CN101423399A - Method for producing furnace bladder material - Google Patents
Method for producing furnace bladder material Download PDFInfo
- Publication number
- CN101423399A CN101423399A CNA2007101578451A CN200710157845A CN101423399A CN 101423399 A CN101423399 A CN 101423399A CN A2007101578451 A CNA2007101578451 A CN A2007101578451A CN 200710157845 A CN200710157845 A CN 200710157845A CN 101423399 A CN101423399 A CN 101423399A
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- China
- Prior art keywords
- magnesia
- furnace
- mixture
- zirconite
- bauxite
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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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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention provides a method for producing an internal furnace material, which relates to the improvement on the internal furnace material for producing an induction electric furnace. The aim of the invention is to overcome the defect that the prior internal furnace material has inadequate performance and to provide the internal furnace material with acid resistance, alkali resistance and difficult generation of a glass phase. The method adopts the following: 1. a step of thick material pulverization, which is to pulverize 5 weight portions of magnesia, 40 weight portions of bauxite and 34 weight portions of zirconia (or zirconite) respectively, wherein the pulverization granularity is between 0.04 and 20 millimeters; 2. a step of magnetic separation treatment, which is to perform magnetic separation treatment on the pulverized magnesia, bauxite and zirconia (or zirconite) to remove iron magnetic substances therein; 3. a step of screening classification, which is to screen out the magnesia, the bauxite and the zirconia (or the zirconite) with the required granularity; 4. a step of mixing treatment, which is to proportionally mix the magnesia, the bauxite and the zirconia (or the zirconite) according to the effective components, add a bonding agent which is 0.5 to 10 percent of the total weight of the mixture and proper quantity of additive into the mixture, stir the mixture evenly, then add small amount of water into the mixture, and stir the mixture evenly; 5. a step of molding, which is to weigh the stirred fire-resisting material, and compact, mold and demold the material in a furnace lining mold; and 6. a step of drying and heat treatment, which is to perform heat treatment on the molded furnace lining at a temperature of between 60 and 600 DEG C for 3 to 4 hours so as to obtain the internal furnace material.
Description
The present invention is the improvement that belongs to the furnace bladder material of producing induction furnace.
At present employed furnace bladder material has three kinds of acidity, neutrality, alkalescence on the induction furnace.Acid material is with silicon-dioxide (SiO
2) be main, abbreviate siliceous refractory [material as; Neutral material abbreviates aluminum fire resistant materials as based on aluminum oxide: basic material abbreviates magnesite refractory as based on magnesium oxide.In the use, all there are some problems.Its refractory temperature of siliceous refractory [material is lower, and high temperature resistance does not corrode but can resist acid slag; But the resistivity to basic slag is poor, smelting stainless steel especially, and materials such as high mangaenese steel, effect is bad; Magnesite refractory, the refractory temperature height, alkali-resistivity scouring, but not resistance to acid scouring, particularly since the magnesium oxide thermal expansivity big, thermal shock resistance is bad, magnesia flue very easily ftracture and furnace life not high; Aluminum fire resistant materials belongs to neutral, and acid, alkaline residue are all had erosion-resisting characteristics preferably, but at high temperature generates glassy phase easily and cause furnace life not long.
Summary of the invention:
Purpose of the present invention is exactly the performance deficiency that overcomes existing furnace bladder material, and a kind of acidproof, alkaline-resisting furnace bladder material that is difficult for generating glassy phase again is provided.
The present invention adopts following technical scheme:
1, thick material is pulverized: with 5 parts of magnesia of weight meter, 40 parts of bauxitic clays, 34 parts of zirconium whites (or zircon), pulverize respectively, the granularity of pulverizing is 0.04 millimeter～20 millimeters;
2, magnetic separation is handled: the magnesia after will pulverizing, bauxitic clay, zirconium white (or zircon) carry out magnetic separation respectively to be handled, and removes ferromagnetic material wherein;
3, sieving and grading; Filter out magnesia, bauxitic clay and the zirconium white (or zircon) of desired particle size;
4, combination treatment: magnesia, bauxitic clay, zirconium white (or zircon) by above-mentioned effective constituent mixed, are added 0.5～10% wedding agent of compound gross weight and an amount of additive again, puddle evenly, add a spot of water then, puddle again evenly;
5, moulding: the refractory materials that stirs is weighed compacting in the flue mould of setting fire, moulding rear demoulding;
6, drying and thermal treatment: the furnace lining of moulding was heat-treated 3～4 hours under 60 ℃～600 ℃.
Beneficial effect of the present invention:
Magnesium oxide and aluminum oxide are heated to about 1500 ℃ and generate magnesium-aluminium spinel.Magnesium-aluminium spinel belongs to neutral, has well antiacid, alkali-resistivity.
Zirconium white also is good refractory materials.
Magnesium oxide, aluminum oxide, zirconium white at high temperature generate sosoloid.This sosoloid has fabulous chemical stability, has the chemical erosion performance of extremely strong acid-and base-resisting, salts solution, and the fusing point height, and thermal shock resistance is good.Life-span in furnace life with the moulding flue of this material produce improves more than three times than general flue.
For example, the mountain is extensively contained the former flue of sports equipment company and is used heat 90～100 stoves in the joint venture of center, the Guangdong beginning of this year, use flue of the present invention after, the furnace wall has reduced 1/3rd, furnace life can also reach 130～140 stoves.
For another example, Guangdong former flue in spring furnace life is 70～80 stoves, uses flue of the present invention instead and can reach 150 stoves.
Claims (7)
1, a kind of production method of furnace bladder material is characterized in that adopting following steps:
(1), thick material is pulverized: with 5 parts of magnesia of weight meter, 40 parts of bauxitic clays, 34 parts of zirconium whites, pulverize respectively, the granularity of pulverizing is 0.04 millimeter～20 millimeters;
(2), magnetic separation is handled: the magnesia after will pulverizing, bauxitic clay, zirconium white carry out magnetic separation respectively to be handled, and removes ferromagnetic material wherein;
(3), sieving and grading; Filter out magnesia, bauxitic clay and the zirconium white of desired particle size;
(4), combination treatment: magnesia, bauxitic clay, zirconium white by above-mentioned effective constituent mixed, are added 0.5～10% wedding agent of compound gross weight and an amount of additive again, puddle evenly, add a spot of water then, puddle again evenly;
(5), moulding: the refractory materials that stirs is weighed compacting in the flue mould of setting fire, moulding rear demoulding;
(6), drying and thermal treatment: the furnace lining of moulding was heat-treated 3～4 hours under 60 ℃～600 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101578451A CN101423399A (en) | 2007-10-31 | 2007-10-31 | Method for producing furnace bladder material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101578451A CN101423399A (en) | 2007-10-31 | 2007-10-31 | Method for producing furnace bladder material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101423399A true CN101423399A (en) | 2009-05-06 |
Family
ID=40614310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101578451A Pending CN101423399A (en) | 2007-10-31 | 2007-10-31 | Method for producing furnace bladder material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101423399A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206085A (en) * | 2011-03-31 | 2011-10-05 | 上海理工大学 | Novel furnace lining material used for smelting copper alloy and preparation method thereof |
| CN107522485A (en) * | 2017-08-24 | 2017-12-29 | 浙江科屹耐火材料有限公司 | A kind of spinel fibre oxidation Zr refractory material and its preparation technology |
-
2007
- 2007-10-31 CN CNA2007101578451A patent/CN101423399A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206085A (en) * | 2011-03-31 | 2011-10-05 | 上海理工大学 | Novel furnace lining material used for smelting copper alloy and preparation method thereof |
| CN107522485A (en) * | 2017-08-24 | 2017-12-29 | 浙江科屹耐火材料有限公司 | A kind of spinel fibre oxidation Zr refractory material and its preparation technology |
| CN107522485B (en) * | 2017-08-24 | 2020-09-01 | 马长江 | Spinel fiber reinforced zirconia refractory material and preparation process thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090506 |