CN103243349A - Comprehensive zinc hydrometallurgy recovery system technique - Google Patents
Comprehensive zinc hydrometallurgy recovery system technique Download PDFInfo
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- CN103243349A CN103243349A CN2012104217850A CN201210421785A CN103243349A CN 103243349 A CN103243349 A CN 103243349A CN 2012104217850 A CN2012104217850 A CN 2012104217850A CN 201210421785 A CN201210421785 A CN 201210421785A CN 103243349 A CN103243349 A CN 103243349A
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Abstract
The invention discloses a comprehensive zinc hydrometallurgy recovery system technique which comprises a zinc hydrometallurgy technique, a floatation recovery technique and an extraction recovery technique; high leaching residue is obtained by leaching at high temperature and high acid through the zinc hydrometallurgy technique, and electrolysis waste liquor can be generated by electrodepositing zinc; and according to the floatation recovery technique, floatation is carried out after mixing the high leaching residue size, and silver concentrate and beneficiation wastewater are generated in the floatation process; and the extraction recovery technique consists of an extraction process and a reextraction process, the beneficiation wastewater is extracted in an extraction tank in the extraction process through an extractant, extraction raffinate is used for the high leaching residue size mixing in the floatation recovery technique, the organic extraction phase is reextracted in the reextraction process by the electrolysis waste liquor, regenerative organic phase returns back to the extraction process, and zinc-containing liquid flows in the neutral leaching and high-temperature and high-acid leaching steps in the leaching step of the zinc hydrometallurgy technique. According to the comprehensive zinc hydrometallurgy recovery system technique, the recovery rate of valuable metal is high, the economic benefits are obvious, no hidden safety hazard exists, and the environment pollution can be favorably reduced.
Description
Technical field
The invention belongs to the technical field of smelting of non-ferrous metal, be specifically related to a kind of zinc hydrometallurgy comprehensive recovery system technology.
Background technology
Zinc hydrometallurgy is that leach liquor obtained the process of zinc metal after the neutral leaching of zinc baking sand process and high temperature peracid leached by electrodeposition.The high temperature peracid produces a large amount of peracid leached muds after leaching, and abbreviates height as and soaks slag.Height soaks valuable metals such as argentiferous in the slag, zinc, lead, copper, valuable metal content is low, about the average 200g/T of slag argentiferous, wherein zinc 5-6%, leaded 2-3%, cupric 0.3-0.4%, the height of present domestic peracid extract technology output soaks slag and has reached annual more than 1,500,000 tons, because valuable metal content is low, many enterprises just are stored in the slag field and store up.
In order to improve the business economic benefit, reduce waste sludge discharge to the pollution of environment, domestic certain enterprise begins that height is soaked valuable metals such as silver in the slag, zinc, copper and reclaims research.At present, common practices is at first height to be soaked slag to carry out flotation and obtain silver preparation concentrate, and then from silver preparation concentrate, reclaim silver, valuable metals such as zinc, copper.
In the process of zinc hydrometallurgy and recovery valuable metal, each production technique is independently carried out, and does not have the recycle of fine realization waste water, does not realize the comprehensive reutilization of valuable metal, the production cost height, and economic benefit is low.
Summary of the invention
The object of the present invention is to provide a kind of zinc hydrometallurgy comprehensive recovery system technology, the recovery rate of valuable metals height of this method, remarkable in economical benefits, do not have potential safety hazard, be conducive to reduce environmental pollution.
The present invention is achieved by the following technical solutions: a kind of zinc hydrometallurgy comprehensive recovery system technology, and it is characterized in that: it comprises Zinc hydrometallurgy process, floatation recovery technology and recovery by extraction; Described Zinc hydrometallurgy process comprises leaching step and electrowinning zinc step, leaching step is zinc baking sand to be carried out neutrality earlier leach, carry out the high temperature peracid then and leach, the high temperature peracid leaches the generation height and soaks slag, and the electrowinning zinc step is leach liquor to be carried out electrodeposition obtain metallic zinc and the waste liquid that produces electrolysis; Described floatation recovery technology is height to be soaked slag carry out flotation after sizing mixing, and floatation process produces silver preparation concentrate and beneficiation wastewater; Described recovery by extraction comprises extraction process and reextraction process, extraction process carries out extraction treatment with extraction agent to beneficiation wastewater in extraction tank, produce extracted organic phase and raffinate, the height that raffinate is used for floatation recovery technology soaks slag and sizes mixing, the reextraction process is with the electrolysis waste solution that electrowinning zinc step in the Zinc hydrometallurgy process produces extracted organic phase to be stripped, the regeneration organic phase is returned extraction process, contain that zinc liquid enters that neutrality that Zinc hydrometallurgy process leaches step leaches and high temperature peracid leaching step in.
Zinc hydrometallurgy comprehensive recovery system technology of the present invention comprises that also silver preparation concentrate extracts valuable metal technology, and it comprises the steps:
(1) roasting: adopt fluidizing reactor that silver preparation concentrate is carried out oxidizing roasting and produce calcining, baking flue gas feeds acid making system relieving haperacidity with pipeline;
(2) leach: (a) sulfuric acid leaches: calcining is leached by sulfuric acid produce sulphuric leachate and sulfuric acid leached mud; (b) thiocarbamide leaches: the sulfuric acid leached mud is leached by thiocarbamide produce thiocarbamide leach liquor and waste residue;
(3) heavy silver: (a) the heavy silver of copper displacement: sulphuric leachate is adopted the heavy silver of copper method of replacing, send copper zinc recovery system further to reclaim copper and zinc through the liquid after the heavy silver of copper displacement; (b) the heavy silver gold of electrodeposition: the method for the heavy silver gold of thiocarbamide leach liquor employing electrodeposition is heavy silver-colored and golden, send Waste Water Treatment through the heavy silver gold of electrodeposition liquid afterwards;
(4) refining: will carry out melting, output silver ingot and ingot through copper displacement heavy silver and metal silver-colored and that the heavy silver gold of electrodeposition produces.
Described roasting, the maturing temperature that silver preparation concentrate is carried out oxidizing roasting is 550～650 ℃, roasting time is 3～4 hours.
Described sulfuric acid leaches: solid-to-liquid ratio 1: 3～7, beginning acid 30～100g/L, eventually sour 5～30g/L, 60 ℃～90 ℃ of temperature of reaction, 2～6 hours reaction times; Described thiocarbamide leaches: solid-to-liquid ratio 1: 4～12, pH value 1.5～2.0,40 ℃～60 ℃ of temperature of reaction, 2～6 hours reaction times.
The invention has the beneficial effects as follows:
Zinc hydrometallurgy comprehensive recovery system technology of the present invention, it can prolong the industrial chain of mineral resource development and utilization, zinc is smelted the waste that produces become raw material and all digestion, reach the cascade utilization of resource, turn waste into wealth, turn harm into good, realize cleaner production and eco-friendly target.
Beneficiation wastewater is reclaimed zinc by recovery by extraction, utilize electrolysis waste solution to strip, when having improved the recovery utilization rate of zinc, water resources has also obtained utilizing to greatest extent.
The invention allows for silver preparation concentrate and extract valuable metal technology, the roasting silver preparation concentrate burns the mistake rate and reaches 65%.Roasting not only makes nearly three times of valuable metal enrichment such as silver, makes the corresponding reduction of follow-up treatment capacity in kind, and the silver sulfide in the silver preparation concentrate is decomposed, and is conducive to the recovery of next step silver.Calcining leaches silver, copper and zinc by sulfuric acid, obtains the leach liquor of argentiferous, copper, zinc, obtains silver-colored enriched substance by the heavy silver of copper method of replacing and gives next step refining, and heavy silver back liquid send and reclaims copper zinc between copper zinc recovery vehicle.Owing to replace in the liquid after the copper of usefulness has also entered heavy silver, between copper zinc recovery vehicle, obtain reclaiming, reduced production cost, improve the comprehensive benefit that reclaims.
Description of drawings
Fig. 1 is zinc hydrometallurgy comprehensive recovery system process flow sheet of the present invention;
Fig. 2 is that silver preparation concentrate extracts the valuable metal process flow sheet.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in detail.
Embodiment 1: as depicted in figs. 1 and 2, a kind of zinc hydrometallurgy comprehensive recovery system technology, it comprises that Zinc hydrometallurgy process, floatation recovery technology, recovery by extraction and silver preparation concentrate extract valuable metal technology;
Described Zinc hydrometallurgy process comprises leaching step and electrowinning zinc step, leaching step is zinc baking sand to be carried out neutrality earlier leach, carry out the high temperature peracid then and leach, the high temperature peracid leaches the generation height and soaks slag, and the electrowinning zinc step is leach liquor to be carried out electrodeposition obtain metallic zinc and the waste liquid that produces electrolysis;
Described floatation recovery technology is height to be soaked slag carry out flotation after sizing mixing, and floatation process produces silver preparation concentrate and beneficiation wastewater;
Described recovery by extraction comprises extraction process and reextraction process, extraction process carries out extraction treatment with extraction agent to beneficiation wastewater in extraction tank, produce extracted organic phase and raffinate, the height that raffinate is used for floatation recovery technology soaks slag and sizes mixing, the reextraction process is with the electrolysis waste solution that electrowinning zinc step in the Zinc hydrometallurgy process produces extracted organic phase to be stripped, the regeneration organic phase is returned extraction process, contain that zinc liquid enters that neutrality that Zinc hydrometallurgy process leaches step leaches and high temperature peracid leaching step in;
Described silver preparation concentrate extracts valuable metal technology, and it comprises the steps:
(1) flotation: height is soaked slag add water with flotation reagent and utilize floatation equipment, through roughly selecting, scanning and the selected silver preparation concentrate that obtains;
(2) roasting: the oxidizing roasting time is 3.5 hours under 700 ℃ of conditions; Baking flue gas feeds acid making system relieving haperacidity with pipeline;
(3) sulfuric acid leaches: calcining is leached by sulfuric acid produce leach liquor and waste residue, solid-to-liquid ratio 1: 4, the sour 100g/L that begins, whole sour 30g/L, 50 ℃ of temperature of reaction, 5 hours reaction times;
(4) heavy silver: leach liquor is adopted the heavy silver of copper method of replacing, send copper zinc recovery system further to reclaim copper and zinc through the liquid after the heavy silver of copper displacement;
(5) silver-colored refining: will carry out melting, the output silver ingot through the heavy silver of copper displacement and the heavy silver-colored silver metal that produces of electrodeposition.
Embodiment 2: other is identical with embodiment 1, and difference is: described silver preparation concentrate extracts valuable metal technology in calcination steps (2): oxidizing roasting is 3.8 hours under 680 ℃ of conditions; Leach in the step (3) at sulfuric acid: solid-to-liquid ratio 1: 5, the sour 120g/L that begins, whole sour 60g/L, 60 ℃ of temperature of reaction, 4 hours reaction times.
Embodiment 3: other is identical with embodiment 1, and difference is: described silver preparation concentrate extracts valuable metal technology in calcination steps (2): the 3 hours oxidizing roasting time under 760 ℃ of conditions; Leach in the step (3) at sulfuric acid: solid-to-liquid ratio 1: 6, the sour 150g/L that begins, whole sour 70g/L, 70 ℃ of temperature of reaction, 3 hours reaction times.
Should be noted that at last; the content of above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; the simple modification that those of ordinary skill in the art carries out technical scheme of the present invention or be equal to replacement does not all break away from essence and the scope of technical solution of the present invention.
Claims (4)
1. zinc hydrometallurgy comprehensive recovery system technology, it is characterized in that: it comprises Zinc hydrometallurgy process, floatation recovery technology and recovery by extraction; Described Zinc hydrometallurgy process comprises leaching step and electrowinning zinc step, leaching step is zinc baking sand to be carried out neutrality earlier leach, carry out the high temperature peracid then and leach, the high temperature peracid leaches the generation height and soaks slag, and the electrowinning zinc step is leach liquor to be carried out electrodeposition obtain metallic zinc and the waste liquid that produces electrolysis; Described floatation recovery technology is height to be soaked slag carry out flotation after sizing mixing, and floatation process produces silver preparation concentrate and beneficiation wastewater; Described recovery by extraction comprises extraction process and reextraction process, extraction process carries out extraction treatment with extraction agent to beneficiation wastewater in extraction tank, produce extracted organic phase and raffinate, the height that raffinate is used for floatation recovery technology soaks slag and sizes mixing, the reextraction process is with the electrolysis waste solution that electrowinning zinc step in the Zinc hydrometallurgy process produces extracted organic phase to be stripped, the regeneration organic phase is returned extraction process, contain that zinc liquid enters that neutrality that Zinc hydrometallurgy process leaches step leaches and high temperature peracid leaching step in.
2. zinc hydrometallurgy comprehensive recovery system technology according to claim 1 is characterized in that: it comprises that also silver preparation concentrate extracts valuable metal technology, and it comprises the steps:
(1) roasting: adopt fluidizing reactor that silver preparation concentrate is carried out oxidizing roasting and produce calcining, baking flue gas feeds acid making system relieving haperacidity with pipeline;
(2) leach: (a) sulfuric acid leaches: calcining is leached by sulfuric acid produce sulphuric leachate and sulfuric acid leached mud; (b) thiocarbamide leaches: the sulfuric acid leached mud is leached by thiocarbamide produce thiocarbamide leach liquor and waste residue;
(3) heavy silver: (a) the heavy silver of copper displacement: sulphuric leachate is adopted the heavy silver of copper method of replacing, send copper zinc recovery system further to reclaim copper and zinc through the liquid after the heavy silver of copper displacement; (b) the heavy silver gold of electrodeposition: the method for the heavy silver gold of thiocarbamide leach liquor employing electrodeposition is heavy silver-colored and golden, send Waste Water Treatment through the heavy silver gold of electrodeposition liquid afterwards;
(4) refining: will carry out melting, output silver ingot and ingot through copper displacement heavy silver and metal silver-colored and that the heavy silver gold of electrodeposition produces.
3. zinc hydrometallurgy comprehensive recovery system technology according to claim 2 is characterized in that: described roasting, and the maturing temperature that silver preparation concentrate is carried out oxidizing roasting is 550～650 ℃, roasting time is 3～4 hours.
4. zinc hydrometallurgy comprehensive recovery system technology according to claim 3 is characterized in that: described sulfuric acid leaching: solid-to-liquid ratio 1: 3～7, beginning acid 30～100g/L, eventually sour 5～30g/L, 60 ℃～90 ℃ of temperature of reaction, 2～6 hours reaction times; Described thiocarbamide leaches: solid-to-liquid ratio 1: 4～12, pH value 1.5～2.0,40 ℃～60 ℃ of temperature of reaction, 2～6 hours reaction times.
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| CN2012104217850A CN103243349A (en) | 2012-05-24 | 2012-10-30 | Comprehensive zinc hydrometallurgy recovery system technique |
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| CN2012101630983A CN102690947A (en) | 2012-05-24 | 2012-05-24 | Smelting process of silver concentrate |
| CN201210163098.3 | 2012-05-24 | ||
| CN2012104217850A CN103243349A (en) | 2012-05-24 | 2012-10-30 | Comprehensive zinc hydrometallurgy recovery system technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551256A (en) * | 2013-11-06 | 2014-02-05 | 株洲市湘麒科技开发有限公司 | Activating agent for use in floatation of silver in zinc hydrometallurgy acid leaching pulp |
| CN111349794A (en) * | 2019-12-06 | 2020-06-30 | 中国船舶重工集团公司七五0试验场 | Automatic control method for lead-zinc ore smelting and selecting combined process |
| CN113403483A (en) * | 2021-05-26 | 2021-09-17 | 来宾华锡冶炼有限公司 | Method for extracting silver from high-iron, high-tin and high-indium flotation silver concentrate |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032145B (en) * | 2014-06-23 | 2015-07-29 | 贵州顶效开发区宏达金属综合回收有限公司 | The method of a kind of extraction and isolation Ag, Cu from flotation of silver concentrate |
| CN106676279A (en) * | 2017-01-13 | 2017-05-17 | 昆明理工大学 | Method for recycling silver through wet-process leaching |
| CN108070712B (en) * | 2017-12-15 | 2019-12-03 | 郴州市金贵银业股份有限公司 | A kind of silver is electrolysed the recovery method of valuable metal in mother liquor purification slag |
| CN111778406B (en) * | 2019-08-27 | 2021-10-26 | 昆明理工大学 | Comprehensive utilization method of zinc roasting oxidation waste residue |
| CN112708772B (en) * | 2020-12-23 | 2022-03-11 | 紫金矿业集团股份有限公司 | Method for high-valued and synergistic dechlorination of zinc smelting intermediate material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858272A (en) * | 2006-06-07 | 2006-11-08 | 祥云县飞龙实业有限责任公司 | Combined process for organic solvent extracting zinc and wet zinc refining |
-
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- 2012-10-30 CN CN2012104217850A patent/CN103243349A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858272A (en) * | 2006-06-07 | 2006-11-08 | 祥云县飞龙实业有限责任公司 | Combined process for organic solvent extracting zinc and wet zinc refining |
Non-Patent Citations (2)
| Title |
|---|
| 周国华等: "湿法炼锌浸出渣中回收银的研究及实践", 《矿产综合利用》, no. 1, 28 February 2001 (2001-02-28), pages 23 - 27 * |
| 周敬元: "湿法炼锌浸出渣浮选银精矿的处理", 《湖南冶金》, no. 2, 1 May 1983 (1983-05-01), pages 11 - 17 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551256A (en) * | 2013-11-06 | 2014-02-05 | 株洲市湘麒科技开发有限公司 | Activating agent for use in floatation of silver in zinc hydrometallurgy acid leaching pulp |
| CN103551256B (en) * | 2013-11-06 | 2015-12-30 | 湖南华麒资源环境科技发展有限公司 | A kind of activator of zinc hydrometallurgy acid leaching ore pulp silver floatation |
| CN111349794A (en) * | 2019-12-06 | 2020-06-30 | 中国船舶重工集团公司七五0试验场 | Automatic control method for lead-zinc ore smelting and selecting combined process |
| CN111349794B (en) * | 2019-12-06 | 2022-04-12 | 中国船舶重工集团公司七五0试验场 | Automatic control method for lead-zinc ore smelting and selecting combined process |
| CN113403483A (en) * | 2021-05-26 | 2021-09-17 | 来宾华锡冶炼有限公司 | Method for extracting silver from high-iron, high-tin and high-indium flotation silver concentrate |
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Application publication date: 20130814 |