CN112479686A - Hard zirconium heat-insulating material and preparation method thereof - Google Patents
Hard zirconium heat-insulating material and preparation method thereof Download PDFInfo
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- 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
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Abstract
The invention provides a zirconium hard heat insulation material which comprises the following components in parts by weight: zircon sand, mica, corundum sand, alumina powder, floating beads and high alumina bauxite powder. The invention relates to a method for manufacturing a zirconium hard thermal insulation material, which takes zircon sand, mica, corundum sand, alumina powder, floating beads and high-alumina powder as main components, and the components are reasonably compatible, so that the prepared zirconium hard thermal insulation material is used for a thermal insulation layer of a thermal pipeline bracket and has the advantages of high temperature resistance, high compression and breaking strength, low heat conduction, good stability and no corrosion.
Description
Technical Field
The invention relates to a hard heat-insulating material, in particular to a zirconium hard heat-insulating material and a preparation method thereof.
Background
The hard heat insulation layer of the existing pipeline heat insulation support is generally made of casting materials or magnesium steel, but the casting materials are easy to crack and resistant to low temperature, and can be powdered in a long-time high-temperature state; the magnesium steel has low compressive strength and can corrode the pipeline at the joint of the magnesium steel and the pipeline for a long time.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for manufacturing a zirconium hard heat insulation material, which has the advantages of high temperature resistance, high compression and rupture strength, low heat conduction, good stability and no corrosion. The technical scheme adopted by the invention is as follows:
a hard zirconium heat-insulating material comprises the following components in parts by weight: 7-12 parts of zircon sand, 5-8 parts of mica, 10-15 parts of corundum sand, 15-20 parts of alumina powder, 8-15 parts of floating beads and 25-30 parts of high-alumina powder.
A preparation method of a zirconium hard heat insulation material comprises the following steps:
(1) removing metal impurities contained in the raw materials by using a dry magnetic separator for zircon sand, mica and corundum sand;
(2) pouring the treated raw materials into a stirrer according to the proportion of 7-12 parts of zircon sand, 5-8 parts of mica, 10-15 parts of corundum sand, 15-20 parts of alumina powder, 8-15 parts of floating beads and 25-30 parts of high-alumina fine powder for dry mixing, and then adding 10-15 parts of water for fully stirring for 15-20 min;
(3) pouring the mixed raw materials into a mold, and pressing the raw materials by a press to prepare a semi-finished product;
(4) pushing the pressed semi-finished product into a drying room for drying until the moisture in the semi-finished product is basically volatilized;
(5) and (4) putting the dried product into a kiln, firing at high temperature, taking out of the kiln, and cooling the finished product to obtain the product.
Preferably, in the method for preparing the hard zirconium heat-insulating material, the dry mixing time in the step (2) is 5-8 min.
Preferably, the preparation method of the zirconium hard heat-insulating material is characterized in that the semi-finished product in the step (4) is dried in a drying room for 7-10 days.
Preferably, in the preparation method of the hard zirconium heat-insulating material, the firing temperature in the step (5) is 1300-1400 ℃, and the firing time is 24-48 h.
The invention has the advantages that: the invention relates to a method for manufacturing a zirconium hard thermal insulation material, which takes zircon sand, mica, corundum sand, alumina powder, floating beads and high-alumina powder as main components, and the components are reasonably compatible, so that the prepared zirconium hard thermal insulation material is used for a thermal insulation layer of a thermal pipeline bracket and has the advantages of high temperature resistance, high compression and breaking strength, low heat conduction, good stability and no corrosion.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
A hard zirconium heat-insulating material comprises the following components in parts by weight: 7 parts of zircon sand, 5 parts of mica, 10 parts of corundum sand, 15 parts of alumina powder, 8 parts of floating beads and 25 parts of high alumina bauxite powder.
A preparation method of a zirconium hard heat insulation material comprises the following steps:
(1) removing metal impurities contained in the raw materials by using a dry magnetic separator for zircon sand, mica and corundum sand;
(2) pouring the processed raw materials into a stirrer according to the proportion of 7 parts of zircon sand, 5 parts of mica, 10 parts of corundum sand, 15 parts of alumina powder, 8 parts of floating beads and 25 parts of high-alumina fine powder for dry mixing for 5min, and then adding 10 parts of water for fully stirring for 15 min;
(3) pouring the mixed raw materials into a mold, and pressing the raw materials by a press to prepare a semi-finished product;
(4) pushing the pressed semi-finished product into a drying room for drying until the moisture in the semi-finished product is basically volatilized, wherein the drying time of the semi-finished product in the drying room is 7 days;
(5) and (3) putting the dried product into a kiln, firing at the high temperature, taking the product out of the kiln, wherein the firing temperature is 1300 ℃, the firing time is 36h, and cooling the finished product to obtain the product.
Example 2
The hard zirconium heat-insulating material is characterized by comprising the following components in parts by weight: 10 parts of zircon sand, 6 parts of mica, 12 parts of corundum sand, 17 parts of alumina powder, 12 parts of floating beads and 26 parts of high-alumina bauxite powder.
A preparation method of a zirconium hard heat insulation material comprises the following steps:
(1) removing metal impurities contained in the raw materials by using a dry magnetic separator for zircon sand, mica and corundum sand;
(2) pouring the processed raw materials into a stirrer according to the proportion of 10 parts of zircon sand, 6 parts of mica, 12 parts of corundum sand, 17 parts of alumina powder, 12 parts of floating beads and 26 parts of high-alumina fine powder for dry mixing for 7min, and then adding 12 parts of water for fully stirring for 18 min;
(3) pouring the mixed raw materials into a mold, and pressing the raw materials by a press to prepare a semi-finished product;
(4) pushing the pressed semi-finished product into a drying room for drying until the moisture in the semi-finished product is basically volatilized, wherein the drying time of the semi-finished product in the drying room is 8 days;
(5) and (3) putting the dried product into a kiln, firing at a high temperature, taking the product out of the kiln, wherein the firing temperature is 1350 ℃, the firing time is 24 hours, and cooling the finished product to obtain the product.
Example 3
A hard zirconium heat-insulating material comprises the following components in parts by weight: 12 parts of zircon sand, 8 parts of mica, 15 parts of corundum sand, 20 parts of alumina powder, 15 parts of floating beads and 30 parts of high-alumina powder.
A preparation method of a zirconium hard heat insulation material comprises the following steps:
(1) removing metal impurities contained in the raw materials by using a dry magnetic separator for zircon sand, mica and corundum sand;
(2) pouring the processed raw materials into a stirrer according to the proportion of 12 parts of zircon sand, 8 parts of mica, 15 parts of corundum sand, 20 parts of alumina powder, 15 parts of floating beads and 30 parts of high-alumina fine powder for dry mixing for 8min, and then adding 15 parts of water for fully stirring for 20 min;
(3) pouring the mixed raw materials into a mold, and pressing the raw materials by a press to prepare a semi-finished product;
(4) pushing the pressed semi-finished product into a drying room for drying until the moisture in the semi-finished product is basically volatilized, wherein the drying time of the semi-finished product in the drying room is 10 days;
(5) and (3) putting the dried product into a kiln, firing at a high temperature, taking the product out of the kiln, wherein the firing temperature is 1350 ℃, the firing time is 48 hours, and cooling the finished product to obtain the product.
The results of the performance tests for examples 1-3 are set forth below:
the hard zirconium heat-insulating material is mainly used for a heat-insulating layer of a heating pipeline bracket, and has the advantages of high temperature resistance, high compression and bending strength, low heat conduction, good stability and no corrosion.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. The hard zirconium heat-insulating material is characterized by comprising the following components in parts by weight: 7-12 parts of zircon sand, 5-8 parts of mica, 10-15 parts of corundum sand, 15-20 parts of alumina powder, 8-15 parts of floating beads and 25-30 parts of high-alumina powder.
2. The preparation method of the zirconium hard heat insulation material is characterized by comprising the following steps:
(1) removing metal impurities contained in the raw materials by using a dry magnetic separator for zircon sand, mica and corundum sand;
(2) pouring the treated raw materials into a stirrer according to the proportion of 7-12 parts of zircon sand, 5-8 parts of mica, 10-15 parts of corundum sand, 15-20 parts of alumina powder, 8-15 parts of floating beads and 25-30 parts of high-alumina fine powder for dry mixing, and then adding 10-15 parts of water for fully stirring for 15-20 min;
(3) pouring the mixed raw materials into a mold, and pressing the raw materials by a press to prepare a semi-finished product;
(4) pushing the pressed semi-finished product into a drying room for drying until the moisture in the semi-finished product is basically volatilized;
(5) and (4) putting the dried product into a kiln, firing at high temperature, taking out of the kiln, and cooling the finished product to obtain the product.
3. The method according to claim 2, wherein the dry-mixing time in step (2) is 5-8 min.
4. The method for preparing the zirconium hard heat-insulating material according to claim 2, wherein the semi-finished product in the step (4) is dried in a drying room for 7-10 days.
5. The method according to claim 2, wherein the firing temperature in the step (5) is 1300 ℃ to 1400 ℃ and the firing time is 24 to 48 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011373058.2A CN112479686A (en) | 2020-11-30 | 2020-11-30 | Hard zirconium heat-insulating material and preparation method thereof |
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| CN202011373058.2A CN112479686A (en) | 2020-11-30 | 2020-11-30 | Hard zirconium heat-insulating material and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4678758A (en) * | 1983-02-11 | 1987-07-07 | Swiss Aluminum Ltd. | Porous ceramic filter body and manufacturing method therefor |
| CN104003696A (en) * | 2008-09-29 | 2014-08-27 | 西门子公司 | Material composition for producing a fireproof material and the use thereof, and fireproof moulding body and method for the production thereof |
| CN108530088A (en) * | 2017-03-02 | 2018-09-14 | 洛阳利尔耐火材料有限公司 | A kind of zirconium-containing alumina hollow ball insulating brick and preparation method thereof |
| CN109851328A (en) * | 2019-02-15 | 2019-06-07 | 江苏埃梯恩膜过滤技术有限公司 | A kind of preparation process of high-performance ceramic flat membrane support |
| CN110963807A (en) * | 2019-11-28 | 2020-04-07 | 浙江锦诚新材料股份有限公司 | Energy-saving mullite refractory brick for cement kiln transition zone and preparation method thereof |
| CN111362672A (en) * | 2020-03-24 | 2020-07-03 | 合肥汉甲陶瓷科技有限公司 | Preparation process of bauxite-based ceramic filler |
-
2020
- 2020-11-30 CN CN202011373058.2A patent/CN112479686A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4678758A (en) * | 1983-02-11 | 1987-07-07 | Swiss Aluminum Ltd. | Porous ceramic filter body and manufacturing method therefor |
| CN104003696A (en) * | 2008-09-29 | 2014-08-27 | 西门子公司 | Material composition for producing a fireproof material and the use thereof, and fireproof moulding body and method for the production thereof |
| CN108530088A (en) * | 2017-03-02 | 2018-09-14 | 洛阳利尔耐火材料有限公司 | A kind of zirconium-containing alumina hollow ball insulating brick and preparation method thereof |
| CN109851328A (en) * | 2019-02-15 | 2019-06-07 | 江苏埃梯恩膜过滤技术有限公司 | A kind of preparation process of high-performance ceramic flat membrane support |
| CN110963807A (en) * | 2019-11-28 | 2020-04-07 | 浙江锦诚新材料股份有限公司 | Energy-saving mullite refractory brick for cement kiln transition zone and preparation method thereof |
| CN111362672A (en) * | 2020-03-24 | 2020-07-03 | 合肥汉甲陶瓷科技有限公司 | Preparation process of bauxite-based ceramic filler |
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Application publication date: 20210312 |