CN102796878A - Method for enriching rhodium from rhodium-containing organic waste liquid - Google Patents
Method for enriching rhodium from rhodium-containing organic waste liquid Download PDFInfo
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- CN102796878A CN102796878A CN2012103083134A CN201210308313A CN102796878A CN 102796878 A CN102796878 A CN 102796878A CN 2012103083134 A CN2012103083134 A CN 2012103083134A CN 201210308313 A CN201210308313 A CN 201210308313A CN 102796878 A CN102796878 A CN 102796878A
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Abstract
The invention discloses a method for enriching rhodium from a rhodium-containing organic waste liquid, which comprises the following steps: mixing a rhodium-containing organic waste liquid with collector, additive and reducer according to a certain ratio; performing reduction smelting to obtain a rhodium-containing alloy; and using dilute acid to leach base metal from the alloy to obtain a rhodium-enriched substance. The method has the advantages of simple operation, concise process, high recovery rate and the like; the noble metal rhodium content of smelting slag is smaller than 0.5g/t; the rhodium-enriched substance content is greater than 25%; and the direct yield is greater than 99.2%.
Description
Technical field
The invention belongs to the precious metals metallurgy field, relate to a kind of method of enrichment rhodium.Particularly relate to a kind of from the rhodium-containing organic liquid waste method of enrichment rhodium.
Background technology
The method of enrichment rhodium mainly contains following several kinds in the rhodium-containing organic liquid waste at present: 1, the precipitator method: adopt hydrolytic precipitation or other chemical reagent to precipitate enrichment rhodium and other precious metals; Being a kind of classic methods, also is a kind of rare method in the present production practice.But the rhodium catalyst level of deactivation is high more, and it is more difficult to generate deposition, and the advantage of the precipitator method is that the catalyzer direct activation with the part inactivation obtains live catalyst, but the higher catalyzer of level of deactivation should not carry out activation with this method.2, washing method: be primarily aimed at and poison in the outside and cause a kind of method of rhodium catalyst inactivation, this method is to remove the material that causes poisoning of catalyst, thereby improves activity of such catalysts, does not play activation for catalyzer inside inactivation.3, chemical activation method: in decaying catalyst solution, add the rhodium bunch reaction after chemical reagent makes it inactivation, thereby have the small molecules rhodium species raising activity of such catalysts of catalytic activity, thereby be referred to as chemical method with generation.4, IX and absorption method: adopt ion exchange process absorption to reclaim the rhodium in the spent catalyst, have advantages such as with low cost, be used for the recovery of low content of noble metal more.IX and fractionation by adsorption are one of the most ancient separation methods.5, submerged combustion: the basic cpd of spent rhodium catalyst solution and IA or IIA family element is mixed, at high temperature burn into ash content, and handle ash content, obtain metal rhodium after foreign metal is removed in separation with reductive agents such as methyl alcohol, hydrazine or boron hydracid sodium.
The method of enrichment rhodium is varied from the rhodium-containing organic liquid waste at present; But do not have a kind of technology method easy, simple to operate, the present invention can not receive the influence of waste liquid component and chemical structure, and it is simple to have technology; Advantages such as the recovery of rhodium is high, and subsequent treatment process is simple.
Summary of the invention
The purpose of this invention is to provide that a kind of technology is simple, low-cost, the method for rhodium in the efficiently concentrating rhodium-containing organic liquid waste.Technical problem to be solved by this invention is an efficiently concentrating rhodium in the retailoring.
Of the present invention a kind of from the rhodium-containing organic liquid waste method of enrichment rhodium comprise:
(1) mixes, rhodium-containing organic liquid waste and trapping agent, additive, reductive agent are mixed according to a certain percentage;
(2) retailoring is packed compound in the plumbago crucible into, places intensification melting in the resistance furnace, and rhodium is got in the alloy, and smelting temperature is 1200～1450
oC, smelting time are 1～10h.
(3) selectivity leaches base metal, will contain the rhodium alloy selective leaching and go out base metal wherein, obtains the rhodium-containing enriched substance.
The material that the present invention uses is the rhodium-containing organic liquid waste.
The present invention leaches the acid used and is in the components such as hydrochloric acid, nitric acid, sulfuric acid one or more.
The trapping agent that the present invention uses is copper, lead, iron, tin etc.
The additive that the present invention uses as in the components such as lime, sodium sulfate one or more.
The reductive agent agent that the present invention uses is coal dust, coke powder etc.
The present invention leaches base metal through the retailoring selectivity, the technical indicator of acquisition:
(1) waste Noble Metal Rhodium content is less than 0.5g/t;
(2) the enriched substance rhodium content is greater than 25%;
(3) direct yield of Noble Metal Rhodium is greater than 99.2%.
Advantages such as advantage of the present invention mainly is: it is simple to have technology, and the recovery of rhodium is high, and subsequent treatment process is simple.Adopt the inventive method, melting does not have the flue gas emptying, and selectivity leaches to be reflected at does not have the waste gas discharge in the closed reactor, improved labor condition, has reduced cost, and the direct yield of rhodium is greater than 99.2%.
Description of drawings
Accompanying drawing is a process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Embodiment 1; Referring to accompanying drawing 1; Experiment take by weighing 500g trapping agent, reductive agent (containing fixed carbon 82.19%) proportioning be trapping agent 5%, additive formula be trapping agent 30%, adopt three-dimensional blender machine mixing, add organic rhodium solution 500ml, in high temperature resistance furnace, carry out retailoring; 1300 ℃ of reduction temperatures, recovery time 10h.The rhodium alloy that obtains leaches base metal through diluted acid (20%) selectivity and obtains rhodium enriched substance, direct yield 99.2%.
Embodiment 2; Referring to accompanying drawing 1; Experiment take by weighing 500g trapping agent, reductive agent (containing fixed carbon 82.19%) proportioning be trapping agent 5%, additive formula be trapping agent 30%, adopt three-dimensional blender machine mixing, add organic rhodium solution 500ml, in high temperature resistance furnace, carry out retailoring; 1350 ℃ of reduction temperatures, recovery time 8h.The rhodium alloy that obtains leaches base metal through diluted acid (20%) selectivity and obtains rhodium enriched substance, direct yield 99.5%.
Embodiment 3; Experiment take by weighing 500g trapping agent, reductive agent (containing fixed carbon 82.19%) proportioning be trapping agent 5%, additive formula be trapping agent 30%, adopt three-dimensional blender machine mixing; Add organic rhodium solution 500ml; In high temperature resistance furnace, carry out retailoring, 1400 ℃ of reduction temperatures, recovery time 6h.The rhodium alloy that obtains leaches base metal through diluted acid (20%) selectivity and obtains rhodium enriched substance, direct yield 99.5%.
Embodiment 4; Experiment take by weighing 500g trapping agent, reductive agent (containing fixed carbon 82.19%) proportioning be trapping agent 5%, additive formula be trapping agent 30%, adopt three-dimensional blender machine mixing; Add organic rhodium solution 500ml; In high temperature resistance furnace, carry out retailoring, 1450 ℃ of reduction temperatures, recovery time 4h.The rhodium alloy that obtains leaches base metal through diluted acid (20%) selectivity and obtains rhodium enriched substance, direct yield 99.6%.
Claims (3)
1. the method for an enrichment rhodium from the rhodium-containing organic liquid waste is characterized in that process step is following:
(1) mixes;
(2) retailoring;
(3) selectivity leaches base metal,
Concrete steps are: (1) is with rhodium-containing organic liquid waste and trapping agent, additive, reductive agent proportional mixing; (2) with the compound plumbago crucible of packing into, put into high temperature resistance furnace, be raised to 1200～1450
oC, smelting time is 1～10h, and rhodium is got in the alloy; (3) will contain rhodium alloy and add in the dilute acid soln, selectivity leaches base metal wherein, obtains the rhodium enriched substance.
2. according to claim 1 a kind of from the rhodium-containing organic liquid waste method of enrichment rhodium; The described trapping agent of its characterization step (1) is copper, lead, iron or tin; The ratio 1:1 of rhodium-containing organic liquid waste and trapping agent, additive are a kind of in lime or the laterite or both mixtures, and its consumption is 10 ~ 30% of a material; Described reductive agent is coke powder or coal dust, and its consumption is 3 ~ 10% of a material.
3. according to claim 1 a kind of from the rhodium-containing organic liquid waste method of enrichment rhodium, its characterization step (3) is described contain the rhodium alloy selective leaching go out acid that base metal adopts be in sulfuric acid, hydrochloric acid, the nitric acid one or more.
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| CN2012103083134A CN102796878A (en) | 2012-08-27 | 2012-08-27 | Method for enriching rhodium from rhodium-containing organic waste liquid |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109763A (en) * | 2014-06-04 | 2014-10-22 | 昆明有色冶金设计研究院股份公司 | Technology for smelting difficultly-treated precious metal-containing material |
| CN106282568A (en) * | 2015-05-29 | 2017-01-04 | 昆明冶金高等专科学校 | A kind of method being enriched with platinum group metal from spent automotive exhaust catalysts metallic carrier |
| CN107586956A (en) * | 2016-07-08 | 2018-01-16 | 昆明冶金高等专科学校 | A kind of method of efficiently concentrating rhodium in organic rhodium catalyst waste liquid from failure |
| CN108950233A (en) * | 2018-06-27 | 2018-12-07 | 北京科技大学 | A method of rhodium is recycled from inactivation rhodium-containing homogeneous catalyst |
| CN109609771A (en) * | 2018-12-31 | 2019-04-12 | 太原瑞麟贵金属回收有限公司 | Application of the metal powder in noble metal recycling |
| CN109897971A (en) * | 2019-02-18 | 2019-06-18 | 西安交通大学 | A kind of additive and method extracting platinum group metal from radioactive glass solidified body |
| CN113832356A (en) * | 2021-09-27 | 2021-12-24 | 格林美股份有限公司 | Method for separating and purifying rhodium in high-iron rhodium-containing feed liquid |
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| US20030236440A1 (en) * | 2002-06-20 | 2003-12-25 | Conoco Inc. | Recover and recycle rhodium from spent partial oxidation catalysts |
| CN101509077A (en) * | 2009-02-19 | 2009-08-19 | 昆明贵金属研究所 | Method for extracting platinum, palladium, rhodium from automotive catalyst of ore phase reconstruction |
| CN101575674A (en) * | 2001-06-28 | 2009-11-11 | 贵研铂业股份有限公司 | Method for recovering platinum metal from melting trapped material |
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2012
- 2012-08-27 CN CN2012103083134A patent/CN102796878A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101575674A (en) * | 2001-06-28 | 2009-11-11 | 贵研铂业股份有限公司 | Method for recovering platinum metal from melting trapped material |
| US20030236440A1 (en) * | 2002-06-20 | 2003-12-25 | Conoco Inc. | Recover and recycle rhodium from spent partial oxidation catalysts |
| CN101509077A (en) * | 2009-02-19 | 2009-08-19 | 昆明贵金属研究所 | Method for extracting platinum, palladium, rhodium from automotive catalyst of ore phase reconstruction |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109763A (en) * | 2014-06-04 | 2014-10-22 | 昆明有色冶金设计研究院股份公司 | Technology for smelting difficultly-treated precious metal-containing material |
| CN104109763B (en) * | 2014-06-04 | 2016-03-23 | 昆明有色冶金设计研究院股份公司 | A kind of difficult containing noble metal materials smelting technology |
| CN106282568A (en) * | 2015-05-29 | 2017-01-04 | 昆明冶金高等专科学校 | A kind of method being enriched with platinum group metal from spent automotive exhaust catalysts metallic carrier |
| CN107586956A (en) * | 2016-07-08 | 2018-01-16 | 昆明冶金高等专科学校 | A kind of method of efficiently concentrating rhodium in organic rhodium catalyst waste liquid from failure |
| CN108950233A (en) * | 2018-06-27 | 2018-12-07 | 北京科技大学 | A method of rhodium is recycled from inactivation rhodium-containing homogeneous catalyst |
| CN109609771A (en) * | 2018-12-31 | 2019-04-12 | 太原瑞麟贵金属回收有限公司 | Application of the metal powder in noble metal recycling |
| CN109897971A (en) * | 2019-02-18 | 2019-06-18 | 西安交通大学 | A kind of additive and method extracting platinum group metal from radioactive glass solidified body |
| CN113832356A (en) * | 2021-09-27 | 2021-12-24 | 格林美股份有限公司 | Method for separating and purifying rhodium in high-iron rhodium-containing feed liquid |
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Application publication date: 20121128 |