CN105330210B - A kind of steam protecting method of manganese ore slag bake-free brick - Google Patents
A kind of steam protecting method of manganese ore slag bake-free brick Download PDFInfo
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- CN105330210B CN105330210B CN201510810533.0A CN201510810533A CN105330210B CN 105330210 B CN105330210 B CN 105330210B CN 201510810533 A CN201510810533 A CN 201510810533A CN 105330210 B CN105330210 B CN 105330210B
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- 239000011449 brick Substances 0.000 title claims abstract description 75
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000011572 manganese Substances 0.000 title claims abstract description 35
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002893 slag Substances 0.000 title claims abstract description 30
- 238000010792 warming Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 239000011800 void material Substances 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000003325 tomography Methods 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- 230000008929 regeneration Effects 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000006703 hydration reaction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000002699 waste material Substances 0.000 description 6
- 239000011149 active material Substances 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000196324 Embryophyta Species 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
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000008531 maintenance mechanism Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention belongs to resources circulation regeneration and building materials field, a kind of steam protecting method of manganese ore slag bake-free brick is disclosed.Steam protecting method of the present invention is divided into heating, constant temperature and temperature-fall period for manganese ore slag bake-free brick is placed in steam-cured retort, by temperature to be carried out, and the temperature rise period is also divided into three phases progress successively：First stage is warming up to 60 ~ 70 DEG C, 10 ~ 15min of insulation, and second stage is warming up to 80 ~ 85 DEG C, 20 ~ 30min of insulation, and the phase III is warming up to 100 ~ 110 DEG C, subsequently into the constant temperature stage.Maintenance process of the present invention solves the problems such as non-burning brick brick body has ripe interior life outside tomography and inner void, brick body, cracking arrisdefect, low intensity, poor durability, and low, easy to operate, low production cost is required to maintenance of equipment.
Description
Technical field
The invention belongs to resources circulation regeneration and building materials field, it is related to a kind of maintenance process of brick, more particularly to one
Plant the steam protecting method of manganese ore slag bake-free brick.
Background technology
At present, the annual demand of the domestic annual sintered clay brick of China is 600,000,000,000 pieces or so, commercially shared
Proportion is about 70%, is topmost materials for wall.In recent years, with the quickening of urbanization process, construction material
Demand is big, causes a large amount of arable lands destroyed, and the drastically reduction of land resource causes the great attention of country.Meanwhile, tradition
The production of clay brick not only needs to excavate substantial amounts of arable land as needing to consume substantial amounts of coal in raw material, and sintering process
Charcoal resource simultaneously gives off SO2Deng gas, air is done great damage.Appearance and public's environmental protection with global energy crisis
The raising of consciousness, has urged the reform to construction material.It is non-burning brick to be developed as materials for wall, with larger resources advantage,
Widely paid close attention to by domestic and international researcher.
The maintenance stage after non-burning brick shaping is the important period of non-burning brick intensity formation, and it is anti-that aquation occurs for its internal continuation
Should.Hydration rate is faster, and hydrated product amount is more, then non-burning brick intensity is higher, and the production cycle is shorter.Therefore, suitable maintenance
Environment also functions to vital effect to non-burning brick technique.It can be seen from non-burning brick Strength Forming Mechanism, mainly use
The hydration reaction of cement, generates gelation material, brick body is produced certain intensity.It is additionally, since the materials such as quick lime
Activation, allows intravitreous active material dissolution in manganese slag, and hydration reaction is carried out with the material such as the calcium hydroxide in slurry,
The materials such as entringite are generated, are that non-burning brick intensity is laid a good foundation.Suitable care environments are conducive to non-burning brick middle aquation anti-
The progress answered.Intensity formation of the different care environments to brick body has a great impact, such as the active material in general waste residue
All it is wrapped in vitreum, only at a higher temperature, active material therein just easily dissolution, when using steam press maintenance
When, by increasing capacitance it is possible to increase the stripping quantity of active material.Therefore, according to the species of waste residue in brick body and the difference of activity degree, Maintenance Mechanism
Also it is different.
Frequently with several maintenance methods such as natural curing, steam curing and steam press maintenance in industrial production.Natural curing is
Refer under field conditions (factors), conserved using the mode such as illumination and artificial water spray.The maintenance of this mode is mainly characterized by cost
It is low, but because the temperature of natural environment is not high enough, therefore, hydration is slowly, it is necessary to longer curing cycle.Steam curing
Refer on the basis of natural curing, the non-burning brick steam curing be put into inside vaporium, carry out certain time can accelerate
The progress of hydration.Steam press maintenance is a kind of best maintenance method of effect, and unburned tile product is positioned in steam pressure room, if
Certain humidity and pressure are put, due to the effect of pressure, steam can be pressed into adobe, the progress of hydration reaction is added,
But steam press maintenance has strict demand to the pressure in steam-cured tank, so it is also high to equipment requirements such as steam-cured tanks, so that its cost
Also highest.
Traditional unburned brick product effect is not highly desirable, and quality problems are mainly manifested in than more serious:1. it is non-burning brick
Brick body has ripe interior life outside tomography and inner void, brick body, cracking arrisdefect；2. brick body water absorption rate problem can not be ignored；3. pressure resistance
Degree problem is serious；4. poor durability, easy aging；5. production cost is high.
The content of the invention
The goal of the invention of the present invention is that have that curing temperature is too high, energy consumption to solve existing non-burning brick steam protecting method
Greatly, the problems such as non-burning brick brick body has ripe interior life outside tomography and inner void, brick body, cracking arrisdefect, low intensity, poor durability, and
A kind of steam protecting method of manganese ore slag bake-free brick is provided.The inventive method be one kind in the temperature rise period by different temperatures and time
The new step temperature steam protecting method being combined into, using the mode of ladder-elevating temperature, is carried out stage by stage, at times.
The technical solution adopted by the present invention is as follows：
A kind of steam protecting method of manganese ore slag bake-free brick, manganese ore slag bake-free brick is placed in steam-cured retort, by temperature
It is divided into heating, constant temperature and temperature-fall period to carry out, the temperature rise period is also divided into three phases progress successively：First stage is warming up to
60~70 DEG C, 10~15min of insulation, second stage are warming up to 80~85 DEG C, 20~30min of insulation, and the phase III is warming up to 100
~110 DEG C, subsequently into the constant temperature stage.
Further, the temperature rise period heating rate is 10 DEG C/min.
Further, the constant temperature stage constant temperature time is 7~9h.
Further, the temperature-fall period temperature fall time is 1.5~2.5h.
Further, relative humidity >=75% in the steam-cured retort.
The present invention uses steam protecting method, and being divided into heating, constant temperature and temperature-fall period by temperature is carried out, and each phase principle is such as
Under：
(1) temperature rise period
In steam curing process, temperature-rise period is very crucial, and too fast heating can make adobe internal-external temperature difference is excessive to occur expanding
Phenomenon, reduces non-burning brick intensity.But, heating rate is excessively slow, adobe is absorbed excess moisture, cause adobe internal structure
Loosely, non-burning brick performance is influenceed.In temperature-rise period of the present invention by the way of ladder-elevating temperature, it is unlikely to make unburned brick adobe surface
Aquation is too fast to lead to internal hole so as to block, and water vapour enters the internal void of adobe, dissolves the solubilities such as calcium hydroxide
Material, and reacted with the material such as the active material (silica, alundum (Al2O3)) in acidleach manganese slag, generate new gel
Property material, improve non-burning brick intensity；Steam can carry substantial amounts of heat leak to non-burning brick inside simultaneously, improve in adobe
Portion's temperature so that internal and external temperature is homogeneous, aquation is synchronously carried out, and is reduced the non-burning brick arrisdefect that ftractureed caused by temperature is uneven and is showed
As.
(2) the constant temperature stage
Non-burning brick internal generation hydration reaction, hydration reaction speed has much relations with temperature.The dynamics formula of reaction
For：
K=Aexp [- Ea/ (RT)]
Wherein, A and R is constant；T is reaction temperature, and unit is K；Ea is reaction activity, and unit is J/mol；K is anti-
Answer speed.From formula, reaction rate has much relations with temperature.Temperature is raised, and reaction rate is significantly increased, and can make aquation
Reaction is more abundant., it is necessary to which constant temperature, allows non-burning brick have time enough for a period of time after curing box temperature reaches predetermined value
Sclerous reaction, strengthens non-burning brick strength character.Depending on the main content according to the free calcium oxide inside adobe of constant temperature time, when
When the amount of free calcium oxide is reduced to certain value, illustrate that reaction is compared fully.
(3) temperature-fall period
Adobe temperature-fall period also has a major impact to non-burning brick performance.Cooling rate is too fast, easily causes the non-burning brick temperature difference
Change is big, situations such as crack occurs in brick body.Due to the evaporation of moisture, reduce in the content of adobe internal moisture, solution without fixed
Type hyrate and calcium hydroxide crystallization are separated out, and are increased adobe compactness, are improved non-burning brick intensity.If it is slow to cool, meeting
The crystallinity of the materials such as calcium hydroxide is influenceed, non-burning brick intensity is had undesirable effect.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
(1) it is that raw material prepares Building baking-free bricks using ore deposit waste residue, both turned waste into wealth, saves the energy, and turn avoid sulphur pair
The secondary pollution of environment, reduces CO2 emissions, is also enterprise and social creativity while being state guarantee cultivated land resource
Economic value；
(2) solving non-burning brick brick body has ripe interior life outside tomography and inner void, brick body, cracking arrisdefect, and low intensity is durable
Property difference the problems such as；
(3) low, easy to operate, low production cost is required using steam protecting method maintenance of equipment；
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Embodiment is closed, the present invention is expanded on further.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
It is raw material to take acidleach manganese mud, on the premise of the other production technologies of manganese ore slag bake-free brick are not changed, uses this hair
Bright the steam protecting method obtained manganese ore slag bake-free brick of maintenance and the manganese ore slag bake-free brick obtained using conventional vapor maintenance process
Performance comparision.
(1) preparation of manganese ore slag bake-free brick
5kg acidleach manganese ore waste residues are weighed, 1kg quick limes are added into manganese ore waste residue, acidleach manganese mud is pre-processed；
Mixture is obtained after adding 0.7kg cement and 4kg natural river sand dry-mixings in the acidleach manganese mud by pretreatment；To mixing
2.5kg water is added in thing, and is stirred, muddy compound is obtained；Size is used for 70mm × 40mm × 30mm moulds, will
The muddy compound is compressing to obtain adobe；By the adobe respectively according to above-described embodiment 1~4 and comparative example
Steam protecting method described in 1 conserves manganese ore slag bake-free brick.
Embodiment 1
A kind of steam protecting method of manganese ore slag bake-free brick, be specifically：Manganese ore slag bake-free brick is placed in into relative humidity is
In 80% steam-cured retort, it is divided into heating, constant temperature and temperature-fall period by temperature and carries out, the temperature rise period heating rate is 10
DEG C/min, three phases progress is divided into successively：First stage be warming up to 60 DEG C, insulation 10min, second stage be warming up to 80 DEG C,
20min is incubated, the phase III is warming up to 100 DEG C, subsequently into the constant temperature stage, constant temperature stage constant temperature time is 7h, rear to enter drop
Thermophase, temperature fall time is 2h.
Embodiment 2
A kind of steam protecting method of manganese ore slag bake-free brick, be specifically：Manganese ore slag bake-free brick is placed in into relative humidity is
In 85% steam-cured retort, it is divided into heating, constant temperature and temperature-fall period by temperature and carries out, the temperature rise period heating rate is 10
DEG C/min, three phases progress is divided into successively：First stage be warming up to 70 DEG C, insulation 15min, second stage be warming up to 85 DEG C,
25min is incubated, the phase III is warming up to 110 DEG C, subsequently into the constant temperature stage, constant temperature stage constant temperature time is 8h, rear to enter drop
Thermophase, temperature fall time is 2.5h.
Embodiment 3
A kind of steam protecting method of manganese ore slag bake-free brick, be specifically：Manganese ore slag bake-free brick is placed in into relative humidity is
In 95% steam-cured retort, it is divided into heating, constant temperature and temperature-fall period by temperature and carries out, the temperature rise period heating rate is 10
DEG C/min, three phases progress is divided into successively：First stage be warming up to 60 DEG C, insulation 10min, second stage be warming up to 80 DEG C,
30min is incubated, the phase III is warming up to 100 DEG C, subsequently into the constant temperature stage, constant temperature stage constant temperature time is 9h, rear to enter drop
Thermophase, temperature fall time is 1.5h.
Embodiment 4
A kind of steam protecting method of manganese ore slag bake-free brick, be specifically：Manganese ore slag bake-free brick is placed in into relative humidity is
In 80% steam-cured retort, it is divided into heating, constant temperature and temperature-fall period by temperature and carries out, the temperature rise period heating rate is 10
DEG C/min, three phases progress is divided into successively：First stage be warming up to 65 DEG C, insulation 10min, second stage be warming up to 85 DEG C,
25min is incubated, the phase III is warming up to 105 DEG C, subsequently into the constant temperature stage, constant temperature stage constant temperature time is 7h, rear to enter drop
Thermophase, temperature fall time is 2h.
Comparative example 1
A kind of steam protecting method of manganese ore slag bake-free brick, be specifically：Manganese ore slag bake-free brick is placed in into relative humidity is
In 80% steam-cured retort, it is divided into heating, constant temperature and temperature-fall period by temperature and carries out, the temperature rise period heating rate is 10
DEG C/min, warming temperature is 100 DEG C, subsequently into the constant temperature stage, and constant temperature stage constant temperature time is 7h, and temperature-fall period is entered afterwards,
Temperature fall time is 2h.
(2) non-burning brick compression strength performance comparision
The non-burning brick compression strength performance comparision of table 1
Table 1 shows 7 days and 28 days compression strength indexs of manganese ore slag bake-free brick prepared by different steam protecting methods.Can
To find out, compared with traditional steam protecting method, the manganese ore slag bake-free brick prepared using the steam protecting method of the present invention
Compression strength is greatly improved.
Claims (2)
1. a kind of steam protecting method of manganese ore slag bake-free brick, it is characterised in that：Manganese ore slag bake-free brick is placed in steam-cured retort
It is interior, it is divided into heating, constant temperature and temperature-fall period by temperature and carries out, the temperature rise period is also divided into three phases progress successively：First
Stage is warming up to 60~70 DEG C, 10~15min of insulation, and second stage is warming up to 80~85 DEG C, 20~30min of insulation, the 3rd rank
Section is warming up to 100~110 DEG C, subsequently into the constant temperature stage；The temperature-fall period temperature fall time is 1.5~2.5h；The heating
Stage heating rate is 10 DEG C/min；The constant temperature stage constant temperature time is 7~9h.
2. a kind of steam protecting method of manganese ore slag bake-free brick according to claim 1, it is characterised in that：It is described steam-cured anti-
Answer relative humidity >=75% in tank.
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| CN108188149B (en) * | 2017-12-29 | 2021-04-06 | 上海浦东路桥建设股份有限公司 | Construction waste treatment process |
| CN108214848B (en) * | 2018-03-28 | 2019-11-29 | 四川省劲腾环保建材有限公司 | A kind of partition plate steam protecting method and partition plate steam curing apparatus |
| CN108407063B (en) * | 2018-03-28 | 2019-11-29 | 四川省劲腾环保建材有限公司 | A kind of steam protecting method of partition plate steam protecting method and concrete product |
| CN110823750B (en) * | 2018-08-10 | 2022-07-12 | 中国石油化工股份有限公司 | Method for evaluating coke rate of heavy oil contact cracking |
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| JP2000086371A (en) * | 1998-07-10 | 2000-03-28 | Sekisui Chem Co Ltd | Cement hardened body and its production |
| CN102490262A (en) * | 2011-11-30 | 2012-06-13 | 中铁五局集团建筑工程有限责任公司 | Steam curing construction method for ballastless track plate |
| CN103193441A (en) * | 2013-04-26 | 2013-07-10 | 中南大学 | Method for preparing slag steam-cured brick |
| CN103737706B (en) * | 2013-12-10 | 2015-10-28 | 中北大学 | Coal ash baking-free brick step temperature steam press maintenance method |
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Address after: 532399 Xialei Town, Daxin County, Chongzuo City, Guangxi Zhuang Autonomous Region Patentee after: Daxin Manganese Mine Branch of Nanfang Manganese Industry Group Co.,Ltd. Address before: 532315 Daxin Manganese Mine, Xialei Town, Chongzuo City, Guangxi Zhuang Autonomous Region Patentee before: DAXIN MANGANESE MINE BRANCH OF CITIC DAMENG MINING INDUSTRIES Ltd. |
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Effective date of registration: 20211025 Address after: 532399 Xialei Town, Daxin County, Chongzuo City, Guangxi Zhuang Autonomous Region Patentee after: Daxin Manganese Mine Branch of Nanfang Manganese Industry Group Co.,Ltd. Patentee after: Nanfang Manganese Industry Group Co.,Ltd. Address before: 532399 Xialei Town, Daxin County, Chongzuo City, Guangxi Zhuang Autonomous Region Patentee before: Daxin Manganese Mine Branch of Nanfang Manganese Industry Group Co.,Ltd. |