CN105621958A - Method for preparing environment-friendly building decoration material by using rock crystal waste - Google Patents
Method for preparing environment-friendly building decoration material by using rock crystal waste Download PDFInfo
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- CN105621958A CN105621958A CN201610075962.2A CN201610075962A CN105621958A CN 105621958 A CN105621958 A CN 105621958A CN 201610075962 A CN201610075962 A CN 201610075962A CN 105621958 A CN105621958 A CN 105621958A
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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
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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
- C04B20/023—Chemical treatment
-
- 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
- C04B20/04—Heat treatment
-
- 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
- C04B26/28—Polysaccharides or derivatives thereof
- C04B26/285—Cellulose or derivatives thereof
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00431—Refractory materials
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention relates to a method for preparing an environment-friendly building decoration material by using rock crystal waste, belongs to the field of preparation of building materials and provides a method for preparing an environment-friendly building decoration material by using rock crystal waste in order to solve the problems that littering of rock crystal waste causes environmental pollution at present, a traditional decoration material needs high consumption of wood and metal materials and the material is not resistant to water and flame, has overproof formaldehyde content and is not wear-resistant. The method comprises:, water selecting light impurities, calcining and activating the light impurities at high temperature, subjecting them to surface modification through substances such as heptadecanoic acid and methyl ester sulfonate so that the impurities can degrade harmful substances, mixing with various aids, and hot pressing to prepare the environment-friendly building decoration material.
Description
Technical field
The present invention relates to a kind of method utilizing seeing stone waste material to prepare Environmental-friendconstruction construction decoration material, belong to construction material preparation field.
Background technology
Crystal (mineral name quartz) is important industrial mineral and jewel mineral. Main component is silicon dioxide, and silicon therein, oxygen atom are the ordered arrangement of rule, becomes the crystalline solid with certain crystal structure. Wherein possibly together with the gold of various trace, so various different color can be formed. Mineral crystal is national rare mineral products, country using crystal mineral products for a long time as special nonmetal mineral resources in addition development and protection, and very limited, can not regenerate after adopting. In the crystal course of processing, the waste residue of generation, precipitation powder the like waste, disorderly fallen all the time everywhere, and contaminated environment, containing SiO in crystal waste material270.21%, if going out silicon dioxide with relatively low cost separating-purifying from this refuse, not only prevent its contaminated environment, additionally it is possible to make its recycling, commercial production is significant.
Along with the living standard of people improves constantly, increasing people use various ornament materials decorated house and various the articles for daily use. For saving timber, people employ substantial amounts of artificial decoration material when finishing. The main method producing now artificial wooden ornament materials is: first Woody plant is ground into fiber powder, is then mixed with binding agent, firming agent by fiber powder, then compressing on forcing press. The wood decorative material produced in this way also exists that dull coloring, hardness is low, not wear-resisting and shortcoming without natural vein. Traditional ornament materials needs to consume substantial amounts of timber and metal material, and there is water funk inflammable, the problem such as content of formaldehyde exceeds standard, installation is loaded down with trivial details, decorative effect is poor, maintenance is difficult, the life-span is short, price is high.
Summary of the invention
The technical problem to be solved: for current crystal waste material by random contaminated environment everywhere, and traditional ornament materials needs to consume substantial amounts of timber and metal material, and also exist water funk inflammable, content of formaldehyde exceeds standard and not wear-resisting problem, the invention provides a kind of method utilizing seeing stone waste material to prepare Environmental-friendconstruction construction decoration material, first the present invention carries out wet concentration and takes out light impurities, it is at high temperature carried out calcining and activating again, then again through pearly-lustre fat acid, it is carried out surface modification by the materials such as Fatty acid methyl ester sodium sulfonate, make its degradable harmful substance, finally mix with various auxiliary agents, hot pressing obtains Environmental-friendconstruction construction decoration material.
For solving above-mentioned technical problem, the present invention adopts the technical scheme as described below to be:
(1) take seeing stone waste material and put in container, it is added thereto to water logging and does not have waste material 5��7cm, re-use agitator and be stirred 20��30min with rotating speed 200r/min, stand 5��8min subsequently, remove the impurity swimming in the water surface, then it is filtered, seeing stone waste material after collecting and impurity removing, puts in baking oven, dry at 100 DEG C, put it into again in pulverizer and pulverize, cross 150 mesh sieves;
(2) the seeing stone waste material granule of gained after above-mentioned sieving is put in calcining furnace, at 800��900 DEG C, after calcining 1��2h, seeing stone waste material after calcining is cooled to room temperature by the hydrogen using temperature to be 5 DEG C, is taken out by the seeing stone waste material after cooling subsequently, puts in ball mill, select stainless-steel grinding ball, grind 40��50min, cross 200 mesh sieves, obtain pretreated water spar waste granules;
(3) take the pretreated water spar waste granules of the above-mentioned gained of 500��800g and put in the four-hole boiling flask taking into account reflux condensing tube with agitator, temperature, it is added thereto to 40��70g pearly-lustre fat acid, 50��70mL flavanonol and 20��30g Fatty acid methyl ester sodium sulfonate more respectively, after stirring, being added thereto to the alcoholic solution that 200��300mL mass fraction is 30%, it is 7.5��8.0 that the ammonia using mass fraction to be 25% regulates pH;
(4) above-mentioned flask is moved in water-bath, be warming up to 70��80 DEG C, start agitator simultaneously and it is stirred, after insulation 1��2h, naturally cool to room temperature, be filtered subsequently, use dehydrated alcohol to put into after filter cake is rinsed 3��5 times in baking oven dry, obtain modified seeing stone waste material;
(5) count by weight, take 45��50 parts of modified seeing stone waste materials, 4��8 parts of polyvinyl alcohol, 1��2 part of adipate ester, 20��25 parts of polyethylene, 5��7 parts of carboxymethyl celluloses and 13��20 water, put in mixer after mix homogeneously, mixture is put in stainless steel mould, again mould is put in heat pressing forming machines, design temperature is 195��220 DEG C, extruded, can obtain Environmental-friendconstruction construction decoration material.
The application process of the present invention: be used for decorating room by the Environmental-friendconstruction construction decoration material of gained of the present invention, the content of formaldehyde in room is lower than 0.012mg/m after testing3, by detect the abrasion resistance index of this material more than 7200 turns, refractoriness reaches 780��830 DEG C, and coefficient of softing reaches 0.95��0.98.
The present invention is compared with additive method, and Advantageous Effects is:
(1) present invention makes full use of seeing stone waste material, it is achieved that resource, it is to avoid environmental pollution;
(2) water-fast fire-resistant, the indoor harmful substance of decomposable asymmetric choice net of the building and ornament materials of gained of the present invention, and wear-resisting.
Detailed description of the invention
Take seeing stone waste material and put in container, it is added thereto to water logging and does not have waste material 5��7cm, re-use agitator and be stirred 20��30min with rotating speed 200r/min, stand 5��8min subsequently, remove the impurity swimming in the water surface, then it is filtered, seeing stone waste material after collecting and impurity removing, puts in baking oven, dry at 100 DEG C, put it into again in pulverizer and pulverize, cross 150 mesh sieves; The seeing stone waste material granule of gained after above-mentioned sieving is put in calcining furnace, at 800��900 DEG C, after calcining 1��2h, seeing stone waste material after calcining is cooled to room temperature by the hydrogen using temperature to be 5 DEG C, is taken out by the seeing stone waste material after cooling subsequently, puts in ball mill, select stainless-steel grinding ball, grind 40��50min, cross 200 mesh sieves, obtain pretreated water spar waste granules; Take the pretreated water spar waste granules of the above-mentioned gained of 500��800g and put in the four-hole boiling flask taking into account reflux condensing tube with agitator, temperature, it is added thereto to 40��70g pearly-lustre fat acid, 50��70mL flavanonol and 20��30g Fatty acid methyl ester sodium sulfonate more respectively, after stirring, being added thereto to the alcoholic solution that 200��300mL mass fraction is 30%, it is 7.5��8.0 that the ammonia using mass fraction to be 25% regulates pH; Above-mentioned flask is moved in water-bath, is warming up to 70��80 DEG C, start agitator simultaneously and it is stirred, after insulation 1��2h, naturally cool to room temperature, be filtered subsequently, use dehydrated alcohol to put into after filter cake is rinsed 3��5 times in baking oven dry, obtain modified seeing stone waste material; Count by weight, take 45��50 parts of modified seeing stone waste materials, 4��8 parts of polyvinyl alcohol, 1��2 part of adipate ester, 20��25 parts of polyethylene, 5��7 parts of carboxymethyl celluloses and 13��20 water, put in mixer after mix homogeneously, mixture is put in stainless steel mould, again mould is put in heat pressing forming machines, design temperature is 195��220 DEG C, extruded, can obtain Environmental-friendconstruction construction decoration material.
Example 1
Take seeing stone waste material and put in container, it is added thereto to water logging and does not have waste material 5cm, re-use agitator and be stirred 20min with rotating speed 200r/min, stand 5min subsequently, remove the impurity swimming in the water surface, then it is filtered, seeing stone waste material after collecting and impurity removing, puts in baking oven, dry at 100 DEG C, put it into again in pulverizer and pulverize, cross 150 mesh sieves; The seeing stone waste material granule of gained after above-mentioned sieving is put in calcining furnace, at 800 DEG C, after calcining 1h, seeing stone waste material after calcining is cooled to room temperature by the hydrogen using temperature to be 5 DEG C, is taken out by the seeing stone waste material after cooling subsequently, puts in ball mill, select stainless-steel grinding ball, grind 40min, cross 200 mesh sieves, obtain pretreated water spar waste granules; Take the pretreated water spar waste granules of the above-mentioned gained of 500g and put in the four-hole boiling flask taking into account reflux condensing tube with agitator, temperature, it is added thereto to 40g pearly-lustre fat acid, 50mL flavanonol and 20g Fatty acid methyl ester sodium sulfonate more respectively, after stirring, being added thereto to the alcoholic solution that 200mL mass fraction is 30%, it is 7.5 that the ammonia using mass fraction to be 25% regulates pH; Above-mentioned flask is moved in water-bath, is warming up to 70 DEG C, start agitator simultaneously and it is stirred, after insulation 1h, naturally cool to room temperature, be filtered subsequently, use dehydrated alcohol to put into after filter cake is rinsed 3 times in baking oven dry, obtain modified seeing stone waste material; Count by weight, take 45 parts of modified seeing stone waste materials, 8 parts of polyvinyl alcohol, 2 parts of adipate esters, 25 parts of polyethylene, 7 parts of carboxymethyl celluloses and 13 water, put in mixer after mix homogeneously, mixture is put in stainless steel mould, again mould is put in heat pressing forming machines, design temperature is 195 DEG C, extruded, can obtain Environmental-friendconstruction construction decoration material.
Being used for decorating room by the Environmental-friendconstruction construction decoration material of gained of the present invention, the content of formaldehyde in room is 0.011mg/m3 after testing, by detect the abrasion resistance index of this material is 7250 turns, refractoriness reaches 780 DEG C, and coefficient of softing reaches 0.95.
Example 2
Take seeing stone waste material and put in container, it is added thereto to water logging and does not have waste material 7cm, re-use agitator and be stirred 30min with rotating speed 200r/min, stand 8min subsequently, remove the impurity swimming in the water surface, then it is filtered, seeing stone waste material after collecting and impurity removing, puts in baking oven, dry at 100 DEG C, put it into again in pulverizer and pulverize, cross 150 mesh sieves; The seeing stone waste material granule of gained after above-mentioned sieving is put in calcining furnace, at 900 DEG C, after calcining 2h, seeing stone waste material after calcining is cooled to room temperature by the hydrogen using temperature to be 5 DEG C, is taken out by the seeing stone waste material after cooling subsequently, puts in ball mill, select stainless-steel grinding ball, grind 50min, cross 200 mesh sieves, obtain pretreated water spar waste granules; Take the pretreated water spar waste granules of the above-mentioned gained of 800g and put in the four-hole boiling flask taking into account reflux condensing tube with agitator, temperature, it is added thereto to 70g pearly-lustre fat acid, 70mL flavanonol and 30g Fatty acid methyl ester sodium sulfonate more respectively, after stirring, being added thereto to the alcoholic solution that 300mL mass fraction is 30%, it is 8.0 that the ammonia using mass fraction to be 25% regulates pH; Above-mentioned flask is moved in water-bath, is warming up to 80 DEG C, start agitator simultaneously and it is stirred, after insulation 2h, naturally cool to room temperature, be filtered subsequently, use dehydrated alcohol to put into after filter cake is rinsed 5 times in baking oven dry, obtain modified seeing stone waste material; Count by weight, take 50 parts of modified seeing stone waste materials, 4 parts of polyvinyl alcohol, 1 part of adipate ester, 20 parts of polyethylene, 5 parts of carboxymethyl celluloses and 20 water, put in mixer after mix homogeneously, mixture is put in stainless steel mould, again mould is put in heat pressing forming machines, design temperature is 220 DEG C, extruded, can obtain Environmental-friendconstruction construction decoration material.
Being used for decorating room by the Environmental-friendconstruction construction decoration material of gained of the present invention, the content of formaldehyde in room is 0.007mg/m3 after testing, by detect the abrasion resistance index of this material is 7380 turns, refractoriness reaches 830 DEG C, and coefficient of softing reaches 0.96.
Example 3
Take seeing stone waste material and put in container, it is added thereto to water logging and does not have waste material 6cm, re-use agitator and be stirred 25min with rotating speed 200r/min, stand 6min subsequently, remove the impurity swimming in the water surface, then it is filtered, seeing stone waste material after collecting and impurity removing, puts in baking oven, dry at 100 DEG C, put it into again in pulverizer and pulverize, cross 150 mesh sieves; The seeing stone waste material granule of gained after above-mentioned sieving is put in calcining furnace, at 850 DEG C, after calcining 2h, seeing stone waste material after calcining is cooled to room temperature by the hydrogen using temperature to be 5 DEG C, is drawn off subsequently, puts in ball mill, select stainless-steel grinding ball, grind 45min, cross 200 mesh sieves, obtain pretreated water spar waste granules; Take the pretreated water spar waste granules of the above-mentioned gained of 700g and put in the four-hole boiling flask taking into account reflux condensing tube with agitator, temperature, it is added thereto to 60g pearly-lustre fat acid, 60mL flavanonol and 27g Fatty acid methyl ester sodium sulfonate more respectively, after stirring, being added thereto to the alcoholic solution that 250mL mass fraction is 30%, it is 8.0 that the ammonia using mass fraction to be 25% regulates pH; Above-mentioned flask is moved in water-bath, is warming up to 77 DEG C, start agitator simultaneously and it is stirred, after insulation 2h, naturally cool to room temperature, be filtered subsequently, use dehydrated alcohol to put into after filter cake is rinsed 4 times and baking oven is dried to constant weight, obtain modified seeing stone waste material; Count by weight, take 48 parts of modified seeing stone waste materials, 7 parts of polyvinyl alcohol, 2 parts of adipate esters, 24 parts of polyethylene, 7 parts of carboxymethyl celluloses and 13 water, put in mixer after mix homogeneously, mixture is put in stainless steel mould, again mould is put in heat pressing forming machines, design temperature is 210 DEG C, extruded, can obtain Environmental-friendconstruction construction decoration material.
Be used for decorating room by the Environmental-friendconstruction construction decoration material of gained of the present invention, after testing the content of formaldehyde 0.004mg/m3 in room, by detect the abrasion resistance index of this material is 7900 turns, refractoriness reaches 820 DEG C, and coefficient of softing reaches 0.98.
Claims (1)
1. one kind utilizes the method that seeing stone waste material prepares Environmental-friendconstruction construction decoration material, it is characterised in that concrete preparation process is:
(1) take seeing stone waste material and put in container, it is added thereto to water logging and does not have waste material 5��7cm, re-use agitator and be stirred 20��30min with rotating speed 200r/min, stand 5��8min subsequently, remove the impurity swimming in the water surface, then it is filtered, seeing stone waste material after collecting and impurity removing, puts in baking oven, dry at 100 DEG C, put it into again in pulverizer and pulverize, cross 150 mesh sieves;
(2) the seeing stone waste material granule of gained after above-mentioned sieving is put in calcining furnace, at 800��900 DEG C, after calcining 1��2h, seeing stone waste material after calcining is cooled to room temperature by the hydrogen using temperature to be 5 DEG C, is taken out by the seeing stone waste material after cooling subsequently, puts in ball mill, select stainless-steel grinding ball, grind 40��50min, cross 200 mesh sieves, obtain pretreated water spar waste granules;
(3) take the pretreated water spar waste granules of the above-mentioned gained of 500��800g and put in the four-hole boiling flask taking into account reflux condensing tube with agitator, temperature, it is added thereto to 40��70g pearly-lustre fat acid, 50��70mL flavanonol and 20��30g Fatty acid methyl ester sodium sulfonate more respectively, after stirring, being added thereto to the alcoholic solution that 200��300mL mass fraction is 30%, the ammonia using mass fraction to be 25% regulates pH to 7.5��8.0;
(4) above-mentioned flask is moved in water-bath, be warming up to 70��80 DEG C, start agitator simultaneously and it is stirred, after insulation 1��2h, naturally cool to room temperature, be filtered subsequently, use dehydrated alcohol to put into after filter cake is rinsed 3��5 times in baking oven dry, obtain modified seeing stone waste material;
(5) count by weight, take 45��50 parts of modified seeing stone waste materials, 4��8 parts of polyvinyl alcohol, 1��2 part of adipate ester, 20��25 parts of polyethylene, 5��7 parts of carboxymethyl celluloses and 13��20 water, put in mixer after mix homogeneously, mixture is put in stainless steel mould, again mould is put in heat pressing forming machines, design temperature is 195��220 DEG C, extruded, can obtain Environmental-friendconstruction construction decoration material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610075962.2A CN105621958A (en) | 2016-02-03 | 2016-02-03 | Method for preparing environment-friendly building decoration material by using rock crystal waste |
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| CN201610075962.2A CN105621958A (en) | 2016-02-03 | 2016-02-03 | Method for preparing environment-friendly building decoration material by using rock crystal waste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116274A (en) * | 2016-06-29 | 2016-11-16 | 合肥光聚财建筑装饰工程有限公司 | A kind of method that based crystal stone waste material prepares Environmental-friendconstruction construction decoration material |
| CN112876212A (en) * | 2021-03-15 | 2021-06-01 | 浙江寰龙环境科技有限公司 | Granite-imitated water permeable brick made of stone waste and preparation process thereof |
-
2016
- 2016-02-03 CN CN201610075962.2A patent/CN105621958A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116274A (en) * | 2016-06-29 | 2016-11-16 | 合肥光聚财建筑装饰工程有限公司 | A kind of method that based crystal stone waste material prepares Environmental-friendconstruction construction decoration material |
| CN112876212A (en) * | 2021-03-15 | 2021-06-01 | 浙江寰龙环境科技有限公司 | Granite-imitated water permeable brick made of stone waste and preparation process thereof |
| CN112876212B (en) * | 2021-03-15 | 2021-09-28 | 浙江寰龙环境科技有限公司 | Granite-imitated water permeable brick made of stone waste and preparation process thereof |
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Application publication date: 20160601 |