CN104310951A - Light ceramsite co-sintered on surface by virtue of sodium sulphate and preparation method of light ceramsite - Google Patents
Light ceramsite co-sintered on surface by virtue of sodium sulphate and preparation method of light ceramsite Download PDFInfo
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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
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Abstract
The invention relates to light ceramsite co-sintered on the surface by virtue of sodium sulphate and a preparation method of the light ceramsite. The preparation method of the light ceramsite co-sintered on the surface by virtue of sodium sulphate comprises the following steps: spraying a 5-25% sodium sulphate solution in steps, drying and sintering, wherein during drying, sodium ions dissolved in water diffuse toward the surface along with moisture and are enriched on a shell of the surface of each raw nodule; and during sintering, reaction is carried out on the sodium ions in the surface layer and other substances to form fusible substances, an effect of a sintering aid is realized, content of sodium ions in the sintering aid below the surface layer of each raw nodule is low, the ceramsite sintered on the surface layer at a sintering temperature is relatively low in water absorption rate while density of an unsintered core region below the surface layer is relatively low, and finally the light ceramsite with low water absorption rate and low overall density is obtained. The preparation method of the light ceramsite co-sintered on the surface by virtue of sodium sulphate has the advantages that the problems that the water absorption rate of the ceramsite is low, strength is high and volume weight is low are solved; meanwhile, a technology is simple, operation is safe, mass production can be realized, and cost is low.
Description
Technical field
The invention belongs to new building material technical field, be specifically related to a kind of sodium sulfate surface light ceramic helping sintering and preparation method thereof.
Background technology
Haydite is with clay, industrial residue, waste material, mine tailing, low grade shale etc. are raw material, add a small amount of binding agent and additive, light skeletal is made through traditional technology processes such as mixing, balling-up high temperature sinterings, it has that unit weight is light, intensity is high, thermal conductivity is low, refractoriness is higher, heat-preserving anti-freezing is anticorrosive, shock resistance, antidetonation, wear-resisting without features such as radiations (without nuisance), be a kind of green construction material of high-quality.Water absorbing properties due to haydite has had a strong impact on workability and the cementing power of haydite concrete, so need to add the sintering aids such as easy-sintering mineral, waste residue to improve the sintering degree of haydite, reduces the water-intake rate of haydite.Sintering aid mixes with raw material, reduces the sintering temperature of haydite, makes haydite fine and close, increases haydite proportion simultaneously, reduces the heat-insulating sound-insulating effect of haydite and limits the use of haydite.Although sintering-expanded haydite solves the water-intake rate of haydite and the problem of heat-insulating sound-insulating, but require that its raw materials for production must be to burn swollen raw material, this raw material is little at occurring in nature, haydite is produced on the one hand is again at high temperature expanded and hollow sphere that is that formed, energy consumption is higher, haydite intensity is not high, ensure product performance and size by the performance of raw material, technique difficulty controls.
Summary of the invention
The object of the invention is to overcome the shortcoming existed in above-mentioned prior art, provide a kind of sodium sulfate surface light ceramic helping sintering and preparation method thereof, have surperficial densified sintering product, global density is low, and water-intake rate is little, and intensity is high, the simple advantage of preparation technology.
For achieving the above object, a kind of sodium sulfate surface helps the light ceramic preparation method of sintering, by the following technical solutions: comprise the following steps:
1) raw material is got by percentage to the quality: the flyash of 0%-65%, the clay of 35%-95%, the ceramic waste material of 0 ~ 65% and the clay mine tailing of 0 ~ 65%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and pore former be with mass ratio 100:(5 ~ 20) mixing, obtain compound;
3) by step 2) compound prepared carries out balling-up process and obtains raw material ball, and in balling-up process by concentration be 5% ~ 25% aqueous sodium persulfate solution be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 8 ~ 15% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains carries out burning till process 3 ~ 5 hours at 900 ~ 1200 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Described step 2) in pore former be coal dust, granularity is less than 0.125mm.
Step 3) in aqueous sodium persulfate solution be intermittent spray.
Described step 3) in globulation, add compound according to balling-up situation with intermittent type.
Described step 3) in the equipment of balling-up process be coater.
Described step 5) in burn till process equipment be rotary kiln.
Sodium sulfate surface helps the light ceramic of sintering: its surperficial densified sintering product, inside does not sinter in vesicular, and water-intake rate is less than 5%, and unit weight is 811.41 ~ 1365.31Kg/m
3.
A kind of sodium sulfate surface helps the light ceramic preparation method of sintering to have following beneficial effect: prior art of comparing, by sodium sulfate sintering aid is added with the form of spraying, and metabisulfite solution concentration is 5% ~ 25%, sodium exists in solution with the form of sodium ion, the sodium ion be dissolved in the water in humidogene pellet time dry with moisture to raw material ball surface diffusion, moisture is evaporated rear sodium ion and is enriched in raw material ball surface crust, in sintering process, the sodium ion of upper layer and other substance reaction form meltable material, 900 ~ 1200 DEG C of meltings, promote upper layer sintering, play the effect of sintering aid.In the following sintering aid of upper layer of raw material ball, sodium ions content is low, the haydite burnt till under upper layer sintering temperature, water-intake rate is less, but the non-sintered density of the following nucleus of upper layer is lower, finally obtain water-intake rate little while the low sodium sulfate surface of global density help the light ceramic of sintering.The sintering aid sodium sulfate cost adopted is low, easy-to-control added amount.It is simple that sodium sulfate surface of the present invention helps the preparation method of the light ceramic of sintering to have technique, and operational safety, can be mass-produced, and low cost and other advantages.
Obtained a kind of sodium sulfate surface helps the light ceramic of sintering, surperficial densified sintering product, and inside does not sinter in vesicular, and global density is low; Haydite intensity is high, and unit weight is little, has good heat-insulating sound-insulating effect.The sodium sulfate sintering aid that the present invention obtains mainly rises at 800 DEG C ~ 1000 DEG C and helps nodulizing, and high-temperature sulfuric acid root decomposes and can in haydite, form hole and reduce haydite density.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the inventive method;
The haydite section micro-structure diagram of Fig. 2 prepared by embodiment 12.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
See Fig. 1 and 2, a kind of sodium sulfate surface helps the light ceramic preparation method of sintering to comprise the following steps:
1) raw material is got by percentage to the quality: the flyash of 0%-65%, the clay of 35%-95%, the ceramic waste material of 0 ~ 65% and the clay mine tailing of 0 ~ 65%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and granularity be less than the pore former of 0.125mm with mass ratio 100:(5 ~ 20) mixing, obtain compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 5% ~ 25% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 8 ~ 15% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 3 ~ 5 hours at 900 ~ 1200 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Sodium sulfate surface helps a light ceramic for sintering, and its surperficial densified sintering product, inside does not sinter in vesicular, and water-intake rate is less than 5%, and unit weight is 811.41 ~ 1365.31Kg/m
3.
Described pore former is coal dust.
Table 1 is the interpolation content of each component in embodiment 1 to embodiment 12 and the water-intake rate of firing time, temperature and obtained material and unit weight.
Table 1
Embodiment 1:
1) raw material is got by percentage to the quality: the flyash of 65% and the clay of 35%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:5, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 5% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 8% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 3 hours at 1200 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 2.98%, unit weight is 1223.47Kg/m
3.
Embodiment 2:
1) raw material is got by percentage to the quality: the mixture of the clay of 35% and the ceramic waste material of 65%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:6, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 8% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 9% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 3.5 hours at 1150 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 3.62%, unit weight is 1346.51Kg/m
3.
Embodiment 3:
1) raw material is got by percentage to the quality: the mixture of the clay of 35% and the clay mine tailing of 65%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:7, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 10% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 10% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 4 hours at 1100 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 3.26%, unit weight is 1185.27Kg/m
3.
Embodiment 4:
1) get raw material by percentage to the quality: the flyash of 20%, the clay of 65% and 15% the mixture of ceramic waste material; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:9, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 13% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 11% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 4.5 hours at 1000 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 4.16%, unit weight is 976.51Kg/m
3.
Embodiment 5:
1) get raw material by percentage to the quality: the clay of 20%, the ceramic waste material of 40% and 40% the mixture of clay mine tailing; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:10, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 15% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 12% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 5 hours at 900 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 4.52%, unit weight is 833.48Kg/m
3.
Embodiment 6:
1) get raw material by percentage to the quality: the flyash of 30%, the clay of 35% and 35% the mixture of clay mine tailing; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:13, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 18% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 13% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 3 hours at 1200 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 1.34%, unit weight is 1365.31Kg/m
3.
Embodiment 7:
1) raw material is got by percentage to the quality: the mixture of the flyash of 1%, the clay of 95%, the ceramic waste material of 2% and the clay mine tailing of 2%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:15, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 20% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 14% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 5 hours at 900 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 4.69%, unit weight is 811.41Kg/m
3.
Embodiment 8:
1) raw material is got by percentage to the quality: the mixture of the flyash of 20%, the clay of 40%, the ceramic waste material of 20% and the clay mine tailing of 20%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:18, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 21% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 15% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 5 hours at 1000 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 4.29%, unit weight is 1046.12Kg/m
3.
Embodiment 9:
1) raw material is got by percentage to the quality: the mixture of the flyash of 30%, the clay of 35%, the ceramic waste material of 20% and the clay mine tailing of 15%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:20, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 23% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 10% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 3.4 hours at 1170 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 1.38%, unit weight is 1322.39Kg/m
3.
Embodiment 10:
1) raw material is got by percentage to the quality: the mixture of the flyash of 45%, the clay of 50%, the ceramic waste material of 2% and the clay mine tailing of 3%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:16, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 25% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 11.5% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 4.6 hours at 950 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 4.27%, unit weight is 1023.25Kg/m
3.
Embodiment 11:
1) raw material is got by percentage to the quality: the mixture of the flyash of 10%, the clay of 70%, the ceramic waste material of 15% and the clay mine tailing of 5%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and the granularity pore former that is less than 0.125mm mixes with mass ratio 100:17, obtains compound;
3) by step 2) compound prepared puts into coater and carries out balling-up process and obtain raw material ball, in globulation, compound is added with intermittent type according to balling-up situation, and in balling-up process by concentration be 9% aqueous sodium persulfate solution intermittent type be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 8.5% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains puts into rotary kiln and carries out burning till process 3.7 hours at 1080 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
Water-intake rate 3.65%, unit weight is 1247.28Kg/m
3.
Embodiment 12:
Taking proportioning is flyash 40%, Datong District's soil be 60% raw material ball milling mix, after ball milling, dry porphyrize is crossed 80 mesh sieves to obtain blank for subsequent use; Mixed by the coal dust that blank and granularity are less than 0.125mm, the ratio of pore former and blank is 20:100; According to equipment capacity, 2Kg compound is put into nodulizer to roll, with spraying plant, the aqueous sodium persulfate solution intermittent type of prepare in advance 20% is sprayed onto balling-up on compound, in raw material ball, the content of aqueous sodium persulfate solution accounts for 14.5% of raw material ball total mass, compound dry powder is added according to balling-up situation intermittent type, nodulizer continues to roll, microballoon is grown up gradually, raw material ball meet the requirements of size (5mm) afterwards balling-up terminate; Sieved by raw material ball, removing particle diameter is greater than or less than the raw material ball of requirement size, then finished product is put into drying plant dry; Dried raw material ball is put into rotary kiln and burns till 3.5 hours at 1150 DEG C; Finally, the haydite after burning till is carried out screening choosing, the sodium sulfate surface obtaining meeting dimensional requirement helps the light ceramic of sintering.
Water-intake rate 2.45%, unit weight is 1307.43Kg/m
3.
The sodium sulfate surface obtained helps the light ceramic of sintering finally to carry out screening process as required, obtains the product of final desired size.
The present invention has the following advantages: obtained haydite surface densified sintering product, and inside does not sinter in vesicular, and global density is low; Haydite intensity is high, and unit weight is little, has good heat-insulating sound-insulating effect; The sintering aid sodium sulfate cost adopted is low, easy-to-control added amount.It is simple that sodium sulfate surface of the present invention helps the preparation method of the light ceramic of sintering to have technique, and operational safety, can be mass-produced, and low cost and other advantages.The sodium sulfate sintering aid that the present invention obtains mainly rises at 800 DEG C ~ 1000 DEG C and helps nodulizing, and high-temperature sulfuric acid root decomposes and can in haydite, form hole and reduce haydite density.
Claims (7)
1. sodium sulfate surface helps a preparation method for the light ceramic of sintering, it is characterized in that: comprise the following steps:
1) raw material is got by percentage to the quality: the flyash of 0%-65%, the clay of 35%-95%, the ceramic waste material of 0 ~ 65% and the clay mine tailing of 0 ~ 65%; Blank is obtained for subsequent use after carrying out ball milling, drying and porphyrize process after being mixed by raw material; The blank that wherein granularity is less than 65 μm accounts for more than 90% of blank total mass;
2) by step 1) blank prepared and pore former be with mass ratio 100:(5 ~ 20) mixing, obtain compound;
3) by step 2) compound prepared carries out balling-up process and obtains raw material ball, and in balling-up process by concentration be 5% ~ 25% aqueous sodium persulfate solution be sprayed onto on compound, in the raw material ball of acquisition, the content of aqueous sodium persulfate solution accounts for 8 ~ 15% of raw material ball total mass;
4) by step 3) raw material ball that obtains carries out process of sieving, and dry, obtain dry raw material ball;
5) by step 4) the dry raw material ball that obtains carries out burning till process 3 ~ 5 hours at 900 ~ 1200 DEG C, and rear cooling obtains the light ceramic that sodium sulfate surface helps sintering.
2. a kind of sodium sulfate surface according to claim 1 helps the preparation method of the light ceramic of sintering, it is characterized in that: described step 2) in pore former be coal dust, granularity is less than 0.125mm.
3. a kind of sodium sulfate surface according to claim 1 helps the preparation method of the light ceramic of sintering, it is characterized in that: step 3) in aqueous sodium persulfate solution be intermittent spray.
4. a kind of sodium sulfate surface according to claim 1 helps the preparation method of the light ceramic of sintering, it is characterized in that: described step 3) in globulation, add compound according to balling-up situation with intermittent type.
5. a kind of sodium sulfate surface according to claim 1 helps the preparation method of the light ceramic of sintering, it is characterized in that: described step 3) in the equipment of balling-up process be coater.
6. a kind of sodium sulfate surface according to claim 1 helps the preparation method of the light ceramic of sintering, it is characterized in that: described step 5) in burn till process equipment be rotary kiln.
7. the sodium sulfate surface that preparation method according to claim 1 obtains helps the light ceramic of sintering, and it is characterized in that: its surperficial densified sintering product, inside does not sinter in vesicular, and water-intake rate is less than 5%, and unit weight is 811.41 ~ 1365.31Kg/m
3.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1440955A (en) * | 2003-03-28 | 2003-09-10 | 解贵 | Production process of flyash haydite |
| CN102126838A (en) * | 2010-12-09 | 2011-07-20 | 江西赣锋锂业股份有限公司 | Method for preparing light building material ceramsites by using lithium extraction slag of lithium mica |
| CN102815965A (en) * | 2012-08-30 | 2012-12-12 | 武汉钢铁(集团)公司 | Porous ceramsite made of low-silicon iron tailings and preparation method of porous ceramsite |
| CN103086741A (en) * | 2013-01-18 | 2013-05-08 | 河海大学 | Biological ceramisite filter material made of vulcanized lead zinc ore flotation tailings, and preparation method thereof |
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2014
- 2014-09-29 CN CN201410514694.0A patent/CN104310951B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1440955A (en) * | 2003-03-28 | 2003-09-10 | 解贵 | Production process of flyash haydite |
| CN102126838A (en) * | 2010-12-09 | 2011-07-20 | 江西赣锋锂业股份有限公司 | Method for preparing light building material ceramsites by using lithium extraction slag of lithium mica |
| CN102815965A (en) * | 2012-08-30 | 2012-12-12 | 武汉钢铁(集团)公司 | Porous ceramsite made of low-silicon iron tailings and preparation method of porous ceramsite |
| CN103086741A (en) * | 2013-01-18 | 2013-05-08 | 河海大学 | Biological ceramisite filter material made of vulcanized lead zinc ore flotation tailings, and preparation method thereof |
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