soils.The main component of dolomite is MgCa (CO3)2,
CO can be decomposited at 700-800 DEG C2, MgO and CaO, the effect of existing pore former plays the role of flux again.By controlling to burn
Junction temperature and glass dust and the addition of borax, prepare the haydite for meeting performance.Low grade diatomite is not only opened up
A kind of new way of recycling, to enhancement of environment certain effect is also functioned to.
Specific embodiment
Following non-limiting examples can make one of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.
Test method described in following embodiments, if no special instructions, is conventional method；The reagent and material, such as
Without specified otherwise, commercially obtain.
Embodiment 1
A. get the raw materials ready, low grade diatomite, dolomite and cullet are pre-processed, then low grade diatomite and white clouds
Stone crosses respectively 100 mesh sieves, and glass dust crosses 140 mesh sieves, takes above-mentioned each material screen blanking, and following group is then weighed by mass percentage
Point：Low grade diatomite 50%, dolomite 20%, glass dust 10%, borax 20%.
B. comprehensive ball milling, by raw material ball milling in planetary ball mill is put into, and is combined process using wet-milling-drying-dry grinding,
Specially：Ball milling is carried out using high alumina ball grinder and zirconia ball；Solid material is put in ball grinder during wet-milling, adds 10 times
The water of solid material gross mass, with the rotating speed wet-milling 30min of 250r/min on planetary ball mill；Compound is fallen after wet-milling
Enter pallet and in drying in oven, at 100 DEG C 12h is dried；Powder is put in ball grinder after drying, on planetary ball mill
With the rotating speed ball milling 10min of 400r/min.
C. granulate, the drawout in pallet of the material after dry grinding, select concentration to be 13%, quality is solid material gross mass
8% sodium silicate solution, by the powder material in the water mist spray of sodium silicate solution to pallet, while quickly rock filling
The pallet of material makes its globulate particle, spheric granules is rolled in having the pallet of 100 mesh diatomite minus mesh so as to outer layer
Cladding last layer diatomite, sieves, and selects particle diameter spheric granules between 40～60 mesh.
D. ripening, the spheric granules after sieving is sealed in freshness protection package, is aged 12h naturally at room temperature；；
E. sinter, from room temperature to 300 DEG C, with the ramp of 5 DEG C/min per minute, at 300 DEG C 30min is incubated, then with 4
DEG C/ramp to 650 DEG C of min, it is incubated 2h at 650 DEG C.After sintering, with furnace temperature room temperature is cooled to.
The average grain diameter of the haydite for obtaining is 0.55mm, and apparent density is 1490Kg/m3, cylindrical compress strength is 13.65MPa,
Porosity is 42.5%.
Embodiment 2
A. get the raw materials ready, low grade diatomite, dolomite and cullet are pre-processed, then low grade diatomite and white clouds
Stone crosses respectively 100 mesh sieves, and glass dust crosses 140 mesh sieves, takes above-mentioned each material screen blanking, and following group is then weighed by mass percentage
Point：Diatomite 55%, dolomite 20%, glass dust 10%, borax 15%.
B. comprehensive ball milling, by raw material ball milling in planetary ball mill is put into, and is combined process using wet-milling-drying-dry grinding,
Specially：Ball milling is carried out using high alumina ball grinder and zirconia ball；Solid material is put in ball grinder during wet-milling, adds 10 times
The water of solid material gross mass, with the rotating speed wet-milling 30min of 250r/min on planetary ball mill；Compound is fallen after wet-milling
Enter pallet and in drying in oven, at 100 DEG C 12h is dried；Powder is put in ball grinder after drying, on planetary ball mill
With the rotating speed ball milling 10min of 400r/min.
C. granulate, the drawout in pallet of the material after dry grinding, select concentration to be 26%, quality is solid material gross mass
8% sodium silicate solution, by the powder material in the water mist spray of sodium silicate solution to pallet, while quickly rock filling
The pallet of material makes its globulate particle, spheric granules is rolled in having the pallet of 100 mesh diatomite minus mesh so as to outer layer
Cladding last layer diatomite, sieves, and selects particle diameter spheric granules between 40～60 mesh.
D. ripening, the spheric granules after sieving is sealed in freshness protection package, is aged 12h naturally at room temperature；
E. sinter, from room temperature to 300 DEG C, with the ramp of 5 DEG C/min per minute, at 300 DEG C 30min is incubated, then with 4
DEG C/700 DEG C of the ramp of min, it is incubated 1.5h at 700 DEG C.After sintering, with furnace temperature room temperature is cooled to.
The average grain diameter of the haydite for obtaining is 0.59mm, and apparent density is 1550Kg/m3, cylindrical compress strength is 11.80MPa,
Porosity is 46.3%.
Embodiment 3
A. get the raw materials ready, low grade diatomite, dolomite and cullet are pre-processed, then low grade diatomite and white clouds
Stone crosses respectively 100 mesh sieves, and glass dust crosses 140 mesh sieves, takes above-mentioned each material screen blanking, and following group is then weighed by mass percentage
Point：Diatomite 60%, dolomite 20%, glass dust 10%, borax 10%.
B. comprehensive ball milling, by raw material ball milling in planetary ball mill is put into, and is combined process using wet-milling-drying-dry grinding,
Specially：Ball milling is carried out using high alumina ball grinder and zirconia ball；Solid material is put in ball grinder during wet-milling, adds 10 times
The water of solid material gross mass, with the rotating speed wet-milling 30min of 250r/min on planetary ball mill；Compound is fallen after wet-milling
Enter pallet and in drying in oven, at 100 DEG C 12h is dried；Powder is put in ball grinder after drying, on planetary ball mill
With the rotating speed ball milling 10min of 400r/min.
C. granulate, the drawout in pallet of the material after dry grinding, select concentration to be 26%, quality is solid material gross mass
8% sodium silicate solution, by the powder material in the water mist spray of sodium silicate solution to pallet, while quickly rock filling
The pallet of material makes its globulate particle, spheric granules is rolled in having the pallet of 100 mesh diatomite minus mesh so as to outer layer
Cladding last layer diatomite.Finally select particle diameter between 40～60 mesh particle as target haydite.
D. ripening, the spheric granules after sieving is sealed in freshness protection package, is aged 12h naturally at room temperature；
E. sinter, from room temperature to 300 DEG C, with the ramp of 5 DEG C/min per minute, at 300 DEG C 30min is incubated, then with 4
DEG C/750 DEG C of the ramp of min, it is incubated 1h at 750 DEG C.After sintering, with furnace temperature room temperature is cooled to.
The average grain diameter of the haydite for obtaining is 0.56mm, and apparent density is 1320Kg/m3, cylindrical compress strength is 10.62MPa,
Porosity is 51.6%.
Table 1 below and the 2 formula percentages for being respectively different embodiments are constituted and performance parameter.
The formula percentage composition of the different embodiments of table 1
| Diatomite | Dolomite | Glass dust | Borax | |
| Embodiment one | 50 | 20 | 10 | 20 |
| Embodiment two | 55 | 20 | 10 | 15 |
| Embodiment three | 60 | 20 | 10 | 10 |
The different embodiments of table 2 prepare the performance parameter of sample
Claims (7)
1. a kind of preparation method of diatom soil matrix haydite, it is characterised in that：Methods described is raw materials used by solid material and addition
Agent is constituted, wherein,
The solid material by mass percentage, is made up of following components：
Low grade diatomite 50～60%
Dolomite 15～20%
Glass dust 5～10%
Borax 10～20%,
The additive is the sodium silicate solution that concentration is 13% or 26%, and the consumption of the sodium silicate solution is that solid material is total
The 8% of weight.
2. method according to claim 1, it is characterised in that：Methods described includes following processing steps：
A. get the raw materials ready, low grade diatomite, dolomite and cullet are pre-processed, then low grade diatomite and dolomite point
100 mesh sieves are not crossed, glass dust crosses 140 mesh sieves, take the minus mesh of above-mentioned each material, then weigh raw material by proportioning；
B. comprehensive ball milling, using the order of wet-milling-drying-dry grinding by low grade diatomite, dolomite, glass dust, borax enters
Row ball-milling treatment；
C. granulate, the uniform drawout in pallet of the material after dry grinding, spray concentration is 13% or 26% sodium silicate aqueous solution
Water smoke, prepare spheric granules, sieve, select granularity to be spheric granules between 40～60 mesh；
D. ripening, the spheric granules after sieving is sealed in freshness protection package, is aged 12h naturally at room temperature；
E. sinter, from room temperature to 300 DEG C, with the ramp of 5 DEG C/min, at 300 DEG C 30min is incubated, then with the speed of 4 DEG C/min
Rate is warmed up to 650～750 DEG C, is incubated 1～2h.
3. method according to claim 2, it is characterised in that：Step b, is entered using high alumina ball grinder and zirconia ball
Row ball milling；Solid material is put in ball grinder during wet-milling, the water of 10 times of solid material gross masses is added, in planetary ball mill
On with the rotating speed wet-milling 30min of 250r/min；Compound is poured into pallet after wet-milling and in drying in oven, dry at 100 DEG C
12h；Powder is put in ball grinder after drying, with the rotating speed ball milling 10min of 400r/min on planetary ball mill.
4. method according to claim 2, it is characterised in that：Step c, granulation：By the material after dry grinding in pallet
In uniform drawout, by the powder material in the water mist spray of sodium silicate solution to pallet, while quickly rock filling material
Pallet make its globulate particle, spheric granules is rolled in having the pallet of 100 mesh diatomite minus mesh so as to external sheath
Last layer diatomite.
5. method according to claim 1, it is characterised in that：The low grade diatomite originates from Linjiang City of Jilin Province
Three-level diatomite.
6. method according to claim 1, it is characterised in that：The glass dust is from waste and old beer bottle：By waste and old beer
Ball grinder is put into after bottle is broken, the ball milling 5h on planetary ball mill crosses 140 mesh sieves, takes minus mesh.
7. diatom soil matrix haydite obtained in claim 1～6 methods described, it is characterised in that：The particle diameter 0.52 of the haydite～
0.60mm, apparent density is 1320～1550Kg/m3, 10.62～13.65MPa of cylindrical compress strength, porosity 42.5～51.6%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611184525.0A CN106587962B (en) | 2016-12-20 | 2016-12-20 | Diatomite-based ceramsite and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611184525.0A CN106587962B (en) | 2016-12-20 | 2016-12-20 | Diatomite-based ceramsite and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106587962A true CN106587962A (en) | 2017-04-26 |
| CN106587962B CN106587962B (en) | 2020-01-21 |
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| CN108717214A (en) * | 2018-08-06 | 2018-10-30 | 曹立军 | A kind of application type optical reflectance coating and preparation method thereof |
| CN110041096A (en) * | 2019-01-16 | 2019-07-23 | 深圳陶陶科技有限公司 | Diatomite-based Porous Ceramics and preparation method thereof and system |
| TWI717053B (en) * | 2019-10-14 | 2021-01-21 | 國立臺灣大學 | A novel porous biochar ceramsite and preparing methods thereof |
| CN115231889A (en) * | 2022-06-28 | 2022-10-25 | 中原环保股份有限公司 | Baking-free ceramsite prepared from sludge incineration waste residues and preparation method thereof |
| CN116675555A (en) * | 2023-05-24 | 2023-09-01 | 武汉理工大学 | Diatomite-based hierarchical porous heat-insulating ceramic and preparation method thereof |
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| CN116675555A (en) * | 2023-05-24 | 2023-09-01 | 武汉理工大学 | Diatomite-based hierarchical porous heat-insulating ceramic and preparation method thereof |
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