CN115819878A - Method for producing methacrylic molecule filling master batch by utilizing coal gangue - Google Patents
Method for producing methacrylic molecule filling master batch by utilizing coal gangue Download PDFInfo
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- CN115819878A CN115819878A CN202111084657.7A CN202111084657A CN115819878A CN 115819878 A CN115819878 A CN 115819878A CN 202111084657 A CN202111084657 A CN 202111084657A CN 115819878 A CN115819878 A CN 115819878A
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- coal gangue
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- 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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Abstract
The application discloses a method for producing a methacrylic molecule filling master batch by utilizing coal gangue. The method comprises the following steps: s1, pretreating coal gangue to obtain modified additive powder; s2, mixing the modified additive powder obtained in the step S1 with an auxiliary agent; and S3, putting the materials mixed in the step S2 into granulation equipment for granulation to obtain the environment-friendly degradable methacrylic molecule filling master batch. According to the method provided by the disclosure, the total mass of calcium oxide and calcium carbonate in the calcined product is up to more than 50% by controlling the calcination time and the calcination temperature, the calcined product is ground to obtain mixture powder with the particle size of less than 1250 meshes, and the mixture powder is mixed with polypropylene or polyethylene to obtain modified additive powder, so that the chemical secondary pollution is changed into pollution-free physical treatment, and the production process has the characteristics of no waste water, no waste residue, no waste gas and environmental protection.
Description
Technical Field
The application relates to the technical field of physical and chemical treatment of industrial solid wastes, in particular to a method for producing a methacrylic molecular filling master batch by utilizing coal gangue.
Background
The industrial solid waste refers to solid waste generated in industrial production activities, for example, non-hazardous solid waste such as blast furnace slag, tailings, steel slag, red mud, nonferrous metal slag, coal gangue, fly ash, coal slag, sulfuric acid slag, desulfurized gypsum and salt slurry. The methacrylic molecule filling master batch is the most important additive in recyclable and degradable auxiliaries related to the production of PAL, PCL, PBAT and other products, the PAL is a packaging material in the current major consumption field, which accounts for about 65 percent of the total consumption, the growth is predicted to be 20 to 30 percent in the future, and the average yield increase of China reaches 34.22 percent in 2010 to 2015.
In the aspect of preparing the composite material by utilizing the coal gangue, the prior art is still in the starting stage, further research and analysis are needed, the degradability and the reusability are further improved under the condition of ensuring that the composite material has enough mechanical properties, the physical treatment is used, the addition amount of industrial solid wastes is increased as much as possible, and a new way is opened up for expanding the large-scale high-value utilization of the industrial solid wastes.
Disclosure of Invention
The purpose of the disclosure is to overcome the defects of the prior art, provide a method for producing a methacrylic molecule filling master batch by utilizing coal gangue, promote the large-scale and high-value utilization of the coal gangue, and simultaneously expand and replace the application field of the traditional limiting material.
According to a first aspect of embodiments of the present disclosure, there is provided a method for producing a methacrylic molecular filler masterbatch from coal gangue, which is characterized in that: the method comprises the following steps:
s1, pretreating coal gangue to obtain modified additive powder;
s2, mixing the modified additive powder obtained in the step S1 with an auxiliary agent;
and S3, putting the material mixed in the step S2 into granulation equipment for granulation to obtain the environment-friendly degradable methacrylic molecule filling master batch.
In one embodiment, in step S1, the preprocessing the coal gangue to obtain the modified additive powder includes:
s11, placing the coal gangue at a preset temperature for calcining for a preset time, so that the total mass of calcium oxide and calcium carbonate in a calcined product reaches over 50%; wherein, in the calcined product, the proportion of calcium oxide and the proportion of calcium carbonate are both related to the preset temperature and the preset time;
s12, cooling the calcined product and then grinding the calcined product to obtain mixed powder with the granularity of less than 1250 meshes;
and S13, mixing the mixture powder with the granularity of less than 1250 meshes with polypropylene or polyethylene to obtain modified additive powder.
In an embodiment, the modified additive powder and the additive obtained in step S1 include:
mixing the modified additive powder obtained in the step S1 with a heat stabilizer, an antioxidant and a lubricant;
wherein the mass content of the modified additive powder is 97-99%, and the total mass content of the heat stabilizer, the antioxidant and the lubricant is 1-3%.
In one embodiment, in step S13,
the mass content of the mixture powder with the granularity less than 1250 meshes is 70-90%, and the mass content of the polypropylene or the polyethylene is 10-30%.
In one embodiment of the present invention,
in step S11, the calcined product contains 30 to 40% of calcium oxide and 20 to 30% of calcium carbonate.
In one embodiment, in step S11,
the preset temperature is 1000-1800 ℃, and the preset time is 2-3h.
In one embodiment, before mixing the modified additive powder obtained in step S1 with the additive, the method further includes:
s1', carrying out desulfurization treatment on the modified additive powder obtained in the step S1.
In one embodiment, the thermal stabilizer comprises either stearic acid or benzoic acid or a combination of both.
In one embodiment, the antioxidant comprises any one or a combination of antioxidants 1076 and CA.
In one embodiment, the lubricant comprises any one or a combination of stearic acid, calcium stearate, polyethylene, and paraffin wax.
Compared with the prior art, the method for producing the methacrylic molecule filling master batch by using the coal gangue has the advantages that the total mass of calcium oxide and calcium carbonate in a calcined product is more than 50% by controlling the calcining time and the calcining temperature, the calcined product is ground to obtain mixed powder with the granularity of less than 1250 meshes, and the mixed powder is mixed with polypropylene or polyethylene to obtain modified additive powder, so that the chemical secondary pollution is changed into pollution-free physical treatment, the production process has the process characteristics of no waste water, no waste residue, no waste gas and environmental protection, the product has natural degradation, mechanical properties are low temperature resistant, the recycling can be realized, the large-scale high-value utilization of industrial solid wastes such as fly ash, coal gangue, desulfurized gypsum and the like is promoted, and the traditional fiber material and plastic material are replaced.
Meanwhile, the degradable property and the physical property of the methacrylic molecule filling master batch prepared by the method for producing the methacrylic molecule filling master batch by utilizing the coal gangue are increased, and the prepared master batch can replace the traditional fibrous material and the high-strength high-conductivity heat-resistant material and the corrosion-resistant material, is a great breakthrough in the field of implementing new material innovation and development, and changes the previous modes aiming at coal gangue thermochemical treatment and landfill treatment, so that zero emission and recyclable ecological environment protection and treatment are realized, the secondary pollution problem is avoided, the production rate and the application range are improved, and the way that the traditional coal gangue is only used for general plastic products and building material products as an additive is changed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart of a method for producing a methacrylic molecule filling masterbatch by using coal gangue according to an embodiment of the present disclosure.
Fig. 2 is a flowchart of another method for producing a methacrylic molecule filling masterbatch by using coal gangue according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a flowchart of a method for producing a methacrylic molecule filling masterbatch by using coal gangue according to an embodiment of the present disclosure. As shown in fig. 1, the method includes:
step S1, pretreating coal gangue to obtain modified additive powder;
in an embodiment, in step S1, as shown in fig. 2, the preprocessing the coal gangue to obtain the modified additive powder includes:
s11, placing the coal gangue at a preset temperature for a preset time for calcination, so that the total mass of calcium oxide and calcium carbonate in the calcined product reaches more than 50%; wherein, in the calcined product, the proportion of the calcium oxide and the proportion of the calcium carbonate are both related to the preset temperature and the preset time;
in one embodiment, the preset temperature is 1000-1800 ℃ and the preset time is 2-3h.
In the step, the preset temperature is set to 1000-1800 ℃, and the preset time is set to 2-3 hours, so as to ensure that the total mass of calcium oxide and calcium carbonate in the calcined product obtained in the embodiment of the disclosure reaches more than 50%.
In one embodiment, the calcined product has a calcium oxide content of 30-40% and a calcium carbonate content of 20-30%.
S12, cooling the calcined product and then grinding the calcined product to obtain mixed powder with the granularity of less than 1250 meshes;
in the step, the calcined product is cooled and then ground, so that the obtained mixed powder with the granularity of less than 1250 meshes is nano-scale stone powder, and the mixed powder is conveniently and uniformly mixed with other materials in the subsequent process.
And S13, mixing the mixture powder with the granularity smaller than 1250 meshes with polypropylene or polyethylene to obtain modified additive powder.
In this step, the mixture powder with a particle size of less than 1250 mesh and polypropylene or polyethylene are mixed in a mixer to ensure that the uniformity meets the preset requirement, so as to obtain the modified additive powder.
In one embodiment, the mixture powder with the particle size less than 1250 meshes is 70-90% by mass, and the polypropylene or polyethylene is 10-30% by mass.
S2, mixing the modified additive powder obtained in the step S1 with an auxiliary agent;
in an embodiment, the modified additive powder and the additive obtained in step S1 include:
mixing the modified additive powder obtained in the step S1 with a heat stabilizer, an antioxidant and a lubricant;
wherein the mass content of the modified additive powder is 97-99%, and the total mass content of the heat stabilizer, the antioxidant and the lubricant is 1-3%.
In one embodiment, the thermal stabilizer comprises either stearic acid or benzoic acid or a combination of both.
In one embodiment, the antioxidant comprises any one or a combination of antioxidants 1076 and CA.
In one embodiment, the lubricant comprises any one or a combination of stearic acid, calcium stearate, polyethylene, and paraffin wax.
Optionally, before mixing the modified additive powder obtained in step S1 with an auxiliary agent, the method further includes:
s1', carrying out desulfurization treatment on the modified additive powder obtained in the step S1.
In this example, the additive powder after modification was subjected to desulfurization treatment before being mixed with the auxiliary agent, thereby removing harmful substances such as sulfur dioxide and the like that pollute the air.
Compared with the prior art, the method for producing the methacrylic molecule filling master batch by using the coal gangue has the advantages that the total mass of calcium oxide and calcium carbonate in a calcined product is more than 50% by controlling the calcining time and the calcining temperature, the calcined product is ground to obtain mixed powder with the granularity of less than 1250 meshes, and the mixed powder is mixed with polypropylene or polyethylene to obtain modified additive powder, so that the chemical secondary pollution is changed into pollution-free physical treatment, the production process has the process characteristics of no waste water, no waste residue, no waste gas and environmental protection, the product has natural degradation, mechanical properties are low temperature resistant, the recycling can be realized, the large-scale high-value utilization of industrial solid wastes such as fly ash, coal gangue, desulfurized gypsum and the like is promoted, and the traditional fiber material and plastic material are replaced.
Meanwhile, the methacrylic molecule filling master batch prepared by the method for producing the methacrylic molecule filling master batch by utilizing the coal gangue, which is provided by the embodiment of the disclosure, has the advantages of increased degradability and physical properties, and the prepared master batch can replace the traditional fibrous material and the high-strength high-conductivity heat-resistant material and corrosion-resistant material, is a major breakthrough in the field of implementing new material innovation and development, and changes the traditional mode aiming at coal gangue thermochemical treatment and landfill treatment, so that zero emission and recyclable ecological environmental protection and treatment are realized, the secondary pollution problem is avoided, the productivity and the application range are improved, and the way that the traditional coal gangue is only used as an additive for general plastic products and building material products is changed.
The method for producing a methacrylic molecular filling master batch by using coal gangue provided in the embodiments of the present disclosure will be described in detail with specific examples.
S1, pretreating coal gangue to obtain modified additive powder; the method specifically comprises the following steps:
step S11, pre-calcining the coal gangue at 1000-1800 ℃ for 2-3 hours to ensure that the total mass of calcium oxide and calcium carbonate in the calcined product reaches 57%; wherein, the content of calcium oxide is 35 percent, and the content of calcium carbonate is 22 percent.
S12, cooling the calcined product and then grinding the calcined product to obtain mixture powder with the granularity of less than 1250 meshes;
and S13, mixing 70-90% by mass of mixture powder with the granularity of less than 1250 meshes with 10-30% by mass of polypropylene or polyethylene to obtain modified additive powder.
And S2, mixing the modified additive powder with the mass content of 97-99% obtained in the step S1 with a heat stabilizer, an antioxidant and a lubricant with the total mass content of 1-3%.
And S3, putting the material mixed in the step S2 into granulation equipment for granulation to obtain the environment-friendly degradable methacrylic molecule filling master batch. Wherein the heat stabilizer comprises any one of stearic acid or benzoic acid or a combination of the two; the antioxidant is one or more of antioxidant 1076 and antioxidant CA; the lubricant is any one or combination of stearic acid, calcium stearate, polyethylene and paraffin.
In the embodiments of the present disclosure, after the methacrylic molecule-filled masterbatch is obtained, the masterbatch can be used to produce disposable consumables, building material decorations, industrial packages, and the like by using an extrusion device, and the energy consumption during the production process is low, which is helpful to solve the problems of global warming caused by carbon dioxide. The prepared product can be taken as garbage to be sent to an incinerator for combustion treatment after being used, because the polypropylene or polyethylene containing the fine particles of the methacrylic molecule filling master batch and the nontoxic polypropylene or polyethylene can be combusted, the fine particles can combust the polypropylene or polyethylene due to pulverization during combustion, black smoke cannot be generated due to anoxic smoldering combustion in the combustion process, the nontoxic polypropylene or polyethylene has no toxicity release after being combusted, the discharge amount of carbon dioxide is minimum, the global warming can be slowed down, related products are abandoned outdoors after being used, and the crushed eggshell is embrittled into after being irradiated by sunlight for about six months and returns to the nature.
Compared with the patent with publication number CN104356505A, the method for producing the methacrylic molecule filling master batch by utilizing the coal gangue, provided by the embodiment of the disclosure, has the following comparative properties:
wherein the test standard is referred to GB \ T2679-2005, and extruded layer products with the thickness of 3mm and 5mm are produced respectively. The product with a thickness of 3mm in the examples of the present disclosure is referred to as example 1, and the product with a thickness of 5mm is referred to as example 2; a product having a thickness of 3mm in publication No. CN104356505A is referred to as comparative 1, and a product having a thickness of 5mm is referred to as comparative 2.
TABLE 1 comparison of Properties
| Comparison categories | Comparative example 1 | Comparative example 2 | Example 1 | Example 2 |
| Thickness (mm) | 3 | 5 | 3 | 5 |
| Burst strength (kpa) | 588 | 784 | 693 | 932 |
| Puncture strength (J) | 12 | 16 | 18 | 23 |
| Edge pressure strength | 3.5 | 4.0 | 4.5 | 5.5 |
As can be seen from the data in table 1, the burst strength, puncture strength, and edge crush strength of example 1 of the present disclosure were improved by 18%, 50%, and 29%, respectively, as compared to comparative example 1. Compared with comparative example 2, the burst strength, puncture strength, and edge crush strength of example 2 of the present disclosure were improved by 19%, 44%, and 37%, respectively.
Compared with the patent with publication number CN104356505A, the method for producing the methacrylic molecule filling master batch by utilizing the coal gangue provided by the embodiment of the disclosure has the following comparative processes:
the patent with publication number CN104356505A belongs to the field of chemical material preparation, and the method for producing the methacrylic molecule filling master batch by utilizing coal gangue, which is provided by the embodiment of the disclosure, belongs to the field of physics.
In order to enable a person skilled in the art to better understand the method of the embodiment of the present disclosure, the embodiment of the present disclosure performs detection on a methacrylic molecule filling master batch produced by using coal gangue according to GB18580-2001, GB18586-2001, GB \ T16422.2-2014 limit value E1, and the detection result is as follows:
finally, the method for producing the methacrylic molecule filling master batch by utilizing the coal gangue provided by the embodiment of the disclosure does not need water washing, strong acid, strong alkali and chemical preparation of bleaching agent, completely uses a physical calcination method, develops advantages and disadvantages, develops unique water resistance, moisture resistance, moth resistance, chemical corrosion resistance, tearing resistance, good flattening property, good surface smoothness and other mechanical and physical advantages, does not add a drop of water in the production process, achieves no discharge of waste water, waste gas and waste residue, controls environmental protection from the source, and saves petroleum resources. The production process adopts a dry system for inorganic substance treatment, can be degraded, reduces the emission of carbon dioxide gas, is non-toxic, and has the advantages of good antibacterial property and the like. The product prepared by utilizing the methacrylic molecule filling master batch has wide application field, thereby replacing the traditional fiber preparation and common plastic materials, saving a large amount of forest resources and reducing secondary pollution for the society.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A method for producing a methacrylic molecule filling master batch by utilizing coal gangue is characterized by comprising the following steps: the method comprises the following steps:
s1, pretreating coal gangue to obtain modified additive powder;
s2, mixing the modified additive powder obtained in the step S1 with an auxiliary agent;
and S3, putting the materials mixed in the step S2 into granulation equipment for granulation to obtain the environment-friendly degradable methacrylic molecule filling master batch.
2. The method for producing the methacrylic molecule filling masterbatch by using the coal gangue as claimed in claim 1, wherein in the step S1, the coal gangue is pre-treated to obtain the modified additive powder, and the method comprises:
s11, placing the coal gangue at a preset temperature for a preset time for calcination, so that the total mass of calcium oxide and calcium carbonate in the calcined product reaches more than 50%; wherein, in the calcined product, the proportion of the calcium oxide and the proportion of the calcium carbonate are both related to the preset temperature and the preset time;
s12, cooling the calcined product and then grinding the calcined product to obtain mixed powder with the granularity of less than 1250 meshes;
and S13, mixing the mixture powder with the granularity of less than 1250 meshes with polypropylene or polyethylene to obtain modified additive powder.
3. The method for producing the filling masterbatch of methacrylic molecules by using the coal gangue as claimed in claim 1 or 2, wherein in the step S2, the modifying additive powder and the auxiliary agent obtained in the step S1 comprise:
mixing the modified additive powder obtained in the step S1 with a heat stabilizer, an antioxidant and a lubricant;
wherein the mass content of the modified additive powder is 97-99%, and the total mass content of the heat stabilizer, the antioxidant and the lubricant is 1-3%.
4. The method for producing the molecular filling masterbatch of methacrylic acid using coal gangue as claimed in claim 2, wherein in step S13,
the mass content of the mixture powder with the granularity less than 1250 meshes is 70-90%, and the mass content of the polypropylene or the polyethylene is 10-30%.
5. The method for producing the filling masterbatch of methacrylic molecules by using the coal gangue as recited in claim 2, wherein in the step S11, the calcined product contains 30-40% of calcium oxide and 20-30% of calcium carbonate.
6. The method for producing the molecular filling masterbatch of methacrylic acid using coal gangue as claimed in claim 2, wherein in step S11,
the preset temperature is 1000-1800 ℃, and the preset time is 2-3h.
7. The method for producing the filling masterbatch of methacrylic molecules by using the coal gangue as claimed in claim 1 or 2, wherein before the modified additive powder obtained in the step S1 is mixed with the additive, the method further comprises:
s1', carrying out desulfurization treatment on the modified additive powder obtained in the step S1.
8. The method for producing the molecular filling masterbatch of methacrylic acid by using coal gangue as claimed in claim 3, wherein the heat stabilizer comprises one or a combination of stearic acid and benzoic acid.
9. The method for producing the molecular filling masterbatch of methacrylic acid from coal gangue as claimed in claim 3, wherein the antioxidant comprises any one or a combination of antioxidant 1076 and antioxidant CA.
10. The method for producing the molecular filling masterbatch of methacrylic acid by using coal gangue as claimed in claim 3, wherein the lubricant comprises any one or a combination of stearic acid, calcium stearate, polyethylene and paraffin wax.
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| CN202111084657.7A CN115819878A (en) | 2021-09-16 | 2021-09-16 | Method for producing methacrylic molecule filling master batch by utilizing coal gangue |
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| CN202111084657.7A CN115819878A (en) | 2021-09-16 | 2021-09-16 | Method for producing methacrylic molecule filling master batch by utilizing coal gangue |
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