Production method of non-fired self-insulating wall material

Abstract

This invention relates to the field of building materials technology, specifically a method for producing non-fired self-insulating wall materials, comprising the following raw materials by weight: 16-20 parts of sulfoaluminate cement, 33-36 parts of filler, 12-15 parts of powder, 10-15 parts of additives, 0.5-1 part of foaming agent, and 1-2 parts of gelling agent. This invention replaces traditional high-temperature firing with low-temperature curing and stepped solidification. From an environmental and economic perspective, the non-fired process eliminates the need for large amounts of fuel to heat the kiln, reducing carbon emissions and energy consumption at the source. It also avoids the harmful gas pollution that may be generated during high-temperature firing. Furthermore, the low-temperature process requires lower temperature resistance from equipment, reducing investment and maintenance costs for production equipment. This embodies the concept of green production and solves the pain points of high energy consumption, significant pollution, and potential material structural defects associated with traditional high-temperature firing processes, achieving synergistic optimization of performance and environmental protection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building materials, in particular to a production method of a non-burned self-insulation wall material. BACKGROUND

[0002] The self-insulation wall material is a new type of wall material with structural support and insulation functions, which can meet the building energy saving requirements without additional insulation layer, usually using cement as the base material, and adding other materials according to different use requirements and then sintering at high temperature.

[0003] The traditional wall material production relies on high-temperature sintering, which has high energy consumption and large carbon emissions, and the fuel combustion also easily produces harmful gas pollution to the environment. The high-temperature equipment needs temperature-resistant materials, which not only increases the production investment cost, but also pollutes the environment. Based on this, the present application provides a production method of a non-burned self-insulation wall material. SUMMARY

[0004] The purpose of the present application is to provide a production method of a non-burned self-insulation wall material to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application provides the following technical solution: a non-burned self-insulation wall material, comprising the following raw materials by weight: 16-20 parts of sulphoaluminate cement, 33-36 parts of filler, 12-15 parts of powder, 10-15 parts of additive, 0.5-1 part of foaming material and 1-2 parts of gel material.

[0006] The preparation method of the gel material comprises the following steps:

[0007] Step 1: boil the bagasse with 8-10% sodium hydroxide solution for 100-150 min, wash the obtained product to neutral after cooling and draining, and then cut and crush to obtain fiber material for use;

[0008] Step 2: select yeast extract, proteose peptone, potassium dihydrogen citrate, disodium hydrogen phosphate, glucose and deionized water to prepare a culture medium, inoculate the xylonimonas strain after sterilization treatment, and obtain the xylonimonas fermentation broth under the condition of 30℃ and 120rpm for 48 hours;

[0009] Step 3: add the fiber material to the xylonimonas fermentation broth, and culture at 28-32℃ under the condition of pH 4.5-5 for 5-7 days, take the surface film formed and put it into a high-pressure homogenizer, and cycle process 5-7 times under the condition of 90-100MPa to obtain the gel material.

[0010] Preferably, in step 2, the mass ratio of yeast extract, proteose peptone, potassium dihydrogen citrate, disodium hydrogen phosphate, glucose, and deionized water is 5:5:2:1.5:(20-30):1000, and the inoculation amount of Bacillus melanosporus is 3-5% of the total volume of the culture medium.

[0011] Preferably, in step 3, the mass ratio of the fiber material and the Bacillus melanosporus fermentation broth is 1:(9-10).

[0012] Preferably, the additive is carbonized rice husk ash with a particle size of 50-80 μm.

[0013] Preferably, the preparation method of the filler is as follows: the steel slag waste is put into a plasma activation furnace, argon gas is passed at a flow rate of 10 L / min, the power is set to 20 kW, and the activated slag is obtained after 10-20 min of activation treatment. The activated slag is added to a granulator and pressure-formed into 0.5-1.5 mm granules under the condition of 12-15 MPa to obtain the filler.

[0014] Preferably, the preparation method of the powder is as follows: waste glass is selected as the raw material, crushed and ground to a particle size of ≤100 mesh to obtain a coarse material, the coarse material is added to a stirred tank, sodium silicate is added, and ball milling treatment is performed at 200-300 rpm for 4-5 h. The obtained product is transferred into a melting furnace, heated to 700-750°C for 50-80 min, and then naturally cooled, crushed, ground, and sieved to obtain the powder.

[0015] Preferably, the mass ratio of the coarse material and sodium silicate is 100:(15-20).

[0016] Preferably, the preparation method of the foaming material is as follows: sodium dodecyl sulfate and graphene are added to an ultrasonic dispersing machine, the power is set to 800 W and the frequency is set to 40 kHz, and ultrasonic dispersion is performed for 30-40 min. The obtained product is transferred into a constant-temperature reaction kettle, and constant-temperature stirring reaction is performed at 45-50°C and 180-220 rpm for 1.5-2.5 h to obtain the foaming material.

[0017] Preferably, the mass ratio of sodium dodecyl sulfate and graphene is 95:(3-5).

[0018] Preferably, the production method of the non-burned self-insulation wall material comprises the following steps:

[0019] S1: Sulfate cement, filler, powder, and additive are added to a sealed stirrer, dry mixed at a speed of 400-500 rpm for 1-2 min to obtain dry material;

[0020] S2: the foaming material and water are mixed and then injected into a closed stirrer through a metering pump, the rotating speed is adjusted to 1000-1200 rpm, nitrogen is synchronously introduced, and stirring is continuously performed for 3-5 min, then the gel material is added, and stirring is continuously performed for 3-5 min, to obtain a slurry, wherein the mass ratio of the foaming material to water is 1:1.5;

[0021] S3: the slurry is injected into a mold, and then transferred into a constant temperature and humidity box, and left to stand for 3-4 h under the condition of a temperature of 38-42 DEG C and a relative humidity of 80-85%, to obtain a blank after demolding;

[0022] S4: the blank is transferred into an oven, and left to stand for 1 h under the condition of a temperature of 40-45 DEG C, then left to stand for 1-2 h under the condition of a temperature of 55-65 DEG C, and then transferred into a curing room, and left to stand for 7-10 d under the condition of a temperature of 22-28 DEG C and a relative humidity of 80-85%, to obtain a fired self-insulation wall material.

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] The application discloses a production method of a fired self-insulation wall material, and replaces traditional high-temperature firing with low-temperature curing and ladder curing, which is environmentally friendly and economical. The fired process does not need to consume a large amount of fuel to heat a kiln, thereby reducing carbon emissions and energy consumption from the source, avoiding harmful gas pollution that may be generated in the high-temperature firing process, and reducing the temperature requirement of the equipment, thereby reducing the investment and maintenance cost of the production equipment, practicing the green production concept, solving the pain points of high energy consumption, serious pollution and material structure defects caused by the traditional high-temperature firing process, and realizing the synergistic optimization of performance and environmental protection. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment 1

[0026] The fired self-insulation wall material comprises the following raw materials in parts by weight: 16 parts of sulphoaluminate cement, 33 parts of filler, 12 parts of powder, 10 parts of additive, 0.5 part of foaming material and 1 part of gel material.

[0027] The preparation method of the gel material comprises the following steps:

[0028] Step 1: the bagasse is boiled with a mass fraction of 8% sodium hydroxide solution for 100 min, the obtained product is cooled, drained and then washed until neutral, and then subjected to shearing and crushing to obtain a fiber material, which is ready for use.

[0029] Step 2: Select yeast extract, proteose peptone, potassium dihydrogen citrate, disodium hydrogen phosphate, glucose, and deionized water to prepare a culture medium, sterilize the culture medium, inoculate the culture medium with acetobacter xylinum, and obtain the acetobacter xylinum fermentation broth by culturing at 30°C and 120 rpm for 48 hours;

[0030] Step 3: Add the fiber material to the acetobacter xylinum fermentation broth, and incubate at pH 4.5 and 28°C for 5 days. Take the surface film formed and put it into a high-pressure homogenizer for cyclic treatment at 90 MPa for 5 times to obtain the gel material.

[0031] In step 2, the mass ratio of yeast extract, proteose peptone, potassium dihydrogen citrate, disodium hydrogen phosphate, glucose, and deionized water is 5:5:2:1.5:20:1000, and the inoculation amount of acetobacter xylinum is 3% of the total volume of the culture medium.

[0032] In step 3, the mass ratio of the fiber material and the acetobacter xylinum fermentation broth is 1:9.

[0033] The additive is carbonized rice husk ash with a particle size of 50 μm.

[0034] The preparation method of the filler is as follows: put the steel slag waste into a plasma activation furnace, pass argon at a flow rate of 10 L / min, set the power to 20 kW, and activate for 10 min to obtain activated slag material. The activated slag material is added to a granulator and pressure-formed into 0.5 mm granules at 12 MPa to obtain the filler.

[0035] The preparation method of the powder material is as follows: select waste glass as the raw material, crush and grind to a particle size of ≤100 mesh to obtain coarse material, add the coarse material to a stirred tank, add sodium silicate, and ball mill at 200 rpm for 4 h. The obtained product is transferred into a melting furnace, heated to 700°C for 50 min, and then naturally cooled, crushed, ground, and sieved to obtain the powder material.

[0036] The mass ratio of the coarse material and sodium silicate is 100:15.

[0037] The preparation method of the foaming material is as follows: add sodium dodecyl sulfate and graphene to an ultrasonic dispersing machine, set the power to 800 W and the frequency to 40 kHz, and ultrasonically disperse for 30 min. The obtained product is transferred into a constant-temperature reaction kettle, and constant-temperature stirring reaction is carried out at 45°C and 180 rpm for 1.5 h to obtain the foaming material.

[0038] The mass ratio of sodium dodecyl sulfate and graphene is 95:3.

[0039] The production method of the non-burned self-insulation wall material includes the following steps:

[0040] S1: Add sulphoaluminate cement, filler, powder, additive into a closed mixer, set the speed at 400 rpm, dry mix for 1 min, to obtain dry materials;

[0041] S2: Mix the foaming agent and water, then inject them into the closed mixer through a metering pump, adjust the speed to 1000 rpm, and simultaneously introduce nitrogen, continue to stir for 3 min, then add the gelatinous agent, continue to stir for 3 min, to obtain a slurry, wherein the mass ratio of the foaming agent to water is 1:1.5;

[0042] S3: After injecting the slurry into the mold, transfer it into a constant temperature and humidity box, and let it stand for 3 h at a temperature of 38℃ and a relative humidity of 80%, then demold to obtain a green body;

[0043] S4: Transfer the green body into an oven, and keep it at 40℃ for 1 h, then increase the temperature to 55℃ and keep it for 1 h, then transfer it into a curing room, and keep it at a temperature of 22℃ and a relative humidity of 80% for 7 d, to obtain a fired self-insulation wall material. Example 2:

[0044] The fired self-insulation wall material comprises the following raw materials by weight: sulphoaluminate cement 18 parts, filler 35 parts, powder 13 parts, additive 12 parts, foaming agent 0.8 parts, and gelatinous agent 1.5 parts.

[0045] The preparation method of the gelatinous agent comprises the following steps:

[0046] Step 1: Boil the bagasse with a 9% sodium hydroxide solution by mass fraction for 125 min, wash the obtained product until it is neutral after cooling and draining, then shear and crush it to obtain a fibrous material, for use;

[0047] Step 2: Select yeast extract, proteose peptone, potassium dihydrogen citrate, disodium hydrogen phosphate, glucose, and deionized water to prepare a culture medium, sterilize the culture medium, inoculate it with acetic acid bacteria, and then shake and cultivate the obtained product at 30℃ and 120 rpm for 48 hours to obtain an acetic acid bacteria fermentation liquor;

[0048] Step 3: Add the fibrous material to the acetic acid bacteria fermentation liquor, and let it stand and cultivate at pH 4.8 and 30℃ for 6 days, then put the surface film formed into a high-pressure homogenizer, and cycle it at 95 MPa for 6 times to obtain the gelatinous agent.

[0049] In step 2, the mass ratio of yeast extract, proteose peptone, potassium dihydrogen citrate, disodium hydrogen phosphate, glucose, and deionized water is 5:5:2:1.5:25:1000, and the inoculation amount of acetic acid bacteria is 4% of the total volume of the culture medium.

[0050] In step 3, the mass ratio of the fibrous material to the acetic acid bacteria fermentation liquor is 1:9.5.

[0051] The additive is selected from carbonized rice husk ash with a particle size of 65 μm.

[0052] The preparation method of the filler is as follows: the steel slag waste is put into a plasma activation furnace, argon gas is passed in at a flow rate of 10 L / min, the power is set to 20 kW, and the activation treatment is performed for 15 min to obtain activated slag material; the activated slag material is added into a granulator, and pressure forming is performed at 13 MPa to obtain 1 mm granular material, thereby obtaining the filler.

[0053] The preparation method of the powder material is as follows: waste glass is selected as the raw material, and is crushed and ground to a particle size of ≤100 mesh to obtain coarse material; the coarse material is added into a stirred tank, and sodium silicate is further added; ball milling treatment is performed at 250 rpm for 4.5 h; the obtained product is transferred into a melting furnace, and is heated to 725 ℃ and kept for 65 min; after natural cooling, the obtained product is broken, ground, and sieved to obtain the powder material.

[0054] The mass ratio of the coarse material to sodium silicate is 100:18.

[0055] The preparation method of the foaming material is as follows: sodium dodecyl sulfate and graphene are added into an ultrasonic dispersion machine, the power is set to 800 W, the frequency is set to 40 kHz, and ultrasonic dispersion is performed for 35 min; the obtained product is transferred into a constant-temperature reaction kettle, and constant-temperature stirring reaction is performed at 48 ℃ and 200 rpm for 2 h, thereby obtaining the foaming material.

[0056] The mass ratio of the sodium dodecyl sulfate to graphene is 95:4.

[0057] The production method of the non-burned self-insulation wall material includes the following steps:

[0058] S1: Sulfate cement, filler, powder material, and additive are added into a closed stirrer, dry mixing is performed at a speed of 450 rpm for 1.5 min, and dry material is obtained;

[0059] S2: The foaming material is mixed with water, and then is injected into the closed stirrer through a metering pump; the speed is adjusted to 1100 rpm, nitrogen gas is synchronously introduced, and continuous stirring treatment is performed for 4 min; then, the gel material is added, and stirring is continued for 4 min, thereby obtaining slurry; the mass ratio of the foaming material to water is 1:1.5;

[0060] S3: The slurry is injected into a mold, and then is transferred into a constant-temperature and constant-humidity box; the temperature is 40 ℃, the relative humidity is 82%, and the slurry is left to stand for 3.5 h; after demolding, a blank body is obtained;

[0061] S4: The blank body is transferred into an oven, and is kept at 42 ℃ for 1 h; then, the temperature is increased to 60 ℃, and the blank body is kept at this temperature for 1.5 h; then, the blank body is transferred into a curing room, and is cured at a temperature of 25 ℃ and a relative humidity of 82% for 8 d, thereby obtaining the non-burned self-insulation wall material. Example 3:

[0062] The non-burning self-insulation wall material comprises the following raw materials in parts by weight: 20 parts of sulphoaluminate cement, 36 parts of filler, 15 parts of powder, 15 parts of additive, 1 part of foaming material and 2 parts of gel material.

[0063] The preparation method of the gel material comprises the following steps:

[0064] Step 1: boil the bagasse with a 10% mass fraction of sodium hydroxide solution for 150 min, wash the obtained product to neutral after cooling and draining, and then cut and crush to obtain a fiber material for use;

[0065] Step 2: select yeast extract, proteose peptone, potassium dihydrogen citrate, disodium hydrogen phosphate, glucose and deionized water to prepare a culture medium, inoculate the culture medium with acetobacter xylinum after sterilization, and then culture the obtained product at 30°C and 120 rpm for 48 hours to obtain an acetobacter xylinum fermentation liquor;

[0066] Step 3: add the fiber material to the acetobacter xylinum fermentation liquor, and culture at pH 5 and 32°C for 7 days, then take the surface film formed and put it into a high-pressure homogenizer for cyclic treatment at 100 MPa for 7 times to obtain the gel material.

[0067] In step 2, the mass ratio of yeast extract, proteose peptone, potassium dihydrogen citrate, disodium hydrogen phosphate, glucose and deionized water is 5:5:2:1.5:30:1000, and the inoculation amount of acetobacter xylinum is 5% of the total volume of the culture medium.

[0068] In step 3, the mass ratio of the fiber material to the acetobacter xylinum fermentation liquor is 1:10.

[0069] The additive is selected from carbonized rice husk ash with a particle size of 80 μm.

[0070] The preparation method of the filler is as follows: put the steel slag waste into a plasma activation furnace, pass in argon at a flow rate of 10 L / min, set the power to 20 kW, and activate for 20 min to obtain activated slag material, then put the activated slag material into a granulator, and pressure form 1.5 mm granules under the condition of 15 MPa to obtain the filler.

[0071] The preparation method of the powder is as follows: select waste glass as raw material, crush and grind to obtain a coarse material with a particle size of ≤100 mesh, add the coarse material and sodium silicate into a stirred tank, and ball mill at 300 rpm for 5 h, then transfer the obtained product into a melting furnace, heat to 750°C and keep for 80 min, and then naturally cool the obtained product, crush, grind and screen to obtain the powder.

[0072] The mass ratio of the coarse material to sodium silicate is 100:20.

[0073] The preparation method of the foaming material is as follows: sodium dodecyl sulfate and graphene are added to an ultrasonic disperser, the power is set to 800W and the frequency to 40kHz, and the ultrasonic dispersion is carried out for 40min. The resulting product is transferred to a constant temperature reaction vessel and stirred at 50℃ and 220rpm for 2.5h to obtain the foaming material.

[0074] The mass ratio of sodium dodecyl sulfate to graphene is 95:5.

[0075] The production method of the non-fired self-insulating wall material includes the following steps:

[0076] S1: Add sulfoaluminate cement, filler, powder, and additives to a closed mixer, set the speed to 500 rpm and dry mix for 2 minutes to obtain dry material;

[0077] S2: Mix the foaming material and water and inject it into a closed mixer through a metering pump. Adjust the speed to 1200 rpm and simultaneously introduce nitrogen gas. Continue stirring for 5 minutes. Then add the gel material and continue stirring for 5 minutes to obtain a slurry. The mass ratio of foaming material to water is 1:1.5.

[0078] S3: After the slurry is injected into the mold, it is transferred to a constant temperature and humidity chamber and left to stand for 4 hours at a temperature of 42℃ and a relative humidity of 85%. After demolding, the green body is obtained.

[0079] S4: Transfer the green body to an oven and keep it at 45℃ for 1 hour, then raise the temperature to 65℃ and keep it at 65℃ for 2 hours, then transfer it to a curing room and cure it at 28℃ and 85% relative humidity for 10 days to obtain a non-fired self-insulating wall material.

[0080] Comparative Example 1: The difference between this comparative example and Example 1 is that ordinary cellulose powder purchased from Shanghai Anpu Experimental Technology Co., Ltd. was used to replace the gel material.

[0081] Comparative Example 2 differs from Example 1 in that the filler preparation was not plasma activated.

[0082] Comparative Example 3 differs from Example 1 in that an equal amount of sodium dodecyl sulfate is used instead of foaming material.

[0083] Comparative Example 4 differs from Example 1 in that sodium silicate was not added during the powder preparation process.

[0084] Test method: Self-insulating wall materials were produced according to the production methods of Examples 1-3 and Comparative Examples 1-4 and prepared into 100mm×100mm×100mm standard samples for performance testing.

[0085] Compressive strength: According to GB / T2542-2012 "Test Methods for Masonry Bricks", the standard specimens were tested for compressive strength using a pressure testing machine, and the average value of 3 parallel tests was taken.

[0086] Thermal conductivity: According to GB / T10294-2008 "Determination of steady-state thermal resistance and related properties of thermal insulation materials - protective hot plate method", the thermal conductivity of the sample was measured at 25℃ to reflect the thermal insulation performance.

[0087] Water absorption rate: According to GB / T4111-2013 "Test methods for concrete blocks and bricks", the water absorption rate to dry weight ratio is measured after the sample is soaked in water for 24 hours to evaluate the water resistance of the material.

[0088] The test data for Examples 1-3 and Comparative Examples 1-4 are recorded in the table below:

[0089] Table 1:

[0090] Group Compressive strength (MPa) Thermal conductivity W / (m・K) Water absorption (%) Example 1 4.2 0.075 8.5 Example 2 5.1 0.068 7.2 Example 3 4.5 0.072 8.0 Comparative Example 1 3.1 0.092 11.8 Comparative Example 2 2.8 0.095 12.5 Comparative Example 3 3.3 0.105 11.2 Comparative Example 4 2.5 0.098 13.6

[0091] By comparing and analyzing the data in the table, it can be seen that the test data of compressive strength, thermal conductivity and water absorption rate in Examples 1-3 are all better than those in Comparative Examples 1-4.

[0092] This demonstrates that the gel material, through alkali treatment of sugarcane bagasse fiber and xylitol fermentation membrane, forms a three-dimensional network structure after homogenization. This structure, resembling a microscopic skeleton, permeates the interior of the material, tightly binding components such as sulfoaluminate cement and fillers. After plasma activation, the steel slag has more surface active sites, reacting more fully with cement hydration products to form a dense hydration gel layer. This transforms the filler from loose particles into a load-bearing support. Under the synergistic effect of both, stress can be evenly distributed through the gel network when the material is under stress, while the activated filler resists deformation. This avoids the problem of traditional wall materials falling apart due to weak interfacial bonding, effectively improving compressive strength.

[0093] When graphene is combined with sodium dodecyl sulfate in the foaming material, the sheet-like structure of graphene separates and stabilizes the air bubbles, preventing them from merging and breaking. This creates a large number of uniform and closed pores inside the material, which effectively block heat transfer. The lightweight and porous carbonized rice husk ash filling the matrix further reduces the heat conduction path, making the pore structure required for heat preservation more stable. With the auxiliary effect of rice husk ash, the heat conduction efficiency through the material is significantly reduced, achieving the purpose of self-insulation.

[0094] Furthermore, the material preparation process does not require high-temperature sintering. Instead, it mainly replaces traditional high-temperature firing through low-temperature curing and step-by-step solidification. In terms of environmental protection and economy, the no-firing process does not require the consumption of a large amount of fuel to heat the kiln, reducing carbon emissions and energy consumption from the source. It also avoids the pollution of harmful gases that may be generated during high-temperature firing. At the same time, the low-temperature process has lower requirements for the temperature resistance of the equipment, reducing the investment and maintenance costs of production equipment. It practices the concept of green production and solves the pain points of high energy consumption, large pollution and easy to cause material structural defects in traditional high-temperature firing processes, achieving synergistic optimization of performance and environmental protection.

[0095] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0096] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A non-burnt self-insulating wall material, characterized in that, The raw materials include the following components by weight: 16-20 parts of sulphoaluminate cement, 33-36 parts of filler, 12-15 parts of powder, 10-15 parts of additive, 0.5-1 part of foaming agent, and 1-2 parts of gelatinous agent; The preparation method of the gelatinous agent comprises the following steps: Step 1: boiling bagasse with 8-10% sodium hydroxide solution by mass fraction for 100-150 min, washing the obtained product to neutral after cooling and draining, and then shearing and crushing to obtain fiber material; Step 2: selecting yeast extract, proteose peptone, potassium dihydrogen citrate, disodium hydrogen phosphate, glucose and deionized water to prepare a culture medium, inoculating the culture medium with acetobacter xylinum strain after sterilization, and then culturing the obtained product at 30°C and 120 rpm for 48 hours to obtain acetobacter xylinum fermentation liquor; Step 3: adding the fiber material to the acetobacter xylinum fermentation liquor, and culturing the mixture at 28-32°C and pH 4.5-5 for 5-7 days, then taking the surface film formed and putting it into a high-pressure homogenizer for cyclic treatment at 90-100 MPa for 5-7 times to obtain the gelatinous agent; The preparation method of the foaming agent is as follows: adding sodium dodecyl sulfate and graphene into an ultrasonic dispersion machine, setting the power to 800 W and the frequency to 40 kHz, and ultrasonic dispersing for 30-40 min, then transferring the obtained product into a constant-temperature reaction kettle, and stirring and reacting the product at 45-50°C and 180-220 rpm for 1.5-2.5 h to obtain the foaming agent; The mass ratio of sodium dodecyl sulfate to graphene is 95: (3-5).

2. The non-burnt self-insulating wall material according to claim 1, characterized in that, In step 2, the mass ratio of yeast extract, proteose peptone, potassium dihydrogen citrate, disodium hydrogen phosphate, glucose and deionized water is 5:5:2:1.5: (20-30):1000, and the inoculation amount of acetobacter xylinum strain is 3-5% of the total volume of the culture medium.

3. The non-burnt self-insulating wall material according to claim 1, characterized in that, In step 3, the mass ratio of the fiber material to the acetobacter xylinum fermentation liquor is 1: (9-10).

4. The non-burnt self-insulating wall material according to claim 1, characterized in that, The additive is selected from carbonized rice husk ash with a particle size of 50-80 μm.

5. The non-burnt self-insulating wall material according to claim 1, characterized in that, The preparation method of the filler is as follows: putting steel slag waste into a plasma activation furnace, passing argon at a flow rate of 10 L / min, setting the power to 20 kW, and activating the steel slag waste for 10-20 min to obtain activated slag material, then putting the activated slag material into a granulator, and pressure forming the activated slag material into 0.5-1.5 mm granular material at 12-15 MPa to obtain the filler.

6. The non-burnt self-insulating wall material according to claim 1, characterized in that, The preparation method of the powder is as follows: selecting waste glass as raw material, crushing and grinding the waste glass to a particle size of ≤100 mesh to obtain coarse material, putting the coarse material into a stirred tank, adding sodium silicate, and ball milling the mixture at 200-300 rpm for 4-5 h, then transferring the obtained product into a melting furnace, heating the product to 700-750°C and maintaining the temperature for 50-80 min, naturally cooling the product, and then crushing, grinding and screening the product to obtain the powder.

7. The non-burnt self-insulating wall material according to claim 6, characterized in that, The mass ratio of the coarse material to sodium silicate is 100: (15-20).

8. A process for the production of a non-burnt self-insulating wall material according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: S1: adding sulphoaluminate cement, filler, powder, additive into a sealed stirrer, setting the rotation speed to 400-500 rpm, and dry mixing for 1-2 min to obtain dry material; S2: the foaming material and water are mixed and then injected into a closed stirrer by a metering pump, the rotating speed is adjusted to 1000-1200 rpm, nitrogen is synchronously introduced, and the stirring is continuously performed for 3-5 min, then the gel material is added, the stirring is continuously performed for 3-5 min, and a slurry is obtained, wherein the mass ratio of the foaming material to water is 1:1.5; S3: the slurry is injected into a mold, and then transferred into a constant temperature and humidity box, and left to stand for 3-4 h under the conditions of a temperature of 38-42 ℃ and a relative humidity of 80-85%, and then the green body is obtained after demolding; S4: the green body is transferred into an oven, and left to stand for 1 h under the condition of a temperature of 40-45 ℃, then the temperature is increased to 55-65 ℃ and left to stand for 1-2 h, then transferred into a curing room, and left to stand for 7-10 d under the conditions of a temperature of 22-28 ℃ and a relative humidity of 80-85%, and a non-burning self-insulation wall material is prepared.