CN103643045A - Treatment method of vanadium extraction tailings - Google Patents
Treatment method of vanadium extraction tailings Download PDFInfo
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- CN103643045A CN103643045A CN201310662640.4A CN201310662640A CN103643045A CN 103643045 A CN103643045 A CN 103643045A CN 201310662640 A CN201310662640 A CN 201310662640A CN 103643045 A CN103643045 A CN 103643045A
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Abstract
The invention provides a treatment method of vanadium extraction tailings, which comprises the following steps: adding a reducer and adhesives into vanadium extraction tailings, and pressing the material into pellets; roasting the pellets; crushing the roasted magnetized pellets, and carrying out magnetic separation to obtain an iron-rich material and tailings; and carrying out acid dipping, filtration, vanadium deposition and electrolysis on the tailings to obtain a vanadium product and a manganese product. The method can comprehensively utilize the vanadium extraction tailings at high added value, and has favorable environmental benefits and social benefits.
Description
Technical field
The application relates to environmental protection and secondary resource comprehensive utilization, and specifically, the application relates to a kind for the treatment of process of tailings in vanadium extraction.
Background technology
Tailings in vanadium extraction is the Main By product of vanadium-rich slag in sodium roasting Leaching Vanadium technological process, be mainly the oxide compound of iron, silicon, manganese, titanium, chromium, aluminium etc., at present main processing mode be extract residual vanadium, return sintering as addition material, produce vanadium-titanium black ceramic product etc., all there are pros and cons in three kinds of processing modes, and utilization is lower, cannot all consume a large amount of tailings in vanadium extraction resources.
Patent CN200810106422 discloses a kind for the treatment of process of tailings in vanadium extraction, joins carbonaceous reducing agent and reduces, by the separated Magnetic Materials of magnetic separation process and nonmagnetics in tailings in vanadium extraction.Patent CN200910235546 also discloses tailings in vanadium extraction has been reduced to sponge iron, by magnetic separation, isolates sponge iron.Patent CN201010152845 discloses the method for utilizing tailings in vanadium extraction and acid ammonium salt vanadium wastewater.Patent CN201010207295 discloses and tailings in vanadium extraction is joined to reductive agent, flux, binding agent has made the method that reclaims iron, vanadium, chromium and gallium after pelletizing by dark reduction.Patent CN201110185395 discloses by alkaline leaching and has reclaimed the method that remains vanadium in tailings in vanadium extraction.Patent CN201010238224 and CN201210331163 disclose tailings in vanadium extraction have been gone back to original production containing the method for the alloys such as vanadium, manganese deeply by high temperature.Patent CN201210368282 discloses the method for utilizing tailings in vanadium extraction to produce vanadium-titanium black ceramic.
Yet the above-mentioned method of tailings in vanadium extraction of utilizing cannot consume a large amount of tailings in vanadium extraction that produce in production.
Summary of the invention
In order to overcome the problems of the prior art, the invention provides a kind for the treatment of process of tailings in vanadium extraction, the treating method comprises following steps: in tailings in vanadium extraction, add reductive agent and binding agent and above-mentioned material is pressed into pelletizing; The above-mentioned pelletizing of roasting; The magnetization pelletizing that obtains after roasting is broken and carry out magnetic separation, obtain rich iron charge and mine tailing; Mine tailing obtains vanadium product and manganese product by acidleach, filtration, precipitation and electrolysis.
According to exemplary embodiment of the present invention, reductive agent is coal dust, granularity below 100 orders, fixed carbon content 70%～75%, in the gross weight of tailings in vanadium extraction, reductive agent and binding agent, the addition of reductive agent is 8%～12%.
According to exemplary embodiment of the present invention, binding agent is organic binder bond, and in the gross weight of tailings in vanadium extraction, reductive agent and binding agent, the addition of binding agent is 3～4%.Described organic binder bond is polyose.
According to exemplary embodiment of the present invention, in the process of roasting tailings in vanadium extraction, reductive agent and binding agent, pelletizing is reduced to processing by rotary hearth furnace, reduction temperature is 800 ℃～1000 ℃, roasting time is 0.5～1.5h.
According to exemplary embodiment of the present invention, the magnetization pelletizing obtaining after roasting is cooling and broken, and below grinding to 250 order, by two stages of magnetic separation, first paragraph magneticstrength is 0.5T, and second segment magneticstrength is 0.2T, and the Magnetic Materials finally obtaining is rich iron charge.
According to exemplary embodiment of the present invention, mine tailing is carried out to acidleach processing, temperature is 100～120 ℃, makes vanadium in tailings in vanadium extraction, manganese etc. enter solution, then by filtering, obtains being rich in the solution of vanadium, manganese etc.
According to the treatment process of tailings in vanadium extraction of the present invention, can make tailings in vanadium extraction obtain the comprehensive utilization that added value is higher, and there is good environmental benefit and social benefit.
Accompanying drawing explanation
Detailed description of the present invention in conjunction with the drawings, it is clearer that the features and advantages of the present invention will become.
Fig. 1 is according to the schema of the treatment process of the tailings in vanadium extraction of the embodiment of the present invention.
Embodiment
Hereinafter, describe with reference to the accompanying drawings embodiments of the invention in detail.
The tailings in vanadium extraction using in the application sees the following form shown in 1 for sodium tailings in vanadium extraction, its main component.
Table 1 tailings in vanadium extraction chemical composition %
| Na 2O | MgO | Al 2O 3 | SiO 2 | P 2O 5 | SO 3 | CaO | TiO 2 | V 2O 5 | Cr 2O 3 | MnO | Fe 2O 3 | TFe |
| 5.9 | 4.75 | 3.89 | 15.48 | 0.1 | 0.318 | 1.92 | 10.59 | 1.57 | 2.18 | 9.1 | 44.9 | 31.4 |
In order reasonably to use and process tailings in vanadium extraction, according to the treatment process of tailings in vanadium extraction of the present invention, comprise the following steps: in tailings in vanadium extraction, add reductive agent and binding agent and above-mentioned material is pressed into pelletizing; The above-mentioned pelletizing of roasting; The magnetization pelletizing that obtains after roasting is broken and carry out magnetic separation, obtain rich iron charge and mine tailing; Mine tailing obtains vanadium product and manganese product by acidleach, filtration, precipitation and electrolysis.The rich iron charge obtaining can be applied to iron-smelting process.
According to exemplary embodiment of the present invention, reductive agent can be coal dust, granularity below 100 orders, fixed carbon content 70%～75%, in the gross weight of tailings in vanadium extraction, reductive agent and binding agent, the addition of reductive agent is 8%～12%.
According to exemplary embodiment of the present invention, binding agent adopts organic binder bond, and main component is polyose, and in the gross weight of tailings in vanadium extraction, reductive agent and binding agent, the addition of binding agent is 3～4%.
According to exemplary embodiment of the present invention, after tailings in vanadium extraction, reductive agent and binding agent are mixed, adopt ball press to be pressed into cooled agglomerated pellet, and at 100～300 ℃ drying treatment.
According to exemplary embodiment of the present invention, in the process of roasting tailings in vanadium extraction, reductive agent and binding agent, pelletizing is reduced to processing by rotary hearth furnace, reduction temperature is 800 ℃～1000 ℃, roasting time is 0.5～1.5h.Preferably, pack the pelletizing after reduction into batch can, nitrogen envelope is cooling.
According to exemplary embodiment of the present invention, the magnetization pelletizing obtaining after roasting is cooling and broken, below grinding to 250 order, by two stages of magnetic separation, first paragraph magneticstrength is 0.5T, and second segment magneticstrength is 0.2T, the Magnetic Materials finally obtaining is rich iron charge, and iron grade reaches more than 60%.
According to exemplary embodiment of the present invention, by mine tailing (, nonmagnetic substance) adopt the spent acid (acidity 18～25%) of sulfate process titanium dioxide enterprise by-product to carry out acidleach processing, temperature is 100～120 ℃, and constantly stir, make vanadium in tailings in vanadium extraction, manganese etc. enter solution, then by filtering, separated with other impurity with silicon-dioxide, titanium dioxide in slag, obtain being rich in the solution of vanadium, manganese etc.Preferably, this solution is carried out to removal of impurities, as iron, chromium etc., at the precipitation of precipitation technique and the electrolytic manganese by traditional, obtain vanadium product and manganese product.
Hereinafter, will describe according to a particular embodiment of the invention.
Embodiment 1:
By weight, by 84% tailings in vanadium extraction, 12% coal dust and 4% polyose binding agent mix and are pressed into pelletizing, rotary hearth furnace reduction, temperature is 800 ℃, and time 1.5h, below magnetization pelletizing crushing and grinding to 250 order obtaining, by two stages of magnetic separation enrichment, obtain rich iron charge, non magnetic material, by 100 ℃ of acidleach of spent acid (acidity 25%), filters the solution obtaining containing vanadium, manganese etc., by impurity such as removal of impurities separation of iron, chromium, then by traditional precipitation and electrolytic manganese process, obtain vanadium product and manganese product.
Embodiment 2:
By weight, 87% tailings in vanadium extraction, 10% coal dust and 3% polyose binding agent are mixed and are pressed into pelletizing, rotary hearth furnace reduction, 1000 ℃ of temperature, time 0.5h, below magnetization pelletizing crushing and grinding to 250 order obtaining, by two stages of magnetic separation enrichment, obtain rich iron charge, non magnetic material is by 120 ℃ of acidleach of spent acid (acidity 18%), filtration obtains the solution containing vanadium, manganese etc., by impurity such as removal of impurities separation of iron, chromium, then by traditional precipitation and electrolytic manganese process, obtains vanadium product and manganese product.
Embodiment 3:
By weight, 85% tailings in vanadium extraction, 11% coal dust and 4% polyose binding agent are mixed and are pressed into pelletizing, rotary hearth furnace reduction, 900 ℃ of temperature, time 1h, below magnetization pelletizing crushing and grinding to 250 order obtaining, by two stages of magnetic separation enrichment, obtain rich iron charge, non magnetic material is by 110 ℃ of acidleach of spent acid (acidity 20%), filtration obtains the solution containing vanadium, manganese etc., by impurity such as removal of impurities separation of iron, chromium, then by traditional precipitation and electrolytic manganese process, obtains vanadium product and manganese product.
According to the treatment process of tailings in vanadium extraction of the present invention, by add reductive agent and binding agent in tailings in vanadium extraction, and make the ferric charge in tailings in vanadium extraction be reduced to magnetic substance (iron or metallic iron at a low price) by equipment such as rotary hearth furnaces, obtain rich iron charge, can be applied to Iron-smelting, non magnetic material adopts the spent acid (acidity 18～25%) of sulfate process titanium dioxide enterprise by-product to carry out acidleach processing, make vanadium in tailings in vanadium extraction, manganese etc. enter solution, again by precipitation, the techniques such as concentrated and electrolysis are produced respectively vanadium, manganese material.This technique can make tailings in vanadium extraction obtain the comprehensive utilization that added value is higher, and has good environmental benefit and social benefit.
Claims (7)
1. a treatment process for tailings in vanadium extraction, is characterized in that the treating method comprises following steps:
In tailings in vanadium extraction, add reductive agent and binding agent and above-mentioned material is pressed into pelletizing;
The above-mentioned pelletizing of roasting;
The magnetization pelletizing that obtains after roasting is broken and carry out magnetic separation, obtain rich iron charge and mine tailing;
Mine tailing obtains vanadium product and manganese product by acidleach, filtration, precipitation and electrolysis.
2. the treatment process of tailings in vanadium extraction according to claim 1, it is characterized in that reductive agent is coal dust, granularity below 100 orders, fixed carbon content 70%～75%, in the gross weight of tailings in vanadium extraction, reductive agent and binding agent, the addition of reductive agent is 8%～12%.
3. the treatment process of tailings in vanadium extraction according to claim 1, is characterized in that binding agent is organic binder bond, and in the gross weight of tailings in vanadium extraction, reductive agent and binding agent, the addition of binding agent is 3～4%.
4. the treatment process of tailings in vanadium extraction according to claim 3, is characterized in that described organic binder bond is polyose.
5. the treatment process of tailings in vanadium extraction according to claim 1, it is characterized in that in the process of roasting tailings in vanadium extraction, reductive agent and binding agent, pelletizing is reduced to processing by rotary hearth furnace, and reduction temperature is 800 ℃～1000 ℃, and roasting time is 0.5～1.5h.
6. the treatment process of tailings in vanadium extraction according to claim 1, it is characterized in that the magnetization pelletizing obtaining after roasting cooling and broken, below grinding to 250 order, pass through two stages of magnetic separation, first paragraph magneticstrength is 0.5T, second segment magneticstrength is 0.2T, and the Magnetic Materials finally obtaining is rich iron charge.
7. the treatment process of tailings in vanadium extraction according to claim 1, is characterized in that mine tailing to carry out acidleach processing, and temperature is 100～120 ℃, makes vanadium, manganese in tailings in vanadium extraction enter solution, then by filtering, obtains being rich in the solution of vanadium, manganese.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726715A (en) * | 2015-03-31 | 2015-06-24 | 河北钢铁股份有限公司承德分公司 | Recycling method for vanadium-chromium waste residues |
| CN106756121A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | The method and system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction |
| CN106756120A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | Process the method and system of vanadium-bearing slag of high calcium and high phosphor |
| CN106756070A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | Process the method and system of vanadium-bearing slag of high calcium and high phosphor |
| CN106756119A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | The method and system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction |
| CN106978545A (en) * | 2017-03-24 | 2017-07-25 | 江苏省冶金设计院有限公司 | The method and system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction |
| CN108034807A (en) * | 2017-12-08 | 2018-05-15 | 湖南三丰钒业有限公司 | A kind of transforming agent and its application method for being used for the vanadium extraction from vanadium raw ore |
| CN112095024A (en) * | 2020-08-12 | 2020-12-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Vanadium extraction method of sodium-modified vanadium extraction tailings |
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| CN1236816A (en) * | 1999-04-30 | 1999-12-01 | 中南工业大学 | Technology for comprehensive utilization of V-Ti magnetite |
| CN101280361A (en) * | 2008-05-13 | 2008-10-08 | 陈健 | Process method of tailings in vanadium extraction |
| CN101418370A (en) * | 2008-11-21 | 2009-04-29 | 长沙市岳麓区东新科技开发有限公司 | Novel industrialization method for comprehensive utilization of vanadium ferrotitanium ore concentrate |
| CN102352423A (en) * | 2011-10-20 | 2012-02-15 | 攀枝花慧泰金属新材料有限公司 | Method for selecting and smelting titanium from vanadium titanomagnetite at low temperature |
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2013
- 2013-12-09 CN CN201310662640.4A patent/CN103643045A/en active Pending
Patent Citations (4)
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| CN1236816A (en) * | 1999-04-30 | 1999-12-01 | 中南工业大学 | Technology for comprehensive utilization of V-Ti magnetite |
| CN101280361A (en) * | 2008-05-13 | 2008-10-08 | 陈健 | Process method of tailings in vanadium extraction |
| CN101418370A (en) * | 2008-11-21 | 2009-04-29 | 长沙市岳麓区东新科技开发有限公司 | Novel industrialization method for comprehensive utilization of vanadium ferrotitanium ore concentrate |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726715A (en) * | 2015-03-31 | 2015-06-24 | 河北钢铁股份有限公司承德分公司 | Recycling method for vanadium-chromium waste residues |
| CN106756121A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | The method and system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction |
| CN106756120A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | Process the method and system of vanadium-bearing slag of high calcium and high phosphor |
| CN106756070A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | Process the method and system of vanadium-bearing slag of high calcium and high phosphor |
| CN106756119A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | The method and system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction |
| CN106978545A (en) * | 2017-03-24 | 2017-07-25 | 江苏省冶金设计院有限公司 | The method and system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction |
| CN108034807A (en) * | 2017-12-08 | 2018-05-15 | 湖南三丰钒业有限公司 | A kind of transforming agent and its application method for being used for the vanadium extraction from vanadium raw ore |
| CN112095024A (en) * | 2020-08-12 | 2020-12-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Vanadium extraction method of sodium-modified vanadium extraction tailings |
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Application publication date: 20140319 |