阅读说明：本技术 锯泥砂浆及其制备方法和应用 (Saw mud mortar and preparation method and application thereof ) 是由 王继亮 刘冬 高家顺 于 2021-09-03 设计创作，主要内容包括：本发明属于锯泥再利用技术领域,具体的涉及一种锯泥砂浆及其制备方法和应用。所述的锯泥砂浆,以重量份数计,由以下原料组成：锯泥760-800份、乳液90-120份、S95级矿粉80-110份、色粉5-12份、聚丙烯短纤维5-8份、纤维素0.5-2份、硅酸3-7份、分散剂1-3份、消泡剂1-3份。本发明所述的锯泥砂浆,以大量的锯泥石粉废弃物为原料,利用锯泥石粉生产饰面材料不仅从根本上解决石材锯泥污染环境、浪费资源的行业性共性难题,同时有效降低生产成本,产品附加值高。(The invention belongs to the technical field of saw mud recycling, and particularly relates to saw mud mortar and a preparation method and application thereof. The saw mud mortar is prepared from the following raw materials in parts by weight: 800 parts of saw mud 760-containing material, 90-120 parts of emulsion, 80-110 parts of S95-grade mineral powder, 5-12 parts of toner, 5-8 parts of polypropylene short fiber, 0.5-2 parts of cellulose, 3-7 parts of silicic acid, 1-3 parts of dispersing agent and 1-3 parts of defoaming agent. The saw mud mortar disclosed by the invention takes a large amount of saw mud stone powder waste as a raw material, and the saw mud stone powder is used for producing the facing material, so that the industrial common problems that stone saw mud pollutes the environment and wastes resources are fundamentally solved, meanwhile, the production cost is effectively reduced, and the added value of the product is high.)

1. the saw mud mortar is characterized in that: the composite material consists of the following raw materials in parts by weight:

2. the saw mud mortar of claim 1, wherein: the water content of the saw mud is 10-15%, and the granularity is 100-400 meshes; the composite material comprises the following chemical components in percentage by mass: SiO 2₂70-74% of Al₂O₃The content of (A) is 13% -15%, Na₂The content of O is 3-4.5%, K₂The content of O is 3 to 4.5 percent, the content of CaO is 0.5 to 1.5 percent, and the content of MgO is 0.03 to 0.06 percent;

the emulsion is one or a mixture of pure acrylic, styrene-acrylic or silicone-acrylic emulsion;

the specific surface area of the S95 grade mineral powder is 510m²Kg, fluidity ratio 108%, particle size 300 mesh, activity index 86% (7 days).

3. The saw mud mortar of claim 1, wherein: the toner is one or a mixture of more of ferric oxide, titanium dioxide, dichromium trioxide, ferrous iron cyanate or barium manganate toner;

the length of the polypropylene short fiber is 3-6mm, and the density is 0.90-0.92g/cm³；

The cellulose is one or a mixture of two of hydroxyethyl cellulose or hydroxypropyl methyl cellulose;

the dispersant is one or a mixture of more of ammonium polymethacrylate, methylcellulose, ammonium citrate, polyethylene glycol or triethanolamine.

4. A method for preparing the saw mud mortar of claim 1, which is characterized in that: the method comprises the following steps:

(1) adding the emulsion into a dispersant pulling cylinder, controlling the rotating speed to be 1000-1200r/min, and then sequentially adding cellulose, toner, a dispersant, silicic acid and polypropylene short fibers for dispersing for 50-90 minutes to prepare a dispersion liquid;

(2) and (2) adding S95-grade mineral powder into the dispersion liquid prepared in the step (1), stirring for 10-30 minutes at the rotating speed of 2000-min-.

5. Use of a saw mud mortar according to claim 1, characterized in that: the method is used for preparing soft porcelain and comprises the following steps:

(1) paving the silicon rubber soft porcelain mold on a Teflon drying line, and spraying saw mud mortar;

(2) then placing the mixture on a chain plate drying line for drying;

(3) and finally, cooling the silicon rubber soft porcelain mold by adopting a cooling fan to separate the silicon rubber soft porcelain mold from the solidified saw mud mortar, and preparing to obtain a soft porcelain product.

6. Use of a saw mud mortar according to claim 5, wherein: the thickness of the spraying saw mud mortar in the step (1) is controlled to be 3-4 mm;

the drying temperature in the step (2) is 85-100 ℃, and the time is 80-120 min.

7. Use of a saw mud mortar according to claim 1, characterized in that: the method for preparing the flexible stone material comprises the following steps:

(1) laying a silicon rubber mold on a Teflon drying line, and spraying saw mud mortar;

(2) composite glass fiber mesh cloth;

(3) drying on a chain plate drying line;

(4) spraying stone-like paint, laying an isolating film on the stone-like paint, profiling by using a die embossing machine containing different textures, removing the isolating film, and then demolding;

(5) drying at 85-105 deg.C for 60-80 min;

(6) and cutting into different lengths by a splitting machine to prepare the flexible stone.

8. Use of a saw mud mortar according to claim 7, wherein:

the thickness of the spraying saw mud mortar in the step (1) is controlled to be 1-2 mm;

the size of the glass fiber mesh cloth in the step (2) is 4 x 1250 mm;

the drying temperature in the step (3) is 60-90 ℃ and the time is 10-30 min.

9. Use of a saw mud mortar according to claim 7, wherein:

independently spraying three to six colors in the step (4);

the specification of the die in the step (4) is 1250 × 600 × 10mm, and the compression pressure is 0.01-0.1 MPa.

Technical Field

The invention belongs to the technical field of saw mud recycling, and particularly relates to saw mud mortar and a preparation method and application thereof.

Background

The stone resources in China are mainly marble and granite, and are mainly concentrated in Shandong, Zhejiang, Fujian and the like. The sunshine city in Shandong province has abundant stone resources, and the stone processing industry becomes an important economic prop industry. However, in the process of stone mining and production, a large amount of scraps, saw dust, abrasive dust, saw mud and other waste materials are generated, so that the ecological environment is seriously polluted, and a large amount of land resources are wasted. According to preliminary statistics, only in a sunshine city, after years of accumulation, the stone waste residues and saw mud reach thousands of tons and occupy thousands of acres, the sustainable development of the stone industry and the whole economy are seriously influenced, and the resource advantages of stone resources in counties are difficult to exert. How to treat and reasonably utilize the stone sawing mud becomes a great problem to be solved urgently by stone processing enterprises and local governments.

The traditional saw mud treatment method comprises the steps of processing and manufacturing roadside stones, air-added bricks and the like, the added value of the products is low, and the enthusiasm of stone enterprises is low. Through detection and analysis, the components of the saw dust are very similar to those of the ceramic slurry, and the main components of the saw dust comprise feldspar, quartz, biotite, saw blade abrasion mechanical iron in the processing process and the like. If the ceramic is processed into soft porcelain or flexible stone, the solid waste saw mud generated by stone factories can be efficiently removed, waste is turned into wealth, and the ceramic is low in production cost, high in additional value and large in market prospect. The existing soft porcelain product is a flexible architectural decoration surface material which is mainly made of modified soil as a main raw material and is formed by molding, baking and radiation crosslinking through a special temperature control molding system. The flexible stone is a novel decorative material which is made of cement, colored sand, high molecular polymer, an auxiliary agent and the like serving as main raw materials, composite alkali-resistant fibers serving as a reinforcing layer and has the texture and the grains of natural stone and certain flexibility through a certain production process. The two facing materials have the excellent characteristics of safety, environmental protection, shock resistance, crack prevention, fire resistance, freezing prevention, water resistance, air permeability, acid resistance, alkali resistance and the like, but the problems of high production cost, low yield and uneven product performance generally exist in the existing preparation process, so that the process for exploring a novel new material taking the saw mud as the raw material is urgently needed.

Disclosure of Invention

The purpose of the invention is: provides saw mud mortar and a preparation method thereof. The saw mud mortar is used for producing building facing materials by using saw mud stone powder, fundamentally solves the industrial common problems that stone saw mud pollutes the environment and wastes resources, and realizes large-scale consumption, harmless treatment and resource utilization of the saw mud; the invention also provides a preparation method and application thereof.

The saw mud mortar disclosed by the invention comprises the following raw materials in parts by weight:

wherein:

preferably, the saw mud mortar disclosed by the invention comprises the following raw materials in parts by weight:

the water content of the saw mud is 10-15%, and the granularity is 100-400 meshes; the composite material comprises the following chemical components in percentage by mass: SiO 2₂70-74% of Al₂O₃The content of (A) is 13% -15%, Na₂The content of O is 3-4.5%, K₂The content of O is 3 to 4.5 percent, the content of CaO is 0.5 to 1.5 percent, and the content of MgO is 0.03 to 0.06 percent.

The emulsion is one or a mixture of pure acrylic, styrene-acrylic or silicone-acrylic emulsion.

The specific surface area of the S95 grade mineral powder is 510m²Kg, fluidity ratio 108%, particle size 300 mesh, activity index 86% (7 days).

The toner is one or a mixture of more of ferric oxide, titanium dioxide, dichromium trioxide, ferrous iron cyanate or barium manganate toner.

The length of the polypropylene short fiber is 3-6mm, and the density is 0.90-0.92g/cm³。

The cellulose is one or a mixture of two of hydroxyethyl cellulose or hydroxypropyl methyl cellulose.

The dispersant is one or a mixture of more of ammonium polymethacrylate, methylcellulose, ammonium citrate, polyethylene glycol or triethanolamine.

The defoaming agent is a nonionic aqueous emulsion defoaming agent.

The saw mud mortar provided by the invention has the advantages that the components play respective roles in obtaining the saw mud mortar with excellent performance, and the dispersant is added, so that the slurry mixing time is effectively shortened, and the slurry is ensured to be fully and uniformly mixed.

The preparation method of the saw mud mortar comprises the following steps:

(1) adding the emulsion into a coating dispersion cylinder, controlling the rotating speed to be 1000-1200r/min, and then sequentially adding cellulose, toner, a dispersing agent, silicic acid and polypropylene short fibers for dispersing for 50-90 minutes to prepare a dispersion liquid;

(2) and (2) adding S95-grade mineral powder into the dispersion liquid prepared in the step (1), stirring for 10-30 minutes at the rotating speed of 2000-min-.

The application of the saw mud mortar provided by the invention in preparation of soft porcelain comprises the following steps:

(1) paving the silicon rubber soft porcelain mold on a Teflon drying line, and spraying saw mud mortar;

(2) then placing the mixture on a chain plate drying line for drying;

(3) and finally, cooling the silicon rubber soft porcelain mold by adopting a cooling fan to separate the silicon rubber soft porcelain mold from the solidified saw mud mortar, and preparing to obtain a soft porcelain product.

Wherein:

the thickness of the spraying saw mud mortar in the step (1) is controlled to be 3-4 mm.

The drying temperature in the step (2) is 85-100 ℃, and the time is 80-120 min.

The application of the saw mud mortar provided by the invention in preparation of flexible stone comprises the following steps:

(1) laying a silicon rubber mold on a Teflon drying line, and spraying saw mud mortar;

(2) composite glass fiber mesh cloth;

(3) drying on a chain plate drying line;

(4) spraying stone-like paint, laying an isolating film on the stone-like paint, profiling by using a die embossing machine containing different textures, removing the isolating film, and then demolding;

(5) drying at 85-105 deg.C for 60-80 min;

(6) and cutting into different lengths by a splitting machine to prepare the flexible stone.

Wherein:

the thickness of the spraying saw mud mortar in the step (1) is controlled to be 1-2 mm.

The size of the glass fiber mesh cloth in the step (2) is 4 x 1250 mm.

The drying temperature in the step (3) is 60-90 ℃ and the time is 10-30 min.

Independently spraying three to six colors in the step (4).

The specification of the die in the step (4) is 1250 × 600 × 10mm, and the compression pressure is 0.01-0.1 MPa.

Compared with the prior art, the invention has the following beneficial effects:

(1) the saw mud mortar disclosed by the invention takes a large amount of saw mud stone powder waste (> 70%) as a raw material, and the saw mud stone powder is used for producing the facing material, so that the industrial common problems that stone saw mud pollutes the environment and wastes resources are fundamentally solved, the production cost is effectively reduced, and the obtained product has high added value.

(2) The saw mud mortar disclosed by the invention is prepared by compounding saw mud wastes and other raw materials, and when the saw mud mortar is used for preparing soft porcelain or flexible stone, the raw materials are cheap and easy to obtain, so that large-scale consumption, harmless treatment and resource utilization of saw mud are realized.

(3) The preparation method of the saw mud mortar has simple process and easily controlled parameters.

(4) The application of the saw mud mortar disclosed by the invention is used for preparing soft porcelain and flexible stone, the cost is saved, the saw mud utilization rate is high, the market demand is large, a brand new road is explored for the saw mud treatment of local stone enterprises, the direction is provided for the industrial transformation of stone processing enterprises, and the additional value of products is improved.

(5) The saw mud mortar disclosed by the invention is used for preparing soft porcelain, so that the production cost of the soft porcelain is reduced, and the saw mud mortar has the characteristics of low water absorption rate, good tensile strength and difficulty in fracture.

Detailed Description

The present invention is further described below with reference to examples.

Example 1

The saw mud mortar described in the embodiment 1 is composed of the following raw materials in parts by weight:

the water content of the saw mud is 12%, and the granularity is 300 meshes; the composite material comprises the following chemical components in percentage by mass: SiO 2₂Content of (C) 72% Al₂O₃Content of (3%) Na₂The content of O is 4.5%, K₂The contents of O, CaO and MgO were 4%, 0.8% and 0.05%, respectively.

The emulsion is a mixture of pure acrylic emulsion and styrene-acrylic emulsion.

The specific surface area of the S95 grade mineral powder is 510m²Kg, fluidity ratio 108%, particle size 300 mesh, activity index 86% (7 days).

The toner is ferric oxide toner.

The polypropylene short fiber has the length of 5mm and the density of 0.92g/cm³。

The cellulose is hydroxyethyl cellulose.

The dispersing agent is a mixture of ammonium polymethacrylate and methylcellulose.

The defoaming agent is HR polyether defoaming agent.

The preparation method of the saw mud mortar in the embodiment 1 comprises the following steps:

(1) adding the emulsion into a paint dispersing cylinder, controlling the rotating speed to be 1200r/min, and then sequentially adding cellulose, toner, a dispersing agent, silicic acid and polypropylene short fibers for dispersing for 60 minutes to prepare a dispersion liquid;

(2) and (2) adding S95-grade mineral powder into the dispersion liquid prepared in the step (1), stirring for 20 minutes at the rotating speed of 1500r/min, then adding the saw mud and the defoaming agent, stirring for 15 minutes at the rotating speed of 700r/min, and preparing the saw mud mortar.

The saw mud mortar prepared in the step (2) has high bonding strength, the breaking load of the bonding mortar reaches 2.3kN, the tensile strength reaches 1.50MPa (the national standard value is 0.60MPa), and the uniformity and the weather resistance are good.

The application of the saw mud mortar described in the embodiment 1 in preparing soft porcelain comprises the following steps:

(1) paving the silicon rubber soft porcelain mold on a Teflon drying line, and spraying saw mud mortar;

(2) then placing the mixture on a chain plate drying line for drying;

(3) and finally, cooling the silicon rubber soft porcelain mold by adopting a cooling fan to separate the silicon rubber soft porcelain mold from the solidified saw mud mortar, and preparing to obtain a soft porcelain product.

Wherein:

the thickness of the spraying saw mud mortar in the step (1) is controlled to be 3 mm.

The drying temperature in the step (2) is 100 ℃, and the time is 85 min.

Example 2

The saw mud mortar described in this embodiment 2 is composed of the following raw materials in parts by weight:

the water content of the saw mud is 10%, and the granularity is 300 meshes; the composite material comprises the following chemical components in percentage by mass: SiO 2₂Content of (C) 72% Al₂O₃Content of (3%) Na₂The content of O is 4.5%, K₂The content of O is 4 percent, and the content of CaO0.8% and MgO content of 0.05%.

The emulsion is a mixture of pure acrylic emulsion and silicone acrylic emulsion.

The specific surface area of the S95 grade mineral powder is 510m²Kg, fluidity ratio 108%, particle size 300 mesh, activity index 86% (7 days).

The toner is titanium dioxide toner.

The polypropylene short fiber has the length of 5mm and the density of 0.92g/cm³。

The cellulose is hydroxypropyl methyl cellulose.

The dispersing agent is a mixture of ammonium citrate and triethanolamine.

The defoaming agent is a mineral oil defoaming agent which is a commercially available product.

The preparation method of the saw mud mortar in the embodiment 2 comprises the following steps:

(1) adding the emulsion into a paint dispersing cylinder, controlling the rotating speed to be 1100r/min, and then sequentially adding cellulose, toner, a dispersing agent, silicic acid and polypropylene short fibers for dispersing for 70 minutes to prepare a dispersion liquid;

(2) and (2) adding S95-grade mineral powder into the dispersion liquid prepared in the step (1), stirring for 20 minutes at the rotating speed of 1100r/min, then adding the saw mud and the defoaming agent, stirring for 15 minutes at the rotating speed of 700r/min, and preparing the saw mud mortar.

Wherein:

the saw mud mortar prepared in the step (2) has high bonding strength, the highest breaking load of the bonding mortar reaches 2.1kN, the highest tensile strength reaches 1.20MPa (the national standard value is 0.60MPa), and the uniformity and the weather resistance are good.

The application of the saw mud mortar described in the embodiment 2 in preparing soft porcelain comprises the following steps:

(1) paving the silicon rubber soft porcelain mold on a Teflon drying line, and spraying saw mud mortar;

(2) then placing the mixture on a chain plate drying line for drying;

(3) and finally, cooling the silicon rubber soft porcelain mold by adopting a cooling fan to separate the silicon rubber soft porcelain mold from the solidified saw mud mortar, and preparing to obtain a soft porcelain product.

Wherein:

the thickness of the spraying saw mud mortar in the step (1) is controlled to be 4 mm.

The drying temperature in the step (2) is 90 ℃ and the time is 100 min.

Example 3

The saw mud mortar described in this embodiment 3 is composed of the following raw materials in parts by weight:

the water content of the saw mud is 15%, and the granularity is 300 meshes; the composite material comprises the following chemical components in percentage by mass: SiO 2₂Content of (C) 72% Al₂O₃Content of (3%) Na₂The content of O is 4.5%, K₂The contents of O, CaO and MgO were 4%, 0.8% and 0.05%, respectively.

The emulsion is a mixture of styrene-acrylic emulsion and silicone-acrylic emulsion.

The specific surface area of the S95 grade mineral powder is 510m²Kg, fluidity ratio 108%, particle size 300 mesh, activity index 86% (7 days).

The toner is ferric oxide toner.

The polypropylene short fiber has the length of 5mm and the density of 0.92g/cm³。

The cellulose is hydroxypropyl methyl cellulose.

The dispersant is a mixture of methylcellulose and polyethylene glycol.

The defoaming agent is a commercial product, namely a high-alcohol defoaming agent.

The preparation method of the saw mud mortar in the embodiment 3 comprises the following steps:

(1) adding the emulsion into a paint dispersing cylinder, controlling the rotating speed to be 1000r/min, and then sequentially adding cellulose, toner, a dispersing agent, silicic acid and polypropylene short fibers for dispersing for 90 minutes to prepare a dispersion liquid;

(2) and (2) adding S95-grade mineral powder into the dispersion liquid prepared in the step (1), stirring for 30 minutes at the rotating speed of 1000r/min, then adding the saw mud and the defoaming agent, stirring for 20 minutes at the rotating speed of 600r/min, and preparing the saw mud mortar.

Wherein:

the saw mud mortar prepared in the step (2) has high bonding strength, the highest breaking load of the bonding mortar reaches 2.0kN, the highest tensile strength reaches 1.10MPa (the national standard value is 0.60MPa), and the uniformity and the weather resistance are good.

The application of the saw mud mortar described in the embodiment 3, which is used for preparing flexible stone, comprises the following steps:

(1) laying a silicon rubber mold on a Teflon drying line, and spraying saw mud mortar;

(2) composite glass fiber mesh cloth;

(3) drying on a chain plate drying line;

(4) spraying stone-like paint, laying an isolating film on the stone-like paint, profiling by using a die embossing machine containing different textures, removing the isolating film, and then demolding;

(5) drying at 105 deg.C for 65 min;

(6) and cutting into different lengths by a splitting machine to prepare the flexible stone.

Wherein:

the thickness of the spraying saw mud mortar in the step (1) is controlled to be 1.5 mm.

The size of the glass fiber mesh cloth in the step (2) is 4 x 1250 mm.

And (3) drying at 90 ℃ for 20 min.

And (4) independently spraying six colors.

The specification of the die in the step (4) is 1250 × 600 × 10mm, and the pressing pressure is 0.1 MPa.

The flexible stone prepared in the embodiment 3 is light in weight, has the surface density of 6kg/m, is good in flexibility and has an excellent stone imitation effect.

Comparative example 1

The soft porcelain material described in comparative example 1 is composed of the following raw materials in parts by weight: 10 parts of Portland cement, 20 parts of heavy calcium carbonate, 60 parts of quartz sand, 4 parts of emulsion, 5 parts of solid flame retardant and 1 part of liquid flame retardant; wherein the emulsion is a mixture of pure acrylic emulsion and styrene-acrylic emulsion, the solid flame retardant is decabromodiphenylethane, and the liquid flame retardant is dimethyl methylphosphonate. When the soft porcelain is used, water accounting for 18 percent of the total weight of the raw materials is added into the raw materials while stirring the raw materials by a stirrer until the raw materials are fully dissolved and gelatinized to reach 2500 Pa.s, slurry is prepared, and then the soft porcelain is prepared by the method of example 1.

The soft porcelain materials prepared in examples 1-2 and comparative example 1 were subjected to the performance test, and the results are shown in the following table 1: