CN104250695A - Iron removal refining agent for preparation of free-cutting brass through melting of scrap brass - Google Patents
Iron removal refining agent for preparation of free-cutting brass through melting of scrap brass Download PDFInfo
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- CN104250695A CN104250695A CN201410319817.5A CN201410319817A CN104250695A CN 104250695 A CN104250695 A CN 104250695A CN 201410319817 A CN201410319817 A CN 201410319817A CN 104250695 A CN104250695 A CN 104250695A
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- alloyed powder
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Abstract
The invention discloses an iron removal refining agent for preparation of free-cutting brass through melting of scrap brass. The iron removal refining agent is prepared by mixing the following components by weight: 20-40% of a CuZr intermediate alloy powder, 5-15% of a CuTi intermediate alloy powder, 15-25% of a CuP intermediate alloy powder, 5-15% of sodium carbonate, and 20-35% of potassium sulfate. The invention can effectively reduce the impurity element Fe in scrap brass, inhibit the influences of Fe element on the plasticity and cutting properties of the free-cutting brass product, and remove oxide slag laden in the melt and improve the quality of the free-cutting brass product.
Description
Technical field
The present invention relates to technical field of nonferrous metal processing, particularly free-cutting brass deironing refining agent is prepared in one ash metal melting of giving up.
Background technology
China is the maximum copper country of consumption in the whole world, is also maximum Jing Tong producing country simultaneously, and along with the continuous expansion of domestic smart copper output and consumption, copper raw material supply has become the bottleneck factor of restriction China Copper industrial development.Because the regenerability of copper is good, for primary copper, copper scap has energy-saving and environmental protection, economic dispatch advantage as copper raw material, and therefore copper scap becomes an important source material source of Copper Processing Industry.The give up direct utilization of ash metal of China is: adopt large-tonnage electrosmelting-liquid turn of tidal stream-multithread multi-piece horizontally continuous casting lead and yellow-collation copper rod technology of diving.Except beneficial element that Zn, Pb element is free-cutting brass goods in useless ash metal, also there is the harmful elements such as Fe, Sn, Al, Si, Bi in a large number, especially Fe, Sn element is simultaneously a large amount of exists, in the undemanding situation of melting, these harmful elements also can be present in cast brass in a large number again, the over-all properties of impact regeneration brass ware.
Useless ash metal removal of impurities still belongs to an industry difficult problem in copper alloy founding field, and the school and the mechanism that carry out area research are many, but the achievement obtained is few.The process adopting copper scap melting directly to prepare free-cutting brass adopts solvent reduction and removes impurity element aspect document less.Article " the refining slagging-off of Mock platina melting " (" metallurgical collection " 2004, Vol.149, No.1, P 19-21) mention that a kind of factory brass processes scrap stock, old material melts down Borax Type deslagging agent used: borax: 42%, coke powder: 50%, sodium carbonate: 8%, effectively reduces metallic element loss, have good coverage effect, but this deslagging refining agent effectively can not remove the harmful elements such as Fe, Sn in useless ash metal.Patent CN101514398A " a kind of high rare-earth content master alloy refining agent of refining copper scap and Synthesis and applications thereof " discloses a kind of containing Cu – RE refining agent, there is certain effect that removes to impurity elements such as low melting point element sulphur, phosphorus, tin, bismuth, lead, but be mainly applicable to refining and the Metamorphism treatment of recycled copper and assorted copper-nickel alloy.Patent CN102605193A discloses a kind of Copper and its alloy refining agent for smelting, is mainly used in the degasification of recycled copper, fine copper and alloy thereof, insulation, refining and covering effect.But above-mentioned refining agent is not for useless ash metal, the refining effect for useless ash metal is not obvious.
Summary of the invention
A kind of useless ash metal melting is the object of the present invention is to provide to prepare free-cutting brass deironing refining agent, effectively can reduce the Impurity Fe in useless ash metal, suppress Fe element on the impact of the performances such as free-cutting brass goods plasticity, machinability, and the oxide inclusions removed in melt, promote the quality of free-cutting brass goods.
The technical solution adopted for the present invention to solve the technical problems is:
Free-cutting brass deironing refining agent is prepared in a kind of useless ash metal melting, described deironing refining agent is mixed by the component of following mass percent: CuZr master alloyed powder 20 ~ 40%, CuTi master alloyed powder 5 ~ 15%, CuP master alloyed powder 15 ~ 25%, sodium carbonate 5 ~ 15%, potassium sulfate 20 ~ 35%.
As preferably, described deironing refining agent is mixed by the component of following mass percent: CuZr master alloyed powder 25 ~ 35%, CuTi master alloyed powder 10 ~ 15%, CuP master alloyed powder 15 ~ 20%, sodium carbonate 5 ~ 15%, potassium sulfate 25 ~ 35%.
The principles of chemistry of refining agent of the present invention:
Zr, Ti density metal is little compared with Cu, and at high temperature can form compound with Fe, as FeZr
3, FeZr
2, Fe
3zr, Fe
2zr, TiFe and TiFe
2deng.These compound density are little compared with copper, and when copper alloy melt quiescence in high temperature, part can float.Add potassium sulfate and sodium carbonate, effectively can dissolve ferro element compound and the oxide compound of floating, also have other oxide impurity and dissolve adsorption preferably.Adding of P element, consuming except Fe element except forming compound with Fe element reaction, effectively can also improve the mobility of melt, being easy to the floating of compound in melt.
The preparation principle of refining agent of the present invention:
In refining agent of the present invention, Zr, Ti and P all adopt the form of master alloyed powder and potassium sulfate, sodium carbonate used in combination.In Zr and Cu master alloy, the content of Zr element is good 20 ~ 70%; In Ti and Cu master alloy, the content of Ti element is good 20 ~ 70%; In P and Cu master alloy, the content of P element is good 10 ~ 20%.The master alloy of these scopes formed because of Zr, Ti and P and Cu is extremely crisp, easily pulverizes.In the present invention, the granularity of master alloyed powder is good with 20 order ~ 100 orders, can rapid melting onset.
As preferably, in described CuZr master alloyed powder, the mass percentage content of Zr is 20-70%, and surplus is Cu.
As preferably, in described CuTi master alloyed powder, the mass percentage content of Ti is 20-70%, and surplus is Cu.
As preferably, in described CuP master alloyed powder, the mass percentage content of P is 10-20%, and surplus is Cu.
As preferably, the fineness of described CuZr master alloyed powder, CuTi master alloyed powder and CuP master alloyed powder is 20 order ~ 100 orders.
The preparation method of free-cutting brass deironing refining agent is prepared in a kind of useless ash metal melting, CuZr master alloyed powder, CuTi master alloyed powder, CuP master alloyed powder, sodium carbonate and potassium sulfate are mixed, be heated to 200 DEG C-350 DEG C insulations, 2 hours-3 hours (so abundant removal deironing refining agent internal moisture), finally become block by Copper Foil or copper pipe enrobed compacted.
The invention has the beneficial effects as follows:
1, deironing refining agent of the present invention adopts Zr, Ti and P to become master alloy with copper founding, and is ground into powder, and fusing point is lower than the smelting temperature of brass, and refining agent can rapid melting, and reacts with the Fe element in melt, formation compound.
2, deironing refining agent of the present invention, adopt Copper Foil or copper pipe coated, briquetting, eliminates gas in refining agent, store, easy to use, and be easy to add.
3, in deironing refining agent of the present invention, Ti, Zr element is effective alterant of brass melting, adding of Ti, Zr element, can refinement ingot casting crystal grain, improves ingot quality, improves the mechanical property of brass ware, processing characteristics and use properties.
Embodiment
Below by specific embodiment, technical scheme of the present invention is described in further detail.
In the present invention, if not refer in particular to, the raw material adopted and equipment etc. all can be buied from market or this area is conventional.Method in following embodiment, if no special instructions, is the ordinary method of this area.
Embodiment 1:
Free-cutting brass deironing refining agent is prepared in a kind of useless ash metal melting, described deironing refining agent is mixed by the component of following mass percent: CuZr master alloyed powder (mass percentage content of Zr is 70%) 20%, CuTi master alloyed powder (mass percentage content of Ti is 20%) 15%, CuP master alloyed powder (mass percentage content of P is 10%) 25%, sodium carbonate 5%, potassium sulfate 35%.
According to said ratio, CuZr master alloyed powder (fineness 20 order ~ 100 order), CuTi master alloyed powder (fineness 20 order ~ 100 order), CuP master alloyed powder (fineness 20 order ~ 100 order), sodium carbonate and potassium sulfate are mixed, put into electric furnace and be heated to 200 DEG C of insulations 3 hours, finally use copper foil-clad briquetting.
Embodiment 2:
Free-cutting brass deironing refining agent is prepared in a kind of useless ash metal melting, described deironing refining agent is mixed by the component of following mass percent: CuZr master alloyed powder (mass percentage content of Zr is 20%) 40%, CuTi master alloyed powder (mass percentage content of Ti is 70%) 5%, CuP master alloyed powder (mass percentage content of P is 20%) 15%, sodium carbonate 15%, potassium sulfate 25%.
According to said ratio, CuZr master alloyed powder (fineness 20 order ~ 100 order), CuTi master alloyed powder (fineness 20 order ~ 100 order), CuP master alloyed powder (fineness 20 order ~ 100 order), sodium carbonate and potassium sulfate are mixed, put into electric furnace and be heated to 350 DEG C of insulations 2 hours, finally become block by copper pipe enrobed compacted.
Embodiment 3:
Free-cutting brass deironing refining agent is prepared in a kind of useless ash metal melting, described deironing refining agent is mixed by the component of following mass percent: CuZr master alloyed powder (mass percentage content of Zr is 30%) 40%, CuTi master alloyed powder (mass percentage content of Ti is 50%) 10%, CuP master alloyed powder (mass percentage content of P is 15%) 20%, sodium carbonate 10%, potassium sulfate 20%.
According to said ratio, CuZr master alloyed powder (fineness 20 order ~ 100 order), CuTi master alloyed powder (fineness 20 order ~ 100 order), CuP master alloyed powder (fineness 20 order ~ 100 order), sodium carbonate and potassium sulfate are mixed, put into electric furnace and be heated to 300 DEG C of insulations 2.5 hours, finally become block by Copper Foil or copper pipe enrobed compacted.
Embodiment 4:
Free-cutting brass deironing refining agent is prepared in a kind of useless ash metal melting, described deironing refining agent is mixed by the component of following mass percent: CuZr master alloyed powder (mass percentage content of Zr is 40%) 30%, CuTi master alloyed powder (mass percentage content of Ti is 40%) 10%, CuP master alloyed powder (mass percentage content of P is 15%) 20%, sodium carbonate 10%, potassium sulfate 30%.
According to said ratio, CuZr master alloyed powder (fineness 20 order ~ 100 order), CuTi master alloyed powder (fineness 20 order ~ 100 order), CuP master alloyed powder (fineness 20 order ~ 100 order), sodium carbonate and potassium sulfate are mixed, put into electric furnace and be heated to 250 DEG C of insulations 3 hours, finally use copper foil-clad briquetting.
Deironing refining agent using method of the present invention:
The ash metal that given up by 200kg loads in electric furnace, and blow-on heats up and is heated to 1100-1200 DEG C, after useless ash metal melts completely, stir, leave standstill 5-15min, make the slag of melt inside float up to surface, remove, afterwards, by 0.5% of 1kg(melt weight) deironing refining agent press-in brass melt inside of the present invention, make it fully dissolve, and stir, leave standstill 10 ~ 25 minutes again, then cool the temperature to about 1000 DEG C, by floating, the slag being gathered in melt upper surface removes.Composition detection and comparative analysis are carried out in the melt added before and after deironing refining agent of the present invention sampling, the results are shown in Table 1.
Effect comparison before and after table 1 deironing refining agent of the present invention uses
Above-described embodiment is one of the present invention preferably scheme, not does any pro forma restriction to the present invention, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (7)
1. free-cutting brass deironing refining agent is prepared in a useless ash metal melting, it is characterized in that: described deironing refining agent is mixed by the component of following mass percent: CuZr master alloyed powder 20 ~ 40%, CuTi master alloyed powder 5 ~ 15%, CuP master alloyed powder 15 ~ 25%, sodium carbonate 5 ~ 15%, potassium sulfate 20 ~ 35%.
2. deironing refining agent according to claim 1, it is characterized in that: described deironing refining agent is mixed by the component of following mass percent: CuZr master alloyed powder 25 ~ 35%, CuTi master alloyed powder 10 ~ 15%, CuP master alloyed powder 15 ~ 20%, sodium carbonate 5 ~ 15%, potassium sulfate 25 ~ 35%.
3. deironing refining agent according to claim 1 and 2, is characterized in that: in described CuZr master alloyed powder, and the mass percentage content of Zr is 20-70%, and surplus is Cu.
4. deironing refining agent according to claim 1 and 2, is characterized in that: in described CuTi master alloyed powder, and the mass percentage content of Ti is 20-70%, and surplus is Cu.
5. deironing refining agent according to claim 1 and 2, is characterized in that: in described CuP master alloyed powder, and the mass percentage content of P is 10-20%, and surplus is Cu.
6. deironing refining agent according to claim 1 and 2, is characterized in that: the fineness of described CuZr master alloyed powder, CuTi master alloyed powder and CuP master alloyed powder is 20 order ~ 100 orders.
7. one kind as claimed in claim 1 useless ash metal melting prepare the preparation method of free-cutting brass deironing refining agent, it is characterized in that: CuZr master alloyed powder, CuTi master alloyed powder, CuP master alloyed powder, sodium carbonate and potassium sulfate are mixed, be heated to 200 DEG C-350 DEG C insulations 2 hours-3 hours, finally become block by Copper Foil or copper pipe enrobed compacted.
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|---|---|---|---|
| CN201410319817.5A CN104250695B (en) | 2014-07-08 | 2014-07-08 | Free-cutting brass deironing refining agent is prepared in a kind of useless ash metal melting |
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|---|---|---|---|
| CN201410319817.5A CN104250695B (en) | 2014-07-08 | 2014-07-08 | Free-cutting brass deironing refining agent is prepared in a kind of useless ash metal melting |
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| CN104250695B CN104250695B (en) | 2016-04-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636668A (en) * | 2016-09-28 | 2017-05-10 | 中南大学 | Waste electromagnetic wire copper refining agent and preparation method and application thereof |
| CN108796260A (en) * | 2018-06-25 | 2018-11-13 | 中色奥博特铜铝业有限公司 | A kind of cleaner and its application method for smelting copper alloy |
| CN109763005A (en) * | 2019-01-23 | 2019-05-17 | 北京科技大学 | A method of reducing complicated pluralism brass alloys impurity elements of ferrum |
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| JP2001271126A (en) * | 2000-03-28 | 2001-10-02 | Nippon Mining & Metals Co Ltd | Method for recovering metal component from slag of copper or copper alloy |
| CN101250636A (en) * | 2008-03-27 | 2008-08-27 | 武汉市江岸区立英科技开发研究所 | Nonferrous alloy smelting fusing agent and preparation method |
| CN101514398A (en) * | 2009-04-03 | 2009-08-26 | 中南大学 | High Cu-RE interalloy refining agent for refining scrap copper and preparation and application thereof |
| CN102168193A (en) * | 2011-03-28 | 2011-08-31 | 宁波大学 | Method for regenerating continuously-cast high quality brass alloy with waste miscellaneous brass |
| CN102605205A (en) * | 2012-03-22 | 2012-07-25 | 金川集团有限公司 | Brass alloy smelting method |
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2014
- 2014-07-08 CN CN201410319817.5A patent/CN104250695B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001271126A (en) * | 2000-03-28 | 2001-10-02 | Nippon Mining & Metals Co Ltd | Method for recovering metal component from slag of copper or copper alloy |
| CN101250636A (en) * | 2008-03-27 | 2008-08-27 | 武汉市江岸区立英科技开发研究所 | Nonferrous alloy smelting fusing agent and preparation method |
| CN101514398A (en) * | 2009-04-03 | 2009-08-26 | 中南大学 | High Cu-RE interalloy refining agent for refining scrap copper and preparation and application thereof |
| CN102168193A (en) * | 2011-03-28 | 2011-08-31 | 宁波大学 | Method for regenerating continuously-cast high quality brass alloy with waste miscellaneous brass |
| CN102605205A (en) * | 2012-03-22 | 2012-07-25 | 金川集团有限公司 | Brass alloy smelting method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636668A (en) * | 2016-09-28 | 2017-05-10 | 中南大学 | Waste electromagnetic wire copper refining agent and preparation method and application thereof |
| CN106636668B (en) * | 2016-09-28 | 2019-01-18 | 中南大学 | A kind of waste and old electromagnetic wire copper refining agent and its preparation method and application |
| CN108796260A (en) * | 2018-06-25 | 2018-11-13 | 中色奥博特铜铝业有限公司 | A kind of cleaner and its application method for smelting copper alloy |
| CN109763005A (en) * | 2019-01-23 | 2019-05-17 | 北京科技大学 | A method of reducing complicated pluralism brass alloys impurity elements of ferrum |
| CN109763005B (en) * | 2019-01-23 | 2020-12-01 | 北京科技大学 | Method for reducing impurity element iron of complex multi-element brass alloy |
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| CN104250695B (en) | 2016-04-27 |
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