CN103979997B - A kind of water-quenched manganese slag that utilizes prepares the method for high strength gas concrete as aggregate - Google Patents
A kind of water-quenched manganese slag that utilizes prepares the method for high strength gas concrete as aggregate Download PDFInfo
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- CN103979997B CN103979997B CN201410189901.XA CN201410189901A CN103979997B CN 103979997 B CN103979997 B CN 103979997B CN 201410189901 A CN201410189901 A CN 201410189901A CN 103979997 B CN103979997 B CN 103979997B
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Abstract
The invention discloses a kind of water-quenched manganese slag that utilizes and prepare the method for high strength gas concrete as aggregate.Raw material is prepared burden by weight: water-quenched manganese slag aggregate 40-60 part, cement 15 parts, 15 parts, lime, silica sand 67 parts, 3 parts, gypsum, 1 part, sodium hydroxide, polycarboxylic acids dehydragent 0.6 part, aluminium powder 0.15 part, ratio of water to material is 0.52-0.53.The present invention utilizes the feature of water-quenched manganese slag granule interior structural porous, 0.4-0.9mm water-quenched manganese slag particle is incorporated in gas concrete slip as aglite, not only improve gas concrete pore structure, prepare the high strength gas concrete of ultimate compression strength at more than 4.12MPa, preferably resolve the problem of existing gas concrete low strength, and water-quenched manganese slag particle can directly be used in material of construction, there are obvious economic benefit and social effect.
Description
Technical field
The present invention relates to a kind of method utilizing water-quenched manganese slag aggregate to prepare high strength gas concrete, belong to building material technical field.
Background technology
Manganese is widely used in Iron And Steel Industry, play an important role in production high-performance steel, there is saying of " without manganese not Cheng Gang ", manganese needed for its Iron And Steel Industry has 50.7% from the smelting of manganeseirom factory, along with growth and the continuous casting of domestic and international steel market, the development of the technology such as external refining, has directly driven the increase of the output of manganese, and the consequent is in a large number containing the waste sludge discharge of manganese.Water-quenched manganese slag be manganeseirom in 1400 DEG C of high-temperature smelting process by the granular particle with vesicular structure of discharged slag through water quick cooling, according to relevant enterprise statistics and, often produce 1 ton of manganese alloy and will produce 2-2.5 ton water-quenched manganese slag, although water-quenched manganese slag possesses latent hydraulicity and Pozzolanic feature after shrend chilling, but the activity showed is more weak, make its utility value less, utilization ratio is lower, the water-quenched manganese slag of discharge directly abandons without any process by major part manganeseirom enterprise, or build a dam and bank up, random discharge and water-quenched manganese slag of banking up not only take a large amount of soil, but also contaminate environment, also cause the waste of available stock simultaneously.Guangxi is economized as the emerging manganese sparetime university that national manganese resource is the abundantest, and water-quenched manganese slag utilization obstacle causes anxiety, 2010, and Guangxi governmental input hundred million yuan regulation water-quenched manganese slag pollutes, and therefore fully utilize discarded water-quenched manganese slag, allowing it turn waste into wealth is the task of top priority.
Air-entrained concrete building block is in the batching of calcareous material and siliceous material, adds aluminium powder as foaming agent, through the porous silicate building block of water stirring, expansion of getting angry, casting, precuring cutting, steam press maintenance.As a kind of novel materials for wall, air-entrained concrete building block has the plurality of advantages such as lightweight, heat insulation, insulation, is the material that single-material unique in materials for wall can reach 65% power conservation requirement.At present, the principles and policies of energy-saving and emission-reduction, low-carbon economy are actively carried out by country, put into effect a series of about materials for wall and the notice promoting energy saving building, be intended to environmental protect, economize on resources, and this novel wall material of gas concrete has well met national relevant policies requirement.
The present invention utilizes water-quenched manganese slag to have the characteristic of internal structure porous, aglite is it can be used as to be incorporated in gas concrete slip, water-quenched manganese slag can not only be utilized by large dosage, solve current water-quenched manganese slag as cement mixture and the not high problem of concrete admixture utilization ratio, and improve the pore texture of original gas concrete, prepare the air-entrained concrete building block of high strength, for existing water-quenched manganese slag finds a new utilization ways, there is obvious social effect and economic benefit.
Summary of the invention
The object of the invention is the feature utilizing water-quenched manganese slag internal structure porous, it can be used as aglite to be incorporated in gas concrete slip, produce high strength, the air-entrained concrete building block of low unit weight.
Concrete steps are:
(1) raw material is prepared burden by weight: water-quenched manganese slag aggregate 40-60 part, cement 15 parts, 15 parts, lime, 3 parts, gypsum, silica sand 67 parts, aluminium powder 0.15 part, 1 part, sodium hydroxide, polycarboxylic acids dehydragent 0.6 part, water-quenched manganese slag aggregate has certain water-absorbent, along with the difference of water-quenched manganese slag volume, water requirement also increases thereupon, and the ratio of water to material producing gas concrete is: 0.50-0.55.
(2) water-quenched manganese slag aggregate processing: the water-quenched manganese slag emitted with manganeseirom factory is raw material, obtains the fine particle of particle diameter at 0.4-0.9mm by water-quenched manganese slag by the screening of 0.9mm and 0.4mm square hole sieve, stores stand-by after being dried.
(3) silica sand is put into ball mill grinding to specific surface area 300-335m
2/ kg, lime at grinding of ball grinder to specific surface area 350-400m
2/ kg.
(4) sodium hydroxide and water reducer are added to the water to mix obtain mixed solution.
(5) silica sand cement, gypsum, step (3) obtained stirs and obtains mixed slurry in 3-5 minute together with after the mixing of step (4) gained mixed solution.
(6) lime that water-quenched manganese slag aggregate step (2) obtained and step (3) obtain joins in step (5) gained mixed slurry and stirs 5 minutes, add aluminium powder afterwards and stir 30 seconds again, obtain the compound mixed, then the compound mixed is poured into rapidly in air-entrained concrete building block mould and get angry, in whipping process, Insulation is set, ensures that molding temperature when slip is built is at 40-50 DEG C.
(7) after having got angry, precuring 3 hours at 55 DEG C of temperature, size cuts idiosome on request subsequently.
(8) after having cut, air-entrained concrete building block mould is removed, and the air-entrained concrete building block cut is delivered to steam press maintenance in autoclave, steaming pressuring curing system is: intensification 2.5 is little reaches 1.2-1.25mpa up to normal atmosphere, constant temperature and pressure 6.5 hours, namely decrease temperature and pressure obtains gas concrete to normal temperature and pressure in 2 hours again.
Invention not only improves gas concrete pore structure, prepare the high strength gas concrete of ultimate compression strength at more than 4.12MPa, preferably resolve the problem of existing gas concrete low strength, and water-quenched manganese slag particle can directly be used in material of construction, there are obvious economic benefit and social effect.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the embodiment of the present invention 1.
Embodiment
Embodiment 1:
(1) raw material is prepared burden by weight: 40 parts, water-quenched manganese slag aggregate, cement 15 parts, 15 parts, lime, 3 parts, gypsum, silica sand 67 parts, aluminium powder 0.15 part, 1 part, sodium hydroxide, 3310c polycarboxylic acids dehydragent (water-reducing rate 20.1%) 0.6 part, and the ratio of water to material producing gas concrete is: 0.52.
(2) water-quenched manganese slag aggregate processing: the water-quenched manganese slag emitted with manganeseirom factory is raw material, obtains the fine particle of particle diameter at 0.4-0.9mm by water-quenched manganese slag by the screening of 0.9mm and 0.4mm square hole sieve, stores stand-by after being dried.
(3) silica sand is put into ball mill grinding to specific surface area 300m
2/ kg, lime at grinding of ball grinder to specific surface area 350m
2/ kg.
(4) sodium hydroxide and water reducer are added to the water to mix obtain mixed solution.
(5) silica sand cement, gypsum, step (3) obtained stirs and obtains mixed slurry in 3 minutes together with after the mixing of step (4) gained mixed solution.
(6) lime that water-quenched manganese slag aggregate step (2) obtained and step (3) obtain joins in step (5) gained mixed slurry and stirs 5 minutes, add aluminium powder afterwards and stir 30 seconds again, obtain the compound mixed, then the compound mixed is poured into rapidly in air-entrained concrete building block mould and get angry, in whipping process, Insulation is set, ensures that molding temperature when slip is built is at 50 DEG C.
(7) after having got angry, precuring 3 hours at 55 DEG C of temperature, size cuts idiosome on request subsequently.
(8) after having cut, air-entrained concrete building block mould is removed, and the air-entrained concrete building block cut is delivered to steam press maintenance in autoclave, steaming pressuring curing system is: intensification 2.5 is little reaches 1.25mpa up to normal atmosphere, constant temperature and pressure 6.5 hours, namely decrease temperature and pressure obtains unit weight 597kg/m to normal temperature and pressure in 2 hours again
3, ultimate compression strength is the gas concrete of 4.68MPa.
Embodiment 2:
(1) raw material is prepared burden by weight: 50 parts, water-quenched manganese slag aggregate, cement 15 parts, 15 parts, lime, 3 parts, gypsum, silica sand 67 parts, aluminium powder 0.15 part, 1 part, sodium hydroxide, 3310c polycarboxylic acids dehydragent (water-reducing rate 20.1%) 0.6 part, and the ratio of water to material producing gas concrete is: 0.53.
(2) water-quenched manganese slag aggregate processing: the water-quenched manganese slag emitted with manganeseirom factory is raw material, obtains the fine particle of particle diameter at 0.4-0.9mm by water-quenched manganese slag by the screening of 0.9mm and 0.4mm square hole sieve, stores stand-by after being dried.
(3) silica sand is put into ball mill grinding to specific surface area 335m
2/ kg, lime at grinding of ball grinder to specific surface area 380m
2/ kg.
(4) sodium hydroxide and water reducer are added to the water to mix obtain mixed solution.
(5) silica sand cement, gypsum, step (3) obtained stirs and obtains mixed slurry in 4 minutes together with after the mixing of step (4) gained mixed solution.
(6) lime that water-quenched manganese slag aggregate step (2) obtained and step (3) obtain joins in step (5) gained mixed slurry and stirs 5 minutes, add aluminium powder afterwards and stir 30 seconds again, obtain the compound mixed, then the compound mixed is poured into rapidly in air-entrained concrete building block mould and get angry, in whipping process, Insulation is set, ensures that molding temperature when slip is built is at 45 DEG C.
(7) after having got angry, precuring 3 hours at 55 DEG C of temperature, size cuts idiosome on request subsequently.
(8) after having cut, air-entrained concrete building block mould is removed, and the air-entrained concrete building block cut is delivered to steam press maintenance in autoclave, steaming pressuring curing system is: intensification 2.5 is little reaches 1.2mpa up to normal atmosphere, constant temperature and pressure 6.5 hours, namely decrease temperature and pressure obtains unit weight 623kg/m to normal temperature and pressure in 2 hours again
3, ultimate compression strength is the gas concrete of 5.87MPa.
Embodiment 3:
(1) raw material is prepared burden by weight: 60 parts, water-quenched manganese slag aggregate, cement 15 parts, 15 parts, lime, 3 parts, gypsum, silica sand 67 parts, aluminium powder 0.15 part, 1 part, sodium hydroxide, 3310c polycarboxylic acids dehydragent (water-reducing rate 20.1%) 0.6 part, and the ratio of water to material producing gas concrete is: 0.55.
(2) water-quenched manganese slag aggregate processing: the water-quenched manganese slag emitted with manganeseirom factory is raw material, obtains the fine particle of particle diameter at 0.4-0.9mm by water-quenched manganese slag by the screening of 0.9mm and 0.4mm square hole sieve, stores stand-by after being dried.
(3) silica sand is put into ball mill grinding to specific surface area 330m
2/ kg, lime at grinding of ball grinder to specific surface area 400m
2/ kg.
(4) sodium hydroxide and water reducer are added to the water to mix obtain mixed solution.
(5) silica sand cement, gypsum, step (3) obtained stirs and obtains mixed slurry in 5 minutes together with after the mixing of step (4) gained mixed solution.
(6) lime that water-quenched manganese slag aggregate step (2) obtained and step (3) obtain joins in step (5) gained mixed slurry and stirs 5 minutes, add aluminium powder afterwards and stir 30 seconds again, obtain the compound mixed, then the compound mixed is poured into rapidly in air-entrained concrete building block mould and get angry, in whipping process, Insulation is set, ensures that molding temperature when slip is built is at 40 DEG C.
(7) after having got angry, precuring 3 hours at 55 DEG C of temperature, size cuts idiosome on request subsequently.
(8) after having cut, air-entrained concrete building block mould is removed, and the air-entrained concrete building block cut is delivered to steam press maintenance in autoclave, steaming pressuring curing system is: intensification 2.5 is little reaches 1.25mpa up to normal atmosphere, constant temperature and pressure 6.5 hours, namely decrease temperature and pressure obtains unit weight 552kg/m to normal temperature and pressure in 2 hours again
3, ultimate compression strength is the gas concrete of 4.12MPa.
Claims (1)
1. utilize water-quenched manganese slag to prepare a method for high strength gas concrete as aggregate, it is characterized in that concrete steps are:
(1) raw material is prepared burden by weight: water-quenched manganese slag aggregate 40-60 part, cement 15 parts, 15 parts, lime, 3 parts, gypsum, silica sand 67 parts, aluminium powder 0.15 part, 1 part, sodium hydroxide, polycarboxylic acids dehydragent 0.6 part, and ratio of water to material is: 0.50-0.55;
(2) water-quenched manganese slag aggregate processing: the water-quenched manganese slag emitted with manganeseirom factory is raw material, obtains the fine particle of particle diameter at 0.4-0.9mm by water-quenched manganese slag by the screening of 0.9mm and 0.4mm square hole sieve, stores stand-by after being dried;
(3) silica sand is put into ball mill grinding to specific surface area 300-335m
2/ kg, lime at grinding of ball grinder to specific surface area 350-400m
2/ kg;
(4) sodium hydroxide and water reducer are added to the water to mix obtain mixed solution;
(5) silica sand cement, gypsum, step (3) obtained stirs and obtains mixed slurry in 3-5 minute together with after the mixing of step (4) gained mixed solution;
(6) lime that water-quenched manganese slag aggregate step (2) obtained and step (3) obtain joins in step (5) gained mixed slurry and stirs 5 minutes, add aluminium powder afterwards and stir 30 seconds again, obtain the compound mixed, then the compound mixed is poured into rapidly in air-entrained concrete building block mould and get angry, in whipping process, Insulation is set, ensures that molding temperature when slip is built is at 40-50 DEG C;
(7) after having got angry, precuring 3 hours at 55 DEG C of temperature, size cuts idiosome on request subsequently;
(8) after having cut, air-entrained concrete building block mould is removed, and the air-entrained concrete building block cut is delivered to steam press maintenance in autoclave, steaming pressuring curing system is: intensification 2.5 is little reaches 1.2-1.25mpa up to normal atmosphere, constant temperature and pressure 6.5 hours, namely decrease temperature and pressure obtains gas concrete to normal temperature and pressure in 2 hours again.
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| CN104556896A (en) * | 2014-12-19 | 2015-04-29 | 安徽中龙建材科技有限公司 | High-strength aerocrete building block and preparation method thereof |
| CN108516740B (en) * | 2018-04-25 | 2020-11-24 | 铜仁学院 | Concrete containing electrolytic manganese residues, preparation method thereof and concrete pavement |
| CN113248163A (en) * | 2021-05-19 | 2021-08-13 | 贵州大学 | Preparation method of electrolytic manganese slag phosphogypsum composite cementing material |
| CN113716931A (en) * | 2021-10-13 | 2021-11-30 | 辽宁工业大学 | Non-autoclaved silicomanganese slag aerated concrete thermal insulation building block and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698586A (en) * | 2009-11-06 | 2010-04-28 | 贵州省建筑材料科学研究设计院 | Aerated concrete produced by electrolytic manganese slag and preparation method thereof |
| CN101844905A (en) * | 2010-06-25 | 2010-09-29 | 贵州省建筑材料科学研究设计院 | High performance concrete with water quenching manganese slag and preparation method thereof |
| CN101864823A (en) * | 2010-06-10 | 2010-10-20 | 湖北声荣环保节能科技有限公司 | Aerated concrete building block produced by heavy metal-removed manganese carbonate tailing and manufacturing method thereof |
| CN102795883A (en) * | 2012-08-31 | 2012-11-28 | 刘桥兴 | High-strength aerated concrete building block produced by using electrolysis manganese residues and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698586A (en) * | 2009-11-06 | 2010-04-28 | 贵州省建筑材料科学研究设计院 | Aerated concrete produced by electrolytic manganese slag and preparation method thereof |
| CN101864823A (en) * | 2010-06-10 | 2010-10-20 | 湖北声荣环保节能科技有限公司 | Aerated concrete building block produced by heavy metal-removed manganese carbonate tailing and manufacturing method thereof |
| CN101844905A (en) * | 2010-06-25 | 2010-09-29 | 贵州省建筑材料科学研究设计院 | High performance concrete with water quenching manganese slag and preparation method thereof |
| CN102795883A (en) * | 2012-08-31 | 2012-11-28 | 刘桥兴 | High-strength aerated concrete building block produced by using electrolysis manganese residues and preparation method thereof |
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