CN103193441A - Method for preparing slag steam-cured brick - Google Patents
Method for preparing slag steam-cured brick Download PDFInfo
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- CN103193441A CN103193441A CN2013101490200A CN201310149020A CN103193441A CN 103193441 A CN103193441 A CN 103193441A CN 2013101490200 A CN2013101490200 A CN 2013101490200A CN 201310149020 A CN201310149020 A CN 201310149020A CN 103193441 A CN103193441 A CN 103193441A
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- 239000011449 brick Substances 0.000 title claims abstract description 78
- 239000002893 slag Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 37
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000011572 manganese Substances 0.000 claims abstract description 50
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 49
- 239000000203 mixture Substances 0.000 claims abstract description 34
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000465 moulding Methods 0.000 claims abstract description 21
- 239000004568 cement Substances 0.000 claims abstract description 17
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 15
- 239000000292 calcium oxide Substances 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 150000001875 compounds Chemical class 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 claims description 14
- 239000004576 sand Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 8
- 239000011398 Portland cement Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000002386 leaching Methods 0.000 abstract 3
- 239000002002 slurry Substances 0.000 abstract 2
- 239000012615 aggregate Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 22
- 230000006835 compression Effects 0.000 description 17
- 238000007906 compression Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 16
- 238000012423 maintenance Methods 0.000 description 12
- 239000002699 waste material Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 238000006703 hydration reaction Methods 0.000 description 8
- 239000004566 building material Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000748 compression moulding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 239000011396 hydraulic cement Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 102000003712 Complement factor B Human genes 0.000 description 1
- 108090000056 Complement factor B Proteins 0.000 description 1
- 108060003393 Granulin Proteins 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 102000017941 granulin Human genes 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- YIEDSISPYKQADU-UHFFFAOYSA-N n-acetyl-n-[2-methyl-4-[(2-methylphenyl)diazenyl]phenyl]acetamide Chemical compound C1=C(C)C(N(C(C)=O)C(=O)C)=CC=C1N=NC1=CC=CC=C1C YIEDSISPYKQADU-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Images
Classifications
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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
Abstract
The invention discloses a method for preparing a slag steam-cured brick. The method comprises the following steps of adding quick lime to acid-leaching manganese slag according to a ratio, and carrying out pretreatment on the acid-leaching manganese slag; mixing the preprocessed acid-leaching manganese slag, cement and aggregate according to a certain ratio to obtain a mixture; adding water to the final mixture according to a certain water-solid ratio; agitating to obtain a slurry mixture; putting the slurry mixture into a home-made die to primarily mold; vertically pressurizing and molding the primarily molded brick by an electric oil press pressure head from top to bottom; obtaining a high-strength brick after pressurizing for a period of time; putting the high-strength brick into a constant-temperature water bath pan to carry out steam curing after a period of time; controlling the heating speed, and keeping the constant temperature for a period of time when certain temperature is achieved; taking out the steam-cured brick and putting in a room temperature environment; and naturally maintaining for 28 days by watering normal-temperature moisture measures to obtain the baking-free slag brick.
Description
Technical field
The present invention relates to a kind of preparation method of brick, be specially a kind of preparation method of slag steamed brick.
Background technology
Most of country remains with sintered clay brick as topmost materials for wall in the world at present, and in developing country, clay brick accounts for the ratio of materials for wall just up to more than 70%.The whole world pressure build-up aspect the energy shortage and the raising of public's environmental consciousness occur in building trade, and the material of construction manufacturer has been brought very big pressure.Because national governments constantly put into effect new policy and legislation, energy service limits and the CO2 emissions of regulation buildings.The wall body building material common brick that China is traditional, big with soil amount, fire 1,000,000 and will destroy one mu of soil, for the such country populous, that cultivated land resource is limited of China, protect and to save each cun field significant.So, to the demand of unburned masonry panel brick show stronger.
Simultaneously as the main producing country of world's manganese deep processed product, nearly 1,000,000 tons of China recent years electrolytic manganese output, present situation is that waste residue is not much accounted of, but thrown away in vain as waste, simply with its stacking, its stacking takies a large amount of land resourcess, increases enterprise's disposal costs; Secondly, electrolytic manganese residues contains a certain amount of harmful element, lets alone discharging with serious environment pollution.So, manganese mud is used for making the non-burning brick manganese mud that makes obtains rationally, effectively utilizing this technical barrier to highlight further.It is non-burning brick for raw material production that at present existing related personnel utilizes industrial residue such as slag, but the product effect is not very desirable, and quality problems are more serious, mainly show: 1. the freezing and thawing test problem is the most outstanding; 2. the ultimate compression strength problem is serious; 3. the water-intake rate problem can not be ignored; 4. poor durability, easily aging; 5. in the production process of reality, a lot of enterprises has reduced the pressure in the high-pressure process, and the non-burning brick intensity of making like this can reduce, and reaches people's target like this with regard to the intensity that is difficult to make brick, and the brick of making also is easily damaged; 6. in selection, though the non-burning brick industrial waste of only having used, control and management proportion of raw materials are unreasonable, and then can't improve the intensity of brick; 7. aspect maintenance, though the maintenance under normal pressure is better than the maintenance under the natural condition, the product of making, its quality but is difficult to obtain real raising.
Summary of the invention
At the shortcoming of above-mentioned prior art, the invention provides that a kind of technology is simple with low costly to be utilized manganese mud to add steam oxidation to prepare non-burning brick method.
The present invention solves the problems of the technologies described above by the following technical solutions: a kind of preparation method of slag steamed brick, and it adopts the following step:
(1) in the acidleach manganese mud, adds unslaked lime in proportion, the acidleach manganese mud is carried out pre-treatment;
(2) obtain mixture after will mixing by a certain percentage through pretreated acidleach manganese mud, cement and aggregate;
(3) add water in described mixture by certain water-solid ratio, and stir, obtain the muddy compound;
(4) described muddy compound is put into from the first one-step forming of molding jig, the vertical extrusion forming of single face from top to bottom of electric oil pressure compressing head is adopted in the adobe of first one-step forming, and obtained the high strength adobe after pressurize for some time;
(5) carry out steam curing with putting into thermostat water bath after described high strength adobe placement for some time, the control heat-up rate keeps constant temperature for some time when arriving certain temperature;
(6) will take out through the brick of steam curing, and place room temperature environment, the normal temperature moist keeping measures of taking to sprinkle water carries out natural curing, and to obtain slag in 28 days non-burning brick.
Further, the ratio of unslaked lime and acidleach manganese mud is 1:3~5 in the step (1).
Further, aggregate described in the step (2) is through natural river sand after the 20 mesh sieves sieve.
Further, cement is ordinary Portland cement described in the step (2).
Further, cement described in the step (2) and the pretreated acidleach manganese slag blending ratio of process are 1:3.5~8.
Further, the mass ratio that mixes with river sand through the quality summation of pretreated acidleach manganese mud and cement is 1:0.67~1.2.
Further, water-solid ratio is 2.5~3.5:10 described in the step (3).
As preferably, step is pressurised into 20~40MPa described in (4), and the dwell time is 90 seconds.
As preferably, heat-up rate described in the step (5) is 10 ℃ of per minutes, and described certain temperature is 100 ℃~120 ℃, and described for some time is 7~9 hours.
As preferably, be the non-burning brick mould of a kind of preparation slag from molding jig described in the step (4), comprise top plate, framework and lower bolster, described lower bolster is provided with screw rod, top plate is provided with pressure transmitter, one nut is pressed on non-burning brick raw material in the space that top plate, framework and lower bolster surround by screwing on passing the described screw rod of top plate and pressure transmitter, described pressure transmitter with pressure signal transmission to controller, controller is according to the screwing length of signal control nut and screw rod, and described lower bolster is provided with the square protruding block.
The present invention compared with prior art has following advantage: one, preparation is for building non-burning brick, abandoned traditional high-temperature roasting technology, not only avoided sulphur to second environmental pollution, reduce CO2 emissions, and protect farmland, avoid ruining the field, save energy, cut down the consumption of energy, significant for so populous, the country that cultivated land resource is limited of China; Two, be that raw material has not only solved manganese ore processing enterprise and produces in process of production and a large amount of contain manganese waste slag because directly slag being stacked with acidleach manganese ore waste residue, when taking a large amount of land resources, also environment has been caused the refractory reason problem of destroying, and turn waste into wealth, be enterprise and society's creation economic worth; Three, the adding of unslaked lime can with manganese mud in moisture react rapidly and emit a large amount of heat, remove too much moisture and can destroy its original colloidal, reach the effect of dispersion; Four, it is finer and closely woven to adopt ordinary Portland cement that brick is organized, and intensity is higher; Five, not only industrial application is simple but also Financial cost is low to adopt natural river sand to serve as aggregate; Six, suitable ratio of components is of value to important effect such as non-burning brick moulding, intensity increase; Seven, suitable pressure and time length discharge in order to compressed air and continuation displacement, the changing of the relative positions and the filling space of material particle increase viscous deformation, the physics chemical action of having demonstrate,proved between the material particles can efficiently be carried out, for the formation of later strength provides condition; Eight, adopt steam curing, moisture content in the adobe is sloughed, particle in the adobe is close to mutually, Tuo Shui process can be avoided causing thermal expansion to damage adobe owing to the rapid evaporation of moisture content like this, in addition, in the steam curing process, temperature raises gradually, can generate materials such as vitriol in the adobe, thereby increase the intensity of adobe; Nine, adopt from the preliminary moulding of molding jig, can make the long-time constant voltage compacting of slip, just the position, corner of the adobe of one-step forming is solid, being conducive to follow-up high strength compacting significantly improves its ultimate compression strength, simultaneously when the later stage maintenance, be conducive to accelerate the speed of hydration reaction, generate more hydrated product, and improve the degree of crystallinity of hydrated product, the quality of brick is further enhanced.
Description of drawings
Fig. 1 is process flow diagram of the present invention;
Fig. 2 is that the present invention is from the structural representation of molding jig;
Fig. 3 is that forming pressure of the present invention is to the figure that influences of non-burning brick ultimate compression strength;
Fig. 4 is that steam curing temperature of the present invention is to the figure that influences of non-burning brick intensity;
Fig. 5 is that the steam curing time of the present invention is to the figure that influences of non-burning brick intensity.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram and embodiment, further set forth the present invention.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
With reference to figure 1, the preparation method of a kind of slag steamed brick of the present invention, it adopts the following step: add unslaked lime in proportion in the acidleach manganese mud, the acidleach manganese mud is carried out pre-treatment; Obtain mixture after will mixing by a certain percentage through pretreated acidleach manganese mud, cement and aggregate; Add water in described final mixture by certain water-solid ratio, and stir, obtain the muddy compound; Described muddy compound is put into from the first one-step forming of molding jig, the vertical extrusion forming of single face from top to bottom of electric oil pressure compressing head is adopted in the adobe of first one-step forming, and obtained the high strength adobe after pressurize for some time; Carry out steam curing with putting into thermostat water bath after described high strength adobe placement for some time, the control heat-up rate keeps constant temperature for some time when arriving certain temperature; To take out through the brick of steam curing, and place room temperature environment, the normal temperature moist keeping measures of taking to sprinkle water carries out natural curing, and to obtain slag in 28 days non-burning brick.
With reference to figure 2, the present invention adopt from molding jig, comprise top plate 1, framework 2 and lower bolster 3, described lower bolster 3 is provided with screw rod 31, top plate is provided with pressure transmitter 12, one nut 11 is pressed on non-burning brick raw material in the space that top plate, framework and lower bolster surround by screwing on passing the described screw rod of top plate and pressure transmitter, and to controller 4, controller is according to the screwing length of signal control nut and screw rod with pressure signal transmission for described pressure transmitter 12.When adding slip in the mould, because lower bolster is provided with the square protruding block, make slip mold the hollow of correspondence, nut is pressed on top plate by screwing passing on the described screw rod of top plate and pressure transmitter with non-burning brick slip, in the space that framework and lower bolster surround, described pressure transmitter with pressure signal transmission to controller, configure the less force value of expection earlier at controller, controller is according to the screwing length of signal control nut and screw rod, pressure boost, make slip to flowing all around, fill full mould, make slip finer and close, when controller receives the less force value of pressure signal and expection when identical, controller control nut stops to screw, just can keep for a long time the constant voltage of slip being suppressed, be conducive to the better first one-step forming of adobe, lay the foundation for finally making qualified adobe, be conducive to the follow-up high pressure compacting of adobe and increase ultimate compression strength, be conducive to maintenance and accelerate the speed of hydration reaction, generate more hydrated product, and improve the degree of crystallinity of hydrated product, it is higher strong that goods are had at short notice.
Experiment 1. design orthogonal experiment schemes are sought optimum mix:
In order to determine that acidleach manganese slag prepares the optimum mix of non-burning brick raw material, presses L
16(4
3) orthogonal table carry out orthogonal test, and determine factor and level according to the basic test result.Because there is interactional effect to a certain extent in each raw material, this design is reference to add acidleach manganese slag 4kg.
Factor A is aggregate, its horizontal A
1=3kg, A
2=4.2kg, A
3=6.6kg, A
4=7kg;
Factor B is cement, its horizontal B
1=1.8kg, B
2=1.4kg, B
3=0.7kg, B
4=0.5kg;
Factor C is unslaked lime, its horizontal C
1=1.4kg, C
2=1kg, C
3=0.8kg, C
4=0.6kg;
The test arrangement of orthogonal table and test-results see Table 1 and table 2:
Table 1 orthogonal design level of factor
Table 2 orthogonal test scheme and result
Each factor ultimate compression strength numerical value sum under I behavior 1 level; The next factor ultimate compression strength of II behavior 2 levels sum; Each factor ultimate compression strength numerical value sum under III behavior 3 levels; Each factor ultimate compression strength sum under VI behavior 4 levels; R is extreme difference, represents the size that influences of each factor pair index.
Non-burning brick GB(5348 according to the national building materials GB) can to get the mass ratio of unslaked lime and acidleach manganese mud be 1:3~5 for standard and orthogonal experiment, cement and the pretreated acidleach manganese slag mixing quality ratio of process are 1:3.5~8, the mass ratio that acidleach manganese mud and cement quality summation are mixed with river sand is 1:0.67~1.2, and obtaining described water-solid ratio through experiment simultaneously is 2.5~3.5:10.
Testing 2. forming pressures tests the influence of non-burning brick intensity:
The early strength of acidleach manganese mud obtains in adobe pressure forming process, moulding not only makes adobe have certain intensity, simultaneously because closely contact between the starting material particle, guaranteed that the physics chemical action between the material particles can efficiently carry out, for the formation of later strength provides condition.What adopt in the non-burning brick production of the present invention is the moulding of electric oil pressure machine, and the size of the pressure of moulding and supercharging and the speed of moving back pressure are directly by manual control.Generally speaking, when other conditions were identical, the more high non-burning brick ultimate compression strength of forming pressure was also along with growth.The results showed, adopt the non-burning brick standard that can both satisfy ultimate compression strength of the forming pressure preparation of 20~40MPa.And continue to increase forming pressure, and the raising of intensity is not fairly obvious, sets out according to real industrial condition and production economic benefit, the forming pressure of sample also can not unlimited increase.Therefore, under the prerequisite that guarantees sample intensity, can select the forming pressure of 30MPa for use.The size of forming pressure is seen Fig. 3 to the influence of non-burning brick ultimate compression strength.
Testing 3. steam curing temperature and times tests the influence of non-burning brick intensity:
In the non-burning brick process of preparation, hydration is very important reaction, because the hydrate that aquation produces can influence the intensity of brick.Yet in hydration process, temperature plays a part very big, can be got by experiment, and non-burning brick intensity is directly proportional with temperature, and therefore, it is particularly important that temperature controlling also shows when maintenance.With reference to figure 4, after temperature surpassed 100 ℃, it is very slow that the increase of intensity will become, therefore, comprehensive many-sided consideration, the optimal temperature control of maintenance is at 100 ℃~120 ℃.
After obtaining maintenance method and temperature, last important factor is exactly the steam-cured time.Generally, the steam-cured time is more long, and non-burning brick intensity also can be more big thereupon, yet along with the increase of time, the increasing degree of intensity also can decrease, and with reference to figure 5, proves according to experimental result, and steam-cured Best Times is 7~9 hours.Overlong time, the content of alkali can reduce in the hydration process, and hydration reaction can be slack-off thereupon, finally stops, and influences the quality of brick.
Embodiment 1:
Take by weighing 3kg acidleach manganese ore waste residue, add 1kg unslaked lime in the manganese ore waste residue, the ratio of unslaked lime and acidleach manganese mud is 1:3, owing to acidleach manganese ore waste residue water ratio reaches about 34.10% and be slightly acidic, contain a small amount of MnSO
4(NH
4)
2SO
4, add certain amount of calcined lime it is carried out pre-treatment, can obtain alkaline environment and solidify residual Mn
2+Ion is eliminated NH in the goods process simultaneously
4+Release to the influence of environment, in the pretreated acidleach manganese slag of process, add ordinary Portland cement 1.4kg, cement and the pretreated acidleach manganese slag blending ratio of process are 1:3.5, mix and obtain preliminary mixture, consider industrial application and Financial cost, add through natural river sand 3.6kg is as aggregate after the 20 mesh sieves sieve, aggregate plays skeleton and filling effect in tile product again, and aggregate grain composition preferably can produce higher processability with suitable addition.Aggregate mix the grain composition that can improve compound, reduce and shrink, improve non-burning brick intensity and endurance quality, preliminary mixture and aggregate blending ratio are 1:0.67, mix and obtain final mixture, in described final mixture, add water 2.3kg for the ratio of 10:2.5 in the solid water ratio, fully stir again and obtain the muddy compound, the amount that adds water is excessive or too small all unfavorable to product performance, the water ratio of material directly has influence on its compression moulding performance, moisture in the mixture in the out-of-date effect of going back super fatting agent of moulding, can make the particle in the compound be easy under pressure move and rearrange except participating in chemical reaction, so certain water ratio is favourable to moulding, when the water ratio of material is higher than certain value, easy sticking to mould in the compression moulding process, and be lower than appropriate value when the water ratio of material, be difficult to obtain closely knit base substrate again, the base substrate material moisture is inhomogeneous, local cross wet or overdrying occur, and is also very big to the quality influence of compression moulding base substrate.Described muddy compound is put into from the first one-step forming of molding jig, adopt the electric oil pressure compressing head vertically to pressurize again the adobe of first one-step forming, single face pressurization 20MPa from top to bottom, pressurize obtains the high strength adobe after 90 seconds, be that the dispersed solids particle is pushed away it closely to greatest extent by external force on the process nature of compression moulding, and by containing the surface of certain moisture and other binding agents, make between material particles and can form certain bonding (molecular linkage, hydrogen bond), closely knit filling between the material, the physics interlock, tight contact action and make adobe produce force of cohesion between granulin molecule, the liquid tension of the interlock of particle room machine and the effect of adobe inner capillary tube net has also had certain intensity, for making high-quality adobe, pressing speed should be fast slightly early stage in compacting, later stage is slow, generally speaking should be slowly steady, after pressure reaches the maximum of regulation, constant voltage for some time, remove external force again, in order to the continuation displacement of compressed air discharge and material particle, the changing of the relative positions and filling space increase viscous deformation.Carry out steam curing with putting into thermostat water bath after described adobe placement for some time, the control heat-up rate, heat-up rate is 10 ℃ of per minutes, when arriving 100 ℃, stop to heat up and kept constant temperature 7 hours, to take out through the brick of steam curing, place room temperature environment, carrying out natural curing at the basic normal temperature moist keeping measures of the indoor employing of natural ventilation watering maintenance, to obtain slag in 28 days non-burning brick, what the present invention adopted is steam curing, and the moisture content in the adobe is sloughed, and the particle in the adobe is close to mutually, Tuo Shui process can be avoided causing thermal expansion to damage adobe owing to the rapid evaporation of moisture content like this, in addition, in the steam curing process, temperature raises gradually, can generate materials such as vitriol in the adobe, thereby increase the intensity of adobe.The purpose of maintenance is to make the brick body accelerate the speed of hydration reaction under certain damp and hot condition, generates more hydrated product, and improves the degree of crystallinity of hydrated product, makes goods have higher intensity at short notice.Non-burning brick after moulding, progressively sclerosis and through its internal structure of back formation after a while makes the adobe of closely knit moulding can normally finish the hydration reaction of gelling material such as cement, obtains required mechanical property and durability index.The slag that obtains is non-burning brick with reference to GB/T17671-1999 " Test method for strength of hydraulic cement mortar " test sample ultimate compression strength, recording ultimate compression strength is 17.42MPa, according to the non-burning brick GB(5348 of national building materials GB) standard as can be known the non-burning brick strength grade of slag of the present invention preparation surpassed the standard of national non-burning brick MU15 level.
Embodiment 2:
Take by weighing 4kg acidleach manganese ore waste residue, in the manganese ore waste residue, add 1kg unslaked lime, the ratio of unslaked lime and acidleach manganese mud is 1:4, in the pretreated acidleach manganese slag of process, add ordinary Portland cement 0.8kg, cement and the pretreated acidleach manganese slag blending ratio of process are 1:6, mix and obtain preliminary mixture, add again through natural river sand 5.2kg after the 20 mesh sieves sieve as aggregate, the ratio of preliminary mixture and aggregate is 1:0.9, mix and obtain final mixture, in described final mixture, add water 3.3kg for the ratio of 10:3 in the solid water ratio, fully stir again and obtain the muddy compound, described muddy compound is put into from the first one-step forming of molding jig, adopt the electric oil pressure compressing head vertically to pressurize again the adobe of first one-step forming, single face pressurization 30MPa from top to bottom, pressurize obtains the high strength adobe after 90 seconds, carry out steam curing with putting into thermostat water bath after described adobe placement for some time, the control heat-up rate, heat-up rate is 10 ℃ of per minutes, when arriving 110 ℃, stop to heat up and kept constant temperature 8 hours, to take out through the brick of steam curing, place room temperature environment, carrying out natural curing at the basic normal temperature moist keeping measures of the indoor employing watering maintenance of natural ventilation, to obtain slag in 28 days non-burning brick.The slag that obtains is non-burning brick with reference to GB/T17671-1999 " Test method for strength of hydraulic cement mortar " test sample ultimate compression strength, recording ultimate compression strength is 18.95MPa, according to the non-burning brick GB(5348 of national building materials GB) standard as can be known the non-burning brick strength grade of slag of the present invention preparation surpassed the standard of national non-burning brick MU15 level.
Embodiment 3:
Take by weighing 4kg acidleach manganese ore waste residue, in the manganese ore waste residue, add 0.8kg unslaked lime, the ratio of unslaked lime and acidleach manganese mud is 1:5, in the pretreated acidleach manganese slag of process, add ordinary Portland cement 0.6kg, cement and the pretreated acidleach manganese slag blending ratio of process are 1:8, mix and obtain preliminary mixture, add again through natural river sand 6.5kg after the 20 mesh sieves sieve as aggregate, the ratio of preliminary mixture and aggregate is 1:1.2, mix and obtain final mixture, in described final mixture, add water 4.2kg for the ratio of 10:3.5 in the solid water ratio, fully stir again and obtain the muddy compound, described muddy compound is put into from the first one-step forming of molding jig, adopt the electric oil pressure compressing head vertically to pressurize the adobe of first one-step forming, single face pressurization 40MPa from top to bottom, pressurize obtains the high strength adobe after 90 seconds, carry out steam curing with putting into thermostat water bath after described adobe placement for some time, the control heat-up rate, heat-up rate is 10 ℃ of per minutes, when arriving 120 ℃, stop to heat up and kept constant temperature 9 hours, to take out through the brick of steam curing, place room temperature environment, carrying out natural curing at the basic normal temperature moist keeping measures of the indoor employing watering maintenance of natural ventilation, to obtain slag in 28 days non-burning brick.The slag that obtains is non-burning brick with reference to GB/T17671-1999 " Test method for strength of hydraulic cement mortar " test sample ultimate compression strength, recording ultimate compression strength is 19.88MPa, according to the non-burning brick GB(5348 of national building materials GB) standard as can be known the non-burning brick strength grade of slag of the present invention preparation surpassed the standard of national non-burning brick MU15 level.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention; the technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. the preparation method of a slag steamed brick, it adopts the following step:
(1) in the acidleach manganese mud, adds unslaked lime in proportion, the acidleach manganese mud is carried out pre-treatment;
(2) obtain mixture after will mixing by a certain percentage through pretreated acidleach manganese mud, cement and aggregate;
(3) add water in described mixture by certain water-solid ratio, and stir, obtain the muddy compound;
(4) described muddy compound is put into from the first one-step forming of molding jig, the vertical extrusion forming of single face from top to bottom of electric oil pressure compressing head is adopted in the adobe of first one-step forming, and obtained the high strength adobe after pressurize for some time;
(5) carry out steam curing with putting into thermostat water bath after described high strength adobe placement for some time, the control heat-up rate keeps constant temperature for some time when arriving certain temperature;
(6) will take out through the brick of steam curing, and place room temperature environment, the normal temperature moist keeping measures of taking to sprinkle water carries out natural curing, and to obtain slag in 28 days non-burning brick.
2. method according to claim 1 is characterized in that: the ratio of unslaked lime and acidleach manganese mud is 1:3~5 in the step (1).
3. method according to claim 1 is characterized in that: aggregate described in the step (2) is for through natural river sand after the 20 mesh sieves sieve.
4. method according to claim 1, it is characterized in that: cement is ordinary Portland cement described in the step (2).
5. method according to claim 1 is characterized in that: cement described in the step (2) and be 1:3.5~8 through pretreated acidleach manganese slag blending ratio.
6. method according to claim 3 is characterized in that: the mass ratio that mixes with river sand through the quality summation of pretreated acidleach manganese mud and cement is 1:0.67~1.2.
7. method according to claim 1, it is characterized in that: water-solid ratio is 2.5~3.5:10 described in the step (3).
8. method according to claim 1, it is characterized in that: step is pressurised into 20~40MPa described in (4), and the dwell time is 90 seconds.
9. method according to claim 1, it is characterized in that: heat-up rate described in the step (5) is 10 ℃ of per minutes, and described certain temperature is 100 ℃~120 ℃, and described for some time is 7~9 hours.
10. method according to claim 1, it is characterized in that: be the non-burning brick mould of a kind of preparation slag from molding jig described in the step (4), comprise top plate, framework and lower bolster, described lower bolster is provided with screw rod, top plate is provided with pressure transmitter, one nut is pressed on top plate by screwing passing on the described screw rod of top plate and pressure transmitter with non-burning brick raw material, in the space that framework and lower bolster surround, described pressure transmitter with pressure signal transmission to controller, controller is according to the screwing length of signal control nut and screw rod, and described lower bolster is provided with the square protruding block.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105330210A (en) * | 2015-11-20 | 2016-02-17 | 中信大锰矿业有限责任公司大新锰矿分公司 | Steam curing method of baking-free manganese slag bricks |
CN105461264A (en) * | 2015-11-20 | 2016-04-06 | 中信大锰矿业有限责任公司大新锰矿分公司 | A manganese slag unfired brick and a preparing method thereof |
CN114538807A (en) * | 2022-03-08 | 2022-05-27 | 重庆大学 | Manganese tailing slag-based baking-free brick and preparation method and application thereof |
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CN101565292A (en) * | 2009-05-27 | 2009-10-28 | 黄维理 | Formulation for producing autoclaved standard bricks by using electrolytic manganese dioxide waste residues and production method thereof |
CN101644089A (en) * | 2009-07-22 | 2010-02-10 | 贵州省建筑材料科学研究设计院 | Electrolytic manganese slag brick and preparation method thereof |
CN101691047A (en) * | 2009-09-01 | 2010-04-07 | 中国环境科学研究院 | Preparation method of electrolytic manganese slag autoclaved brick |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN101565292A (en) * | 2009-05-27 | 2009-10-28 | 黄维理 | Formulation for producing autoclaved standard bricks by using electrolytic manganese dioxide waste residues and production method thereof |
CN101644089A (en) * | 2009-07-22 | 2010-02-10 | 贵州省建筑材料科学研究设计院 | Electrolytic manganese slag brick and preparation method thereof |
CN101691047A (en) * | 2009-09-01 | 2010-04-07 | 中国环境科学研究院 | Preparation method of electrolytic manganese slag autoclaved brick |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105330210A (en) * | 2015-11-20 | 2016-02-17 | 中信大锰矿业有限责任公司大新锰矿分公司 | Steam curing method of baking-free manganese slag bricks |
CN105461264A (en) * | 2015-11-20 | 2016-04-06 | 中信大锰矿业有限责任公司大新锰矿分公司 | A manganese slag unfired brick and a preparing method thereof |
CN114538807A (en) * | 2022-03-08 | 2022-05-27 | 重庆大学 | Manganese tailing slag-based baking-free brick and preparation method and application thereof |
CN114538807B (en) * | 2022-03-08 | 2022-09-30 | 重庆大学 | Manganese tailing slag-based baking-free brick and preparation method and application thereof |
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