CN1027821C - 一种低银含量锡阳极泥提取银的方法 - Google Patents
一种低银含量锡阳极泥提取银的方法 Download PDFInfo
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- CN1027821C CN1027821C CN90106787A CN90106787A CN1027821C CN 1027821 C CN1027821 C CN 1027821C CN 90106787 A CN90106787 A CN 90106787A CN 90106787 A CN90106787 A CN 90106787A CN 1027821 C CN1027821 C CN 1027821C
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- Prior art keywords
- silver
- anode mud
- low
- temperature
- tin anode
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- 229910052709 silver Inorganic materials 0.000 title claims abstract description 35
- 239000004332 silver Substances 0.000 title claims abstract description 35
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 14
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 239000012452 mother liquor Substances 0.000 claims description 3
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 claims description 2
- 239000005750 Copper hydroxide Substances 0.000 claims description 2
- 239000003637 basic solution Substances 0.000 claims description 2
- 229910001956 copper hydroxide Inorganic materials 0.000 claims description 2
- 239000010946 fine silver Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000002386 leaching Methods 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000010970 precious metal Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- 239000001117 sulphuric acid Substances 0.000 description 2
- 101100493820 Caenorhabditis elegans best-1 gene Proteins 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004094 preconcentration Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
一种低银含量锡阳极泥提取银的方法。主要含铅和锡,银含量低的锡阳极泥,经过氧化焙烧,二级稀硫酸浸出,浸出液铜片置换,即可优先提取银。银纯度~99.9%,直收率~92%。
Description
一种低银含量锡阳极泥提取银的方法,本发明是关于贵金属冶金。
锡电解阳极泥是提取贵金属的原料之一。组分为:Pb32~37%,Sn22~32%,Cu3~4%,S4.8~5.9%,Ag0.34~0.38%的低银含量锡阳极泥,铅、锡含量高,基本上不含金,银含量很低。从这样的物料中回收银比较困难。有关锡阳极泥处理的少数报导,都必须经过进一步富集,然后再附带回收贵金属。从银含量低的锡阳极泥中优先回收银的方法未见报导。
本发明所提供的方法,(1)是将所说的低银含量锡阳极泥在温度600~800℃,最好680~740℃进行氧化性焙烧,氧化剂为空气,焙烧时间1~6小时,使银和铜转变为可溶状态,焙烧过程翻动几次,效果更好。(2)所得焙烧渣磨细后,在硫酸浓度1~10%,最好1~1.5%,温度70~94℃,最好85~94℃,液体(体积,ml)∶固体(重量,g)=4~9∶1,最好8∶1,进行二级选择性浸出,第一级~2.5小时,第二级~1.5小时,银和铜转入浸出液,铅和锡留在渣中不分散(铅为PbSO4,锡为SnO2)。(3)稀硫酸浸出液在温度30~80℃,最好40~45℃,用铜片静态置换银,时间24小时,得到纯银粉,过滤烘干,纯度99.8~99.9%,直收率90~92.5%。(4)将C所得置换母液加碱性溶液中和沉淀,得到氢氧化铜,回收铜。
本发明的优点是:(1)流程简单,工艺过程周期短。(2)不需要经过预先富集,可以优先提取银。(3)不使用特殊设备和试剂,处理费用低,易于应用于工业实践。(4)铅、锡不分散,99%集中在浸出渣中,铜可在置换母液中回收,有利于有价组分综合回收。(5)操作条件较好,不会对环境造成污染。
实施例:
成分为(%):Ag0.375,Pb34.5,Sn31.4,Cu4的低银含量锡阳极泥54Kg(实际银含量为202.58g),分批装于不锈钢盘中,在700℃焙烧5小时,1小时翻动一次;渣冷却后磨细,以1%工业硫酸,液体(体积,ml)∶固体(重量,g)=8∶1,温度~90℃,进行二级浸出,一级2.5小时,二级1.5小时,银和铜转入浸出液;浸出液在40~45℃,用铜片静态置换24小时,残液含Ag0.0004g/l,银粉经洗涤、烘干后称重,实得海绵银187.02g,银纯度99.9%,直收率92.32%。
Claims (4)
1、一种低银含量锡阳极泥提取银的方法,其特征在于:
A.将低银含量锡阳极泥在温度600~800℃,进行氧化性焙烧,氧化剂为空气,焙烧时间1~6小时,使银和铜转变为可溶状态;
B.将A所得焙烧渣磨细后,在硫酸浓度1~10%,液体(体积,ml)∶固体(重量,g)=4~9;1,温度70~94℃,进行二级选择性浸出,银和铜转入浸出液,锡和铅留在渣中;
C.将B所得浸出液,在温度30~80℃,用铜片静态置换银,得到纯银粉;
D.将C所得置换母液,用碱性溶液中和沉淀,得到氢氧化铜,回收铜。
2、如权利要求1所述的低银含量锡阳极泥提取银的方法,其特征是进行1A过程时,温度为680~740℃,料层间歇翻动。
3、如权利要求1所述的低银含量锡阳极泥提取银的方法,其特征是进行1B过程时,硫酸浓度1~1.5%,温度85~94℃,液体(体积,ml)∶固体(重量,g)=8∶1。第一级~2.5小时,第二级~1.5小时。
4、如权利要求1所述的低银含量锡阳极泥提取银的方法,其特征是进行1C过程时,温度40~45°,静态置换24小时。
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CN90106787A CN1027821C (zh) | 1990-08-04 | 1990-08-04 | 一种低银含量锡阳极泥提取银的方法 |
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CN90106787A CN1027821C (zh) | 1990-08-04 | 1990-08-04 | 一种低银含量锡阳极泥提取银的方法 |
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CN1058993A CN1058993A (zh) | 1992-02-26 |
CN1027821C true CN1027821C (zh) | 1995-03-08 |
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Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1045795C (zh) * | 1996-09-16 | 1999-10-20 | 昆明贵金属研究所 | 从电解生产双氧水的阳极泥回收铂和铅的方法 |
CN102259994B (zh) * | 2008-04-28 | 2012-11-14 | 重庆华浩冶炼有限公司 | 电解铜粉废液的处理方法 |
CN101570367B (zh) * | 2008-04-28 | 2011-09-14 | 重庆华浩冶炼有限公司 | 电解铜粉废液的处理方法及其应用 |
CN102031379A (zh) * | 2010-12-14 | 2011-04-27 | 东营方圆有色金属有限公司 | 一种分铜液电积法处理工艺 |
CN102382986A (zh) * | 2011-10-20 | 2012-03-21 | 铜陵有色金属集团股份有限公司 | 一种卡尔多炉炉砖的处理方法 |
CN103233127A (zh) * | 2013-05-08 | 2013-08-07 | 金川集团股份有限公司 | 一种分离铜阳极泥中贱金属与贵金属的方法 |
CN103498053A (zh) * | 2013-10-11 | 2014-01-08 | 金川集团股份有限公司 | 一种分离铜阳极泥中贱金属与贵金属的方法 |
CN103954524B (zh) * | 2013-12-11 | 2017-02-15 | 西部矿业股份有限公司 | 一种简便快速准确测定铅阳极泥中银的方法 |
CN104004917B (zh) * | 2014-06-16 | 2016-05-11 | 永兴县星城金属有限责任公司 | 从废杂铜阳极泥中回收铅锡合金的方法 |
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