CN103011768B - A kind of city sewage sludge reclamation fires the method for paving brick - Google Patents
A kind of city sewage sludge reclamation fires the method for paving brick Download PDFInfo
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- CN103011768B CN103011768B CN201210538258.8A CN201210538258A CN103011768B CN 103011768 B CN103011768 B CN 103011768B CN 201210538258 A CN201210538258 A CN 201210538258A CN 103011768 B CN103011768 B CN 103011768B
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- brick
- modified meerschaum
- municipal sludge
- raw material
- drying
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Road Paving Structures (AREA)
- Treatment Of Sludge (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of method that city sewage sludge reclamation fires paving brick, it is brick-making raw material by 50-60 part municipal sludge, 5-8 part stalk coatedparticles, 4-6 part gypsum, 10-15 part silicate cement, 14-18 part Fluorite slag, 5-8 part shale, 3-5 part modified meerschaum, 10-15 part volcanics, 15-25 part zeolite, 5-10 part coconut husk charcoal; The produced paving brick of the present invention does not have light weight, intensity is large, water-tolerant, yielding, the advantage such as safety nuisance free, environmental protection and energy saving.The inventive method is simple, easy to operate, and raw material sources are extensive, and with low cost, save energy, decreases any discharge of municipal sludge, have good Social benefit and economic benefit.
Description
Technical field
The present invention relates to a kind of manufacture method of material of construction, be specifically related to a kind of method that city sewage sludge reclamation fires paving brick.
Background technology
Along with the quickening of Urbanization in China, treatment rate of domestic sewage improves year by year, and number and the sludge yield of municipal sewage plant also increase thereupon.At present, the sludge quantity (dry mass) that municipal sewage plant of China discharges every year is about 1,300,000 t, and increases rapidly with the speed of annual growth 10%.Sludge pollution thing has long term toxicity and non-biodegradable, if let alone unordered discharge, will become dangerous secondary pollution source, enter food chain by media such as air, underground water, surface water and soil, serious threat is to human health.Therefore, how properly to dispose municipal sludge, become the problem of domestic and international extensive concern.At present, be one of important channel of city sewage sludge reclamation using sludge incineration ash as the spike of vitrified brick, but due to its production process energy consumption excessive, required high cost, is not promoted effectively in China so far.
Summary of the invention
The object of this invention is to provide a kind of method utilizing municipal sludge to produce excellent property, energy-conserving and environment-protective, paving brick that cost is low.
City sewage sludge reclamation fires a method for paving brick, comprises the following steps:
(1) by water ratio be more than 80% municipal sludge add and be equivalent to the unslaked lime of mud weight 30-35%, the flyash of 10-15%, mixing and stirring, make its water ratio≤60%, 7-10 days is deposited in ageing;
(2) municipal sludge of water ratio≤60% is sent in agitator through conveying belt, add stalk coatedparticles, gypsum, silicate cement, Fluorite slag, shale, modified meerschaum, volcanics, zeolite, coconut husk charcoal to agitator simultaneously, under 150-200r/min rotating speed, be stirred into mixing pug, wherein the weight part of each raw material is as follows: municipal sludge 50-60, stalk coatedparticles 5-8, gypsum 4-6, silicate cement 10-15, Fluorite slag 14-18, shale 5-8, modified meerschaum 3-5, volcanics 10-15, zeolite 15-25, coconut husk charcoal 5-10;
(3) above-mentioned obtained compound is stacked ageing 2-3 days;
(4), after the mud after ageing being carried out pugging, brick press is sent into, by extruding and being cut into adobe;
(5) pile up neatly by shaping adobe, after drying in the shade under natural condition 3-5 days, forced air drying 20-24h at 105-115 DEG C, makes its water ratio be 10-15%;
(6) send into stove sintering, sintering temperature is 1020-1060 DEG C, after grilling thoroughly adobe, is cooled to room temperature kiln discharge and gets product brick.
Described stalk coatedparticles is obtained by the raw material of following weight part: kaolin 20-25, plant straw powder 15-20, water glass 15-20, carboxymethyl cellulose 0.5-1, clay 4-6; Preparation process is as follows: add in high-speed mixer by after kaolin drying with carboxymethyl cellulose; speed with 500-800rpm at 110-120 DEG C is uniformly mixed 20-30min; after adding water glass continuation stirring 10-15min again; then plant straw powder, clay is added with the blended 5-10min of the speed of 1000-1500rpm; granulation in tablets press is sent into after drying; size controlling, at 2-4mm, obtains stalk coatedparticles.
Described modified meerschaum is prepared by following method: be placed in 400-450 DEG C of kiln kiln roasting 2-3h, pulverizes and grinds to form 100-150 order powder, namely obtain modified meerschaum after porphyrize.
Beneficial effect of the present invention:
The present invention, by formula adjustment and process modification, utilizes the coated kaolin of plant straw powder, can significantly improve water tolerance and the intensity of paving brick; Modification is carried out to sepiolite, the adsorptivity of the objectionable impuritiess such as its obnoxious flavour that paving brick is discharged in use, heavy metal can be improved.The produced paving brick of the present invention does not have light weight, intensity is large, water-tolerant, yielding, the advantage such as safety nuisance free, environmental protection and energy saving.The inventive method is simple, easy to operate, and raw material sources are extensive, and with low cost, save energy, decreases any discharge of municipal sludge, have good Social benefit and economic benefit.
Embodiment
City sewage sludge reclamation fires a method for paving brick, comprises the following steps:
(1) by water ratio be more than 80% municipal sludge add and be equivalent to the unslaked lime of mud weight 30%, the flyash of 10%, mixing and stirring, make its water ratio≤60%, 7-10 days is deposited in ageing;
(2) municipal sludge of water ratio≤60% is sent in agitator through conveying belt, add stalk coatedparticles, gypsum, silicate cement, Fluorite slag, shale, modified meerschaum, volcanics, zeolite, coconut husk charcoal to agitator simultaneously, under 180r/min rotating speed, be stirred into mixing pug, wherein the weight part (kilogram) of each raw material is as follows: municipal sludge 54 parts, stalk coatedparticles 6 parts, 5 parts, gypsum, silicate cement 12 parts, Fluorite slag 15 parts, 7 parts, shale, modified meerschaum 4 parts, 10 parts, volcanics, 25 parts, zeolite, coconut husk charcoal 6 parts;
(3) above-mentioned obtained compound is stacked ageing 3 days;
(4), after the mud after ageing being carried out pugging, brick press is sent into, by extruding and being cut into adobe;
(5) pile up neatly by shaping adobe, after drying in the shade under natural condition 4 days, forced air drying 24h at 110 DEG C, makes its water ratio be 12%;
(6) send into stove sintering, sintering temperature is 1050 DEG C, after grilling thoroughly adobe, is cooled to room temperature kiln discharge and gets product brick.
Wherein, described stalk coatedparticles is obtained by the raw material of following weight part (kilogram): kaolin 22 parts, plant straw powder 18 parts, water glass 16 parts, carboxymethyl cellulose 0.8 part, clay 4 parts; Preparation process is as follows: add in high-speed mixer by after kaolin drying with carboxymethyl cellulose; speed with 800rpm at 110 DEG C is uniformly mixed 20min; after adding water glass continuation stirring 10min again; then plant straw powder, clay is added with the blended 80min of the speed of 1200rpm; granulation in tablets press is sent into after drying; size controlling, at 4mm, obtains stalk coatedparticles.
Described modified meerschaum is prepared by following method: be placed in 400 DEG C of kiln kiln roasting 3h, pulverizes and grinds to form 150 order powder, namely obtain modified meerschaum after porphyrize.
The physical and mechanical property detected result of sludge brick of the present invention is as following table:
| Project | Unit | Result |
| Density | kg/m 3 | 1178 |
| Thermal conductivity | W/（m.k） | 0.136 |
| Ultimate compression strength | MPa | 22.7 |
| Folding strength | MPa | 5.5 |
| Water-intake rate | % | 12.2 |
Claims (1)
1. city sewage sludge reclamation fires a method for paving brick, it is characterized in that, comprises the following steps:
(1) by water ratio be more than 80% municipal sludge add and be equivalent to the unslaked lime of mud weight 30-35%, the flyash of 10-15%, mixing and stirring, make its water ratio≤60%, 7-10 days is deposited in ageing;
(2) municipal sludge of water ratio≤60% is sent in agitator through conveying belt, add stalk coatedparticles, gypsum, silicate cement, Fluorite slag, shale, modified meerschaum, volcanics, zeolite, coconut husk charcoal to agitator simultaneously, under 150-200r/min rotating speed, be stirred into mixing pug, wherein the weight part of each raw material is as follows: municipal sludge 50-60, stalk coatedparticles 5-8, gypsum 4-6, silicate cement 10-15, Fluorite slag 14-18, shale 5-8, modified meerschaum 3-5, volcanics 10-15, zeolite 15-25, coconut husk charcoal 5-10;
(3) obtained compound is stacked ageing 2-3 days;
(4), after the mud after ageing being carried out pugging, brick press is sent into, by extruding and being cut into adobe;
(5) pile up neatly by shaping adobe, after drying in the shade under natural condition 3-5 days, forced air drying 20-24h at 105-115 DEG C, makes its water ratio be 10-15%;
(6) send into stove sintering, sintering temperature is 1020-1060 DEG C, after grilling thoroughly adobe, is cooled to room temperature kiln discharge and gets product brick;
Described stalk coatedparticles is obtained by the raw material of following weight part: kaolin 20-25, plant straw powder 15-20, water glass 15-20, carboxymethyl cellulose 0.5-1, clay 4-6; The preparation process of this stalk coatedparticles is as follows: add in high-speed mixer by after kaolin drying with carboxymethyl cellulose, speed with 500-800rpm at 110-120 DEG C is uniformly mixed 20-30min, after adding water glass continuation stirring 10-15min again, then plant straw powder, clay is added with the blended 5-10min of the speed of 1000-1500rpm, granulation in tablets press is sent into after drying, size controlling, at 2-4mm, obtains stalk coatedparticles;
Described modified meerschaum is prepared by following method: be placed in 400-450 DEG C of kiln kiln roasting 2-3h, pulverizes and grinds to form 100-150 order powder, namely obtain modified meerschaum after porphyrize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210538258.8A CN103011768B (en) | 2012-12-13 | 2012-12-13 | A kind of city sewage sludge reclamation fires the method for paving brick |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210538258.8A CN103011768B (en) | 2012-12-13 | 2012-12-13 | A kind of city sewage sludge reclamation fires the method for paving brick |
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| Publication Number | Publication Date |
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| CN103011768A CN103011768A (en) | 2013-04-03 |
| CN103011768B true CN103011768B (en) | 2015-11-18 |
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| CN201210538258.8A Expired - Fee Related CN103011768B (en) | 2012-12-13 | 2012-12-13 | A kind of city sewage sludge reclamation fires the method for paving brick |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310959B (en) * | 2014-10-08 | 2016-01-27 | 泰州明锋资源再生科技有限公司 | The method of the building block brick utilizing pickling mud to produce and production building block brick |
| CN104529394B (en) * | 2014-12-08 | 2017-01-11 | 王之永 | Method for preparing floor tile by using straw |
| CN105130286A (en) * | 2015-07-06 | 2015-12-09 | 上海理工大学 | River sediment adsorption brick and preparation method thereof |
| CN106478039A (en) * | 2016-10-12 | 2017-03-08 | 陈秋霞 | A kind of insulating mortar and preparation method thereof |
| CN107382367A (en) * | 2017-07-28 | 2017-11-24 | 望江县太慈新型建材有限公司 | A kind of method that common brick is prepared by municipal sludge |
| CN107814553A (en) * | 2017-09-27 | 2018-03-20 | 石狮市鸿辉环保建材有限公司 | A kind of production method of domestic sewage factory firing sludge clinker bricks in environmental protection |
| CN108675762B (en) * | 2018-05-18 | 2021-05-25 | 林飘飘 | Preparation method of red mud permeable brick |
| CN109384360B (en) * | 2018-09-26 | 2022-03-22 | 北京市政建设集团有限责任公司 | Bentonite-water glass material and use method thereof in sludge solidification |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225872A (en) * | 2011-04-30 | 2011-10-26 | 云南省建筑科学研究院 | Micropore sealant of aerated concrete blocks and preparation method thereof |
| US20120261863A1 (en) * | 2010-08-25 | 2012-10-18 | King Abdulaziz City For Science And Technology | Building bricks including plastics |
| CN102765908A (en) * | 2012-06-30 | 2012-11-07 | 安徽中龙建材科技有限公司 | Method capable of utilizing mine tailings to produce aerated hollow brick |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120261863A1 (en) * | 2010-08-25 | 2012-10-18 | King Abdulaziz City For Science And Technology | Building bricks including plastics |
| CN102225872A (en) * | 2011-04-30 | 2011-10-26 | 云南省建筑科学研究院 | Micropore sealant of aerated concrete blocks and preparation method thereof |
| CN102765908A (en) * | 2012-06-30 | 2012-11-07 | 安徽中龙建材科技有限公司 | Method capable of utilizing mine tailings to produce aerated hollow brick |
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