CN115710133A - Method for preparing heat-resistant castable from waste building ceramics and waste mullite slab - Google Patents
Method for preparing heat-resistant castable from waste building ceramics and waste mullite slab Download PDFInfo
- Publication number
- CN115710133A CN115710133A CN202211481981.7A CN202211481981A CN115710133A CN 115710133 A CN115710133 A CN 115710133A CN 202211481981 A CN202211481981 A CN 202211481981A CN 115710133 A CN115710133 A CN 115710133A
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- China
- Prior art keywords
- parts
- waste
- mullite
- castable
- heat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002699 waste material Substances 0.000 title claims abstract description 73
- 239000000919 ceramic Substances 0.000 title claims abstract description 44
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910052863 mullite Inorganic materials 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title abstract description 7
- 239000004568 cement Substances 0.000 claims abstract description 21
- 150000004645 aluminates Chemical class 0.000 claims abstract description 18
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 18
- 239000004927 clay Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 2
- 239000011362 coarse particle Substances 0.000 claims 1
- 239000010419 fine particle Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 4
- 239000011819 refractory material Substances 0.000 abstract description 3
- 239000010881 fly ash Substances 0.000 abstract description 2
- 239000002920 hazardous waste Substances 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses a method for preparing a heat-resistant castable from waste building ceramics and waste mullite decking, and belongs to the technical field of refractory material preparation. The castable disclosed by the invention is prepared from the following raw materials in parts by weight: 40-80 parts of waste building ceramics, 6-40 parts of waste mullite shed boards, 3-10 parts of clay, 1-10 parts of bauxite and 2-8 parts of aluminate cement. The heat-resistant castable is prepared by taking the waste building ceramics and the waste mullite shed plate as raw materials, realizes high-value utilization of waste resources, can realize large-scale consumption of the waste ceramics, and has important social significance. The heat-resistant castable disclosed by the invention has excellent high-temperature resistance, the use temperature can reach 1150 ℃, the fly ash corrosion can be effectively resisted, and the castable can be applied to cement kilns, CFB boilers, garbage incinerators, hazardous waste incinerators and other thermal equipment to improve the operation stability of the equipment.
Description
Technical Field
The invention relates to the technical field of refractory material preparation, in particular to a method for preparing a heat-resistant castable by using waste building ceramics and waste mullite decking.
Background
The production quantity and the waste quantity of the defective products of the building ceramics are large, the production raw materials are not high in price, a large amount of manpower and material resources are consumed for recycling the ceramic waste, and the enterprise recycling intention is not strong. The generation of the building ceramic waste is mainly caused by defects or breakage in the processes of burning, carrying and storing, and is a large amount of building ceramic waste generated by building removal or decoration engineering in the building industry along with the advancement of urbanization. The mullite shed plate is commonly used for supporting and isolating ceramic products during saggar-free firing, and can bear the thermal stress action of room temperature, high temperature and room temperature for many times and easily damage or adhere due to carrying, collision and the like in the process of loading the saggars, so that a large amount of waste shed plates are generated due to the loss of the original strength. A large amount of ceramic waste is accumulated and buried, occupies cultivated land, has bad influence on the environment and greatly limits the sustainable development of the ceramic industry. A large amount of ceramic waste materials are stacked in a centralized manner or are buried, and a low-value decrement consumption utilization mode is greatly limited by freight cost and freight distance, so that a method for seeking large-scale value-added utilization of the building ceramic waste materials is urgent.
The waste building ceramic mainly takes mullite as a main material, the shed plate mainly takes mullite as a main material, and after high-temperature sintering, the waste building ceramic has the advantages of granulation, high-temperature resistance, high hardness, good density, stable structure, good oxidation resistance and the like, and has potential application value in preparing refractory materials.
In the prior art, various systems of casting material schemes exist, but the cost of a common preparation method of the heat-resistant casting material is higher, the heat-resistant casting material prepared by the invention has excellent high-temperature resistance, and simultaneously, the high-value utilization of waste building ceramics is realized.
Disclosure of Invention
The invention aims to provide a castable which is prepared from waste building ceramics and waste mullite slabs serving as main raw materials, has low cost, high waste ceramic utilization rate and low energy consumption, and has excellent high-temperature resistance. The heat-resistant castable disclosed by the invention is prepared from the following raw materials in parts by weight: 40-80 parts of waste building ceramics, 6-40 parts of waste mullite slabs, 3-10 parts of clay, 1-10 parts of bauxite, 2-8 parts of aluminate cement and 0.15-0.55 part of an additive.
The castable disclosed by the invention takes waste building ceramics and waste mullite slabs as main raw materials, and bauxite, clay, aluminate cement and the like are added as auxiliary materials. The prepared castable has excellent high-temperature resistance while utilizing waste ceramics at a high value, and all performance indexes of the castable can meet the operating requirements of working conditions.
Preferably, the waste building ceramic is mullite, wherein Al is contained 2 O 3 15-20 percent of the total weight of the components.
Preferably, al in the waste mullite shed plate 2 O 3 The content of (A) is 60-70%.
Preferably, the additive is one or more of water glass, sodium tripolyphosphate, sodium hexametaphosphate and aluminum dihydrogen phosphate.
Preferably, the raw materials for preparing the castable comprise:
60-64 parts of waste building ceramics, 26-30 parts of waste mullite shed plates, 3-5 parts of bauxite, 3-4 parts of clay, 4-5 parts of aluminate cement and 0.25-0.30 part of an additive;
the total amount of the waste building ceramics, the waste mullite shed plate, the bauxite, the clay and the aluminate cement is 100 parts.
Preferably, the raw materials for preparing the refractory castable comprise:
40 parts of waste building ceramics, 40 parts of waste mullite shed plates, 8 parts of bauxite, 7 parts of clay, 5 parts of aluminate cement and 0.17 part of an additive;
and/or 55 parts of waste building ceramics, 30 parts of waste mullite shed plates, 4 parts of bauxite, 5 parts of clay, 6 parts of aluminate cement and 0.22 part of an additive;
and/or 65 parts of waste building ceramics, 20 parts of waste mullite shed plates, 4 parts of bauxite, 4 parts of clay, 7 parts of aluminate cement and 0.27 part of an additive.
The invention also provides a preparation method of the castable, which comprises the following steps:
(1) Uniformly mixing the waste building ceramics, the waste mullite shed plate, the bauxite and the clay, and bagging;
(2) Adding the additive into aluminate cement, mixing uniformly, and filling into small bags;
(3) And putting the small cement bags into the raw material bags according to the proportion.
The unit of the weight portion is a national standard unit, such as g, kg, ton and the like.
The invention has the following beneficial effects:
1) The invention takes the waste building ceramics and the waste mullite slab as raw materials to prepare the castable with excellent performance, realizes the reutilization of waste resources and has important social significance.
2) The castable prepared by the invention has excellent high temperature resistance, can reach the use temperature of about 1150 ℃, can effectively resist fly ash erosion, can be applied to cement kilns, CFB boilers, garbage incinerators, hazardous waste incinerators and other thermal equipment, and improves the operation stability of the equipment.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
The embodiment relates to a castable which is prepared from the following raw materials in parts by weight:
40 parts of waste building ceramics, 40 parts of waste mullite shed plates, 8 parts of bauxite, 7 parts of clay, 5 parts of aluminate cement and 0.17 part of an additive.
The castable material of the embodiment has the following properties:
example 2
The embodiment relates to a castable which is prepared from the following raw materials in parts by weight:
55 parts of waste building ceramics, 30 parts of waste mullite shed plates, 4 parts of bauxite, 5 parts of clay, 6 parts of aluminate cement and 0.22 part of an additive.
The castable material of the embodiment has the following properties:
example 3
The embodiment relates to a castable which is prepared from the following raw materials in parts by weight:
65 parts of waste building ceramics, 20 parts of waste mullite shed plates, 4 parts of bauxite, 4 parts of clay, 7 parts of aluminate cement and 0.27 part of an additive.
The castable material of the embodiment has the following properties:
although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A heat-resistant castable prepared from waste building ceramics and waste shed plates is characterized by comprising the following raw materials in parts by weight: 40-80 parts of waste building ceramics, 6-40 parts of waste mullite slabs, 3-10 parts of clay, 1-10 parts of bauxite, 2-8 parts of aluminate cement and 0.15-0.55 part of an additive.
The waste building ceramic is a common glazed tile sold in the market.
2. Such asThe refractory castable material according to claim 1, wherein the waste building ceramic is mullite, wherein Al is present 2 O 3 15 to 20 percent of the total content of the components are divided into coarse particles (10 to 35 meshes), medium particles (35 to 120 meshes), fine particles (120 to 200 meshes) and fine powder (less than 200 meshes).
3. The refractory castable material according to claim 1, wherein Al in the waste mullite decking is 2 O 3 The content of (A) is 60-70%.
4. The castable refractory according to claim 1, wherein the additive is one or more of water glass, sodium tripolyphosphate, sodium hexametaphosphate and aluminium dihydrogen phosphate.
5. The heat-resistant castable according to any one of claims 1 to 4, characterized in that the raw materials for preparing the heat-resistant castable comprise:
60-68 parts of waste building ceramic, 24-30 parts of waste mullite shed plate, 3-5 parts of bauxite, 3-4 parts of clay, 4-5 parts of aluminate cement and 0.25-0.30 part of additive;
the total amount of the waste building ceramics, the waste mullite shed plate, the bauxite, the clay and the aluminate cement is 100 parts.
6. The heat-resistant castable material according to any one of claims 1 to 3, wherein the raw materials for preparing the heat-resistant castable material comprise:
40 parts of waste building ceramics, 40 parts of waste mullite shed plates, 8 parts of bauxite, 7 parts of clay, 5 parts of aluminate cement and 0.17 part of an additive;
and/or 55 parts of waste building ceramics, 30 parts of waste mullite shed plates, 4 parts of bauxite, 5 parts of clay, 6 parts of aluminate cement and 0.22 part of an additive;
and/or 65 parts of waste building ceramics, 20 parts of waste mullite shed plates, 4 parts of bauxite, 4 parts of clay, 7 parts of aluminate cement and 0.27 part of an additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211481981.7A CN115710133A (en) | 2022-11-24 | 2022-11-24 | Method for preparing heat-resistant castable from waste building ceramics and waste mullite slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211481981.7A CN115710133A (en) | 2022-11-24 | 2022-11-24 | Method for preparing heat-resistant castable from waste building ceramics and waste mullite slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115710133A true CN115710133A (en) | 2023-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211481981.7A Pending CN115710133A (en) | 2022-11-24 | 2022-11-24 | Method for preparing heat-resistant castable from waste building ceramics and waste mullite slab |
Country Status (1)
| Country | Link |
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| CN (1) | CN115710133A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2986785B1 (en) * | 1998-10-14 | 1999-12-06 | 日立協和エンジニアリング株式会社 | Castable refractory and refractory brick using the same |
| CN102746003A (en) * | 2012-07-02 | 2012-10-24 | 浙江恒丰建材有限公司 | High-strength alkali-resistant refractory castable |
| CN104628402A (en) * | 2015-02-12 | 2015-05-20 | 宜兴市国强炉业有限公司 | Castable with high temperature resistance and wear resistance and preparation method thereof |
| CN109369201A (en) * | 2018-12-20 | 2019-02-22 | 无锡远能耐火材料有限公司 | Anticorrosive castable and preparation method thereof |
| CN114804827A (en) * | 2022-04-21 | 2022-07-29 | 北京金隅通达耐火技术有限公司 | Alkali-resistant castable based on waste building ceramics and preparation method and application thereof |
-
2022
- 2022-11-24 CN CN202211481981.7A patent/CN115710133A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2986785B1 (en) * | 1998-10-14 | 1999-12-06 | 日立協和エンジニアリング株式会社 | Castable refractory and refractory brick using the same |
| CN102746003A (en) * | 2012-07-02 | 2012-10-24 | 浙江恒丰建材有限公司 | High-strength alkali-resistant refractory castable |
| CN104628402A (en) * | 2015-02-12 | 2015-05-20 | 宜兴市国强炉业有限公司 | Castable with high temperature resistance and wear resistance and preparation method thereof |
| CN109369201A (en) * | 2018-12-20 | 2019-02-22 | 无锡远能耐火材料有限公司 | Anticorrosive castable and preparation method thereof |
| CN114804827A (en) * | 2022-04-21 | 2022-07-29 | 北京金隅通达耐火技术有限公司 | Alkali-resistant castable based on waste building ceramics and preparation method and application thereof |
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Application publication date: 20230224 |