CN104200876A - Method for preparing magnesium oxide filler for fireproof cable - Google Patents
Method for preparing magnesium oxide filler for fireproof cable Download PDFInfo
- Publication number
- CN104200876A CN104200876A CN201410399701.7A CN201410399701A CN104200876A CN 104200876 A CN104200876 A CN 104200876A CN 201410399701 A CN201410399701 A CN 201410399701A CN 104200876 A CN104200876 A CN 104200876A
- Authority
- CN
- China
- Prior art keywords
- magnesium oxide
- oxide filler
- fireproof cable
- property
- powder
- Prior art date
- 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.)
- Pending
Links
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 26
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000945 filler Substances 0.000 title abstract 9
- 239000004576 sand Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 20
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 9
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 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 claims abstract description 9
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 9
- 235000006662 Lansium Nutrition 0.000 claims description 12
- 241001156382 Lansium Species 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000007885 magnetic separation Methods 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 239000002994 raw material Substances 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000011819 refractory material Substances 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000011810 insulating material Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002245 particle Substances 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
- 239000000654 additive Substances 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241001417490 Sillaginidae Species 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a method for preparing a magnesium oxide filler for a fireproof cable, relates to a magnesium oxide electrical insulating material and especially relates to a method for preparing the magnesium oxide filler for the fireproof cable. The method comprises the following steps of: preparing the magnesium oxide filler by adopting fused magnesium oxide yellow sand as a main raw material, and adding cordierite powder and mullite powder or their mixer. The method can be simply and easily implemented. The yellow sand is simple in production method and low in cost. Cordierite powder and mullite powder are regarded as excellent refractory materials and have the characteristics of uneven expansion, excellent thermal shock resistance, high loading and melting point, low high-temperature creep value, large hardness and excellent chemical resistance corrosion. The magnesium oxide filler has the excellent dielectric property, thus its insulating property is vastly superior to other fillers. The prepared magnesium oxide filler is greatly improved in the electrical property and insulating property, and the electric breakdown resistance property. Through the magnesium oxide filler, the problem of manufacturing the existing magnesium oxide filler for the fireproof cable is solved.
Description
Technical field
The present invention relates to electrothermal insulating magnesia material, specifically the preparation method of magnesium oxide packing material for a kind of fireproof cable.
Background technology
In manufacturing fireproof cable in process, its magnesium oxide inserts major part used needs import at present, and it is expensive, and the cost of manufacturing cable is high.And domestic at present best magnesium oxide inserts is to take white skin sand as primary raw material, in addition other additives are made.Although, lower than imported product, its insulation property and electrical property all do not reach desirable requirement in this magnesium oxide inserts price.And manufacturing process is complicated, white skin sand need be heated to 400 degrees Celsius with coordinating of other additives, and warm-up time need 1.5 hours.So, energy consumption and production cost have been increased again.
Summary of the invention
For above-mentioned situation, the object of this invention is to provide a kind of insulation property high, and the preparation method of magnesium oxide inserts for the simple cable of production technology, solve the problem that existing preparation method manufactures a product and exists.
Technical scheme of the present invention is as follows;
Technical formula
Preparation method
1, Calusena lansium sand is carried out to magnetic separation through the dry-type magnetic extractor of 9000～13000GS, remove iron and other impurity in material.
2, by material in the Calusena lansium sand after magnetic separation and other formulas, through stirring, make
Above cordierite powder and mullite powder are technical grade or SILVER REAGENT, and cordierite powder and mullite powder are for can be used alone with or mixing and use.The ratio of its mixing use 5: 5 each other.
Above-described white skin sand and Calusena lansium sand are electrically molten magnesia, (being commonly called as in the industry " white skin sand ", " Calusena lansium sand ") white skin sand is to adopt coal gas genetic method first to produce light-magnesite powder giobertite, after screening, adopting three-phase furnace electric smelting method to carry out secondary clacining again smelts electrically molten magnesia, through sub-electing the product of minimum class, is white skin sand.Calusena lansium sand is directly to adopt three-phase furnace electric smelting method to be once sintered into electrically molten magnesia giobertite, through sub-electing minimum class product, is Calusena lansium sand.
be below cost of material comparison sheet and indices test result comparison sheet
prices of raw and semifnished materials table of comparisons table one
| Sequence number | Project name | Unit (kilogram) | Unit price (unit) | Remarks |
| 1 | White skin sand | 1000 | 2250 | Production and processing finished product raw material is stand-by |
| 2 | Calusena lansium sand | 1000 | 1520 | Production and processing finished product raw material is stand-by |
raw material tap density and flow velocity table of comparisons table two
production technology table of comparisons table three
electric performance test table of comparisons table four
The inventive method is simple, easy to implement.The production method of Calusena lansium sand is simple, cheap.In addition use cordierite powder and mullite powder, this bi-material is the refractory material of high-quality, and it has the features such as expansion is even, thermal shock resistance is fabulous, load softening point is high, high-temerature creep value is little, hardness is large, resistance to chemical corrosion is good.Because have good dielectric property, its insulation property are better than other packing materials greatly.Therefore the magnesia powder producing has increased substantially electrical property and insulation property, and resistance to electrical breakdown capability has also obtained increasing substantially.Solved the problem existing in magnesium oxide inserts manufacture method for existing cable.
The present invention is without accompanying drawing
Embodiment
Embodiment 1
Get the Calusena lansium sand of 100kg, particle diameter is 0.075～0.25.Add mullite powder 1.5kg, cordierite powder 1.5kg.In batch mixer, be uniformly mixed.Make magnesium oxide inserts.
Embodiment 2
Get the Calusena lansium sand of 100kg, particle diameter is 0.08～0.2.Add mullite powder 3kg, in batch mixer, be uniformly mixed.Make magnesium oxide inserts.
Embodiment 3
Get the Calusena lansium sand of 100kg, particle diameter is 0.063～0.25.Add cordierite powder 4kg, in batch mixer, be uniformly mixed.Make magnesium oxide inserts.
Claims (2)
1. a preparation method for magnesium oxide inserts for fireproof cable, is characterized in that:
Technical formula
Preparation method
By material in the Calusena lansium sand after magnetic separation and other formulas, through stirring, make.
2. method according to claim 1, is characterized in that related cordierite powder and mullite powder are technical grade or SILVER REAGENT, and cordierite powder and mullite powder can be used alone or mix use, the ratio of its mixing use 5: 5 each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399701.7A CN104200876A (en) | 2014-08-09 | 2014-08-09 | Method for preparing magnesium oxide filler for fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399701.7A CN104200876A (en) | 2014-08-09 | 2014-08-09 | Method for preparing magnesium oxide filler for fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104200876A true CN104200876A (en) | 2014-12-10 |
Family
ID=52086152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410399701.7A Pending CN104200876A (en) | 2014-08-09 | 2014-08-09 | Method for preparing magnesium oxide filler for fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104200876A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285346A (en) * | 2017-06-28 | 2017-10-24 | 王禹成 | A kind of modification fused magnesium oxide powder increased the service life and preparation method thereof |
| CN108219504A (en) * | 2017-12-01 | 2018-06-29 | 安徽渡江电缆集团有限公司 | A kind of environment-friendly cable packing material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106831A (en) * | 1985-09-10 | 1987-03-11 | 卡尔文·舒鲍 | Composite materials for fire protection and insulation |
| CN1785909A (en) * | 2005-12-09 | 2006-06-14 | 陈文杨 | High-crystal structure cordierite-mullite kiln furniture, kiln refractory product and roasting process |
| CN103649158A (en) * | 2011-05-13 | 2014-03-19 | 陶氏环球技术有限责任公司 | Insulation formulations |
| CN103693973A (en) * | 2013-12-02 | 2014-04-02 | 武汉钢铁(集团)公司 | Refractory brick for dry-quenching coke oven and preparation method of refractory brick |
-
2014
- 2014-08-09 CN CN201410399701.7A patent/CN104200876A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106831A (en) * | 1985-09-10 | 1987-03-11 | 卡尔文·舒鲍 | Composite materials for fire protection and insulation |
| CN1785909A (en) * | 2005-12-09 | 2006-06-14 | 陈文杨 | High-crystal structure cordierite-mullite kiln furniture, kiln refractory product and roasting process |
| CN103649158A (en) * | 2011-05-13 | 2014-03-19 | 陶氏环球技术有限责任公司 | Insulation formulations |
| CN103693973A (en) * | 2013-12-02 | 2014-04-02 | 武汉钢铁(集团)公司 | Refractory brick for dry-quenching coke oven and preparation method of refractory brick |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285346A (en) * | 2017-06-28 | 2017-10-24 | 王禹成 | A kind of modification fused magnesium oxide powder increased the service life and preparation method thereof |
| CN107285346B (en) * | 2017-06-28 | 2019-07-16 | 王禹成 | A kind of modified electrical grade magnesium oxide powder with extended service life and preparation method thereof |
| CN108219504A (en) * | 2017-12-01 | 2018-06-29 | 安徽渡江电缆集团有限公司 | A kind of environment-friendly cable packing material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141210 |