CN202066345U - Smelting furnace suitable for copper alloy furnace liner - Google Patents
Smelting furnace suitable for copper alloy furnace liner Download PDFInfo
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- CN202066345U CN202066345U CN2011201225733U CN201120122573U CN202066345U CN 202066345 U CN202066345 U CN 202066345U CN 2011201225733 U CN2011201225733 U CN 2011201225733U CN 201120122573 U CN201120122573 U CN 201120122573U CN 202066345 U CN202066345 U CN 202066345U
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- furnace
- copper alloy
- smelting
- furnace lining
- zirconium
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Abstract
The utility model discloses a smelting furnace suitable for a copper alloy furnace liner. The smelting furnace comprises a furnace wall and a hearth inside the furnace wall, wherein a furnace liner made of a copper alloy furnace liner material is laid between the furnace wall and the hearth; and the thickness of the furnace liner is 20-40 millimeters. Due to the adoption of the smelting furnace, the sintering temperature of a furnace liner material is lowered, easy cracking is avoided, the service life is prolonged, and the yields of active elements are increased.
Description
Technical field
The utility model relates to metallurgical technology field, particularly relates to the smelting furnace of a kind of suitable copper alloy with furnace lining.
Background technology
Along with deepening continuously that metal material is studied, add elements such as calcium, magnesium, zirconium, aluminium, titanium, zinc, iron in the copper alloy and can significantly improve the performance of some aspect of material, thereby receive increasing concern.But, because this dvielement is very active, when melting these elements at high temperature with furnace lining or crucible material reaction commonly used, problem such as the recovery rate of element is low when causing melting, and alloying component is wayward in the fusion process.In some cases, adopt existing furnace lining material alloy melting not carry out.
For example, chromium zirconium copper has high intensity and favorable conductive, heat conductivility, therefore is widely used in high-strength, height and leads the field, as sintering bullet train contact wire, resistance welding electrode, conticaster crystallizer liner, circuit lead frame, contact material etc.And the suitability for industrialized production that contains zirconium copper alloy at first will solve the problem of alloy melting.Zr element is very active, and easy and other elements react and scaling loss, therefore must solve the burning problems of zr element when melting zirconium copper.Vacuum melting is adopted in the production of zirconium copper both at home and abroad usually, causes problems such as production efficiency is low, cost is high, and is little in batches, has limited the application of chromium zirconium copper.
Adopt the commercial frequency cored induction furnace smelting copper alloy, have easy to operately, firing rate is fast, saves electric energy, and cupola drop is convenient, and melting cost is low, is applicable to series of advantages such as continuous casting.Therefore, under the certain protection measure, adopt commercial frequency cored induction furnace atmosphere melting chromium zirconium copper to have very big practicality and economic worth.In addition, the scaling loss of the zirconium that causes in order to reduce because with crucible material reaction during the melting of chromium zirconium copper, generally adopts graphite or highly-purity magnesite crucible.Graphite can not be as the furnace lining material of commercial frequency cored induction furnace cupola drop.The general molten coppersmith channel induction furnace maximum temperature that can reach frequently is 1300～1400 ℃, and single highly-purity magnesite since sintering temperature more than 1700 ℃, therefore, magnesia is difficult to sintering on commercial frequency cored induction furnace.Therefore, must develop the novel furnace lining material of high stability, sintering temperature and low.
New by looking into, retrieve the relevant patent of following furnace lining material:
Application number is the patent of CN200710054710, relates to its raw material composition of a kind of magnesium gunning refractory for copper smelting-furnace and comprises aggregate, fine powder, bond and additive; The raw material of described aggregate and fine powder is formed and is comprised fused magnesia-chrome, fused magnesite, magnesite clinker, forsterite.The critical granularity of aggregate is 0.1～5mm, the granularity＜0.088mm of fine powder; Its weight ratio is: particle is the fused magnesia-chrome 0～20% of 3～5mm, magnesite clinker 10～30%, forsterite 0～20%; Particle is the magnesite clinker 10～40% of 1～3mm, forsterite 10～40%; Particle is the fused magnesite 0～20% of 0.1～1mm, magnesite clinker 5～20%, forsterite 5～20%; Granularity＜0.088mm fused magnesite 6～20%, forsterite 0～15%; Bond 5%～15%; Additive 6%～20%.This material is used for nonferrous metal smelting furnace lining large tracts of land or the part position of deteriorating is sprayed, repairs, magnesian gunning refractory in this application, compare with highly-purity magnesite commonly used and all to have the higher characteristics of sintering temperature, because this material is used for spray repair, there is not the sintering problem in this magnesian gunning refractory.
Application number is that CN94110946 discloses a kind of acid burner lining refractory material for induction furnace prescription.It is by the crystallite quartz, bond, and the mixture that mineralizer is formed is beaten reality through brickwork, and baker sinters the electric induction furnace acid lining into.Crystallite quartz wherein has following grating relation, and the content of the several 5～7# of mesh is 18～20%, and 10～20#'s is 18～22%, and 20～40#'s is 14～16%, and 50～100#'s is 19～21%, and 140～270#'s is 20～24%, and 600#'s is 2～4%; Bond adopts boric anhydride (0.6～1.2%), and mineralizer adopts cupric oxide (0.08～0.10%).This furnace lining material is main component with the quartz, at high temperature zirconium and quartz reaction, the significantly recovery rate of reduction zirconium.
Application number be CN200710006059 patent disclosure one Albatra metal-holding furnace body material prescription.Make furnace lining at adopting acid refractory, the easy slagging scorification of smelting copper alloy holding furnace, slagging scorification is difficult to cleaning, need the cycle of little cleaning slagging scorification short, clear up slagging scorification greatly and need shortcomings such as blowing out power failure, the utility model adopts one of magnesia carbon brick, Al2O3C Bricks, magnesia-alumina-carbon brick to make insulation furnace body material, 11.5～14.8 times of the cycle stretch-outs of the little cleaning of slagging scorification need, slagging scorification is easy to cleaning, no longer needs the operation of the big cleaning slagging scorification of blowing out power failure, enhances productivity greatly.This application preferably is fit to do with useless composition brass holding furnace, the continuous casting holding furnace of raw material sintered copper alloy liquation, also is fit to the smelting furnace body of heater material of copper alloy.
Summary of the invention
The purpose of this utility model provides the smelting furnace of a kind of suitable copper alloy with furnace lining in order to overcome above-mentioned the deficiencies in the prior art, has realized sintering at a lower temperature, and not easy to crack, has prolonged service life.
Technical solution of the present utility model is as follows:
A kind of suitable copper alloy smelting furnace of furnace lining, this smelting furnace comprises the burner hearth in furnace wall and the furnace wall, is characterized in: be equipped with the furnace lining of being made with furnace lining material by copper alloy between described furnace wall and burner hearth, the thickness of this furnace lining is 20～40mm.Copper alloy consists of with the percentage by weight of furnace lining material: granularity is the electric smelting MgO-ZrO of 500～2000um
280.00～90.00wt%; Granularity is high alumina sand 10.00～20.00wt% of 50～200um.
Described electric smelting MgO-ZrO
2Comprise MgO 90～98wt%; ZrO
22～10wt%; SiO
2Deng impurity≤2.0%.
Described high alumina sand contains SiO
2Deng impurity≤2.0%.
The sintering smelting copper alloy comprises the steps: with the method for furnace lining material
1. with described electric smelting MgO-ZrO
2Mix with described high alumina sand, and ramming is solid;
2. be warming up to 1200～1500 ℃, insulation 2～3h, the electric smelting MgO-ZrO that described ramming is crossed
2Sinter furnace lining material into high alumina sand.
Technique effect of the present utility model:
Compared with prior art, the utility model be suitable for copper alloy with the smelting furnace of furnace lining have that high-temperature stability is good, sintering temperature is low, not easy to crack, long service life can be used as the characteristics that melting contains the copper alloy of active element.
Description of drawings
Fig. 1 is varigrained magnesium zircon sand, high alumina sand sintering effect schematic diagram.
Fig. 2 is that the utility model is suitable for the structural representation of copper alloy with the smelting furnace of furnace lining.
Among the figure: 1-magnesium zircon sand; The 2-high alumina sand; The 3-furnace lining; The 4-furnace wall.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but should not limit protection domain of the present utility model with this.
Embodiment 1.
See also Fig. 2, Fig. 2 is that the utility model is suitable for the structural representation of copper alloy with the smelting furnace of furnace lining.As shown in the figure, a kind of suitable copper alloy smelting furnace of furnace lining, this smelting furnace comprises the burner hearth in furnace wall 4 and the furnace wall, is characterized in being equipped with between described furnace wall and burner hearth the furnace lining of being made with furnace lining material by copper alloy 3, the thickness L of this furnace lining 3 is 20mm.
This copper alloy consists of with the percentage by weight of furnace lining material: granularity is the electric smelting MgO-ZrO of 500～2000um
280.00wt%; Granularity is the high alumina sand 20.00wt% of 50～200um.
Described electric smelting MgO-ZrO
2Comprise MgO 90～98wt%; ZrO
22～10wt%; SiO
2Deng impurity≤2.0%.
Described high alumina sand contains SiO
2Deng impurity≤2.0%.
A kind of suitable copper alloy smelting furnace of furnace lining, this smelting furnace comprises the burner hearth in furnace wall 4 and the furnace wall, is characterized in being equipped with between described furnace wall and burner hearth the furnace lining of being made with furnace lining material by copper alloy 3, the thickness L of this furnace lining 3 is 40mm.
This copper alloy consists of the electric smelting MgO-ZrO that granularity is 500～2000um with the percentage by weight of furnace lining material
290.00wt%; Granularity is the high alumina sand 20.00wt% of 50～200um.
Described electric smelting MgO-ZrO
2Comprise MgO 90～98wt%; ZrO
22～10wt%; SiO
2Deng impurity≤2.0%.
Described high alumina sand contains SiO
2Deng impurity≤2.0%.
Low based on high alumina sand surface melt temperature, by electric smelting MgO-ZrO
2With the mixing ramming of high alumina sand, make between the magnesium zircon sand particle and fill high alumina sand, reduce the sintering temperature of whole furnace lining material.And the high alumina sand high-temperature stability is not high, at high temperature easily with copper liquid in active element reaction, in order to protect in the copper liquid vivaciously element, should reduce the content of high alumina sand in the furnace lining material as far as possible.The furnace lining material that the utility model proposes for the dual needs of realizing sintering and the active element of protection is to adopt less high alumina sand to be filled in the bigger magnesium zircon sand gap of granularity, as shown in Figure 1.
Below with the furnace lining material of the utility model embodiment 1-6; Granularity≤1000um, impurity content≤2.0% silica sand; Granularity≤1000um, impurity content≤2.0% high alumina sand; Granularity≤1000um, impurity content≤2.0% highly-purity magnesite; Contain MgO-ZrO
2The comparative material a of 95.0wt%, high alumina sand 15.00wt%; Contain MgO-ZrO
2The comparative material b of 75.0wt%, high alumina sand 25.00wt%; Be respectively applied on the vacuum induction melting furnace and experimentize.
(1) sintering character of material experiment: be heated to sintering under the different temperatures with graphite core, use the infrared radiation thermometer thermometric, it the results are shown in Table 1.
| Furnace lining material | Sintering temperature | The sintering situation |
| Embodiment 1 | 1200℃ | Well |
| |
1500℃ | Well |
| |
1200℃ | Well |
| |
1500℃ | Well |
| Embodiment 5 | 1200℃ | Well |
| Embodiment 6 | 1500℃ | Well |
| Silica sand | 1200℃ | Well |
| Silica sand | 1500℃ | Well |
| High alumina sand | 1200℃ | Well |
| High alumina sand | 1500℃ | Well |
| Highly-purity magnesite | 1200℃ | Sintering not |
| Highly-purity magnesite | 1500℃ | Sintering not |
| Highly-purity magnesite | 1700℃ | Well |
| Comparative material a | 1200℃ | Sintering is poor |
| Comparative material a | 1500℃ | Sintering is poor |
| Comparative material b | 1200℃ | Well |
| Comparative material b | 1500℃ | Well |
Table 1
(2) melting of zirconium copper alloy experiment: cathode copper is added in the stove that sinters, be warming up to copper and all melt, add the deoxidation of Mg copper, add and contain zirconium 20wt.% copper zirconium intermediate alloy.Stove is evacuated to≤10
-4Pa charges into argon gas, pressure 0.3～0.6 atmospheric pressure, and 1200～1300 ℃ of insulations down, insulation 0.5～1h cools off with stove.Calculate the recovery rate of zirconium according to the initial addition of the content of zirconium in the ingot casting and zirconium.
Calculating formula is: in the recovery rate=ingot casting of zirconium during the different furnace lining material melting of the initial adding content of the content/zirconium of zirconium zirconium copper the recovery rate of zirconium see Table 2.
| Furnace lining material | 0.5h the recovery rate of zirconium (%) | The recovery rate of 1h zirconium (%) |
| Embodiment 1 | 39 | 22 |
| |
43 | 23 |
| |
46 | 30 |
| |
46 | 28 |
| Embodiment 5 | 44 | 27 |
| Embodiment 6 | 42 | 26 |
| |
3 | ＜1 |
| High alumina sand | 5 | 1.3 |
| Highly-purity magnesite | 67 | 42 |
| Comparative material a | 53 | 37 |
| Comparative material b | 29 | 15 |
Table 2
By with the experimental verification of melting zirconium copper, with commonly used with SiO
2Or Al
2O
3Be that main furnace lining material is compared, significantly improved the recovery rate height of zirconium, the recovery rate after 1250 ℃ of following 1h are incubated improves about 20～30%.Smelting copper alloy of the present utility model is compared with single magnesia with furnace lining material simultaneously, reduced sintering temperature (being reduced to 1200 ℃) significantly from 1700 ℃, realized sintering (can reach this sintering temperature on the commercial frequency cored induction furnace) at a lower temperature, and be not easy cracking, prolonged service life.Utility model makes this copper alloy recovery rate of the smelting furnace of furnace lining from active element, and these several respects of service life and sintering all are better than existing smelting furnace.
Claims (1)
1. a suitable copper alloy is with the smelting furnace of furnace lining, and this smelting furnace comprises the burner hearth in furnace wall and the furnace wall, it is characterized in that: be equipped with the furnace lining of being made with furnace lining material by copper alloy between described furnace wall and burner hearth, the thickness of this furnace lining is 20 ~ 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201225733U CN202066345U (en) | 2011-04-25 | 2011-04-25 | Smelting furnace suitable for copper alloy furnace liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201225733U CN202066345U (en) | 2011-04-25 | 2011-04-25 | Smelting furnace suitable for copper alloy furnace liner |
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| Publication Number | Publication Date |
|---|---|
| CN202066345U true CN202066345U (en) | 2011-12-07 |
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| CN2011201225733U Expired - Fee Related CN202066345U (en) | 2011-04-25 | 2011-04-25 | Smelting furnace suitable for copper alloy furnace liner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788510A (en) * | 2012-08-21 | 2012-11-21 | 江西稀有稀土金属钨业集团有限公司 | Method for constructing vacuum induction melting furnace |
| CN105444574A (en) * | 2015-12-30 | 2016-03-30 | 中国第一汽车股份有限公司 | Pre-sintering monolithic lining of pit type gas furnace and preparation method |
-
2011
- 2011-04-25 CN CN2011201225733U patent/CN202066345U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788510A (en) * | 2012-08-21 | 2012-11-21 | 江西稀有稀土金属钨业集团有限公司 | Method for constructing vacuum induction melting furnace |
| CN103983113A (en) * | 2012-08-21 | 2014-08-13 | 江西稀有稀土金属钨业集团有限公司 | Building method for vacuum induction melting furnace |
| CN102788510B (en) * | 2012-08-21 | 2015-01-14 | 江西稀有稀土金属钨业集团有限公司 | Method for constructing vacuum induction melting furnace |
| CN103983113B (en) * | 2012-08-21 | 2016-03-23 | 江西稀有稀土金属钨业集团有限公司 | The brickwork method of vacuum induction melting furnace |
| CN105444574A (en) * | 2015-12-30 | 2016-03-30 | 中国第一汽车股份有限公司 | Pre-sintering monolithic lining of pit type gas furnace and preparation method |
| CN105444574B (en) * | 2015-12-30 | 2018-08-03 | 中国第一汽车股份有限公司 | It is pre-sintered well formula gas furnace monolithic lining and preparation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20120425 |