CN1162649A - Method for enriching noble metals and extracting zinc by vacuum vaporization - Google Patents
Method for enriching noble metals and extracting zinc by vacuum vaporization Download PDFInfo
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- CN1162649A CN1162649A CN 97101388 CN97101388A CN1162649A CN 1162649 A CN1162649 A CN 1162649A CN 97101388 CN97101388 CN 97101388 CN 97101388 A CN97101388 A CN 97101388A CN 1162649 A CN1162649 A CN 1162649A
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- zinc
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Abstract
A vacuum distillation process for extracting Zn and slags rich in rare noble metals features that the Zn alloy containing rare noble metals (Ge, Ga, In, Au, Ag, etc.) is distilled in vacuum furnace at 800-1000 deg.C and 100-2000 Pa for 10-15 hrs. Its advantages are short technical flow, high recovery rate, low energy consumption and cost, and no pollution.
Description
Vacuum distillation zinc extraction and enrichment rare precious metal method are a kind of nonferrous metallurgy methods.
Contain many rare precious metals in the output byproduct zinc alloy in the known pyrometallurgy of zinc process (is other zinc alloys of matrix as zinc-iron alloy and with zinc), as germanium, gallium, indium, gold and silver etc.The method of this class zinc alloy of known processing is to steam zinc in muffle and induction furnace, then uses hydrometallurgical process, to reclaim rare precious metal.There are many problems in wet processing operation under normal pressure, and as long flow path, metal recovery rate is low, energy consumption and supplementary product onsumption height, and the enrichment multiple of rare precious metal is little.
The objective of the invention is: adopt vacuum oven to come the distilled zinc alloy, make zinc alloy become zinc, rare precious metal is enriched in the distillation residue, its content reaches the doubly content in raw material (zinc alloy) of 10-20.
Fig. 1 is a process flow sheet of the present invention, and the zinc alloy raw material that contains rare precious metal distills in vacuum oven, 800-1000 ℃ of furnace temperature of control, vacuum tightness 100-2000Pa, distillation time 10-15 hour, the residue of rare precious metal that promptly obtained zinc and enrichment.
The technical indicator that obtains: the extraction yield of zinc is greater than 75%, and the accumulation rate of germanium, gallium, indium, gold and silver etc. is 7-20 a times of content in the raw material (zinc alloy), power consumption 1200-1500 degree/ton material.
The advantage that has of the present invention compared with prior art:
1. flow process is short, and equipment is simple, has replaced every sunken stove and induction furnace with vacuum oven;
2. the accumulation rate height of zinc and rare precious metal makes the material amount that enters the following process program reduce, and has improved the rate of recovery of metal, and the scale of following process equipment also therefore reduces.
3. the treatment capacity of vacuum oven is big, and energy consumption is low, and the metal tooling cost is low;
4. job safety is reliable, pollution-free.
Embodiment one
1. get 0.5 ton of raw material hard zinc (germanic 0.4%), go into vacuum oven and smelt.
2. vacuumize and make furnace pressure reach 150-2000Pa, be warming up to 800-1200 ℃, keep about 14 hours, termination of pumping, have a power failure, put the zinc casting ingot, take out distillation residue, finish a smelting process.
3. it is germanic 0.035% to produce the about 400kg of zinc, and product slag 80kg is germanic 3%, the about 1500 degree/stoves of power consumption.
Embodiment two
Get the zinc alloy that contains rare precious metal and go into vacuum oven for 2.5 tons, distill under the technical qualification of the same example, obtaining zinc and rare precious metal accumulation rate is the residue of material content more than 10 times.Power consumption is 1200-1500 degree/ton material.
Claims (2)
1. vacuum distillation zinc extraction and enrichment rare precious metal method, it is characterized in that: contain the zinc alloy of rare precious metal, raw material distills in vacuum oven, 800-1000 ℃ of control furnace temperature, vacuum tightness 100-2000Pa, distillation time 10-15 hour, the residue of rare precious metal that obtained zinc and enrichment.
2. vacuum distillation zinc extraction according to claim 1 and enrichment rare precious metal method, it is characterized in that: raw material is a hard zinc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97101388 CN1162649A (en) | 1997-02-28 | 1997-02-28 | Method for enriching noble metals and extracting zinc by vacuum vaporization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97101388 CN1162649A (en) | 1997-02-28 | 1997-02-28 | Method for enriching noble metals and extracting zinc by vacuum vaporization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1162649A true CN1162649A (en) | 1997-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97101388 Pending CN1162649A (en) | 1997-02-28 | 1997-02-28 | Method for enriching noble metals and extracting zinc by vacuum vaporization |
Country Status (1)
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| CN (1) | CN1162649A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065919C (en) * | 1998-04-24 | 2001-05-16 | 昆明理工大学 | Vacuum distillation of hard zinc to extract zinc and to concentrate germanium, indium and silver |
| CN102011006A (en) * | 2010-11-17 | 2011-04-13 | 厦门火炬特种金属材料有限公司 | Method for performing vacuum separation and purification on coating-containing zinc alloy |
| CN107267758A (en) * | 2017-06-01 | 2017-10-20 | 华东师范大学 | Recovery indium, the method for silver from the waste and old component of Hall containing indium |
| CN108007816A (en) * | 2017-12-18 | 2018-05-08 | 清远先导材料有限公司 | The detection method of active metal simple substance in a kind of hard zinc |
| CN109609779A (en) * | 2019-02-19 | 2019-04-12 | 东北大学 | A method of primary aluminum, which is carried out, using vacuum distillation removes gallium |
| CN112725625A (en) * | 2020-12-18 | 2021-04-30 | 广东先导稀材股份有限公司 | Recovery method of hard zinc material |
-
1997
- 1997-02-28 CN CN 97101388 patent/CN1162649A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065919C (en) * | 1998-04-24 | 2001-05-16 | 昆明理工大学 | Vacuum distillation of hard zinc to extract zinc and to concentrate germanium, indium and silver |
| CN102011006A (en) * | 2010-11-17 | 2011-04-13 | 厦门火炬特种金属材料有限公司 | Method for performing vacuum separation and purification on coating-containing zinc alloy |
| CN102011006B (en) * | 2010-11-17 | 2012-08-22 | 厦门火炬特种金属材料有限公司 | Method for performing vacuum separation and purification on coating-containing zinc alloy |
| CN107267758A (en) * | 2017-06-01 | 2017-10-20 | 华东师范大学 | Recovery indium, the method for silver from the waste and old component of Hall containing indium |
| CN107267758B (en) * | 2017-06-01 | 2018-11-09 | 华东师范大学 | The method of recovery indium, silver from the waste and old component of Hall containing indium |
| CN108007816A (en) * | 2017-12-18 | 2018-05-08 | 清远先导材料有限公司 | The detection method of active metal simple substance in a kind of hard zinc |
| CN109609779A (en) * | 2019-02-19 | 2019-04-12 | 东北大学 | A method of primary aluminum, which is carried out, using vacuum distillation removes gallium |
| CN112725625A (en) * | 2020-12-18 | 2021-04-30 | 广东先导稀材股份有限公司 | Recovery method of hard zinc material |
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