CN104711437A - Environmentally friendly one-time stone coal roasting and vanadium acid-leaching method - Google Patents
Environmentally friendly one-time stone coal roasting and vanadium acid-leaching method Download PDFInfo
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- CN104711437A CN104711437A CN201310684205.1A CN201310684205A CN104711437A CN 104711437 A CN104711437 A CN 104711437A CN 201310684205 A CN201310684205 A CN 201310684205A CN 104711437 A CN104711437 A CN 104711437A
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Abstract
The invention discloses an environmentally friendly stone coal roasting and vanadium acid-leaching method which comprises the following steps: (1) crushing: stone coal with its calorific value being more than 3500 kilojoules per kg is crushed; (2) roasting; (3) leaching: the roasted mixture undergoes leaching by the use of sulfuric acid; and (4) separation: solid-liquid separation is carried out on the mixed liquor and vanadium is extracted from a leachate. The technological process is concise; the effect of oxidizing low valent vanadium in stone coal into high valent vanadium can be realized by one-time fluidized bed roasting; traditional two roasting processes of one-time decarbonization and one-time oxidizing roasting are not required as well as the phase of roasting stone coal after balling in a horizontal kiln, a shaft kiln and a tunnel kiln; production process is effectively shortened; leaching efficiency is high and leaching recovery rate of vanadium in inferior stone coal can reach more than 73%; and flue dust can be orderly discharged by a fluidized bed furnace such that the technology is clean and environmentally friendly. In addition, the method provided by the invention is simple to operate and easy to control and can be widely popularized and applied in the industrial production.
Description
Technical field
The invention belongs to ore dressing field, be specifically related to a kind of method of environmental protection bakes to burn the article bone coal Acid leaching vanadium.
Background technology
Bone coal is widely distributed in China southern, except containing except carbon in bone coal, also containing a certain amount of vanadium and other valuable elements.According to statistics, the content of vanadium in China's bone coal is about 7 times of content of vanadium in China's vanadium titano-magnetite, is a kind of abundant containing vanadium resource.The technical study that China extracts vanadium from bone coal from eighties of last century seventies, mainly take flat kiln roasting water logging technology, the extraction yield of vanadium is about 50%, and traditional flat kiln roasting belongs to interim operation, there is roasting discontinuous, the shortcoming that workman's workload is large.
Due to the shortcoming of flat kiln roasting bone coal, some enterprise also adopts shaft furnace, tunnel furnace roasting bone coal at present, but all exists and need bone coal to pulverize aftershaping roasting, broken leaching again, cause technical process to extend, the heat simultaneously in bone coal can not get sufficient comprehensive utilization, causes the waste of the energy
Summary of the invention
For above-mentioned deficiency, the object of the invention is, provide a kind of technical process succinct, be easy to realize, and the method for the high environmental protection bakes to burn the article bone coal Acid leaching vanadium of the extraction yield of vanadium.
For achieving the above object, technical scheme provided by the present invention is:
A method for environmental protection bakes to burn the article bone coal Acid leaching vanadium, it comprises the following steps:
(1) broken: the bone coal of every kilogram of calorific value more than 3500 kilojoules is pulverized;
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, collects thin dirt and the slag of calcination fume cooling formation, by thin dirt and slag mixing, and acquisition mixture;
(3) leach: mixture is adopted sulfuric acid leaching, obtain mixed solution;
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.
As a modification of the present invention, described step (1) is specifically further comprising the steps of: bone coal to be crushed under 60 mesh sieves more than 80%.
As a modification of the present invention, described step (2) specifically comprises the following steps:
(2.1) bone coal after pulverizing is moved into fluidizing furnace and carry out roasting, maturing temperature controls at 780 ~ 1050 DEG C, and furnace bottom blast controls at 3000 ~ 6000pa;
(2.2) calcination fume is through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace;
(2.3) by thin dirt and slag mixing, mixture is obtained.
As a modification of the present invention, described step (3) specifically comprises the following steps: mixture is adopted mass concentration be 20 ~ 35% sulfuric acid leaching, wherein liquid-solid ratio adopt 1 ~ 1.5:1, extraction temperature 80 ~ 95 DEG C, extraction time 2 ~ 8 hours.
As a modification of the present invention, described liquid-solid ratio adopts 1.5:1.
As a modification of the present invention, described step (4) specifically comprises the following steps:
(4.1) pH of leaching solution is modulated to 2 ~ 2.5;
(4.2) be organic phase with 14 ~ 16% di (isooctyl) phosphates, 4 ~ 6% tributyl phosphates and 78 ~ 82% aviation kerosenes or sulfonated kerosene, aforementioned proportion is volume percent, and compare by volume, organic phase: aqueous phase=1:1.5, extraction obtains the organic phase containing vanadium;
(4.3) by mass concentration be the sulphuric acid soln of 20 ~ 35% as reverse-extraction agent back extraction organic phase, the volume ratio of organic phase and aqueous phase is 10-15:1, obtain containing vanadium 30g/L-40g/L containing vanadium solution;
(4.4) modulate pH value to 0.5 with ammoniacal liquor, at 95 DEG C, precipitate 1 hour, obtain ammonium poly-vanadate, ammonium poly-vanadate pyrolysis obtains Vanadium Pentoxide in FLAKES.
As a modification of the present invention, described step (4.2) 15% di (isooctyl) phosphate, 5% tributyl phosphate and 80% aviation kerosene or sulfonated kerosene are organic phase, aforementioned proportion is volume percent, and compare by volume, organic phase: aqueous phase=1:1.5, extraction obtains the organic phase containing vanadium.
Beneficial effect of the present invention is: technical process of the present invention is succinct, fluidized bed roasting just Low Valent Vanadium that can realize in bone coal is oxidized to the effect of high price, do not need the double roasting process peace kiln of a traditional decarburization and once oxidation roasting, shaft kiln, tunnel furnace needs the stage of roasting after bone coal balling-up, effectively shorten Production Flow Chart, and leaching yield is high, in bone coal inferior, the leaching rate of recovery of vanadium can reach more than 73%, adopt fluidizing furnace that flue dust can be made to be discharged in order in addition, meet clean environment firendly technique, and it is simple to operate, easy to control, be beneficial to wide popularization and application in industrial production.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is mineral processing circuit figure of the present invention.
Embodiment
See Fig. 1, the method for a kind of environmental protection bakes to burn the article bone coal Acid leaching vanadium that the present embodiment provides, it comprises the following steps:
(1) broken: the bone coal of every kilogram of calorific value more than 3500 kilojoules is pulverized; Preferably, bone coal to be crushed under 60 mesh sieves more than 80%.
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, collects thin dirt and the slag of calcination fume cooling formation, by thin dirt and slag mixing, and acquisition mixture; Preferably, described step (2) specifically comprises the following steps: the bone coal after pulverizing is moved into fluidizing furnace and carries out roasting by (2.1), and maturing temperature controls at 780 ~ 1050 DEG C, and furnace bottom blast controls at 3000 ~ 6000pa; (2.2) calcination fume is through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace; (2.3) by thin dirt and slag mixing, mixture is obtained.
(3) leach: mixture is adopted sulfuric acid leaching, obtain mixed solution; Described step (3) specifically comprises the following steps: mixture is adopted mass concentration be 20 ~ 35% sulfuric acid leaching, wherein liquid-solid ratio adopt 1 ~ 1.5:1, extraction temperature 80 ~ 95 DEG C, extraction time 2 ~ 8 hours.Described liquid-solid ratio preferably adopts 1.5:1.
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.Preferably, described step (4) specifically comprises the following steps: pH of leaching solution is modulated to 2 ~ 2.5 by (4.1); (4.2) be organic phase with 14 ~ 16% di (isooctyl) phosphates, 4 ~ 6% tributyl phosphates and 78 ~ 82% aviation kerosenes or sulfonated kerosene, aforementioned proportion is volume percent, and compare by volume, organic phase: aqueous phase=1:1.5, extraction obtains the organic phase containing vanadium; (4.3) by mass concentration be the sulphuric acid soln of 20 ~ 35% as reverse-extraction agent back extraction organic phase, the volume ratio of organic phase and aqueous phase is 10-15:1, obtain containing vanadium 30g/L-40g/L containing vanadium solution; (4.4) modulate pH value to 0.5 with ammoniacal liquor, at 95 DEG C, precipitate 1 hour, obtain ammonium poly-vanadate, ammonium poly-vanadate pyrolysis obtains Vanadium Pentoxide in FLAKES.Preferred in wherein said step (4.2) is organic phase with 15% di (isooctyl) phosphate, 5% tributyl phosphate and 80% aviation kerosene or sulfonated kerosene, aforementioned proportion is volume percent, and compare by volume, organic phase: aqueous phase=1:1.5, extraction obtains the organic phase containing vanadium.
In specific implementation process, see following examples.
Embodiment 1:
(1) broken: to prepare the bone coal of 2 tons of every kilogram of calorific values more than 3500 kilojoules, bone coal is pulverized; Pulverizing size-grade distribution after ball milling is 60 mesh sieves account for 0.7%, 60-120 order to account for 7.2%, 120-200 order and account for 44.3%, accounts for 47.7%, wherein water ratio 0.7% under 200 mesh sieves, containing vanadium 0.98%, and carbon containing 10.15%.
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, and maturing temperature controls at 860 ~ 890 DEG C, and furnace bottom blast controls at 4600pa; Calcination fume, through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace; By thin dirt and slag mixing, obtain the mixture of grade 1.08%.
(3) leach: mixture is adopted mass concentration be 28% sulfuric acid leaching, wherein liquid-solid ratio adopt 1.5:1, extraction temperature 95 DEG C, extraction time 4 hours.
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.The leaching yield obtaining vanadium is 85.7%.
Embodiment 2:
(1) broken: to prepare the bone coal of 2 tons of every kilogram of calorific values more than 3500 kilojoules, bone coal is pulverized; Pulverizing size-grade distribution after ball milling is that 0.7%, the 60-120 order that accounts on 60 mesh sieves accounts for 7.2%, 120-200 order and accounts for 44.3%, accounts for 47.7%, wherein water ratio 0.7% under 200 mesh sieves, containing vanadium 0.98%, and carbon containing 10.15%.
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, and maturing temperature controls at 890 ~ 920 DEG C, and furnace bottom blast controls at 4300pa; Calcination fume, through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace; By thin dirt and slag mixing, obtain the mixture of grade 0.97%.
(3) leach: mixture is adopted mass concentration be 35% sulfuric acid leaching, wherein liquid-solid ratio adopt 1.5:1, extraction temperature 95 DEG C, extraction time 6 hours.
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.The leaching yield obtaining vanadium is 87.8%.
Embodiment 3:
(1) broken: to prepare the bone coal of 2 tons of every kilogram of calorific values more than 3500 kilojoules, bone coal is pulverized; Pulverizing size-grade distribution after ball milling is 60 mesh sieves account for 0.7%, 60-120 order to account for 7.2%, 120-200 order and account for 44.3%, accounts for 47.7%, wherein water ratio 0.7% under 200 mesh sieves, containing vanadium 0.98%, and carbon containing 10.15%.
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, and maturing temperature controls at 920 ~ 950 DEG C, and furnace bottom blast controls at 5300pa; Calcination fume, through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace; By thin dirt and slag mixing, obtain the mixture of grade 1.04%.
(3) leach: mixture is adopted mass concentration be 25% sulfuric acid leaching, wherein liquid-solid ratio adopt 1.2:1, extraction temperature 95 DEG C, extraction time 2 hours.
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.The leaching yield obtaining vanadium is 86%.
Embodiment 4
(1) broken: to prepare the bone coal of 2 tons of every kilogram of calorific values more than 3500 kilojoules, bone coal is pulverized; Pulverizing size-grade distribution after ball milling is that 5.1%, the 60-120 order that accounts on 60 mesh sieves accounts for 16.7%, 120-200 order and accounts for 73%, accounts for 5.2%, wherein water ratio 1.6% under 200 mesh sieves, containing vanadium 0.78%, and carbon containing 10.31%.
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, and maturing temperature controls at 860 ~ 890 DEG C, and furnace bottom blast controls at 5000pa; Calcination fume, through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace; By thin dirt and slag mixing, obtain the mixture of grade 0.96%.
(3) leach: mixture is adopted mass concentration be 20% sulfuric acid leaching, wherein liquid-solid ratio adopt 1.5:1, extraction temperature 95 DEG C, extraction time 6 hours.
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.The leaching yield obtaining vanadium is 80%.
Embodiment 5
(1) broken: to prepare the bone coal of 2 tons of every kilogram of calorific values more than 3500 kilojoules, bone coal is pulverized; Pulverizing size-grade distribution after ball milling is that 5.1%, the 60-120 order that accounts on 60 mesh sieves accounts for 16.7%, 120-200 order and accounts for 73%, accounts for 5.2%, wherein water ratio 1.6% under 200 mesh sieves, containing vanadium 0.78%, and carbon containing 10.31%.
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, and maturing temperature controls at 950 ~ 980 DEG C, and furnace bottom blast controls at 5400pa; Calcination fume, through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace; By thin dirt and slag mixing, obtain the mixture of grade 0.89%.
(3) leach: mixture is adopted mass concentration be 22% sulfuric acid leaching, wherein liquid-solid ratio adopt 1.5:1, extraction temperature 95 DEG C, extraction time 2 hours.
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.The leaching yield obtaining vanadium is 75.2%.
Embodiment 6
(1) broken: to prepare the bone coal of 2 tons of every kilogram of calorific values more than 3500 kilojoules, bone coal is pulverized; Pulverizing size-grade distribution after ball milling is that 5.1%, the 60-120 order that accounts on 60 mesh sieves accounts for 16.7%, 120-200 order and accounts for 73%, accounts for 5.2%, wherein water ratio 1.6% under 200 mesh sieves, containing vanadium 0.78%, and carbon containing 10.31%.
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, and maturing temperature controls at 980 ~ 1050 DEG C, and furnace bottom blast controls at 5900pa; Calcination fume, through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace; By thin dirt and slag mixing, obtain the mixture of grade 0.96%.
(3) leach: mixture is adopted mass concentration be 20% sulfuric acid leaching, wherein liquid-solid ratio adopt 1:1, extraction temperature 95 DEG C, extraction time 2 hours.
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.The leaching yield obtaining vanadium is 80%.
Embodiment 7
(1) broken: to prepare the bone coal of 2 tons of every kilogram of calorific values more than 3500 kilojoules, bone coal is pulverized; Pulverizing size-grade distribution after ball milling is that 5.1%, the 60-120 order that accounts on 60 mesh sieves accounts for 16.7%, 120-200 order and accounts for 73%, accounts for 5.2%, wherein water ratio 1.6% under 200 mesh sieves, containing vanadium 0.78%, and carbon containing 10.31%.
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, and maturing temperature controls at 780 ~ 830 DEG C, and furnace bottom blast controls at 3000pa; Calcination fume, through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace; By thin dirt and slag mixing, obtain the mixture of grade 0.95%.
(3) leach: mixture is adopted mass concentration be 20% sulfuric acid leaching, wherein liquid-solid ratio adopt 1.5:1, extraction temperature 95 DEG C, extraction time 6 hours.
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.The leaching yield obtaining vanadium is 73%.
Embodiment 8
(1) broken: to prepare the bone coal of 2 tons of every kilogram of calorific values more than 3500 kilojoules, bone coal is pulverized; Pulverizing size-grade distribution after ball milling is that 11.7%, the 60-120 order that accounts on 60 mesh sieves accounts for 19.5%, 120-200 order and accounts for 56.3%, accounts for 12.5%, wherein water ratio 3.1% under 200 mesh sieves, containing vanadium 1.08%, and carbon containing 10.78%.
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, and maturing temperature controls at 920 ~ 950 DEG C, and furnace bottom blast controls at 5400pa; Calcination fume, through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace; By thin dirt and slag mixing, obtain the mixture of grade 1.12%.
(3) leach: mixture is adopted mass concentration be 20% sulfuric acid leaching, wherein liquid-solid ratio adopt 1:1, extraction temperature 85 DEG C, extraction time 4 hours.
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.The leaching yield obtaining vanadium is 74%.
Embodiment 9
(1) broken: to prepare the bone coal of 2 tons of every kilogram of calorific values more than 3500 kilojoules, bone coal is pulverized; Pulverizing size-grade distribution after ball milling is that 15%, the 60-120 order that accounts on 60 mesh sieves accounts for 22.5%, 120-200 order and accounts for 54.2%, accounts for 8.3%, wherein water ratio 3.7% under 200 mesh sieves, containing vanadium 0.94%, and carbon containing 10.51.
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, and maturing temperature controls at 950 ~ 980 DEG C, and furnace bottom blast controls at 6000pa; Calcination fume, through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace; By thin dirt and slag mixing, obtain the mixture of grade 1.24%.
(3) leach: mixture is adopted mass concentration be 20% sulfuric acid leaching, wherein liquid-solid ratio adopt 1:1, extraction temperature 85 DEG C, extraction time 4 hours.
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.The leaching yield obtaining vanadium is 73%.
Above-described embodiment is only the good embodiment of the present invention, and the present invention can not enumerate out whole embodiments, the technical scheme of one of all employing above-described embodiments, or according to the equivalent variations that above-described embodiment does, all in scope.
From above-mentioned, technical process of the present invention is succinct, and effectively shorten Production Flow Chart, and leaching yield is high, the leaching rate of recovery of vanadium can reach more than 73%, specifically has following advantage:
1) the present invention is for the Rock coal containing alum of carbon content more than 10%, effectively can utilize the carbon content in bone coal, avoid and first decarburization is needed for the bone coal that carbon content is high, reoxidize the re-baking technique of roasting, avoid the energy consumption in secondary oxidation roasting process, accomplish effective utilization of the energy in bone coal.
2) the present invention utilize fluidizing furnace bakes to burn the article just the Low Valent Vanadium that can realize in bone coal be oxidized to high price effect, do not need the double roasting process of a traditional decarburization and once oxidation roasting peace kiln, stage that shaft kiln, tunnel furnace need roasting after bone coal balling-up, shorten Production Flow Chart.
3) maturing temperature of the present invention is 780 ~ 1050 DEG C, and oven temperature ranges is wide, easy to control;
4) the invention solves the smoke contamination problem of flat kiln and shaft kiln, adopt fluidizing furnace that flue dust can be made to be discharged in order, meet clean environment firendly technique.
5) leaching yield of the present invention is high, and the leaching rate of recovery of vanadium can reach more than 73%.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned embodiment and revise.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this specification sheets, these terms just for convenience of description; any restriction is not formed to the present invention; as described in the above embodiment the present invention, step same or similar with it is adopted and other method obtained, all in scope.
Claims (7)
1. a method for environmental protection bakes to burn the article bone coal Acid leaching vanadium, it is characterized in that, it comprises the following steps:
(1) broken: the bone coal of every kilogram of calorific value more than 3500 kilojoules is pulverized;
(2) roasting: the bone coal immigration fluidizing furnace after pulverizing is carried out roasting, collects thin dirt and the slag of calcination fume cooling formation, by thin dirt and slag mixing, and acquisition mixture;
(3) leach: mixture is adopted sulfuric acid leaching, obtain mixed solution;
(4) be separated: solid-liquid separation is carried out to mixed solution, from leach liquor, extracts vanadium.
2. the method for environmental protection bakes to burn the article bone coal Acid leaching vanadium according to claim 1, it is characterized in that, described step (1) is specifically further comprising the steps of: bone coal to be crushed under 60 mesh sieves more than 80%.
3. the method for environmental protection bakes to burn the article bone coal Acid leaching vanadium according to claim 1, it is characterized in that, described step (2) specifically comprises the following steps:
(2.1) bone coal after pulverizing is moved into fluidizing furnace and carry out roasting, maturing temperature controls at 780 ~ 1050 DEG C, and furnace bottom blast controls at 3000 ~ 6000pa;
(2.2) calcination fume is through water-cooled cooling, adopts that settling pocket gathers dust, cyclone dust collection and bag collection mode are gathered dust, the slag obtaining thin dirt and flow out from the overflow port of fluidizing furnace;
(2.3) by thin dirt and slag mixing, mixture is obtained.
4. the method for environmental protection bakes to burn the article bone coal Acid leaching vanadium according to claim 1, it is characterized in that, described step (3) specifically comprises the following steps: mixture is adopted mass concentration be 20 ~ 35% sulfuric acid leaching, wherein liquid-solid ratio adopts 1 ~ 1.5:1, extraction temperature 80 ~ 95 DEG C, extraction time 2 ~ 8 hours.
5. the method for environmental protection bakes to burn the article bone coal Acid leaching vanadium according to claim 4, is characterized in that, described liquid-solid ratio adopts 1.5:1.
6. the method for environmental protection bakes to burn the article bone coal Acid leaching vanadium according to claim 1, it is characterized in that, described step (4) specifically comprises the following steps:
(4.1) pH of leaching solution is modulated to 2 ~ 2.5;
(4.2) be organic phase with 14 ~ 16% di (isooctyl) phosphates, 4 ~ 6% tributyl phosphates and 78 ~ 82% aviation kerosenes or sulfonated kerosene, aforementioned proportion is volume percent, and compare by volume, organic phase: aqueous phase=1:1.5, extraction obtains the organic phase containing vanadium;
(4.3) by mass concentration be the sulphuric acid soln of 20 ~ 35% as reverse-extraction agent back extraction organic phase, the volume ratio of organic phase and aqueous phase is 10-15:1, obtain containing vanadium 30g/L-40g/L containing vanadium solution;
(4.4) modulate pH value to 0.5 with ammoniacal liquor, at 95 DEG C, precipitate 1 hour, obtain ammonium poly-vanadate, ammonium poly-vanadate pyrolysis obtains Vanadium Pentoxide in FLAKES.
7. the method for environmental protection bakes to burn the article bone coal Acid leaching vanadium according to claim 6, it is characterized in that, described step (4.2) 15% di (isooctyl) phosphate, 5% tributyl phosphate and 80% aviation kerosene or sulfonated kerosene are organic phase, aforementioned proportion is volume percent, and compare by volume, organic phase: aqueous phase=1:1.5, extraction obtains the organic phase containing vanadium.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282538A (en) * | 2016-09-21 | 2017-01-04 | 武汉科技大学 | A kind of method that bone coal one-step method prepares high purity vanadic anhydride |
| CN108149022A (en) * | 2018-02-07 | 2018-06-12 | 中国科学院过程工程研究所 | A kind of method of vanadium slag blank roasting ammonium vanadium extraction |
| CN111057878A (en) * | 2020-01-02 | 2020-04-24 | 长沙有色冶金设计研究院有限公司 | Ore dressing method for vanadium ore |
| CN113862484A (en) * | 2021-09-24 | 2021-12-31 | 武汉科技大学 | Method for efficiently extracting gallium from brown corundum smoke dust |
-
2013
- 2013-12-16 CN CN201310684205.1A patent/CN104711437A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282538A (en) * | 2016-09-21 | 2017-01-04 | 武汉科技大学 | A kind of method that bone coal one-step method prepares high purity vanadic anhydride |
| CN108149022A (en) * | 2018-02-07 | 2018-06-12 | 中国科学院过程工程研究所 | A kind of method of vanadium slag blank roasting ammonium vanadium extraction |
| CN111057878A (en) * | 2020-01-02 | 2020-04-24 | 长沙有色冶金设计研究院有限公司 | Ore dressing method for vanadium ore |
| CN113862484A (en) * | 2021-09-24 | 2021-12-31 | 武汉科技大学 | Method for efficiently extracting gallium from brown corundum smoke dust |
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Application publication date: 20150617 |