CN107663086A - A kind of clay insulating refractory block NG125 0.8 and preparation method thereof - Google Patents

A kind of clay insulating refractory block NG125 0.8 and preparation method thereof Download PDF

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CN107663086A
CN107663086A CN201610606607.3A CN201610606607A CN107663086A CN 107663086 A CN107663086 A CN 107663086A CN 201610606607 A CN201610606607 A CN 201610606607A CN 107663086 A CN107663086 A CN 107663086A
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parts
raw material
mesh
refractory block
insulating refractory
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CN107663086B (en
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吕风雷
吕科利
苗承阳
段阳阳
赵更金
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Lianyuan Jiyuan Furnace Industry Co Ltd
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    • C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
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    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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Abstract

A kind of clay insulating refractory block NG125 0.8 and preparation method thereof, is related to refractory material manufacturing technology field, and the clay insulating refractory block is made up of the raw material of following parts by weight：20 40 parts of closed perlite, 10 20 parts of mixed powder, 10 15 parts of kaolin, 8 12 parts of high alumina superfine powder, 15 25 parts of bauxite, 13 16 parts of water.The raw material of the present invention uses the raw material of high refractoriness, and clay insulating refractory block NG125 0.8 is made by dispensing, batch mixing, base, firing etc. according to a certain percentage in raw material, this refractory brick production cost is low, cold crushing strength is high, thermal conductivity factor is small, and the permanent line changing value of bulk density, heating-up temperature and soaking time is within value range as defined in GB/T3994 2013.

Description

A kind of clay insulating refractory block NG125-0.8 and preparation method thereof
Technical field
The present invention relates to refractory material manufacturing technology field, more particularly to a kind of clay insulating refractory block NG125-0.8 And preparation method thereof.
Background technology
The production technology of clay insulating refractory block, the method that the country generally uses is the half-dried method of forming, due to each production Business is raw materials used, the difference and the difference of high temperature firing temperature and soaking time of material, and the product of 96% manufacturer, heating is forever Long Linear change rate index is unqualified（GB/T3994-2013 criterions are not reached）.The main reason for causing such a situation be Firing temperature is not up to the heating permanent line transformation temperature or soaking time deficiency at this temperature of insulating brick, and finished product detection When to be incubated 12h at an established temperature, if detection temperature and soaking time be higher than product firing temperature and soaking time, The heating permanent line change increase of insulating brick just occurs, particularly shrinkage factor increases, so as to not reach the technical indicator of national standard Requirement.
Thus want that the permanent Linear change rate of heating of insulating brick is qualified, just have to improve insulating brick firing temperature and Soaking time at such a temperature, it could not shrink under defined high temperature firing temperature and heat-retaining condition or shrinkage value be small, no Deformation, finally meet that national standard heats the index request of permanent Linear change rate.
The content of the invention
The present invention is in order to solve the shortcomings that above-mentioned prior art, there is provided a kind of clay insulating refractory block NG125-0.8 And preparation method thereof, the permanent line change of finished bricks bulk density, heating-up temperature and soaking time that the preparation method is produced Value can be within value range as defined in GB/T3994-2013, and its cold crushing strength and thermal conductivity factor index can reach state Mark standard.
What the present invention was realized in：A kind of clay insulating refractory block NG125-0.8, by the raw material group of following parts by weight Into：Closed perlite 20-40 parts, mixed powder 10-20 parts, kaolin 10-15 parts, high alumina superfine powder 8-12 parts, bauxite 15-25 parts, water 13-16 parts.
The aluminum oxide that active ingredient in described mixed powder is 55%, 8% silica, 1.4% iron oxide, 26% Calcium oxide, remaining is impurity.
Described closed pore pearl powder granularity is less than 1.2mm, and mixed powder is 260 mesh, and kaolin is 180 mesh, and high alumina is ultra-fine Powder is 600 mesh, and bauxite is 180 mesh.
A kind of described clay insulating refractory block NG125-0.8 preparation method, comprises the following steps：（1）By raw material Mix in proportion, be transported to mixing and blending machine, material stock storehouse is entered after mixing；（2）The raw material mixed in material stock storehouse enters It is molded in brick machine, the pressure of brick machine is 80 tons；（3）Compressing brick is transported in tunnel cave and fires 5-6h, kilneye Temperature is 60 DEG C, and kiln temperature is 1000 DEG C -1150 DEG C；（4）Finished product selection vanning storage.
Relative to prior art, the beneficial effects of the invention are as follows：
The raw material of the present invention uses the raw material of high refractoriness, and by raw material according to a certain percentage by dispensing, batch mixing, base, burning Clay insulating refractory block NG125-0.8 is made in system etc., and this refractory brick production cost is low, and cold crushing strength is high, heat conduction system Number is small, the permanent line changing value of bulk density, heating-up temperature and soaking time value range as defined in GB/T3994-2013 with It is interior.
Embodiment
Embodiment 1
A kind of clay insulating refractory block NG125-0.8, is made up of the raw material of following parts by weight：Closed perlite 20-40 parts, mix Close powder 10-20 parts, kaolin 10-15 parts, high alumina superfine powder 8-12 parts, bauxite 15-25 parts, water 13-16 parts.
The aluminum oxide that active ingredient in described mixed powder is 55%, 8% silica, 1.4% iron oxide, 26% Calcium oxide, remaining is impurity.
Described closed pore pearl powder granularity is less than 1.2mm, and mixed powder is 260 mesh, and kaolin is 180 mesh, and high alumina is ultra-fine Powder is 600 mesh, and bauxite is 180 mesh.
A kind of described clay insulating refractory block NG125-0.8 preparation method, comprises the following steps：（1）By raw material Mix in proportion, be transported to mixing and blending machine, material stock storehouse is entered after mixing；（2）The raw material mixed in material stock storehouse enters It is molded in brick machine, the pressure of brick machine is 80 tons；（3）Compressing brick is transported in tunnel cave and fires 5-6h, kilneye Temperature is 60 DEG C, and kiln temperature is 1000 DEG C -1150 DEG C；（4）Finished product selection vanning storage.
Embodiment 2
A kind of clay insulating refractory block NG125-0.8, is made up of the raw material of following parts by weight：Closed perlite 25-35 parts, mix Close powder 12-18 parts, kaolin 11-14 parts, high alumina superfine powder 9-11 parts, bauxite 17-22 parts, water 14-15 parts.
The aluminum oxide that active ingredient in described mixed powder is 55%, 8% silica, 1.4% iron oxide, 26% Calcium oxide, remaining is impurity.
Described closed pore pearl powder granularity is less than 1.2mm, and mixed powder is 260 mesh, and kaolin is 180 mesh, and high alumina is ultra-fine Powder is 600 mesh, and bauxite is 180 mesh.
A kind of described clay insulating refractory block NG125-0.8 preparation method, comprises the following steps：（1）By raw material Mix in proportion, be transported to mixing and blending machine, material stock storehouse is entered after mixing；（2）The raw material mixed in material stock storehouse enters It is molded in brick machine, the pressure of brick machine is 80 tons；（3）Compressing brick is transported in tunnel cave and fires 5-6h, kilneye Temperature is 60 DEG C, and kiln temperature is 1050 DEG C -1100 DEG C；（4）Finished product selection vanning storage.
Embodiment 3
A kind of clay insulating refractory block NG125-0.8, is made up of the raw material of following parts by weight：30 parts of closed perlite, mixing 15 parts of powder, 13 parts of kaolin, 10 parts of high alumina superfine powder, 20 parts of bauxite, 14 parts of water.
The aluminum oxide that active ingredient in described mixed powder is 55%, 8% silica, 1.4% iron oxide, 26% Calcium oxide, remaining is impurity.
Described closed pore pearl powder granularity is less than 1.2mm, and mixed powder is 260 mesh, and kaolin is 180 mesh, and high alumina is ultra-fine Powder is 600 mesh, and bauxite is 180 mesh.
A kind of described clay insulating refractory block NG125-0.8 preparation method, comprises the following steps：（1）By raw material Mix in proportion, be transported to mixing and blending machine, material stock storehouse is entered after mixing；（2）The raw material mixed in material stock storehouse enters It is molded in brick machine, the pressure of brick machine is 80 tons；（3）Compressing brick is transported in tunnel cave and fires 5.5h, kilneye Temperature is 60 DEG C, and kiln temperature is 1080 DEG C；（4）Finished product selection vanning storage.
Embodiment 4
A kind of clay insulating refractory block NG125-0.8, is made up of the raw material of following parts by weight：20 parts of closed perlite, mixing 10 parts of powder, 10 parts of kaolin, 8 parts of high alumina superfine powder, 15 parts of bauxite, 13 parts of water.
The aluminum oxide that active ingredient in described mixed powder is 55%, 8% silica, 1.4% iron oxide, 26% Calcium oxide, remaining is impurity.
Described closed pore pearl powder granularity is less than 1.2mm, and mixed powder is 260 mesh, and kaolin is 180 mesh, and high alumina is ultra-fine Powder is 600 mesh, and bauxite is 180 mesh.
A kind of described clay insulating refractory block NG125-0.8 preparation method, comprises the following steps：（1）By raw material Mix in proportion, be transported to mixing and blending machine, material stock storehouse is entered after mixing；（2）The raw material mixed in material stock storehouse enters It is molded in brick machine, the pressure of brick machine is 80 tons；（3）Compressing brick is transported in tunnel cave and fires 5h, kilneye temperature Spend for 60 DEG C, kiln temperature is 1000 DEG C DEG C；（4）Finished product selection vanning storage.
Embodiment 5
A kind of clay insulating refractory block NG125-0.8, is made up of the raw material of following parts by weight：40 parts of closed perlite, mixing 20 parts of powder, 15 parts of kaolin, 12 parts of high alumina superfine powder, 25 parts of bauxite, 16 parts of water.
The aluminum oxide that active ingredient in described mixed powder is 55%, 8% silica, 1.4% iron oxide, 26% Calcium oxide, remaining is impurity.
Described closed pore pearl powder granularity is less than 1.2mm, and mixed powder is 260 mesh, and kaolin is 180 mesh, and high alumina is ultra-fine Powder is 600 mesh, and bauxite is 180 mesh.
A kind of described clay insulating refractory block NG125-0.8 preparation method, comprises the following steps：（1）By raw material Mix in proportion, be transported to mixing and blending machine, material stock storehouse is entered after mixing；（2）The raw material mixed in material stock storehouse enters It is molded in brick machine, the pressure of brick machine is 80 tons；（3）Compressing brick is transported in tunnel cave and fires 6h, kilneye temperature Spend for 60 DEG C, kiln temperature is 1150 DEG C；（4）Finished product selection vanning storage.
Embodiment 6
A kind of clay insulating refractory block NG125-0.8, is made up of the raw material of following parts by weight：25 parts of closed perlite, mixing 12 parts of powder, 11 parts of kaolin, 9 parts of high alumina superfine powder, 17 parts of bauxite, 14 parts of water.
The aluminum oxide that active ingredient in described mixed powder is 55%, 8% silica, 1.4% iron oxide, 26% Calcium oxide, remaining is impurity.
Described closed pore pearl powder granularity is less than 1.2mm, and mixed powder is 260 mesh, and kaolin is 180 mesh, and high alumina is ultra-fine Powder is 600 mesh, and bauxite is 180 mesh.
A kind of described clay insulating refractory block NG125-0.8 preparation method, comprises the following steps：（1）By raw material Mix in proportion, be transported to mixing and blending machine, material stock storehouse is entered after mixing；（2）The raw material mixed in material stock storehouse enters It is molded in brick machine, the pressure of brick machine is 80 tons；（3）Compressing brick is transported in tunnel cave and fires 5h, kilneye temperature Spend for 60 DEG C, kiln temperature is 1050 DEG C DEG C；（4）Finished product selection vanning storage.
Embodiment 7
A kind of clay insulating refractory block NG125-0.8, is made up of the raw material of following parts by weight：35 parts of closed perlite, mixing 18 parts of powder, 14 parts of kaolin, 11 parts of high alumina superfine powder, 22 parts of bauxite, 15 parts of water.
The aluminum oxide that active ingredient in described mixed powder is 55%, 8% silica, 1.4% iron oxide, 26% Calcium oxide, remaining is impurity.
Described closed pore pearl powder granularity is less than 1.2mm, and mixed powder is 260 mesh, and kaolin is 180 mesh, and high alumina is ultra-fine Powder is 600 mesh, and bauxite is 180 mesh.
A kind of described clay insulating refractory block NG125-0.8 preparation method, comprises the following steps：（1）By raw material Mix in proportion, be transported to mixing and blending machine, material stock storehouse is entered after mixing；（2）The raw material mixed in material stock storehouse enters It is molded in brick machine, the pressure of brick machine is 80 tons；（3）Compressing brick is transported in tunnel cave and fires 6h, kilneye temperature Spend for 60 DEG C, kiln temperature is 1100 DEG C；（4）Finished product selection vanning storage.
Other embodiment
A kind of clay insulating refractory block NG125-0.8, the raw material composition of parts by weight as shown in Table 1：
Table 1
The aluminum oxide that active ingredient in described mixed powder is 55%, 8% silica, 1.4% iron oxide, 26% oxidation Calcium, remaining is impurity.
Described closed pore pearl powder granularity is less than 1.2mm, and mixed powder is 260 mesh, and kaolin is 180 mesh, and high alumina is ultra-fine Powder is 600 mesh, and bauxite is 180 mesh.
A kind of described clay insulating refractory block NG125-0.8 preparation method, comprises the following steps：
Table 2
Implemented the steps of according to the embodiment any combination of each variable in table 2：
（1）Raw material is mixed in proportion, mixing and blending machine is transported to, material stock storehouse is entered after mixing；（2）Material stock mixes in storehouse Raw material enter in brick machine and be molded, the pressure of brick machine is 80 tons；（3）Compressing brick is transported in tunnel cave and burnt 5-6h processed, kilneye temperature are 60 DEG C, and kiln temperature is 1000 DEG C -1150 DEG C；（4）Finished product selection vanning storage.
Experimental example
The physical and chemical index of raw material is as shown in table 3：
Table 3
After measured, the performance indications of embodiment 3,4,5,6,7 are as shown in table 4：
Table 4.

Claims (4)

  1. A kind of 1. clay insulating refractory block NG125-0.8, it is characterised in that：It is made up of the raw material of following parts by weight：Closed pore is precious Pearl rock 20-40 parts, mixed powder 10-20 parts, kaolin 10-15 parts, high alumina superfine powder 8-12 parts, bauxite 15-25 parts, water 13-16 parts.
  2. 2. clay insulating refractory block NG125-0.8 according to claim 1, it is characterised in that：In described mixed powder Active ingredient be 55% aluminum oxide, 8% silica, 1.4% iron oxide, 26% calcium oxide, remaining is impurity.
  3. 3. clay insulating refractory block NG125-0.8 according to claim 1, it is characterised in that：Described closed pore pearl Powder particles degree is less than 1.2mm, and mixed powder is 260 mesh, and kaolin is 180 mesh, and high alumina superfine powder is 600 mesh, bauxite 180 Mesh.
  4. 4. a kind of any described clay insulating refractory block NG125-0.8 of claim 1-3 preparation method, its feature exist In：Comprise the following steps：（1）Raw material is mixed in proportion, mixing and blending machine is transported to, material stock storehouse is entered after mixing；（2）Deposit The raw material mixed in feed bin is entered in brick machine and is molded, and the pressure of brick machine is 80 tons；（3）Compressing brick is transported 5-6h is fired into tunnel cave, kilneye temperature is 60 DEG C, and kiln temperature is 1000 DEG C -1150 DEG C；（4）Finished product selection case into Storehouse.
CN201610606607.3A 2016-07-29 2016-07-29 Clay heat-insulating refractory brick NG125-0.8 and preparation method thereof Active CN107663086B (en)

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