CN106746819A - A kind of slag modifying method - Google Patents

A kind of slag modifying method Download PDF

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Publication number
CN106746819A
CN106746819A CN201611252595.5A CN201611252595A CN106746819A CN 106746819 A CN106746819 A CN 106746819A CN 201611252595 A CN201611252595 A CN 201611252595A CN 106746819 A CN106746819 A CN 106746819A
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CN
China
Prior art keywords
slag
millimeter
plant
millimeters
flyash
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611252595.5A
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Chinese (zh)
Inventor
高文忠
郑海波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Gaodi Environmental Protection Co Ltd
Original Assignee
Anhui Gaodi Environmental Protection Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Gaodi Environmental Protection Co Ltd filed Critical Anhui Gaodi Environmental Protection Co Ltd
Priority to CN201611252595.5A priority Critical patent/CN106746819A/en
Publication of CN106746819A publication Critical patent/CN106746819A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • 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
    • 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
    • C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
    • 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)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

A kind of slag modifying method, its step is as follows：500 grams of the plant slag dried in 105 DEG C of drying boxes is taken, the distribution of particles of slag is as follows：The remaining analysis of slag screen:25 millimeter 0.38%, 20 millimeter 0.96%, 15 millimeter 0.77%, 10 millimeter 6.16%, 5 millimeter 13.68%, 2.5 millimeter 8.09%, 1.25 millimeter 3.47%, 0.63 millimeter 28.71%, chassis 37.78%；500 grams of plant slag is taken, 500*500 test mills are put into, a certain proportion of slag active surface agent, grinding 32 minutes is added, specific surface area is controlled 400 or so, and fineness 0.045 tails over control within 20 25.Slag after activation needs water ratio identical with power plant II flyash, and loss on ignition only has 0.84, smaller than II grade of flyash, harmful components are relatively small, the problem that plant slag is nowhere stacked and sold is not only solved, while also improving the value of slag, considerable economic worth is produced.

Description

A kind of slag modifying method
Technical field
The present invention relates to slag applied technical field, specifically a kind of slag modifying method.
Background technology
Thermal power plant after coal combustion per ton therein, has generated largely ash content by coal fired power generation, often burns one ton Coal slightly produces 25% flyash and 2.5% slag, but II flyash of power plant is generally used for mixing plant production concrete and uses Used with production cement, and the slag of power plant is poor due to grindability, cement plant also fewer and feweri, and the stacking of substantial amounts of slag Just into the worry of coal-burning power plant, therefore, it is necessary to by the activation to plant slag, turn waste into wealth.
The content of the invention
It is an object of the invention to provide a kind of slag modifying method, the slag after it is activated needs water ratio and the flyash of power plant II It is identical, and intensity activity improves 2.8%, loss on ignition only has 0.84, smaller than II grade of flyash, and harmful components are relatively small.
The purpose of the present invention is achieved through the following technical solutions：A kind of slag modifying method, its step is as follows：
1st, 500 grams of the plant slag dried in 105 DEG C of drying boxes is taken, the distribution of particles of slag is as follows：The remaining analysis of slag screen:25 0.38%, 20 millimeters 0.96%, 15 millimeters 0.77%, 10 millimeters 6.16%, 5 millimeters 13.68%, 2.5 millimeters 8.09%, 1.25 millis of millimeter Rice 3.47%, 0.63 millimeter 28.71%, chassis 37.78%；
2nd, 500 grams of plant slag is taken, 500*500 test mills are put into, a certain proportion of slag active surface agent, grinding 32 is added Minute, 400 or so, fineness 0.045 tails over control within 20-25% for specific surface area control.
Activate the chemical composition analysis such as following table of slag：
LOSS SiO2 Fe2O3 Al2O3 CaO MgO f-CaO CL-
Activation slag 0.84 56.01 6.98 27.28 5.32 0.88 0.15 0.002
Beneficial effects of the present invention：Slag after activation needs water ratio identical with power plant II flyash, and loss on ignition only has 0.84, than II Level flyash is small, and harmful components are relatively small, not only solve the problem that plant slag is nowhere stacked and sold, while also improving The value of slag, produces considerable economic worth.
Specific embodiment
Experiment raw material：
Plant slag
The flyash of power plant II
Iso standard sand
Water（It is neutral）
Clinker (28 days intensity 58MPa)
Gypsum.
Test apparatus:
500*500 test mills
The joint-trials of 40*40*160 tri- grind
Cement mortar agitated kettle
Cement mortar mixer
Instrument for testing fluidity of colloidal cement sand
Agitator for cement mortar
Cement paste agitated kettle
Blain specific surface instrument
Electronic analytical balance（A ten thousandth）
Cement constant-temp. and-moisture maintenance
Fall autoamtic cement pressure test machine
Electric bending testing machine
Automatic maintenance room
Maintenance tank
High temperature furnace
Drying box
Sealed type sample pulverizer, analysis sampling machine.
Test procedure：
1st, 500 grams of the plant slag dried in 105 DEG C of drying boxes is taken, the distribution of particles of slag is as follows：The remaining analysis of slag screen:25 0.38%, 20 millimeters 0.96%, 15 millimeters 0.77%, 10 millimeters 6.16%, 5 millimeters 13.68%, 2.5 millimeters 8.09%, 1.25 millis of millimeter Rice 3.47%, 0.63 millimeter 28.71%, chassis 37.78%.
2nd, 500 grams of plant slag is taken, 500*500 test mills are put into, a certain proportion of slag active surface agent, powder is added Mill 32 minutes, 400 or so, fineness 0.045 tails over control within 20-25% for specific surface area control, fineness and II grade of flyash Equally.Surfactant is formulated by A, B, industrial wastes C, acid, alkali with certain proportion and program, concentration 40%, PH=8, close Degree:1.12g/cm3, the raw material such as including triethanolamine, triisopropanolamine, ethylene glycol.
Activate the chemical composition analysis such as following table of slag：
LOSS SiO2 Fe2O3 Al2O3 CaO MgO f-CaO CL-
II flyash 1.12 58.31 4.42 29.86 2.44 0.72 0.27 0.001
Activation slag 0.84 56.01 6.98 27.28 5.32 0.88 0.15 0.002
By the way that from the point of view of the chemical composition analysis data for activating II grade of flyash of slag and power plant, composition is close, and activation slag Loss on ignition there was only 0.84, it is also smaller than II grade of flyash 1.12, so to substitute flyash more preferably, harmful components are relatively It is small.
Conclusion：
1st, after plant slag activation, from the point of view of the data of intensity and chemical analysis, and II grade of ash of power plant's selection by winnowing is close.
2nd, by strength test, it is entirely capable of substituting II grade of flyash, is applied in cement and concrete.
3rd, activation slag replaces II grade of flyash, not only solves the problem that plant slag is nowhere stacked and sold, while The value of slag is also improved, considerable economic worth is produced.
4th, by activating slag, the space that the industrial residue do not sold originally is utilized makes the airborne dust stacked originally Place becomes clear water blue sky, improves the air quality of locality, is that environmental protection lays a solid foundation.

Claims (1)

1. a kind of slag modifying method, it is characterised in that its step is as follows：
1st, 500 grams of the plant slag dried in 105 DEG C of drying boxes is taken, the distribution of particles of slag is as follows：The remaining analysis of slag screen:25 0.38%, 20 millimeters 0.96%, 15 millimeters 0.77%, 10 millimeters 6.16%, 5 millimeters 13.68%, 2.5 millimeters 8.09%, 1.25 millis of millimeter Rice 3.47%, 0.63 millimeter 28.71%, chassis 37.78%；
2nd, 500 grams of plant slag is taken, 500*500 test mills are put into, a certain proportion of slag active surface agent, grinding 32 is added Minute, 400 or so, fineness 0.045 tails over control within 20-25% for specific surface area control；
Activate the chemical composition analysis such as following table of slag：
LOSS SiO2 Fe2O3 Al2O3 CaO MgO f-CaO CL- Activation slag 0.84 56.01 6.98 27.28 5.32 0.88 0.15 0.002
CN201611252595.5A 2016-12-30 2016-12-30 A kind of slag modifying method Pending CN106746819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611252595.5A CN106746819A (en) 2016-12-30 2016-12-30 A kind of slag modifying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611252595.5A CN106746819A (en) 2016-12-30 2016-12-30 A kind of slag modifying method

Publications (1)

Publication Number Publication Date
CN106746819A true CN106746819A (en) 2017-05-31

Family

ID=58928568

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611252595.5A Pending CN106746819A (en) 2016-12-30 2016-12-30 A kind of slag modifying method

Country Status (1)

Country Link
CN (1) CN106746819A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107473615A (en) * 2017-08-28 2017-12-15 安宁鼎翔新材料科技有限公司 A kind of method that flyash in concrete is directly substituted using cinder of electric power plant
CN113929423A (en) * 2021-11-30 2022-01-14 内蒙古工业大学 Method for preparing early-strength filling body by using all solid waste of coal-fired power plant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107473615A (en) * 2017-08-28 2017-12-15 安宁鼎翔新材料科技有限公司 A kind of method that flyash in concrete is directly substituted using cinder of electric power plant
CN113929423A (en) * 2021-11-30 2022-01-14 内蒙古工业大学 Method for preparing early-strength filling body by using all solid waste of coal-fired power plant

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Application publication date: 20170531