WO1994014721A1

WO1994014721A1 - Refractory insulating material

Info

Publication number: WO1994014721A1
Application number: PCT/JP1992/001683
Authority: WO
Inventors: Chong Hwan Chu
Original assignee: Chong Hwan Chu
Priority date: 1992-12-22
Filing date: 1992-12-22
Publication date: 1994-07-07
Also published as: AU3172093A; CN1106772A; KR960001432B1; KR940014231A

Abstract

A refractory insulating material which is tough and excellent in heat-insulating and fire-resisting properties is produced by mixing a first material containing silicon dioxide, calcium sulfate, aluminum oxide, etc., with a second material containing vegetable fibers, such as cellulose fiber, or chemical fibers, such as polyacrylonitrile fiber, and further with water glass and drying the mixture to solidify the same without the necessity for melting at high temperature. It is preferable that the first material contains silicon dioxide, calcium sulfate and aluminum oxide in a total of at least 40 % by weight. Also it is preferable that the refractory insulating material be composed of, before drying and solidification, 60.0-88.5 wt.% of the first material, 1.5-20.0 wt.% ofthe second material and 10.0-20.0 wt.% of the water glass. The water glass is either an aqueous solution of sodium silicate with a density of 1,255-1,710 kg/m3 at 25 °C or an aqueous solution of potassium silicate with a density of 1,250-1,420 kg/m3 at 25 °C. The reuse of waste material containing a large amount of silicon dioxide, gypsum and the like, such as powdery slag discharged from ironworks, powdery stone from stoneworks, or gypsum-containing waste from phosphatic fertilizer plants, as the first material will serve as a means for treating waste material.

Description

Description Fireproof and thermal insulation [Technical field]

The present invention relates to a refractory / heat insulating material that can be used, for example, as a refractory / heat insulating material.

[Background technology]

Conventionally, various materials are known as materials having strong and heat insulating properties. For example, concrete is known as a strong material, and calcium silicate plate, stone threat plate, asbestos (asbestos), glass fiber, rock wool, and the like are used as refractory materials. , Slag wool, broadly defined ceramic finos (silica fins, ceramic fins, alumina fins, zirconia ﬁ bers, etc.) and monocoat (M0N0K0TE) available from WR Grace. There was something to call.

Concrete is rather each is well known, although cement mix sand (Si0 ₂₎ and stones (Si0 ₂₎ is made by adding water, has the disadvantage of poor fire resistance or too heavy.

Calcium silicate plate and stone threatening plate are made by mixing cement and stone threatening with water and applying heat. However, stone threatening plate has a higher calcium content than calcium calcium silicate plate. Can be These calcium silicate plates and stone threat plates have the disadvantage that they are easily broken and have insufficient hardness, and they also have a high water absorption.

Asbestos is a natural mineral fiber. Man-made mineral fibers (mineral fiber) such as glass fiber and rock wool (rock wool), and ceramic fiber in a broad sense, are manufactured by the melt fiberization method using high heat. Is done. Natural and man-made mineral fibers are considered to cause cancer when absorbed into the human body, and are being banned in various countries as a source of pollution.

Monocoats are known to consist of a mixture of cellulose finok and vermiculite, which is hardened with some kind of adhesive.

[Disclosure of the Invention]

An object of the present invention is to provide a fire-resistant and heat-insulating material which is excellent in heat insulation and fire resistance and is mechanically strong.

In order to achieve this object, according to one embodiment of the present invention, there is provided a powder containing at least 30% by weight of silicon, a silicon compound, calcium, a calcium compound, an aluminum-aluminum compound, or a mixture thereof. The weight ratio of the material 1 is in the range of 0 to 95% of the whole, the overlap ratio of the second material including the fiber is in the range of 0.1 to 90% of the whole, and the weight of the water glass is The ratio is in the range of 3 to 80% of the whole, and after being mixed so as to be 100% in total, the solidified fireproof and heat insulating material is provided.

Preferably, the first material contains at least 40% by weight of the silicon, the silicon compound, the calcium or the calcium compound, the aluminum or the aluminum compound, or a mixture thereof. I have.

Further, according to another embodiment of the present invention, the silicon-containing compound contains at least 5% by weight of a silicon-to-silicon compound, and calcium or a calcium compound and Z or aluminum or aluminum are contained in the silicon or the silicon compound. The weight ratio of the first material containing 30% or more including the compound is in the range of 0 to 95% of the whole, and the weight i ratio of the second material including the fiber is 0.1 to 100% of the whole. It is in the range of 90%, the weight ratio of water glass is in the range of 3 ~ 80% of the whole, and it is mixed so that the total is 100% Thereafter, the dried and solidified refractory and heat insulating material is provided.

Preferably, the first material contains not less than 10% by weight of the silicon or the silicon compound, and a calcium-calcium compound and / or an aluminum or a silicon compound. It contains more than 40% including aluminum compounds.

In the above one embodiment and the above another embodiment of the present invention, specifically, the silicon or silicon compound contained in the first material contains silicon dioxide, and the calcium or calcium compound is The aluminum or aluminum compound contains aluminum oxide; and the second material may contain vegetable fiber, chemical fiber or mineral fiber, or a mixture thereof. .

According to a preferred embodiment of the present invention, the second material includes cellulose fiber and Z or polyacrylonitrile fiber, and the water glass has a density at 125C of 1255-: L71. An aqueous solution of sodium silicate in the range of 0 K g / m ³ or a density of sodium silicate in the range of 1250 to: L 420 K g / m ^{3 in} the range of 420 K g / m ³ It is an aqueous solution.

According to a further preferred aspect of the present invention, the weight ratio of the first material is in the range of 60.0 to 88.5% of the whole, and the weight ratio of the second material including the fiber is 1.5 to 20.0% of the whole. %, And the weight ratio of the water glass is in the range of 10.0 to 20.0% of the whole.

In preferred correct aspect of the present invention, Kei arsenide, Kei-containing compounds such as silicon dioxide (Si0 _2), such as calcium and calcium compounds such as calcium sulfate (CAS0 _4), or aluminum oxide (A 1 ₂ 0 ₃₎ Al The first material that may contain or contain a mixture of a minimum aluminum compound or the like may include natural plant fiber such as cellulose fiber and / or artificial fiber such as polyacrylnitrile fiber. The first material contains the fibers contained in the second material by mixing the second material containing the chemical fibers and / or mineral fibers of the above, and then mixing and mixing water glass to form a dough. It is thought to work as a binder for silicon compounds, calcium compounds, aluminum compounds, etc., and then solidified by drying, without going through a high heat treatment process or melting process. As a result, a strong fireproof and heat insulating material can be obtained.

The first materials are silicon dioxide and stone, such as slag powder discharged from steelworks, stone powder discharged from stone factories, and stone threat-based materials discharged from phosphate fertilizer plants. Reusing waste that contains a lot of threats and aluminum oxide can also be a part of waste management.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.

The present invention basically Kei Motoya Kei-containing compounds such as silicon dioxide (S i 0 _2>, calcium and calcium compounds such as calcium sulfate (CAS0 _4), or aluminum oxide (A 1 ₂ 0 _3> etc. A second material containing vegetable fibers and / or chemical fibers and / or mineral fibers mixed with a first material that can contain or contain a mixture of aluminum aluminum compounds of the present invention, Furthermore, water glass is mixed and kneaded, and then dried to solidify, and to obtain a strong fire-resistant and heat-insulating material without going through a high heat treatment process or a melting process. As the first material, for example, limestone powder, cement, slag powder, natural stone powder, glass powder, stone black powder, perlite, etc. are selected, and as a natural mineral, vermicilite is used. And kaolin Is selected. These materials t This silicon dioxide (S i 0 ₂₎ and, stone脅質namely calcium sulfate (CAS0 ₄₎ and aluminum oxide (A 1 ₂ 0 _3), but such is included, the present invention In order to use it, the first material is silicon or silicon compound, It is preferable that the weight of the first material is at least 30%, preferably at least 40%, by weight of calcium or calcium compound or aluminum or aluminum compound, or a mixture thereof. Good to be included. If it is less than 30%, it is desirable to supplement it so that it becomes 30% or more, preferably 40% or more. The reason is that if it is less than 30%, the expected effect cannot be expected. If these materials show acidity or alkalinity, they should be neutralized before use.

Examples of the second material containing fibers include natural fibers such as cellulose fiber cotton and artificial fibers such as polyacrylnidol fiber. Further, glass fibers, mineral fibers such as rock wool, and ceramic fibers in a broad sense can be used. A preferred second material for practicing the present invention is a cellulose fiber or a polyacrylonitrile fiber because it is inexpensive and does not cause pollution. Cellulose fiber is generally known as crushed newsprint or pulp, or crushed and then treated with a flame-retardant material. Not be. When polyacrylonitrile fiber is used, it is considered to be inferior to cellulose fiber because some toxic gas is generated during the combustion process.

Water glass, an aqueous solution der Luca compounds namely Kei acid sodium with oxidized sodium and silicon dioxide _{_{(S i 0 2 ■ Na 2}} 0 is also properly Na ₂ S i 0 _3), also properly is a silicon dioxide an aqueous solution of a compound namely potassium Ke i acid and potassium oxide _{_{(S i 0 2 · K 2}} 0 or K ₂ S i 0 _3). Tables 1 and 2 below show two examples of the composition of water glass, which is an aqueous solution of sodium sodium silicate, and Table 3 shows examples of the composition of water glass, which is an aqueous solution of potassium silicate. deep . In this embodiment, the water glass From Tables 1, 2 and 3 below, it can be seen that in the case of an aqueous solution of sodium silicate, the density at 20 ° C. is 1255, 1710 Kg / m ³ , and the viscosity o O

There shall from 10 mPa's at least 10,000 mPa's, also density 1250 in 2 CTC case of an aqueous solution of potassium Kei acid ', Ri 1420 Kg / m ³ der, viscosity is 20: With the use of 1050 things TNPA's I do.

Ml.

20 ° Contact grade your heavy i ratio of 20 hand C Keru _{_{density% Si0 2% Na 2 0 Si0}} 2 / Na 2 0 takes viscosity

Kg / rn ³ rnFa * s

JM 1416 29.6 9.2 3.22 625

No. 9 1404 28.7 '8.9 3.22 240

F 1392 28.0 8.7 3.22 150

20WW 1392 28.0 8.7 3.22 150

No. 14 1488 31.7 11.1 2.87 900

30WW 1416 27.0 10.6 2.56 60

No.16 1560 33.1 13.9 2.38 700

1500 29.3 13.3 2.20 210

1524 28.5 15.0 1.90 340

2.0 1584 31.5 15.8 2.00 1300

1.6 1596 28.6 17.9 1.60 1000

A

Table 2

20 ° Contact grade your weight ratio 2 (TC in C Keru _{_{density% Si0 2% Na 2 0 Si0}} 2 / Na 2 0 takes viscosity

36/38> H <1345-1350 25.8-26.8 7.8-8.2 2.2 3.26-3.32 35, 55

37/40 1345-1355 26.6-27..0 7.-8.2.3 3.30-3.40 50, 100

37/40> PE Ku 1365-1375 27.2-28 .2 8, .2- 8.6 3.30-3.40 100-200

40/42 1390-1405 29.0-29. .8 8. .6--9. .0 3.30-3.40 400- 600

43/45 1435-1460 31.1-32..1, 10,, 0-40 .6 3.02-3.10 800-1500

48/50> HF <1490-1505 31.0-32. .0 11, .8- -12..2 2.58-2.62 350-450

48/50 1505-1520 32.8-33 .8 11, .9- 42.5 2.70-2.80 1500-2500

50/52> Nuclasi 1 <1545-1560 33.0-34..0 13..4 ''14 ..1 2.37-2.42 1400-2000

58/60 1690-1710 36.0-37, .0 17, .8-Λ, .4 2.00-2.06 20 ° Contact grade your weight ratio 20 "C to C Keru _{_{Density% SiO:% K 2 0 Si0}} 2 / K 2 0 takes viscous

One Kg / m ³ One rnPa * s

28/30 1250-1260 20.4 21.4 7.8- 8.3 2.50-2.60 20- 70 ¾ 1320-1330 23.4- -24.1 10.5- 11.0 2.20-2.24 35

35> WW 1320-1330 23.6- • 24.4 10.2- 10.8 2.27-2.30 170- 200

36> M〇 1330-1340 24.2- • 25.0 10.9-11.4 2.20-2.24 110- 130 40 1380-1395 26.4- 27.3 12.6- 13.1 2.08-2.12 850-1050 / 251;

42> WD K 1400-1415 26.7-27.5 13.3- 14.0 1.98-2.04 200- 300 Mors l 1 H 1410-1420 26.2-27.0 14.1-14.9 1.80-1.88 40, 50

Mix the first material and the second material, add the above water glass, knead the material, and then dry and solidify the material, which has high heat insulation and high fire resistance. It is excellent and strong because the mixture of the first material and the second material is mixed with water glass to form a dough and then dried to form a second material such as cellulose fiber. It is considered that the fibers contained in the polyacrylonitrile fiber serve to bind together the silicon dioxide, calcium sulfate (stone threat) and aluminum oxide contained in the first material and the water glass.

As the first material described above, a silicon-silicon compound such as silicon dioxide, a calcium or calcium compound such as calcium sulfate, an aluminum or aluminum compound such as aluminum oxide, or a mixture thereof. Containing at least 30% by weight of the first material,

As the second material containing fibers, natural fibers such as cellulose fibers, artificial fibers such as boria cryl nitrile fiber, mineral fibers, and ceramic fibers in a broad sense, or a mixture thereof are used. ,

As the water glass, in the case of aqueous solution of sodium silicate Definitive ones density of 1255~1710 Kg / m ^3, also the case of Kei oxidation helium in aqueous solution density at 2 CTC is and this be used those 1250,1420 K g / m ^3, according to the invention When making 1000 fireproof and heat insulating materials, the mixing ratio of each material is as follows in the overlap ratio. First material 0-950 Kg, preferably 600-885 Kg

Second material l, 900 Ks preferably 15-200 Kg

Water glass 30, 800 Kg, preferably 100-200 Kg Within these ranges, the total weight of each material is distributed so as to be 1000, and the material is dried to form a fireproof and heat insulating material.

Note that, depending on the application, it is also possible to simply use the second material containing fibers mixed with water glass and dried without using the first material. In this case, the fibers contained in the second material work to bind the silicon dioxide contained in the water glass, and a fire-resistant material suitable for the intended use can be obtained. . In the above mixing ratio table, the first material has a value of 0 to 950 Kg and the lowest value is 0, which means this. If the first material is not used, the amount of water glass should be increased accordingly. In particular, when cellulose fiber is used as the second material, the cellulose fiber is known as a heat insulating material. Silicon also works to increase the fire resistance of the cellulose fiber, and it is an effective fire insulation depending on the purpose of use.

In the following, the manufacturing process for making a fireproof and heat insulating material for a specific preferred embodiment will be described.

The first material is limestone powder, cement, and slag, as described above. Powder, natural stone powder, glass powder, stone powder, perlite, etc. are selected, and natural minerals such as bamboo and tokaolin are selected as natural minerals. It contains a large amount of silicon dioxide, stone threat, that is, calcium sulfate, aluminum oxide, etc., such as slag powder, stone powder discharged from stone factories, and stone threat-based materials discharged from phosphate fertilizer plants, etc. Reusing waste can be a very advantageous measure, as it can be a part of waste management. If, for example, slag powder is used as the first material, the slag powder should be rich in silicon dioxide and stone threat, i.e. calcium sulphate, but should contain at least 5% of silicon dioxide. Is desirable, and, preferably, 10% or more is contained. Further, it is desirable that the total content be 30% or more, preferably 40% or more, including silicon dioxide, calcium sulfate and aluminum oxide. If it is less than 5%, it must be replenished so that it is at least 5%, preferably at least 10%, or less than 30% in total. It is desirable to replenish so that it becomes 30% or more, preferably 40% or more. If these materials show acidic or alkaline properties, they should be used after neutralization.

Therefore, hereinafter, as a first material, a factory containing at least 10% of silicon dioxide and at least 40% of silicon dioxide and stone threat, that is, calcium sulfate and aluminum oxide in total, together utilizing slag powder discharged from, and the second material comprising fibers cellulose Sufaiba (typical has the formula C ₆ H _s 0 _5, cellulose content ratio 95% or more, ash 0.5% at the maximum, PH = 6 soil 1, average fiber concentration of 15m or more, average fiber length of 30 or more, but not limited to this), and use water glass. For sodium silicate, 20. What density of 1,255 to 1,710 Kg / m ³ in C, The 2 ° for calcium silicate. The manufacturing process will be described by using an example in which a density of 1250 to 1420 Kg / rn in C is used to make a fireproof and heat insulating material of about 1 ton.

(1) First, as the first stage,

Collect the slag powder from the factory and make it into powder if it is not already in powder form. Measure the content of silicon dioxide, calcium sulfate, and aluminum oxide. If the content of silicon dioxide is less than 10%, replenish it to 10% or more.Also, add silicon dioxide, calcium sulfate, and aluminum oxide. If the total content of the rubber is less than 40%, replenish with silicon dioxide, sulfuric acid, calcium or aluminum oxide, preferably silicon dioxide, so as to be 40% or more. Check the pH and neutralize it if it shows acidic or alkaline.

(2) As the second stage,

The powdered slag powder obtained in the first step is taken out by 885 Ks, and 885 Kg of the slag powder is mixed with 15 Kg of the same cellulose powder to make a mixture of 900 Kg in total.

(3) As the third stage,

2 0. Water glass 100K _g density of Kei acid sodium was above 1255,1710 Kg / rn ³ in C, kneaded and mixed with a mixture of 900 K ₈ obtained in the second step, the dough-like body 1 ton.

(4) As the fourth stage,

The 1-ton dough obtained in the third step is put into a mold and dried to form a mold, or sprayed on a target object (steel frame, wooden board, etc.). When put into a mold and dried, 1 ton of the dough contains a large amount of water, so depending on the thickness of the mold, etc., a substance that accelerates the drying process before putting in the mold As such, a certain type of solidification accelerator may be mixed. Examples of solidification accelerators include Geodol in Denmark. It is known under the trade name of Geodur (Geodol stock solution is mixed with the above dough at 0 to 5% by overlapping ratio, and cement is 0 to 10% May be mixed). In the case of spraying, a non-combustible adhesive may be mixed to reinforce the adhesive strength.

(5) As the fifth stage,

In the case of molding by drying in a mold, the method of drying is to leave it naturally at room temperature or to apply some heat (70 ° C to 200 ° C). If solidified by drying, it is removed from the mold as a finished product and used for use. The finished product is strong and has excellent heat insulation and fire resistance. In the above embodiment,

Slag powder 885Ks

Cellulose finoku 15kg

Water glass (sodium silicate) lOOKg

It is the case where it is mixed to 1 ton and solidified, and the physical properties are as follows.

Compressive strength 60 Kg / crn ² or more (after drying at 80 ° C)

Fire resistance 1,200 ° C for 30 minutes

Thermal conductivity Average temperature 350 ° C ± 10. C [Kcal / rn-h-t;] 0.17 or less Heat shrinkage rate not exceeding 2% Temperature 1,20 (TC Next, in the same manufacturing process as the second embodiment,

Slag flour 600Kg

Cellulose fiber 200Kg

Water glass (sodium silicate) 200Kg The physical properties when solidified to 1 ton by mixing are as follows.

Compressive strength 10 kg / cm ² or more (after drying at 80C)

Fire resistance 70 (TC 30 minutes

Thermal conductivity Average temperature 350 ° C ± 10 ° C [Kcal / mht;] 0.14 or less Heat shrinkage temperature not exceeding 2% 700 ° C In general, the harder the mixing ratio of cellulose / fiber, the harder The temperature decreases, the thermal conductivity decreases, the fire resistance decreases, and the ripening shrinkage increases. As for the water glass, the use of potassium silicate can produce a higher fire resistance as compared with the case of using sodium silicate, but the use of potassium silicate But expensive.

In the above-described embodiment, the case where the cellulose fiber is used as the second material containing the fiber has been described. However, instead of the cell-mouth fiber, other vegetable fiber or chemical fiber such as polyacrylonitrile fiber or fiber is used. Mineral fibers such as neural fibers or a mixture thereof can also be used. The mixing ratio and the like when using them are almost the same as those described for the cellulose fiber.

Further, in the above-described embodiment, the case where the mixture of the first material and the second material is kneaded with a solution of water glass has been described. However, since water glass may exist as a powder, It is also possible to mix the material 2 and the powder of water glass, add water thereto, and knead the mixture. However, water glass powder is obtained by spraying an aqueous solution and is much more expensive than liquid, so it is advantageous to use an aqueous solution of water glass. To return the powder to an aqueous solution, put 5 powders of sodium silicate or potassium silicate in 1 lb of water at room temperature (5% solution 25 to 30 minutes, mix well to obtain water Return to the glass solution. Further, in the above-described embodiment, a preferred manufacturing process of a fireproof and heat insulating material was described as a part of the use of waste, but the idea of the present invention is to use a cellulose fiber polyacrylonitrile using water glass. The purpose is to solidify silicon compounds, calcium compounds, aluminum compounds, etc. with fibers such as rilfiber. By simply mixing the raw materials directly, it is possible to produce a strong and excellent refractory insulation material, which can be used in certain applications.

In the above embodiment, the first material is a material containing silicon dioxide, calcium sulfate, and aluminum oxide. However, the first material is not limited to silicon dioxide, calcium sulfate, and aluminum oxide as long as it has a solidifying effect. In general, it may be a material containing silicon or a silicon compound, calcium or a calcium compound, and aluminum or an aluminum compound.

As in the above-described embodiment of the present invention, waste from a factory is used as the first material, and cellulose fiber polyacrylonitrile is used as the second material containing fibers. By using fibers, etc., it is possible to use non-flammable materials while utilizing the heat insulation properties of cellulose fibers and polyacrylonitrile fibers, and to obtain an excellent fire-resistant and heat-insulating material that can withstand high temperatures without being polluted. In addition, there is the effect that industrial waste can be effectively used, the manufacturing cost is low, the use of heat and the like can be avoided except for the drying process, and the manufacturing process is simple.

[Industrial applicability]

The fire-resistant and heat-insulating materials according to the present invention can be used as a substitute for any asbestos-containing building materials and materials, and can also be used as a substitute for any other fire-resistant and heat-insulating materials. Yes, especially It can be used as a lightweight fire and heat insulator required for high-rise buildings. In addition, it can be used for fireproof and heat-insulating interior and exterior materials (filler between boards, sprayed fireproof covering materials, various tiles, furnace walls and lids and doors, various heat-insulating materials, etc.). It can be. The details are as follows.

Use 1

When used as a heat insulating material, it can be used for brake and lining of automobiles. Conventionally, asbestos has been used as the brake lining, but this has become unusable due to pollution, and the fire-resistant and heat-insulating material according to the present invention can be used as a substitute. it can.

Use 2

As an application when used as thermal insulation, it can be used as an alternative to stone threatening plates used for partition walls and ceiling panels. Gypsum plates have excellent heat insulation properties, but have the drawback that they are easily broken and have insufficient hardness. In that respect, the fireproof and heat-insulating material of the present invention has excellent heat insulating properties and excellent mechanical strength. Further, the stone threatening board is not suitable for use as an outer wall because it has water absorbency, but the fire-resistant and heat-insulating material of the present invention has a low water absorbability and can be used for an outer wall.

Use 3

By spraying on a steel structure, it can also be used as a fireproof covering material.

Use 4

It can be used as a fire-resistant and heat-insulating material by being inserted between boards (panels).

Use 5

Can be used for floors that require fire resistance. Use 6

Can be used for sidewalk blocks that require fire resistance.

Use 7

It can be used as a matte surface lining material or bakatsua material for blast furnaces.

Claims

The scope of the claims

(1) The weight ratio of the first material containing 30% or more by weight of silicon or a silicon compound, calcium or a calcium compound, or aluminum or an aluminum compound, or a mixture thereof is 0 to 9%. The weight ratio of the second material including fibers is in the range of 0.1 to 90%, the weight ratio of water glass is in the range of 3 to 80%, Fire resistant and heat insulating material that has been mixed to 100% in total and then dried and solidified.

(2) The first material contains at least 40% by weight of the silicon, the silicon compound, the calcium calcium compound, the aluminum or the aluminum compound, or a mixture thereof. The fire-resistant and heat-insulating material according to claim 1.

(3) The silicon or silicon compound contained in the first material contains silicon dioxide, the calcium or calcium compound contains calcium sulfate, and the aluminum or aluminum compound is aluminum oxide. 3. The fire-resistant and heat-insulating material according to claim 1 or 2, wherein the heat-resistant and heat-insulating material includes a heat-resistant material.

(4) The fire-resistant and heat-insulating material according to any one of claims 1 to 3, wherein the second material contains vegetable fiber, chemical fiber or mineral fiber, or a mixture thereof.

(5) The fire-resistant and heat-insulating material according to any one of Claims 1 to 4, wherein the second material includes cellulose fiber and / or polyacrylnitrile fiber.

(6) the water glass is an aqueous solution of Kei acid isocyanatomethyl Riumu 2 0 ° density definitive to C is in the range of 1 2 5 5~ 1 Ί 1 0 K g / 'm 3 according range囲第one of Or a fireproof or heat-insulating material according to any one of the preceding items.

(7) the water glass, the claims you Keru density 2 CTC be an aqueous solution of Kei acid Kariumu is in the range of 1 2 5 0~ 1 4 2 0 K g Z m 3 A fireproof or heat-insulating material according to any one of Items 1 to 5.

(8) The fire-resistant and heat-insulating material according to any one of claims 1 to 7, wherein a weight ratio of the first material is in a range of 60.0 to 88.5% of the whole.

(9) The fire-resistant heat insulating material according to any one of claims 1 to 8, wherein a weight ratio of the second material containing fibers is in a range of 1.5 to 20.0% of the whole.

(10) The fire and heat insulating material according to any one of claims 1 to 9, wherein a weight ratio of the water glass is in a range of 10.0 to 20.0% of the whole.

(11) The first type containing not less than 5% of silicon or a silicon compound by weight and containing not less than 30% of the silicon compound including calcium, calcium compound, Z or aluminum or aluminum compound. The weight ratio of the material is in the range of 0 to 95% of the whole, the weight ratio of the second material including the fiber is in the range of 0.1 to 90% of the whole, and the weight ratio of water glass is 3 to 80 of the whole. %, And after being mixed to a total of 100%, dried and solidified for refractory and thermal insulation.

(12) The first material contains at least 10% by weight of the silicon / silicon compound and a calcium / calcium compound and Z or aluminum or aluminum oxide in the silicon or silicon compound. 11. The fire-insulating material according to claim 11, which contains 40% or more including the compound.

(13) The silicon or silicon compound contained in the first material contains silicon dioxide, the calcium or calcium compound contains calcium sulfate, and the aluminum or aluminum compound contains aluminum oxide. Fireproof / cutoff according to claim 11 or 12. Heat material.

(14) The fire-resistant and heat-insulating material according to any one of claims 11 to 13, wherein the second material includes a vegetable fiber, a chemical fiber, a mineral fiber, or a mixture thereof.

(15) The fire-resistant and heat-insulating material according to any one of claims 11 to 14, wherein the second material includes a cellulose fiber and / or a polyacrylonitrile fiber.

(1 6) the water glass is an aqueous solution of Kei acid isocyanatomethyl Riumu 2 0 ° range first first term to the first 5 claims density at C is in the range of 1 2 5 5~ 1 7 1 OK gm 3 Fire-resistant and heat-insulating materials according to any of the above items.

(1 7) the water glass is 1 1 wherein range of claims density definitive in at there 2 0 with an aqueous solution of potassium Kei acid is in the range of 1 2 5 0~ 1 4 2 0 K g Zm 3囲第to the 1 Fire-resistant and heat-insulating materials according to any one of the items 5).

(18) The fire-insulating material according to any one of claims 11 to 17, wherein the weight ratio of the first material is in a range of 60.0 to 88.5% of the whole. .

(19) The refractory according to any one of claims 11 to 18, wherein the weight i ratio of the second material containing fibers is in the range of 1.5 to 20.0% of the whole. Insulation.

(20) The fireproof material according to any one of claims 11 to 19, wherein the weight i ratio of the water glass is in the range of 10.0 to 20.0% of the whole.