CN106746822B - A kind of chemical preparation process of activity gangue - Google Patents

A kind of chemical preparation process of activity gangue Download PDF

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Publication number
CN106746822B
CN106746822B CN201611103135.6A CN201611103135A CN106746822B CN 106746822 B CN106746822 B CN 106746822B CN 201611103135 A CN201611103135 A CN 201611103135A CN 106746822 B CN106746822 B CN 106746822B
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gangue
processing
activator
activity
coal
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CN106746822A (en
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赵亮
李超
高成伟
袁进
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Research Center for Eco Environmental Sciences of CAS
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Research Center for Eco Environmental Sciences of CAS
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/12—Waste materials; Refuse from quarries, mining or the like
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/023—Chemical treatment
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Silicon Compounds (AREA)

Abstract

A kind of chemical preparation process of activity gangue, belong to gangue reutilization technology field, solve the disadvantage that tight, comprehensive activation effect difference of the height of energy consumption present in existing activating coal gangue technology, ingredient requirement etc., solution are as follows: 1) gangue pre-processes；2) preparation of activator；3) prepared activator aqueous solution is uniformly sprayed in gangue powder, static obtained active gangue after stirring.Compared with prior art, the present invention it is lower to coal shale in brick making component requirements, energy consumption can be substantially reduced and substantially eliminate the environmental pollution of calcination process；Selected activating reagent does not have corrosivity, is easy to deploy production；Chemical activating process is more loose to carbon content requirement in gangue, not only can handle the gangue met the requirements after pretreatment, can also directly handle the coal shale in brick making met the requirements, has practical value to widen the application field of gangue raw material.

Description

A kind of chemical preparation process of activity gangue
Technical field
The invention belongs to gangue reutilization technology field, in particular to a kind of chemical preparation process of active gangue.
Background technique
With the development that world economy high speed is swift and violent, demand of all trades and professions to the energy is increasing, and coal is as mesh The huge solid fuel of reserves, all has been favored by people all the time on former world, become daily life and production can not or Scarce Energy supply material.But it with a large amount of exploitations of coal, is continuously opened by the solid waste of representative of gangue Extraction comes, and since its carbon content is lower, contains a large amount of clay minerals simultaneously, be not easy to do Energy supply material.Therefore, largely appointed Meaning is stacked, and a large amount of soil and farmland are on the one hand not only occupied, and the gangue of another aspect bulk deposition tends to occur certainly Combustion, generates toxic gas and a large amount of dust, these substances are dissolved in atmosphere and soil, causes to neighbouring ecological environment serious Pollution.
It comprehensively utilizes according to the gangue proposed in " the gangue comprehensive utilization management method " of country's publication with large benefit With attaching most importance to, by coal gangue power generation, gangue building materials and product, large benefit such as backfill and coal gangue hill harmless treatment of reclaiming Use bastard coal Stone technique as main direction.Gangue is used as cement mixture and belongs to gangue in the important application side of building materials field To, need to carry out gangue activity excitation, active mode include forged burn, highly basic effect, mechanical grinding and two or more Hybrid mode.Forged burned coal gangue activation effect is preferable, but it is too high to consume energy, and economic feasibility is poor；Highly basic acts on bastard coal Stone is more demanding to feed carbon content, generally requires that gangue is not carbon containing or phosphorus content is lower, otherwise can give building material product band Carry out long-term safety hidden danger；The comprehensive activation effect of mechanical grinding gangue is poor, is only used as the complementary means of activation at present.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, provides a kind of chemical preparation process of active gangue, Solve the disadvantage that tight, comprehensive activation effect difference of the height of energy consumption present in existing activating coal gangue technology, ingredient requirement etc..
The present invention is achieved by the following technical solutions: a kind of chemical preparation process of activity gangue, it is by following Step composition:
1) gangue pre-processes: using and either physically or chemically successively carries out at carbonization treatment and desulfurization to coal shale in brick making Reason, makes its loss on ignition≤8%, SO3Content≤3.5%, 80 μm of square hole screens tail over≤10%, it is described either physically or chemically include but It is not limited only to jigging processing, chute processing, shaking table processing and flotation processing；
2) the naphthalene system, 0.0102%~0.0130% that mass fraction is 0.1987%~0.2518% preparation of activator: are taken Melamine, 0.0095%~0.0145% sodium metasilicate, 0.1891%~0.2658% miberal powder are uniformly mixed, and are formulated as dense The activator aqueous solution that degree is 0.3%~0.8%；
3) by prepared activator aqueous solution be uniformly sprayed in 5min mass fraction be 99.4714%~ In 99.5591% gangue powder, 2~4h is stirred by blender, blender revolving speed is 30~60r/min, after stirring Activity gangue is made in static 24~48h.
Compared with prior art, the present invention it is lower to coal shale in brick making component requirements, it can handle high-carbon high-sulfur content Gangue, coal shale in brick making by decarburization, after desulfurization process, loss on ignition, sulphur etc. be down to reasonable level (loss on ignition≤8.0%, SO3Content≤3.5%), carbon, the sulphur sloughed can be used as industry byproduct, and desulfurization and decarburization belongs to physical process, removes compared to calcining Carbon, sulphur removal mode can substantially reduce energy consumption and substantially eliminate the environmental pollution of calcination process；Activating reagent selected by the present invention and existing There is alkali activator to compare, does not have corrosivity, be easy to deploy production；Chemical activating process of the invention contains carbon in gangue Amount requires more loose (loss on ignition≤8.0%), not only can handle and meets the requirements (loss on ignition≤8.0%, SO after pretreatment3 Content≤3.5%) gangue, can also directly handle and meet the requirements (loss on ignition≤8.0%, SO3Content≤3.5%) bastard coal Stone raw material has practical value to widen the application field of gangue raw material.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment.
Embodiment 1
The chemical preparation process of active gangue in the present embodiment, it is made of the following steps:
1) gangue pre-processes: using and either physically or chemically successively carries out at carbonization treatment and desulfurization to coal shale in brick making Reason, makes its loss on ignition≤8%, SO3Content≤3.5%, 80 μm of square hole screens tail over≤10%, it is described either physically or chemically include but It is not limited only to jigging processing, chute processing, shaking table processing and flotation processing；
2) preparation of activator: take mass fraction be 0.2518% naphthalene system, 0.013% melamine, 0.0145% silicon Sour sodium, 0.2493% miberal powder are uniformly mixed, and are formulated as the activator aqueous solution that concentration is 0.3%；
3) prepared activator aqueous solution is uniformly sprayed to the gangue that mass fraction is 99.4714% in 5min In powder, by blender stir 2h, blender revolving speed be 30r/min, after stirring it is static for 24 hours, be made activity gangue.
Embodiment 2
The chemical preparation process of active gangue in the present embodiment, it is made of the following steps:
1) gangue pre-processes: using and either physically or chemically successively carries out at carbonization treatment and desulfurization to coal shale in brick making Reason, makes its loss on ignition≤8%, SO3Content≤3.5%, 80 μm of square hole screens tail over≤10%, it is described either physically or chemically include but It is not limited only to jigging processing, chute processing, shaking table processing and flotation processing；
2) preparation of activator: taking mass fraction is 0.1987% naphthalene system, 0.0102% melamine, 0.0095% Sodium metasilicate, 0.2225% miberal powder are uniformly mixed, and are formulated as the activator aqueous solution that concentration is 0.8%；
3) prepared activator aqueous solution is uniformly sprayed to the gangue that mass fraction is 99.5591% in 5min In powder, 4h is stirred by blender, blender revolving speed is 60r/min, static 48h after stirring, and activity gangue is made.
Embodiment 3
The chemical preparation process of active gangue in the present embodiment, it is made of the following steps:
1) gangue pre-processes: using and either physically or chemically successively carries out at carbonization treatment and desulfurization to coal shale in brick making Reason, makes its loss on ignition≤8%, SO3Content≤3.5%, 80 μm of square hole screens tail over≤10%, it is described either physically or chemically include but It is not limited only to jigging processing, chute processing, shaking table processing and flotation processing；
2) preparation of activator: take mass fraction be 0.2353% naphthalene system, 0.013% melamine, 0.0145% silicon Sour sodium, 0.2658% miberal powder are uniformly mixed, and are formulated as the activator aqueous solution that concentration is 0.5%；
3) prepared activator aqueous solution is uniformly sprayed to the gangue that mass fraction is 99.4714% in 5min In powder, 2.5h is stirred by blender, blender revolving speed is 40r/min, static 30h after stirring, and activity bastard coal is made Stone.
Embodiment 4
The chemical preparation process of active gangue in the present embodiment, it is made of the following steps:
1) gangue pre-processes: using and either physically or chemically successively carries out at carbonization treatment and desulfurization to coal shale in brick making Reason, makes its loss on ignition≤8%, SO3Content≤3.5%, 80 μm of square hole screens tail over≤10%, it is described either physically or chemically include but It is not limited only to jigging processing, chute processing, shaking table processing and flotation processing；
2) preparation of activator: take mass fraction be 0.24% naphthalene system, 0.012% melamine, 0.0135% silicic acid Sodium, 0.1891% miberal powder are uniformly mixed, and are formulated as the activator aqueous solution that concentration is 0.6%；
3) prepared activator aqueous solution is uniformly sprayed to the gangue that mass fraction is 99.5454% in 5min In powder, 3h is stirred by blender, blender revolving speed is 50r/min, static 40h after stirring, and activity gangue is made.
The spirit or essence that the present invention can be embodied in a variety of forms without departing from invention, it should therefore be appreciated that on It states embodiment and is not limited to details above-mentioned, and should widely be explained in the limited range of claim, therefore fall into right and want Ask or its equivalent scope in change and modification should be covered by the following claims.

Claims (1)

1. a kind of chemical preparation process of activity gangue, it is characterised in that: it is made of the following steps:
1) gangue pre-processes: it uses and carbonization treatment and desulfurization process is successively either physically or chemically carried out to coal shale in brick making, Make its loss on ignition≤8%, SO3Content≤3.5%, 80 μm of square hole screens tail over≤10%, described either physically or chemically to include but not only It is limited to jigging processing, chute processing, shaking table processing and flotation processing；
2) preparation of activator: taking mass fraction is 0.1987%~0.2518% naphthalene system, 0.0102%~0.0130% trimerization Cyanamide, 0.0095%~0.0145% sodium metasilicate, 0.1891%~0.2658% miberal powder are uniformly mixed, and are formulated as concentration and are 0.3%~0.8% activator aqueous solution；
3) prepared activator aqueous solution is uniformly sprayed to mass fraction in 5min is 99.4714%~99.5591% In gangue powder, 2~4h is stirred by blender, blender revolving speed is 30~60r/min, static 24 after stirring~ Activity gangue is made in 48h.
CN201611103135.6A 2016-12-05 2016-12-05 A kind of chemical preparation process of activity gangue Active CN106746822B (en)

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Publication number Priority date Publication date Assignee Title
CN117209174A (en) * 2023-09-04 2023-12-12 铜陵铜冠建安新型环保建材科技有限公司 Gangue-based cementing material and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1250757A (en) * 1998-10-14 2000-04-19 余友谊 Active agent for fly ash concrete
CN103861725A (en) * 2014-03-24 2014-06-18 西安建筑科技大学 Sorting and treatment process for coal gangue all-resource utilization

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1250757A (en) * 1998-10-14 2000-04-19 余友谊 Active agent for fly ash concrete
CN103861725A (en) * 2014-03-24 2014-06-18 西安建筑科技大学 Sorting and treatment process for coal gangue all-resource utilization

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
煤矸石活化剂技术的应用研究;谭苏来等;《淮南职业技术学院学报》;20151231;第15卷(第2期);第6-10页
煤矸石高效活化剂的研制;马保国等;《材料科学与工程学报》;20060831;第24卷(第4期);第520-523页

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