CN101643365A - Preparation method of self-heat-insulating bearing sintered porous blocks - Google Patents
Preparation method of self-heat-insulating bearing sintered porous blocks Download PDFInfo
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- CN101643365A CN101643365A CN200910063786A CN200910063786A CN101643365A CN 101643365 A CN101643365 A CN 101643365A CN 200910063786 A CN200910063786 A CN 200910063786A CN 200910063786 A CN200910063786 A CN 200910063786A CN 101643365 A CN101643365 A CN 101643365A
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Abstract
The invention relates to a preparation method of self-heat-insulating bearing sintered porous blocks. The method comprises the following steps: uniformly mixing industrial waste powder, a shale binderand an internal-combustion pore-forming agent according to a mass ratio of 1: (0.5-2): (0.01-0.2); adding water according to the process requirements; aging for 1-3 days; extruding block blanks in avacuum extruder; drying at 45+/-5 DEG C for 2-4 days; putting dry block blanks in a tunnel kiln; slowly increasing temperature to 1000+/-20 DEG C; and keeping the temperature for 8 hours to prepare the self-heat-insulating bearing sintered porous blocks. The industrial waste comprises fly ash, coal gangue or mine tailings; and the internal-combustion pore-forming agent adopts lees, faulty coal, waste residue in a paper mill or waste tires. The invention has the advantages of energy saving, waste utilization, porous structure optimization, high total porosity of the porous blocks and good heat-insulating performance and can achieve the energy-saving requirements of third-generation buildings.
Description
Technical field
The present invention relates to sintered perforated brick, the preparation method of the two regulation and control of especially a kind of grand microcosmic hole technology sintering self-heat-insulating bearing sintered porous blocks belongs to the sintered perforated brick preparing technical field.
Background technology
Brick structure is up to about 85% in China's residential housing, and lightweight, high-strength, insulation, energy-conservation province soil, sintered perforated brick that shock resistance is good demonstrate its superiority already as novel wall material.Along with carrying out and implementing of energy-saving and cost-reducing strategy, people require also to improve constantly to the thermal and insulating performance of material.In June, 2004, Beijing formally issues " the energy Saving Design of Residential Buildings standard " of energy-conservation 65% level, and promptly every square metre of heating energy consumption (mark coal) is reduced to below the 8.75kg, also claims the 3rd step building energy conservation.After this architectural design provincial standard in each big city energy-conservation 65%, the whole nation is all being formulated and is progressively being implemented.Realize that the 3rd step building energy conservation requirement except that the thermal property of considering material, must consider the reasonableness of lagging material, can not adopt the thickness that strengthens the conventional sintering perforated brick simply, and should walk the route of lightweight, high-strength, thermal insulation material appropriate design; The safety and durability of lagging material be must consider, intensity, frost resistance, erosion resistance and fastness to efflorescence etc. comprised; Cost of investment must be considered, under the prerequisite of implementing higher energy conservation standard, construction costs can not be increased too much.
From present architectural development, make sintered article have functions such as load-bearing and self-heat conserving simultaneously, and reach energy-conservation 65% standard, its terms of settlement can be started with from starting material and pass structure two aspects: starting material should use cheap trade waste as much as possible, as flyash used in this experiment, coal gangue and internal combustion pore-forming material etc.; Pass structure should be optimized design to pass, hole ratio and hole arrangement under the condition that satisfies the strength grade requirement, improve the perforated brick hole ratio when prolonging the hot-fluid bang path.
Summary of the invention
Technical problem to be solved by this invention is: the preparation method that the two regulation and control of a kind of grand microcosmic hole technology sintering self-heat-insulating bearing sintered porous blocks is provided, it can prepare the self-heat-insulating bearing sintered porous blocks with high porosity by grand micropore is optimized regulation and control.
The technical scheme that the present invention solves its technical problem employing is: is 1: 0.5～2: 0.01～0.2 uniform mixing with powdered trade waste, binding agent shale and internal combustion pore-forming material by mass ratio, mixed behind the water ageing 1～3 day by processing requirement, again with extruding adobe in the vacuum-extruder, and drying is 2～4 days under 45 ± 5 ℃ temperature, then dry brick is put into tunnel furnace and slowly be warming up to 1000 ± 20 ℃ and be incubated 8 hours, make described self-heat-insulating bearing sintered porous blocks.Described trade waste is flyash, coal gangue or mine tailings.Described internal combustion pore-forming material is vinasse, low grade coal, paper mill sludge or waste tire.
The present invention compared with prior art has following main advantage:
One. the raw materials used trade waste that is mainly, wherein flyash, coal gangue raw material sources are extensive and cheap, can significantly reduce production costs, and improve the market competitiveness, and meet the useless strategic state basic policy of national energy-conservation profit.
They are two years old. the use of internal combustion pore-forming material, and it acts as a fuel and participates in burning on the one hand, saves the energy; It produces gas by burning and can form the homodisperse micropore in brick body inside on the other hand, help obtaining the effective sintered article of light weight porous thermal insulating.
They are three years old. and adopt the two regulation and control of grand microcosmic hole technology, set about reducing the heat transfer coefficient of sintered perforated brick from two aspects.Start with on the one hand, under the requirement of satisfying strength grade, pass, hole ratio and the hole of sintered perforated brick arranged be optimized design, prolong the hot-fluid bang path, thereby help reducing thermal conductivity from grand hole; Start with from micropore on the other hand, manage to make sintered article inside to have homodisperse micropore, conduct as heat bridge blocking-up hot-fluid on the microcosmic, do not mix internal combustion agent perforated brick hole ratio on year-on-year basis and improve 5%-12%, its high porosity is further strengthened heat insulating effect, thereby helps obtaining the effective sintered perforated brick of light weight porous thermal insulating.
The perforated brick total porosity that the present invention makes is 35～52%, and ultimate compression strength is 8～17MPa, and heat transfer coefficient is 0.43～0.65W/m
2℃, the outward appearance of product and other performance also reach the technical requirements of GB 13544-2000 premium grads.
In a word, the present invention makes raw material by using trade waste, can reduce production costs, and improves the market competitiveness, meets the useless strategic state basic policy of national energy-conservation profit.By mixing the internal combustion pore-forming material, in goods, form the homodisperse micropore through producing gas behind the sintering.Because adopt the two regulation and control of grand microcosmic hole technology, it can increase the total porosity of sintered perforated brick significantly, alleviates its unit weight, reduces its thermal conductivity, improves the effect of its heat insulating, reaches the requirement of third generation building energy conservation.
Description of drawings
Fig. 1 is the structural representation of self-heat-insulating bearing sintered porous blocks of the present invention.
Among the figure: 1. rectangle cylindrical void; 2. hand is grabbed the hole; 3. rectangular opening.
Embodiment
The present invention is to provide the preparation method of the empty technology sintering self-heat-insulating bearing sintered porous blocks of the two regulation and control of a kind of grand microcosmic, this method is specifically: is 1: 0.5～2: 0.01～0.2 uniform mixing with powdered trade waste, binding agent shale and internal combustion pore-forming material by mass ratio, mixed after the suitable quantity of water ageing 1～3 day by processing requirement, extrude adobe with vacuum-extruder, and drying is 2～4 days under 45 ± 5 ℃ temperature, then dry brick is put into tunnel furnace and slowly be warming up to 1000 ± 20 ℃ and be incubated 8 hours, make described self-heat-insulating bearing sintered porous blocks.Described trade waste is flyash, coal gangue or mine tailings, and particle diameter is all less than 0.15mm; Described internal combustion pore-forming material is vinasse, low grade coal, paper mill sludge or waste tire, and particle diameter is less than 0.3mm.
The self-heat-insulating bearing sintered porous blocks that the present invention makes, its physical dimension are 240 * 190 * 90mm, 5 rows, 11 row, the grand hole orderly symmetric offset spread of interlocking.Apart from being 12mm, apart from being 12.3mm, the hole spacing is 10mm to the hole outer wall to perforated brick hole outer wall between left and right between the upper and lower.As shown in Figure 1: grand hole is divided into 1,14 rectangular openings 3 of 31 rectangle cylindrical voids and 2 hands are grabbed hole 2, and its size is respectively 10.5 * 34mm, 10.5 * 12mm and 51.5 * 34mm.
The self-heat-insulating bearing sintered porous blocks that the present invention makes, after testing: total porosity is 35～52%, and ultimate compression strength is 8～17MPa, and heat transfer coefficient is 0.43～0.65 W/m
2℃, the outward appearance of product and other performance also reach the technical requirements of GB 13544-2000 premium grads.
The present invention is optimized design by the various pass structures of ANSYS10.0 thermal analogy to pass, hole ratio and hole arrangement, optimizes pass structure shown in the accompanying drawing, and its prolongs hot-fluid bang path, helps reducing thermal conductivity.
The present invention is further illustrated in conjunction with specific examples more below, but do not limit the present invention.
Example 1: by flyash: binding agent shale: the paper mill sludge mass ratio is 1: 2: 0.05 batching, mix the water that accounts for total mass 8% and carry out ageing, enter the vacuum-extruder extrusion moulding after 72 hours, the adobe of making was 45 ± 5 ℃ dry kiln dry 48 hours, adopt the quadratic code firing technique, tunnel furnace is put in adobe slowly be warming up to 1000 ± 20 ℃ and be incubated 8 hours.Making sintered perforated brick ultimate compression strength is 15.3MPa, and thermal conductivity is 0.23W/m ℃, and heat transfer coefficient is 0.63W/m
2℃.
Example 2: coal gangue: binding agent shale: the waste tire mass ratio is 1: 1: 0.1 batching, mix the water that accounts for total mass 10% and carry out ageing, enter the vacuum-extruder extrusion moulding after 72 hours, the adobe of making was 45 ± 5 ℃ dry kiln dry 48 hours, adopt the quadratic code firing technique, tunnel furnace is put in adobe slowly be warming up to 1000 ± 20 ℃ and be incubated 8 hours.Making sintered perforated brick ultimate compression strength is 12.6MPa, and thermal conductivity is 0.19W/m ℃, and heat transfer coefficient is 0.57W/m
2℃.
Example 3: mine tailings: binding agent shale: the low grade coal mass ratio is 1: 0.5: 0.2 batching, mix the water that accounts for total mass 10% and carry out ageing, enter the vacuum-extruder extrusion moulding after 72 hours, the adobe of making was 45 ± 5 ℃ dry kiln dry 48 hours, adopt the quadratic code firing technique, tunnel furnace is put in adobe slowly be warming up to 1000 ± 20 ℃ and be incubated 8 hours.Making sintered perforated brick ultimate compression strength is 13.7MPa, and thermal conductivity is 0.25W/m ℃, and heat transfer coefficient is 0.62W/m
2℃.
Example 4: coal gangue: binding agent shale: the vinasse mass ratio is 1: 1.5: 0.01 batching, mix the water that accounts for total mass 8% and carry out ageing, enter the vacuum-extruder extrusion moulding after 72 hours, the adobe of making was 45 ± 5 ℃ dry kiln dry 48 hours, adopt the quadratic code firing technique, tunnel furnace is put in adobe slowly be warming up to 1000 ± 20 ℃ and be incubated 8 hours.Making sintered perforated brick ultimate compression strength is 12.8MPa, and thermal conductivity is 0.20W/m ℃, and heat transfer coefficient is 0.60W/m
2℃.
Claims (7)
1. the preparation method of a self-heat-insulating bearing sintered porous blocks, this method is: is 1: 0.5～2: 0.01～0.2 uniform mixing with powdered trade waste, binding agent shale and internal combustion pore-forming material by mass ratio, mixed behind the water ageing 1～3 day by processing requirement, extrude adobe with vacuum-extruder, and drying is 2～4 days under 45 ± 5 ℃ temperature, then dry brick is put into tunnel furnace and slowly be warming up to 1000 ± 20 ℃ and be incubated 8 hours, make self-heat-insulating bearing sintered porous blocks; Described trade waste is flyash, coal gangue or mine tailings; The internal combustion pore-forming material is vinasse, low grade coal, paper mill sludge or waste tire.
2. preparation method as claimed in claim 1 is characterized in that: the particle diameter of described trade waste and binding agent shale is all less than 0.15mm, and the particle diameter of internal combustion pore-forming material is less than 0.3mm.
3. preparation method as claimed in claim 1 is characterized in that: produce gas after the internal combustion pore-forming material burns in tunnel furnace, make the inner micropore that forms of self-heat-insulating bearing sintered porous blocks.
4. preparation method as claimed in claim 1 is characterized in that: perforated brick physical dimension is 240 * 190 * 90mm, 5 rows, 11 row, the grand hole orderly symmetric offset spread of interlocking.
5. preparation method as claimed in claim 4 is characterized in that: apart from being 12mm, apart from being 12.3mm, the hole spacing is 10mm to the hole outer wall to perforated brick hole outer wall between left and right between the upper and lower.
6. preparation method as claimed in claim 4 is characterized in that: grand hole is divided into 31 rectangle cylindrical voids, 14 rectangular openings and 2 in grabbing the hole, and its size is respectively 10.5 * 34mm, 10.5 * 12mm and 51.5 * 34mm.
7. preparation method as claimed in claim 1 is characterized in that: the perforated brick total porosity that makes is 35～52%, and ultimate compression strength is 8～17MPa, and heat transfer coefficient is 0.43～0.65W/m
2℃.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957134A (en) * | 2010-10-22 | 2011-01-26 | 山东新矿赵官能源有限责任公司 | Method for utilizing residual heat of tunnel furnace for sintering perforated bricks from by using coal gangue |
| CN102167618A (en) * | 2011-01-14 | 2011-08-31 | 武汉理工大学 | A coal ash-iron tailing based porous heat insulation material and a preparation method thereof |
| CN102807390A (en) * | 2012-08-26 | 2012-12-05 | 西安墙体材料研究设计院 | Porous sintering heat-insulating hollow block and manufacturing process thereof |
| CN103030341A (en) * | 2011-10-09 | 2013-04-10 | 中国科学院沈阳应用生态研究所 | Method for preparing heat-preservation material by utilizing copper tailings |
| CN104119100A (en) * | 2014-07-18 | 2014-10-29 | 中国矿业大学 | Preparation method of high-volume coal gangue sintering heat-insulating building block |
| CN104387014A (en) * | 2014-07-23 | 2015-03-04 | 平定县昌达耐火材料有限公司 | Shale-material coal-gangue brick and preparation method thereof |
| CN104609836A (en) * | 2015-02-02 | 2015-05-13 | 洪雅县青杠坪机砖厂 | Brick and preparation method thereof as well as initial mixture used for preparing brick |
| CN105924221A (en) * | 2016-04-22 | 2016-09-07 | 甘勇 | Method for producing energy-saving hollow bricks with independent air chambers by utilizing combustible filling material |
| CN108046823A (en) * | 2018-01-10 | 2018-05-18 | 和县明生环保材料有限责任公司 | A kind of high intensity fired shale-gangue perforated brick |
| CN108147733A (en) * | 2016-12-03 | 2018-06-12 | 化晨冰 | A kind of insulated standard and its processing technology |
| CN111087225A (en) * | 2019-03-14 | 2020-05-01 | 西安煤科动力科技有限公司 | Sintered brick and preparation method thereof |
| CN111099916A (en) * | 2019-03-14 | 2020-05-05 | 西安煤科动力科技有限公司 | Microporous light sintered brick and preparation method thereof |
| CN114085093A (en) * | 2021-11-30 | 2022-02-25 | 同济大学 | High-performance sintered brick building block prepared by mixing seawater with waste soil and preparation method thereof |
-
2009
- 2009-09-01 CN CN200910063786A patent/CN101643365A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957134A (en) * | 2010-10-22 | 2011-01-26 | 山东新矿赵官能源有限责任公司 | Method for utilizing residual heat of tunnel furnace for sintering perforated bricks from by using coal gangue |
| CN102167618A (en) * | 2011-01-14 | 2011-08-31 | 武汉理工大学 | A coal ash-iron tailing based porous heat insulation material and a preparation method thereof |
| CN103030341A (en) * | 2011-10-09 | 2013-04-10 | 中国科学院沈阳应用生态研究所 | Method for preparing heat-preservation material by utilizing copper tailings |
| CN102807390A (en) * | 2012-08-26 | 2012-12-05 | 西安墙体材料研究设计院 | Porous sintering heat-insulating hollow block and manufacturing process thereof |
| CN104119100A (en) * | 2014-07-18 | 2014-10-29 | 中国矿业大学 | Preparation method of high-volume coal gangue sintering heat-insulating building block |
| CN104387014A (en) * | 2014-07-23 | 2015-03-04 | 平定县昌达耐火材料有限公司 | Shale-material coal-gangue brick and preparation method thereof |
| CN104609836A (en) * | 2015-02-02 | 2015-05-13 | 洪雅县青杠坪机砖厂 | Brick and preparation method thereof as well as initial mixture used for preparing brick |
| CN105924221A (en) * | 2016-04-22 | 2016-09-07 | 甘勇 | Method for producing energy-saving hollow bricks with independent air chambers by utilizing combustible filling material |
| CN108147733A (en) * | 2016-12-03 | 2018-06-12 | 化晨冰 | A kind of insulated standard and its processing technology |
| CN108046823A (en) * | 2018-01-10 | 2018-05-18 | 和县明生环保材料有限责任公司 | A kind of high intensity fired shale-gangue perforated brick |
| CN111087225A (en) * | 2019-03-14 | 2020-05-01 | 西安煤科动力科技有限公司 | Sintered brick and preparation method thereof |
| CN111099916A (en) * | 2019-03-14 | 2020-05-05 | 西安煤科动力科技有限公司 | Microporous light sintered brick and preparation method thereof |
| CN114085093A (en) * | 2021-11-30 | 2022-02-25 | 同济大学 | High-performance sintered brick building block prepared by mixing seawater with waste soil and preparation method thereof |
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Application publication date: 20100210 |