CN103952558B - Vanadium titano-magnetite tailings in vanadium extraction takes off the method for sodium - Google Patents
Vanadium titano-magnetite tailings in vanadium extraction takes off the method for sodium Download PDFInfo
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- CN103952558B CN103952558B CN201410121291.XA CN201410121291A CN103952558B CN 103952558 B CN103952558 B CN 103952558B CN 201410121291 A CN201410121291 A CN 201410121291A CN 103952558 B CN103952558 B CN 103952558B
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Abstract
The invention provides a kind of method that vanadium titano-magnetite tailings in vanadium extraction takes off sodium, comprising: in the acid solution of the setting concentration of set amount, add described tailings in vanadium extraction; Described acid solution and described tailings in vanadium extraction is made to react setting-up time at a set temperature, to remove the Na in described tailings in vanadium extraction
2o; Described tailings in vanadium extraction after separating reaction completes and described acid solution.Vanadium titano-magnetite tailings in vanadium extraction provided by the invention takes off the method for sodium, operate under normal pressure design temperature, not only easy handling and also security good, the efficient removal of sodium in vanadium titano-magnetite tailings in vanadium extraction can be realized, and with Na in the vanadium titano-magnetite tailings in vanadium extraction obtained after treatment
2the sodium content of O meter can remain on less than 0.2%, meet the requirement directly applying to blast furnace ironmaking, effectively prevent agglomerate reduction degradation, cause pellet abnormal expansion, destroy blast furnace lining, finally cause stock column breathe freely liquid permeability decline, the problem of gas fluid distrbution imbalance, effectively can improve ironmaking yield and the work-ing life of blast furnace.
Description
Technical field
The present invention relates to industrial tailings processing technology field, more specifically, relate to a kind of method that vanadium titano-magnetite tailings in vanadium extraction takes off sodium.
Background technology
Vanadium titano-magnetite is typical many metals associated metal Mineral resources altogether, the explored prospective reserves of China is more than 10,000,000,000 tons, retained reserve 67.3 hundred million tons, occupy third place in the world, and be the association altogether of many metals such as vanadium, titanium, iron, comprehensive utilization of resources is worth very high, and wherein titanium resource amount reaches 8.7 hundred million tons, vanadium resource amount reaches 1,579 ten thousand tons, account for respectively national titanium, vanadium reserves 90.5% and 62%.
Vanadium in vanadium titano-magnetite is that research has found that vanadium just obtains industrialized developing can significantly improve the mechanical property of steel in steel after in 20 beginnings of the century.In the R&D process of many decades, the vanadium titano-magnetite process for extracting vanadium formed mainly contains three kinds: the first is vanadium titano-magnetite sodium roasting-water logging process for extracting vanadium, the second is that v-bearing titanomagnetite smelting-vanadium extraction from hot metal-vanadium slag produces vanadium oxide technique, and the third is molten point of the non-blast-furnace smelting-electric furnace of vanadium titano-magnetite-molten point slag process for extracting vanadium still under test.Vanadium titano-magnetite sodium roasting-water logging process for extracting vanadium is applicable to the high (V of vanadiumcontent
2o
5content is greater than 1.0%) vanadium titano-magnetite, in Finland, South Africa etc., state is widely applied, but domestic vanadium titano-magnetite V
2o
5content is low, SiO
2content is relatively high, not yet obtains Industry Promotion at home.
The tailings in vanadium extraction iron content obtained after adopting vanadium titano-magnetite sodium roasting-water logging process for extracting vanadium vanadium extraction is high, Fe
2o
3content, generally more than 60%, has utility value, but because tailings is containing the high (Na of sodium
2the mass percent of O is 0.7 ~ 5%), as directly returned blast furnace ironmaking, agglomerate reduction degradation can be aggravated, cause pellet abnormal expansion, destroy blast furnace lining, finally cause stock column breathe freely liquid permeability decline, gas fluid distrbution is lacked of proper care, and produces bring many disadvantageous effects to the long-service life high-efficiency of blast furnace.At present, tailings in vanadium extraction lacks effective method of comprehensive utilization, saves as master, not only land occupation to pile, and also causes the huge wasting of resources.
Therefore, to after vanadium titano-magnetite sodium roasting-water logging process for extracting vanadium produce tailings in vanadium extraction and carry out de-sodium, to meet the demand that it returns blast furnace ironmaking, for realizing tailings in vanadium extraction recycling, there is important resource value meaning and environment protection meaning.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.
For this reason, the invention provides a kind of method that vanadium titano-magnetite tailings in vanadium extraction takes off sodium, the method operates under low-temperature atmosphere-pressure, not only easy handling and also security good, the efficient removal of sodium in vanadium titano-magnetite tailings in vanadium extraction can be realized, and with Na in the vanadium titano-magnetite tailings in vanadium extraction obtained after treatment
2the mass percent of the sodium content of O meter is below 0.2%, blast furnace ironmaking can be directly applied to, effectively prevent agglomerate reduction degradation, cause pellet abnormal expansion, destroy blast furnace lining, finally cause stock column breathe freely liquid permeability decline, the problem of gas fluid distrbution imbalance, effectively improves ironmaking yield and the work-ing life of blast furnace.
The invention provides a kind of method that vanadium titano-magnetite tailings in vanadium extraction takes off sodium, Na in described tailings in vanadium extraction
2the mass percent of O is not less than 0.2%; Comprise:
Step 102, adds described tailings in vanadium extraction in the acid solution of the setting concentration of set amount;
Step 104, makes described acid solution and described tailings in vanadium extraction react setting-up time at a set temperature, to remove the Na in described tailings in vanadium extraction
2o;
Step 106, the described tailings in vanadium extraction after separating reaction completes and described acid solution.
Vanadium titano-magnetite tailings in vanadium extraction provided by the invention takes off the method for sodium, operate under normal pressure design temperature, not only easy handling and also security good, the efficient removal of sodium in vanadium titano-magnetite tailings in vanadium extraction can be realized, and with Na in the vanadium titano-magnetite tailings in vanadium extraction obtained after treatment
2the sodium content of O meter can remain on less than 0.2%, meet the requirement directly applying to blast furnace ironmaking, effectively prevent agglomerate reduction degradation, cause pellet abnormal expansion, destroy blast furnace lining, finally cause stock column breathe freely liquid permeability decline, the problem of gas fluid distrbution imbalance, effectively can improve ironmaking yield and the work-ing life of blast furnace, and achieve the recycling of tailings in vanadium extraction.
According to one embodiment of present invention, the method that described vanadium titano-magnetite tailings in vanadium extraction takes off sodium also comprises:
Step 108, washs the described tailings in vanadium extraction after being separated.
According to one embodiment of present invention, in described step 108, at 20 ~ 80 DEG C, water washing is carried out to the described tailings in vanadium extraction after separation.
According to one embodiment of present invention, in described step 108, the volume mass ratio carrying out described water and the described tailings in vanadium extraction washed is 0.5 ~ 2L:1kg.
According to one embodiment of present invention, in described step 102, the mass concentration of described acid solution is 0.2 ~ 2%.
According to one embodiment of present invention, in described step 102, described acid solution is 4 ~ 10L:1kg with the volume mass ratio of described tailings in vanadium extraction.
According to one embodiment of present invention, described acid solution is salpeter solution, hydrochloric acid soln or sulphuric acid soln.
According to one embodiment of present invention, in described step 104, described design temperature is 60 ~ 95 DEG C.
According to one embodiment of present invention, in described step 104, described setting-up time is 10 ~ 60min.
According to one embodiment of present invention, the tailings of described tailings in vanadium extraction for producing after described vanadium titano-magnetite employing sodium roasting-water logging process for extracting vanadium vanadium extraction.
In sum: vanadium titano-magnetite tailings in vanadium extraction provided by the invention takes off the method for sodium, operate under low-temperature atmosphere-pressure, not only easy handling and also security good, the efficient removal of sodium in vanadium titano-magnetite tailings in vanadium extraction can be realized, and with Na in the vanadium titano-magnetite tailings in vanadium extraction obtained after treatment
2the sodium content of O meter is below 0.2%, blast furnace ironmaking can be directly applied to, effectively prevent agglomerate reduction degradation, cause pellet abnormal expansion, destroy blast furnace lining, finally cause stock column breathe freely liquid permeability decline, the problems such as gas fluid distrbution imbalance, effectively improve ironmaking yield and the work-ing life of blast furnace, and achieve the recycling of tailings in vanadium extraction.
Additional aspect of the present invention and advantage become obvious by description part below, or are recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the schema that vanadium titano-magnetite tailings in vanadium extraction of the present invention takes off method one embodiment of sodium;
Fig. 2 is the schema that vanadium titano-magnetite tailings in vanadium extraction of the present invention takes off another embodiment of method of sodium.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from mode described here to implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Vanadium titano-magnetite tailings in vanadium extraction provided by the invention takes off the method for sodium, as shown in Figure 1, with Na
2the mass percent containing sodium amount that O counts in described tailings in vanadium extraction is not less than 0.2%; Comprise:
Step 102, adds described tailings in vanadium extraction in the acid solution of the setting concentration of set amount;
Step 104, makes described acid solution and described tailings in vanadium extraction react setting-up time at a set temperature, to remove the Na in described tailings in vanadium extraction
2o;
Step 106, the described tailings in vanadium extraction after separating reaction completes and described acid solution.
Vanadium titano-magnetite tailings in vanadium extraction provided by the invention takes off the method for sodium, for Na
2the tailings in vanadium extraction of mass percent more than 0.2% of the sodium content of O meter, operate under normal pressure design temperature, not only easy handling and also security good, the efficient removal of sodium in vanadium titano-magnetite tailings in vanadium extraction can be realized, meet the requirement directly applying to blast furnace ironmaking, effectively prevent agglomerate reduction degradation, cause pellet abnormal expansion, destroy blast furnace lining, finally cause stock column breathe freely liquid permeability decline, the problem of gas fluid distrbution imbalance, effectively can improve ironmaking yield and the work-ing life of blast furnace, and achieve the recycling of tailings in vanadium extraction.
Be noted that the sodium salt in vanadium titano-magnetite tailings in vanadium extraction and the material of other indissoluble water are mutually mixed into block existence, the application adopts the acid solution of certain concentration sodium salt (all or major part) reaction in the vanadium titano-magnetite tailings in vanadium extraction of bulk can be dissolved or directly be dissolved, and dissolves other materials on a small quantity and (can be understood as acid by outer Fe
2o
3react away, then inner Na
2cO
3in CO
3 2-final and Fe
3+combine, final still with Fe after being separated
2o
3form exists, but, Na wherein
+then removed by dissolving); Wherein, Na
2o comprises Na
2cO
3, NaOH, Na
2o etc., all use Na
2o carries out representing (as Na
2cO
3equivalence becomes Na
2o and CO
2), and not refer in particular to single Na
2o material.
Wherein, the tailings of described tailings in vanadium extraction for producing after described vanadium titano-magnetite employing sodium roasting-water logging process for extracting vanadium vanadium extraction.
In one embodiment of the present of invention, as shown in Figure 2, the method that described vanadium titano-magnetite tailings in vanadium extraction takes off sodium also comprises:
Step 108, washs the described tailings in vanadium extraction after being separated; Thus fully remove the content of the sodium in the tailings in vanadium extraction after being separated, the sodium in the tailings in vanadium extraction after separation is dissolved in washings to remove with washings.
Preferably, in described step 108, at 20 ~ 80 DEG C, water washing is carried out to the described tailings in vanadium extraction after separation, and the volume mass ratio carrying out described water and the described tailings in vanadium extraction washed is 0.5 ~ 2L:1kg; The most of Na in the tailings in vanadium extraction after separation is removed fast to realize using a small amount of water to carry out washing
+object.
In one embodiment of the present of invention, in described step 102, the described setting concentration (for mass concentration) of described acid solution is 0.2 ~ 2%; Described acid solution is 4 ~ 10L:1kg with the volume mass ratio of described tailings in vanadium extraction; Other materials (as: Fe in tailings in vanadium extraction after a large amount of removing then can be avoided to be separated
2o
3).
Preferably, described acid solution is salpeter solution, hydrochloric acid soln or sulphuric acid soln etc.
Wherein, in described step 104, described design temperature is 60 ~ 95 DEG C, and described setting-up time is 10 ~ 60min; In the temperature range of 60 ~ 95 DEG C, acid solution and tailings in vanadium extraction can rapid reactions, can shorten the time of reaction, effectively to improve except sodium efficiency.
The present invention reoffers the embodiment that a vanadium titano-magnetite tailings in vanadium extraction takes off the method for sodium, is specially:
Mixing: add tailings in vanadium extraction in acid solution, wherein, the concentration of acid solution be 0.2 ~ 2%(namely: the mass concentration of acid solution), acid solution is 4 ~ 10L:1kg with the volume mass ratio of tailings in vanadium extraction;
Reaction: make acid solution and tailings in vanadium extraction react 10 ~ 60min in 60 ~ 95 DEG C of temperature ranges;
Be separated: the tailings in vanadium extraction (for solid) after separating reaction completes and acid solution (now, in solution without H
+);
Washing: carry out water washing at 20 ~ 80 DEG C to the tailings in vanadium extraction (solid) after separation, the volume mass ratio carrying out water and the tailings in vanadium extraction washed is 0.5 ~ 2L:1kg.
Below in conjunction with the embodiment of concrete numerical value, to according to of the present invention, the method that vanadium titano-magnetite tailings in vanadium extraction carries out de-sodium is carried out furtherly, method of the present invention can be understood further, and can verify method of the present invention:
The invention provides the embodiment that vanadium titano-magnetite tailings in vanadium extraction takes off sodium is: by Na
2the quality of O and the mass percent of tailings in vanadium extraction be 3.0% tailings in vanadium extraction and concentration be 1.5% acid solution mixes, and the volume mass of acid solution and tailings in vanadium extraction is than being 7L:1kg, and makes the two at 80 DEG C of reaction 40min; Isolate tailings in vanadium extraction after question response completes, and adopt the water of 50 DEG C to wash isolated tailings in vanadium extraction, and the volume mass ratio carrying out water and the tailings in vanadium extraction washed is 1.5L:1kg; Na in tailings in vanadium extraction is recorded after washing completes
2the mass percent of O is that 0.17%(is less than 0.2%).
The invention provides another embodiment that vanadium titano-magnetite tailings in vanadium extraction takes off sodium is: by Na
2the quality of O and the mass percent of tailings in vanadium extraction be 5.0% tailings in vanadium extraction and concentration be 2% acid solution mixes, and the volume mass of acid solution and tailings in vanadium extraction is than being 10L:1kg, and makes the two at 95 DEG C of reaction 60min; Isolate tailings in vanadium extraction after question response completes, and adopt the water of 80 DEG C to wash isolated tailings in vanadium extraction, and the volume mass ratio carrying out water and the tailings in vanadium extraction washed is 2L:1kg; Na in tailings in vanadium extraction is recorded after washing completes
2the mass percent of O is that 0.18%(is less than 0.2%).
The invention provides the embodiment again that vanadium titano-magnetite tailings in vanadium extraction takes off sodium is: by Na
2the quality of O and the mass percent of tailings in vanadium extraction be 2.5% tailings in vanadium extraction and concentration be 0.2% acid solution mixes, and the volume mass of acid solution and tailings in vanadium extraction is than being 4L:1kg, and makes the two at 60 DEG C of reaction 10min; Isolate tailings in vanadium extraction after question response completes, and adopt the water of 20 DEG C to wash isolated tailings in vanadium extraction, and the volume mass ratio carrying out water and the tailings in vanadium extraction washed is 0.5L:1kg; Na in tailings in vanadium extraction is recorded after washing completes
2the mass percent of O is that 0.16%(is less than 0.2%).
Tailings in vanadium extraction after above-mentioned three embodiment process all can directly apply to blast furnace ironmaking, agglomerate reduction degradation can be avoided, cause pellet abnormal expansion, destroy blast furnace lining, finally cause stock column breathe freely liquid permeability decline, the problems such as gas fluid distrbution imbalance, ironmaking yield and the work-ing life of blast furnace can be improved, achieve the resource utilization profit of tailings in vanadium extraction, and the ferrous products excellent property of refining, and verify that method of the present invention is effective, goal of the invention of the present invention can be realized.
In sum: vanadium titano-magnetite tailings in vanadium extraction provided by the invention takes off the method for sodium, operate under low-temperature atmosphere-pressure, not only easy handling and also security good, the efficient removal of sodium in vanadium titano-magnetite tailings in vanadium extraction can be realized, and with Na in the vanadium titano-magnetite tailings in vanadium extraction obtained after treatment
2the sodium content of O meter is below 0.2%, blast furnace ironmaking can be directly applied to, effectively prevent agglomerate reduction degradation, cause pellet abnormal expansion, destroy blast furnace lining, finally cause stock column breathe freely liquid permeability decline, the problems such as gas fluid distrbution imbalance, effectively improve ironmaking yield and the work-ing life of blast furnace, and achieve the recycling of tailings in vanadium extraction.
In the description of this specification sheets, specific features, structure, material or feature that the description of term " embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. vanadium titano-magnetite tailings in vanadium extraction takes off a method for sodium, Na in described tailings in vanadium extraction
2the mass percent of O is not less than 0.2%; It is characterized in that, comprising:
Step 102, adds described tailings in vanadium extraction in the acid solution of the setting concentration of set amount;
Step 104, makes described acid solution and described tailings in vanadium extraction react setting-up time at a set temperature, to remove the Na in described tailings in vanadium extraction
2o;
Step 106, the described tailings in vanadium extraction after separating reaction completes and described acid solution;
Wherein, in described step 102, the mass concentration of described acid solution is 0.2 ~ 2%;
In described step 102, described acid solution is 4 ~ 10L:1kg with the volume mass ratio of described tailings in vanadium extraction;
In described step 104, described design temperature is 60 ~ 95 DEG C;
The tailings of described tailings in vanadium extraction for producing after described vanadium titano-magnetite employing sodium roasting-water logging process for extracting vanadium vanadium extraction.
2. vanadium titano-magnetite tailings in vanadium extraction according to claim 1 takes off the method for sodium, it is characterized in that, also comprises: step 108, washs the described tailings in vanadium extraction after being separated.
3. vanadium titano-magnetite tailings in vanadium extraction according to claim 2 takes off the method for sodium, it is characterized in that,
In described step 108, at 20 ~ 80 DEG C, water washing is carried out to the described tailings in vanadium extraction after separation.
4. vanadium titano-magnetite tailings in vanadium extraction according to claim 3 takes off the method for sodium, it is characterized in that,
In described step 108, the volume mass ratio carrying out described water and the described tailings in vanadium extraction washed is 0.5 ~ 2L:1kg.
5. vanadium titano-magnetite tailings in vanadium extraction according to any one of claim 1 to 4 takes off the method for sodium, it is characterized in that,
Described acid solution is salpeter solution, hydrochloric acid soln or sulphuric acid soln.
6. vanadium titano-magnetite tailings in vanadium extraction according to claim 5 takes off the method for sodium, it is characterized in that, in described step 104, described setting-up time is 10 ~ 60min.
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| CN105039714A (en) * | 2015-08-26 | 2015-11-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Processing method for sodium treatment vanadium and chromium extracting residues and method for extracting vanadium and chromium through sodium salt roasting of vanadium and chromium residues |
| CN107354303A (en) * | 2017-07-18 | 2017-11-17 | 东北大学 | A kind of water logging vanadium extraction waste removing sodium technology |
| CN109182734A (en) * | 2018-09-14 | 2019-01-11 | 北京中凯宏德科技有限公司 | A kind of diluted acid dump leaching vanadium titano-magnetite sodium roasting vanadium-extracting tailings method for removing sodium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227143A (en) * | 1991-09-26 | 1993-07-13 | Aluminum Company Of America | Process for the removal of salts from aluminum dross |
| CN103031443A (en) * | 2012-12-26 | 2013-04-10 | 贵州大学 | Method of dealkalizing red mud and recovering aluminum and iron |
-
2014
- 2014-03-28 CN CN201410121291.XA patent/CN103952558B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227143A (en) * | 1991-09-26 | 1993-07-13 | Aluminum Company Of America | Process for the removal of salts from aluminum dross |
| CN103031443A (en) * | 2012-12-26 | 2013-04-10 | 贵州大学 | Method of dealkalizing red mud and recovering aluminum and iron |
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