CN104018009B - Separating and purifying technology for bismuth metal - Google Patents
Separating and purifying technology for bismuth metal Download PDFInfo
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- CN104018009B CN104018009B CN201410275099.6A CN201410275099A CN104018009B CN 104018009 B CN104018009 B CN 104018009B CN 201410275099 A CN201410275099 A CN 201410275099A CN 104018009 B CN104018009 B CN 104018009B
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Abstract
The invention relates to a separating and purifying technology for bismuth metal, and belongs to the technical field of physical separation. The separating and purifying technology is specifically as follows: heating lead and bismuth alloy materials to 500-550 DEG C in an electric-arc furnace, so that the alloy materials are molten into molten metal; slowly pre-heating a distillation furnace while vacuum-pumping, and sucking the molten metal in an electric-arc furnace melting tank into a distillation plate of the distillation furnace by a guide tube; boiling and evaporating the molten metal in the distillation plate to produce bismuth steam; guiding the bismuth steam into a condensing cover for condensing and gathering, and collecting bismuth powder with purity not less than 99.5%; discharging and casting the un-evaporated molten metal as a lead ingot. The separating and purifying technology disclosed by the invention is less in equipment and investment, low in cost, low in energy consumption, small in environmental pollution, and almost free of waste gas, and does not produce wastewater, and is extremely few in waste residues.
Description
Technical field
The present invention relates to the separating and purifying method from a kind of bismuth metal, belong to Physical Separation Technology field.
Background technology
Bismuth, ordination number 83, silvery white or blush, have metalluster.The production technology comparative maturity of external bismuth metal, bismuth compounds kind is more, and Application Areas is comparatively wide, and use value is higher.Wherein bismuth metal main production process has three kinds: Bettertan-Kroll method, thermal process and electrolytic purification technology.Current domestic lead, bismuth isolation technique are mainly based on chlorination process and electrolytic process.But two kinds of methods all need to use chemical agent, and easy contaminate environment, environment toxic is large.
Summary of the invention
In order to solve environmental problem, the present invention proposes a kind of separating and purifying method of bismuth metal, this technology be simple, can continuous seepage and good reliability.Bismuth purity >=99.5% after separating-purifying.
Technical solution of the present invention is: a kind of separating and purifying method of bismuth metal, uses lead, bismuth alloy material, lead, bismuth alloy material is heated to 500-550 DEG C in electric arc furnace, makes it to be fused into molten metal, is stored in electric arc furnace molten bath; Preheating limit, slow for distilling furnace limit is vacuumized, as distilling furnace vacuum tightness≤20Pa, when preheating temperature is 800-1000 DEG C, by conduit, the molten metal in electric arc furnace molten bath is sucked in the distillation tray of distilling furnace; Continue to vacuumize; When vacuum tightness is lower than 10Pa, close distilling furnace pre-heating system, start to be heated to separately 1500 DEG C to distillation tray, and steady temperature is 1500 ± 2 DEG C, molten metal is seethed with excitement in distillation tray and evaporates to produce bismuth steam, bismuth steam is imported condensing cover condensation assemble, collect the bismuth meal of purity >=99.5%; Do not have the molten metal evaporated then to discharge and be cast into lead pig.
In above-mentioned leaded, bismuth alloy material, calculate by weight percentage, Fe, Cu, As, Cd are below 0.45%, and Sb is below 0.6%, and Ag is within 1.85%.
Beneficial effect of the present invention is: relative usage chemical agent or electrolytic process extract bismuth, and this technique (1) equipment and input are less, with low cost; (2) energy consumption is low, and environmental pollution is little, does not almost have waste gas, does not produce waste water, and waste residue is few; (3) isolated bismuth purity high (>=99.5%), without the need to follow-up continuation processing.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Leaded, bismuth alloy material 100g that the present embodiment adopts, calculate, Fe0.27%, Cu0.16%, As0.042%, Cd0.055%, Sb 0.46%, Ag 1.82% by weight percentage.
Lead, bismuth alloy material are heated to 500 DEG C in electric arc furnace, make it to be fused into molten metal, be stored in electric arc furnace molten bath; Preheating limit, slow for distilling furnace limit is vacuumized, as distilling furnace vacuum tightness 18Pa, when preheating temperature is 900 DEG C, by conduit, the molten metal in electric arc furnace molten bath is sucked in the distillation tray of distilling furnace; Continue to vacuumize; When vacuum tightness is lower than 9Pa, close distilling furnace pre-heating system, start to be heated to separately 1500 DEG C to distillation tray, and steady temperature is 1500 ± 2 DEG C, molten metal is seethed with excitement in distillation tray and evaporates to produce bismuth steam, bismuth steam is imported condensing cover condensation assemble, collect the bismuth meal 22g of purity >=99.5%; Do not have the molten metal evaporated then to discharge and be cast into lead pig 86g.
Claims (1)
1. a separating and purifying method for bismuth metal, uses lead, bismuth alloy material; It is characterized in that lead, bismuth alloy material to be heated to 500-550 DEG C in electric arc furnace, make it to be fused into molten metal, be stored in electric arc furnace molten bath; Preheating limit, slow for distilling furnace limit is vacuumized, as distilling furnace vacuum tightness≤20Pa, when preheating temperature is 800-1000 DEG C, by conduit, the molten metal in electric arc furnace molten bath is sucked in the distillation tray of distilling furnace; Continue to vacuumize; When vacuum tightness is lower than 10Pa, close distilling furnace pre-heating system, start to be heated to separately 1500 DEG C to distillation tray, and steady temperature is 1500 ± 2 DEG C, molten metal is seethed with excitement in distillation tray and evaporates to produce bismuth steam, bismuth steam is imported condensing cover condensation assemble, collect the bismuth meal of purity >=99.5%; Do not have the molten metal evaporated then to discharge and be cast into lead pig;
In above-mentioned leaded, bismuth alloy material, calculate by weight percentage, Fe, Cu, As, Cd are below 0.45%, and Sb is below 0.6%, and Ag is within 1.85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410275099.6A CN104018009B (en) | 2014-06-19 | 2014-06-19 | Separating and purifying technology for bismuth metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410275099.6A CN104018009B (en) | 2014-06-19 | 2014-06-19 | Separating and purifying technology for bismuth metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104018009A CN104018009A (en) | 2014-09-03 |
| CN104018009B true CN104018009B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410275099.6A Active CN104018009B (en) | 2014-06-19 | 2014-06-19 | Separating and purifying technology for bismuth metal |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779790A (en) * | 2016-04-12 | 2016-07-20 | 永兴佳盛有色金属再生利用有限责任公司 | Method for removing lead and purifying bismuth from lead-bismuth material through vacuum distillation |
| CN106048243B (en) * | 2016-08-11 | 2018-06-05 | 永兴佳盛环保科技有限责任公司 | A kind of method that high bismuth crude tin alloy vacuum distillation depth removes bismuth |
| CN108160305B (en) * | 2018-02-08 | 2019-10-18 | 韶关学院 | A kind of mixed metal powder separation method and atmosphere furnace used |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10158754A (en) * | 1996-11-26 | 1998-06-16 | Dowa Mining Co Ltd | Production of high-purity bismuth and apparatus for production |
| CN101525694A (en) * | 2009-04-17 | 2009-09-09 | 深圳市中金岭南有色金属股份有限公司韶关冶炼厂 | Separation process for material containing lead, antimony, copper, bismuth and silver |
| CN101696469A (en) * | 2009-10-29 | 2010-04-21 | 昆明理工大学 | Method for separating multi-element alloy of lead, bismuth, gold, silver and copper |
| CN102168179A (en) * | 2011-04-07 | 2011-08-31 | 赵志强 | Technology for producing Au and Ag from precious Pb by vacuum distillation |
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2014
- 2014-06-19 CN CN201410275099.6A patent/CN104018009B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10158754A (en) * | 1996-11-26 | 1998-06-16 | Dowa Mining Co Ltd | Production of high-purity bismuth and apparatus for production |
| CN101525694A (en) * | 2009-04-17 | 2009-09-09 | 深圳市中金岭南有色金属股份有限公司韶关冶炼厂 | Separation process for material containing lead, antimony, copper, bismuth and silver |
| CN101696469A (en) * | 2009-10-29 | 2010-04-21 | 昆明理工大学 | Method for separating multi-element alloy of lead, bismuth, gold, silver and copper |
| CN102168179A (en) * | 2011-04-07 | 2011-08-31 | 赵志强 | Technology for producing Au and Ag from precious Pb by vacuum distillation |
Non-Patent Citations (1)
| Title |
|---|
| 陈枫.铋铅合金真空蒸馏脱铅规律研究.《有色金属(冶炼部分)》.1992,(第1期), * |
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| CN104018009A (en) | 2014-09-03 |
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Address after: Jiangbei Industrial Park 423400 Chenzhou city of Hunan province Zixing Economic Development Zone Patentee after: Hunan Huaxin rare expensive Polytron Technologies Inc Address before: Jiangbei Industrial Park 423400 Chenzhou city of Hunan Province in Zixing City Huaxin company Patentee before: Hunan Huaxin Nonerrous Metals Co., Ltd. |