CN110803884B - Process method for producing high-strength decorative plate by using graphite tailings - Google Patents
Process method for producing high-strength decorative plate by using graphite tailings Download PDFInfo
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- CN110803884B CN110803884B CN201911224039.0A CN201911224039A CN110803884B CN 110803884 B CN110803884 B CN 110803884B CN 201911224039 A CN201911224039 A CN 201911224039A CN 110803884 B CN110803884 B CN 110803884B
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- graphite
- graphite tailing
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- tailing powder
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
Abstract
The invention discloses a process method for producing a high-strength decorative plate by using graphite tailings, which relates to the technical field of composite materials.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a process method for producing a high-strength decorative plate by using graphite tailings.
Background
Graphite is an inorganic non-metallic material essential to the chemical and electrical industries, and plays a significant role in the national defense industry and high-tech products. However, a large amount of graphite tailings are left after the graphite is mined from the graphite ore, and the existing treatment method not only occupies a large amount of land, but also seriously pollutes the ecological environment. The graphite has stable structure and property and excellent conductivity, so that the graphite can be used as an electromagnetic shielding material.
Disclosure of Invention
In order to fully utilize the graphite tailings and reduce environmental pollution, the invention provides a process method for producing a high-strength decorative plate by utilizing the graphite tailings.
The technical scheme adopted by the invention is as follows: a process method for producing a high-strength decorative plate by using graphite tailings comprises the following steps:
s1, preprocessing;
s1.1, performing primary crushing, namely putting the graphite tailings into a crusher to be crushed into graphite tailing powder with the particle size of 100-150 meshes;
s1.2, primary drying, namely placing the graphite tailing powder in the previous step into an oven to be baked until the water content is lower than 0.5%, wherein the baking temperature is 100-120 ℃;
s1.3, magnetic separation, namely placing the graphite tailing powder in the previous step in a vibration magnetic separation bed to separate magnetic graphite tailing powder, and reserving non-magnetic graphite tailing powder;
s1.4, acid washing, namely placing the retained nonmagnetic graphite tailing powder in the previous step into a reaction kettle, adding strong acid liquor to carry out acid washing to remove active metal oxides, wherein the acid washing temperature is 80-120 ℃, and the acid washing time is 0.5-2 hours;
s1.5, washing, namely washing the non-magnetic graphite tailing powder after acid washing to be neutral by using industrial pure water;
s1.6, secondary drying, namely placing the nonmagnetic graphite tailing powder in the previous step into an oven to be baked until the water content is lower than 0.5%, wherein the baking temperature is 100-120 ℃;
s1.7, performing secondary crushing, namely placing the nonmagnetic graphite tailing powder in the previous step into a grinding device to grind the nonmagnetic graphite tailing powder with the particle size of 300-350 meshes;
s2, mixing materials, namely putting 40-60 parts of the nonmagnetic graphite tailing micro powder obtained in the step S1, 5-10 parts of glass fiber, 30-55 parts of epoxy resin and a compatilizer into a mixing device, wherein the mixing temperature is 100-180 ℃, and the mixing time is 0.5-2 hours;
s3, compression molding; placing the mixed material obtained in the step S2 in a die pressing device, controlling the die pressing pressure to be 10-20 MPa and the die pressing temperature to be 170-200 ℃, and performing die pressing for 1-3 hours to obtain a graphite tailing-epoxy resin plate;
s4, covering a film, placing the graphite tailing-epoxy resin plate obtained in the step S3 into a film covering device, and covering the surface of the graphite tailing-epoxy resin plate with a plastic film;
and S5, checking, packaging and warehousing.
In the process method for producing the high-strength decorative plate by using the graphite tailings, the S1.4 medium-strength acid solution is a hydrochloric acid solution or a nitric acid solution, and the concentration of the hydrochloric acid solution or the nitric acid solution is 10-20%.
In the process method for producing the high-strength decorative plate by using the graphite tailings, the total parts of the non-magnetic graphite tailing micro powder, the glass fiber and the epoxy resin in the S2 are 100 parts, and the compatilizer is 5-10 parts.
The invention has the advantages that the graphite tailings are deeply pretreated to remove the magnetic components and the active metal oxides in the graphite tailings, the prepared decorative plate has stronger structural stability, the decorative plate is prevented from deforming due to internal oxidation, and meanwhile, the decorative plate has better electromagnetic radiation shielding effect due to higher content of graphite powder in the decorative plate.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the present invention is further described below, and it is obvious that the following description is only one embodiment of the present invention, and it will be obvious to those skilled in the art that other embodiments can be obtained according to this embodiment without creative efforts, and all fall within the protection scope of the present invention.
A process method for producing a high-strength decorative plate by using graphite tailings comprises the following steps:
s1, preprocessing;
s1.1, crushing at one time, namely placing the graphite tailings into a crusher to crush the graphite tailings into graphite tailing powder with the particle size of 150 meshes;
s1.2, primary drying, namely placing the graphite tailing powder in the previous step into an oven to be baked until the water content is lower than 0.5%, wherein the baking temperature is 120 ℃;
s1.3, magnetic separation, namely placing the graphite tailing powder in the previous step in a vibration magnetic separation bed to separate magnetic graphite tailing powder, and reserving non-magnetic graphite tailing powder;
s1.4, acid washing, namely placing the retained nonmagnetic graphite tailing powder in the previous step into a reaction kettle, adding strong acid liquor to carry out acid washing to remove active metal oxides, wherein the acid washing temperature is 120 ℃, and the acid washing time is 0.5;
s1.5, washing, namely washing the non-magnetic graphite tailing powder after acid washing to be neutral by using industrial pure water;
s1.6, secondary drying, namely placing the nonmagnetic graphite tailing powder in the previous step in an oven to bake until the water content is lower than 0.5 percent and the baking temperature is 120 ℃;
s1.7, performing secondary crushing, namely placing the nonmagnetic graphite tailing powder in the previous step into a grinding device to grind the nonmagnetic graphite tailing powder with the particle size of 350 meshes;
s2, mixing materials, namely putting 40 parts of the nonmagnetic graphite tailing micro powder obtained in the step S1, 10 parts of glass fiber, 50 parts of epoxy resin and a compatilizer into a mixing device, wherein the mixing temperature is 180 ℃, and the mixing time is 1 h;
s3, compression molding; placing the mixed material obtained in the step S2 in a die pressing device, controlling the die pressing pressure to be 20MPa and the die pressing temperature to be 200 ℃, and performing die pressing for 1h to obtain a graphite tailing-epoxy resin plate;
s4, covering a film, placing the graphite tailing-epoxy resin plate obtained in the step S3 into a film covering device, and covering the surface of the graphite tailing-epoxy resin plate with a plastic film;
and S5, checking, packaging and warehousing.
The S1.4 medium-strength acid solution is a hydrochloric acid solution or a nitric acid solution, and the concentration of the hydrochloric acid solution or the nitric acid solution is 20%.
The total parts of the nonmagnetic graphite tailing micro powder, the glass fiber and the epoxy resin in the S2 are 100 parts, and the compatilizer is 10 parts.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (3)
1. A process method for producing a high-strength decorative plate by using graphite tailings is characterized by comprising the following steps:
s1, preprocessing;
s1.1, performing primary crushing, namely putting the graphite tailings into a crusher to be crushed into graphite tailing powder with the particle size of 100-150 meshes;
s1.2, primary drying, namely placing the graphite tailing powder in the previous step into an oven to be baked until the water content is lower than 0.5%, wherein the baking temperature is 100-120 ℃;
s1.3, magnetic separation, namely placing the graphite tailing powder in the previous step in a vibration magnetic separation bed to separate magnetic graphite tailing powder, and reserving non-magnetic graphite tailing powder;
s1.4, acid washing, namely placing the retained nonmagnetic graphite tailing powder in the previous step into a reaction kettle, adding strong acid liquor to carry out acid washing to remove active metal oxides, wherein the acid washing temperature is 80-120 ℃, and the acid washing time is 0.5-2 hours;
s1.5, washing, namely washing the non-magnetic graphite tailing powder after acid washing to be neutral by using industrial pure water;
s1.6, secondary drying, namely placing the nonmagnetic graphite tailing powder in the previous step into an oven to be baked until the water content is lower than 0.5%, wherein the baking temperature is 100-120 ℃;
s1.7, performing secondary crushing, namely placing the nonmagnetic graphite tailing powder in the previous step into a grinding device to grind the nonmagnetic graphite tailing powder with the particle size of 300-350 meshes;
s2, mixing materials, namely putting 40-60 parts of the nonmagnetic graphite tailing micro powder obtained in the step S1, 5-10 parts of glass fiber, 30-55 parts of epoxy resin and a compatilizer into a mixing device, wherein the mixing temperature is 100-180 ℃, and the mixing time is 0.5-2 hours;
s3, compression molding; placing the mixed material obtained in the step S2 in a die pressing device, controlling the die pressing pressure to be 10-20 MPa and the die pressing temperature to be 170-200 ℃, and performing die pressing for 1-3 hours to obtain a graphite tailing-epoxy resin plate;
s4, covering a film, placing the graphite tailing-epoxy resin plate obtained in the step S3 into a film covering device, and covering the surface of the graphite tailing-epoxy resin plate with a plastic film;
and S5, checking, packaging and warehousing.
2. The process method for producing the high-strength decorative plate by using the graphite tailings as claimed in claim 1, wherein the S1.4 medium-strength acid solution is a hydrochloric acid solution or a nitric acid solution, and the concentration of the hydrochloric acid solution or the nitric acid solution is 10-20%.
3. The process method for producing the high-strength decorative plate by using the graphite tailings according to claim 1, wherein the total parts of the nonmagnetic graphite tailing micropowder, the glass fiber and the epoxy resin in the S2 are 100 parts, and the content of the compatilizer is 5-10 parts.
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| CN111320455A (en) * | 2020-03-02 | 2020-06-23 | 山东领军科技集团有限公司 | Method for preparing high-strength GRC extruded board from graphite tailings |
| CN111320406A (en) * | 2020-03-03 | 2020-06-23 | 山东领军科技集团有限公司 | Method for preparing mineral concrete regeneration admixture from graphite tailings |
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| CN202809875U (en) * | 2012-10-30 | 2013-03-20 | 哈尔滨理工大学 | Light high-strength inorganic heat insulation wallboard |
| CN104017258B (en) * | 2014-06-12 | 2016-03-30 | 中国地质大学（北京） | A kind of conductive rubber graphite tailing composite granule filler and Synthesis and applications thereof |
| KR101652724B1 (en) * | 2014-12-03 | 2016-08-31 | 유기달 | Color Brick for interior materials and manufacturing method thereof |
| CN109575443A (en) * | 2018-12-24 | 2019-04-05 | 中国地质大学（北京） | A kind of graphite tailing composite material and preparation method |
| CN109574599B (en) * | 2019-01-29 | 2021-11-26 | 宁波盈峰新型建材有限公司 | Environment-friendly durable building material |
| CN110482938A (en) * | 2019-09-27 | 2019-11-22 | 安徽虹达道路桥梁工程有限公司 | A kind of environmental-friendly construction material and preparation method thereof |
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