CN103910534B - Energy-saving environment-friendly quick-dry aerated masonry-free wall material instantly prepared from gold ore tailings - Google Patents
Energy-saving environment-friendly quick-dry aerated masonry-free wall material instantly prepared from gold ore tailings Download PDFInfo
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- CN103910534B CN103910534B CN201310313079.9A CN201310313079A CN103910534B CN 103910534 B CN103910534 B CN 103910534B CN 201310313079 A CN201310313079 A CN 201310313079A CN 103910534 B CN103910534 B CN 103910534B
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses an energy-saving environment-friendly quick-dry aerated masonry-free wall material instantly prepared from gold ore tailings. Per one cubic meter of raw materials comprise water, tailings, slaked lime, cement, plaster powder, sodium silicate and a foaming agent. Preparation of the wall material comprises: adding the raw materials into a groove of a refit vertical-type inflatable flotation machine according to a ratio, wherein the addition amount is one-third of the groove volume; switching on a motor, stirring for 18-25 min, so as to enable the whole groove to be filled with the material and further to obtain castable concrete; transporting concrete to a wall mold for casting by a sand pump through a discharge port at the bottom of the groove of the flotation machine, wherein casting proceeds while solidification proceeds until a whole wall is casted; standing for hardening for 20-30 min, demolding, maintaining the wall for two days by watering, wherein the watering amount does not enable the wall to be whitened; and after seven days of casting the wall, randomly selecting points to detect the wall, if the wall has the strength grade of A3.5 and the dry density grade of B05, determining the wall is a superior product and accords with GB 11968-2006 standard.
Description
Technical field
The present invention relates to building material field, especially a kind of energy saving and environment friendly rapid-curing cutback aerating utilizing gold ore tailing now to make exempts to build materials for wall.
Background technology
Along with national wall changes the popularization of policy, novel environment friendly materials for wall and energy saving building material more and more receive the concern of user, and air-entrained concrete building block and sheet material are looked at by public parent in these novel wall materials just.Air-entrained concrete building block and sheet material due to Economization on land and Energy resources, preserve the ecological environment in effect day by day remarkable, be widely used the non-bearing wall body in general bolts or Framework Building.Common gas concrete flyash or silica sand is added water to wear into slurry, add powdered lime, appropriate cement, gypsum and aluminium powder, pass into steam, through stir after inject framed in, quiet stop foamed solidification after, cut into all size building block or sheet material, sent in autoclave by steaming maintaining vehicle, under the maintenance of high temperature saturated vapo(u)r, namely form the gas concrete of porous light.In the process, the quiet foamed solidification that stops needs the about 10h time, the maintenance of high temperature saturated vapo(u)r also needs about more than 10h just can complete, also need solidification more than 5 days just can to dispatch from the factory use after vapor cure, and vapor cure process is comparatively complicated, need to regulate its rate of heating, enough insulation speed and soaking time, cooling rate etc., the operation of above whole precast aerated concrete building block all needs man power and material, the facility investment expense of at substantial; And air-entrained concrete building block also needs to be transported to workyard and manually builds by laying bricks or stones, the wall of at every turn building by laying bricks or stones when masonry panel is high is limited in less than 1.8 meters, one hand tile is limited in less than 1.4 meters, after building wall, also need artificial jointing after mortar between building block and building block is dry and hard, at surface of wall brushing one deck mortar by wall surface leveling so that follow-up decoration, also need body of wall water seasoning every day more than 10 days after leveling, these processes all need the human and material resources of at substantial just can complete.
Therefore, people start to be devoted to research one not to be needed to be prefabricated into air-entrained concrete building block, can the new materials for wall of cast-in-site, and in research process, it is found that the setting time due to ordinary air-entrained concrete is longer, and disposal pouring body of wall height more than 60 centimeters time, concrete there will be sedimentation, namely dried gas concrete metope intensity is uneven, mortar, the heavy feed stocks such as cement can be deposited to bottom body of wall, there is strength of wall body skewness, namely bottom body of wall density is large, intensity is also larger, then density is little for the body of wall on upper strata, the phenomenon of the non-constant of strength of wall body, do not meet national related quality criterion.
Summary of the invention
Object of the present invention will solve current gas concrete exactly because setting time is grown, now can not be made the overall metope of cast, concrete aerated blocks can only be processed as, waste the problem of a large amount of human and material resources and facility investment expense, provide a kind of energy saving and environment friendly rapid-curing cutback aerating utilizing gold ore tailing now to make to exempt to build materials for wall.
A kind of energy saving and environment friendly rapid-curing cutback aerating utilizing gold ore tailing now to make of the present invention exempts to build materials for wall, and every cubic metre of raw material is made up of following component:
Water 380kg tailings 350kg
White lime 70kg cement 150kg
Terra alba 15kg sodium silicate 10kg
Whipping agent 1kg;
Described tailings is 70 ~ 300 orders, containing SiO
2be 22 ~ 50%, containing the gold ore tailing of Fe>=8%, wherein content of radioactive substance meets GB 6566-2010 " radioactive material radionuclides limitation ", and harmful element content meets GB/T14684 " building sand " standard; Described cement is any one in No. 325,425,525, ordinary Portland cement, preferably No. 425 cement; Described whipping agent is 4,4'-OBSH; The modulus of described sodium silicate is 2.2 ~ 3.4, SiO
2massfraction is 27.5% ~ 32.1%, Na
2o massfraction is 8.7% ~ 13.2%, and density is 1.387 ~ 1.546g/cm
3;
During preparation, raw material is added in the cell body of the vertical aerated formula flotation machine of repacking by proportioning, add-on is 1/3 of cell body volume, open motor, stir after 18 ~ 25 minutes, material is full of whole cell body and is pourable concrete, the discharge port of concrete bottom cell body is transported in the body of wall mould of required cast by sand pump, cast limit, limit is solidified, until whole face wall body is all after casting complete, quietly stop sclerosis 20 ~ 30 minutes, form removal, after this body of wall is watered maintenance two days, irrigation amount is as the criterion with metope non-whitening, casting complete is after 7 days, a detection is got at random to body of wall: strength of wall body grade A3.5, dry density rank B05, for premium grads, meet GB 11968-2006 " autoclaved aerated concrete block " standard.
The vertical aerated formula flotation machine of reequiping described in the present invention is that the axial length of the cell body of vertical aerated formula flotation machine, tubular shaft and main shaft is increased to original 2 times.
The mill tailings that the gold ore tailing used in the present invention is gold mine and press filtration mine tailing, need before using first by the flotation of mine tailing flotation machine and mine tailing metal enrichment equipment by heavy metal and harmful element enrichment process, tailings intensity after process and harmful element content meet GB/T14684 " building sand " standard, and wherein contained radioactive substance meets GB 6566-2010 " radioactive material radionuclides limitation " standard.Wherein contained main component is: SiO
2> 22%, Al
2o
3> 5.6%, 12%>=TFe (total iron)>=8%, CaO > 19.4%, also containing improving the element of concrete strength as Au, Cu, S on a small quantity.
Gold ore tailing SiO used in the present invention
2content is 22 ~ 50%, compared with the SiO in ordinary slag
2content is on the low side, and the consumption therefore adding large cement is 150kg to every cubic metre, can supplement SiO in slag on the one hand
2content is on the low side, gas concrete intensity can be made to be guaranteed on the other hand.
The present invention's white lime instead of the unslaked lime used in existing concrete aerated blocks, because the consumption of unslaked lime in the production of air-entrained concrete building block controls more complicated on the one hand, wayward, control bad, easily affects the quality of air-entrained concrete building block.On the other hand, use white lime can increase concrete viscosity in the present invention, also can play the effect of bubble in stabilizing concrete, make the bubble of generation be not easy to break, contribute to improving strength of wall body and quality.
The sodium silicate used in the present invention, mainly coordinates with terra alba the effect played and regulate concrete set time.Traditional air-entrained concrete building block is not owing to using sodium silicate, and setting time is longer, is not suitable for cast in situs body of wall, and in addition, the sodium silicate used in the present invention also has the effect improving concrete strength, impermeability, frost resistance, water tolerance.
The whipping agent used in the present invention is 4,4'-OBSH, and be commercially available concrete foamer, its consumption is generally 0.4kg/m
3, its consumption, through repeatedly studying, testing, is increased to 1.0kg/m by the present inventor
3, the pore of formation can be made evenly, stable.
Compositional selecting in above-mentioned formula of the present invention and consumption are through repeatedly to be studied, tests and draw, 1 cubic metre of raw material can foam generation 3 cubic meter of concrete, the concrete obtained with aforesaid method has even air hole distribution, pore size evenly (mean pore size is 0.2 ~ 1mm), concrete flowability and continuity splendid, the feature of setting rate fast (quiet stop then only need 10s and solidifiable), therefore ensure that the reliable in quality of its cast-in-place.
When the present invention constructs at the scene, prior supporting can be selected as required and fix body of wall mould to form casting area (or the mode of leg of frame cast is taken on limit), and in the prior bar planting in position, corner, opening for feed is reserved in body of wall die tip central position, all the other positions reserve pore, then raw material is added in the cell body of the vertical flotation cell of repacking by proportioning, add-on is 1/3 of cell body volume, open motor, impeller rotates, in groove, material is drawn into impeller vane between through bottom land by impeller lower end from surrounding, simultaneously, the low-pressure air fed by gas blower is through the air distributor of tubular shaft and impeller, also enter wherein, after material fully mixes between the blades with air, from impeller first half periphery to tiltedly releasing, by entering in whole cell body after stator current stabilization and orientation, stir after 18 ~ 25 minutes, material is full of whole cell body and is pourable concrete, the discharge port of concrete bottom cell body is transported to the opening for feed of the body of wall mould of required cast by sand pump, concrete slurry flows into be paved with bottom body of wall mould and quietly stops 10s and solidifiable, cast limit, limit is solidified, until complete face wall body of casting.Due to the present invention cast before be reserved with production well on the top of body of wall mould, concrete flows into gas in the process of body of wall mould and can discharge along production well, thus can avoid the phenomenon occurring gross blow hole in body of wall.When the present invention builds by laying bricks or stones at the scene, can simultaneously with the vertical aerated formula flotation machine of 3 ~ 4 repackings, rotation uses, and improves casting rate.
The present invention compares normal concrete aerated blocks, eliminate needs and be prefabricated into all process steps of aerated blocks and the labour of the artificial masonry panel of follow-up need in advance, and masonry wall height is unrestricted, inner-outer wall is straight, does not have the seam between building block and building block, without the need to follow-up jointing with whitewash metope operation, decoration can be directly used in, substantially reduce the duration, and lower than using traditional aerated blocks masonry panel cost, greatly improve the economic benefit of enterprise.
The present invention is applicable to various building engineering non-bearing wall body, gold ore tailing in the present invention also can with other ore deposits as copper mine, adopting iron ore tailings substitute, even common silica sand also can exempt from the inventive method cast-in-place aerating body of building a wall, the more similar concrete aerated blocks of body of wall of the present invention lightweight (every cubic metre only 650kg), and inner-outer wall all can be exempted to whitewash direct decoration, make whole buildings weight saving, there is better anti seismic efficiency.The present invention has all advantages of normal concrete aerated blocks masonry panel: the feature of energy-saving and environmental protection, low-carbon (LC), sound insulation, insulation, thermal protection, resistance to compression, antidetonation, lightweight.
Embodiment
Embodiment 1
In the present embodiment, every cubic metre of raw material is made up of following component: water 380kg, tailings 350kg, white lime 70kg, cement 150kg, terra alba 15kg, sodium silicate 10kg, whipping agent 1kg.
Described tailings is 70 ~ 300 orders, containing SiO
2be 22 ~ 50%, containing the gold ore tailing of Fe>=8%, wherein content of radioactive substance meets GB 6566-2010 " radioactive material radionuclides limitation ", and harmful element content meets GB/T14684 " building sand " standard; Described cement is any one in No. 325,425,525, ordinary Portland cement, selects No. 425 cement in the present embodiment; Described whipping agent is 4,4'-OBSH; The modulus of described sodium silicate is 2.2 ~ 3.4, SiO
2massfraction is 27.5% ~ 32.1%, Na
2o massfraction is 8.7% ~ 13.2%, and density is 1.387 ~ 1.546g/cm
3, in the present embodiment, select SiO
2massfraction is 27.5%, Na
2o massfraction is 8.7%, and density is the sodium silicate of 1.387.
During preparation, prior supporting also fixes body of wall mould formation casting area, and in the prior bar planting in position, corner, opening for feed is reserved in body of wall die tip central position, all the other positions reserve pore, raw material is added in the cell body of the vertical aerated formula flotation machine of repacking by proportioning, add-on is 1/3 of cell body volume, open motor, stir after 18 ~ 25 minutes, material is full of whole cell body and is pourable concrete, the discharge port of concrete bottom cell body is transported in the body of wall mould of required cast by sand pump, cast limit, limit is solidified, until whole face wall body is all after casting complete, quiet stop harden 20-30 minute, form removal, after this body of wall is watered maintenance two days, irrigation amount is as the criterion with metope non-whitening, casting complete is after 7 days, a detection is got at random to body of wall: strength of wall body grade A3.5, dry density rank B05, for premium grads, meet GB 11968-2006 " autoclaved aerated concrete block " standard.
Select marque to be that the axial length of its cell body, tubular shaft and main shaft is increased to original 2 times by the vertical aerated formula flotation machine of XJ5.8 in the present embodiment, certainly can also select the vertical aerated formula flotation machine of other models, the axial length of its cell body, tubular shaft and main shaft lengthens multiple and looks particular case decision.
Claims (1)
1. the energy saving and environment friendly rapid-curing cutback aerating utilizing gold ore tailing now to make exempts to build a materials for wall, it is characterized in that every cubic metre of raw material is made up of following component:
Water 380kg tailings 350kg
White lime 70kg cement 150kg
Terra alba 15kg sodium silicate 10kg
Whipping agent 1kg;
Described tailings is 70 ~ 300 orders, containing SiO
2be 22 ~ 50%, containing the gold ore tailing of Fe>=8%, wherein content of radioactive substance meets GB 6566-2010 " radioactive material radionuclides limitation ", and harmful element content meets GB/T14684 " building sand " standard; Described cement is ordinary Portland cement, and label is any one in 325 or 425 or 525; Described whipping agent is 4,4'-OBSH; The modulus of described sodium silicate is 2.2 ~ 3.4, SiO
2massfraction is 27.5% ~ 32.1%, Na
2o massfraction is 8.7% ~ 13.2%, and density is 1.387 ~ 1.546g/cm
3;
During preparation, raw material is added in the cell body of the vertical aerated formula flotation machine of repacking by proportioning, add-on is 1/3 of cell body volume, open motor, stir after 18 ~ 25 minutes, material is full of whole cell body and is pourable concrete, the discharge port of concrete bottom cell body is transported in the body of wall mould of required cast by sand pump, cast limit, limit is solidified, until whole face wall body is all after casting complete, quiet stop harden 20-30 minute, form removal, after this body of wall is watered maintenance two days, irrigation amount is as the criterion with metope non-whitening, casting complete is after 7 days, a detection is got at random to body of wall: strength of wall body grade A3.5, dry density rank B05, for premium grads, meet GB 11968-2006 standard,
The vertical aerated formula flotation machine of described repacking is that the axial length of the cell body of vertical aerated formula flotation machine, tubular shaft and main shaft is increased to original 2 times.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310313079.9A CN103910534B (en) | 2013-07-24 | 2013-07-24 | Energy-saving environment-friendly quick-dry aerated masonry-free wall material instantly prepared from gold ore tailings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310313079.9A CN103910534B (en) | 2013-07-24 | 2013-07-24 | Energy-saving environment-friendly quick-dry aerated masonry-free wall material instantly prepared from gold ore tailings |
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| Publication Number | Publication Date |
|---|---|
| CN103910534A CN103910534A (en) | 2014-07-09 |
| CN103910534B true CN103910534B (en) | 2015-07-22 |
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| CN104631688B (en) * | 2014-12-25 | 2017-09-12 | 北京北玻硅巢技术有限公司 | The crystallite foaming walling unit and its manufacture method produced using tailings |
| CN114804754B (en) * | 2022-02-28 | 2023-05-05 | 山东省公路桥梁建设集团有限公司 | Self-compacting concrete based on shear thinning effect and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093689A (en) * | 1994-04-21 | 1994-10-19 | 李震华 | A kind of concrete making method of cinder structural wood |
| CN101781107A (en) * | 2009-12-07 | 2010-07-21 | 青岛理工大学 | Steam-curing-free active powder concrete |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4591159B2 (en) * | 2005-02-07 | 2010-12-01 | 吉澤石灰工業株式会社 | Slaked lime powder and lime cream for wall materials |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093689A (en) * | 1994-04-21 | 1994-10-19 | 李震华 | A kind of concrete making method of cinder structural wood |
| CN101781107A (en) * | 2009-12-07 | 2010-07-21 | 青岛理工大学 | Steam-curing-free active powder concrete |
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