CN111003989A - Preparation method for preparing granite decorative plate by utilizing granite saw mud - Google Patents

Preparation method for preparing granite decorative plate by utilizing granite saw mud Download PDF

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Publication number
CN111003989A
CN111003989A CN201911064726.0A CN201911064726A CN111003989A CN 111003989 A CN111003989 A CN 111003989A CN 201911064726 A CN201911064726 A CN 201911064726A CN 111003989 A CN111003989 A CN 111003989A
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parts
granite
powder
preparing
base
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Inventor
董忠
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Sishui Huifeng Agricultural Development Engineering Co ltd
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Sishui Huifeng Agricultural Development Engineering Co ltd
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Priority to CN201911064726.0A priority Critical patent/CN111003989A/en
Publication of CN111003989A publication Critical patent/CN111003989A/en
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04Portland cements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/08Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B28B1/0873Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/52Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/52Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • B28B1/523Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing metal fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00612Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure

Abstract

The invention discloses a preparation method for preparing granite decorative plates by utilizing granite saw mud, which comprises surface material preparation, surface material forming, base material preparation, base material forming, composite material secondary forming and product maintenance, wherein the invention adopts machine-made fine sand and stone powder produced by processing granite solid wastes to replace quartz sand and quartz powder, and can effectively reduce the product cost on the basis of realizing the large application of the granite saw mud and eliminating the environmental influence; after the product is formed in one step, the product has no crack in appearance, structural deformation and excellent stability, and simultaneously has the advantages of high strength, high bending resistance, low water absorption, acid and alkali resistance, fire resistance, weather resistance and the like of the RPC composite material, all indexes of the product are superior to those of natural stone, and the service life of the product reaches more than 50 years.

Description

Preparation method for preparing granite decorative plate by utilizing granite saw mud
Technical Field
The invention relates to the technical field of plate preparation, in particular to a method for preparing a granite decorative plate by utilizing granite saw mud.
Background
In the cutting process of natural granite, about 5 percent of saw mud is generated, the saw mud contains coolant, suspending agent and other medicaments, and materials with the diameter less than or equal to 75 mu m account for more than 80 percent of the weight of the natural granite, so that the mature technology of the granite saw mud is not successfully applied at home, most of the saw mud is randomly poured, and the water body is seriously polluted; meanwhile, the sawn mud stone powder has certain cohesive force and repeatability, cannot be completely eliminated even when ploughed or applied with farmyard manure, if the sawn mud stone powder is mixed into soil, the soil can be quickly hardened, the air permeability, the soil moisture preservation performance and the internal structure of the soil can be damaged, the yield reduction of crops is obvious, and even if the sawn mud stone powder is mixed into the soil, the weeds cannot be grown, and finally the abandoned land can be caused; and the granite sawn mud is evaporated to form stone powder, wherein the inhalable particles of PM10 reach more than 10%, and the granite sawn mud is easy to fly with wind to form floating dust, so that haze is generated, air is seriously polluted, and the ecological environment is greatly influenced. With the gradual enhancement of the environmental protection policy, the large-scale application and treatment of the granite sawn mud become a key problem to be solved urgently.
Along with the gradual standardization of the stone industry in China and the increase of the environmental protection and ecological environment protection, the supply of natural granite decorative plate products also shows a trend of being less and less, and along with the improvement of the quality requirements of domestic buildings, more and more engineering parts are decorated by adopting granite. The contradiction between the supply and demand of the market of the natural granite plate is gradually prominent. The novel inorganic composite board prepared from the granite powder has the appearance effect of natural granite, the compressive strength and the weather resistance are superior to those of the natural granite, and the novel inorganic composite board which overcomes the defects of low breaking strength and high specific gravity of the natural granite is an optimal substitute product for replacing the natural granite board and an optimal way for eliminating the environmental pollution of saw mud. Although granite powder has the structural strength advantage incomparable with natural stone, the granite powder is difficult to be applied in the decorative engineering field in a large range, and the processing technology is complex and the maintenance condition is harsh, so the processing cost is high, and the application field is limited.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a preparation method for preparing a granite decorative plate by utilizing granite saw mud comprises the following steps:
(1) preparing a surface material: the surface layer material comprises the following materials in parts by mass: 90-110 parts of PO42.5 white/common Portland cement, 50-130 parts of granite washing fine sand, 10-30 parts of granite powder, 2-5 parts of Fe3O4 magnetite powder, 1-3 parts of aluminum silicate and 0.5-10 parts of inorganic oxidation pigment;
(2) forming a surface material: selecting a surface layer material according to the proportion in the step (1), fully mixing the materials, adding clear water accounting for 20-30% of the weight of PO42.5 white/common portland cement, fully mixing the materials into thick paste, pouring the paste into a mold for paving, wherein the average paving thickness is not more than 3mm, vibrating by using a double-vibration exciter platform after paving for not less than 60 seconds, and then placing the paste in a constant temperature chamber at 45 ℃ for primary curing for 15 minutes;
(3) preparing a base material: the base layer material comprises the following materials in parts by mass: 90-110 parts of PO42.5 ordinary portland cement, 20-30 parts of ferroalloy silica fume, 6-8 parts of vitrified micro bubbles, 0.05-0.2 part of carbon fiber, 1.5-4.5 parts of copper-plated steel fiber, 120 parts of granite fine washed sand 110-sand, 25-37 parts of granite stone powder, 2-3 parts of polycarboxylic acid water reducing agent and 0.3-1.0 part of defoaming agent;
(4) forming a base material: selecting a base material according to the proportion in the step (3), mixing PO42.5 ordinary portland cement, iron alloy silica fume, vitrified micro bubbles and granite stone powder in the material according to weight, and then stirring in a closed stirrer for not less than 3 min; then adding the loosened carbon fiber, copper-plated steel fiber and granite water-washed fine sand, and blending for not less than 2 min; then adding clean water, a polycarboxylic acid water reducing agent and a defoaming agent into a container in advance, wherein the water-to-gel ratio is 0.22, fully mixing, adding into the uniformly dry-mixed material, and finally mixing at a high speed for not less than 4.5min to form a high-viscosity mixture;
(5) secondary molding of the composite material: injecting the mixture prepared in the step (4) into a mold with the leveling of the surface layer material; then the mould is sent to a double-amplitude high-frequency excitation platform to be vibrated for 2min to form a high-density composite board substrate;
(6) and (3) product maintenance: conveying the product formed by vibration in the step (5) and the die into a 45-degree constant-temperature primary curing chamber for curing for 22 hours, and transferring into an 85-degree constant-temperature steam curing chamber for steam curing for 48 hours after primary curing is finished; after the steam curing is finished, the belt member is placed in a normal temperature state to be naturally cooled to the room temperature, and then the belt member can be demoulded, packed and delivered out of the factory.
Preferably, the surface material component consists of the following materials in parts by mass: 100 parts of PO42.5 white/common Portland cement, 90 parts of granite washed fine sand, 20 parts of granite powder, 3 parts of Fe3O4 magnetite powder, 1.5 parts of aluminum silicate and 5 parts of inorganic oxidation pigment.
Preferably, the base material component consists of the following materials in parts by mass: 100 parts of PO42.5 ordinary portland cement, 25 parts of ferroalloy silica fume, 7.5 parts of vitrified micro bubbles, 0.1 part of carbon fiber, 3 parts of copper-plated steel fiber, 115 parts of granite washed fine sand, 32 parts of granite stone powder, 2.5 parts of polycarboxylic acid water reducing agent and 0.6 part of defoaming agent.
Preferably, the surface material comprises 40-120 meshes of granite fine sand washed by water, 200 meshes of granite stone powder, 200 meshes of Fe3O4 magnetite powder, 200 meshes of aluminum silicate and 200 meshes of inorganic oxidation pigment.
Preferably, in the base material, the vitrified micro bubbles are 150 meshes, the granite fine sand washed by water is 18-120 meshes, and the granite powder is 200-350 meshes.
Preferably, the inorganic oxidation pigment in the surface material component is a non-organic pigment, and comprises iron oxide red, chromium oxide green, iron oxide yellow and titanium dioxide.
The invention is an ultrahigh-strength powder concrete-based decorative plate which is prepared by using the existing RPC reactive powder concrete as a base material and through multiple processes of reducing specific gravity, adding reinforcing fibers, compounding a decorative surface layer and the like; the product uses granite sawn mud stone powder as a main raw material to replace quartz sand and quartz powder in RPC powder concrete, so that the activation of silica powder of active powder concrete is met, the massive industrial application of massive sawn mud stone powder is realized, and the production and manufacturing cost is greatly reduced. And then adding light particles such as vitrified micro bubbles and the like, effectively reducing the volume weight of the material, so that the composite material has various index performances of RPC and also has the advantage of light weight with dry volume weight less than 2200kg/m 3.
The invention adopts the die pressing composite forming processing technology, so that the surface of the component has the crystal appearance effect similar to the effect of natural granite, and the decoration effect after coarse grinding with natural stone can be achieved without grinding. The composite material has the obvious advantages of high strength, high weather resistance and the like of the RPC concrete, when the thickness of the RPC imitation granite board manufactured by the invention is 15mm, the flexural strength of the RPC imitation granite board is equal to the flexural strength of the natural granite with the thickness of 28mm, and if the RPC imitation granite board is applied to the field of high-rise building outer wall decoration, the weight of the decoration board is reduced to about 1/5, the structural load is greatly reduced, and the cost of a main structure is reduced.
The invention can not only produce high-finish composite decorative plate, but also use the mould to pre-set the texture of the fire board, and form the fire board type stone-imitating decorative plate and other products in one step. When this product thickness reached 50mm, the 600 of preparation was 600 × 600 square brick, can bear 20T car completely and go and do not have any damage, consequently, this material can also the wide application in the high-end square terrace field that requires decorative effect and pressure-bearing effect and weight again.
In addition, the invention also has the following advantages:
1. machine-made fine sand and stone powder produced by processing granite solid waste are adopted to replace quartz sand and quartz powder, so that the product cost can be effectively reduced on the basis of realizing the large application of granite sawn mud and eliminating the environmental influence;
2. the vitrified micro bubbles are adopted to replace fly ash, so that the dry density of the base material of the composite material is far lower than the density of an RPC product added by the traditional fly ash;
3. in the aspect of reinforcing fiber selection, carbon fibers with better performance are adopted to replace part of copper-plated steel fibers, so that the base layer structure is more stable, and the breaking strength is greatly improved;
4. the processing technology of laying the decorative surface layer in advance is adopted, so that the surface of the product has a granite decorative effect;
5. the product is maintained in double thermostatic chambers, so that the product maintenance process is more reasonable, and the product quality is more stable;
6. the double-amplitude high-frequency excitation platform vibrates, so that the granite imitation product is molded more compactly and the molding time is shorter;
7. the decorative effect of various granite textures can be configured by adopting different kinds of granite powder and fine sand, so that the requirements of different fields are met;
8. the product can obtain the rough and smooth finish of natural granite after one-step forming, has the appearance effect of natural stone, has no crack in appearance, structural deformation and excellent stability, also has the advantages of high strength, high bending resistance, low water absorption, acid and alkali resistance, fire resistance, weather resistance and the like of the RPC composite material, has various indexes superior to those of the natural stone, and has the service life of more than 50 years.
Detailed Description
A preparation method for preparing a granite decorative plate by utilizing granite saw mud comprises the following steps:
(1) preparing a surface material: the surface layer material comprises the following materials in parts by mass: 90-110 parts of PO42.5 white/common Portland cement, 50-130 parts of granite washing fine sand, 10-30 parts of granite powder, 2-5 parts of Fe3O4 magnetite powder, 1-3 parts of aluminum silicate and 0.5-10 parts of inorganic oxidation pigment;
(2) forming a surface material: selecting a surface layer material according to the proportion in the step (1), fully mixing the materials, adding clear water accounting for 20-30% of the weight of PO42.5 white/common portland cement, fully mixing the materials into thick paste, pouring the paste into a mold for paving, wherein the average paving thickness is not more than 3mm, vibrating by using a double-vibration exciter platform after paving for not less than 60 seconds, and then placing the paste in a constant temperature chamber at 45 ℃ for primary curing for 15 minutes;
(3) preparing a base material: the base layer material comprises the following materials in parts by mass: 90-110 parts of PO42.5 ordinary portland cement, 20-30 parts of ferroalloy silica fume, 6-8 parts of vitrified micro bubbles, 0.05-0.2 part of carbon fiber, 1.5-4.5 parts of copper-plated steel fiber, 120 parts of granite fine washed sand 110-sand, 25-37 parts of granite stone powder, 2-3 parts of polycarboxylic acid water reducing agent and 0.3-1.0 part of defoaming agent;
(4) forming a base material: selecting a base material according to the proportion in the step (3), mixing PO42.5 ordinary portland cement, iron alloy silica fume, vitrified micro bubbles and granite stone powder in the material according to weight, and then stirring in a closed stirrer for not less than 3 min; then adding the loosened carbon fiber, copper-plated steel fiber and granite water-washed fine sand, and blending for not less than 2 min; then adding clean water, a polycarboxylic acid water reducing agent and a defoaming agent into a container in advance, wherein the water-to-gel ratio is 0.22, fully mixing, adding into the uniformly dry-mixed material, and finally mixing at a high speed for not less than 4.5min to form a high-viscosity mixture;
(5) secondary molding of the composite material: injecting the mixture prepared in the step (4) into a mold with the leveling of the surface layer material; then the mould is sent to a double-amplitude high-frequency excitation platform to be vibrated for 2min to form a high-density composite board substrate;
(6) and (3) product maintenance: conveying the product formed by vibration in the step (5) and the die into a 45-degree constant-temperature primary curing chamber for curing for 22 hours, and transferring into an 85-degree constant-temperature steam curing chamber for steam curing for 48 hours after primary curing is finished; after the steam curing is finished, the belt member is placed in a normal temperature state to be naturally cooled to the room temperature, and then the belt member can be demoulded, packed and delivered out of the factory.
As a preferred embodiment of this example, the surface material comprises 40-120 mesh granite fine sand, 200 mesh granite powder, 200 mesh Fe3O4 magnetite powder, 200 mesh aluminum silicate, and 200 mesh inorganic oxide pigment.
As a preferred embodiment of this example, in the base material, the vitrified micro bubbles are 150 meshes, the granite fine sand washed by water is 18-120 meshes, and the granite powder is 200-350 meshes.
In a preferred embodiment of this embodiment, the inorganic pigment in the surface material component is a non-organic pigment, and includes red iron oxide, green chromium oxide, yellow iron oxide, and titanium dioxide.
Example one
Preparing the rusty granite imitation composite rough-ground plate:
100 parts of PO42.5 white cement, 130 parts of machine-made fine sand (40-120 meshes) for processing rusty stone waste granite, 20 parts of granite (rusty stone) stone powder (200 meshes), 5 parts of Fe3O4 magnetite powder (200 meshes), 1 part of aluminum silicate (200 meshes) and 1.4 parts of iron oxide yellow (200 meshes) are taken, and 25 parts of water is added and fully mixed to obtain the rusty stone surface material.
Placing the surface material into a high-finish plastic mould, vibrating for 65 seconds by a double-vibration-frequency high-frequency vibration platform, and placing the plastic mould into a 45-degree pre-curing chamber for pre-curing for 15 minutes;
during the pre-curing period, 100 parts of PO Portland cement, 25 parts of ferroalloy silica fume, 6 parts of vitrified micro bubbles, 0.1 part of carbon fiber after the release, 3 parts of copper-plated steel fiber, 110 parts of granite washing fine sand (18-120 meshes), 25 parts of granite stone powder (200 meshes and 350 meshes), 2.8 parts of water reducing agent, 0.3 part of defoaming agent and 27 parts of water are mixed according to the weight and then enter a closed stirrer to be mixed for not less than 3 min; then adding the loosened carbon fiber, copper-plated steel fiber and granite water-washed fine sand, and blending for not less than 2min again; then putting the clean water, the polycarboxylic acid water reducing agent and the defoaming agent into a container in advance, wherein the water-to-gel ratio is 0.22, fully mixing, adding the mixture into the uniformly dry-mixed material, and finally mixing at a high speed for not less than 4.5min to form a high-viscosity mixture;
injecting the high-viscosity mixed base material into a pre-cured mold with a surface material, and vibrating for 2min through a double-amplitude high-frequency vibration platform to form a high-density composite board base material;
placing the formed plate into a 45-degree constant-temperature chamber for curing for 22 hours, and after primary curing is finished, transferring the formed plate into an 85-degree constant-temperature steam curing chamber for steam curing for 48 hours; after the steam curing is finished, the belt member is placed in a normal temperature state to be naturally cooled to the room temperature, and then the belt member can be demoulded, packaged and delivered out of the factory.
The product has the compressive strength of 90MPa, the breaking strength of 18MPa, the elastic modulus of 40GPa, the freezing and thawing times of more than or equal to 150 times and the water absorption rate of less than or equal to 3 percent. The surface finish is similar to that of a coarse ground natural plate, no obvious difference is observed between the surface finish and the natural rusty stone plate outside 5 meters, and the color and luster of the plate are consistent.
Example two
Preparing a simulated Lu grey granite composite fire-fired plate:
taking 80 parts of PO silicate white cement, 20 parts of PO silicate common cement, 130 parts of machine-made fine sand (40-120 meshes) for processing granite (waste Lu grey stone), 20 parts of Lu grey granite powder (200 meshes), 5 parts of Fe3O4 magnetite powder (200 meshes), 1.4 parts of aluminum silicate (200 meshes) and 4 parts of iron oxide black (200 meshes), and adding 25 parts of water to fully mix to obtain Lu grey surface layer materials;
fully stirring the materials into thick paste, pouring the paste into a mould for paving, wherein the average paving thickness is not more than 3mm, vibrating by using a double-vibration exciter platform after paving for not less than 60 seconds, and then placing the paste in a constant temperature chamber at 45 ℃ for primary curing for 15 minutes;
during the pre-curing period, 100 parts of PO Portland cement, 25 parts of ferroalloy silica fume, 7.5 parts of vitrified micro bubbles, 0.1 part of carbon fiber after the release, 3 parts of copper-plated steel fiber, 110 parts of granite washing fine sand (18-120 meshes), 30 parts of granite stone powder (200-350 meshes), 3 parts of water reducing agent, 03 parts of defoaming agent and 22.5 parts of water are mixed according to the weight and then enter a closed stirrer to be mixed for not less than 3 min; then adding the loosened carbon fiber, copper-plated steel fiber and granite water-washed fine sand, and blending for not less than 2 min; then adding clean water, a polycarboxylic acid water reducing agent and a defoaming agent into a container in advance, wherein the water-to-gel ratio is 0.22, fully mixing, adding into the uniformly dry-mixed material, and finally mixing at a high speed for not less than 4.5min to form a high-viscosity mixture;
then injecting the mixture into a mold with a surface material which is pre-cured, and vibrating the mixture through a double-amplitude high-frequency excitation platform to form a high-density composite board substrate;
placing the formed plate into a 45-degree constant-temperature chamber for curing for 22 hours, and after primary curing is finished, transferring the formed plate into an 85-degree constant-temperature steam curing chamber for steam curing for 48 hours; after the steam curing is finished, the belt member is placed in a normal temperature state to be naturally cooled to the room temperature, and then the belt member can be demoulded, packaged and delivered out of the factory.
The product has the compressive strength of 80MPa, the breaking strength of 20MPa, the elastic modulus of 40GPa, the freezing and thawing times of more than or equal to 100 times and the water absorption rate of less than or equal to 3 percent. The surface fire texture is clear, no obvious difference is observed with a natural Lu ash plate outside 10 meters, and the plate color is consistent.
The present invention and the embodiments thereof have been described above without limitation, and it is within the scope of the present invention that those skilled in the art should be able to devise similar structural modes and embodiments without inventive changes without departing from the spirit and scope of the present invention.

Claims (6)

1. A preparation method for preparing a granite decorative plate by using granite saw mud is characterized by comprising the following steps:
(1) preparing a surface material: the surface layer material comprises the following materials in parts by mass: 90-110 parts of PO42.5 white/common Portland cement, 50-130 parts of granite washing fine sand, 10-30 parts of granite powder, 2-5 parts of Fe3O4 magnetite powder, 1-3 parts of aluminum silicate and 0.5-10 parts of inorganic oxidation pigment;
(2) forming a surface material: selecting a surface layer material according to the proportion in the step (1), fully mixing the materials, adding clear water accounting for 20-30% of the weight of PO42.5 white/common portland cement, fully stirring the materials into thick paste, pouring the paste into a mold for paving, wherein the average paving thickness is not more than 3mm, vibrating by using a double-vibration exciter platform after paving for not less than 60 seconds, and then placing the paste in a constant temperature chamber at 45 ℃ for primary curing for 15 minutes;
(3) preparing a base material: the base layer material comprises the following materials in parts by mass: 90-110 parts of PO42.5 ordinary portland cement, 20-30 parts of ferroalloy silica fume, 6-8 parts of vitrified micro bubbles, 0.05-0.2 part of carbon fiber, 1.5-4.5 parts of copper-plated steel fiber, 110-120 parts of granite fine washed sand, 25-37 parts of granite stone powder, 2-3 parts of polycarboxylic acid water reducing agent and 0.3-1.0 part of defoaming agent;
(4) forming a base material: selecting a base material according to the proportion in the step (3), mixing PO42.5 ordinary portland cement, ferroalloy silica fume, vitrified micro-beads and granite stone powder in the material according to weight, and then stirring in a closed stirrer for not less than 3 min; then adding the loosened carbon fiber, copper-plated steel fiber and granite water-washed fine sand, and blending for not less than 2 min; then adding clean water, a polycarboxylic acid water reducing agent and a defoaming agent into a container in advance, wherein the water-to-gel ratio is 0.22, fully stirring, adding the mixture into the uniformly dry-stirred mixed material, and finally stirring at a high speed for not less than 4.5min to form a high-viscosity mixture;
(5) secondary molding of the composite material: injecting the mixture prepared in the step (4) into a mold with the leveling of the surface layer material; then the mould is sent to a double-amplitude high-frequency excitation platform to be vibrated for 2min to form a high-density composite board substrate;
(6) and (3) product maintenance: conveying the product formed by vibration in the step (5) and the die into a 45-degree constant-temperature primary curing chamber for curing for 22 hours, and transferring the product into an 85-degree constant-temperature steam curing chamber for steam curing for 48 hours after primary curing is finished; after the steam curing is finished, the belt member is placed in a normal temperature state to be naturally cooled to the room temperature, and then the belt member can be demoulded, packed and delivered out of the factory.
2. The method for preparing the granite decorative plate from the granite saw mud as claimed in claim 1, wherein the surface material comprises the following materials in parts by mass: 100 parts of PO42.5 white/common Portland cement, 90 parts of granite washed fine sand, 20 parts of granite powder, 3 parts of Fe3O4 magnetite powder, 1.5 parts of aluminum silicate and 5 parts of inorganic oxidation pigment.
3. The method for preparing a granite decorative plate from granite saw mud as claimed in claim 1, wherein the base material consists of the following materials in parts by mass: 100 parts of PO42.5 ordinary portland cement, 25 parts of ferroalloy silica fume, 7.5 parts of vitrified micro bubbles, 0.1 part of carbon fiber, 3 parts of copper-plated steel fiber, 115 parts of granite washed fine sand, 32 parts of granite stone powder, 2.5 parts of polycarboxylic acid water reducing agent and 0.6 part of defoaming agent.
4. The method of claim 1, wherein the surface layer material comprises 40-120 mesh granite powder, 200 mesh Fe3O4 magnetite powder, 200 mesh aluminum silicate, and 200 mesh inorganic oxide pigment.
5. The method as claimed in claim 1, wherein the vitrified micro bubbles in the base material are 150 meshes, the fine sand of granite washed by water is 18-120 meshes, and the granite powder is 200-350 meshes.
6. The method for preparing a granite decorative plate using granite saw dust as claimed in claim 1, wherein the inorganic pigment in the surface material component is a non-organic pigment including red iron oxide, green chromium oxide, yellow iron oxide, titanium dioxide.
CN201911064726.0A 2019-11-02 2019-11-02 Preparation method for preparing granite decorative plate by utilizing granite saw mud Pending CN111003989A (en)

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Publication number Priority date Publication date Assignee Title
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