CN110451792B - Method for producing mineral wool by using silicomanganese and nickel-iron alloy smelting waste residues - Google Patents
Method for producing mineral wool by using silicomanganese and nickel-iron alloy smelting waste residues Download PDFInfo
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- CN110451792B CN110451792B CN201910797470.8A CN201910797470A CN110451792B CN 110451792 B CN110451792 B CN 110451792B CN 201910797470 A CN201910797470 A CN 201910797470A CN 110451792 B CN110451792 B CN 110451792B
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
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Abstract
The invention relates to a method for producing mineral wool by using silicomanganese and nickel-iron alloy smelting waste residues; belongs to the field of resource utilization of metallurgical waste residues. The method takes silicomanganese smelting waste residues and ferronickel smelting waste residues as raw materials, takes the mixing ratio of silicomanganese and ferronickel residues as a main control process, adds the mixed smelting waste residues into an electric furnace for melting, and then utilizes a centrifugal cotton-forming process to prepare the waste residues into mineral wool. The control process is specifically determined by the viscosity and melting performance of silicomanganese slag and ferronickel slag, and the mixed waste slag melt is in a viscosity range of 1-3 Pa.s, and the temperature span range is 40-80 ℃; the melting temperature of the mixed waste residue is not higher than 1450 ℃. The two smelting waste residues are mixed according to a certain proportion, so that the melting property and the viscosity property of the waste residues can be comprehensively modified, the two smelting waste residues become suitable production raw materials of mineral wool, the metallurgical slag resources are comprehensively utilized, and economic and environmental benefits are created.
Description
Technical Field
The invention relates to a method for producing mineral wool by using silicomanganese and nickel-iron alloy smelting waste residues; belongs to the field of resource utilization of metallurgical waste residues.
Background
Because of the huge world steel output, the silicon-manganese alloy and the nickel-iron alloy are used as steel deoxidation and alloy components, the annual output is also huge, and simultaneously, the large amount of discharge of silicon-manganese and nickel-iron smelting waste residues is brought. At present, the treatment modes of silicomanganese and ferronickel smelting waste residues are mainly stockpiling and resource utilization. The stockpiling causes waste of land and potential environmental hazard, and the resource utilization is mainly in the aspects of cement, paving base stones and the like. The mineral wool is used as a heat preservation, heat insulation and sound insulation material and is widely applied to various fields of national economy. The latest research shows that the metallurgical waste slag can be made into mineral wool through technological means such as tempering and the like, and various mineral wool products can be finally made. Meanwhile, the metallurgical waste residues are prepared into the mineral wool, so that the problems of stockpiling and pollution of the metallurgical waste residues are solved, compared with resource utilization approaches such as cement and the like, the mineral wool product has higher economic value, and the method is a new approach for high-added-value utilization of the metallurgical waste residues.
The production process of the slag wool comprises a centrifugal method and a blowing method, and the requirements on the production raw materials and the melting process are the same in the early stage no matter which process is adopted. The waste slag used as the raw material for producing the mineral wool specifically has the following requirements: 1. the melting temperature of the raw materials is lower than 1450 ℃; 2. in the slag wool formation temperature range, the melt should have a low viscosity and a temperature-viscosity gradient; 3. the slag wool fiber is long and thin and has good chemical stability.
The melting temperature of the silicomanganese slag is generally below 1500 ℃, the melt mostly presents the characteristic of long slag, the melt melting interval is wide, the silicon manganese slag is easy to be drawn into fiber, and the silicon manganese slag presents strong glass property. The melting temperature of the ferronickel waste slag is 1500-1600 ℃, the ferronickel waste slag shows short slag property, the melting interval of the melt is small, a large amount of crystals are easily separated out in the cooling process, and inorganic fibers and glass phases are not easily formed. In theory, the silicomanganese slag is a proper raw material for producing the mineral wool, but the silicomanganese slag shows extremely strong glass property in actual production, and the mineral wool with excellent quality cannot be produced. The nickel-iron slag is not suitable to be used as raw material for producing mineral wool because of the over-high melting temperature and the strong crystallization property of the melt.
Based on the respective melt characteristics of the silicomanganese slag and the ferronickel slag, the invention discloses a method for producing mineral wool by using a mixture of the silicomanganese slag and the ferronickel slag as a raw material. The method fully utilizes the physical properties of the silicomanganese slag and the ferronickel slag, and finally achieves the aim of scientifically producing the mineral wool through the mutual modification and tempering of the waste slag. Has great significance for the high value-added resource utilization of the silicomanganese and ferronickel smelting waste residue.
Disclosure of Invention
In order to realize the high value-added resource application of silicomanganese slag and ferronickel smelting waste slag, a method for producing mineral wool by utilizing silicomanganese and ferronickel smelting waste slag is provided.
The invention relates to a method for producing mineral wool by utilizing silicomanganese and nickel-iron alloy smelting waste residues, which comprises the following steps of: smelting waste slag of silicon-manganese alloy: the method comprises the following steps of (1) preparing ferronickel smelting waste residue 4: 6-9: 1, mixing silicomanganese smelting waste residue and ferronickel smelting waste residue, crushing, uniformly mixing to obtain mixed waste residue, heating the mixed waste residue to 1600 ℃, preserving heat to obtain a melt, and preparing the waste residue into mineral wool by a centrifugal cotton-forming process on the melt, wherein the melting temperature of the mixed waste residue is not higher than 1450 ℃; after the mixed waste slag is melted, when the viscosity of the melt is in a viscosity range of 1-3 Pa.s, the temperature span range is 40-80 ℃;
or
According to the mass ratio: smelting waste slag of silicon-manganese alloy: the method comprises the following steps of (1) preparing ferronickel smelting waste slag which is 4: 6-9: 1, preparing one of a silicomanganese smelting waste slag melt and a ferronickel smelting waste slag melt, then adding the other waste slag into molten slag, and melting to obtain a melt, wherein the temperature of the melt is not higher than 1600 ℃, and preferably 1500-1550 ℃; when the viscosity of the melt is within a viscosity range of 1-3 Pa.s, the temperature span range is 40-80 ℃;
or
According to the mass ratio: smelting waste slag of silicon-manganese alloy: mixing a silicomanganese alloy smelting waste slag melt and a ferronickel alloy smelting waste slag melt to obtain a mixed melt, wherein the temperature of the mixed melt is not higher than 1600 ℃, and preferably 1500-; when the viscosity of the melt is within a viscosity range of 1-3 Pa.s, the temperature span range is 40-80 ℃.
The invention relates to a method for producing slag wool by using silicomanganese and nickel-iron alloy smelting waste residues, and the obtained slag wool conforms to GB/T11835-2016.
The invention relates to a method for producing mineral wool by utilizing silicomanganese and nickel-iron alloy smelting waste residues, which comprises the following steps of: smelting waste slag of silicon-manganese alloy: and (3) preparing the ferronickel smelting waste residue at a ratio of 4: 6-9: 1, and preparing the silicomanganese smelting waste residue and the ferronickel smelting waste residue, or preparing at least one of silicomanganese smelting waste residue melt and ferronickel smelting waste residue melt.
As a preferred scheme, the method for producing the mineral wool by using the silicomanganese and nickel-iron alloy smelting waste residues has the melting temperature of 1350-1450 ℃ for the mixed waste residues.
As the scheme 1 of the preferred scheme, the invention relates to a method for producing mineral wool by using silicomanganese and nickel-iron alloy smelting waste residues, which comprises the following steps of: smelting waste slag of silicon-manganese alloy: preparing the ferro-nickel alloy smelting waste residue 7:3 from silicomanganese alloy smelting waste residue and ferro-nickel alloy smelting waste residue; uniformly mixing mixed slag, wherein the temperature of the mixed slag is 58 ℃ within 1-3 Pa.s, and the complete melting temperature is 1401 ℃; heating the mixed slag in an electric furnace to melt the mixed slag to 1500 ℃; preserving the heat for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, and slag cotton products are collected through a slag cotton collector; the produced slag wool product is detected and analyzed according to the national standard GB/T11835-2016 requirements on heat-insulating rock wool, slag wool and products thereof, the average diameter of the fiber is 4.8 microns, the slag ball content is 6.1 percent, and the thermal load shrinkage temperature is 716 ℃.
As the scheme 2 of the preferred scheme, the invention relates to a method for producing mineral wool by using silicomanganese and nickel-iron alloy smelting waste residues, which comprises the following steps of: smelting waste slag of silicon-manganese alloy: 2, preparing silicomanganese alloy smelting waste and ferronickel alloy smelting waste; uniformly mixing mixed slag, wherein the temperature of the mixed slag is 67 ℃ within 1-3 Pa.s, and the complete melting temperature is 1389 ℃; heating the mixed slag in an electric furnace to melt the mixed slag to 1500 ℃; preserving the heat for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, and slag cotton products are collected through a slag cotton collector; the produced slag wool product is detected and analyzed according to the requirements of the national standard GB/T11835-.
As the scheme 3 of the preferred scheme, the invention relates to a method for producing mineral wool by using silicomanganese and nickel-iron alloy smelting waste residues, which comprises the following steps of: smelting waste slag of silicon-manganese alloy: preparing silicomanganese alloy smelting waste and ferronickel alloy smelting waste 6: 4; uniformly mixing mixed slag, wherein the temperature of the mixed slag is 45 ℃ within 1-3 Pa.s, and the complete melting temperature is 1456 ℃; heating the mixed slag in an electric furnace to melt the mixed slag to 1500 ℃; preserving the heat for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, and slag cotton products are collected through a slag cotton collector; the produced slag wool product is detected and analyzed according to the requirements of the national standard GB/T11835-.
In the scheme 1, the scheme 2 and the scheme 3, the performance of the product obtained by the scheme 1 and the scheme 2 is better than that of the scheme 3.
The method takes silicomanganese smelting waste residues and ferronickel smelting waste residues as raw materials, takes the mixing ratio of silicomanganese and ferronickel residues as a main control process, adds the mixed smelting waste residues into an electric furnace for melting, and then utilizes a centrifugal cotton-forming process to prepare the waste residues into mineral wool; the control process is specifically determined by the viscosity and melting performance of silicomanganese slag and nickel-iron slag, and the mixed waste slag melt is in a viscosity range of 1-3 Pa.s, and the temperature span range is 40-80 ℃; the melting temperature of the mixed waste residue is not higher than 1450 ℃.
In the invention, a high-temperature physical property melt viscosity tester is used for measuring the temperature-viscosity curve of the mixture of the silicomanganese slag and the ferronickel slag.
In the invention, hot wire equipment is used for measuring the melting temperature of the mixture of the silicomanganese slag and the ferronickel slag.
The invention relates to a method for producing mineral cotton fiber by utilizing silicomanganese and nickel-iron alloy smelting waste residues; in industrial application, the operation steps are as follows: (1) the silicon-manganese slag and the nickel-iron slag are confirmed in proportion, namely the silicon-manganese slag and the nickel-iron slag are reasonably proportioned and mixed, a temperature-viscosity curve of a mixture of the silicon-manganese slag and the nickel-iron slag is determined by using a high-temperature physical property melt viscosity tester, and the most appropriate proportion is preferably selected, wherein the silicon-manganese alloy smelting waste slag comprises the following steps: the ferronickel smelting waste residue is 4: 6-9: 1; (2) melting the mixed waste residues, namely putting the silicomanganese residues and the ferronickel residues which are uniformly mixed in proportion into an electric furnace for melting; (3) and (4) producing slag wool, adjusting working parameters, and performing centrifugal cotton forming operation.
Principles and advantages
The invention principle is as follows:
the raw materials for producing the slag wool need to meet certain conditions in terms of viscosity and melting properties: the melting temperature of the raw material slag is not higher than 1450 ℃, the melt has a wider temperature range within a viscosity range of 1-3 Pa.s, and the like. In the metallurgical slag, the silicomanganese slag belongs to 'long slag' (see attached figure 3), the ferronickel slag belongs to 'short slag' (see attached figure 4), and based on the respective slag characteristics, the slag wool which meets the national standard GB/T11835-2016 can be prepared by selecting a proper proportion under the condition of not adding other materials through mixed tempering of the two types of waste slag.
Advantages of the invention
1. Changing waste into valuable, firstly providing the use of silicomanganese smelting waste slag and ferronickel smelting waste slag for mutual tempering, realizing the condition of not adding other materials by optimizing the proportion of the waste slag and the ferronickel smelting waste slag, and preparing the slag wool which meets the national standard at a lower temperature.
2. Through the mutual tempering effect between the silicomanganese slag and the ferronickel slag, the ferronickel slag which is not suitable for producing slag wool can be used as a production raw material of mineral wool, and the comprehensive utilization range of the two types of waste slag is widened.
3. The proportion of the silicomanganese slag and the nickel-iron slag is scientifically and accurately determined by a high-temperature physical property melt viscosity tester and hot wire equipment, and the method has great guiding significance for improving the accuracy of the method and the practicability of industrial production.
Drawings
FIG. 1 shows the measured temperature-viscosity curve of silicomanganese smelting slag to show the characteristic of long slag;
FIG. 2 shows the measured temperature-viscosity curve of ferronickel smelting slag to show the characteristic of short slag;
FIG. 3 is a temperature-viscosity curve of the mixture of silicomanganese slag and ferronickel slag, suitable for producing mineral wool;
FIG. 4 shows the measured melting temperature of the mixture of silicomanganese slag and ferronickel slag, which is suitable for producing mineral wool;
FIG. 5 is a schematic illustration of a process for producing mineral wool by a centrifugation process in an embodiment of the present invention;
FIG. 6 is a photograph of a slag wool sample in example 1;
FIG. 7 is a photograph of a slag wool in comparison example 1;
FIG. 8 is a photograph of a slag wool in comparison example 2;
fig. 9 is a photograph of a slag wool in comparison example 3.
Detailed Description
In the embodiment, the silicomanganese slag and the ferronickel slag are used as raw materials, the slag wool is produced in a 1t electric arc furnace by a four-roller centrifugal process, and the specific components of the raw materials are shown in tables 1 and 2.
TABLE 1 main composition of silicomanganese slag
| SiO2 | Al2O3 | CaO | MnO | MgO | FeO |
| 38.78 | 19.2 | 18.34 | 8.85 | 6.45 | 1.43 |
TABLE 2 main Components of the ferronickel slag
| Fe2O3 | SiO2 | CaO | MgO | Al2O3 | Cr2O3 |
| 5.89 | 48.34 | 5.57 | 28.89 | 4.67 | 1.36 |
Example 1
The implementation aims at the condition that when the mass ratio of the silicomanganese slag to the nickel-iron slag is 7:3, the mixture of the two types of slag is used as a raw material to produce the mineral wool by a centrifugal process, and the process flow is as shown in figure 5. And (3) judging the properties of the raw materials entering the furnace: firstly, testing the viscosity and the melting temperature of a slag mixture with the mass ratio of silicomanganese slag to ferronickel slag being 7:3, wherein the experimental result is shown in attached figures 3 and 4; the result shows that the slag mixture with the mass ratio of the silicomanganese slag to the ferronickel slag being 7:3 has the temperature range of 58 ℃ in 1-3 Pa.s and the complete melting temperature of 1401 ℃, and the property of the mixed slag completely meets the requirement of producing mineral wool. Production of mineral wool: adding a slag mixture with the mass ratio of silicomanganese slag to ferronickel slag being 7:3 into an electric furnace; heating the mixed slag in an electric furnace to melt the mixed slag to 1500 ℃; preserving the heat for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, slag cotton products pass through, and a slag cotton collector collects the slag cotton products. The produced slag wool product is detected and analyzed according to the national standard GB/T11835-2016 requirements of heat-insulating rock wool, slag wool and products thereof, and the analysis result is shown in the following table and completely meets the national standard. The physical picture is shown in figure 6.
| Item | National Standard GB/T11835- | Measured value |
| Diameter of fiber | ≤6.0μm | 4.8μm |
| Shot content | ≤7.0％ | 6.1％ |
| Heat load shrinkage temperature | ≥650℃ | 716℃ |
Example 2
The implementation aims at the condition that when the mass ratio of the silicomanganese slag to the nickel-iron slag is 8:2, the mixture of the two types of slag is used as a raw material to produce the mineral wool by a centrifugal process, and the process flow is as shown in figure 5. And (3) judging the properties of the raw materials entering the furnace: firstly, testing the viscosity and the melting temperature of a slag mixture with the mass ratio of silicon-manganese slag to nickel-iron slag being 8: 2; the result shows that the slag mixture with the mass ratio of the silicomanganese slag to the nickel-iron slag being 8:2 has the temperature range of 67 ℃ in 1-3 Pa.s and the complete melting temperature of 1389 ℃, and the property of the mixed slag completely meets the requirement of producing mineral wool. Production of mineral wool: adding a slag mixture with the mass ratio of the silicomanganese slag to the ferronickel slag being 8:2 into an electric furnace; heating the mixed slag in an electric furnace to melt the mixed slag to 1500 ℃; preserving the heat for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, slag cotton products pass through, and a slag cotton collector collects the slag cotton products. The produced slag wool product is detected and analyzed according to the national standard GB/T11835-2016 requirements of heat-insulating rock wool, slag wool and products thereof, and the analysis result is shown in the following table and completely meets the national standard.
| Item | National standard GB/T11835-2016 | Measured value |
| Diameter of fiber | ≤6.0μm | 5.5μm |
| Shot content | ≤7.0％ | 6.4％ |
| Heat load shrinkage temperature | ≥650℃ | 734℃ |
Example 3
The implementation aims at the condition that when the mass ratio of the silicomanganese slag to the nickel-iron slag is 6:4, the mixture of the two types of slag is used as a raw material to produce the mineral wool by a centrifugal process, and the process flow is as shown in figure 5. And (3) judging the properties of the raw materials entering the furnace: firstly, testing the viscosity and melting temperature of a slag mixture with the mass ratio of silicomanganese slag to ferronickel slag being 7: 3; the result shows that the slag mixture with the mass ratio of the silicomanganese slag to the nickel-iron slag being 6:4 has the temperature interval of 45 ℃ in 1-3 Pa.s and the complete melting temperature of 1436 ℃, and the properties of the mixed slag completely meet the requirements of producing mineral wool. Production of mineral wool: adding a slag mixture with the mass ratio of silicomanganese slag to ferronickel slag being 6:4 into an electric furnace; heating the mixed slag in an electric furnace to melt the mixed slag to 1500 ℃; preserving the heat for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, slag cotton products pass through, and a slag cotton collector collects the slag cotton products. The produced slag wool product is detected and analyzed according to the national standard GB/T11835-2016 requirements of heat-insulating rock wool, slag wool and products thereof, and the analysis result is shown in the following table and completely meets the national standard.
| Item | National Standard GB/T11835- | Measured value |
| Diameter of fiber | ≤6.0μm | 5.7μm |
| Shot content | ≤7.0％ | 6.8％ |
| Heat load shrinkage temperature | ≥650℃ | 708℃ |
Comparative example 1
The implementation is directed to the situation of producing mineral wool by a centrifugal process by taking nickel-iron slag as a raw material, and the process flow is as shown in figure 5. Heating and melting the ferronickel smelting waste slag to 1650 ℃ in an electric furnace; preserving the heat for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, slag cotton products pass through, and a slag cotton collector collects the slag cotton products. The produced slag wool product is detected and analyzed according to the national standard GB/T11835-2016 of heat-insulating rock wool, slag wool and products thereof, the analysis result is shown in the following table, and the quality of the slag wool is unqualified. The physical picture is shown in figure 7.
When the ferronickel smelting waste slag is heated and melted to 1500 ℃ in an electric furnace, the slag wool is basically prepared by a method.
Comparative example 2
The implementation needle is used for the situation that the silicomanganese slag is used as a raw material to produce the mineral wool by a centrifugal process, and the process flow is as shown in figure 5. Heating and melting the silicomanganese smelting waste slag to 1500 ℃ in an electric furnace; preserving the heat for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, slag cotton products pass through, and a slag cotton collector collects the slag cotton products. The produced slag wool product is detected and analyzed according to the national standard GB/T11835-2016 of heat-insulating rock wool, slag wool and products thereof, the analysis result is shown in the following table, and the quality of the slag wool is unqualified. The physical picture is shown in figure 8.
| Item | National Standard GB/T11835- | Measured value |
| Diameter of fiber | ≤6.0μm | 6.7μm |
| Shot content | ≤7.0％ | 9.8％ |
| Heat load shrinkage temperature | ≥650℃ | 692℃ |
Comparative example 3
The implementation aims at the condition that when the mass ratio of the silicomanganese slag to the nickel-iron slag is 2:8, the mixture of the two types of slag is used as a raw material to produce mineral wool by a centrifugal process, and the process flow is as shown in figure 5. And (3) judging the properties of the raw materials entering the furnace: firstly, testing the viscosity and the melting temperature of a slag mixture with the mass ratio of silicomanganese slag to ferronickel slag being 2: 8; the result shows that the slag mixture with the mass ratio of the silicomanganese slag to the nickel-iron slag of 2:8 has the temperature range of 13 ℃ in 1-3 Pa.s and the complete melting temperature of 1471 ℃, and the property of the mixed slag completely meets the requirement of producing mineral wool. Production of mineral wool: adding a slag mixture with the mass ratio of the silicomanganese slag to the ferronickel slag being 2:8 into an electric furnace; heating the mixed slag in an electric furnace to melt the mixed slag to 1600 ℃; preserving the heat for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, slag cotton products pass through, and a slag cotton collector collects the slag cotton products. The produced slag wool product is detected and analyzed according to the national standard GB/T11835-2016 requirements of heat-insulating rock wool, slag wool and products thereof, and the analysis result is shown in the following table and completely meets the national standard. The physical picture is shown in figure 9.
| Item | National Standard GB/T11835- | Measured value |
| FiberDiameter of | ≤6.0μm | 7.1μm |
| Shot content | ≤7.0％ | 21.3％ |
| Heat load shrinkage temperature | ≥650℃ | 716℃ |
When the mixed slag material is heated and melted to 1500 ℃ in an electric furnace, the slag wool can not be obtained basically.
Claims (6)
1. A method for producing mineral wool by utilizing silicomanganese and nickel-iron alloy smelting waste residues is characterized by comprising the following steps: according to the mass ratio, the silicon-manganese alloy smelting waste residue: the method comprises the following steps of (1) preparing ferronickel smelting waste residues =4: 6-9: 1, crushing and uniformly mixing silicomanganese smelting waste residues and ferronickel smelting waste residues to obtain mixed waste residues, heating the mixed waste residues to 1500 ℃, preserving heat to obtain a melt, and centrifuging the melt to form cotton into slag wool, wherein the melting temperature of the mixed waste residues is 1350-1450 ℃; after the mixed waste slag is melted, when the viscosity of the melt is in a viscosity range of 1-3 Pa.s, the temperature span range is 40-80 ℃;
or
According to the mass ratio: smelting waste slag of silicon-manganese alloy: the method comprises the following steps of (1) preparing ferronickel smelting waste slag =4: 6-9: 1, preparing one of a silicomanganese smelting waste slag melt and a ferronickel smelting waste slag melt, then adding the other waste slag into molten slag, and melting to obtain a melt, wherein the temperature of the melt is not higher than 1600 ℃; when the viscosity of the melt is within a viscosity range of 1-3 Pa.s, the temperature span range is 40-80 ℃;
or
According to the mass ratio: smelting waste slag of silicon-manganese alloy: the method comprises the following steps of (1) preparing ferronickel smelting waste slag =4: 6-9: 1, mixing a silicomanganese smelting waste slag melt and a ferronickel smelting waste slag melt, and uniformly mixing to obtain a mixed melt, wherein the temperature of the mixed melt is not higher than 1600 ℃; when the viscosity of the melt is within a viscosity range of 1-3 Pa.s, the temperature span range is 40-80 ℃.
2. The method for producing the mineral wool by utilizing the silicomanganese and nickel-iron alloy smelting waste slag according to the claim 1, is characterized in that: the quality of the obtained slag wool meets the GB/T11835-2016 requirement.
3. The method for producing the mineral wool by utilizing the silicomanganese and nickel-iron alloy smelting waste slag according to the claim 2, characterized in that: according to the mass ratio: smelting waste slag of silicon-manganese alloy: the ferronickel smelting waste residue =4: 6-8: 2.
4. The method for producing the mineral wool by utilizing the silicomanganese and nickel-iron alloy smelting waste slag according to the claim 2, characterized in that: according to the mass ratio: smelting waste slag of silicon-manganese alloy: 3, preparing silicomanganese alloy smelting waste residues and ferronickel alloy smelting waste residues; uniformly mixing to obtain mixed slag, wherein the temperature span interval of the mixed slag in 1-3 Pa.s is 58 ℃, and the complete melting temperature is 1401 ℃; heating the mixed slag in an electric furnace to 1500 ℃, melting, and keeping the temperature for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, and slag cotton products are collected through a slag cotton collector; the produced slag wool product is detected and analyzed according to the national standard GB/T11835-2016 requirements on heat-insulating rock wool, slag wool and products thereof, the average diameter of the fiber is 4.8 microns, the slag ball content is 6.1 percent, and the thermal load shrinkage temperature is 716 ℃.
5. The method for producing the mineral wool by utilizing the silicomanganese and nickel-iron alloy smelting waste slag according to the claim 2, characterized in that: according to the mass ratio: smelting waste slag of silicon-manganese alloy: 2, preparing silicomanganese alloy smelting waste and ferronickel alloy smelting waste, wherein the ferronickel alloy smelting waste is =8: 2; uniformly mixing to obtain mixed slag, wherein the temperature span interval of the mixed slag in 1-3 Pa.s is 67 ℃, and the complete melting temperature is 1389 ℃; heating the mixed slag in an electric furnace to 1500 ℃, melting, and keeping the temperature for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, and slag cotton products are collected through a slag cotton collector; the produced slag wool product is detected and analyzed according to the requirements of the national standard GB/T11835-.
6. The method for producing the mineral wool by utilizing the silicomanganese and nickel-iron alloy smelting waste slag according to the claim 2, characterized in that: according to the mass ratio: smelting waste slag of silicon-manganese alloy: the ferronickel smelting waste residue =6:4, and silicomanganese smelting waste residue and ferronickel smelting waste residue are prepared; uniformly mixing to obtain mixed slag, wherein the temperature span interval of the mixed slag in 1-3 Pa.s is 45 ℃, and the complete melting temperature is 1456 ℃; heating the mixed slag in an electric furnace to 1500 ℃, melting, and keeping the temperature for 5 min; slag is melted and homogenized, slag pouring operation and cotton forming operation are carried out through centrifugation, four-roller rotating speed parameters are set to be 1#2200r/min, 2#3000r/min, 3#4500r/min and 4#5500r/min, and slag cotton products are collected through a slag cotton collector; the produced slag wool product is detected and analyzed according to the requirements of the national standard GB/T11835-.
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