CN114573317A - Foamed porous ultrahigh water material and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of filling materials, in particular to a foamed porous ultra-high water material and a preparation method thereof. The raw material mass ratio of the foamed porous ultra-high water material is (95-98): (0.1-1): (0.5-2): (0.1-2) cement, alkali metal salt, water reducer and dispersant and the mass Foaming agent and foaming agent A whose ratio is (0.1-2): (0.5-5); the raw materials that form material B include those whose mass ratio is (10-50): (10-50): (10-40). Gypsum, lime and aggregate and foaming agent B, dispersing agent and quick-setting agent with a mass ratio of (0.1-2):(0.5-10):(0.1-5). The foam-like porous ultra-high water material has a honeycomb-like porous structure, which is in a foam shape as a whole, can absorb soluble salt and gas, and the ultra-high water material has strong compressive capacity, and can be effectively used for filling in the process of coal mining. .

Description

Foam-like porous ultra-high water material and preparation method thereof

technical field

The invention relates to the technical field of filling materials, in particular to a foamed porous ultra-high water material and a preparation method thereof.

Background technique

Backfill mining is an important mining process in coal mining, and backfill material is the core of the process. At present, the filling materials used in backfill mining mainly include coal gangue, fly ash, cementitious paste, tailings mortar and ultra-high water filling materials. Ultra-high water filling material is a new type of material developed in recent years. It has the advantages of simple process, low cost, adjustable and controllable physical and chemical properties, etc., so it is favored by the majority of coal enterprises. Ultra-high water filling material refers to a material with a water-cement ratio greater than 6.5:1 and a water volume greater than 95%.

Now, mine water and coal preparation wastewater produced in the process of coal mining generally contain soluble inorganic salts and sulfur-containing compounds, and are generally acidic. On the other hand, the underground mines contain methane, sulfur dioxide, hydrogen sulfide, carbon monoxide, gas and other toxic and harmful gases, which not only bring great physical and mental harm to the mining workers, but also cause serious ecological environmental pollution to the surrounding environment of the mining area. However, the ultra-high water filling material in the prior art is a solid non-porous material, which can only achieve filling and cannot absorb the soluble salts and gases in the coal mining process. Mining is prone to safety accidents.

In view of this, the present invention is proposed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a foamed porous ultra-high water material and a preparation method thereof. The foam-like porous ultra-high water material has a honeycomb-like porous structure, which is in a foam shape as a whole, can absorb soluble salt and gas, and the ultra-high water material has strong compressive capacity, and can be effectively used for filling in the process of coal mining. .

The present invention is realized in this way:

In a first aspect, the present invention provides a foamed porous ultra-high water material, the raw materials of which include material A and material B with a mass ratio of 1:(1-2);

The raw materials for forming the first mixture include: a first mixture and a second mixture with a mass ratio of 1:(6-15), wherein the raw materials for forming the first mixture include a mass ratio of (95-98) : (0.1-1): (0.5-2): (0.1-2) cement, alkali metal salt, water reducing agent and dispersant; the raw materials for forming the second mixture include a mass ratio of (0.1-2) : (0.5-5) foaming agent and foaming agent A;

The raw materials for forming the B material include: the third mixture and the fourth mixture with a mass ratio of 1:(6-15), wherein the raw materials for forming the third mixture include a mass ratio of (10-50) : (10-50): (10-40) gypsum, lime and aggregate; the raw materials for forming the fourth mixture include mass ratio of (0.1-2): (0.5-10): (0.1-5) Foaming agent B, dispersing agent and accelerator.

In an optional embodiment, the raw materials for forming the second mixture and the fourth mixture respectively further comprise water;

Preferably, the mass ratio of the foaming agent, the foaming agent A and the water is (0.1-2):(0.5-5):(93-99);

Preferably, the mass ratio of the foaming agent B, the dispersing agent, the setting accelerator and the water is (0.1-2):(0.5-10):(0.1-5):(90-99) ).

In an optional embodiment, the cement includes at least one of aluminum-based cement and Portland cement;

Preferably, the aluminum-based cement includes at least one of aluminates, sulfoaluminates and iron aluminates.

In an optional embodiment, the alkali metal salt includes at least one of a sodium salt and a potassium salt;

Preferably, the sodium salt includes at least one of sodium chloride, sodium sulfate and sodium nitrate;

Preferably, the potassium salt includes at least one of potassium chloride, potassium sulfate and potassium sulfate.

In an optional embodiment, the water-reducing agent includes at least one of a polycarboxylic acid-based water-reducing agent and a naphthalene-based water-reducing agent;

Preferably, the dispersant includes a cellulose ether dispersant;

Preferably, the cellulose ether-based dispersant includes at least one of methyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl cellulose.

In an optional embodiment, the foaming agent includes at least one of sodium sulfonate surfactant, quaternary ammonium salt surfactant, Tween and Span;

Preferably, the sodium sulfonate surfactant includes sodium dodecyl sulfonate and sodium dodecyl benzene sulfonate, and the quaternary ammonium salt surfactant includes cetyltrimethylammonium chloride and ten Hexaalkyltrimethylammonium bromide,

In an optional embodiment, the foaming agent A includes at least one of sulfites, bicarbonates, carbonates, metal powders, oxidants and carbides;

Preferably, the foaming agent A includes sodium sulfite, potassium sulfite, ammonium sulfite, sodium bisulfite, potassium bisulfite, ammonium bisulfite, potassium bicarbonate, sodium bicarbonate, potassium carbonate, sodium carbonate, hydrogen peroxide , at least one of aluminum powder, iron powder, manganese powder, zinc powder and calcium carbide.

In an optional embodiment, the gypsum includes at least one of pure gypsum, desulfurized gypsum, phosphogypsum and fluorogypsum;

Preferably, the aggregate comprises at least one of fly ash, coal gangue and inorganic construction solid waste.

In an optional embodiment, the foaming agent B includes at least one of aluminum-based compounds and manganese-based compounds;

Preferably, the foaming agent B comprises at least one of aluminum sulfate, aluminum nitrate, aluminum chloride, alum, polyaluminum sulfate, polyaluminum chloride, polyaluminum ferric sulfate, manganese dioxide and manganese oxide ore;

Preferably, the accelerator includes lignin compounds;

Preferably, the accelerator includes at least one of lignin and sodium lignosulfonate.

In a second aspect, the present invention provides a method for preparing a foamed porous ultra-high water material according to the foregoing embodiment, comprising: forming a first mixture of cement, an alkali metal salt, a water reducing agent and a dispersant according to a mass ratio,

Mixing foaming agent and foaming agent A to form a second mixture;

mixing gypsum, lime and aggregate to form a third mix;

Mix the foaming agent B, the dispersant and the accelerator to form the fourth mixture;

Then, the first mixture and the second mixture are mixed to form a material; the third mixture and the fourth mixture are mixed to form a second material;

Next, mixing the A material and the B material to form the foamed porous ultra-high water material;

Preferably, the temperature in the process of preparing the foamed porous ultra-high water material is 20-30°C.

In a third aspect, an embodiment of the present invention provides an application of the foamed porous ultra-high water material described in the foregoing embodiment as a filling material;

Preferably, the filler material is the filler material used in the coal mining process.

The present invention has the following beneficial effects: the embodiment of the present invention can ensure that the formed ultra-high water material has a honeycomb porous structure by using specific raw materials and raw material ratios, so that the ultra-high water material presents a foam shape, and then the ultra-high water The material can dissolve metal salts and gases, ensuring the safety of coal mining. At the same time, the ultra-high water material has extremely high compressive strength and can be effectively used for filling in the coal mining process.

Detailed ways

In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below. If the specific conditions are not indicated in the examples, it is carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used without the manufacturer's indication are conventional products that can be purchased from the market.

An embodiment of the present invention provides a foamed porous ultra-high water material, the raw materials of which include material A and material B with a mass ratio of 1:(1-2); for example, the mass ratio of material A and material B may be 1:1, 1:1.2, 1:1.3, 1:1.4, 1:1.5, 1:1.6, 1:1.7, 1:1.8, 1:1.9, and 1:2, etc. Any value between 1:(1-2).

Wherein, the raw material that forms described first material includes: mass ratio is the first mixture and the second mixture of 1:(6-15), for example, the mass ratio of the first mixture and the second mixture can be 1: 6, 1:7, 1:8, 1:9, 1:10, 1:11, 1:12, 1:13, 1:14, 1:15, etc. Any value between 1:(6-15) .

Specifically, the raw materials for forming the first mixture include cement, alkali metal salt, water reducing agent and Dispersant; for example, the mass ratio of cement, alkali metal salt, water reducer and dispersant can be: 96:1:1.5:1.5, 95:1:2:2, 98:0.5:0.5:1, etc. (95- 98): (0.1-1): (0.5-2): Any value between (0.1-2). The raw materials for forming the second mixture include foaming agent and foaming agent A with a mass ratio of (0.1-2):(0.5-5); for example, the mass ratio of foaming agent and foaming agent A is: 1 :2, 1:5, 2:5, 2:1, and 0.1:1, etc. (0.1-2): Any value between (0.5-5).

Further, the raw materials for forming the second mixture respectively also include water; and the mass ratio of the foaming agent, the foaming agent A and the water is (0.1-2): (0.5-5): (93-99); for example, it can be any value between 2:1:96, 2:1:97, etc. (0.1-2):(0.5-5):(93-99).

Further, the raw materials for forming the B material include: the third mixture and the fourth mixture whose mass ratio is 1:(6-15), for example, the mass ratio of the third mixture and the fourth mixture can be 1 :6, 1:7, 1:8, 1:9, 1:10, 1:11, 1:12, 1:13, 1:14, 1:15, etc. 1:(6-15) numerical value. Wherein, the raw materials for forming the third mixture include gypsum, lime and aggregate in a mass ratio of (10-50):(10-50):(10-40); for example, the mass of gypsum, lime and aggregate The ratio can be any value between 45:45:10, 40:40:20, 40:50:10, etc. (10-50):(10-50):(10-40). The raw materials for forming the fourth mixture include a foaming agent B, a dispersant and a setting accelerator in a mass ratio of (0.1-2):(0.5-10):(0.1-5). For example, the mass ratio of foaming agent B, dispersant and accelerator can be 1:2:1, 0.1:0.5:0.5, 1.5:6:5, etc. (0.1-2):(0.5-10):(0.1 -5) any value between.

Further, the raw materials for forming the fourth mixture further include water; wherein, the mass ratio of the foaming agent B, the dispersing agent, the setting accelerator and the water is (0.1-2): (0.5 -10):(0.1-5):(90-99), for example can be 1:2:1:96 and 1:2:1:97 etc. (0.1-2):(0.5-10):(0.1- 5): Any ratio between (90-99).

The use of the above-mentioned raw materials and proportions can ensure that the formed ultra-high water material has a honeycomb porous structure, so that the ultra-high water material is in a foam shape, and then the ultra-high water material can dissolve metal salts and gases to ensure the safety of coal mining. sex. At the same time, the ultra-high water material has extremely high compressive strength and can be effectively used for filling in the coal mining process.

Further, the cement includes at least one of aluminum-based cement and Portland cement; wherein, the aluminum-based cement includes at least one of aluminate, sulfoaluminate and iron aluminate. The alkali metal salt includes at least one of sodium salt and potassium salt; wherein, the sodium salt includes at least one of sodium chloride, sodium sulfate and sodium nitrate; wherein, the potassium salt includes potassium chloride, At least one of potassium sulfate and potassium sulfate. Water reducing agent includes at least one of polycarboxylic acid water reducing agent and naphthalene water reducing agent; dispersing agent includes cellulose ether dispersing agent; for example, methyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose at least one of cellulose and hydroxypropyl cellulose.

Foaming agents include sodium sulfonate surfactants (eg, sodium dodecyl sulfonate and sodium dodecylbenzene sulfonate), quaternary ammonium salt surfactants (eg, cetyltrimethylammonium chloride and at least one of cetyltrimethylammonium bromide), Tween (eg, Tween 20, 40, 60, or 80), and Span (eg, Span 20, 80).

Foaming agent A includes at least one of sulfite, bicarbonate, carbonate, metal powder, oxidant and carbide; specifically, the foaming agent A includes sodium sulfite, potassium sulfite, ammonium sulfite, At least one of sodium bisulfite, potassium bisulfite, ammonium bisulfite, potassium bicarbonate, sodium bicarbonate, potassium carbonate, sodium carbonate, hydrogen peroxide, aluminum powder, iron powder, manganese powder, zinc powder and calcium carbide.

The gypsum includes at least one of pure gypsum, desulfurized gypsum, phosphogypsum and fluorogypsum; the aggregate includes at least one of fly ash, coal gangue and inorganic construction solid waste.

The foaming agent B includes at least one of aluminum-based compounds and manganese-based compounds; specifically, the foaming agent B includes aluminum sulfate, aluminum nitrate, aluminum chloride, alum, polyaluminum sulfate, polyaluminum chloride , at least one of polyaluminum ferric sulfate, manganese dioxide and manganese oxide ore;

The setting accelerator includes lignin compounds; for example, at least one of lignin and sodium lignosulfonate.

The selection of the above-mentioned specific raw materials can further help to ensure the performance of the ultra-high water material formed, but it does not mean that only the above-mentioned corresponding types of raw materials can be used. For example, aluminum-based cement can be aluminate, sulfoaluminate and iron. Aluminates can also be fast-hardening fluoroaluminates, etc. In addition to at least one of aluminum-based cement and Portland cement, the cement can also be hard cements such as phosphate cement; water reducing agents other than polycarboxylate Acid-based water-reducing agents and naphthalene-based water-reducing agents may also be aliphatic water-reducing agents, melamine-based water-reducing agents, fatty acid-based water-reducing agents, and the like. The specific materials selected for the above-mentioned corresponding types are only examples of the embodiments of the present invention, as long as the ultra-high water materials of the corresponding performance can be prepared through the specific ratio of the embodiments of the present invention, other materials of the same type are also included in the embodiments of the present invention. within the scope of protection.

The embodiment of the present invention also provides a preparation method of the above foamed porous ultra-high water material,

Including: according to the mass ratio of cement, alkali metal salt, water reducing agent and dispersant to form a first mixture, mixing foaming agent and foaming agent A to form a second mixture; mixing gypsum, lime and aggregate to form a first mixture Three mixtures; the foaming agent B, the dispersant and the accelerator are mixed to form the fourth mixture;

Then, the first mixture and the second mixture are mixed to form a material; the third mixture and the fourth mixture are mixed to form a second material;

Next, the foamed porous ultra-high water material is formed by mixing the A material and the B material, and the above-mentioned mixing sequence can ensure the formation of the foamed porous ultra-high water material, thereby ensuring that the foamed porous ultra-high water material is formed. material properties.

Secondly, in the whole process of preparing the foamed porous ultra-high water material, the temperature is 20-30° C., and the pressure is normal pressure, that is, 1 atmosphere, or close to one atmosphere, that is, the foamed porous ultra-high water provided by the embodiment of the present invention. The preparation method of the high-water material can be prepared at normal temperature and pressure without heating and pressure, which further reduces the difficulty of preparation and is beneficial to industrial production.

Further, an embodiment of the present invention also provides an application of the above-mentioned foamed porous ultra-high water material as a filling material; the filling material is a filling material used in a coal mining process.

The features and performances of the present invention will be further described in detail below in conjunction with the embodiments.

Example 1

The embodiment of the present invention provides a preparation method of a foamed porous ultra-high water material, comprising:

Preparation A material: 960g sulfoaluminate cement, 10g sodium chloride, 15g polycarboxylate superplasticizer, 15g methyl cellulose were mixed in solid state to obtain the first mixture; 60g tween and 120g ammonium sulfite were dissolved Obtain the second mixture in 5820g water; The first mixture and the second mixture are mixed to obtain a material;

Preparation B: 400g gypsum, 500g lime, 100g fly ash are mixed to obtain the third mixture; 60g aluminum sulfate, 120g hydroxymethyl cellulose, 60g lignin are dissolved in 5760g water to obtain the fourth mixture; the third mixture is material and the fourth mixed material are mixed to obtain material B;

Material A and material B are mixed according to a weight ratio of 1:1 to obtain a foamed porous ultra-high water material.

The temperature of the whole preparation process is 25°C, and the pressure is normal pressure.

Example 2

The embodiment of the present invention provides a preparation method of a foamed porous ultra-high water material, comprising:

Material A: 950g of sulfoaluminate cement, 10g of potassium chloride, 20g of polycarboxylate water-reducing agent, and 20g of hydroxyethyl cellulose were mixed in a solid state to obtain the first mixture; 60g of dodecylbenzenesulfonic acid was mixed Sodium and 120g ammonium bisulfite are dissolved in 5820g water to obtain the second mixture; The first mixture and the second mixture are obtained A material;

Material B: 400g of gypsum, 400g of lime, and 200g of coal gangue are mixed to obtain the third mixture; 60g of alum, 120g of hydroxypropyl cellulose, and 60g of lignin are dissolved in 5760g of water to obtain the fourth mixture; Four mixed materials are mixed to obtain material B;

Material A and material B are mixed according to a weight ratio of 1:1 to obtain a foamed porous ultra-high water material.

The temperature of the whole preparation process is 25°C, and the pressure is normal pressure.

Example 3

The embodiment of the present invention provides a preparation method of a foamed porous ultra-high water material, comprising:

Material A: 980g sulfoaluminate cement, 5g sodium chloride, 5g polycarboxylate superplasticizer, and 10g methylcellulose were mixed in solid state to obtain the first mixture; 60g cetyltrimethyl bromide was mixed Ammonium chloride and 120g sodium bicarbonate are dissolved in 5820g water to obtain the second mixture; The first mixture and the second mixture are obtained A material;

Material B: 450g of gypsum, 450g of lime, and 100g of fly ash are mixed to obtain the third mixture; 60g of polymeric aluminum ferric sulfate, 120g of hydroxyethyl cellulose, and 60g of sodium lignosulfonate are dissolved in 5760g of water to obtain the fourth mixture; The third mixture and the fourth mixture are mixed to obtain material B;

Material A and material B are mixed according to a weight ratio of 1:1 to obtain a foamed porous ultra-high water material.

The temperature of the whole preparation process is 25°C, and the pressure is normal pressure.

Example 4

The embodiment of the present invention provides a preparation method of a foamed porous ultra-high water material, comprising:

Preparation A material: 960g sulfoaluminate cement, 10g sodium chloride, 15g polycarboxylate superplasticizer, 15g methyl cellulose were mixed in solid state to obtain the first mixture; 60g tween and 120g ammonium sulfite were dissolved Obtain the second mixture in 5820g water; The first mixture and the second mixture are mixed to obtain a material;

Preparation B: 400g gypsum, 500g lime, 100g fly ash are mixed to obtain the third mixture; 60g aluminum sulfate, 120g hydroxymethyl cellulose, 60g lignin are dissolved in 5760g water to obtain the fourth mixture; the third mixture is material and the fourth mixed material are mixed to obtain material B;

The A and B materials are mixed according to a weight ratio of 1:2 to obtain a foamed porous ultra-high water material.

The temperature of the whole preparation process was 25°C, and the pressure was normal pressure.

Example 5

The embodiment of the present invention provides a preparation method of a foamed porous ultra-high water material, comprising:

Preparation of material A: 960g sulfoaluminate cement, 10g sodium chloride, 15g polycarboxylate superplasticizer, 15g methyl cellulose were mixed in solid state to obtain the first mixture; 60g tween and 120g ammonium sulfite were dissolved Obtain the second mixture in 14820g water; The first mixture and the second mixture are mixed to obtain a material;

Preparation B: 400g gypsum, 500g lime, 100g fly ash are mixed to obtain the third mixture; 60g aluminum sulfate, 120g hydroxymethyl cellulose, 60g lignin are dissolved in 5760g water to obtain the fourth mixture; the third mixture is material and the fourth mixed material are mixed to obtain material B;

Material A and material B are mixed according to a weight ratio of 1:1 to obtain a foamed porous ultra-high water material.

The temperature of the whole preparation process was 25°C, and the pressure was normal pressure.

Example 6

The embodiment of the present invention provides a preparation method of a foamed porous ultra-high water material, comprising:

Preparation of material A: 960g sulfoaluminate cement, 10g sodium chloride, 15g polycarboxylate superplasticizer, 15g methyl cellulose were mixed in solid state to obtain the first mixture; 60g tween and 120g ammonium sulfite were dissolved Obtain the second mixture in 5820g water; The first mixture and the second mixture are mixed to obtain a material;

Preparation B: 400g gypsum, 500g lime, 100g fly ash are mixed to obtain the third mixture; 60g aluminum sulfate, 120g hydroxymethyl cellulose, 60g lignin are dissolved in 14760g water to obtain the fourth mixture; the third mixture is material and the fourth mixed material are mixed to obtain material B;

Material A and material B are mixed according to a weight ratio of 1:1 to obtain a foamed porous ultra-high water material.

The temperature of the whole preparation process was 25°C, and the pressure was normal pressure.

Comparative Example 1: The ultra-high water material was prepared with reference to the preparation method of Example 1, and the difference from Example 1 was that material A and material B were mixed at a weight ratio of 0.5:1.

Comparative Example 2: The ultra-high water material was prepared with reference to the preparation method of Example 1, and the difference between it and Example 1 was that material A and material B were mixed at a weight ratio of 1:0.5.

Experimental tests were carried out on the ultra-high water materials of Examples 1-6 and Comparative Examples 1-2. The test results are shown in Table 1.

Table 1

As can be seen from Table 1, according to the components and dosages in the present invention, ultra-high water materials with suitable initial setting time, wide initial setting-final setting time interval and high compressive strength can be obtained; increase the water distribution in materials A and B ratio, or reduce the relative ratio of material A and material B, because the balance of flocculation and retardation between material A and material B is destroyed, the initial setting time is prolonged or shortened to varying degrees, and the compressive strength of the material is reduced at the same time.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A foamed porous ultrahigh water material is characterized in that raw materials comprise a material A and a material B in a mass ratio of 1 (1-2);

the raw materials for forming the material A comprise: the first mixture and the second mixture in a mass ratio of 1 (6-15), wherein the raw materials for forming the first mixture comprise the following components in a mass ratio of (95-98): (0.1-1): (0.5-2): (0.1-2) cement, alkali metal salt, water reducing agent and dispersant; the raw materials for forming the second mixture comprise the following components in percentage by mass (0.1-2): (0.5-5) the foaming agent and the foaming agent A;

the raw materials for forming the material B comprise: a third mixed material and a fourth mixed material with the mass ratio of 1 (6-15), wherein the raw materials for forming the third mixed material comprise the following components in mass ratio of (10-50): (10-50): (10-40) gypsum, lime and aggregate; the raw materials for forming the fourth mixture comprise the following components in percentage by mass (0.1-2): (0.5-10): (0.1-5) a foaming agent B, a dispersing agent and an accelerating agent.

2. The foamed porous ultrahigh water material of claim 1 wherein the raw materials forming the second mix and the fourth mix each further comprise water;

preferably, the mass ratio of the foaming agent, the foaming agent A and the water is (0.1-2): (0.5-5): (93-99);

preferably, the mass ratio of the foaming agent B, the dispersing agent, the accelerating agent and the water is (0.1-2): (0.5-10): (0.1-5): (90-99).

3. The foamed porous ultrahigh water material of claim 1 or 2 wherein the cement comprises at least one of an aluminum based cement and a portland cement;

preferably, the aluminium-based cement comprises at least one of aluminate, sulphoaluminate and ferroaluminate.

4. The foamed porous ultrahigh water material of claim 1 or 2 wherein the alkali metal salt comprises at least one of a sodium salt and a potassium salt;

preferably, the sodium salt comprises at least one of sodium chloride, sodium sulfate and sodium nitrate;

preferably, the potassium salt comprises at least one of potassium chloride, potassium sulfate, and potassium sulfate.

5. The foamed porous ultrahigh water material according to claim 1 or 2, characterized in that the water reducing agent comprises at least one of a polycarboxylic acid-based water reducing agent and a naphthalene-based water reducing agent;

preferably, the dispersant comprises a cellulose ether-based dispersant;

preferably, the cellulose ether-based dispersant comprises at least one of methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose and hydroxypropylcellulose.

6. The foamed porous ultrahigh water material of claim 1 or 2 wherein the foaming agent comprises at least one of a sodium sulfonate surfactant, a quaternary ammonium surfactant, a tween and a span;

preferably, the sodium sulfonate surfactant comprises sodium dodecyl sulfonate and sodium dodecyl benzene sulfonate, and the quaternary ammonium surfactant comprises cetyl trimethyl ammonium chloride and cetyl trimethyl ammonium bromide.

7. The foamed porous ultrahigh water material according to claim 1 or 2, wherein the foaming agent a comprises at least one of sulfite, bicarbonate, carbonate, metal powder, oxidant and carbide;

preferably, the foaming agent a comprises at least one of sodium sulfite, potassium sulfite, ammonium sulfite, sodium bisulfite, potassium bisulfite, ammonium bisulfite, potassium bicarbonate, sodium bicarbonate, potassium carbonate, sodium carbonate, hydrogen peroxide, aluminum powder, iron powder, manganese powder, zinc powder and calcium carbide.

8. The foamed porous ultrahigh water material of claim 1 or 2 wherein the gypsum comprises at least one of pure gypsum, desulfurized gypsum, phosphogypsum and fluorgypsum;

preferably, the aggregate comprises at least one of fly ash, coal gangue and inorganic construction solid waste;

the foam stabilizer B comprises at least one of an aluminum compound and a manganese compound;

preferably, the foaming agent B comprises at least one of aluminum sulfate, aluminum nitrate, aluminum chloride, alum, polyaluminum sulfate, polyaluminum chloride, polyaluminum ferric sulfate, manganese dioxide and manganese oxide ore;

preferably, the accelerator comprises a lignin-based compound;

preferably, the accelerator comprises at least one of lignin and sodium lignosulfonate.

9. A method for preparing the foamed porous ultrahigh water material of claim 1, comprising: forming cement, alkali metal salt, a water reducing agent and a dispersing agent into a first mixture according to the mass ratio,

mixing a foaming agent and a foaming agent A to form a second mixture;

mixing gypsum, lime and aggregate to form a third mixture;

mixing the foaming agent B, the dispersing agent and the accelerating agent to form a fourth mixture;

then, mixing the first mixture and the second mixture to form a first mixture; mixing the third mixed material and the fourth mixed material to form a material B;

then, mixing the material A and the material B to form the foamed porous ultrahigh water material;

preferably, the temperature in the process of preparing the foamed porous ultrahigh water material is 20-30 ℃.

10. Use of the foamed porous ultra-high water material of claim 1 as a filler material;

preferably, the filler material is a filler material used in coal mining processes.