CN108892486B - Explosion-proof castable - Google Patents
Explosion-proof castable Download PDFInfo
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- CN108892486B CN108892486B CN201810967269.5A CN201810967269A CN108892486B CN 108892486 B CN108892486 B CN 108892486B CN 201810967269 A CN201810967269 A CN 201810967269A CN 108892486 B CN108892486 B CN 108892486B
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- parts
- powder
- explosion
- vermiculite
- proof castable
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—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
- C04B35/10—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 aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/1015—Refractories from grain sized mixtures containing refractory metal compounds other than those covered by C04B35/103 - C04B35/106
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3256—Molybdenum oxides, molybdates or oxide forming salts thereof, e.g. cadmium molybdate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- 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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
Abstract
The invention relates to a castable, and particularly discloses an explosion-proof castable which comprises the following raw materials in parts by weight: 40-50 parts of first-grade alumina aggregate, 12-18 parts of first-grade alumina powder, 15-22 parts of modified vermiculite, 15-18 parts of nacrite powder, 7-11 parts of cement, 6-12 parts of molybdenum trioxide powder, 6-9 parts of hydrated alumina micro powder, 4-6 parts of silica fume, 2-5 parts of water reducing agent and 1-3 parts of coagulant. The invention has excellent anti-burst performance.
Description
Technical Field
The invention relates to a castable, and particularly relates to an explosion-proof castable.
Background
The castable is also called refractory castable, is a granular or powdery material prepared by adding a certain amount of bonding agent into refractory materials, has higher fluidity and is an unshaped refractory material molded by a pouring mode. Compared with other unshaped refractory materials, the castable has higher content of the bonding agent and water and better fluidity, so the application range of the castable is wider, and the used material and the bonding agent can be selected according to the use conditions. It can be directly cast into lining body, or cast or vibrated into prefabricated block. However, the existing castable is often low in explosion-proof performance, and the service life of the castable is shortened.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an explosion-proof castable. The invention has excellent anti-burst performance.
The invention provides an explosion-proof castable which comprises the following raw materials in parts by weight: 40-50 parts of first-grade alumina aggregate, 12-18 parts of first-grade alumina powder, 15-22 parts of modified vermiculite, 15-18 parts of nacrite powder, 7-11 parts of cement, 6-12 parts of molybdenum trioxide powder, 6-9 parts of hydrated alumina micro powder, 4-6 parts of silica fume, 2-5 parts of water reducing agent and 1-3 parts of coagulant.
Preferably, the preparation method of the modified vermiculite comprises the following steps: and (3) uniformly mixing sodium alginate powder and vermiculite powder, adding a calcium chloride solution, carrying out water bath reaction under stirring, filtering, drying a filter cake, grinding and sieving to obtain the modified vermiculite.
Preferably, the mass ratio of the sodium alginate powder to the vermiculite powder to the calcium chloride solution is 1: 0.5-1.5: 20-50.
Preferably, the mass fraction of the calcium chloride solution is 45-70 wt%.
Preferably, the temperature of the water bath reaction is 45-65 ℃ and the time is 35-50 min.
Preferably, in the water bath reaction, the stirring speed is 400-550 r/min.
Preferably, the drying temperature is 75-90 ℃ and the drying time is 45-70 min.
Preferably, the grinding and sieving is 300-500 mesh sieving.
The invention can be prepared according to the conventional method.
The raw materials of the invention comprise first-grade alumina aggregate, first-grade alumina powder, modified vermiculite, nacrite powder, cement, molybdenum trioxide powder, hydrated alumina micropowder, silica fume, water reducing agent and coagulant, the compatibility of the raw materials is good, the raw materials can be endowed with good basic performance after the coordination, in the preferred scheme, sodium alginate and vermiculite are stirred and reacted in calcium chloride aqueous solution in the preparation process of the modified vermiculite, sodium ions in the sodium alginate can perform ion exchange reaction with calcium ions to form a network structure, then active groups on the surface of the sodium alginate and hydroxyl groups on the surface of the vermiculite perform cross-linking reaction to obtain a compound with a three-dimensional network structure, the strength and mechanical property of the compound can be effectively improved, in addition, in the barbecue process of the invention, the sodium alginate can be heated and melted or burnt to form fine long and narrow air holes along with the rise of temperature, the air permeability is improved, the internal stress is reduced, and the sodium alginate is melted quickly, so that the melt is low in viscosity, the water-gas channel can be opened quickly, the problems of bulging and bursting are avoided, the explosion-proof effect is optimized remarkably, and the service life of the whole anti-explosion device is prolonged. Experiments prove that compared with the prior art, the explosion-proof performance of the invention is improved by 20-25%.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
An explosion-proof castable comprises the following raw materials in parts by weight: 40 parts of first-grade alumina aggregate, 18 parts of first-grade alumina powder, 15 parts of modified vermiculite, 18 parts of nacrite powder, 7 parts of cement, 12 parts of molybdenum trioxide powder, 6 parts of hydrated alumina micro powder, 6 parts of silica fume, 2 parts of water reducing agent and 3 parts of coagulant.
Example 2
An explosion-proof castable comprises the following raw materials in parts by weight: 50 parts of first-grade alumina aggregate, 12 parts of first-grade alumina powder, 22 parts of modified vermiculite, 15 parts of nacrite powder, 11 parts of cement, 6 parts of molybdenum trioxide powder, 9 parts of hydrated alumina micro powder, 4 parts of silica fume, 5 parts of water reducing agent and 1 part of coagulant;
the preparation method of the modified vermiculite comprises the following steps: and (3) uniformly mixing sodium alginate powder and vermiculite powder, adding a calcium chloride solution, carrying out water bath reaction under stirring, filtering, drying a filter cake, grinding and sieving to obtain the modified vermiculite.
Example 3
An explosion-proof castable comprises the following raw materials in parts by weight: 45 parts of first-grade alumina aggregate, 15 parts of first-grade alumina powder, 19 parts of modified vermiculite, 16.5 parts of nacrite powder, 9 parts of cement, 9 parts of molybdenum trioxide powder, 7.5 parts of hydrated alumina micro powder, 5 parts of silica fume, 3.5 parts of water reducing agent and 2 parts of coagulant;
the preparation method of the modified vermiculite comprises the following steps: mixing sodium alginate powder and vermiculite powder uniformly, adding calcium chloride solution, performing water bath reaction under stirring, filtering, drying filter cake, grinding and sieving to obtain modified vermiculite;
the mass ratio of the sodium alginate powder to the vermiculite powder to the calcium chloride solution is 1: 1: 35;
the mass fraction of the calcium chloride solution is 55 wt%;
the temperature of the water bath reaction is 55 ℃, and the time is 45 min;
in the water bath reaction, the stirring speed is 500 r/min;
the drying temperature is 80 ℃, and the drying time is 55 min;
the grinding and sieving are 400-mesh sieving.
Example 4
An explosion-proof castable comprises the following raw materials in parts by weight: 42 parts of first-level alumina aggregate, 13 parts of first-level alumina powder, 17 parts of modified vermiculite, 16 parts of nacrite powder, 8 parts of cement, 8 parts of molybdenum trioxide powder, 7 parts of hydrated alumina micro powder, 4.5 parts of silica fume, 3 parts of a water reducing agent and 1.5 parts of a coagulant;
the preparation method of the modified vermiculite comprises the following steps: mixing sodium alginate powder and vermiculite powder uniformly, adding calcium chloride solution, performing water bath reaction under stirring, filtering, drying filter cake, grinding and sieving to obtain modified vermiculite;
the mass ratio of the sodium alginate powder to the vermiculite powder to the calcium chloride solution is 1: 0.5: 50;
the mass fraction of the calcium chloride solution is 45 wt%;
the temperature of the water bath reaction is 65 ℃, and the time is 35 min;
in the water bath reaction, the stirring speed is 550 r/min;
the drying temperature is 75 ℃, and the drying time is 70 min;
the grinding and sieving are 300 mesh sieves.
Example 5
An explosion-proof castable comprises the following raw materials in parts by weight: 47 parts of first-grade alumina aggregate, 16 parts of first-grade alumina powder, 20 parts of modified vermiculite, 17 parts of nacrite powder, 10 parts of cement, 11 parts of molybdenum trioxide powder, 8 parts of hydrated alumina micro powder, 5.5 parts of silica fume, 4 parts of water reducing agent and 2.5 parts of coagulant;
the preparation method of the modified vermiculite comprises the following steps: mixing sodium alginate powder and vermiculite powder uniformly, adding calcium chloride solution, performing water bath reaction under stirring, filtering, drying filter cake, grinding and sieving to obtain modified vermiculite;
the mass ratio of the sodium alginate powder to the vermiculite powder to the calcium chloride solution is 1: 1.5: 20;
the mass fraction of the calcium chloride solution is 70 wt%;
the temperature of the water bath reaction is 45 ℃ and the time is 50 min;
in the water bath reaction, the stirring speed is 400 r/min;
the drying temperature is 90 ℃ and the drying time is 45 min;
the grinding and sieving are 500-mesh sieving.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The explosion-proof castable is characterized by comprising the following raw materials in parts by weight: 40-50 parts of first-level alumina aggregate, 12-18 parts of first-level alumina powder, 15-22 parts of modified vermiculite, 15-18 parts of nacrite powder, 7-11 parts of cement, 6-12 parts of molybdenum trioxide powder, 6-9 parts of hydrated alumina micro powder, 4-6 parts of silica fume, 2-5 parts of water reducing agent and 1-3 parts of coagulant; the preparation method of the modified vermiculite comprises the following steps: mixing sodium alginate powder and vermiculite powder uniformly, adding calcium chloride solution, performing water bath reaction under stirring, filtering, drying filter cake, grinding and sieving to obtain modified vermiculite; wherein the mass ratio of the sodium alginate powder to the vermiculite powder to the calcium chloride solution is 1: 0.5-1.5: 20-50.
2. The explosion-proof castable according to claim 1, wherein the mass fraction of the calcium chloride solution is 45-70 wt%.
3. The explosion-proof castable according to claim 1, wherein the temperature of the water bath reaction is 45-65 ℃ and the time is 35-50 min.
4. The explosion-proof castable as claimed in claim 1, wherein the stirring speed in the water bath reaction is 400-550 r/min.
5. The explosion-proof castable material as claimed in claim 1, wherein the drying temperature is 75-90 ℃ and the drying time is 45-70 min.
6. The explosion-proof castable according to claim 1, wherein the grinding and sieving is 300-mesh and 500-mesh sieving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810967269.5A CN108892486B (en) | 2018-08-23 | 2018-08-23 | Explosion-proof castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810967269.5A CN108892486B (en) | 2018-08-23 | 2018-08-23 | Explosion-proof castable |
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| Publication Number | Publication Date |
|---|---|
| CN108892486A CN108892486A (en) | 2018-11-27 |
| CN108892486B true CN108892486B (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810967269.5A Active CN108892486B (en) | 2018-08-23 | 2018-08-23 | Explosion-proof castable |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450024A (en) * | 2003-05-09 | 2003-10-22 | 宜兴天霸非金属材料有限公司 | Refractory casting material |
| CN1686904A (en) * | 2005-03-28 | 2005-10-26 | 郑州祥通耐火陶瓷有限公司 | Composite heat insulating material of vermiculite and method of application thereof |
| CN102452836A (en) * | 2010-10-28 | 2012-05-16 | 宝山钢铁股份有限公司 | Cement-free aluminum-magnesium castable for rapidly baking ladle |
| EP2565173A1 (en) * | 2011-09-02 | 2013-03-06 | Calderys France | Castable refractory composition |
| CN104291844A (en) * | 2014-09-29 | 2015-01-21 | 吴雪健 | Method for preparing long-service-life taphole mud sleeve for blast furnace |
| CN105330311A (en) * | 2015-11-03 | 2016-02-17 | 山国强 | Castable |
| CN106431425A (en) * | 2015-07-02 | 2017-02-22 | 张婷 | Working layer castable |
| CN107537290A (en) * | 2017-10-16 | 2018-01-05 | 王金华 | A kind of preparation method of compound-dehumidifying agent |
-
2018
- 2018-08-23 CN CN201810967269.5A patent/CN108892486B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450024A (en) * | 2003-05-09 | 2003-10-22 | 宜兴天霸非金属材料有限公司 | Refractory casting material |
| CN1686904A (en) * | 2005-03-28 | 2005-10-26 | 郑州祥通耐火陶瓷有限公司 | Composite heat insulating material of vermiculite and method of application thereof |
| CN102452836A (en) * | 2010-10-28 | 2012-05-16 | 宝山钢铁股份有限公司 | Cement-free aluminum-magnesium castable for rapidly baking ladle |
| EP2565173A1 (en) * | 2011-09-02 | 2013-03-06 | Calderys France | Castable refractory composition |
| CN104291844A (en) * | 2014-09-29 | 2015-01-21 | 吴雪健 | Method for preparing long-service-life taphole mud sleeve for blast furnace |
| CN106431425A (en) * | 2015-07-02 | 2017-02-22 | 张婷 | Working layer castable |
| CN105330311A (en) * | 2015-11-03 | 2016-02-17 | 山国强 | Castable |
| CN107537290A (en) * | 2017-10-16 | 2018-01-05 | 王金华 | A kind of preparation method of compound-dehumidifying agent |
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| CN108892486A (en) | 2018-11-27 |
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Denomination of invention: An explosion-proof castable Effective date of registration: 20220914 Granted publication date: 20210604 Pledgee: Ningguo Anhui rural commercial bank Limited by Share Ltd. Pledgor: ANHUI RUITAI NEW MATERIAL TECHNOLOGY Co.,Ltd. Registration number: Y2022990000633 |