CN105330210A - Steam curing method of baking-free manganese slag bricks - Google Patents
Steam curing method of baking-free manganese slag bricks Download PDFInfo
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- CN105330210A CN105330210A CN201510810533.0A CN201510810533A CN105330210A CN 105330210 A CN105330210 A CN 105330210A CN 201510810533 A CN201510810533 A CN 201510810533A CN 105330210 A CN105330210 A CN 105330210A
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- 239000011449 brick Substances 0.000 title claims abstract description 77
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 38
- 239000011572 manganese Substances 0.000 title claims abstract description 38
- 238000001723 curing Methods 0.000 title abstract description 13
- 239000002893 slag Substances 0.000 title abstract description 5
- 238000000034 method Methods 0.000 claims description 35
- 238000009413 insulation Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000004566 building material Substances 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 14
- 238000006703 hydration reaction Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 7
- 239000002699 waste material Substances 0.000 description 6
- 239000013543 active substance Substances 0.000 description 5
- 239000000292 calcium oxide Substances 0.000 description 5
- 235000012255 calcium oxide Nutrition 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000036571 hydration Effects 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000003325 tomography Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 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
- 238000001879 gelation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 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
- 230000001133 acceleration Effects 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
- 239000003245 coal Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- -1 hydrogen calcium oxide Chemical class 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
- 238000002360 preparation method Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 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
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 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 the field of resource recycling and building materials and discloses a steam curing method of baking-free manganese slag bricks. The steam curing method comprises steps as follows: the baking-free manganese slag bricks are placed in a steam curing reaction tank, and steam curing is performed in three stages including a temperature increase stage, a constant temperature stage and a temperature decrease stage; the temperature increase stage is sequentially divided into three stages: the temperature is increased to 60-70 DEG C in the first stage and kept for 10-15 min, the temperature is increased to 80-85 DEG C in the second stage and kept for 20-30 min, the temperature is increased to 100-110 DEG C in the third stage, and then the constant temperature stage begins. The curing method solves problems that bodies of the baking-free bricks have faults and inner holes, the bodies are half-baked, the bricks crack, edges fall off, the strength is low, the durability is poor and the like, requirements for curing equipment are low, operation is simple and convenient, and the production cost is low.
Description
Technical field
The invention belongs to resources circulation regeneration and building materials field, relate to a kind of maintenance process of brick, particularly relate to the steam protecting method that a kind of manganese mud is non-burning brick.
Background technology
At present, the annual demand of the domestic annual sintered clay brick of China is about 6,000 hundred million pieces, and commercially proportion is approximately 70%, is topmost materials for wall.In recent years, along with the quickening of urbanization process, the demand of construction material is large, and cause a large amount of arable land to be destroyed, the sharply minimizing of land resources, causes the great attention of country.Meanwhile, the production of conventional clay vitrified brick not only needs to excavate a large amount of arable lands as raw material, and needs in sintering process consume a large amount of coal resources and give off SO
2deng gas, air is done great damage.Along with the appearance of global energy crisis and the raising of Public environmental attitude, urge the reform to material of construction.Non-burning brick as materials for wall exploitation, there is larger resources advantage, be subject to domestic and international researchist and pay close attention to widely.
Non-burning brick shaping after the maintenance stage be the important period of non-burning brick strength derived value, there is hydration reaction in its inner continuation.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 care environments also plays vital effect to non-burning brick technique.According to non-burning brick Strength Forming Mechanism, mainly make use of the hydration reaction of cement, generate gelation material, make brick body produce certain intensity.And, due to the activation of the materials such as unslaked lime, allow intravitreous active substance stripping in manganese slag, carry out hydration reaction with the material such as the calcium hydroxide in slurry, generate the materials such as ettringite, for non-burning brick intensity is laid a good foundation.Suitable care environments is conducive to the carrying out of non-burning brick middle hydration reaction.The strength derived value of different care environments to brick body has a great impact, such as, active substance in general waste residue is all wrapped in vitreum, and only have at a higher temperature, active substance is wherein easily stripping, when adopting steam press maintenance, the stripping quantity of active substance can be increased.Therefore, according to the kind of waste residue in brick body and the difference of activity degree, Maintenance Mechanism is also different.
Several maintenance methods such as natural curing, vapor cure and steam press maintenance are often adopted in industrial production.Natural curing refers under field conditions (factors), utilizes the mode such as illumination and artificial water spray to carry out maintenance.The maintenance principal feature of this mode is that cost is low, but because the temperature of physical environment is not high enough, therefore, hydration is slow, needs longer curing cycle.Vapor cure refers on the basis of natural curing, puts into inside vaporium, carry out the vapor cure of certain hour by non-burning brick, can the carrying out of acceleration of hydration effect.Steam press maintenance is the best a kind of maintenance method of effect, non-burning brick goods are positioned over steam pressure indoor, certain humidity and pressure are set, due to the effect of pressure, can steam is pressed in adobe, add the carrying out of hydration reaction, but steam press maintenance there is strict demand to the pressure in steam-cured tank, so also high to equipment requirements such as steam-cured tanks, thus its cost is also the highest.
Traditional non-burning brick product effect is not very desirable, and quality problems are relatively more serious, are mainly manifested in: 1. non-burning brick brick body has tomography and inner void, the external ripe interior life of brick, cracking arrisdefect; 2. brick body water-intake rate problem can not be ignored; 3. ultimate compression strength problem is serious; 4. poor durability, easily aging; 5. production cost is high.
Summary of the invention
Goal of the invention of the present invention has that curing temperature is too high, energy consumption is large for solving existing non-burning brick steam protecting method, non-burning brick brick body has tomography and inner void, the external ripe interior life of brick, ftracture arrisdefect, intensity is low, the problems such as poor durability, and the steam protecting method providing a kind of manganese mud non-burning brick.The inventive method is a kind of novel step temperature steam protecting method be combined into by differing temps and time in the temperature rise period, uses the mode of ladder-elevating temperature, carries out stage by stage, at times.
The technical solution used in the present invention is as follows:
The steam protecting method that a kind of manganese mud is non-burning brick, be placed in steam-cured retort by non-burning brick for manganese mud, be divided into intensification, constant temperature and temperature-fall period by temperature to carry out, the described temperature rise period is also divided into three phases successively and carries out: the first stage is warmed up to 60 ~ 70 DEG C, insulation 10 ~ 15min, subordinate phase is warmed up to 80 ~ 85 DEG C, insulation 20 ~ 30min, phase III is warmed up to 100 ~ 110 DEG C, then enters the constant temperature stage.
Further, described temperature rise period temperature rise rate is 10 DEG C/min.
Further, described constant temperature stage constant temperature time is 7 ~ 9h.
Further, described temperature-fall period temperature fall time is 1.5 ~ 2.5h.
Further, relative humidity >=75% in described steam-cured retort.
The present invention adopts steam protecting method, and be divided into intensification, constant temperature and temperature-fall period by temperature and carry out, each phase principle is as follows:
(1) temperature rise period
In steam curing process, temperature-rise period is very crucial, and too fast intensification can make the phenomenons such as the excessive appearance expansion of adobe internal-external temperature difference, reduces non-burning brick intensity.But temperature rise rate is excessively slow, also can make adobe hyperabsorption moisture, cause adobe internal structure loose, affect non-burning brick performance.The mode of ladder-elevating temperature is adopted in temperature-rise period of the present invention, be unlikely to make non-burning brick adobe surface hydration too fast thus block to lead to inner hole, water vapor enters the internal void of adobe, the soluble substances such as dissolved hydrogen calcium oxide, and react with materials such as the active substances (silicon-dioxide, aluminium sesquioxide) in acidleach manganese slag, generate new gelation material, improve non-burning brick intensity; Steam can carry a large amount of thermoosmosiss to non-burning brick inside simultaneously, and improve adobe internal temperature, make internal and external temperature homogeneous, aquation is synchronously carried out, and decreases the non-burning brick cracking arrisdefect phenomenon caused because temperature is uneven.
(2) the constant temperature stage
There is hydration reaction in non-burning brick inside, hydration reaction speed and temperature have much relations.The dynamics formula of reaction is:
K＝Aexp[-Ea/(RT)]
Wherein, A and R is constant; T is temperature of reaction, and unit is K; Ea is reaction activity, and unit is J/mol; K is speed of reaction.From formula, speed of reaction and temperature have much relations.Temperature raises, and speed of reaction enlarges markedly, and hydration reaction can be made more abundant.After maintaining box temperature reaches preset value, need constant temperature for some time, allowing non-burning brickly has time enough generation sclerous reaction, strengthens non-burning brick strength property.Constant temperature time is mainly determined according to the content of the free calcium oxide of adobe inside, when the amount of free calcium oxide reduces to certain value, illustrates that reaction compares fully.
(3) temperature-fall period
Adobe temperature-fall period also has material impact to non-burning brick performance.Cooling rate is too fast, and easily cause non-burning brick difference variation large, the situations such as crack appear in brick body.Due to the evaporation of moisture, reduce the content of adobe internal moisture, unformed hydrate and calcium hydroxide crystallization in solution, increase adobe degree of compactness, improve non-burning brick intensity.Slow if lowered the temperature, the degree of crystallinity of the materials such as calcium hydroxide can be affected, detrimentally affect is caused to non-burning brick intensity.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
(1) ore deposit waste residue is utilized to prepare for building non-burning brick for raw material, both turned waste into wealth, save energy, turn avoid the secondary pollution of sulphur to environment, reduce CO2 emissions, while state guarantee cultivated land resource, the economic worth that has also been enterprise and social creativity;
(2) solve non-burning brick brick body and have tomography and inner void, the external ripe interior life of brick, cracking arrisdefect, the problems such as intensity is low, poor durability;
(3) steam protecting method maintenance of equipment is adopted to require low, easy and simple to handle, low production cost;
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Getting acidleach manganese mud is raw material, under the prerequisite not changing manganese mud other production technique non-burning brick, and the Performance comparision that the manganese mud using steam protecting method maintenance of the present invention to obtain manganese mud that is non-burning brick and that use conventional vapor maintenance process to obtain is non-burning brick.
(1) preparation that manganese mud is non-burning brick
Take 5kg acidleach manganese ore waste residue, in manganese ore waste residue, add 1kg unslaked lime, pre-treatment is carried out to acidleach manganese mud; Mixture is being obtained after adding 0.7kg cement and 4kg natural river sand dry blending in pretreated acidleach manganese mud; In mixture, add 2.5kg water, and stir, obtain muddy compound; Employing is of a size of 70mm × 40mm × 30mm forming mould, and the compression moulding of described muddy compound is obtained adobe; Described adobe is non-burning brick according to steam protecting method maintenance manganese mud described in above-described embodiment 1 ~ 4 and comparative example 1 respectively.
Embodiment 1
The steam protecting method that a kind of manganese mud is non-burning brick, specifically: be in the steam-cured retort of 80% by non-burning brick for the manganese mud relative humidity that is placed in, be divided into intensification, constant temperature and temperature-fall period by temperature to carry out, described temperature rise period temperature rise rate is 10 DEG C/min, be divided into three phases successively to carry out: the first stage is warmed up to 60 DEG C, insulation 10min, subordinate phase is warmed up to 80 DEG C, insulation 20min, phase III is warmed up to 100 DEG C, then the constant temperature stage is entered, constant temperature stage constant temperature time is 7h, after enter temperature-fall period, temperature fall time is 2h.
Embodiment 2
The steam protecting method that a kind of manganese mud is non-burning brick, specifically: be in the steam-cured retort of 85% by non-burning brick for the manganese mud relative humidity that is placed in, be divided into intensification, constant temperature and temperature-fall period by temperature to carry out, described temperature rise period temperature rise rate is 10 DEG C/min, be divided into three phases successively to carry out: the first stage is warmed up to 70 DEG C, insulation 15min, subordinate phase is warmed up to 85 DEG C, insulation 25min, phase III is warmed up to 110 DEG C, then the constant temperature stage is entered, constant temperature stage constant temperature time is 8h, after enter temperature-fall period, temperature fall time is 2.5h.
Embodiment 3
The steam protecting method that a kind of manganese mud is non-burning brick, specifically: be in the steam-cured retort of 95% by non-burning brick for the manganese mud relative humidity that is placed in, be divided into intensification, constant temperature and temperature-fall period by temperature to carry out, described temperature rise period temperature rise rate is 10 DEG C/min, be divided into three phases successively to carry out: the first stage is warmed up to 60 DEG C, insulation 10min, subordinate phase is warmed up to 80 DEG C, insulation 30min, phase III is warmed up to 100 DEG C, then the constant temperature stage is entered, constant temperature stage constant temperature time is 9h, after enter temperature-fall period, temperature fall time is 1.5h.
Embodiment 4
The steam protecting method that a kind of manganese mud is non-burning brick, specifically: be in the steam-cured retort of 80% by non-burning brick for the manganese mud relative humidity that is placed in, be divided into intensification, constant temperature and temperature-fall period by temperature to carry out, described temperature rise period temperature rise rate is 10 DEG C/min, be divided into three phases successively to carry out: the first stage is warmed up to 65 DEG C, insulation 10min, subordinate phase is warmed up to 85 DEG C, insulation 25min, phase III is warmed up to 105 DEG C, then the constant temperature stage is entered, constant temperature stage constant temperature time is 7h, after enter temperature-fall period, temperature fall time is 2h.
Comparative example 1
The steam protecting method that a kind of manganese mud is non-burning brick, specifically: be in the steam-cured retort of 80% by non-burning brick for the manganese mud relative humidity that is placed in, be divided into intensification, constant temperature and temperature-fall period by temperature to carry out, described temperature rise period temperature rise rate is 10 DEG C/min, warming temperature is 100 DEG C, then enters the constant temperature stage, and constant temperature stage constant temperature time is 7h, after enter temperature-fall period, temperature fall time is 2h.
(2) non-burning brick ultimate compression strength Performance comparision
The non-burning brick ultimate compression strength Performance comparision of table 1
Table 1 shows non-burning brick 7 days of manganese mud and 28 days ultimate compression strength indexs prepared by different steam protecting method.Can find out, compared with traditional steam protecting method, the non-burning brick ultimate compression strength of the manganese mud using steam protecting method of the present invention to prepare obtains and significantly improves.
Claims (5)
1. the steam protecting method that a manganese mud is non-burning brick, it is characterized in that: be placed in steam-cured retort by non-burning brick for manganese mud, be divided into intensification, constant temperature and temperature-fall period by temperature to carry out, the described temperature rise period is also divided into three phases successively and carries out: the first stage is warmed up to 60 ~ 70 DEG C, insulation 10 ~ 15min, subordinate phase is warmed up to 80 ~ 85 DEG C, insulation 20 ~ 30min, phase III is warmed up to 100 ~ 110 DEG C, then enters the constant temperature stage.
2. the steam protecting method that a kind of manganese mud according to claim 1 is non-burning brick, is characterized in that: described temperature rise period temperature rise rate is 10 DEG C/min.
3. the steam protecting method that a kind of manganese mud according to claim 1 is non-burning brick, is characterized in that: described constant temperature stage constant temperature time is 7 ~ 9h.
4. the steam protecting method that a kind of manganese mud according to claim 1 is non-burning brick, is characterized in that: described temperature-fall period temperature fall time is 1.5 ~ 2.5h.
5. the steam protecting method that a kind of manganese mud according to claim 1 is non-burning brick, is characterized in that: relative humidity >=75% in described steam-cured retort.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510810533.0A CN105330210B (en) | 2015-11-20 | 2015-11-20 | A kind of steam protecting method of manganese ore slag bake-free brick |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510810533.0A CN105330210B (en) | 2015-11-20 | 2015-11-20 | A kind of steam protecting method of manganese ore slag bake-free brick |
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| CN105330210A true CN105330210A (en) | 2016-02-17 |
| CN105330210B CN105330210B (en) | 2017-09-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188149A (en) * | 2017-12-29 | 2018-06-22 | 上海浦东路桥建设股份有限公司 | A kind of urban building waste treatment process and resource utilization process |
| CN108214848A (en) * | 2018-03-28 | 2018-06-29 | 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 |
| CN108407063A (en) * | 2018-03-28 | 2018-08-17 | 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 |
| CN110823750A (en) * | 2018-08-10 | 2020-02-21 | 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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| CN103193441A (en) * | 2013-04-26 | 2013-07-10 | 中南大学 | Method for preparing slag steam-cured brick |
| CN103737706A (en) * | 2013-12-10 | 2014-04-23 | 中北大学 | Coal ash baking-free brick stepped temperature autoclaved curing method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108188149A (en) * | 2017-12-29 | 2018-06-22 | 上海浦东路桥建设股份有限公司 | A kind of urban building waste treatment process and resource utilization process |
| CN108214848A (en) * | 2018-03-28 | 2018-06-29 | 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 |
| CN108407063A (en) * | 2018-03-28 | 2018-08-17 | 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 |
| 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 |
| CN110823750A (en) * | 2018-08-10 | 2020-02-21 | 中国石油化工股份有限公司 | Method for evaluating coke rate of heavy oil contact cracking |
| 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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| CN105330210B (en) | 2017-09-26 |
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