CN110683833A - Ceramsite process taking iron tailings as main raw material - Google Patents

Ceramsite process taking iron tailings as main raw material Download PDF

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Publication number
CN110683833A
CN110683833A CN201911098032.9A CN201911098032A CN110683833A CN 110683833 A CN110683833 A CN 110683833A CN 201911098032 A CN201911098032 A CN 201911098032A CN 110683833 A CN110683833 A CN 110683833A
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CN
China
Prior art keywords
raw material
ceramsite
raw materials
iron tailings
tailings
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
CN201911098032.9A
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Chinese (zh)
Inventor
王荣林
樊传刚
裴立宅
张伟
王欢
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 Maanshan Iron and Steel Mining Resources Group Co Ltd
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Anhui Maanshan Iron and Steel Mining Resources Group Co Ltd
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Application filed by Anhui Maanshan Iron and Steel Mining Resources Group Co Ltd filed Critical Anhui Maanshan Iron and Steel Mining Resources Group Co Ltd
Priority to CN201911098032.9A priority Critical patent/CN110683833A/en
Publication of CN110683833A publication Critical patent/CN110683833A/en
Pending legal-status Critical Current

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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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/16—Lean materials, e.g. grog, quartz
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/1328—Waste materials; Refuse; Residues without additional clay
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/135—Combustion residues, e.g. fly ash, incineration waste
    • C04B33/1352—Fuel ashes, e.g. fly ash
    • 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
    • C04B33/00—Clay-wares
    • C04B33/24—Manufacture of porcelain or white ware
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • 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
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a ceramsite process taking iron tailings as a main raw material. The ceramsite process taking the iron tailings as the main raw material is characterized by comprising the following steps of: s1, firstly, adding water into the uniformly mixed powdery raw materials, and stirring to uniformly mix the raw materials and the water; s2, balling the uniformly mixed raw materials, and drying the raw material balls in a drying oven at 100 ℃ for 4-8 h; s3, placing the dried raw material balls in a box-type resistance furnace, pre-burning for 20min at 500 ℃, then heating to 1100 ℃, and calcining for 30min at the heating rate of 5 ℃/min. The ceramsite process with the iron tailings as the main raw material can be used for preparing tailing ceramsite with the iron tailings as the main raw material, the prepared ceramsite is suitable for building materials, can replace stones to be used as coarse aggregates, has the effects of saving and protecting the environment, and a large amount of fine tailings are utilized in the production process, so that the harm of the tailings to the ecological environment is solved, and the realization of a green tailless mine is promoted.

Description

Ceramsite process taking iron tailings as main raw material
Technical Field
The invention relates to the technical field of aggregate for buildings, in particular to a ceramsite process taking iron tailings as a main raw material.
Background
In the mineral resource processing process, a large amount of tailings can be discharged, although part of tailings can be injected into a waste mine roadway through a solidification filling mode to carry out tailing solidification filling, the cost of fine-grained tailings solidification filling is continuously increased along with the increase of the using amount of a solidification material, meanwhile, a large amount of residual fine-grained tailings are discharged into a tailing pond to be stockpiled, according to the existing disposal mode of tailing warehousing and stockpiling, a large amount of land is occupied, the disposal cost is high, environmental and safety hazards exist, a new tailing recycling technology is urgently needed to comprehensively utilize the tailings, the total cost of tailing disposal is reduced through comprehensive utilization and benefit generation, and the ecological environment safety is protected.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a ceramsite process taking iron tailings as a main raw material, which solves the problems that the cost of curing and filling fine tailings is continuously increased along with the increase of the using amount of curing materials, and simultaneously, a large amount of residual fine tailings are discharged into a tailing pond for stockpiling.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a ceramsite process taking iron tailings as a main raw material comprises the following steps:
s1, firstly, adding water into the uniformly mixed powdery raw materials, and stirring to uniformly mix the raw materials and the water;
s2, balling the uniformly mixed raw materials, and drying the raw material balls in a drying oven at 100 ℃ for 4-8 h;
s3, placing the dried raw material balls in a box-type resistance furnace, pre-burning for 20min at 500 ℃, then heating to 1100 ℃, and calcining for 30min at the heating rate of 5 ℃/min;
and S4, placing the pellets obtained in the step S3 indoors for natural cooling.
Preferably, in step S1, the raw materials are in the following mass percentages: 70-100% of tailings raw materials, 3-20% of sludge and 6-20% of fly ash, wherein the iron tailings raw materials mainly comprise SiO2, MgO and Fe2O3, and the contents are as follows: 41.98%, 18.09% and 11.92%. The water content is more than 80 wt%.
(III) advantageous effects
The invention provides a ceramsite process taking iron tailings as a main raw material. The method has the following beneficial effects:
the ceramsite process with the iron tailings as the main raw material can be used for preparing tailing ceramsite with the iron tailings as the main raw material, the prepared ceramsite is suitable for building materials, can replace stones to be used as coarse aggregates, has the effects of saving and protecting the environment, and a large amount of fine tailings are utilized in the production process, so that the harm of the tailings to the ecological environment is solved, and the realization of a green tailless mine is promoted.
Detailed Description
The described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A ceramsite process taking iron tailings as a main raw material is characterized by comprising the following steps:
s1, firstly, adding water into the uniformly mixed powdery raw materials, and stirring to uniformly mix the raw materials with the water (wherein 100% of iron tailings are used as raw materials, the main components of the iron tailings are SiO2, MgO and Fe2O3, the contents of the raw materials are 41.98%, 18.09% and 11.92%, respectively, and the water content is more than 80 wt%);
s2, balling the uniformly mixed raw materials, and drying the raw material balls in a drying oven at 100 ℃ for 4-8 h;
s3, placing the dried raw material balls in a box-type resistance furnace, pre-burning for 20min at 500 ℃, then heating to 1100 ℃, and calcining for 30min at the heating rate of 5 ℃/min;
and S4, placing the pellets obtained in the step S3 indoors for natural cooling.
Example 2
A ceramsite process taking iron tailings as a main raw material is characterized by comprising the following steps:
s1, firstly, adding water into the uniformly mixed powdery raw materials, and stirring to uniformly mix the raw materials with the water (wherein 90% of iron tailings and 10% of sludge are used as raw materials, the main components of the iron tailings are SiO2, MgO and Fe2O3, the contents are 41.98%, 18.09% and 11.92%, respectively, and the water content is more than 80 wt%);
s2, balling the uniformly mixed raw materials, and drying the raw material balls in a drying oven at 100 ℃ for 4-8 h;
s3, placing the dried raw material balls in a box-type resistance furnace, pre-burning for 20min at 500 ℃, then heating to 1100 ℃, and calcining for 30min at the heating rate of 5 ℃/min;
and S4, placing the pellets obtained in the step S3 indoors for natural cooling.
Example 3
A ceramsite process taking iron tailings as a main raw material is characterized by comprising the following steps:
s1, firstly, adding water into the uniformly mixed powdery raw materials, and stirring to uniformly mix the raw materials with the water (wherein 70% of iron tailings, 10% of sludge and 20% of fly ash are used as raw materials, the main components of the iron tailings are SiO2, MgO and Fe2O3, the contents are 41.98%, 18.09% and 11.92%, respectively, and the water content exceeds 80 wt%);
s2, balling the uniformly mixed raw materials, and drying the raw material balls in a drying oven at 100 ℃ for 4-8 h;
s3, placing the dried raw material balls in a box-type resistance furnace, pre-burning for 20min at 500 ℃, then heating to 1100 ℃, and calcining for 30min at the heating rate of 5 ℃/min;
and S4, placing the pellets obtained in the step S3 indoors for natural cooling.
The details of the products obtained in examples 1 to 3 are as follows:
example 1: full tailing potteryBulk density of the pellets 1245.56kg m-3The cylinder pressure was 14.3MPa and the softening coefficient was 0.94.
Example 2: the bulk density of the tailing/sludge ceramsite is 1036.57kg m-3A cylinder pressure of 10.1MPa and a softening coefficient of 0.87.
Example 3: the bulk density of the tailing/sludge/fly ash ceramsite is 1052.75kg m-3A cylinder pressure of 9.5MPa and a softening coefficient of 0.87.
In summary, the ceramsite process using the iron tailings as the main raw material can be used for preparing tailing ceramsite using the iron tailings as the main raw material, the prepared ceramsite is suitable for building materials, can replace stones to be used as coarse aggregates, has the effects of saving and protecting the environment, and a large amount of fine tailings are utilized in the production process, so that the harm of the tailings to the ecological environment is solved, and the realization of green tailings-free mines is promoted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (2)

1. A ceramsite process taking iron tailings as a main raw material is characterized by comprising the following steps:
s1, firstly, adding water into the uniformly mixed powdery raw materials, and stirring to uniformly mix the raw materials and the water;
s2, balling the uniformly mixed raw materials, and drying the raw material balls in a drying oven at 100 ℃ for 4-8 h;
s3, placing the dried raw material balls in a box-type resistance furnace, pre-burning for 20min at 500 ℃, then heating to 1100 ℃, and calcining for 30min at the heating rate of 5 ℃/min;
and S4, placing the pellets obtained in the step S3 indoors for natural cooling.
2. The ceramsite process using iron tailings as a main raw material according to claim 1, wherein the ceramsite process comprises the following steps: in step S1, the raw materials are in mass percent: 70-100% of tailings raw materials, 3-20% of sludge and 6-20% of fly ash, wherein the iron tailings raw materials mainly comprise SiO2, MgO and Fe2O3, and the contents are as follows: 41.98%, 18.09% and 11.92%. The water content is more than 80 wt%.
CN201911098032.9A 2019-11-12 2019-11-12 Ceramsite process taking iron tailings as main raw material Pending CN110683833A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112159238A (en) * 2020-09-15 2021-01-01 江苏大丰新安德矿业有限公司 Magnetic roasting iron-selecting tailing ceramsite and preparation method thereof
CN113135679A (en) * 2021-04-16 2021-07-20 成都中弘轨道交通环保产业股份有限公司 Composition formula for firing ceramsite by using nepheline tailings and preparation method thereof
CN113213890A (en) * 2021-06-24 2021-08-06 东北大学秦皇岛分校 Architectural ceramic tile prepared by using fine iron tailing powder and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001010857A (en) * 1999-06-25 2001-01-16 Rock Plant Kk Production of sintered compact using waste
CN104876625A (en) * 2015-05-27 2015-09-02 中钢集团马鞍山矿山研究院有限公司 Method for preparing ultralight ceramsites from clay iron-containing tailings
CN106242514A (en) * 2016-08-05 2016-12-21 中国科学院过程工程研究所 A kind of composite solid waste light high-strength ceramic granule and preparation method thereof
CN109111208A (en) * 2018-09-27 2019-01-01 广东工业大学 A kind of iron tailing baked brick and preparation method thereof
CN110066126A (en) * 2019-05-29 2019-07-30 东北大学秦皇岛分校 Construction material iron tailings haydite and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001010857A (en) * 1999-06-25 2001-01-16 Rock Plant Kk Production of sintered compact using waste
CN104876625A (en) * 2015-05-27 2015-09-02 中钢集团马鞍山矿山研究院有限公司 Method for preparing ultralight ceramsites from clay iron-containing tailings
CN106242514A (en) * 2016-08-05 2016-12-21 中国科学院过程工程研究所 A kind of composite solid waste light high-strength ceramic granule and preparation method thereof
CN109111208A (en) * 2018-09-27 2019-01-01 广东工业大学 A kind of iron tailing baked brick and preparation method thereof
CN110066126A (en) * 2019-05-29 2019-07-30 东北大学秦皇岛分校 Construction material iron tailings haydite and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112159238A (en) * 2020-09-15 2021-01-01 江苏大丰新安德矿业有限公司 Magnetic roasting iron-selecting tailing ceramsite and preparation method thereof
CN113135679A (en) * 2021-04-16 2021-07-20 成都中弘轨道交通环保产业股份有限公司 Composition formula for firing ceramsite by using nepheline tailings and preparation method thereof
CN113213890A (en) * 2021-06-24 2021-08-06 东北大学秦皇岛分校 Architectural ceramic tile prepared by using fine iron tailing powder and preparation method thereof

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Application publication date: 20200114