CN113061015A - Method for preparing artificial decorative stone by utilizing manganese-silicon alloy hot-melt slag - Google Patents
Method for preparing artificial decorative stone by utilizing manganese-silicon alloy hot-melt slag Download PDFInfo
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- CN113061015A CN113061015A CN202110323575.7A CN202110323575A CN113061015A CN 113061015 A CN113061015 A CN 113061015A CN 202110323575 A CN202110323575 A CN 202110323575A CN 113061015 A CN113061015 A CN 113061015A
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- manganese
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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
- C04B32/00—Artificial stone not provided for in other groups of this subclass
- C04B32/005—Artificial stone obtained by melting at least part of the composition, e.g. metal
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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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/144—Slags from the production of specific metals other than iron or of specific alloys, e.g. ferrochrome slags
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Silicon Compounds (AREA)
Abstract
The invention belongs to the field of manganese-silicon alloy hot slag treatment, and particularly discloses a method for preparing artificial decorative stone by utilizing manganese-silicon alloy hot slag, which comprises the following steps: s1, synchronously adding the manganese-silicon alloy hot slag and a clarifying agent into a quenching and tempering electrolytic furnace to obtain mixed slag, keeping the temperature in the quenching and tempering electrolytic furnace between 1100 ℃ and 1600 ℃, and uniformly mixing and heating for 1-4 h; s2, pouring the mixed slag into a mold, quickly transferring the mold into a crystallization furnace, controlling the temperature of the crystallization furnace to be between 800 and 1300 ℃, and preserving heat for 1 to 3 hours to obtain crystals; s3, after the heat preservation is finished, stopping heating of the crystallization furnace, and after the temperature of the crystallization furnace is naturally cooled to the room temperature, withdrawing the mold from the crystallization furnace; s4, taking the cooled crystal out of the mold, and cutting and polishing to obtain the artificial decorative stone; the invention has the advantages of effectively saving resources, improving the compressive strength of the artificial decorative stone and reducing the porosity of the artificial decorative stone.
Description
Technical Field
The invention belongs to the field of manganese-silicon alloy hot slag treatment, and particularly relates to a method for preparing artificial decorative stone by utilizing manganese-silicon alloy hot slag.
Background
Smelting manganese-silicon alloy can produce a large amount of manganese-silicon alloy hot melting waste residues. The manganese-silicon alloy waste slag contains much SiO2 and CaO and almost no iron. The existing manganese-silicon alloy waste residue utilization technology in China is mainly characterized in that waste residues are treated by water quenching and then are used as main raw materials of cement; the manganese-silicon alloy waste slag can also be used for producing baking-free bricks and other building materials. However, the slag water quenching treatment technology has the defects of large water consumption, air pollution, water pollution, incapability of recycling heat energy and the like. The slag is not operated properly during water quenching, and is easy to explode, thereby forming accident potential of safe production.
Chinese patent with publication number CN101559953B and publication number 2009.10.21 discloses a method for manufacturing cast stone by using high-temperature liquid silicomanganese waste slag as raw material, which mainly takes quartz sand and chromite powder as additives, the quartz sand and the chromite powder are uniformly mixed according to the proportion and then heated to 1300-1400 ℃, then silicomanganese slag after being smelted out of a submerged arc furnace and the additives are added into a slag water bag together for mixing, and then the stone is prepared by casting, crystallization, annealing and other processes; the stone prepared by the method has high porosity and seriously influences the compressive strength of the stone.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for preparing artificial decorative stone by utilizing manganese-silicon alloy hot-melt slag, which solves the problems in the background art.
A method for preparing artificial decorative stone by utilizing manganese-silicon alloy hot-melt slag comprises the following steps:
s1, synchronously adding the manganese-silicon alloy hot slag and a clarifying agent into a quenching and tempering electrolytic furnace according to the required mass percentage to obtain mixed slag, keeping the temperature in the quenching and tempering electrolytic furnace between 1100 ℃ and 1600 ℃, and uniformly mixing and heating for 1-4 h;
s2, pouring the mixed slag into a prepared mould through a slag outlet of a quenching and tempering electrolytic furnace after uniform mixing and heating, then quickly transferring the mould into a crystallization furnace, controlling the temperature of the crystallization furnace to be between 800 and 1300 ℃, and preserving heat for 1 to 3 hours to obtain crystals;
s3, after the heat preservation is finished, stopping heating of the crystallization furnace, and after the temperature of the crystallization furnace is naturally cooled to the room temperature, withdrawing the mold from the crystallization furnace;
and S4, taking the cooled crystals out of the mold, cutting the crystals into stones with required sizes according to requirements, and polishing the stones to obtain the artificial decorative stones.
Further, the addition amount of the manganese-silicon alloy hot slag is 99.5-99.9% by mass, the addition amount of the clarifying agent is 0.1-0.5% by mass, and the sum of the addition amounts of the manganese-silicon alloy hot slag and the clarifying agent is 100% by mass.
Further, in the step S1, the manganese-silicon alloy hot slag and the clarifying agent are synchronously added on a feeding plate of the quenching and tempering electrolytic furnace.
Further, the manganese-silicon alloy hot slag is poured onto a feeding plate at a constant speed by a travelling crane hoisting heat-preservation tank, the clarifying agent is contained in an iron funnel, the clarifying agent is dripped onto the feeding plate at a constant speed by the iron funnel, and when the manganese-silicon alloy hot slag is poured, the clarifying agent is just added.
Further, in the step S3, the crystallization furnace is provided with a heat source by high-temperature tail gas generated by the mn-si alloy submerged arc furnace.
Further, in the process of preparing the artificial stone, the waste materials which are not formed or damaged in the crystallization furnace or the waste stone generated in the cutting process are crushed as concrete sandstone aggregate according to the requirement.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the stone is prepared by utilizing the manganese-silicon alloy hot slag, so that the manganese-silicon alloy hot slag is recycled, the application range of the existing manganese-silicon alloy hot slag is expanded, and the utilization rate of the manganese-silicon alloy hot slag is improved;
2. according to the invention, the clarifying agent is added to reduce the porosity of the manganese-silicon alloy hot slag during solidification, so that the overall compactness of the stone is ensured, and the compressive strength of the stone is further effectively improved;
3. the heat source required by the crystallization furnace kiln is provided by high-temperature tail gas generated by the manganese-silicon alloy submerged arc furnace, so that the resource is fully recycled, the energy recycling in the manganese-silicon alloy production process is improved, and the energy-saving and environment-friendly effects are good;
4. the method provided by the invention has the advantages that the damaged materials, the waste materials and the leftover materials generated in the stone preparation process are crushed and then are secondarily utilized as concrete sandstone aggregates, so that the waste materials are reasonably reused, the manganese-silicon alloy hot slag is fully recycled, and the environmental pollution caused by direct discharge is avoided;
in a word, the invention has the advantages of effectively saving resources, improving the compressive strength of the artificial decorative stone and reducing the porosity of the artificial decorative stone.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
A method for preparing artificial decorative stone by utilizing manganese-silicon alloy hot-melt slag comprises the following steps:
s1, synchronously adding the manganese-silicon alloy hot slag and a clarifying agent into a quenching and tempering electrolytic furnace according to the required mass percentage to obtain mixed slag, keeping the temperature in the quenching and tempering electrolytic furnace between 1100 ℃ and 1200 ℃, and uniformly mixing and heating for 2 hours;
s2, pouring the mixed slag into a prepared mould through a slag outlet of a quenching and tempering electrolytic furnace after the uniform mixing and heating are finished, then quickly transferring the mould into a crystallization furnace, controlling the temperature of the crystallization furnace to be 800-1000 ℃, and preserving the heat for 2 hours to obtain crystals;
s3, after the heat preservation is finished, stopping heating of the crystallization furnace, and after the temperature of the crystallization furnace is naturally cooled to the room temperature, withdrawing the mold from the crystallization furnace;
and S4, taking the cooled crystals out of the mold, cutting the crystals into stones with required sizes according to requirements, and polishing the stones to obtain the artificial decorative stones.
In this embodiment, the addition amount of the manganese-silicon alloy hot slag is 99.9% by mass, the addition amount of the clarifier is 0.1% by mass, and the sum of the addition amounts of the manganese-silicon alloy hot slag and the clarifier is 100% by mass.
In this embodiment, in the step S1, the hot mn-si alloy slag and the fining agent are added to the feed plate of the quenching and tempering electrolytic furnace simultaneously.
In this embodiment, the manganese-silicon alloy hot slag is poured onto the feed plate at a constant speed by a travelling crane hoisting insulation tank, the clarifying agent is contained in an iron funnel, the clarifying agent is dripped onto the feed plate at a constant speed by the iron funnel, and when the manganese-silicon alloy hot slag is poured, the clarifying agent is just added.
In this embodiment, in the step S3, the crystallization furnace is provided with a heat source from the high-temperature tail gas generated by the mn-si alloy submerged arc furnace.
In this embodiment, in the process of preparing the artificial stone, the waste materials that are not formed or damaged in the crystallization kiln or the waste stones generated in the cutting process are crushed as concrete gravel aggregates as required.
The properties of the artificial decorative stone prepared in this example, which were measured according to the requirements of artificial stone national Standard JC/T908-2013, are shown in the following table.
Example 2
The present example is another embodiment of example 1, and the present example is different from example 1 in the process parameters of the process for preparing the artificial decorative stone, the mass percentages of the manganese-silicon alloy hot slag and the clarifier added, and only the parts different from example 1 will be described below.
A method for preparing artificial decorative stone by utilizing manganese-silicon alloy hot-melt slag comprises the following steps:
s1, synchronously adding the manganese-silicon alloy hot slag and a clarifying agent into a quenching and tempering electrolytic furnace according to the required mass percentage to obtain mixed slag, keeping the temperature in the quenching and tempering electrolytic furnace between 1200 ℃ and 1300 ℃, and uniformly mixing and heating for 2 h;
s2, pouring the mixed slag into a prepared mould through a slag outlet of a quenching and tempering electrolytic furnace after uniform mixing and heating, then quickly transferring the mould into a crystallization furnace, controlling the temperature of the crystallization furnace to be 900-1100 ℃, and preserving heat for 2 hours to obtain crystals;
s3, after the heat preservation is finished, stopping heating of the crystallization furnace, and after the temperature of the crystallization furnace is naturally cooled to the room temperature, withdrawing the mold from the crystallization furnace;
and S4, taking the cooled crystals out of the mold, cutting the crystals into stones with required sizes according to requirements, and polishing the stones to obtain the artificial decorative stones.
In this embodiment, the addition amount of the manganese-silicon alloy hot slag is 99.7% by mass, the addition amount of the clarifier is 0.3% by mass, and the sum of the addition amounts of the manganese-silicon alloy hot slag and the clarifier is 100% by mass.
The properties of the artificial decorative stone prepared in this example, which were measured according to the requirements of artificial stone national Standard JC/T908-2013, are shown in the following table.
Example 3
The present example is another embodiment of example 1, and the present example is different from example 1 in the process parameters of the process for preparing the artificial decorative stone, the mass percentages of the manganese-silicon alloy hot slag and the clarifier added, and only the parts different from example 1 will be described below.
A method for preparing artificial decorative stone by utilizing manganese-silicon alloy hot-melt slag comprises the following steps:
s1, synchronously adding the manganese-silicon alloy hot slag and a clarifying agent into a quenching and tempering electrolytic furnace according to the required mass percentage to obtain mixed slag, keeping the temperature in the quenching and tempering electrolytic furnace between 1300 ℃ and 1400 ℃, and uniformly mixing and heating for 2 hours;
s2, pouring the mixed slag into a prepared mould through a slag outlet of a quenching and tempering electrolytic furnace after uniform mixing and heating, then quickly transferring the mould into a crystallization furnace, controlling the temperature of the crystallization furnace to be 1200-1300 ℃, and preserving heat for 2 hours to obtain crystals;
s3, after the heat preservation is finished, stopping heating of the crystallization furnace, and after the temperature of the crystallization furnace is naturally cooled to the room temperature, withdrawing the mold from the crystallization furnace;
and S4, taking the cooled crystals out of the mold, cutting the crystals into stones with required sizes according to requirements, and polishing the stones to obtain the artificial decorative stones.
In this embodiment, the addition amount of the manganese-silicon alloy hot slag is 99.5% by mass, the addition amount of the clarifier is 0.5% by mass, and the sum of the addition amounts of the manganese-silicon alloy hot slag and the clarifier is 100% by mass.
The properties of the artificial decorative stone prepared in this example, which were measured according to the requirements of artificial stone national Standard JC/T908-2013, are shown in the following table.
Experimental comparative example:
experimental example 1
Experimental example 1 is another embodiment based on the experimental example 1, the difference between the experimental example and the experimental example 1 is that no clarifying agent is added, the rest preparation processes are the same, and the product performance of the artificial decorative stone prepared in the experimental example detected according to the requirements of artificial stone national standard JC/T908-2013 is shown in the following table.
Experimental example 2
Experimental example 2 is another embodiment based on the example 1, the difference between the experimental example and the example 1 is that the temperature in the electrolytic furnace is adjusted to 1000 ℃ to 1100 ℃ in the step S1, the temperature is kept for 1h, the other preparation processes are the same, and the product performance of the artificial decorative stone prepared in the experimental example detected according to the requirements of artificial stone national standard JC/T908-2013 is shown in the following table.
Experimental example 3
Experimental example 3 is another embodiment based on example 1, the difference between the experimental example and example 1 is that the temperature of the crystal furnace kiln in the step S2 is 700 ℃ -790 ℃, the temperature is kept for 1.5h, the rest preparation processes are the same, and the product performance of the artificial decorative stone prepared in the experimental example detected according to the requirements of artificial stone national standard JC/T908-2013 is shown in the following table.
In conclusion, the invention effectively reduces the porosity of the prepared artificial decorative stone and improves the compressive strength of the artificial decorative stone by introducing the clarifying agent, controlling and modulating the temperature in the electrolytic furnace and controlling the temperature of the crystallization furnace in the crystallization process.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A method for preparing artificial decorative stone by utilizing manganese-silicon alloy hot-melt slag is characterized by comprising the following steps:
s1, synchronously adding the manganese-silicon alloy hot slag and a clarifying agent into a quenching and tempering electrolytic furnace according to the required mass percentage to obtain mixed slag, keeping the temperature in the quenching and tempering electrolytic furnace between 1100 ℃ and 1600 ℃, and uniformly mixing and heating for 1-4 h;
s2, pouring the mixed slag into a prepared mould through a slag outlet of a quenching and tempering electrolytic furnace after uniform mixing and heating, then quickly transferring the mould into a crystallization furnace, controlling the temperature of the crystallization furnace to be between 800 and 1300 ℃, and preserving heat for 1 to 3 hours to obtain crystals;
s3, after the heat preservation is finished, stopping heating of the crystallization furnace, and after the temperature of the crystallization furnace is naturally cooled to the room temperature, withdrawing the mold from the crystallization furnace;
and S4, taking the cooled crystals out of the mold, cutting the crystals into stones with required sizes according to requirements, and polishing the stones to obtain the artificial decorative stones.
2. The method for preparing artificial decorative stone using manganese-silicon alloy hot-melt slag according to claim 1, wherein the method comprises the following steps: the mass percent of the addition amount of the manganese-silicon alloy hot slag is 99.5-99.9%, the mass percent of the addition amount of the clarifying agent is 0.1-0.5%, and the sum of the mass percent of the addition amount of the manganese-silicon alloy hot slag and the mass percent of the addition amount of the clarifying agent is 100%.
3. The method for preparing artificial decorative stone using manganese-silicon alloy hot-melt slag according to claim 1, wherein the method comprises the following steps: in the step S1, the manganese-silicon alloy hot slag and the clarifier are synchronously added on a feed plate of the quenching and tempering electrolytic furnace.
4. The method for preparing artificial decorative stone using manganese-silicon alloy hot-melt slag according to claim 3, wherein the method comprises the following steps: the manganese-silicon alloy hot slag is poured onto the feeding plate at a constant speed by a travelling crane hoisting heat-preservation tank, the clarifying agent is contained in an iron funnel, the clarifying agent is dripped onto the feeding plate at a constant speed by the iron funnel, and when the manganese-silicon alloy hot slag is poured, the clarifying agent is just added.
5. The method for preparing artificial decorative stone using manganese-silicon alloy hot-melt slag according to claim 1, wherein the method comprises the following steps: in the step S3, the crystallization furnace is used as a heat source by the high-temperature tail gas generated by the mn-si alloy submerged arc furnace.
6. The method for preparing artificial decorative stone using manganese-silicon alloy hot-melt slag according to claim 1, wherein the method comprises the following steps: in the process of preparing the artificial stone, the unformed or damaged waste materials in a crystallization furnace or the waste stone generated in the cutting process are crushed as concrete sandstone aggregate according to the requirement.
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Cited By (3)
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| CN114213022A (en) * | 2021-12-30 | 2022-03-22 | 武汉理工大学 | Black microcrystalline glass plate taking molten manganese alloy slag as main raw material and preparation method thereof |
| CN114409261A (en) * | 2021-12-30 | 2022-04-29 | 武汉理工大学 | Texture microcrystalline glass plate taking manganese alloy smelting high-temperature molten slag as main raw material and preparation method thereof |
| CN114956777A (en) * | 2022-06-09 | 2022-08-30 | 山东新智能源科技有限公司 | Mineral melting direct casting crystallization micropore stone forming process |
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| CN114213022A (en) * | 2021-12-30 | 2022-03-22 | 武汉理工大学 | Black microcrystalline glass plate taking molten manganese alloy slag as main raw material and preparation method thereof |
| CN114409261A (en) * | 2021-12-30 | 2022-04-29 | 武汉理工大学 | Texture microcrystalline glass plate taking manganese alloy smelting high-temperature molten slag as main raw material and preparation method thereof |
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| CN114956777A (en) * | 2022-06-09 | 2022-08-30 | 山东新智能源科技有限公司 | Mineral melting direct casting crystallization micropore stone forming process |
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