CN108218396A - The swollen high intensity anti-bacteria ceramic of low-heat and preparation method prepared using silver ore tailing - Google Patents
The swollen high intensity anti-bacteria ceramic of low-heat and preparation method prepared using silver ore tailing Download PDFInfo
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Abstract
The present invention relates to a kind of formulas and method that height heat expansion intensity anti-bacteria ceramic is prepared using silver ore tailing, using silver-colored tailing, talcum, wollastonite, kaolin, fluorite, activator as raw material, the cordierite diopside cristobalite complex phase ceramic of silver ion is obtained under suitable formula and process conditions.The ceramics have the characteristics that intensity is high, coefficient of thermal expansion is small, antibiotic rate is high, and the heavy metal ion in silver-colored tailing all cures.The superior performance compared with silver-colored tailing is as building sand, concrete fill, haydite and foam glass, has widened application field;Using silver ore tailing as primary raw material, cost is reduced, improves added value.While silver-colored tailing environmental pollution is solved, huge economic benefit can be brought.
Description
Technical field
The present invention relates to a kind of high value added utilizations of silver ore tailing, and being obtained using silver-colored tailing as major ingredient ore deposit has compression strength
Greatly, the ceramic preparation that heat expansion pottery ware number is low, antibiotic rate is high.
Background technology
Silver ore tailing is the solid waste generated in the ore dressing process of silver ore, there is a large amount of silver ore tailing every year
Output mainly puts it into Tailings Dam to the processing that silver ore tailing carries out now or is backfilled in mine, such processing
Method makes silver ore tailing largely accumulate, and causes waste and the dust pollution of space resources, at the same time contains in tailing
A certain amount of heavy metal can penetrate into the soil and underground water of surrounding after long-term accumulation, so as to threaten human health,
Therefore it is extremely urgent to silver ore tailings glass.At present, the comprehensive utilization of silver ore tailing is mainly used for building sand, coagulation
The construction materials such as native filler, haydite.Using silver ore tailing preparation high intensity, low-heat is swollen, the ceramics of high antibiotic property have not been reported.
《New Building Materials》, 2010,9:17-18 Liu Dan are red, Ruan Jiongzheng, Lin Ping, and Yang Zhipeng is " silver ore tailing is for building
Build the research and application of mortar " in a text, have studied the feasibility that silver ore tailing is used for building mortar instead of lime;《Construction skill
Art》, 2013,11:Zhu 91-92 can be flourish, Ruan Jiong in " experimental study of silver-colored tail foam concrete " text using silver ore tailing,
Ordinary cement, foaming agent, water-reducing agent and discarded polystyrene foam beads are prepared for foam concrete;《Guangdong building materials》2013,
(8) in 21-24, Chen Wei " exploration to silver ore CHARACTERISTICS OF TAILINGS SAND high-strength ceramic granule production technology " text:It is produced using silver ore CHARACTERISTICS OF TAILINGS SAND
High-strength ceramic granule, the ceramic product performance produced meet the requirement of national standard;2018.1.9, Cui's sunlight roc discloses one
A kind of " method for producing foam glass using silver-colored tailing " patent of invention.2015.12, this seminar discloses one " with silver-colored tail
Ore deposit is anti-bacteria ceramic prepared by major ingredient " patent of invention.
In the studies above, first 2 are only studied silver-colored tailing as building sand and concrete fill, added value
It is relatively low.No 2 prepare haydite and foam glass obtains the haydite for meeting national standard and bubble of good performance using silver-colored tailing
Foam glass, but the effect of remaining Ag in silver-colored tailing is not accounted for, the curing effect of other heavy metal ion in tailing is not also discussed
Fruit.It is added outside raw material desilver tailing disclosed in this seminar selected by " anti-bacteria ceramic prepared using silver-colored tailing as major ingredient " viscous
Soil, quartz and fluxing agent.Outer other of raw materials used desilver tailing are ceramic convenient source, the ceramics of acquisition in addition to having antibiotic property its
He also only meets national standard at performance.The silver contained by the use of in tailing as antiseptic, due to its content relatively low (ppm grades) and
Mostly native silver, activity are low.If it effectively cannot be activated and be enriched with during porcelain making, prepared ceramic antibiotic rate meeting
It is very low.The native silver that content is relatively low in silver-colored tailing how to be made, which to be enriched with during ceramic system is standby, and is activated is prepared using silver-colored tailing
The key problem in technology of anti-bacteria ceramic, there is no open in " anti-bacteria ceramic prepared using silver-colored tailing as major ingredient ".Meanwhile porcelain making process
In can be also to determine the key that can apply of ceramics by the effectively curing of toxic heavy metal ion in tailing, " based on silver-colored tailing
The solidification effect of heavy metal is not illustrated in anti-bacteria ceramic prepared by material " yet.
Invention content
The purpose of the present invention is that in view of the above shortcomings of the prior art, is provided a kind of to utilize silver ore tailing as raw material
Prepare that low-heat is swollen, anti-bacteria ceramic of high intensity, formula is as follows:
It is formed according to the raw material of mass percent:Silver ore tailing 50%-85%, wollastonite 15%-5%, kaolin 20%-
5%th, talcum 15%-5%, fluorite 1%-2%, activator 1%-2%.
The activator is high price variable valency metal compound K2MnO4、As2O5Or Sb2O5。
The preparation method of the swollen high intensity anti-bacteria ceramic of low-heat is prepared using silver ore tailing, preparation process includes following step
Suddenly:
(1) raw material prepares:
Various raw materials crush respectively, grinding and ball milling, obtain the various raw material powders of 2000-3000 purposes;
(2) prepared by green compact:
It is mixed according to the above mentioned proportion uniformly after be put into die for molding, briquetting pressure 30MPa-50MPa;
(3) firing ceramics:
Kiln will be entered after molding body drying, using gradient increased temperature, by being warming up within 25-40 minutes 500-600 DEG C, and
20-35 minutes are kept the temperature at a temperature of this, then 1100 DEG C~1300 DEG C were warming up to by 50-70 minutes, after keeping the temperature 60-120min,
It is quickly cooled down.
Above-mentioned formula and the ceramic main performance of technique acquisition are:Coefficient of thermal expansion is less than 4 × 10-6/DEG C, bending strength
More than 85MPa, antibiotic rate 100%;Heavy metals immobilization rate 100% in silver-colored tailing.
Advantageous effect
Wollastonite, talcum, kaolin, fluorite and activator are dosed by raw material of silver ore tailing, according to certain quality hundred
Divide than cooperation, the process conditions porcelain making of reasonable design.During ceramic post sintering, wollastonite acts on forming diopside with silver-colored tailing
To increase the intensity of ceramics;With silver-colored tailing solid phase reaction formation cordierite occurs for talcum, kaolin to reduce the thermal expansion of ceramics
Coefficient;It is final to obtain diopside-cordierite-cristobalite complex phase ceramic, have the swollen performance of high strength and low thermal.Meanwhile match in ceramics
A certain proportion of fluorite is introduced in side, effect is the Si-O keys destroyed in silver-colored tailing, increases amount of liquid phase, reduces liquid phase viscosity,
Cured so as to which the heavy metal ion in silver-colored tailing be made to be easily accessible liquid phase;The effect for introducing activator is in ceramic post sintering
Native silver is converted into silver ion in the process to improve its activity.The activator of introducing is high price variable valency metal element compound,
Such as:K2MnO4、As2O5、Sb2O5Deng.Its mechanism of action is that high price variable valency metal element can restore during ceramic post sintering, so as to
Native silver is made to aoxidize and form silver ion.Silver ion decomposes the fluorine ion generated with fluorite and is complexed to ceramic surface Migration And Concentration,
It is final to enable ceramic surface that there is good antibacterial property.
Compared with silver ore tailing is as construction materials such as building sand, concrete fill, haydite and foam glass, silver is utilized
Ore deposit tailing prepares the swollen anti-bacteria ceramic of high strength and low thermal and has the advantage that:
1. expand its application range, which can not only be used as architectural ceramics, can be also used for household china, sanitary china with
And the function ceramics such as catalytic carrier porcelain.
2. preparing ceramics by raw material of silver-colored tailing, the recycling of solid waste is realized, the cost of ceramics is reduced, carries
High economic benefit.
3. with silver-colored tailing porcelain making, solves the environmental problem come due to silver-colored tailing zone.
Specific embodiment
The purpose of the present invention is what is be achieved through the following technical solutions:
Embodiment 1
A, using jaw crusher, disc pulverizer and planetary ball mill to silver ore tailing, wollastonite, kaolin, talcum,
Fluorite and activator carry out grinding respectively, obtain the various raw material powders of 2000-3000 purposes respectively.
B, it is counted according to ceramic raw material gross mass 100:Silver ore tailing 50g, kaolin 19g, wollastonite 14g, cunning are weighed respectively
Stone 15g, fluorite 1g, K2MnO41g, and be uniformly mixed each raw material using batch mixer.
C, by mixed batch merging porcelain billet mold molding, briquetting pressure 30MPa;
D, kiln will be entered after molding body drying, using gradient increased temperature, 600 DEG C was warming up to, and at this by 40 minutes
At a temperature of keep the temperature 30 minutes, then 1200 DEG C were warming up to by 70 minutes.
E, it after keeping the temperature 60min under calcination temperature, is quickly cooled down.
F, ceramic flexural strength is obtained as 97Mpa, coefficient of thermal expansion 3.0 × 10-6/ DEG C, antibiotic rate 100%, heavy metal
Curing degree 100%.
Embodiment 2
A, using jaw crusher, disc pulverizer and planetary ball mill to silver ore tailing, wollastonite, kaolin, talcum,
Fluorite and activator carry out grinding respectively, obtain the various raw material powders of 2000-3000 purposes respectively.
B, it is counted according to ceramic raw material gross mass 100:Silver ore tailing 70g, kaolin 13g, wollastonite 7g, talcum are weighed respectively
7g, fluorite 2g, As2O51g, and be uniformly mixed each raw material using batch mixer.
C, by mixed batch merging porcelain billet mold molding, briquetting pressure 35MPa;
D, kiln will be entered after molding body drying, using gradient increased temperature, 550 DEG C was warming up to, and at this by 35 minutes
At a temperature of keep the temperature 35 minutes, then 1200 DEG C were warming up to by 70 minutes.
E, it after keeping the temperature 90min under calcination temperature, is quickly cooled down.
F, ceramic flexural strength is obtained as 92Mpa, coefficient of thermal expansion 3.5 × 10-6/ DEG C, antibiotic rate 100%, heavy metal
Curing degree 100%.
Embodiment 3
A, using jaw crusher, disc pulverizer and planetary ball mill to silver ore tailing, wollastonite, kaolin, talcum,
Fluorite and activator carry out grinding respectively, obtain the various raw material powders of 2000-3000 purposes respectively.
B, it is counted according to ceramic raw material gross mass 100:Silver ore tailing 80g, kaolin 6g, wollastonite 5g, talcum are weighed respectively
5g, fluorite 1g, Sb2O52g, and be uniformly mixed each raw material using batch mixer.
C, by mixed batch merging porcelain billet mold molding, briquetting pressure 40MPa;
D, kiln will be entered after molding body drying, using gradient increased temperature, 500 DEG C was warming up to, and at this by 25 minutes
At a temperature of keep the temperature 30 minutes, then 1200 DEG C were warming up to by 70 minutes.
E, it after keeping the temperature 120min under calcination temperature, is quickly cooled down, obtains ceramic flexural strength as 86Mpa, thermal expansion
Coefficient 4.0 × 10-6/ DEG C antibiotic rate 100%, heavy metals immobilization rate 100%.
Claims (4)
1. the swollen high intensity anti-bacteria ceramic of low-heat prepared using silver ore tailing, which is characterized in that according to the raw material of mass percent
Composition:Silver ore tailing 50%-85%, wollastonite 15%-5%, kaolin 20%-5%, talcum 15%-5%, fluorite 1%-
2%th, activator 1%-2%.
2. according to claim 1 prepare the swollen high intensity anti-bacteria ceramic of low-heat using silver ore tailing, it is characterised in that:It is described
Activator is high price variable valency metal compound K2MnO4、As2O5Or Sb2O5。
3. the preparation method according to claim 1 or 2 that the swollen high intensity anti-bacteria ceramic of low-heat is prepared using silver ore tailing,
It is characterized in that, preparation process includes the following steps:
(1) raw material prepares:
Various raw materials crush respectively, grinding and ball milling, obtain the various raw material powders of 2000-3000 purposes;
(2) prepared by green compact:
It is mixed according to the above mentioned proportion uniformly after be put into die for molding, briquetting pressure 30MPa-50MPa;
(3) firing ceramics:
Kiln will be entered after molding body drying, using gradient increased temperature, 500-600 DEG C was warming up to, and at this by 25-40 minutes
At a temperature of keep the temperature 20-35 minutes, then by being warming up within 50-70 minutes 1100 DEG C~1300 DEG C, after keeping the temperature 60-120min, quickly
Cooling.
4. the preparation method according to claim 3 that the swollen high intensity anti-bacteria ceramic of low-heat is prepared using silver ore tailing, special
Sign is that the main performance of the ceramics of above-mentioned formula and technique acquisition is:Coefficient of thermal expansion is less than 4 × 10-6/DEG C, bending strength
More than 85MPa, antibiotic rate 100%;Heavy metals immobilization rate 100% in silver-colored tailing.
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CN108863401A (en) * | 2018-07-07 | 2018-11-23 | 大连地拓环境科技有限公司 | A kind of silver CHARACTERISTICS OF TAILINGS SAND high-strength ceramic granule and preparation method thereof |
CN113307603A (en) * | 2021-06-22 | 2021-08-27 | 隆昌华恒玻陶科技有限公司 | Nano titanium dioxide antibacterial ceramic mold and manufacturing method thereof |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108863401A (en) * | 2018-07-07 | 2018-11-23 | 大连地拓环境科技有限公司 | A kind of silver CHARACTERISTICS OF TAILINGS SAND high-strength ceramic granule and preparation method thereof |
CN113307603A (en) * | 2021-06-22 | 2021-08-27 | 隆昌华恒玻陶科技有限公司 | Nano titanium dioxide antibacterial ceramic mold and manufacturing method thereof |
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