CN101318783A - Activation method for coal gangue burned ash - Google Patents
Activation method for coal gangue burned ash Download PDFInfo
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- CN101318783A CN101318783A CNA2008101201271A CN200810120127A CN101318783A CN 101318783 A CN101318783 A CN 101318783A CN A2008101201271 A CNA2008101201271 A CN A2008101201271A CN 200810120127 A CN200810120127 A CN 200810120127A CN 101318783 A CN101318783 A CN 101318783A
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- coal gangue
- burned ash
- gangue burned
- activation method
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for activating coal gangue calcination ash. The method comprises the following steps that: firstly, the coal gangue calcination ash is subjected to heat treatment, and when the coal gangue calcination ash is heated up to the temperature(T1) of between 750 and 850 DEG C, the heating is stopped, and the heated coal gangue calcination ash undergoes the heat preservation,, the time (t1) of which is between 30 and 60 minutes; secondly, the coal gangue calcination ash is cooled down to room temperature, when the coal gangue calcination ash is cooled down to the room temperature, the coal gangue calcination ash is added with limestone and dihydrate gypsum and evenly stirred and subjected to enclosing material, the ratio range of contents of the coal gangue calcination ash, the limestone and the dihydrate gypsum is 10 to 2-3 to 0.5-1.5; the curing time(t2) of the material is between 4 and 8 hours; after curing the material, the coal gangue calcination ash is subjected to ballmilling, the time(t3) of which is between 15 and 30 minutes; and finally the treated coal gangue calcination ash is packaged and stored in areas where are ventilative, dry and downsun. The invention can calcinate the coal gangue calcination ash into a recoverable material, thereby avoiding the environmental pollution caused by the coal gangue calcination ash.
Description
Technical field:
The invention belongs to field of solid waste treating technology, specifically is a kind of activation method of coal gangue burned ash.
Background technology:
At present, along with the quick rise of the in short supply and energy prices of global energy,, there are many enterprises to adopt coal gangue to act as a fuel now, thereby produced a large amount of coal gangue burned ash in order to reduce production costs.Because coal gangue burned ash is a kind of solid waste, if unprocessed and stack arbitrarily or landfill will pollute environment.Therefore, how coal gangue being acted as a fuel and the burning ash that produces carries out subsequent disposal, is a problem demanding prompt solution thereby make its material that becomes a kind of recyclable utilization.
Summary of the invention:
The technical problem to be solved in the present invention is, provides a kind of and coal gangue burned ash can be become a kind of material of recyclable utilization, thereby prevent the activation method of the coal gangue burned ash that coal gangue burned ash pollutes environment.
Technical solution of the present invention is that a kind of activation method with coal gangue burned ash of following steps is provided:
1., coal gangue burned ash is heat-treated, and be heated to temperature T
1Stop heating when being 750 ℃～850 ℃;
2., the coal gangue burned ash after the heating is incubated the time t of described insulation
1Be 30～60min; It is cooled to room temperature;
3., in reducing to the coal gangue burned ash of room temperature, add Wingdale and dihydrate gypsum, the content ratio scope of described coal gangue burned ash, Wingdale and dihydrate gypsum is 10: 2～3: 0.5～1.5, carries out shelving after stirring, the time t of described shelving
2It is 4～8 hours;
4., after shelving finishes, coal gangue burned ash is carried out ball milling, the time t of described ball milling
3Be 15～30min;
5., standby with leaving ventilation, drying and back of the body sun place after the packing of the coal gangue burned ash after the above processing in.
After adopting above step, the present invention has following remarkable advantage and beneficial effect: in thermal treatment of the present invention is in the heat-processed, the lattice of coal gangue burned ash can change, and the heat preservation method among the present invention is to carry out crystal lattice recombination in order to make coal gangue burned ash have adequate time, thereby it is active that coal gangue burned ash is produced under the effect of chemical substance Wingdale and dihydrate gypsum, will become a kind of supplementary cementitious material of recyclable utilization after the activated processing of depleted coal gangue burned ash, form the regeneration of resource; Meanwhile, as supplementary cementitious material, the cement stone that forms after itself and the cementitious composite aquation can chemical bonding and physics be sealed with harmful ion, thereby prevent that harmful ion from oozing out, reach the purpose of protection environment.
As a kind of optimal way, said temperature T
1Can be 800 ℃.
When above-mentioned coal gangue burned ash was heat-treated, its temperature rise speed can be 5 ℃/min～8 ℃/min.
As a kind of optimal way, when above-mentioned coal gangue burned ash was heat-treated, its temperature rise speed can be 6 ℃/min.
As a kind of optimal way, the time t of above-mentioned insulation
1Can be 45min.
As a kind of optimal way, the content ratio of above-mentioned coal gangue burned ash, Wingdale and dihydrate gypsum can be 10: 2.5: 1.
As a kind of optimal way, the time t of above-mentioned shelving
2Can be 6 hours.
As a kind of optimal way, the time t of above-mentioned ball milling
3Can be 20min.
As a kind of improvement of the present invention, leave the time t of ventilation, drying and back of the body Yang Chu after the described coal gangue burned ash packing in
4Can be less than 6 months.When shelf-time of coal gangue burned ash surpasses six months, the coal gangue fever that activation is happy or activity will descend greatly, therefore, this improvement of the present invention can keep the activity of coal gangue burned ash.
Specific embodiment:
The invention will be further described below by specific embodiment:
The activation method of coal gangue burned ash of the present invention may further comprise the steps, and it at first the depleted coal gangue burned ash that reclaims is put into heating installation such as roasting kiln heats, and temperature rise speed is controlled at 6 ℃/min during heating; When being heated to temperature T
1Stop heating when being 800 ℃, then the coal gangue burned ash after the heating is incubated, thereby it is cooled to room temperature, and what insulation described here referred to is exactly 800 ℃ of insulations, and the purpose of described insulation is to make the burning ash have time enough to carry out crystal lattice recombination in this temperature; Described cooling refers to naturally cooling, and described room temperature is exactly a natural temperature; The time t of described insulation
1Be controlled at 45min; Then, add Wingdale and dihydrate gypsum in reducing to the coal gangue burned ash of room temperature, and carry out shelving after stirring, the content ratio of described coal gangue burned ash, Wingdale and dihydrate gypsum is 10: 2.5: 1; The time t of described shelving
2Be 6 hours, in other words, the coal gangue burned ash after stirring, Wingdale and dihydrate gypsum need leave standstill 6 hours at ambient temperature; After shelving is finished, the coal gangue burned ash after handling is carried out ball milling, described ball milling is to realize with conventional ball mill under normal temperature normal temperature, the time t that described ball milling continues
3Be 20min; After finishing above step, ventilation, drying and back of the body sun place are standby with leaving in after the packing of the coal gangue burned ash after the above processing, and the time of depositing generally was less than 6 months.
Behind the activation method of using coal gangue burned ash of the present invention, the depleted coal gangue burned ash will become a kind of supplementary cementitious material of recyclable utilization, supplementary cementitious material is a kind of gelling material with potential hydraulically active, under the condition that has exciting agent to exist, hydration reaction can take place produce intensity.This gelling material can be after adding exciting agent such as water glass, cement clinker, add can be widely used in after water stirs in the construction work as in cement concrete, side walk slab, the roadbed material etc.
Claims (9)
1, a kind of activation method of coal gangue burned ash, it is characterized in that: it may further comprise the steps:
1., coal gangue burned ash is heat-treated, and be heated to temperature T
1Stop heating when being 750 ℃～850 ℃;
2., the coal gangue burned ash after the heating is incubated the time t of described insulation
1Be 30～60min; It is cooled to room temperature;
3., in reducing to the coal gangue burned ash of room temperature, add Wingdale and dihydrate gypsum, the content ratio scope of described coal gangue burned ash, Wingdale and dihydrate gypsum is 10: 2～3: 0.5～1.5, carries out shelving after stirring, the time t of described shelving
2It is 4～8 hours;
4., after shelving finishes, the coal gangue burned ash after handling is carried out ball milling, the time t of described ball milling
3Be 15～30min;
5., standby with leaving ventilation, drying and back of the body sun place after the packing of the coal gangue burned ash after the above processing in.
2, the activation method of coal gangue burned ash according to claim 1 is characterized in that: described temperature T
1It is 800 ℃.
3, the activation method of coal gangue burned ash according to claim 1 is characterized in that: when described coal gangue burned ash was heat-treated, its temperature rise speed was 5 ℃/min～8 ℃/min.
4, the activation method of coal gangue burned ash according to claim 3 is characterized in that: when described coal gangue burned ash was heat-treated, its temperature rise speed was 6 ℃/min.
5, the activation method of coal gangue burned ash according to claim 1 is characterized in that: the time t of described insulation
1Be 45min.
6, the activation method of coal gangue burned ash according to claim 1 is characterized in that: the content ratio of described coal gangue burned ash, Wingdale and dihydrate gypsum is 10: 2.5: 1.
7, the activation method of coal gangue burned ash according to claim 1 is characterized in that: the time t of described shelving
2It is 6 hours.
8, the activation method of coal gangue burned ash according to claim 1 is characterized in that: the time t of described ball milling
3Be 20min.
9, the activation method of coal gangue burned ash according to claim 1 is characterized in that: the time t that leaves ventilation, drying and back of the body Yang Chu after the coal gangue burned ash packing in
4Less than 6 months.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101201271A CN101318783B (en) | 2008-07-22 | 2008-07-22 | Activation method for coal gangue burned ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101201271A CN101318783B (en) | 2008-07-22 | 2008-07-22 | Activation method for coal gangue burned ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101318783A true CN101318783A (en) | 2008-12-10 |
| CN101318783B CN101318783B (en) | 2011-02-16 |
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ID=40179091
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101201271A Expired - Fee Related CN101318783B (en) | 2008-07-22 | 2008-07-22 | Activation method for coal gangue burned ash |
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| CN (1) | CN101318783B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105601134A (en) * | 2015-12-19 | 2016-05-25 | 湖南科技大学 | Method for full use of coal gangue for preparing cement |
| CN108609986A (en) * | 2018-05-16 | 2018-10-02 | 辽宁大学 | A kind of preparation method and application of the eco-concrete based on discarded gangue |
| CN113108602A (en) * | 2021-04-15 | 2021-07-13 | 韶关市柏林再生资源开发有限公司 | Novel activation calcining kiln for coal gangue |
| CN117398985A (en) * | 2023-10-19 | 2024-01-16 | 北京铝能清新环境技术有限公司 | Active alumina carrier sphere in hydrolysis catalyst and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061951C (en) * | 1997-01-08 | 2001-02-14 | 中国建筑材料科学研究院水泥所阳泉联营特种水泥厂 | Super high strength quick hardening sulfaluminous cement |
| CN1263701C (en) * | 2004-12-23 | 2006-07-12 | 戴春来 | Method for producing thermally insulating powder of construction wall body from gangues |
-
2008
- 2008-07-22 CN CN2008101201271A patent/CN101318783B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105601134A (en) * | 2015-12-19 | 2016-05-25 | 湖南科技大学 | Method for full use of coal gangue for preparing cement |
| CN108609986A (en) * | 2018-05-16 | 2018-10-02 | 辽宁大学 | A kind of preparation method and application of the eco-concrete based on discarded gangue |
| CN113108602A (en) * | 2021-04-15 | 2021-07-13 | 韶关市柏林再生资源开发有限公司 | Novel activation calcining kiln for coal gangue |
| CN113108602B (en) * | 2021-04-15 | 2021-12-17 | 韶关市柏林再生资源开发有限公司 | Novel activation calcining kiln for coal gangue |
| CN117398985A (en) * | 2023-10-19 | 2024-01-16 | 北京铝能清新环境技术有限公司 | Active alumina carrier sphere in hydrolysis catalyst and preparation method thereof |
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|---|---|
| CN101318783B (en) | 2011-02-16 |
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