CN103667737A - Primary pyro-refining method for lead bullions - Google Patents
Primary pyro-refining method for lead bullions Download PDFInfo
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- CN103667737A CN103667737A CN201310748602.0A CN201310748602A CN103667737A CN 103667737 A CN103667737 A CN 103667737A CN 201310748602 A CN201310748602 A CN 201310748602A CN 103667737 A CN103667737 A CN 103667737A
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Abstract
The invention discloses a primary pyro-refining method for lead bullions. The method is characterized by comprising the following steps of 1, filling a boiler with a plurality of lead bullions and anode scrap at one time in a matched way, and covering the boiler by using a dedusting hood; 2, performing heating fusion at temperature which is controlled to be about 360 DEG C, pressing slag, and lifting in a stirrer with a dedusting hood when a small amount of adhesive lead is adhered to a slag pressing roller; 3, manually and slowly adding a certain amount of prepared fusion agent (sawdust, sulfur, caustic soda flakes, sodium carbonate and sodium nitrate) into the boiler for stirring by using a shovel; 4, performing stirring for 1 to 2 hours, and when scum (sulfur waste) gets loose and noncaking, and forms brownish black powder or particles, determining that the reaction is finished, and stopping stirring; 5, fishing the scum, pouring the scum into an iron plate, performing sampling for assay, and performing treatment in a reverberating furnace for treatment; 6, after lead liquid is sampled and assayed, scooping the lead liquid to a casting pot. The method has the advantages that 1, the Cu content of a positive plate is low, and is ordinarily controlled to be 0.06 to 0.03 percent; 2, the scum contains Pb, the Pb content of the scum is ordinarily controlled to be lower than 65 percent, and the Cu content of the scum is ordinarily controlled to be 7 to 14 percent; 3, energy sources are saved, lead-containing dust and flue gas are reduced, the method is convenient to operate, and the labor intensity of a worker is reduced.
Description
Technical field
The present invention relates to a kind of non-ferrous metal metallurgy method, relate in particular to just step refining process of a kind of lead bullion pyrogenic process.
Background technology
The object of the preliminary refining of pyrogenic process is away most Cu, Sn, As in lead bullion, adjusts the content of Sb, meets the demand of electrolytic process, and casts qualified positive plate.
Ultimate principle is as follows: molten lead copper removal, the solubleness of copper in plumbous liquid, along with the reduction of temperature, reduce, in theory, when plumbous liquid temp is 326 ℃, copper content is 0.06%, and during the high plumbous liquid cooling of cupric, copper becomes solid solution state to separate out, because proportion is more plumbous little, float over plumbous liquid surface and be removed with the form of scum silica frost, while having arsenic antimony to exist in plumbous liquid, can generate copper arsenide and the antimony copper of indissoluble, be conducive to the removal of copper, in general plumbous liquid, contain arsenic, antimony sum is less than 8%, when plumbous liquid temp is down to 330～340 ℃, cupric can be down to 0.04%～0.08%.
Add sulphur copper removal, after adopt liquation decoppering, cupric does not still reach requirement, contains the copper of 0.1% left and right, should do further copper removal.
Oxidation arsenic removal, tin, because arsenic tin is greater than the plumbous avidity to oxygen to the avidity of oxygen, therefore, use plumbous oxide as oxygenant arsenic removal tin.
Adjust the content of antimony, for meeting plumbous electrolysis antianode containing the requirement of antimony, need arrange in pairs or groups to lead bullion, to meet production requirement.
The technique of traditional lead bullion pyrogenic process lead bullion is as follows.
The method is because power consumption is larger, and program is comparatively complicated, complex operation, and the positive plate content obtaining can not meet Production requirement sometimes.
Summary of the invention
The technical problem that will solve required for the present invention is to overcome the deficiency existing in the preliminary refining techniques of existing lead bullion pyrogenic process, proposes just step refining process of a kind of lead bullion pyrogenic process, meets the demand that present lead metallurgy industry is produced.
The present invention is achieved in that just step refining process of a kind of lead bullion pyrogenic process, comprises following step.
1, by several lead bullion and anode scrap collocation dress pot, once fill lid dust collection cover.
2, heat up and melt, temperature is controlled 360 ℃ of left and right, presses slag, pressure slag stone roller while having a small amount of sticky lead, to hang in the stirrer with dust collection cover.
3, will prepare flux (wood sawdust, sulphur, sheet alkali, sodium carbonate, SODIUMNITRATE) unrestrained add in pot and stirs with scoop by a certain amount of artificial delaying.
4, wait to stir 1～2 hour, wait scum silica frost (sulphur slag) to become loose, do not lump, powdery or granular while being brownish black, represents to react and reaches home, and stops stirring.
5, drag for slag and pour scum silica frost into iron plate sample examination, enter reverberatory furnace and process.
6, by after plumbous liquid sample examination, ladle out plumbous liquid to casting mold pot.
The smelting process of a kind of plumbous scum silica frost of the present invention, has following advantage.
1, positive plate is low containing copper grade: general control Cu:0.06%～0.03%.
2, scum silica frost contains Pb grade, below general control Pb:65%, and Cu:7～14%.
3, save energy, reduces leaded dust and flue gas, easy and simple to handle, reduces staff labor intensity.
Accompanying drawing explanation
Fig. 1 is just step refining process process flow diagram of a kind of lead bullion pyrogenic process.
Embodiment
Below in conjunction with embodiment, explain in detail technical scheme provided by the present invention, but not as the restriction to the claims in the present invention protection domain.
Specific embodiment.
Embodiment 1: several lead bullion are mixed to rear dress pot according to a certain percentage, then be warming up to 350 ~ 370 ℃, press slag, while pressing slag stone roller to have a small amount of sticky lead, hang in the stirrer with dust collection cover, to prepare flux (wood sawdust, sulphur, sheet alkali, sodium carbonate, SODIUMNITRATE) by a certain amount of artificial delaying, unrestrained with scoop, add in pot and stir, wait to stir 1～2 hour, Deng scum silica frost (sulphur slag), become loose, do not lump, powdery or granular while being brownish black, represent to react and reach home, stop stirring, drag for slag and pour scum silica frost into iron plate sample examination, entering reverberatory furnace processes, by after plumbous liquid sample examination, ladle out plumbous liquid to casting mold pot, the plumbous scum silica frost data of output are: Pb:59.62%, Bi:1.01%, Cu:9.02%, Sb:2.69%, Ag:2914g/t, Au:4g/t, output positive plate grade: Pb:96.58%, Bi:0.82%, Cu:0.02%, Sb:1.56%, Ag:3512 g/t, Au:4g/t, As:0.65%.
Embodiment 2: several lead bullion are mixed to rear dress pot according to a certain percentage, then be warming up to 350 ~ 370 ℃, press slag, while pressing slag stone roller to have a small amount of sticky lead, hang in the stirrer with dust collection cover, to prepare flux (wood sawdust, sulphur, sheet alkali, sodium carbonate, SODIUMNITRATE) by a certain amount of artificial delaying, unrestrained with scoop, add in pot and stir, wait to stir 1～2 hour, Deng scum silica frost (sulphur slag), become loose, do not lump, powdery or granular while being brownish black, represent to react and reach home, stop stirring, drag for slag and pour scum silica frost into iron plate sample examination, entering reverberatory furnace processes, by after plumbous liquid sample examination, ladle out plumbous liquid to casting mold pot, the plumbous scum silica frost data of output are: Pb:60.04%, Bi:1.03%, Cu:9.13%, Sb:2.65%, Ag:2924g/t, Au:2g/t, output positive plate grade: Pb:96.65%, Bi:0.85%, Cu:0.03%, Sb:1.48%, Ag:3610 g/t, Au:4g/t, As:0.61%.
Embodiment 3: several lead bullion are mixed to rear dress pot according to a certain percentage, then be warming up to 350 ~ 370 ℃, press slag, while pressing slag stone roller to have a small amount of sticky lead, hang in the stirrer with dust collection cover, to prepare flux (wood sawdust, sulphur, sheet alkali, sodium carbonate, SODIUMNITRATE) by a certain amount of artificial delaying, unrestrained with scoop, add in pot and stir, wait to stir 1～2 hour, Deng scum silica frost (sulphur slag), become loose, do not lump, powdery or granular while being brownish black, represent to react and reach home, stop stirring, drag for slag and pour scum silica frost into iron plate sample examination, entering reverberatory furnace processes, by after plumbous liquid sample examination, ladle out plumbous liquid to casting mold pot, the plumbous scum silica frost data of output are: Pb:55.12%, Bi:0.55%, Cu:9.1%, Sb:1.82%, Ag:2600g/t, Au:6g/t, output positive plate grade: Pb:97.65%, Bi:0.95%, Cu:0.04%, Sb:0.79%, Ag:4644 g/t, Au:4g/t, As:0.1%.
Embodiment 4: several lead bullion are mixed to rear dress pot according to a certain percentage, then be warming up to 350 ~ 370 ℃, press slag, while pressing slag stone roller to have a small amount of sticky lead, hang in the stirrer with dust collection cover, to prepare flux (wood sawdust, sulphur, sheet alkali, sodium carbonate, SODIUMNITRATE) by a certain amount of artificial delaying, unrestrained with scoop, add in pot and stir, wait to stir 1～2 hour, Deng scum silica frost (sulphur slag), become loose, do not lump, powdery or granular while being brownish black, represent to react and reach home, stop stirring, drag for slag and pour scum silica frost into iron plate sample examination, entering reverberatory furnace processes, by after plumbous liquid sample examination, ladle out plumbous liquid to casting mold pot, the plumbous scum silica frost data of output are: Pb:56.75%, Bi:1%, Cu:8.6%, Sb:1.21%, Ag:2830g/t, Au:2g/t, output positive plate grade: Pb:96.79%, Bi:0.96%, Cu:0.02%, Sb:1.34%, Ag:2653 g/t, Au:3g/t, As:0.61%.
Embodiment 5: several lead bullion are mixed to rear dress pot according to a certain percentage, then be warming up to 350 ~ 370 ℃, press slag, while pressing slag stone roller to have a small amount of sticky lead, hang in the stirrer with dust collection cover, to prepare flux (wood sawdust, sulphur, sheet alkali, sodium carbonate, SODIUMNITRATE) by a certain amount of artificial delaying, unrestrained with scoop, add in pot and stir, wait to stir 1～2 hour, Deng scum silica frost (sulphur slag), become loose, do not lump, powdery or granular while being brownish black, represent to react and reach home, stop stirring, drag for slag and pour scum silica frost into iron plate sample examination, entering reverberatory furnace processes, by after plumbous liquid sample examination, ladle out plumbous liquid to casting mold pot, the plumbous scum silica frost data of output are: Pb:64.64%, Bi:0.5%, Cu:12.99%, Sb:1.65%, Ag:2204g/t, Au:4g/t, output positive plate grade: Pb:97.26%, Bi:0.95%, Cu:0.04%, Sb:1.15%, Ag:3174 g/t, Au:3g/t, As:0.27%.
Claims (1)
1. the first step refining process of lead bullion pyrogenic process, is characterized in that comprising following step: 1,, by several lead bullion and anode scrap collocation dress pot, once fill lid dust collection cover; 2, heat up and melt, temperature is controlled 360 ℃ of left and right, presses slag, pressure slag stone roller while having a small amount of sticky lead, to hang in the stirrer with dust collection cover; 3, will prepare flux (wood sawdust, sulphur, sheet alkali, sodium carbonate, SODIUMNITRATE) unrestrained add in pot and stirs with scoop by a certain amount of artificial delaying; 4, wait to stir 1～2 hour, wait scum silica frost (sulphur slag) to become loose, do not lump, powdery or granular while being brownish black, represents to react and reaches home, and stops stirring; 5, drag for slag and pour scum silica frost into iron plate sample examination, enter reverberatory furnace and process; 6, by after plumbous liquid sample examination, ladle out plumbous liquid to casting mold pot.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219890A (en) * | 2014-09-04 | 2014-12-17 | 金悦通电子（翁源）有限公司 | Decoppering and desulphurizing method for PCB (printed circuit board) lead-free hot air solder leveling process |
| CN104357682A (en) * | 2014-12-09 | 2015-02-18 | 山东恒邦冶炼股份有限公司 | Method for efficiently removing copper through crude bismuth pot refining |
| CN104674018A (en) * | 2014-12-22 | 2015-06-03 | 芜湖市民泰铜业有限责任公司 | Method for chemical copper removal of wet lead |
| CN105603224A (en) * | 2015-12-25 | 2016-05-25 | 河南豫光金铅股份有限公司 | Smelting method for preparing lead-antimony alloy from lead-containing waste |
| CN105886794A (en) * | 2016-04-20 | 2016-08-24 | 郴州市金贵银业股份有限公司 | Processing method for high-copper lead bullion |
| CN107663592A (en) * | 2016-07-27 | 2018-02-06 | 江西金洋金属有限公司 | A kind of method that lead liquid is purified using deslagging agent |
| CN110184475A (en) * | 2019-07-05 | 2019-08-30 | 云南驰宏资源综合利用有限公司 | A kind of method of high arsenic refining of lead bullion slag making enrichment arsenic |
| CN112695206A (en) * | 2020-12-10 | 2021-04-23 | 北京高能时代环境技术股份有限公司 | Fire refining decoppering agent for lead bullion, preparation method and application |
| CN112981132A (en) * | 2019-12-15 | 2021-06-18 | 湖南省桂阳银星有色冶炼有限公司 | Lead bullion electrolytic refining method beneficial to cadmium removal |
| CN113913623A (en) * | 2021-09-09 | 2022-01-11 | 河南豫光金铅股份有限公司 | Method for dearsenifying and antimony retaining of crude lead by primary fire refining |
| CN116411175A (en) * | 2023-06-12 | 2023-07-11 | 昆明理工大学 | Fire refining method for complex lead bullion |
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| CN102011015A (en) * | 2010-12-21 | 2011-04-13 | 株洲冶炼集团股份有限公司 | Method for removing arsenic, antimony and copper by refining raw lead |
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| CN101705372A (en) * | 2009-11-25 | 2010-05-12 | 郴州市金贵银业股份有限公司 | Process for extracting tin from wet lead with high tin content |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219890A (en) * | 2014-09-04 | 2014-12-17 | 金悦通电子（翁源）有限公司 | Decoppering and desulphurizing method for PCB (printed circuit board) lead-free hot air solder leveling process |
| CN104219890B (en) * | 2014-09-04 | 2017-11-07 | 金悦通电子（翁源）有限公司 | A kind of copper removal process for sulfur removal of PCB lead-free tin spray process |
| CN104357682A (en) * | 2014-12-09 | 2015-02-18 | 山东恒邦冶炼股份有限公司 | Method for efficiently removing copper through crude bismuth pot refining |
| CN104674018A (en) * | 2014-12-22 | 2015-06-03 | 芜湖市民泰铜业有限责任公司 | Method for chemical copper removal of wet lead |
| CN105603224A (en) * | 2015-12-25 | 2016-05-25 | 河南豫光金铅股份有限公司 | Smelting method for preparing lead-antimony alloy from lead-containing waste |
| CN105886794A (en) * | 2016-04-20 | 2016-08-24 | 郴州市金贵银业股份有限公司 | Processing method for high-copper lead bullion |
| CN107663592A (en) * | 2016-07-27 | 2018-02-06 | 江西金洋金属有限公司 | A kind of method that lead liquid is purified using deslagging agent |
| CN110184475A (en) * | 2019-07-05 | 2019-08-30 | 云南驰宏资源综合利用有限公司 | A kind of method of high arsenic refining of lead bullion slag making enrichment arsenic |
| CN112981132A (en) * | 2019-12-15 | 2021-06-18 | 湖南省桂阳银星有色冶炼有限公司 | Lead bullion electrolytic refining method beneficial to cadmium removal |
| CN112695206A (en) * | 2020-12-10 | 2021-04-23 | 北京高能时代环境技术股份有限公司 | Fire refining decoppering agent for lead bullion, preparation method and application |
| CN113913623A (en) * | 2021-09-09 | 2022-01-11 | 河南豫光金铅股份有限公司 | Method for dearsenifying and antimony retaining of crude lead by primary fire refining |
| CN116411175A (en) * | 2023-06-12 | 2023-07-11 | 昆明理工大学 | Fire refining method for complex lead bullion |
| CN116411175B (en) * | 2023-06-12 | 2023-08-25 | 昆明理工大学 | Fire refining method for complex lead bullion |
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Application publication date: 20140326 |