CN102173749A - Technology for preparing ceramic tile from high-volume municipal water supply plant sludge - Google Patents
Technology for preparing ceramic tile from high-volume municipal water supply plant sludge Download PDFInfo
- Publication number
- CN102173749A CN102173749A CN2011100014091A CN201110001409A CN102173749A CN 102173749 A CN102173749 A CN 102173749A CN 2011100014091 A CN2011100014091 A CN 2011100014091A CN 201110001409 A CN201110001409 A CN 201110001409A CN 102173749 A CN102173749 A CN 102173749A
- Authority
- CN
- China
- Prior art keywords
- powder
- water supply
- supply plant
- dewatered sludge
- kaolin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000010802 sludge Substances 0.000 title claims abstract description 28
- 239000000919 ceramic Substances 0.000 title claims abstract description 20
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- 239000011449 brick Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 21
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 10
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 10
- 238000000748 compression moulding Methods 0.000 claims abstract description 10
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000001035 drying Methods 0.000 claims description 8
- 239000010433 feldspar Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 238000010304 firing Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002910 solid waste Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 2
- 239000004566 building material Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000012634 fragment Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 7
- 239000010801 sewage sludge Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052572 stoneware Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a technology for firing ceramic tiles by using dewatered sludge of a high-volume water supply plant in a city. Belongs to the field of solid waste recycling and building material production in environmental engineering. The method comprises the steps of uniformly mixing 38-42% (dry weight) of dewatered sludge powder, 38-42% of kaolin and 16-24% of potassium feldspar powder of a certain granularity in a municipal water supply plant, adding water accounting for about 20% of the dry weight of the total materials, uniformly mixing, and storing for a certain time in a constant-temperature environment; compression molding at a certain pressure; gradually raising the temperature from room temperature to 1200 ℃ according to a certain method, preserving the heat for 1 hour, and naturally cooling to room temperature to obtain the finished product. Through detection, the main technical indexes meet the national relevant standards. The invention effectively utilizes the dewatered sludge of the water supply plant, replaces other brick making raw materials, and has good environmental benefit and certain economic benefit.
Description
Technical field
The present invention relates to a kind of solid waste recovery and utilization technology and material of construction production, particularly a kind of high volume city water factory mud prepares the technology of ceramic tile.
Background technology
Along with the continuous expansion of city size, the spoil disposal problem of city water factory manifests gradually.Dewatered sludge after treatment adopts the ground landfill to dispose or burning disposal basically.The technology and equipment complexity of burning, energy consumption is big, and expense is higher, and has the problem of topsoil; Landfill not only takies a large amount of fields, and polluted underground water and rivers water resources.And abroad some researchers have carried out correlative study to the toxicity of water supply plant dewatered sludge, studies show that aluminium matter throw out can cause secondary pollution to environment, and especially the aqueous solution that goes out of aluminium salt mud drop can influence the growth of marine alga.In sum, we effectively dispose waterworks sludge will have positive meaning to water environment.
Utilize angle from protection environment and water resources persistence, it is final developing direction that the water supply plant spoil disposal is fully utilized.This is stable and ensure to water factory's safe operation and be absolutely necessary to the running balance of keeping ecotope.Scholar S.N.Monteiro etc. are with the red pottery of waterworks sludge and clay preparation, give the highest of sewage sludge add-on to 10%, and the modulus of rupture are no more than 24Mpa.People such as G.R.Xu utilize waterworks sludge and sewage plant sludge baking ceramsite, and giving sewage sludge and sewage sludge proportioning is 45/55, add other batching back brick intentions less than 16Mpa.Appoint people such as uncle's flag in flyash-clay brick production, to mix the sewage sludge of giving of 30%～45% (volume ratio) water ratio 60%～80%.People such as Ba Ruhu adopt water factory's weathering dewatered sludge, are equipped with aggregate and tackiness agent (three's mass ratio is 1: 3: 6) and make non-burning brick.In above-mentioned research, utilize waterworks sludge to prepare in the processes such as brick, aggregate for building, abrasive, ceramic industry raw material, consumption is generally lower, and product intensity is not high, and does not domesticly have a waterworks sludge potting ceramic tile patent of being correlated with.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency at prior art research, a kind of technology of city water factory dewatered sludge firing ceramics brick of high volume is proposed, dewatered sludge directly adds in the batching after drying, by compression moulding, cryodrying, high-temperature firing, form harder ceramic tile finished product.
The technical matters of described high volume city water factory dewatered sludge firing ceramics brick comprises:
1. starting material:
Mud powder: adopt city water factory dewatered sludge, make the mud powder after oven dry is pulverized, and particle diameter is less than 0.15mm;
Kaolin: chemical pure;
Feldspar in powder: particle diameter 0.15mm;
2. processing step:
1) batching (mass percent): mud powder 20%-60%; Kaolin 30%-80%; Feldspar in powder 10%-30% mixes;
2) add water: in the said mixture material, add the water of total material dry weight about 20%, stir;
3) store: in 18 ℃ of-22 ℃ of isoperibols, stored 20-24 hour;
4) compression moulding: described material is put into mould, with the compression moulding of 25Mpa-30Mpa pressure;
5) drying: green compact are put into thermostatic drying chamber, at 100-105 ℃ of dry 2h;
6) fire: room temperature heats up and is heated to 1200 ℃, and is incubated 1 hour;
7) cooling: naturally cool to room temperature, promptly get finished product.
The present invention is directed to the main raw material of city water factory dewatered sludge as brickmaking, through fully research and a large amount of, repetition test, the kaolin, feldspar in powder of preferably having determined certain proportioning are as batching, and make specific production technique and step, make finished product and detect by ceramic tile GB/T4100-2006 examination criteria.
The technical feature of described finished product has:
1) through the check of the visual appearance of finished product, deviation＜2.0% of length and width mean sizes, and fragment of brick surpasses 95% regional no significant defect, and the visual appearance of finished product meets national ceramic tile standard-required;
2) finished product (mud potting ceramic tile) water-intake rate＜3% reaches Shi ceramic tile standard-required (classification of dry-pressing ceramic tile sees Table 1);
(dry-pressing ceramic tile: the powder that mixes is placed mould compression moulding under certain pressure)
3) modulus of rupture of finished product satisfies the requirement of fine stoneware tile all greater than 25.0MPa;
4) finished product is carried out chemical resistance and detect, the cutting edge of fragment of brick does not all have visible change, is UA level, UHA level and UHB level, illustrates that the chemical resistance of this mud ceramic tile is stronger;
5) by firing, the metal ions such as Al in the goods batching can form eutectic with other material, are obviously solidified, and are difficult for leaching.
The classification of table 1 dry-pressing ceramic tile
In sum, the present invention is a kind of with the technology of city water factory mud as main raw material firing ceramics brick.Directly to add in the batching after the dewatered sludge drying,, form harder fragment of brick by compression moulding, cryodrying, high-temperature firing.This technology makes dewatered sludge obtain effective utilization, has substituted the part brick-making raw material, and a kind of material of novel environment friendly cheaply not only is provided, and the processing costs of having saved mud.In addition,, help improving roasting effect, save baking expense owing to contain combustiblecomponents in the dewatered sludge.And dewatered sludge has coking property preferably, and mixes use with kaolin, helps improving the physicals of adobe.In addition, also can in batching, add other chemical ingredientss, help further improving the various performances of fragment of brick.
Embodiment
1. starting material:
The mud powder: pulverize after taking from the oven dry of Changsha water supply plant dewatered sludge, cross 28 orders and sieve into the mud powder with 100 mesh sieve, mud powder footpath is less than 0.15mm;
Kaolin: chemical pure
Feldspar in powder: about particle diameter 0.15mm
Table 2 mud main component (w%)
2. processing step:
1) batching: adopt the mud powder: kaolin: Feldspar Powder=5: 5: 2 mass ratio batchings mixes;
2) add water: in batching, add the water of total batching dry weight 20%, mix;
3) store: stored 24 hours at Constant Temp. Oven (202-2AB type) (20 ℃), make moisture uniform distribution in batching;
4) compression moulding: batching is put into mould, utilize the compression moulding of pressure testing machine (SYA-200B) 25Mpa pressure;
5) sintering: begin heat-up rate from room temperature, be heated to 300 ℃ gradually, as drying stage with 16 ℃/minute; Be warming up to 600 ℃ with 10 ℃ of/minute speed subsequently; Then be warming up to 800 ℃ with 6 ℃ of/minute speed; Be warmed up to 1200 ℃ with 4 ℃/minute again; At last with 1200 ℃ of insulations 1 hour;
6) cooling: naturally cool to room temperature, promptly get finished product.
3. test-results:
No microgroove crack, gained fragment of brick surface, and smooth smooth.The fragment of brick water-intake rate is about 2.8%.The modulus of rupture reaches 27.67MPa.According to ceramic tile test method GB/T3810.13-2006, fragment of brick is carried out chemical resistance detect.The result shows that the cutting edge of fragment of brick does not have considerable change, and the chemical resistance of fragment of brick is preferable.
Claims (4)
1. one kind high volume city water factory mud prepares the technology of ceramic tile.Its preparation method is characterised in that with waterworks sludge and kaolin be main raw material, adds the small amount of potassium Feldspar Powder, various raw materials is added water mix, and makes half-finished adobe, with brick blank drying, roasting, makes finished product.
2. high volume waterworks sludge brick according to claim 1 is characterized in that the batching scope of raw material is: mud powder 38%-42%; Kaolin 38%-42%; Feldspar in powder 16%-24%.
3. high volume waterworks sludge brick according to claim 2 pulverizes after it is characterized in that adopting city water factory dewatered sludge to dry, and makes the mud powder, and its mud powder footpath is less than 0.15mm; Kaolin and feldspar in powder particle diameter are about 0.15mm.
4. the preparation method of high volume waterworks sludge brick according to claim 2, its feature:
1) adds water: add the water of total material dry mass about 20% in the mixture according to claim 2, stir;
2) store: in 18 ℃ of-22 ℃ of isoperibols, stored 20-24 hour;
3) compression moulding: described material is put into mould, with the compression moulding of 25Mpa-30Mpa pressure;
4) drying: green compact are put into thermostatic drying chamber, at 100 ℃ of-105 ℃ of dry 2h;
5) fire:, be warmed up to 1200 ℃ and be incubated 1 hour gradually by certain method from room temperature;
6) cooling: naturally cool to room temperature, promptly get finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100014091A CN102173749B (en) | 2011-01-06 | 2011-01-06 | Technology for preparing ceramic tile from high-volume municipal water supply plant sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100014091A CN102173749B (en) | 2011-01-06 | 2011-01-06 | Technology for preparing ceramic tile from high-volume municipal water supply plant sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102173749A true CN102173749A (en) | 2011-09-07 |
| CN102173749B CN102173749B (en) | 2013-03-13 |
Family
ID=44517047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100014091A Expired - Fee Related CN102173749B (en) | 2011-01-06 | 2011-01-06 | Technology for preparing ceramic tile from high-volume municipal water supply plant sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102173749B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731064A (en) * | 2012-06-28 | 2012-10-17 | 江苏龙腾工程设计有限公司 | Method for preparing splitting tiles by using Taihu silt |
| CN103030364A (en) * | 2012-12-13 | 2013-04-10 | 马鞍山市华宇环保设备制造有限公司 | Method for manufacturing floor tile by municipal sludge |
| CN104860649A (en) * | 2015-05-29 | 2015-08-26 | 三川德青科技有限公司 | Vitrified tile prepared from riverbed sludge as principal raw material and preparation method of vitrified tile |
| CN107935551A (en) * | 2017-12-12 | 2018-04-20 | 佛山早稻田环保节能科技有限公司 | A kind of environmental protection floor tile |
| CN110078530A (en) * | 2019-05-05 | 2019-08-02 | 东南大学 | A kind of preparation method of high performance sintered insulating brick |
| CN111875351A (en) * | 2020-07-31 | 2020-11-03 | 电子科技大学 | Method for firing ceramic based on sludge and capable of reducing energy consumption |
| CN116217207A (en) * | 2023-02-27 | 2023-06-06 | 清华大学深圳国际研究生院 | Ceramic tile and preparation method thereof |
-
2011
- 2011-01-06 CN CN2011100014091A patent/CN102173749B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 李淑展等: "污水厂污泥制地砖及其性能", 《硅酸盐学报》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731064A (en) * | 2012-06-28 | 2012-10-17 | 江苏龙腾工程设计有限公司 | Method for preparing splitting tiles by using Taihu silt |
| CN102731064B (en) * | 2012-06-28 | 2014-03-19 | 江苏龙腾工程设计有限公司 | Method for preparing splitting tiles by using Tai lake silt |
| CN103030364A (en) * | 2012-12-13 | 2013-04-10 | 马鞍山市华宇环保设备制造有限公司 | Method for manufacturing floor tile by municipal sludge |
| CN103030364B (en) * | 2012-12-13 | 2016-02-03 | 马鞍山市华宇环保设备制造有限公司 | A kind of municipal sludge makes the method for floor tile |
| CN104860649A (en) * | 2015-05-29 | 2015-08-26 | 三川德青科技有限公司 | Vitrified tile prepared from riverbed sludge as principal raw material and preparation method of vitrified tile |
| CN107935551A (en) * | 2017-12-12 | 2018-04-20 | 佛山早稻田环保节能科技有限公司 | A kind of environmental protection floor tile |
| CN110078530A (en) * | 2019-05-05 | 2019-08-02 | 东南大学 | A kind of preparation method of high performance sintered insulating brick |
| CN110078530B (en) * | 2019-05-05 | 2022-04-12 | 东南大学 | Preparation method of high-performance sintered insulating brick |
| CN111875351A (en) * | 2020-07-31 | 2020-11-03 | 电子科技大学 | Method for firing ceramic based on sludge and capable of reducing energy consumption |
| CN116217207A (en) * | 2023-02-27 | 2023-06-06 | 清华大学深圳国际研究生院 | Ceramic tile and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102173749B (en) | 2013-03-13 |
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Granted publication date: 20130313 Termination date: 20140106 |