CN1702181A - Smelting method for non-ferrous metal - Google Patents
Smelting method for non-ferrous metal Download PDFInfo
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- CN1702181A CN1702181A CN 200510075714 CN200510075714A CN1702181A CN 1702181 A CN1702181 A CN 1702181A CN 200510075714 CN200510075714 CN 200510075714 CN 200510075714 A CN200510075714 A CN 200510075714A CN 1702181 A CN1702181 A CN 1702181A
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Abstract
The invention discloses a method for smelting nonferrous metal, which contains: adding nonferrous metallic material into mains-frequency cored induction furnace, galvanizing the furnace and heating, melting channel open and stirring drastically to melt the nonferrous metal into molten metal, taking out slowly the molten metal with little container when it approaches to shutting down the furnace, keeping slight molten metal in the bottom of the furnace, inserting metallic rod rapidly from the two sides of melting channel when the molten metal has not been concretionary, and the inserting depth being below the level of the minimum of the middle hole of melting channel, the fusible point and density of metallic rod both high than those of the melting channel; starting the furnace after shutting down, extracting the metallic rod in the melting channel after melting channel is open, furnace starting normal smelting. The melting channel can heat and melt and normally work all the time, the produced impurity of nonferrous metal never overproof, technique simple, convenient to operate, and the cost of melting low.
Description
One, technical field
The present invention relates to the melting method of non-ferrous metals (containing its alloy) such as a kind of copper, aluminium or zinc, specifically relate to the method that a kind of application commercial frequency cored induction furnace carries out melting to non-ferrous metals (containing its alloy) such as copper, aluminium or zinc.
Two, background technology
It is existing melting method commonly used that the application commercial frequency cored induction furnace carries out melting to non-ferrous metals (containing its alloy) such as copper, aluminium or zinc, is used widely.This commercial frequency cored induction furnace mainly is made of parts such as furnace shell, furnace lining, channel, iron core, ruhmkorff coils, and wherein channel is a metal ring (solid) of using the pouring metal melt identical with the non-ferrous metal (containing its alloy) of institute's melting to form; Be placed with iron core in channel intermediary hole, iron core is equipped with ruhmkorff coil outward.Its principle of work is: after the main frequency furnace energising, electric current enters ruhmkorff coil, because electromagnetic induction makes channel inside produce very big electric current, and makes channel heating fusing.Produce electromagnetic pressure simultaneously and make that the lapies molten metal that has melted is fierce to be stirred, thereby make the heat energy in the channel pass to whole stove rapidly, finally make non-ferrous metal (containing its alloy) fusing in the stove, so that carry out further processing treatment.
But the problem that this melting method exists has: disconnected ditch phenomenon, after induction furnace quits work, very easily take place in one when playing stove again again.This is because when blowing out, along with the molten metal in the stove is constantly drawn, air also is easy to be sucked by the channel molten metal and make channel contain air, just can occur the disconnected ditch phenomenon of channel when playing the stove heating more again.Have the stylish induction furnace built to use new channel (being the channel model) that disconnected ditch also can take place, this is owing to have when making the channel model due to air is inhaled into.Its two, easy blockage phenomenon.This be since the material purity of channel model not enough due to.Just impurity is more inadequately for purity, and the channel model is when the heating fusing, and these impurity are concentrated in and occur latch up phenomenon together.These disconnected ditches, latch up phenomenon, the capital does not plan a successor the channel (or channel model) in the fusing and can not making current, thereby make the channel fusing of can not generating heat, cause whole induction furnace to be scrapped, stove be must tear open and former lapies (stove cooling generally need 2 to 3 days) and the new channel of brickwork use again taken out, cause the waste on temporal loss and the fund, increased the melting cost.
China's utility application specification sheets CN 2122366U (day for announcing: on November 18th, 1992, application number: 92201754.9) disclose a kind of channel induction furnace with shell type channel, its technical scheme that adopts is mainly: channel is the shell type lapies, constitute by the composition metal ring, comprise metal ring and metal-coating, metal-coating is coating metal ring; The fusing point of metal-coating, resistivity all are higher than fusing point, the resistivity of metal ring.Its objective is for problems such as the disconnected ditch that solves lapies, obstructions, but this shell type lapies manufacturing cost height, complex process, the more important thing is that the shell type lapies is in the life-time service process, molten metal after the metal ring fusing can be in the ceaselessly fierce for a long time stirring of the internal layer of metal-coating, can little by little fuse into metal-coating in the molten metal, the impurity of the nonferrous materials of output is exceeded standard, do not reach user's requirement.
Three, summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, and its channel fusing of generating heat all the time when work of a kind of used commercial frequency cored induction furnace is provided, and can make the melting method of the non-ferrous metal that the impurity of the nonferrous materials of output can not exceed standard.
Purpose of the present invention realizes by following technical solution: a kind of melting method of non-ferrous metal, at first in commercial frequency cored induction furnace, add nonferrous materials, then the logical stream that powers on of this stove is heated, then channel is slowly changed logical and fierce the stirring, makes the nonferrous materials in the stove slowly be molten into molten metal; During near blowing out, with small vessels the molten metal in the stove is slowly pulled out, and should keep a spot of molten metal in the bottom of stove, when molten metal also solidifies, metal bar is not inserted from the both sides of channel fast, and the degree of depth that metal bar inserts is that the fusing point of employed metal bar, density all are higher than fusing point, the density of channel below the plane at lower-most point place of channel interstitial hole; Play stove after the blowing out once more, treat that the metal bar that channelization will be inserted in the channel after logical extracts, stove works better and nonferrous materials is carried out melting.
After adopting the present invention, when channel is being changed when disconnected ditch or latch up phenomenon occurring in the logical process, because the both sides of channel are inserted with metal bar, this metal bar still can make the channel making current of disconnected ditch or obstruction and the fusing transferring heat energy of generating heat; And pull out when inserting during owing to metal bar, do not worry that metal bar can slowly fuse in molten metal.Therefore, the present invention compared with prior art, the used channel fusing works better of generating heat all the time, the impurity of the nonferrous materials of output can not exceed standard, metal bar can repeated multiple times use, and has the advantage that technology is simple, easy to operate, the melting cost is low.
Four, description of drawings
The present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the channel that is inserted with metal bar (during blowing out) synoptic diagram in the melting method of non-ferrous metal of the present invention.
Five, embodiment
The melting method of non-ferrous metal of the present invention is: at first add nonferrous materials in commercial frequency cored induction furnace, then the logical stream that powers on of this stove is heated, then channel is slowly changed logical and fierce the stirring, makes the nonferrous materials in the stove slowly be molten into molten metal; During near blowing out, with small vessels (available monkey) molten metal in the stove is slowly pulled out, and should keep a spot of molten metal (solidifying the top of back) in the bottom of stove as channel, when molten metal also solidifies, metal bar (electrical conductor) is not inserted from the both sides of channel (for liquid) fast, and the degree of depth that metal bar inserts is below the plane at lower-most point place of channel interstitial hole, the fusing point of employed metal bar (can not melted simultaneously), density (can not float after the insertion) all is higher than the fusing point of channel, density (generally speaking, the resistivity of metal bar is higher than the resistivity of channel, but its conductivity will be got well); Play stove after the blowing out once more, treat that the metal bar that channelization will be inserted in the channel after logical extracts, stove works better and nonferrous materials is carried out melting.During once more near blowing out,, when molten metal also solidifies, metal bar is not inserted from the both sides of channel (for liquid) once more fast by above-mentioned technology, and then blowing out.Use metal bar so repeatedly, pull out when the time inserts, reach the purpose of " its channel fusing of generating heat all the time during commercial frequency cored induction furnace work, and the impurity of the nonferrous materials of output can not exceeded standard ", commercial frequency cored induction furnace also can repeated multiple times be used, thereby reduce the melting cost.
Shown in the accompanying drawing 1 be blowing out the time be inserted with the channel (solid) of metal bar, comprise channel 1, metal bar 2 (being generally 10 to 12 millimeters of diameters).Generally to carry out certain bending (its sinuousness decides according to the size of channel), so that the degree of depth that metal bar inserts is below the plane (baseplane shown in arrow C among the figure) at the lower-most point place of channel interstitial hole to an end of the metal bar that inserts.During the channel fusing, at first fusing bottom, slowly up fusing then, in the melting process, the air or the impurity that are present in the channel can build up together, make not plan a successor between the molten metal melted and the unfused channel, thereby disconnected ditch or latch up phenomenon take place channel.And the metal bar that inserts has played ligation to the tomography of channel just, makes channel still can continue heating fusing transferring heat energy.The tomography position of channel is the easiest concentrate in the drawings the position, two places shown in arrow A, the B (with the horizontal axis angle of channel be 45 degree places) up and down.
When described nonferrous materials was the anaerobic yellow gold, then channel was made of copper, and described metal bar is molybdenum bar or tungsten bar.Because the fusing point of copper, density, resistivity are respectively 1084 ℃, 8.96g/cm
3, 1.72; The fusing point of molybdenum, density, resistivity are respectively 2617 ℃, 10.22g/cm
3, 5.6; The fusing point of tungsten, density, resistivity are respectively 3407 ℃, 19.35g/cm
3, 5.5.This technical scheme best results.
Claims (3)
1, a kind of melting method of non-ferrous metal, comprise: at first in commercial frequency cored induction furnace, add nonferrous materials, then the logical stream that powers on of this stove is heated, then channel is slowly changed logical and fierce the stirring, makes the nonferrous materials in the stove slowly be molten into molten metal; During near blowing out, with small vessels the molten metal in the stove is slowly pulled out, and should keep a spot of molten metal in the bottom of stove, it is characterized in that: when molten metal also solidifies, metal bar is not inserted from the both sides of channel fast, and the degree of depth that metal bar inserts is that the fusing point of employed metal bar, density all are higher than fusing point, the density of channel below the plane at lower-most point place of channel interstitial hole; Play stove after the blowing out once more, treat that the metal bar that channelization will be inserted in the channel after logical extracts, stove works better and nonferrous materials is carried out melting.
2, the melting method of non-ferrous metal as claimed in claim 1 is characterized in that: described nonferrous materials is the anaerobic yellow gold, and described metal bar is a molybdenum bar.
3, the melting method of non-ferrous metal as claimed in claim 1 is characterized in that: described nonferrous materials is the anaerobic yellow gold, and described metal bar is a tungsten bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510075714 CN1702181A (en) | 2005-06-03 | 2005-06-03 | Smelting method for non-ferrous metal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510075714 CN1702181A (en) | 2005-06-03 | 2005-06-03 | Smelting method for non-ferrous metal |
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| CN1702181A true CN1702181A (en) | 2005-11-30 |
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| CN 200510075714 Pending CN1702181A (en) | 2005-06-03 | 2005-06-03 | Smelting method for non-ferrous metal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197712A (en) * | 2014-09-22 | 2014-12-10 | 宁德东升宏宇科技有限公司 | Mains-frequency induction furnace |
| CN112611221A (en) * | 2020-12-28 | 2021-04-06 | 无锡超洲科技有限公司 | Emergency first-aid method for breakage of melting channel of up-drawing copper melting furnace |
-
2005
- 2005-06-03 CN CN 200510075714 patent/CN1702181A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197712A (en) * | 2014-09-22 | 2014-12-10 | 宁德东升宏宇科技有限公司 | Mains-frequency induction furnace |
| CN112611221A (en) * | 2020-12-28 | 2021-04-06 | 无锡超洲科技有限公司 | Emergency first-aid method for breakage of melting channel of up-drawing copper melting furnace |
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