Chemically sintered foamed ceramic insulation board and manufacturing process thereof

Abstract

The invention provides a chemically sintered foamed ceramic insulation board and a manufacturing process thereof, and relates to the field of building materials, the chemically sintered foamed ceramic insulation board comprises the following materials: composite active pottery clay, calcium aluminate cement, non-metal slag tail powder, a mineral activator, a foaming agent and a modified nanometer.The preparation process comprises the following steps: S1, feeding: automatically feeding the materials from a storage tank through an auger; s2, adding water and stirring; s3, pouring into a mold: pouring the foaming slurry into the mold, standing and foaming at room temperature for 3-5 minutes, performing chemical sintering in the process, heating to a proper temperature, and cooling; s4, performing automatic temperature control maintenance; s5, demolding; S6, cutting and packaging. According to the method, the defect of high-temperature sintering in the traditional technology is overcome through chemical sintering, the energy consumption is saved, the production cost is reduced, the cost performance is high, no waste water or waste gas is discharged in the whole process, the environment cannot be polluted, and the technical effect of green production is achieved.

Description

Technical Field

[0001] The invention relates to the field of building materials, and in particular to a chemically sintered foamed ceramic insulation board and a manufacturing process thereof. Background Art

[0002] Foamed ceramic insulation board is a new type of inorganic insulation material with excellent thermal insulation and fire resistance. It is made through a high-temperature foaming process and has a closed-cell structure with high porosity. The thermal conductivity of the foamed ceramic insulation board is low, which can effectively prevent the transfer of heat and improve the insulation effect of the building. In addition, the material has the advantages of fire resistance, waterproofness, lightness, and pressure resistance, and can meet the needs of different projects. Traditional sintered foamed ceramics require a high temperature of 1200 degrees Celsius for sintering, which consumes a lot of energy and has high costs. It also causes huge pollution to the environment through the discharge of wastewater and exhaust gas. Summary of the invention

[0003] The purpose of the present invention is to provide a chemically sintered foamed ceramic insulation board and a manufacturing process thereof, so as to solve the technical problems existing in the prior art.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0005] A chemically sintered foamed ceramic insulation board and its manufacturing process include the following materials: composite active clay, calcium aluminate cement, non-metallic slag tailings, mineral stimulant, foaming agent, and modified nanometer material.

[0006] Furthermore, it includes the following mass proportions: composite active clay 40%-80%, calcium aluminate cement 10%, non-metallic slag tailings 20%, mineral stimulator 13%, foaming agent 2%-10%, and modified nanomaterial 15%.

[0007] Furthermore, it includes the following mass proportions: composite active clay 55%-75%, calcium aluminate cement 10%, non-metallic slag tailings 15%, mineral stimulator 10%, foaming agent 5%-8%, and modified nanomaterial 15%.

[0008] Furthermore, the method comprises the following preparation processes: S1: feeding, the material is automatically fed from the storage tank by an auger; S2: adding water and stirring, after adding appropriate amount of water to the material, stirring it evenly by a stirring device to obtain a foaming slurry; S3: pouring into a mold, pouring the foaming slurry into the mold, letting it stand and foam for 3-5 minutes at room temperature, during which chemical sintering is carried out, and after heating to an appropriate temperature, the temperature is lowered; S4: automatic temperature control and maintenance, through automatic temperature control, the temperature is slowly increased and decreased; S5: demoulding, after cooling, removing the fixing device on the inner film bag, pulling the inner film bag from one side of the mold to gradually pull the inner film bag out of the mold; S6: cutting and packaging, using a cutting machine to cut the demoulded ceramic insulation board into different sizes, and after cutting, the ceramic insulation board of qualified quality is packaged.

[0009] Furthermore, in S2, the stirring speed is 500-1000 r / min, and the stirring time is 2-4 min.

[0010] Furthermore, in S2, the stirring speed is 1000-1500 r / min, and the stirring time is 0.5-1 min.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) The present invention uses chemical sintering without open flame sintering, thus overcoming the production defects of high temperature sintering in traditional technology, saving energy consumption, reducing production costs, and having high cost performance;

[0013] (ii) The whole process of the present invention is simple to operate, which greatly simplifies the production process. In addition, there is no waste water or waste gas emission in the production process, which will not pollute the environment, thus achieving the technical effect of green production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a flow chart of the present invention; DETAILED DESCRIPTION

[0015] In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0016] like Figure 1As shown, in this embodiment, a chemically sintered foamed ceramic insulation board and its manufacturing process are provided, including the following materials: composite active clay, calcium aluminate cement, non-metallic slag tailings, mineral stimulants, foaming agents, and modified nanomaterials; the composite active clay is a clay material with special properties, which is made by modifying natural clay or adding other active ingredients; the calcium aluminate cement is a cement with calcium aluminate as the main component, which has the technical characteristics of fast hardening, high strength, high temperature resistance, chemical corrosion resistance and strong resistance to sulfate erosion; the non-metallic slag tailings are waste generated during the mining and processing of non-metallic minerals, and are fine powders obtained after grinding treatment, which have the technical characteristics of high fineness and potential activity; the mineral stimulant is a substance that can stimulate the potential activity of minerals, and is usually used to promote chemical reactions, improve material properties or enhance the utilization value of minerals; the modified nanomaterial refers to a material that modifies the surface or structure of nanomaterials by physical, chemical or biological methods to improve their properties or give them new functions.

[0017] Embodiment 1:

[0018] A chemically sintered foamed ceramic insulation board and its production process, comprising the following mass fractions: 40%-80% of composite active clay, 10% of calcium aluminate cement, 20% of non-metallic slag tailings, 13% of mineral activator, 2%-10% of foaming agent, and 15% of modified nanomaterial;

[0019] The preparation process includes the following:

[0020] S1: Loading, the material is automatically loaded from the storage tank through the auger;

[0021] S2: Add water and stir. After adding appropriate amount of water to the material, stir it evenly through a stirring device at a stirring speed of 500-1000r / min for 2-4min to obtain a foaming slurry.

[0022] S3: pouring into the mold, pouring the foaming slurry into the mold, leaving it to foam for 3-5 minutes at room temperature, chemically sintering within 24 hours, heating to an appropriate temperature to cause the foaming slurry to initiate a chemical reaction, and causing a solid phase reaction between the materials or forming new compounds, and then cooling down;

[0023] S4: Automatic temperature control maintenance, through automatic temperature control, the temperature is slowly increased and decreased;

[0024] S5: demoulding, after cooling, removing the fixing device on the inner film bag, pulling the inner film bag from one side of the mold to gradually pull the inner film bag out of the mold;

[0025] S6: Cutting and packaging. Use a cutting machine to cut the demoulding ceramic insulation board into different sizes. After cutting, the ceramic insulation board with qualified quality is packaged.

[0026] Embodiment 2:

[0027] A chemically sintered foamed ceramic insulation board and its production process, comprising the following mass fractions: 55%-75% of composite active clay, 10% of calcium aluminate cement, 15% of non-metallic slag tailings, 10% of mineral stimulator, 5%-8% of foaming agent, and 15% of modified nanomaterials

[0028] The preparation process includes the following:

[0029] S1: Loading, the material is automatically loaded from the storage tank through the auger;

[0030] S2: Add water and stir. After adding appropriate amount of water to the material, stir evenly through a stirring device at a stirring speed of 1000-1500r / min and a stirring time of 0.5-1min to obtain a foaming slurry;

[0031] S3: pouring into a mold, pouring the foaming slurry into the mold, the mold is an inverted T-shape, larger at the top and smaller at the bottom, which is convenient for demoulding; standing and foaming for 3-5 minutes at room temperature, chemically sintering within 24 hours, heating to an appropriate temperature, the foaming slurry triggers chemical changes, and causes solid-phase reactions between materials or forms new compounds, and then cooling; the chemical changes include: diffusion, crystallization, phase change, etc. of particles, and ultimately form densification and sintering of the material.

[0032] S4: Automatic temperature control maintenance, through automatic temperature control, the temperature is slowly increased and decreased;

[0033] S5: demoulding, after cooling, removing the fixing device on the inner film bag, pulling the inner film bag from one side of the mold to gradually pull the inner film bag out of the mold, the inner film bag is a disposable plastic bag;

[0034] S6: Cutting and packaging. Use a cutting machine to cut the demoulding ceramic insulation board into different sizes. After cutting, the qualified ceramic insulation board will be packaged. The cutting sizes are divided into: 300x300mm, 600x600mm and 300x600mm, and the thickness is 20-150mm.

[0035] It is worth noting that the specific steps and conditions of the chemical sintering method will vary depending on the material. In addition, when conducting chemical sintering experiments, you need to pay attention to safety measures to avoid the dangers caused by high temperatures and chemicals.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A chemically sintered foamed ceramic insulation board and its manufacturing process, characterized in that: The materials include: composite activated clay, calcium aluminate cement, non-metallic slag tailings, mineral activators, foaming agents, and modified nanomaterials.

2. The chemically sintered foamed ceramic insulation board and its manufacturing process according to claim 1, characterized in that: It includes the following proportions by mass: 40%-80% of composite active clay, 10% of calcium aluminate cement, 20% of non-metallic slag tailings, 13% of mineral stimulator, 2%-10% of foaming agent and 15% of modified nano-material.

3. The chemically sintered foamed ceramic insulation board and its manufacturing process according to claim 2, characterized in that: It includes the following proportions by mass: 55%-75% of composite active clay, 10% of calcium aluminate cement, 15% of non-metallic slag tailings, 10% of mineral stimulator, 5%-8% of foaming agent and 15% of modified nanomaterial.

4. The chemically sintered foamed ceramic insulation board and its manufacturing process according to claim 3, characterized in that: The preparation process includes the following: S1: Loading, the material is automatically loaded from the storage tank through the auger; S2: Add water and stir. After adding appropriate amount of water to the material, stir it evenly through a stirring device to obtain a foaming slurry; S3: pouring into the mold, pouring the foaming slurry into the mold, and letting it stand for foaming at room temperature for 3-5 minutes. Chemical sintering is carried out during this process. After heating to an appropriate temperature, the temperature is lowered; S4: Automatic temperature control maintenance, through automatic temperature control, the temperature is slowly increased and decreased; S5: demoulding, after cooling, removing the fixing device on the inner film bag, pulling the inner film bag from one side of the mold to gradually pull the inner film bag out of the mold; S6: Cutting and packaging. Use a cutting machine to cut the demoulding ceramic insulation board into different sizes. After cutting, the ceramic insulation board with qualified quality is packaged.

5. The chemically sintered foamed ceramic insulation board and its manufacturing process according to claim 4, characterized in that: In S2, the stirring speed is 500-1000 r / min, and the stirring time is 2-4 min.

6. The chemically sintered foamed ceramic insulation board and its manufacturing process according to claim 4, characterized in that: In S2, the stirring speed is 1000-1500 r / min, and the stirring time is 0.5-1 min.

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