CN101585206A - Production process of autoclaved aerated concrete - Google Patents
Production process of autoclaved aerated concrete Download PDFInfo
- Publication number
- CN101585206A CN101585206A CNA2009101078977A CN200910107897A CN101585206A CN 101585206 A CN101585206 A CN 101585206A CN A2009101078977 A CNA2009101078977 A CN A2009101078977A CN 200910107897 A CN200910107897 A CN 200910107897A CN 101585206 A CN101585206 A CN 101585206A
- Authority
- CN
- China
- Prior art keywords
- steam
- clay body
- convalesce
- covalesce
- heat insulation
- 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.)
- Pending
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/024—Steam hardening, e.g. in an autoclave
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
The invention relates to production process of building materials, particularly relates to production process of autoclaved aerated concrete, includes regular steps of preparing materials, pouring, cutting and autoclave, and also includes step of heat insulation and convalesce, and the covalesce is indoors with a room temperature between 40 to 60 DEG, after heat insulation and convalesce, clay body is proceeded with autoclave; the convalesce room is imported with waste steam discharged by covalesce workshop to maintain room temperature. The invention is added with a step of heat insulation and convalesce, such that clay body can proceed gas generation and thicking at a proper temperature basically, which solves a series of problems of clay body bubble, clay body boiling, ununiform gas generation, submerged shrink, model collapse, which affects quality of clay body, and at the same time, the waste stream is provided with comprehensive and effective use, energy-saving and environment-protective, fermentation time of covalesce is reduced for 1 to 2 hours than regular operation, and production efficiency is improved, and percent of pass of clay body (semi-manufactured goods) can be improved from original 87.3% to 99.8%, and then cost is saved.
Description
Technical field:
The present invention relates to the construction material production technology, refer in particular to a kind of production technology of steam-pressing aero-concrete.
Background technology:
Air entrained concrete is a kind of light porous construction material, and it is to be raw material with cement, lime, slag, flyash, sand, the material of getting angry etc., through levigate, batching, cast, cutting, steam and press and operations such as milling are made.In the production technology of steam-pressing aero-concrete, must be according to the base substrate forming process through forming the pore and the characteristics in two stages of base substrate multiviscosisty (sclerosis), making stable the getting angry of base substrate expand and boiling, the mould phenomenon of collapsing do not occur, is exactly in fact that the multiviscosisty that aluminium powder is got angry with slip adapts.When raising rate faster than slip multiviscosisty, with the generation mould that collapses; The slip multiviscosisty is too fast when getting angry smooth, just produce feel suffocated, depression, crack.
The applicant is because the disappearance of the production technology of above-mentioned known steam-pressing aero-concrete, the spirit of adhering to the research innovation, keeping on improving, utilize its professional eye and professional knowledge, the research and development that just concern by get angry reaction speed and temperature to aluminium powder, the high reaction of temperature is carried out just soon, medium solution is to the corresponding increase of dissolution velocity of reactant and product under higher temperature, experiment shows: the high more reaction time started of temperature more early, reaction speed is fast more, and the reaction concluding time more early; On the contrary, then extent of reaction is slow, and the time is spun out.This test shows, raising rate and multiviscosisty speed are adapted, and must control the reaction environment temperature; Work out a kind of applied range thus, meet the production technology of the steam-pressing aero-concrete of industry utilization.
Summary of the invention:
The object of the present invention is to provide and a kind ofly promote to get angry and the base substrate multiviscosisty is coordinated to carry out the production technology of the steam-pressing aero-concrete of the performance of optimizing product structure.
Still a further object of the present invention provides a kind of convenience, practicality, can fully utilize exhaust steam, turns waste into wealth the production technology of the steam-pressing aero-concrete of energy-conserving and environment-protective.
For achieving the above object, the present invention adopts following technical scheme:
The production technology of steam-pressing aero-concrete, when including conventional batching, cast, cutting and steaming the pressure step, also include and be incubated the step of resting, it is indoor the carrying out that rest, indoor temperature remains between 40～60 ℃, and base substrate steams pressure after resting through insulation again.
Described rest indoor be with feed to steam delay unloading between the exhaust steam of discharging keep indoor temperature, cooperate the regulation and control indoor temperature by pipeline, control valve and monitoring temperature.
The insulation time of resting is 3～5 hours.
Be compared with the prior art, increase of the present invention has the insulation step of resting, and base substrate can be guaranteed substantially to get angry under the proper temperature environment and the multiviscosisty reaction.Actual tests proves: when 1. getting angry, slip expands steadily, the basic uniformity of each several part slip rise speed in the mould; 2. the bubble size is suitable, and the bubble size in each level slip of mould each several part is even, and shape is good; 3. get angry when closing to an end, slip begins obvious retrogradation, and then reaches multiviscosisty and in time solidify, and makes slip can keep good air hole structure; 4. after slip solidified, get angry reaction and slip expanded and finish, and can keep the stable of volume.Solve base substrate bubbling, base substrate boiling, the inequality of getting angry, shunk a series of green body quality problems that influence such as sinking, the mould that collapses; Simultaneously the comprehensive of exhaust steam effectively utilize energy-conserving and environment-protective.
Another advantage of the present invention is to rest fermentation time than conventional shortening 1～2 hour, enhance productivity, and the qualification rate of base substrate (semi-finished product) can bring up to 99.8% from original 87.3%, saves cost; About 3 tons/day of comprehensive utilization bled steam.
The specific embodiment:
Understand for the juror can be had the present invention's purpose, feature and function further, lift preferred embodiment now and be described in detail as follows:
The present invention is the production technology of relevant steam-pressing aero-concrete, with cement, lime, slag, flyash, sand, the material of getting angry etc. is raw material, the stirring of before this raw material being prepared burden after levigate again forms slip, then with slip casting in framed, through the internal-response moulding, and then cut, with the specification that need to obtain, again the base substrate of well cutting is sent into indoor insulation of resting and rested, send into again at last to steam and steam pressure between delaying unloading, go out finished product.
The present invention mainly is according to the relation between raising rate and the base substrate multiviscosisty speed, before steaming pressure, be incubated the base substrate of resting, the indoor temperature of resting remains between 40～60 ℃, as control temperature at 45 ℃, 50 ℃, 55 ℃ etc., after insulation between process is certain is rested, base substrate can be guaranteed substantially to get angry under the proper temperature environment and the multiviscosisty reaction, the insulation time of resting was generally about 4 hours, base substrate is fully got angry and multiviscosisty is finished, fermentation time shortened greatly than conventional 6～7 hours, enhanced productivity.Actual tests proves: when 1. getting angry, slip expands steadily, the basic uniformity of each several part slip rise speed in the mould.2. the bubble size is suitable, and the bubble size in each level slip of mould each several part is even, and shape is good.3. get angry when closing to an end, slip begins obvious retrogradation, and then reaches multiviscosisty and in time solidify, and makes slip can keep good air hole structure.4. after slip solidified, get angry reaction and slip expanded and finish, and can keep the stable of volume.Solve base substrate bubbling, base substrate boiling, the inequality of getting angry, shunk a series of green body quality problems that influence such as sinking, the mould that collapses.The qualification rate of base substrate (semi-finished product) can bring up to 99.8% from original 87.3%, and not only output improves, and is also cost-saved.
Among the present invention, rest indoor be with feed to steam delay unloading between the exhaust steam of discharging keep indoor temperature, cooperate the regulation and control indoor temperature by pipeline, control valve and monitoring temperature, temperature, humidity are basicly stable, reach the comprehensive of exhaust steam and effectively utilize energy-conserving and environment-protective; About 3 tons/day of comprehensive utilization bled steam.
The base substrate of resting by insulation, after steaming pressure, the steam-pressing aero-concrete dry density is certain keeping, do not increase under the situation of cement and lime consumption, improved air hole structure, thereby raising compression strength, dry density are the steam-pressing aero-concrete compression strength of 725kg/m3 can bring up to 6.0MPa (like product can only reach about 5.0MPa); Dry density is that the steam-pressing aero-concrete compression strength of 625kg/m3 can be brought up to 5.0Mpa (like product can only reach about 3.5MPa).Under the situation that does not reduce the steam-pressing aero-concrete dry density, optimized air hole structure, thereby raising thermal and insulating performance, dry density are the steam-pressing aero-concrete thermal conductivity factor of 725kg/m3 is 0.16W/ (mK), and like product can only reach about 0.22W/ (mK); Dry density is that the steam-pressing aero-concrete thermal conductivity factor of 625kg/m3 is 0.15W/ (mK), and like product can only reach about 0.18W/ (mK).
Production technology provided by the invention not only can effectively be improved the quality of product, and the rate of reducing the number of rejects and seconds is saved cost, and the exhaust steam of effective recycling simultaneously cuts the waste and reduces environmental pollution, has the effect of energy-saving and emission-reduction.
Claims (3)
1, the production technology of steam-pressing aero-concrete, include batching, cast, cutting and steam the pressure step, it is characterized in that: also include and be incubated the step of resting, it is indoor the carrying out that rest, indoor temperature remains between 40～60 ℃, steams pressure again after resting through insulation.
2, the production technology of steam-pressing aero-concrete according to claim 1 is characterized in that: rest indoor be with feed to steam delay unloading between the exhaust steam of discharging keep indoor temperature, cooperate the regulation and control indoor temperature by pipeline, control valve and monitoring temperature.
3, the production technology of steam-pressing aero-concrete according to claim 1 is characterized in that: the insulation time of resting is 3～5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101078977A CN101585206A (en) | 2009-06-19 | 2009-06-19 | Production process of autoclaved aerated concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101078977A CN101585206A (en) | 2009-06-19 | 2009-06-19 | Production process of autoclaved aerated concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101585206A true CN101585206A (en) | 2009-11-25 |
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ID=41369725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101078977A Pending CN101585206A (en) | 2009-06-19 | 2009-06-19 | Production process of autoclaved aerated concrete |
Country Status (1)
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| CN (1) | CN101585206A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320079A (en) * | 2011-06-14 | 2012-01-18 | 常州力顿机械科技有限公司 | Demoulding hook push ferrying vehicle |
| CN102806598A (en) * | 2011-05-29 | 2012-12-05 | 王进录 | New energy saving method for autoclaved aerated concrete block production line |
| CN102862227A (en) * | 2012-09-21 | 2013-01-09 | 无锡恒畅铁路轨枕有限公司 | Steam curing process for cob composite concrete sleeper |
| CN103264446A (en) * | 2013-05-28 | 2013-08-28 | 兖矿东华建设有限公司 | Method for manufacturing autoclaved aerated concrete heterogeneous wall component by partitioning inner cavity of mould |
| CN108656311A (en) * | 2018-05-18 | 2018-10-16 | 甘昌成 | A kind of air entrained concrete auxiliary is got angry technique |
-
2009
- 2009-06-19 CN CNA2009101078977A patent/CN101585206A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102806598A (en) * | 2011-05-29 | 2012-12-05 | 王进录 | New energy saving method for autoclaved aerated concrete block production line |
| CN102320079A (en) * | 2011-06-14 | 2012-01-18 | 常州力顿机械科技有限公司 | Demoulding hook push ferrying vehicle |
| CN102320079B (en) * | 2011-06-14 | 2013-07-03 | 常州力顿机械科技有限公司 | Demoulding hook push ferrying vehicle |
| CN102862227A (en) * | 2012-09-21 | 2013-01-09 | 无锡恒畅铁路轨枕有限公司 | Steam curing process for cob composite concrete sleeper |
| CN102862227B (en) * | 2012-09-21 | 2014-10-22 | 江苏高博智融科技有限公司 | Steam curing process for cob composite concrete sleeper |
| CN103264446A (en) * | 2013-05-28 | 2013-08-28 | 兖矿东华建设有限公司 | Method for manufacturing autoclaved aerated concrete heterogeneous wall component by partitioning inner cavity of mould |
| CN103264446B (en) * | 2013-05-28 | 2015-09-02 | 兖矿东华建设有限公司 | Separating die inner chamber manufactures the method for steam-pressing aero-concrete heterogeneous body wall body construction |
| CN108656311A (en) * | 2018-05-18 | 2018-10-16 | 甘昌成 | A kind of air entrained concrete auxiliary is got angry technique |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20091125 |