CN102795883B - High-strength aerated concrete building block produced by using electrolysis manganese residues and preparation method thereof - Google Patents

High-strength aerated concrete building block produced by using electrolysis manganese residues and preparation method thereof Download PDF

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CN102795883B
CN102795883B CN201210321664.9A CN201210321664A CN102795883B CN 102795883 B CN102795883 B CN 102795883B CN 201210321664 A CN201210321664 A CN 201210321664A CN 102795883 B CN102795883 B CN 102795883B
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manganese residues
electrolytic manganese
water
building block
weight
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CN102795883A (en
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刘桥兴
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Huaihua Yonggu Energy Saving Wall Material Co., Ltd.
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刘桥兴
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a high-strength aerated concrete building block produced by using electrolysis manganese residues and a preparation method thereof. The building block is made of: (1) basic raw materials, (2) additives and (3) a solvent, wherein the basic raw materials include 48-58 percent by weight of electrolysis manganese residues, 20-30 percent by weight of silica sand, 5-10 percent by weight of cement and 15-25 percent by weight of quicklime; based on the total amount of the basic raw materials, the additives include 0.05-0.12 percent by weight of aluminum powder, 1-5 percent by weight of water glass, 0.005-0.01 percent by weight of sodium benzene sulfonate washing powder and 0.1-0.4 percent of an aid; the solvent is water; and the weight ratio of water to a water material of the basic raw materials is 0.6-0.7. The preparation method comprises the following steps of: pretreating the raw materials, and forcibly stirring according to a certain proportion as required to obtain slurry; and standing and performing steam curing with a still kettle to obtain a product. The aerated concrete building block produced with the method has the advantages of low volume weight, high strength, simple process, convenience in operating, freeness from pollution, high electrolysis manganese residue consumption and convenience in mechanical production.

Description

A kind of electrolytic manganese residues is produced High Strength Aerated Concrete building block and preparation method thereof
Technical field
The present invention relates to chemical industry preparation field, specifically a kind of electrolytic manganese residues that utilizes is produced air-entrained concrete building block and preparation method thereof, belongs to industrial solid waste reside comprehensive utilization technology.
Technical background
China is the world topmost manganese Metal Production state, and year manganese output reaches the more than 90% of Gross World Product, and the acquisition major part of its product is that (main effective constituent is MnCO by sulfuric acid chemical combination rhodochrosite 3) obtain that electrolytic solution manganous sulfate realizes by electrolysis, due to MnCO in China's manganese ore ore 3content is only in 20%, and in ore, other mineral constituent form with electrolytic manganese residues in combination reaction process is discharged.Generally speaking, the electrolytic manganese residues of 1 ton of electrolytic metal Mn average generation 7-10 ton left and right of every production, owing to lacking the means of effectively utilizing, these water ratio reach the electrolytic manganese residues of 40% left and right and all pile and have stockyard, the deslagging of stacking has year by year caused severe contamination to environment, main manifestations be a large amount of ammonia nitrogens of containing in electrolytic manganese residues, vitriol, heavy metal mn ion etc. near the pollution that slag field, atmosphere, water source, soil etc. cause, become the most important reason of restriction China electrolytic manganese industry development.Therefore a, difficult problem for electrolytic manganese residues recycling urgently to be resolved hurrily.For a long time, because China is inadequate to the attention degree of waste pollution environment in Industrial processes, in addition this inert material recycling of electrolytic manganese residues difficulty is larger, the harmlessness disposing of China's electrolytic manganese residues still faces a severe challenge, its recycling is almost blank, about the method for electrolytic manganese residues recycling still in the laboratory study stage.Mainly comprise: the starting material of 1) producing as ordinary Portland cement, mainly utilize electrolytic manganese residues to belong to the character of silicate material, or electrolytic manganese residues is considered as to industrial gypsum to be used as cement setting retarder, or use it for the agent of cement color adaptation.2) by electrolytic manganese residues for the production of extraordinary building cementing material.Thisly by mode, have the problems such as large such as raw material disposal difficulty, the performance of material property advantage is not obvious, limited its recycling, the recycling approach of China's electrolytic manganese residues is few, and research electrolytic manganese residues recycling is very important problem.
By the electrolytic manganese residues in China's famous " manganese triangle " area being carried out to chemical constitution and performance analysis, measure and know: radioactivity indication reaches national regulation requirement, and electrolytic manganese residues belongs to active very low acid slag.See the following form
The radioassay data of electrolytic manganese residues:
Project GB6566-2000 Measured value
Internal radiation index | re ≤1 0.2
External radiation exposure index | r ≤1 0.3
The Major Components of electrolytic manganese residues is as follows: (each component content %)
Sio 2 Cao Mgo Mno Fe 2o 3 Al 2o 3 Na 2o K 2o Other loss Add up to
32.6 11.9 1.1 4.2 12.1 5.8 0.2 0.6 On a small quantity 16.8 85.3
Therefore what utilize existing electrolytic manganese residues trade waste to prepare to produce high-strength novel autoclave aerated concrete building block is feasible.
Summary of the invention
Object of the present invention is just for above-mentioned problems, provide a kind of technique simple, easy to operate, do not pollute, electrolytic manganese residues consumption is large, formula for a product and the Technology of being convenient to mechanization production are produced high-strength novel autoclave aerated concrete building block.
The present invention's adopted technical scheme of dealing with problems is: a kind of electrolytic manganese residues is produced High Strength Aerated Concrete building block, and it is to be made by following raw material:
(1), basic raw material: electrolytic manganese residues 48%-58%, silica sand 20-30%, cement 5-10%, unslaked lime 15-25%, described per-cent is weight percentage;
(2), additive: in basic raw material 100%, the 0.5-1.2 ‰ that aluminium powder is basic raw material, water glass are that 1-5%, benzene sulfonic acid sodium salt class washing powder 0.05-0.1 ‰, auxiliary agent total amount are 0.1-0.4%, and described per-cent is weight percentage;
(3), solvent: solvent is water, and the water material weight ratio of water and basic raw material is 0.6-0.7.
Electrolytic manganese residues is produced a preparation method for High Strength Aerated Concrete building block, comprises the following steps:
1., electrolytic manganese residues pre-treatment: the calcium lime powder that accounts for blending in the electrolytic manganese residues of total amount 48%-58% and account for total amount 5%-8% is stirred, stand-by;
2., fine grinding: will be through pretreated electrolytic manganese residues and silica sand mixing fine grinding in described ratio, will be broken in the remaining unslaked lime of described ratio, pulverize, stand-by;
3., liquid material is prepared in advance: in the water that the sodium silicate dissolving of described ratio is added at needs, dilution makes;
4., spice: will add in the liquid material of having prepared water glass through aluminium powder, benzene sulfonic acid sodium salt class washing powder and the auxiliary agent described in the good manganese slag of fine grinding, silica sand and stand-by unslaked lime, cement, additive in described ratio, water material weight ratio is 0.6-0.7, all raw material mix to be forced to obtain slip after high-speed stirring, and slip is injected and sends into the chamber of the resting 1-2 hour that rests in framed;
5., vapor cure: treat after aluminium powder foaming size cutting base substrate on request, with being about to base substrate, put into autoclave vapor cure, the method for maintenance is: heat up and reach 1.25mpa, constant temperature and pressure 6 hours to normal atmosphere in 2.5 hours, decrease temperature and pressure gets product to normal temperature for 2.5 hours again.
Described auxiliary agent is caustic soda, three hydroxy-acetaldehydes and polyethylene alcohol aldehyde glue, all accounts for equivalent in auxiliary agent total amount.
Effective Cao content of described unslaked lime is 70%-80%, and dissolution rate is 8-12 minute, and solvent temperature is 60-80 degree Celsius.
The Sio of described silica sand 2content is greater than 95%, and silt content is lower than 3%.
The water area that covers of described aluminium powder is greater than 5000cm 2/ g.
Silica sand in the present invention is mainly the silicon content improving in manganese slag, gains in strength; With the starting material such as cement, lime and additive the intensity in the early stage and later stage of product is provided, lime is as overbased materials, can solidify many metallic elements remaining in electrolytic manganese residues, decontamination, again can with electrolytic manganese residues in many materials and silicon-dioxide etc. there is the intensity that chemical reaction increases product, especially in the electrolytic manganese residues after lime activates, each component is easily more cementing by materials such as cement auxiliary agents, and its effect is greatly brought into play, and the intensity of product is improved; The foam that aluminium powder foaming produces generates a large amount of spaces in concrete, reduces product density, realizes the object of lightweight; Water glass is that electrolytic manganese residues is made the active initiator of gelling material and the toughener of silicate concrete intensity, the water glass of adding can make abscess concrete around solidify in advance and discharge unnecessary moisture content, contribute to the raising of product strength, the disadvantageous effects such as excessive slow setting because dihydrate gypsum amount causes too much in electrolytic manganese residues can also be suitably eliminated in adding of water glass etc.The air-entrained concrete building block unit weight that utilizes present method to produce is low, and intensity is large, and cost is low, lower than the cost (referring to following table) of coal ash autoclaved Aerated Concrete.
Electrolytic manganese residues and the contrast of fly-ash steaming pressing aero-concrete technical indicator:
Embodiment
Specifically describe embodiments of the invention formula and production process below.
Formula 1: design unit weight is 400kg/m 3, mould volume is V=3.024m 3(length 1.2mx4.2mx0.6m), conducts oneself with dignity for 3.024m 3x400kg/m 3the autoclave aerated concrete building block of=1210kg.By proportioning provided by the present invention, the quantity of each component of raw material is as follows:
Electrolytic manganese residues 48%: heavy 580kg; Silica sand 20%: heavy 242kg; Cement 7%: heavy 85kg; Unslaked lime 25%:303kg; Aluminium powder 0.92 ‰:: heavy 1.11kg; Benzene sulfonic acid sodium salt class washing powder: 0.09 ‰: heavy 108.9g; Auxiliary agent 0.2%: heavy 2.42kg (caustic soda, three hydroxy-acetaldehydes and each 0.807kg of polyethylene alcohol aldehyde glue); Water glass 2%: heavy 24kg; Water: 726kg.
Formula 2: design unit weight is 600kg/m 3, mould volume is V=3.024m 3(length 1.2mx4.2mx0.6m), conducts oneself with dignity for 3.024m 3x600kg/m 3the autoclave aerated concrete building block of=1815kg.By proportioning provided by the present invention, the quantity of each component of raw material is as follows:
Electrolytic manganese residues 50%: heavy 908kg; Silica sand 20%: heavy 363kg; Cement 5%: heavy 91kg; Unslaked lime 25%:453kg; Aluminium powder 0.6 ‰: heavy 1.089kg; Benzene sulfonic acid sodium salt class washing powder: 0.09 ‰: heavy 163g; Auxiliary agent 0.2%: heavy 3.63kg (caustic soda, three hydroxy-acetaldehydes and each 1.21kg of polyethylene alcohol aldehyde glue mix); Water glass 1.3%: heavy 24kg; Water: 1180kg.
Electrolytic manganese residues is produced the preparation method of High Strength Aerated Concrete building block, comprises the following steps, and take and fills a prescription 2 as example:
1., electrolytic manganese residues pre-treatment: the calcium lime powder of admixing 8%145.2kg in 908kg electrolytic manganese residues is stirred stand-by.
2., fine grinding: through in pretreated electrolytic manganese residues, carry out fine grinding by the silica sand of formula 2 interpolation 363kg, fineness is 70 orders; By after unslaked lime fragmentation, to grind, fineness is 100 orders, sends in lime bin stand-by.
3., liquid material is prepared in advance: the water glass of 24kg is dissolved in advance to dilution in the water that need to add and makes, according to water material weight ratio, determine the water yield, water yield 1180kg.
4., spice: by formula 2 by the manganese slag after calcium lime powder, cement, fine grinding and silica sand, aluminium powder, benzene sulfonic acid sodium salt class washing powder and auxiliary agent add in the liquid material of water glass, water material weight ratio is 0.65, after mixing action of forced stirring, obtain slip, slip is injected and sends into the chamber of the resting 1-2 hour that rests in framed.
5., vapor cure: treat after aluminium powder foaming size cutting base substrate on request, with being about to base substrate, put into autoclave vapor cure, the method for maintenance is: heat up and reach 1.25mpa, constant temperature and pressure 6 hours to normal atmosphere in 2.5 hours, decrease temperature and pressure gets product to normal temperature for 2.5 hours again.
The a small amount of cement using in the present invention mainly provides early strength in raw material; Unslaked lime is mainly as calcareous material, under wet heat condition can with electrolytic manganese residues in quartz reaction generate hydrated calcium silicate gel, intensity is also provided; Electrolytic manganese residues substitutes the flyash in traditional Aerated Concrete production, and in electrolytic manganese residues, contained dihydrate gypsum plays the effect of controlling and delaying lime digestion, and all the other are as stopping composition; Aluminium powder is as whipping agent, itself and H 2o reacts releasing hydrogen gas, thereby in a large amount of spaces of the inner generation of goods, reduces density, realizes the object of Aerated Concrete.
The present invention takes full advantage of the Chemical Composition comprising in electrolytic manganese residues: silicon-dioxide and dihydrate gypsum; Silicon-dioxide participates in chemical reaction in making product process, and the flyash that electrolytic manganese residues can be substituted in traditional Aerated Concrete production is used, and dihydrate gypsum plays control place and delays the effect that unslaked lime is cleared up.The quality product of using this formula to obtain, particularly product strength meet GB requirement; Use this formula to reach to disappear object useless, that profit is useless.
The main raw material(s) of selecting in the present invention: unslaked lime should meet the regulation of JC/T479-1992, cement should meet the regulation of GB175, and water glass should meet the regulation of GB/T4209-1996, and the auxiliary agents such as cement blowing agent also should meet national relevant regulations.

Claims (4)

1. electrolytic manganese residues is produced a preparation method for High Strength Aerated Concrete building block, and described High Strength Aerated Concrete building block is to be made by following raw material:
(1), basic raw material: electrolytic manganese residues 48%-58%, silica sand 20-30%, cement 5-10%, unslaked lime 15-25%, described per-cent is weight percentage;
(2), additive: in basic raw material 100%, the 0.5-1.2 ‰ that aluminium powder is basic raw material, water glass are that 1-5%, benzene sulfonic acid sodium salt class washing powder are that 0.05-0.1 ‰, auxiliary agent total amount are 0.1-0.4%, and described per-cent is weight percentage;
(3), solvent: solvent is water, and the water material weight ratio of water and basic raw material is 0.6-0.7;
Described preparation method is characterized in that, it comprises the following steps:
1., electrolytic manganese residues pre-treatment: the calcium lime powder that accounts for blending in the electrolytic manganese residues of total amount 48%-58% and account for total amount 5%-8% is stirred, stand-by;
2., fine grinding: will be through pretreated electrolytic manganese residues and silica sand mixing fine grinding in described ratio, will be broken in the remaining unslaked lime of described ratio, pulverize, stand-by;
3., liquid material is prepared in advance: in the water that the sodium silicate dissolving of described ratio is added at needs, dilution makes;
4., spice: will add in the liquid material of having prepared water glass through aluminium powder, benzene sulfonic acid sodium salt class washing powder and the auxiliary agent described in the good manganese slag of fine grinding, silica sand and stand-by unslaked lime, cement, additive in described ratio, water material weight ratio is 0.6-0.7, all raw material mix to be forced to obtain slip after high-speed stirring, and slip is injected and sends into the chamber of the resting 1-2 hour that rests in framed;
Described auxiliary agent is caustic soda, three hydroxy-acetaldehydes and polyethylene alcohol aldehyde glue, all accounts for equivalent in auxiliary agent total amount;
5., vapor cure: treat after aluminium powder foaming size cutting base substrate on request, with being about to base substrate, put into autoclave vapor cure, the method for maintenance is: heat up and reach 1.25mpa, constant temperature and pressure 6 hours to normal atmosphere in 2.5 hours, decrease temperature and pressure gets product to normal temperature for 2.5 hours again.
2. electrolytic manganese residues according to claim 1 is produced the preparation method of High Strength Aerated Concrete building block, it is characterized in that: the effective CaO content of described unslaked lime is 70%-80%, and dissolution rate is 8-12 minute, and solvent temperature is 60-80 degree Celsius.
3. electrolytic manganese residues according to claim 1 is produced the preparation method of High Strength Aerated Concrete building block, it is characterized in that: the SiO of described silica sand 2content is greater than 95%, and silt content is lower than 3%.
4. electrolytic manganese residues according to claim 1 is produced the preparation method of High Strength Aerated Concrete building block, it is characterized in that: the water area that covers of described aluminium powder is greater than 5000cm 2/ g.
CN201210321664.9A 2012-08-31 2012-08-31 High-strength aerated concrete building block produced by using electrolysis manganese residues and preparation method thereof Active CN102795883B (en)

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CN103253920A (en) * 2013-06-09 2013-08-21 赣州腾远钴业有限公司 Method for preparing concrete block by utilizing wet smelting leached waste residues of cobalt
CN103992070A (en) * 2014-05-05 2014-08-20 松桃鼎进新型材料有限公司 Preparing process of electrolytic manganese residue autoclaved brick
CN103979997B (en) * 2014-05-07 2015-09-23 桂林理工大学 A kind of water-quenched manganese slag that utilizes prepares the method for high strength gas concrete as aggregate
CN104072036B (en) * 2014-05-29 2016-03-23 蚌埠华东石膏有限公司 A kind of containing electrolytic manganese residues concrete and preparation method thereof
CN105599110B (en) * 2015-12-23 2018-05-04 广西大学 The method that non-autoclaved and unburned manganese slag brick is prepared using manganese ore acid-soaked waste residue
CN108129161A (en) * 2018-02-02 2018-06-08 曲水标威新型建材有限公司 Composite aerated brick and preparation method
CN110981386A (en) * 2019-11-28 2020-04-10 湖南绿生科技发展有限公司 Aerated concrete block produced from vanadium smelting slag and preparation method thereof

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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
KR101099074B1 (en) * 2011-07-04 2011-12-27 주식회사 제트콘코리아 Concrete constitution
CN102584139A (en) * 2012-01-18 2012-07-18 中国铁道科学研究院金属及化学研究所 Self-densifying concrete as well as preparation method and application thereof

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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
KR101099074B1 (en) * 2011-07-04 2011-12-27 주식회사 제트콘코리아 Concrete constitution
CN102584139A (en) * 2012-01-18 2012-07-18 中国铁道科学研究院金属及化学研究所 Self-densifying concrete as well as preparation method and application thereof

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