CN103396157A - Light foamed ceramic wall building material with iron tailings as main raw material - Google Patents

Light foamed ceramic wall building material with iron tailings as main raw material Download PDF

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CN103396157A
CN103396157A CN2013103153042A CN201310315304A CN103396157A CN 103396157 A CN103396157 A CN 103396157A CN 2013103153042 A CN2013103153042 A CN 2013103153042A CN 201310315304 A CN201310315304 A CN 201310315304A CN 103396157 A CN103396157 A CN 103396157A
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raw material
iron tailings
parts
kiln
main raw
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卫可
张登峰
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FOSHAN COUNTY JINGSHENG NEW STYLE ARCHITECTURE MATERIAL LLC
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FOSHAN COUNTY JINGSHENG NEW STYLE ARCHITECTURE MATERIAL LLC
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Abstract

The invention relates to a light foamed ceramic wall building material with iron tailings as a main raw material and a production process thereof. The light foamed ceramic wall building material can be used for replacing traditional wall materials and thermal insulation materials. Iron tailings are adopted as the main raw material of the building material provided by the invention, quartz, calcite, sodium carbonate, borax, alumina and a foaming agent are configured, the ball milling time of raw materials in the production process is about 10h, the fineness is 300 meshes, a roller kiln is selected in the sintering process, the sintering period is about 6h, and the sintering temperature is about 1030 DEG C. The successful development of the building material of the invention is a technological revolution of building wall materials, which can greatly reduce the cost of building walls, reduce the labor intensity of workers, reduce the overall weight of buildings, reduce the basic load of the buildings, and meanwhile, achieving such targets of buildings as lightweight, thermal insulation, sound insulation, moisture resistance, and the like, and meeting the current environment-friendly, non-pollution and energy-saving requirements of modern buildings.

Description

Foamed ceramics Light Wall material of construction take iron tailings as main raw material
Technical field
The present invention relates to building material technical field, specifically a kind of foamed ceramics Light Wall material of construction take iron tailings as main raw material.
Background technology
According to firmly building section's statistical information, in the building of existing approximately 42,000,000,000 square meters of China, the construction wall structured material more than 95% all adopts traditional high energy consumption, the materials for wall of high thermal conductivity, and for reaching the heat preservation energy-saving requirement, buildings all must add outer thermal insulation separation thermosphere.And at present exterior-wall heat insulation generally to adopt organic materials or inorganic composite materials be main, there are the problems such as fire prevention, toxic, weather resistance, waterproof substantially in these materials.Mainly contain styrofoam, polyurethane sheet, phenolic-aldehyde heat-insulation board etc. as organic material, these organic insulation materials belong to the B level, non-refractory, easy firing, and in when burning, discharge a large amount of heats, produce simultaneously a large amount of toxic and harmfuls, not only can accelerate large fire spreading but also easily cause trapped personnel and rescue personnel's injures and deaths; Inorganic composite materials mainly contains rock cotton board, block of glass wool etc., and these inorganic composite heat-insulating materials exist dust and fiber fines, and not only polluted air but also easily breed bacteria become the hidden danger of harm health of people already, and weather resistance, water-repellancy are not good.
Summary of the invention
The objective of the invention is in order to solve above-mentioned problems of the prior art, and provide a kind of novel wall body building material to replace traditional materials for wall, lagging material, a kind of foamed ceramics Light Wall material of construction take iron tailings as main raw material specifically.Material of the present invention is on the basis that has numerous material of construction feature performance benefits, can realize the buildings lightweight, can directly use on inner wall of building, exterior wall, screen, decoration, insulation, fire prevention are combined together, and significantly reduce decoration cost, reduce buildings weight, save energy, use range is large, has long-range prospect.
The present invention is achieved by the following technical solutions:
A kind of foamed ceramics Light Wall material of construction take iron tailings as main raw material, made by the raw material of following parts by weight: iron tailings 50-55 part, quartzy 30-35 part, calcite 4-7 part, soda ash 1-3 part, borax 2-4 part, aluminum oxide 1-3 part, whipping agent 3-5 part.
Further, the preferred weight mark of described each component raw material is:
50 parts of iron tailings, 35 parts, quartz, 5 parts, calcite, 3 parts of soda ash, 2 parts of boraxs, 2 parts, aluminum oxide, 3 parts of whipping agents.
Composition of raw materials of the present invention is to draw through a large amount of tests repeatedly, this formula has well solved the many difficulties that runs into preparing take iron tailings as raw material when foamed ceramics is built material, as: 1) in iron tailings, iron level is high, has a strong impact on the foaming in the production of foamed ceramics Light Wall material of construction; 2) in admixtion, proportion is bigger than normal; 3) fineness of admixtion grinding, the temperature requirement that burns till is harsh, controls difficulty large; 4) foaming is inhomogeneous etc.
The production technique of the foamed ceramics Light Wall material of construction of the present invention take iron tailings as main raw material, comprise the steps:
1) weighing and burden: each raw material is weighed respectively by its weight part;
2) premix: each raw material that will prepare fully mixes;
3) ball milling: will mix sufficient raw material and put into ball mill and carry out ball milling;
4) fineness check: raw material by ball milling become more than 300 orders for qualified and enter into next step operation, return in ball mill less than 300 purposes and continue ball milling;
5) stock tank is heavy rotten: the raw material that ball milling is good is placed in stock tank and places 5-6h(namely: the raw material that ball milling is good is placed 5-6h in pond);
6) drying-granulating: the raw material powder input spray tower of placing in stock tank is carried out drying-granulating, cause size to be the particle of 0.5-1mm size;
7) feed bin stores: the raw material that granulation is good is placed in feed bin standby;
8) stone: the raw material in the feeding storehouse is layed in grinding tool;
9) roller kiln sintering: the mould that will lay raw material is put into roller kiln and is carried out sintering;
10) Control for Kiln Temperature: the sintering temperature of roller kiln is 1000-1050 ℃;
11) kiln discharge unloads kiln: raw material in roller kiln after sintering 5-7h kiln discharge unload kiln, namely prepared the foamed ceramics Light Wall material of construction take iron tailings as main raw material;
12) cutting: the foamed ceramics Light Wall material of construction take iron tailings as main raw material that will prepare size on request cuts, and the remaining scrap stock of cutting can be recycled again;
13) quality test: up-to-standard enter next step operation, underproof recycling;
14) packing is dispatched from the factory: through the foamed ceramics Light Wall material of construction packing take iron tailings as main raw material that is up to the standards, dispatch from the factory.
Material of construction of the present invention is a kind of high-strength micritization silicate material of porous of producing with ceramic process, has the advantages that intensity is high, lightweight, thermal conductivity is little, can be widely used on various building inside and outside walls.This material of construction has following advantage: 1) raw material sources are extensive: China mining area is numerous, has a large amount of solid waste, and wherein common iron tailings namely can be used as the main raw material of material of construction of the present invention, can consume iron tailings in a large number and turn waste into wealth; 2) do not burn: material of construction of the present invention does not burn (not firing the A level), and use temperature can reach 1000 ℃, does not produce any toxic and harmful, belongs to Green Product; 3) good heat insulating: the thermal conductivity of material of construction of the present invention can reach 0.065w/m.k, itself is difficult for by extraneous other factor impacts, and thermal and insulating performance is steady in a long-term; 4) light weight intensity is high: material of construction proportion of the present invention is little: 150 ~ 400 kilograms/M 3, intensity is high: ultimate compression strength reaches 10Mpa, folding strength 4Mpa, is a kind of desirable insulation with self-supporting, fire-proof construction material; 5) freeze-thaw resistance is good: material of construction of the present invention has excellent freeze-thaw resistance, and best dimensional stability, can guarantee that buildings can not ftracture and leak under any abominable living environment; 6) good with the materials for wall associativity: the thermal expansivity of material of construction of the present invention and other wall body building materials are very approaching, thereby firm with these material bindings, expand consistent, can not produce cracking; 7) water-absorbent is low: material of construction of the present invention is to be piled up and formed by the air spheroid of mutual sealing, and water-intake rate is only 0.5-0.8%, and complete impermeable steam can guarantee heat-insulating property and the work-ing life of buildings long term maintenance excellence; 8) corrosion-resistant: material of construction of the present invention has good chemical stability, and acid, alkali are had extremely strong corrosion resistance, but the better protecting building extends the work-ing life of building; 9) longevity: material of construction of the present invention belongs to the inorganic crystallites macromolecular material, and stable performance can be not aging, with the same longevity of buildings; 10) recyclable: some tailings in the process of producing of material of construction of the present invention, waste product etc. are recyclable recycling all, again makes product, does not have aborning waste material to produce, and has reached the purpose of saving cost, energy-saving and emission-reduction.
The basic mechanical design feature index of material of construction of the present invention and traditional materials for wall, lagging material are more as shown in table 1:
Table 1
Figure 954022DEST_PATH_IMAGE001
As can be seen from the table, every technical performance index of material of construction of the present invention all is better than the technical performance index of traditional materials for wall, lagging material.
In sum, succeeding in developing of material of construction of the present invention will be a technological revolution of construction material, to significantly reduce the construction wall cost, reduce builder's labour intensity, alleviate the buildings overall weight, reduce the building foundation loading, can also realize the purposes such as buildings lightweight, insulation, sound insulation, protection against the tide simultaneously, meet current green, environmental protection, pollution-free and energy-conservation modern architecture requirement.
Description of drawings
Fig. 1 is the production technological process of the foamed ceramics Light Wall material of construction of the present invention take iron tailings as main raw material.
Embodiment
Embodiment 1: every part is 10kg
A kind of foamed ceramics Light Wall material of construction take iron tailings as main raw material, made by the raw material of following parts by weight: 50 parts of iron tailings, 35 parts, quartz, 5 parts, calcite, 3 parts of soda ash, 2 parts of boraxs, 2 parts, aluminum oxide, 3 parts of whipping agents.
The production technique of above-mentioned foamed ceramics Light Wall material of construction take iron tailings as main raw material, comprise the steps:
1) weighing and burden: each raw material is weighed respectively by its weight part;
2) premix: each raw material that will prepare fully mixes;
3) ball milling: will mix sufficient raw material and put into ball mill and carry out ball milling;
4) fineness check: raw material by ball milling become more than 300 orders for qualified and enter into next step operation, return in ball mill less than 300 purposes and continue ball milling;
5) stock tank is heavy rotten: the raw material that ball milling is good is placed in stock tank and places 5h;
6) drying-granulating: the raw material powder input spray tower of placing in stock tank is carried out drying-granulating, cause size to be the particle of 1mm size;
7) feed bin stores: the raw material that granulation is good is placed in feed bin standby;
8) stone: the raw material in the feeding storehouse is layed in grinding tool;
9) roller kiln sintering: the mould that will lay raw material is put into roller kiln and is carried out sintering;
10) Control for Kiln Temperature: the sintering temperature of roller kiln is 1030 ℃;
11) kiln discharge unloads kiln: raw material in roller kiln after sintering 6h kiln discharge unload kiln, namely prepared the foamed ceramics Light Wall material of construction take iron tailings as main raw material;
12) cutting: the foamed ceramics Light Wall material of construction take iron tailings as main raw material that will prepare size on request cuts;
13) quality test: up-to-standard enter next step operation, underproof recycling;
14) packing is dispatched from the factory: through the foamed ceramics Light Wall material of construction packing take iron tailings as main raw material that is up to the standards, dispatch from the factory.
Embodiment 2: every part is 1kg
A kind of foamed ceramics Light Wall material of construction take iron tailings as main raw material, made by the raw material of following parts by weight: 48 parts of iron tailings, 33 parts, quartz, 7 parts, calcite, 2 parts of soda ash, 3 parts of boraxs, 1 part, aluminum oxide, 4 parts of whipping agents.
The production technique of above-mentioned foamed ceramics Light Wall material of construction take iron tailings as main raw material, comprise the steps:
1) weighing and burden: each raw material is weighed respectively by its weight part;
2) premix: each raw material that will prepare fully mixes;
3) ball milling: will mix sufficient raw material and put into ball mill and carry out ball milling;
4) fineness check: raw material by ball milling become more than 300 orders for qualified and enter into next step operation, return in ball mill less than 300 purposes and continue ball milling;
5) stock tank is heavy rotten: the raw material that ball milling is good is placed in stock tank and places 6h;
6) drying-granulating: the raw material powder input spray tower of placing in stock tank is carried out drying-granulating, cause size to be the particle of 0.8mm size;
7) feed bin stores: the raw material that granulation is good is placed in feed bin standby;
8) stone: the raw material in the feeding storehouse is layed in grinding tool;
9) roller kiln sintering: the mould that will lay raw material is put into roller kiln and is carried out sintering;
10) Control for Kiln Temperature: the sintering temperature of roller kiln is 1010 ℃;
11) kiln discharge unloads kiln: raw material in roller kiln after sintering 7h kiln discharge unload kiln, namely prepared the foamed ceramics Light Wall material of construction take iron tailings as main raw material;
12) cutting: the foamed ceramics Light Wall material of construction take iron tailings as main raw material that will prepare size on request cuts;
13) quality test: up-to-standard enter next step operation, underproof recycling;
14) packing is dispatched from the factory: through the foamed ceramics Light Wall material of construction packing take iron tailings as main raw material that is up to the standards, dispatch from the factory.
Embodiment 3: every part is 1 kilogram
A kind of foamed ceramics Light Wall material of construction take iron tailings as main raw material, made by the raw material of following parts by weight: 52 parts of iron tailings, 30 parts, quartz, 6 parts, calcite, 1 part of soda ash, 2 parts of boraxs, 1 part, aluminum oxide, 3 parts of whipping agents.
The production technique of above-mentioned foamed ceramics Light Wall material of construction take iron tailings as main raw material, comprise the steps:
1) weighing and burden: each raw material is weighed respectively by its weight part;
2) premix: each raw material that will prepare fully mixes;
3) ball milling: will mix sufficient raw material and put into ball mill and carry out ball milling;
4) fineness check: raw material by ball milling become more than 300 orders for qualified and enter into next step operation, return in ball mill less than 300 purposes and continue ball milling;
5) stock tank is heavy rotten: the raw material that ball milling is good is placed in stock tank and places 5h;
6) drying-granulating: the raw material powder input spray tower of placing in stock tank is carried out drying-granulating, cause size to be the particle of 1mm size;
7) feed bin stores: the raw material that granulation is good is placed in feed bin standby;
8) stone: the raw material in the feeding storehouse is layed in grinding tool;
9) roller kiln sintering: the mould that will lay raw material is put into roller kiln and is carried out sintering;
10) Control for Kiln Temperature: the sintering temperature of roller kiln is 1050 ℃;
11) kiln discharge unloads kiln: raw material in roller kiln after sintering 5h kiln discharge unload kiln, namely prepared the foamed ceramics Light Wall material of construction take iron tailings as main raw material;
12) cutting: the foamed ceramics Light Wall material of construction take iron tailings as main raw material that will prepare size on request cuts;
13) quality test: up-to-standard enter next step operation, underproof recycling;
14) packing is dispatched from the factory: through the foamed ceramics Light Wall material of construction packing take iron tailings as main raw material that is up to the standards, dispatch from the factory.
Embodiment 4: every part is 1g
A kind of foamed ceramics Light Wall material of construction take iron tailings as main raw material, made by the raw material of following parts by weight: 53 parts of iron tailings, 34 parts, quartz, 5 parts, calcite, 3 parts of soda ash, 4 parts of boraxs, 2 parts, aluminum oxide, 5 parts of whipping agents.
The production technique of above-mentioned foamed ceramics Light Wall material of construction take iron tailings as main raw material, comprise the steps:
1) weighing and burden: each raw material is weighed respectively by its weight part;
2) premix: each raw material that will prepare fully mixes;
3) ball milling: will mix sufficient raw material and put into ball mill and carry out ball milling;
4) fineness check: raw material by ball milling become more than 300 orders for qualified and enter into next step operation, return in ball mill less than 300 purposes and continue ball milling;
5) stock tank is heavy rotten: the raw material that ball milling is good is placed in stock tank and places 5.5h;
6) drying-granulating: the raw material powder input spray tower of placing in stock tank is carried out drying-granulating, cause size to be the particle of 0.5mm size;
7) feed bin stores: the raw material that granulation is good is placed in feed bin standby;
8) stone: the raw material in the feeding storehouse is layed in grinding tool;
9) roller kiln sintering: the mould that will lay raw material is put into roller kiln and is carried out sintering;
10) Control for Kiln Temperature: the sintering temperature of roller kiln is 1000 ℃;
11) kiln discharge unloads kiln: raw material in roller kiln after sintering 6.5h kiln discharge unload kiln, namely prepared the foamed ceramics Light Wall material of construction take iron tailings as main raw material;
12) cutting: the foamed ceramics Light Wall material of construction take iron tailings as main raw material that will prepare size on request cuts;
13) quality test: up-to-standard enter next step operation, underproof recycling;
14) packing is dispatched from the factory: through the foamed ceramics Light Wall material of construction packing take iron tailings as main raw material that is up to the standards, dispatch from the factory.
Embodiment 5: every part is 10kg
A kind of foamed ceramics Light Wall material of construction take iron tailings as main raw material, made by the raw material of following parts by weight: 49 parts of iron tailings, 31 parts, quartz, 4 parts, calcite, 2 parts of soda ash, 3 parts of boraxs, 3 parts, aluminum oxide, 4 parts of whipping agents.
The production technique of above-mentioned foamed ceramics Light Wall material of construction take iron tailings as main raw material, comprise the steps:
1) weighing and burden: each raw material is weighed respectively by its weight part;
2) premix: each raw material that will prepare fully mixes;
3) ball milling: will mix sufficient raw material and put into ball mill and carry out ball milling;
4) fineness check: raw material by ball milling become more than 300 orders for qualified and enter into next step operation, return in ball mill less than 300 purposes and continue ball milling;
5) stock tank is heavy rotten: the raw material that ball milling is good is placed in stock tank and places 6h;
6) drying-granulating: the raw material powder input spray tower of placing in stock tank is carried out drying-granulating, cause size to be the particle of 0.9mm size;
7) feed bin stores: the raw material that granulation is good is placed in feed bin standby;
8) stone: the raw material in the feeding storehouse is layed in grinding tool;
9) roller kiln sintering: the mould that will lay raw material is put into roller kiln and is carried out sintering;
10) Control for Kiln Temperature: the sintering temperature of roller kiln is 1030 ℃;
11) kiln discharge unloads kiln: raw material in roller kiln after sintering 5.5h kiln discharge unload kiln, namely prepared the foamed ceramics Light Wall material of construction take iron tailings as main raw material;
12) cutting: the foamed ceramics Light Wall material of construction take iron tailings as main raw material that will prepare size on request cuts;
13) quality test: up-to-standard enter next step operation, underproof recycling;
14) packing is dispatched from the factory: through the foamed ceramics Light Wall material of construction packing take iron tailings as main raw material that is up to the standards, dispatch from the factory.

Claims (3)

1. foamed ceramics Light Wall material of construction take iron tailings as main raw material, it is characterized in that, by the raw material of following parts by weight, made: iron tailings 50-55 part, quartzy 30-35 part, calcite 4-7 part, soda ash 1-3 part, borax 2-4 part, aluminum oxide 1-3 part, whipping agent 3-5 part.
2. the foamed ceramics Light Wall material of construction take iron tailings as main raw material according to claim 1, it is characterized in that, by the raw material of following parts by weight, made: 50 parts of iron tailings, 35 parts, quartz, 5 parts, calcite, 3 parts of soda ash, 2 parts of boraxs, 2 parts, aluminum oxide, 3 parts of whipping agents.
3. the production technique of the foamed ceramics Light Wall material of construction take iron tailings as main raw material according to claim 1 and 2, is characterized in that, comprises the steps:
1) weighing and burden: each raw material is weighed respectively by its weight part;
3) premix: each raw material that will prepare fully mixes;
3) ball milling: will mix sufficient raw material and put into ball mill and carry out ball milling;
4) fineness check: raw material by ball milling become more than 300 orders for qualified and enter into next step operation, return in ball mill less than 300 purposes and continue ball milling;
5) stock tank is heavy rotten: the raw material that ball milling is good is placed in stock tank and places 5-6h;
6) drying-granulating: the raw material powder input spray tower of placing in stock tank is carried out drying-granulating, cause size to be the particle of 0.5-1mm size;
7) feed bin stores: the raw material that granulation is good is placed in feed bin standby;
8) stone: the raw material in the feeding storehouse is layed in grinding tool;
9) roller kiln sintering: the mould that will lay raw material is put into roller kiln and is carried out sintering;
10) Control for Kiln Temperature: the sintering temperature of roller kiln is 1000-1050 ℃;
11) kiln discharge unloads kiln: raw material in roller kiln after sintering 5-7h kiln discharge unload kiln, namely prepared the foamed ceramics Light Wall material of construction take iron tailings as main raw material;
12) cutting: the foamed ceramics Light Wall material of construction take iron tailings as main raw material that will prepare size on request cuts;
13) quality test: up-to-standard enter next step operation, underproof recycling;
14) packing is dispatched from the factory: through the foamed ceramics Light Wall material of construction packing take iron tailings as main raw material that is up to the standards, dispatch from the factory.
CN2013103153042A 2013-07-25 2013-07-25 Light foamed ceramic wall building material with iron tailings as main raw material Pending CN103396157A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106045560A (en) * 2016-06-02 2016-10-26 祁守岗 Foamed ceramic and preparing method thereof
CN106588081A (en) * 2016-12-14 2017-04-26 济南大学 Preparation of iron tailing based light heat-preservation foamed ceramic material
CN107021781A (en) * 2017-04-01 2017-08-08 三明学院 Construction material and its application method are built in a kind of wall spray
CN107857565A (en) * 2017-11-16 2018-03-30 辽宁罕王绿色建材有限公司 A kind of technique of raw material semidry method grain production foamed ceramic
CN108166697A (en) * 2018-01-08 2018-06-15 北京工业大学 A kind of method that one step sintering of iron tailings prepares heat insulation decoration integrated plate
CN108395273A (en) * 2018-04-12 2018-08-14 辽宁罕王绿色建材有限公司 A kind of production technology improving foamed ceramic partition plate fire endurance
CN110256045A (en) * 2019-04-30 2019-09-20 东北大学 Foam insulation board prepared from iron tailings and preparation method thereof
CN115073203A (en) * 2022-07-27 2022-09-20 安徽工业大学 Foamed ceramic wall material with good hanging function and preparation method thereof
CN116283342A (en) * 2023-01-17 2023-06-23 安徽工业大学 Foam ceramic external wall heat insulation material and preparation method thereof

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CN102180650A (en) * 2011-02-28 2011-09-14 武汉科技大学 Ceramic tile manufactured from low-silicon high-iron tailing as major raw material and manufacture method thereof
CN102718547A (en) * 2012-06-11 2012-10-10 中国钢研科技集团有限公司 Foamed ceramic material and preparation method thereof

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CN102180650A (en) * 2011-02-28 2011-09-14 武汉科技大学 Ceramic tile manufactured from low-silicon high-iron tailing as major raw material and manufacture method thereof
CN102718547A (en) * 2012-06-11 2012-10-10 中国钢研科技集团有限公司 Foamed ceramic material and preparation method thereof

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106045560A (en) * 2016-06-02 2016-10-26 祁守岗 Foamed ceramic and preparing method thereof
CN106588081A (en) * 2016-12-14 2017-04-26 济南大学 Preparation of iron tailing based light heat-preservation foamed ceramic material
CN107021781A (en) * 2017-04-01 2017-08-08 三明学院 Construction material and its application method are built in a kind of wall spray
CN107857565A (en) * 2017-11-16 2018-03-30 辽宁罕王绿色建材有限公司 A kind of technique of raw material semidry method grain production foamed ceramic
CN108166697A (en) * 2018-01-08 2018-06-15 北京工业大学 A kind of method that one step sintering of iron tailings prepares heat insulation decoration integrated plate
CN108395273A (en) * 2018-04-12 2018-08-14 辽宁罕王绿色建材有限公司 A kind of production technology improving foamed ceramic partition plate fire endurance
CN110256045A (en) * 2019-04-30 2019-09-20 东北大学 Foam insulation board prepared from iron tailings and preparation method thereof
CN115073203A (en) * 2022-07-27 2022-09-20 安徽工业大学 Foamed ceramic wall material with good hanging function and preparation method thereof
CN115073203B (en) * 2022-07-27 2023-08-04 安徽工业大学 Foam ceramic wall material with good hanging function and preparation method thereof
CN116283342A (en) * 2023-01-17 2023-06-23 安徽工业大学 Foam ceramic external wall heat insulation material and preparation method thereof
CN116283342B (en) * 2023-01-17 2024-04-09 安徽工业大学 Foam ceramic external wall heat insulation material and preparation method thereof

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