CN107805062B - Preparation method of artificial landscape stone regenerated from coal gangue - Google Patents
Preparation method of artificial landscape stone regenerated from coal gangue Download PDFInfo
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- CN107805062B CN107805062B CN201711177776.0A CN201711177776A CN107805062B CN 107805062 B CN107805062 B CN 107805062B CN 201711177776 A CN201711177776 A CN 201711177776A CN 107805062 B CN107805062 B CN 107805062B
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
Abstract
The invention relates to the field of artificial landscape stone processing, in particular to a preparation method of artificial landscape stone regenerated from coal gangue, which comprises the following steps: sorting and classifying waste gangue lump materials; loading the sorted coal gangue lump materials into a roasting kiln, and closing a kiln door; and igniting the roasting kiln to roast the coal gangue lump materials, keeping the roasting temperature for 4-6 hours from the initial kiln temperature to 110-125 ℃, then heating to 850-1050 ℃, keeping for 24-32 hours, cooling to 300 ℃, keeping for 4-6 hours, then stopping the fire, cooling to the kiln temperature, opening a kiln door, and discharging from the kiln. The invention carries out roasting processing on coal mine waste coal gangue at a certain temperature, and has simple process and stable quality. The artificial landscape stone has the texture, patterns and colors similar to those of natural stone, is easy to obtain materials, simple to manufacture and low in cost, can prevent fire and insulate heat, can replace a large amount of natural landscape stone, and achieves the purposes of beautifying the living environment of people and maintaining natural ecological landscape.
Description
Technical Field
The invention relates to the field of artificial landscape stone processing, in particular to a preparation method of artificial landscape stone regenerated from coal gangue.
Background
The coal gangue is an inevitable product in the coal mining and processing processes, is the most main pollution source of mines, the utilization rate of the coal gangue in China is not up to 30 percent at present, a large amount of coal gangue is piled into mountains in the open air, occupies a large amount of land, pollutes the surrounding environment, causes harm to human health, and has serious social and environmental problems, which become the primary problem of environmental management in coal mining areas, along with the acceleration of national ecological green construction, beautiful landscape design, more and more usage of landscape stones and wider application, the mining of natural landscape stones can destroy the original ecological environment in large quantity, the mining cost is high, the price of the landscape stones is increased accordingly, the landscape greening engineering cost is extremely high, the artificial landscape stones are regenerated by the coal gangue, the waste is changed into valuable, the nation and the people are benefited, the waste of land resources is reduced, the environmental pollution is reduced, and the energy regeneration ecological environment friendliness, high social, economic and environmental benefits. The preparation of the artificial landscape stone by regeneration of the coal gangue is one of effective ways for disposal and utilization of solid wastes of mines.
At present, the coal gangue is mainly piled into mountains in the open air in China, the utilization rate is low, the coal gangue is easy to self-ignite, artificial volcanoes are formed, the artificial volcanoes are difficult to control, great damage is brought to the surrounding environment and human beings, the coal gangue is only used for making bricks in the building material industry, cement and the like are used in a small amount, the cement is used, the coal gangue can be used after being self-ignited and processed, and massive coal gangue discharged from a coal mine is directly used for producing other coal gangue.
Disclosure of Invention
The invention aims to provide a preparation method of artificial landscape stone by coal gangue regeneration, which is characterized in that the artificial landscape stone is prepared by utilizing waste coal gangue regeneration, and the coal gangue is roasted at a certain temperature to produce landscape stone with beautiful color, hard quality and low cost, so that the landscape stone completely replaces natural landscape stone, and the energy regeneration ecological environment friendliness is realized.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a preparation method of artificial landscape stone regenerated from coal gangue comprises the following steps:
s1, sorting and classifying the waste coal gangue lump materials;
s2, loading the sorted coal gangue lump materials into a roasting kiln, and closing a kiln door;
and S3, igniting the roasting kiln to roast the coal gangue lump materials, keeping the roasting temperature for 4-6 hours from the initial kiln temperature to 110-125 ℃, then heating to 850-1050 ℃, keeping for 24-32 hours, cooling to 300 ℃, keeping for 4-6 hours, then stopping heating, cooling to the kiln temperature, opening a kiln door, and taking out of the kiln.
The roasting temperature is increased from the initial kiln temperature to 110 ℃, kept for 6 hours, then heated to 850 ℃, kept for 24 hours, cooled to 300 ℃ and kept for 6 hours.
The roasting temperature is increased from the initial kiln temperature to 115 ℃, kept for 5.5 hours, then heated to 900 ℃, kept for 26 hours, cooled to 300 ℃, and kept for 5.5 hours.
And S1 is sorted into coal gangue lump materials of 100-500 cm.
And S2, closing the kiln door after three quarters of the effective volume of the kiln is layered and stacked when the kiln is loaded.
And washing, sorting and classifying the gangue lump materials after the gangue materials are taken out of the kiln.
The coal gangue is a black rock associated with a coal bed in coal-forming engineering, the carbon content of the black rock is lower and harder than that of coal, the ash content is more than 40-50%, the carbon content is 20-30%, and the coal gangue contains various minerals, kaolin, quartz, montmorillonite, chlorite and the like. The coal gangue has a stable crystal structure, particles in the molecule of the coal gangue are orderly arranged according to a certain rule, chemical components are stable, the carbon content of the roasted coal gangue is burnt, the internal crystal nucleus structure and the amorphous form of the coal gangue are changed, the activity of the coal gangue is improved, and the appearance of the coal gangue is changed along with the change of temperature. The activity, the color change and the microstructure change of the coal gangue before and after roasting are different in different temperatures and certain heat preservation time.
Compared with the prior art, the invention has the beneficial effects that:
the main mineral components of the unbaked coal gangue are quartz, anorthite, mica and kaolinite, and the unbaked coal gangue is a polymeric mineral with stable chemical composition and complete crystal form at normal temperature, wherein the quartz crystal accounts for 55-60%, the mineral components are not obviously changed after being baked at the temperature of 500-700 ℃, but the quartz strength is increased, because carbon in the coal gangue is burnt in the baking process, and the kaolinite and the muscovite remove-OH to generate amorphous substances, so that the content of the quartz crystal is increased relative to the total crystal amount, and the kaolinite is completely dehydrated after being baked at the temperature of 850 ℃, converts metakaolinite, forms active amorphous silicon oxide and aluminum oxide, and is white or grey.
The mineral composition did not change between 900 ℃ and 850 ℃. Almost inactive mullite crystals appear at 1000 ℃, anorthite crystals disappear at 1050 ℃, mullite and quartz are used as main minerals, and the mullite content is increased to some extent and appears white or grey-white. The various minerals are obviously changed at different temperatures due to the change of the internal structure and the external shape, quality, color and lines, and the shape has the original ecological state of stone shape, multiple postures and multiple forms and varieties. The color is mainly dark red, the color is bright and beautiful, white, gray and black stripes are accompanied, the texture is smooth, the lines are soft, and the texture is hard.
The landscape stone with beautiful color, hard quality and extremely low cost is produced by utilizing coal mine waste coal gangue through roasting processing at a certain temperature, and completely replaces natural landscape stone. The preparation method of the coal gangue regenerated artificial landscape stone provided by the invention is a roasting method of the coal gangue landscape stone with simple process and stable quality. The gangue landscape stone manufactured by the method has the advantages of fire prevention, heat insulation, good aesthetic effect and low manufacturing cost, the shape, the texture and the color of the manufactured landscape stone are almost the same as those of natural landscape stone, the stone can prevent fire and insulate heat, the materials are easy to obtain, the manufacture is simple, the environment can be protected and beautified, the waste is changed into valuable, the environmental pollution is reduced, the land resource waste is reduced, the ecological environment friendliness of energy production can be realized, and the ecological civilization is realized.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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 preparation method of artificial landscape stone regenerated from coal gangue comprises the following steps:
s1, sorting waste coal gangue lump materials into coal gangue lump materials of 100-500 cm, and separately stacking the coal gangue lump materials in a classified manner;
s2, loading the sorted gangue lump materials into a roasting kiln, stacking three quarters of the effective volume of the kiln in layers, and closing a kiln door;
and S3, igniting the roasting kiln to roast the coal gangue lump materials, keeping the roasting temperature for 6 hours from the initial kiln temperature to 110 ℃, then heating to 850 ℃, keeping for 24 hours, cooling to 300 ℃, keeping for 6 hours, then stopping the fire, cooling to the kiln temperature, opening a kiln door, and taking out the coal gangue lump materials from the kiln.
And S4, washing and sorting the coal gangue discharged from the kiln, and respectively stacking landscape stones of the same type and the same color to obtain the landscape stones which are beautiful, hard, different in size and shape and have dark gray white stripes.
Example 2
A preparation method of artificial landscape stone regenerated from coal gangue comprises the following steps:
s1, sorting waste coal gangue lump materials into coal gangue lump materials of 100-500 cm, and separately stacking the coal gangue lump materials in a classified manner;
s2, loading the sorted gangue lump materials into a roasting kiln, stacking three quarters of the effective volume of the kiln in layers, and closing a kiln door;
and S3, igniting the roasting kiln to roast the coal gangue lump materials, keeping the roasting temperature for 5.5 hours from the initial kiln temperature to 115 ℃, heating to 900 ℃, keeping for 26 hours, cooling to 300 ℃, keeping for 5.5 hours, stopping the fire, cooling to the kiln temperature, opening a kiln door, and discharging from the kiln.
And S4, washing and sorting the coal gangue discharged from the kiln, and respectively stacking landscape stones of the same type and the same color to obtain the landscape stones which are beautiful, hard, different in size and shape and gray-white in layered stripes.
Example 3
A preparation method of artificial landscape stone regenerated from coal gangue comprises the following steps:
s1, sorting waste coal gangue lump materials into coal gangue lump materials of 100-500 cm, and separately stacking the coal gangue lump materials in a classified manner;
s2, loading the sorted gangue lump materials into a roasting kiln, stacking three quarters of the effective volume of the kiln in layers, and closing a kiln door;
and S3, igniting the roasting kiln to roast the coal gangue lump materials, keeping the roasting temperature for 5 hours from the initial kiln temperature to 120 ℃, then heating to 950 ℃, keeping for 28 hours, cooling to 300 ℃, keeping for 5 hours, stopping the fire, cooling to the kiln temperature, opening a kiln door, and taking out the coal gangue lump materials from the kiln.
And S4, washing and sorting the coal gangue taken out of the kiln, and respectively stacking landscape stones with the same color in the same kind to obtain the landscape stones which are beautiful, hard, different in size and shape, and have brown-red and gray-white layered stripes.
Example 4
A preparation method of artificial landscape stone regenerated from coal gangue comprises the following steps:
s1, sorting waste coal gangue lump materials into coal gangue lump materials of 100-500 cm, and separately stacking the coal gangue lump materials in a classified manner;
s2, loading the sorted gangue lump materials into a roasting kiln, stacking three quarters of the effective volume of the kiln in layers, and closing a kiln door;
and S3, igniting the roasting kiln to roast the coal gangue lump materials, keeping the roasting temperature for 4.5-6 hours from the initial kiln temperature to 125 ℃, then heating to 1000 ℃, keeping for 30 hours, cooling to 300 ℃, keeping for 4.5 hours, then stopping the fire, cooling to the kiln temperature, opening a kiln door, and taking out of the kiln.
And S4, washing and sorting the coal gangue discharged from the kiln, and respectively stacking landscape stones with the same colors in the same kind to obtain the landscape stones which are beautiful, hard, different in size and shape, and have brown red and white stripes.
Example 5
A preparation method of artificial landscape stone regenerated from coal gangue comprises the following steps:
s1, sorting waste coal gangue lump materials into coal gangue lump materials of 100-500 cm, and separately stacking the coal gangue lump materials in a classified manner;
s2, loading the sorted gangue lump materials into a roasting kiln, stacking three quarters of the effective volume of the kiln in layers, and closing a kiln door;
and S3, igniting the roasting kiln to roast the coal gangue lump materials, keeping the roasting temperature for 4 hours from the initial kiln temperature to 125 ℃, heating to 1050 ℃, keeping the temperature for 24-32 hours, cooling to 300 ℃, keeping the temperature for 4 hours, stopping the fire, cooling to the kiln temperature, opening a kiln door, and discharging from the kiln.
And S4, washing and sorting the coal gangue discharged from the kiln, and respectively stacking landscape stones of the same type and the same color to obtain the landscape stones which are beautiful, hard, different in size and shape, and have black red and white stripes.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (6)
1. A preparation method of artificial landscape stone regenerated from coal gangue is characterized by comprising the following steps:
s1, sorting and classifying the waste coal gangue lump materials;
s2, loading the sorted coal gangue lump materials into a roasting kiln, and closing a kiln door;
and S3, igniting the roasting kiln to roast the coal gangue lump materials, keeping the roasting temperature for 4-6 hours from the initial kiln temperature to 110-125 ℃, then heating to 850-1050 ℃, keeping for 24-32 hours, cooling to 300 ℃, keeping for 4-6 hours, then stopping heating, cooling to the kiln temperature, opening a kiln door, and taking out of the kiln.
2. The preparation method of the coal gangue regenerated artificial landscape stone as claimed in claim 1, which is characterized in that: the roasting temperature is increased from the initial kiln temperature to 110 ℃, kept for 6 hours, then heated to 850 ℃, kept for 24 hours, cooled to 300 ℃ and kept for 6 hours.
3. The preparation method of the coal gangue regenerated artificial landscape stone as claimed in claim 1, which is characterized in that: the roasting temperature is increased from the initial kiln temperature to 115 ℃, kept for 5.5 hours, then heated to 900 ℃, kept for 26 hours, cooled to 300 ℃, and kept for 5.5 hours.
4. The preparation method of the coal gangue regenerated artificial landscape stone as claimed in claim 1, which is characterized in that: and S1 is sorted into coal gangue lump materials of 100-500 cm.
5. The preparation method of the coal gangue regenerated artificial landscape stone as claimed in claim 1, which is characterized in that: and S2, closing the kiln door after three quarters of the effective volume of the kiln is layered and stacked when the kiln is loaded.
6. The preparation method of the coal gangue regenerated artificial landscape stone as claimed in claim 1, which is characterized in that: and washing, sorting and classifying the gangue lump materials after the gangue materials are taken out of the kiln.
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| CN201711177776.0A CN107805062B (en) | 2017-11-23 | 2017-11-23 | Preparation method of artificial landscape stone regenerated from coal gangue |
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| CN201711177776.0A CN107805062B (en) | 2017-11-23 | 2017-11-23 | Preparation method of artificial landscape stone regenerated from coal gangue |
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| CN107805062B true CN107805062B (en) | 2020-09-29 |
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| CN101234885B (en) * | 2008-03-06 | 2010-11-03 | 朝阳华龙科建股份有限公司 | Coal gangue sintering porous decorative brick manufacturing method |
| CN101734905B (en) * | 2008-11-14 | 2012-07-04 | 郑州大学 | Coal gangue ceramic wall and ground brick and preparation method thereof |
| CN101475343B (en) * | 2009-01-21 | 2013-04-17 | 李石牛 | Raw material formula for preparing decorating tile from coal gangue and preparation |
| CN102491732B (en) * | 2011-12-14 | 2013-04-24 | 四川海吉尔环保科技开发有限公司 | Method for producing artificial vesuvianite block by using coal gangue as raw material |
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Effective date of registration: 20230922 Address after: 712000 Liu Jia Wan Village, Chengguan Street, Binzhou City, Xianyang City, Shaanxi Province (Yongfeng Yujingyuan 2nd Floor Shop) Patentee after: Binzhou Zhouyuan New Material Technology Co.,Ltd. Address before: Room 402, Unit 6, Building 5, Area A, Jiaruiyuan, Suburb of Yangquan City, Shanxi Province, 045016 Patentee before: Gao Guiming |