CN113683397A - Formula and preparation method of steel slag heat storage brick for high-temperature heat storage - Google Patents
Formula and preparation method of steel slag heat storage brick for high-temperature heat storage Download PDFInfo
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- CN113683397A CN113683397A CN202110779921.2A CN202110779921A CN113683397A CN 113683397 A CN113683397 A CN 113683397A CN 202110779921 A CN202110779921 A CN 202110779921A CN 113683397 A CN113683397 A CN 113683397A
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- heat storage
- steel slag
- brick
- feldspar
- bauxite
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- 238000005338 heat storage Methods 0.000 title claims abstract description 92
- 239000002893 slag Substances 0.000 title claims abstract description 92
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 89
- 239000010959 steel Substances 0.000 title claims abstract description 89
- 239000011449 brick Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000009472 formulation Methods 0.000 title description 2
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 22
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 22
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 22
- 239000010433 feldspar Substances 0.000 claims abstract description 22
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000454 talc Substances 0.000 claims abstract description 22
- 229910052623 talc Inorganic materials 0.000 claims abstract description 22
- 238000005245 sintering Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000000498 ball milling Methods 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 10
- 230000032683 aging Effects 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 238000003483 aging Methods 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000000748 compression moulding Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000011812 mixed powder Substances 0.000 claims description 2
- 239000011232 storage material Substances 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 235000012222 talc Nutrition 0.000 description 12
- 239000007787 solid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/3427—Silicates other than clay, e.g. water glass
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Abstract
The invention belongs to the technical field of heat storage materials, and particularly relates to a steel slag heat storage brick formula for high-temperature heat storage and a preparation method thereof. The steel slag heat storage brick comprises: the steel slag, the talc, the feldspar, the kaolin and the bauxite are mixed, wherein the mass percentage of the steel slag, the talc, the feldspar, the kaolin and the bauxite is 64% -65%: 5% -6%: 9% -10%: 5% -6%: 15 to 16 percent. The steel slag heat storage brick is obtained through mixing, ball milling, drying, adding a binder, granulating, ageing, pressing and sintering. The steel slag heat storage brick prepared by the invention has good heat conductivity, can realize quick heat absorption and heat release when being applied, can realize high-temperature heat storage to 1300 ℃, has good thermal stability at high temperature, does not crack obviously, has excellent mechanical property, and can realize low-cost high-temperature heat storage.
Description
Technical Field
The invention belongs to the technical field of heat storage materials, and particularly relates to a steel slag heat storage brick formula for high-temperature heat storage and a preparation method thereof.
Background
The steel slag is a by-product in the steel-making process, and can be divided into converter slag, open-hearth slag and electric furnace slag according to different types of smelting furnaces, and mainly comprises various oxides formed by oxidizing impurities such as silicon, manganese, phosphorus, sulfur and the like in pig iron in the smelting process and salts generated by the reaction of the oxides and a solvent. Although part of the steel slag can be comprehensively utilized through secondary resources, the utilization efficiency is low on the whole, and the steel slag occupies a large area and seriously pollutes the environment in different levels of iron and steel plants in China, so that technical treatment is urgently needed.
With the progress of energy and environmental protection, the solid heat storage and clean heat supply technology has become a development hotspot in recent years in China, and the related technology has wide market potential in Xinjiang region. Therefore, the steel slag components are combined, the heat storage characteristic of the steel slag is developed, the steel slag is used for solid heat storage, a novel sensible heat material and a heat storage system of the sensible heat material are developed, the solid waste of the steel slag is fully utilized, the cost problem of the solid heat storage can be solved, and the solid heat storage system has a great market prospect.
The steel slag is used for solid heat storage, and the key technology relates to molding sintering and performance optimization technology, wherein the key technology mainly refers to that the steel slag is easy to crack in the molding sintering process and difficult to sinter and mold in large batch due to complex components; the latter relates to the thermal property of the slag brick, which can not completely meet the basic requirements of the solid heat storage system, typically, the specific heat capacity and the thermal conductivity are low, the specific heat capacity and the thermal conductivity of different types of currently reported steel slag are respectively about 0.8kJ/(kg DEG C) and 1W/(m.K), and the basic requirements of mature industrial heat storage on the heat storage material are that the specific heat capacity is higher than 1kJ/(kg DEG C) and the thermal conductivity is higher than 3W/(m.K).
Therefore, it is necessary to develop a heat storage material which contains steel slag as a main component and satisfies the basic requirements of industrial heat storage.
Disclosure of Invention
The invention aims to solve the technical problems that steel slag is selected as a main raw material, and the formula and the preparation method of the steel slag heat storage brick for high-temperature heat storage are provided.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the invention provides a steel slag heat storage brick for high-temperature heat storage, which comprises the following components: steel slag, talc, feldspar, kaolin and bauxite;
on the basis of the scheme, the steel slag heat storage brick comprises the following components in percentage by mass: 64-65% of steel slag, 5-6% of talcum, 9-10% of feldspar, 5-6% of kaolin and 15-16% of bauxite, wherein the sum of the mass percentages of the raw materials is 100%.
On the basis of the scheme, the heat storage density of the steel slag heat storage brick is 1142-1178kJ/kg (300-1300 ℃); the thermal conductivity is 0.92W/(m.K) -0.98W/(m.K); the compressive strength is 25-31 MPa.
The invention provides a preparation method of a steel slag heat storage brick for high-temperature heat storage, which is characterized by comprising the following steps of:
step one, raw material treatment: crushing and grinding the steel slag to obtain steel slag powder, mixing the steel slag powder, the talc, the feldspar, the kaolin and the bauxite according to a certain mass percentage, and performing ball milling, drying and sieving to obtain mixed material powder;
step two, preparing a blank body: adding a binder into the mixture powder obtained in the step one, then uniformly mixing, granulating, ageing, and performing compression molding to obtain a blank;
step three, sintering: and D, placing the blank obtained in the step two into a resistance furnace to be fired to obtain the steel slag heat storage brick.
On the basis of the scheme, in the step one, the particle size of the steel slag powder obtained by crushing and grinding is as follows: the steel slag powder is 200 meshes; the talc, the feldspar, the kaolin and the bauxite are all granular, the particle sizes of the talc, the feldspar, the kaolin and the bauxite are all 200 meshes, and the talc, the feldspar, the kaolin and the bauxite can be purchased in the market.
On the basis of the scheme, the steel slag, the talc, the feldspar, the kaolin and the bauxite in the first step are as follows by mass percent: 64-65% of steel slag, 5-6% of talc, 9-10% of feldspar, 5-6% of kaolin and 15-16% of bauxite.
On the basis of the scheme, in the step one, the ball milling rotating speed is 200r/min, and the ball milling time is 1 h; the drying process comprises the following steps: at 120 ℃ for 24 h; sieving with 200 mesh sieve.
On the basis of the scheme, in the second step, the adding amount of the binder is 5-8 wt% of the mixed powder obtained in the first step.
On the basis of the scheme, in the second step, the used binder is 2.5 wt% of polyvinyl alcohol aqueous solution.
On the basis of the scheme, in the second step, the ageing time is 12 h.
On the basis of the scheme, in the second step, a press machine is adopted for pressing and forming, the pressing pressure of the press machine is 600MPa, and the pressure maintaining time is 30 s.
On the basis of the scheme, in the third step, the sintering specifically comprises the following steps: firstly, heating to 600 ℃ at a heating rate of 5 ℃/min, preserving heat for 3h, then heating to 1300 ℃ at a heating rate of 5 ℃/min, preserving heat for 2h, and finally cooling along with the furnace.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a steel slag heat storage brick formula for high-temperature heat storage and a preparation method thereof, wherein the steel slag heat storage brick is prepared by taking steel slag as a main raw material, and has low cost and wide application prospect;
the steel slag heat storage brick for high-temperature heat storage prepared by the invention has higher heat storage density, and can be used as a heat storage material, so that the energy heat storage rate is improved, and the heat storage density is 1142-.
The steel slag heat storage brick for high-temperature heat storage has the advantages of better heat conductivity, higher heat absorption and release speed, 0.92W/(m.K) -0.98W/(m.K) of heat conductivity, excellent mechanical property and 25-31MPa of compressive strength.
Drawings
The invention has the following drawings:
FIG. 1 is a flow chart of preparation of a steel slag heat-storage brick.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to fig. 1.
The steel slag adopted in the embodiment of the application comprises the following specific components in Table 1:
TABLE 1 Steel slag chemical composition
The components are calculated according to mass percentage;
because pure steel slag is difficult to densify after being sintered at 1300 ℃, and the liquid phase proportion in the steel slag is too large to cause melting deformation when the temperature is continuously increased, the components of the steel slag are improved by adding the talc, the feldspar, the kaolin and the bauxite, the liquid phase proportion at 1300 ℃ is properly adjusted, the liquid phase viscosity is improved, the sintering is promoted, and the density of the steel slag heat storage brick is improved.
Example 1
A steel slag heat storage brick for high-temperature heat storage is prepared by the following steps:
(1) raw material treatment: crushing and grinding steel slag to obtain steel slag powder, weighing 65 wt% of steel slag powder (200 meshes), 5 wt% of talc (200 meshes), 10 wt% of feldspar (200 meshes), 5 wt% of kaolin (200 meshes) and 15 wt% of bauxite (200 meshes), mixing, and performing ball milling, drying and sieving to obtain mixed material powder;
2) preparing a blank body: adding 6 wt% of binder (polyvinyl alcohol aqueous solution with the content of 2.5 wt%) into the mixture, uniformly mixing, granulating, ageing, pressing for 30s under the pressure of 8t, and forming to obtain a blank;
(3) and (3) sintering: and (2) sintering the green body in a resistance furnace (the sintering process is that the temperature is increased to 600 ℃ at the heating rate of 5 ℃/min and is kept for 3h, then the temperature is increased to 1300 ℃ at the same heating rate and is kept for 2h, and finally the steel slag heat storage brick for high-temperature heat storage is obtained.
The detection shows that the heat storage density of the steel slag heat storage brick provided by the embodiment is up to 1142kJ/kg (300-.
Example 2
A steel slag heat storage brick for high-temperature heat storage is prepared by the following steps:
(1) raw material treatment: crushing and grinding steel slag to obtain steel slag powder, weighing 64 wt% of steel slag powder (200 meshes), 6 wt% of talc (200 meshes), 9 wt% of feldspar (200 meshes), 6 wt% of kaolin (200 meshes) and 15 wt% of bauxite (200 meshes), mixing, and performing ball milling, drying and sieving to obtain mixed material powder;
(2) preparing a blank body: adding 6 wt% of binder (polyvinyl alcohol aqueous solution with the content of 2.5 wt%) into the mixture, uniformly mixing, granulating, ageing, pressing for 30s under the pressure of 8t, and forming to obtain a blank;
(3) and (3) firing: and (2) sintering the green body in a resistance furnace (the sintering process is that the temperature is increased to 600 ℃ at the heating rate of 5 ℃/min and is kept for 3h, then the temperature is increased to 1300 ℃ at the same heating rate and is kept for 2h, and finally the steel slag heat storage brick for high-temperature heat storage is obtained.
The detection shows that the heat storage density of the steel slag heat storage brick provided by the embodiment is as high as 1151kJ/kg (300-.
Example 3
A steel slag heat storage brick for high-temperature heat storage is prepared by the following steps:
(1) raw material treatment: crushing and grinding steel slag to obtain steel slag powder, weighing 64 wt% of steel slag powder (200 meshes), 5 wt% of talc (200 meshes), 9 wt% of feldspar (200 meshes), 6 wt% of kaolin (200 meshes) and 16 wt% of bauxite (200 meshes), mixing, and performing ball milling, drying and sieving to obtain mixed material powder;
(2) preparing a blank body: adding 6 wt% of binder (polyvinyl alcohol aqueous solution with the content of 2.5 wt%) into the mixture, uniformly mixing, granulating, ageing, pressing for 30s under the pressure of 8t, and forming to obtain a blank;
(3) and (3) sintering: and (2) sintering the green body in a resistance furnace (the sintering process is that the temperature is increased to 600 ℃ at the heating rate of 5 ℃/min and is kept for 3h, then the temperature is increased to 1300 ℃ at the same heating rate and is kept for 2h, and finally the steel slag heat storage brick for high-temperature heat storage is obtained.
The detection shows that the heat storage density of the steel slag heat storage brick provided by the embodiment is up to 1178kJ/kg (300-.
The above examples are only for illustrating the detailed method of the present invention, and do not limit the embodiments and the protection scope of the present invention. It will be apparent to those skilled in the art that, in light of the foregoing description, many more modifications are possible in the form disclosed herein, while still remaining within the scope of the invention.
Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. A steel slag heat storage brick for high-temperature heat storage is characterized by comprising: steel slag, talc, feldspar, kaolin and bauxite.
2. The steel slag heat storage brick for high temperature heat storage according to claim 1, wherein the steel slag heat storage brick comprises the following components by mass percent: 64-65% of steel slag, 5-6% of talc, 9-10% of feldspar, 5-6% of kaolin and 15-16% of bauxite.
3. The steel slag heat storage brick for high temperature heat storage according to claim 1, wherein the heat storage density of the steel slag heat storage brick is 1142-; the thermal conductivity is 0.92W/(m.K) -0.98W/(m.K); the compressive strength is 25-31 MPa.
4. A preparation method of a steel slag heat storage brick for high-temperature heat storage is characterized by comprising the following steps:
step one, raw material treatment: crushing and grinding the steel slag to obtain steel slag powder, mixing the steel slag powder, the talc, the feldspar, the kaolin and the bauxite according to a certain mass percentage, and performing ball milling, drying and sieving to obtain mixed material powder;
step two, preparing a blank body: adding a binder into the mixture powder obtained in the step one, then uniformly mixing, granulating, ageing, and performing compression molding to obtain a blank;
step three, sintering: and D, placing the blank obtained in the step two into a resistance furnace to be fired to obtain the steel slag heat storage brick.
5. The method for preparing the steel slag heat storage brick for high-temperature heat storage according to claim 4, wherein in the step one, the steel slag powder obtained by crushing and grinding has the particle size of: the steel slag powder is 200 meshes; the talc, the feldspar, the kaolin and the bauxite are all granular, the particle sizes of the talc, the feldspar, the kaolin and the bauxite are all 200 meshes, and the talc, the feldspar, the kaolin and the bauxite are all purchased in the market.
6. The preparation method of the steel slag heat storage brick for high-temperature heat storage according to claim 4, wherein the steel slag, the talc, the feldspar, the kaolin and the bauxite in the first step are as follows by mass percent: 64-65% of steel slag, 5-6% of talc, 9-10% of feldspar, 5-6% of kaolin and 15-16% of bauxite.
7. The preparation method of the steel slag heat storage brick for high temperature heat storage according to claim 4, wherein in the first step, the ball milling rotation speed is 200r/min, and the ball milling time is 1 h; the drying process comprises the following steps: at 120 ℃ for 24 h; sieving with 200 mesh sieve.
8. The method for preparing the steel slag heat storage brick for high temperature heat storage according to claim 4, wherein in the second step, the binder is added in an amount of 5-8 wt% of the mixed powder obtained in the first step; the binder is a 2.5 wt% aqueous solution of polyvinyl alcohol.
9. The preparation method of the steel slag heat storage brick for high temperature heat storage according to claim 4, wherein in the second step, the aging time is 12 h; and pressing and forming by adopting a press machine, wherein the pressing pressure of the press machine is 600MPa, and the pressure maintaining time is 30 s.
10. The preparation method of the steel slag heat storage brick for high-temperature heat storage according to claim 4, wherein in the third step, the sintering specifically comprises: firstly, heating to 600 ℃ at a heating rate of 5 ℃/min, preserving heat for 3h, then heating to 1300 ℃ at a heating rate of 5 ℃/min, preserving heat for 2h, and finally cooling along with the furnace.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114644509A (en) * | 2022-03-21 | 2022-06-21 | 筑邦建筑科技投资(深圳)有限公司 | Light-weight silicon spar wallboard with high-content steel slag waste and preparation method |
| CN114890720A (en) * | 2022-04-22 | 2022-08-12 | 新疆互力佳源环保科技有限公司 | Steel slag heat storage material with high forming stability and preparation method thereof |
| CN114920544A (en) * | 2022-04-04 | 2022-08-19 | 新疆互力佳源环保科技有限公司 | Heat storage ceramic material taking steel slag as main component and preparation method thereof |
| CN115073136A (en) * | 2022-06-10 | 2022-09-20 | 武汉理工大学 | High-steel-slag-content heat absorption and storage integrated ceramic and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570340A (en) * | 2013-11-04 | 2014-02-12 | 佛山欧神诺陶瓷股份有限公司 | Architectural ceramic prepared from industrial solid waste through dry method and process for preparing architectural ceramic |
| CN104926284A (en) * | 2015-05-29 | 2015-09-23 | 方堃 | Steel-slag-doped dirt-resistant ceramic floor tile unlikely to contaminate |
| CN105060849A (en) * | 2015-07-29 | 2015-11-18 | 安徽鑫润新型材料有限公司 | Steel slag added ceramic floor tile with thermal insulation function |
| CN105314949A (en) * | 2015-12-07 | 2016-02-10 | 邸玉臣 | High-strength light building brick and preparation process thereof |
| CN107298577A (en) * | 2017-06-22 | 2017-10-27 | 合肥永泰新型建材有限公司 | A kind of floor tile and preparation method thereof |
| CN110759738A (en) * | 2018-07-27 | 2020-02-07 | 广东清大同科环保技术有限公司 | Steel slag ceramsite and preparation method thereof |
-
2021
- 2021-07-09 CN CN202110779921.2A patent/CN113683397A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570340A (en) * | 2013-11-04 | 2014-02-12 | 佛山欧神诺陶瓷股份有限公司 | Architectural ceramic prepared from industrial solid waste through dry method and process for preparing architectural ceramic |
| CN104926284A (en) * | 2015-05-29 | 2015-09-23 | 方堃 | Steel-slag-doped dirt-resistant ceramic floor tile unlikely to contaminate |
| CN105060849A (en) * | 2015-07-29 | 2015-11-18 | 安徽鑫润新型材料有限公司 | Steel slag added ceramic floor tile with thermal insulation function |
| CN105314949A (en) * | 2015-12-07 | 2016-02-10 | 邸玉臣 | High-strength light building brick and preparation process thereof |
| CN107298577A (en) * | 2017-06-22 | 2017-10-27 | 合肥永泰新型建材有限公司 | A kind of floor tile and preparation method thereof |
| CN110759738A (en) * | 2018-07-27 | 2020-02-07 | 广东清大同科环保技术有限公司 | Steel slag ceramsite and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4220059A1 (en) * | 2022-02-01 | 2023-08-02 | Siemens Gamesa Renewable Energy GmbH & Co. KG | Method and system for improving quality parameters of bulk material for thermal energy storage |
| CN114644509A (en) * | 2022-03-21 | 2022-06-21 | 筑邦建筑科技投资(深圳)有限公司 | Light-weight silicon spar wallboard with high-content steel slag waste and preparation method |
| CN114920544A (en) * | 2022-04-04 | 2022-08-19 | 新疆互力佳源环保科技有限公司 | Heat storage ceramic material taking steel slag as main component and preparation method thereof |
| CN114890720A (en) * | 2022-04-22 | 2022-08-12 | 新疆互力佳源环保科技有限公司 | Steel slag heat storage material with high forming stability and preparation method thereof |
| CN115073136A (en) * | 2022-06-10 | 2022-09-20 | 武汉理工大学 | High-steel-slag-content heat absorption and storage integrated ceramic and preparation method thereof |
| CN116003098A (en) * | 2022-12-21 | 2023-04-25 | 华北电力大学 | High-strength heat storage material and preparation method thereof |
| CN116003104A (en) * | 2022-12-27 | 2023-04-25 | 沈阳兰昊新能源科技有限公司 | Industrial solid waste material heat storage brick and preparation process thereof |
| CN116003104B (en) * | 2022-12-27 | 2024-03-08 | 沈阳兰昊新能源科技有限公司 | Industrial solid waste material heat storage brick and preparation process thereof |
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