CN110467186A - A method of extracting white carbon black from shale tailings in vanadium extraction - Google Patents

A method of extracting white carbon black from shale tailings in vanadium extraction Download PDF

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Publication number
CN110467186A
CN110467186A CN201910754891.2A CN201910754891A CN110467186A CN 110467186 A CN110467186 A CN 110467186A CN 201910754891 A CN201910754891 A CN 201910754891A CN 110467186 A CN110467186 A CN 110467186A
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China
Prior art keywords
tailings
vanadium extraction
carbon black
white carbon
solid
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CN201910754891.2A
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Chinese (zh)
Inventor
包申旭
王顺
张一敏
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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Priority to CN201910754891.2A priority Critical patent/CN110467186A/en
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/113Silicon oxides; Hydrates thereof
    • C01B33/12Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/113Silicon oxides; Hydrates thereof
    • C01B33/12Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/146After-treatment of sols
    • C01B33/148Concentration; Drying; Dehydration; Stabilisation; Purification
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/01Particle morphology depicted by an image
    • C01P2004/03Particle morphology depicted by an image obtained by SEM
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/12Surface area
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/80Compositional purity

Abstract

The method that the present invention provides a kind of to extract white carbon black from shale tailings in vanadium extraction, comprising: (1) tailings in vanadium extraction and solid base, water are mixed to get slurry, the solid base and tailings in vanadium extraction mass ratio are 0.9~2:1, and solid-to-liquid ratio is 1:4~10;(2) resulting slurry is increased into temperature to 120 DEG C~180 DEG C, the control reaction time is 60~150min;(3) filtrate and filter residue are obtained by filtration after answering, adjusts filtrate pH value to 6~10, obtains Silica hydrogel;(4) drying of resulting Silica hydrogel is ground up to white carbon black;Silica leaching rate reaches as high as 95.2% in this method, and substantially reduces the reaction time, and in 60~150min, SiO is detected in product2Content reaches 92.8% or more, and the main content of product reaches professional standard.

Description

A method of extracting white carbon black from shale tailings in vanadium extraction
Technical field
The present invention relates to bone coal extraction and technical field of resource comprehensive utilization, in particular to one kind is from shale tailings in vanadium extraction The method for extracting white carbon black.
Background technique
White carbon black, that is, amorphous silicon di-oxide.Also known as hydrated SiO 2.Molecular formula is SiO2·nH2O.Be it is a kind of white, Nontoxic, unformed fine powder.With porosity, high dispersive, light, chemical stability is good, high temperature resistant, does not burn and electricity is exhausted Edge waits well excellent properties.White carbon black is mainly used as reinforcing agent and modifying agent in rubber industry, and reinforcing effect is better than carbon black Other reinforcing fillers in addition.The raw material of the industries such as white carbon black or plastics, papermaking, pesticide, coating, ink.It is white at present The manufacturing method of carbon black is divided into vapor phase method and the precipitation method, and it is good that vapor phase method prepares quality of white carbon black product, but its higher cost, to setting Standby more demanding, complex process;The country is mostly the precipitation method using the method for preparing white carbon black at present, and precipitated silica produces Quality is not so good as fume colloidal silica, but precipitated silica simple production process, operation are easy, and cost is also low.Therefore mesh Preceding most domestic is all using producing white carbon black using settling method.
Shale tailings in vanadium extraction is the tailings generated after extraction vanadium metal in vanadium shale, and the grade of vanadium is lower in vanadium shale, It is averagely every to produce 1t V using vanadium shale2O5Product will generate the tailings of 120~150t.The accumulation of a large amount of tailings not only accounts for With soil, burden is brought to the development of enterprise, under the conditions of naturally, the heavy metal ion in tailings is easy to run off into environment In, cause environmental pollution.If shale tailings in vanadium extraction can be prepared into white carbon black, the stockpiling problem of tailing not only can solve, Qualified product can be produced and bring additional benefit.
It is to utilize alkaline leaching by silicate mineral currently with the technique that silicate mineral prepares white carbon black as silicon source In silicon be changed into soluble silicate for example sodium metasilicate enrichment in the solution, white carbon black then is made by adjusting pH.But it is straight Connect that use its technique above vanadium shale tailings in vanadium extraction be inappropriate, because vanadium shale tailings in vanadium extraction is that shale process for extracting vanadium obtains Arrive, originally there is the presence of alkali leaching process in shale process for extracting vanadium, thus be easy the silicon of disengaging in front in technique just It is leached, remaining is all the silicon of the difficult leaching of comparison.Thus there are the production time is too long low with silica product leaching rate Problem.
Summary of the invention
It is an object of the invention to overcome the defect of the prior art, provides one kind and extract hard charcoal from shale tailings in vanadium extraction Black method, silica leaching rate reaches as high as 95.2% in this method, and substantially reduces the reaction time, 60~ In 150min, SiO is detected in product2Content reaches 92.8% or more, and the main content of product reaches HG/T3061-1999 industry Standard requirements.
The present invention is achieved:
The present invention provides a kind of method that white carbon black is extracted from shale tailings in vanadium extraction, and described method includes following steps:
Tailings in vanadium extraction and solid base, water are mixed to get slurry by step 1, and the solid base is with tailings in vanadium extraction mass ratio 0.9~2:1, solid-to-liquid ratio are 1:4~10;
The resulting slurry of step 1 is increased temperature to 120 DEG C~180 DEG C by step 2, and the control reaction time is 60~ 150min;
Filtrate and filter residue is obtained by filtration in step 3 after reaction, adjusts filtrate pH value to 6~10, obtains Silica hydrogel;
Step 4 grinds the resulting Silica hydrogel drying of step 3 up to white carbon black.
The invention has the following advantages:
A kind of method for extracting white carbon black from shale tailings in vanadium extraction provided by the invention has tailings utilization rate high, green Colour circle guarantor, efficient and energy saving feature;Reach professional standard with white carbon black prepared by this method, specifically:
(1) when substantially increasing leaching rate (silica leaching rate reaches as high as 95.2%) and substantially reducing reaction Between (60~150min in), increase the consumption of shale tailings in vanadium extraction and reduce energy consumption.
(2) it had both effectively solved the problems, such as the stockpiling of shale tailings in vanadium extraction, and had also widened the raw material sources for preparing white carbon black.
(3) SiO is detected in product2Content reaches 92.8% or more, and the main content of product reaches HG/T3061-1999 industry mark Alignment request.Specific surface area has reached 105m2/g。
Detailed description of the invention
Fig. 1 is the white carbon black that is prepared of embodiment 1 1500 × under scanning electron microscope (SEM) photograph;
Fig. 2 is the white carbon black that is prepared of embodiment 1 4000 × under scanning electron microscope (SEM) photograph.
Specific embodiment
Embodiment 1
A method of extracting white carbon black from shale tailings in vanadium extraction, described method includes following steps:
Tailings in vanadium extraction and solid base, water are mixed to get slurry by step 1, and the solid base is with tailings in vanadium extraction mass ratio 1.5:1, solid-to-liquid ratio 1:6;
The resulting slurry of step 1 is increased temperature to 160 DEG C by step 2, and the control reaction time is 120min;
Filtrate and filter residue is obtained by filtration in step 3 after reaction, adjusts filtrate pH value to 8, obtains Silica hydrogel;
Step 4 grinds the resulting Silica hydrogel drying of step 3 up to white carbon black.Silica leaching rate height is reachable 95.2%, specific surface area has reached 105m2/g.SiO is detected in product2Content reaches 92.8% or more, and the main content of product reaches HG/T3061-1999 Industry code requirements.
Embodiment 2- embodiment 5
Solid base described in embodiment 2- embodiment 5 and tailings in vanadium extraction mass ratio are respectively 0.9:1,1.2:1,1.8:1, 2:1, other conditions are the same as embodiment 1.
Embodiment 6- embodiment 8
Solid-to-liquid ratio described in embodiment 6- embodiment 8 is respectively 1:4,1:8,1:10, and other conditions are the same as embodiment 1.
Embodiment 9- embodiment 11
Reaction temperature described in embodiment 9- embodiment 11 is respectively 120 DEG C, 140 DEG C, 180 DEG C, and other conditions are same Embodiment 1.
Embodiment 12- embodiment 14
The reaction time is respectively 60min, 90min, 150min in embodiment 12- embodiment 14, and other conditions are the same as real Apply example 1.
Embodiment 15- embodiment 16
Filtrate pH value is respectively 6,10 in embodiment 15- embodiment 16, and other conditions are the same as embodiment 1.
Comparative example 1- comparative example 2
Solid base described in comparative example 1- comparative example 2 and tailings in vanadium extraction mass ratio are respectively 0.7:1,2.2:1, other conditions With embodiment 1.
Comparative example 3- comparative example 4
The solid-liquid ratio of comparative example 3-4 is respectively 1:2,1:12, and other conditions are the same as embodiment 1.
Comparative example 5- comparative example 6
The reaction temperature of comparative example 5-6 is respectively 100 DEG C, 200 DEG C, and other conditions are the same as embodiment 1.
Comparative example 7- comparative example 8
The reaction time of comparative example 7-8 is respectively 30min, 180min, and other conditions are the same as embodiment 1.
Comparative example 9- comparative example 10
The filtrate pH of comparative example 9-10 is respectively 5,12, and other conditions are the same as embodiment 1.
Experimental example 1
1, the SiO of difference Statistics Implementation example 1- embodiment 5 and comparative example 1- comparative example 22Leaching rate is as shown in table 1.
Table 1
As shown in Table 1, SiO2Leaching rate is in reduction trend as the increase of alkaline residue ratio is first in increase trend again, this may be Since alkaline residue is than increasing, the collision probability of reactant is improved, to improve SiO2Leaching rate;As alkaline residue is than further increasing Add, leaching rate tends to balance, and leaching rate, which increases, to be reduced, or even has small reduction trend;Therefore solid base and tailings in vanadium extraction matter Amount ratio is selected as 0.9~2:1;And the solid base and tailings in vanadium extraction mass ratio are best when being 1.5:1.
2, distinguish the SiO of Statistics Implementation example 1, embodiment 6-8 and comparative example 3-42Leaching rate, as shown in table 2.
Table 2
As shown in Table 2, in the case where other conditions are optimum condition, SiO when solid-to-liquid ratio is 1:4~102Leaching rate Preferably, it is best when and solid-to-liquid ratio is 1:6.
3, distinguish the SiO of Statistics Implementation example 1, embodiment 9-11 and comparative example 5-62Leaching rate, as shown in table 3.
Table 3
As shown in Table 3, as the temperature rises, the SiO at 160 DEG C2Leaching rate reaches maximum value, comprehensively considers temperature and is 120 DEG C~180 DEG C preferably, and 160 DEG C of temperature are best.SiO at 200 DEG C2Though the high white carbon black quality still obtained of leaching rate It is slightly worse, therefore do not select.
4, distinguish the SiO of Statistics Implementation example 1, embodiment 13-14 and comparative example 7-82Leaching rate, as shown in table 4.
Table 4
As shown in Table 4, in the case where other conditions are optimum condition, the SiO when reaction time is 60~150min2Leaching Extracting rate is preferable, and best when 120min.
5, distinguish the SiO of Statistics Implementation example 1, embodiment 13-14 and comparative example 7-82Leaching rate, as shown in table 4.
Table 5
As shown in Table 5, SiO when adjusting filtrate pH value to 6~102Leaching rate is higher, this may be due to adjusting filtrate pH The generation of Silica hydrogel is more advantageous to when value is to 6~10.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (8)

1. a kind of method for extracting white carbon black from shale tailings in vanadium extraction, which is characterized in that described method includes following steps:
Tailings in vanadium extraction and solid base, water are mixed to get slurry by step 1, and the solid base and tailings in vanadium extraction mass ratio be 0.9~ 2:1, solid-to-liquid ratio are 1:4~10;
The resulting slurry of step 1 is increased temperature to 120 DEG C~180 DEG C by step 2, and the control reaction time is 60~150min;
Filtrate and filter residue is obtained by filtration in step 3 after reaction, adjusts filtrate pH value to 6~10, obtains Silica hydrogel;
Step 4 grinds the resulting Silica hydrogel drying of step 3 up to white carbon black.
2. the method as described in claim 1, which is characterized in that solid base is sodium hydroxide or hydroxide in the step 1 Potassium.
3. the method as described in claim 1, which is characterized in that water level tap water or distilled water in the step 1.
4. the method as described in claim 1, which is characterized in that solid base described in the step 1 and tailings in vanadium extraction mass ratio For 1.5:1.
5. the method as described in claim 1, which is characterized in that solid-to-liquid ratio is 1:6 in the step 1.
6. the method as described in claim 1, which is characterized in that reaction temperature is 180 DEG C in the step 2.
7. the method as described in claim 1, which is characterized in that the reaction time is 120min in the step 2.
8. the method as described in claim 1, which is characterized in that adjust filtrate pH value in the step 3 to 8.
CN201910754891.2A 2019-08-15 2019-08-15 A method of extracting white carbon black from shale tailings in vanadium extraction Pending CN110467186A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111719054A (en) * 2020-07-27 2020-09-29 东北大学 Oxidation, crystal breaking and roasting comprehensive utilization method of stone coal vanadium ore
CN112299427A (en) * 2020-10-29 2021-02-02 王庆乐 Extraction process of vanadium extraction tailings
WO2022022282A1 (en) * 2020-07-27 2022-02-03 东北大学 Stone coal vanadium ore oxidizing, crystal breaking, roasting, and vanadium extraction comprehensive utilization system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101037204A (en) * 2007-04-29 2007-09-19 东北大学 Method for preparing white carbon black by using oil shale ash
CN101830468A (en) * 2009-03-10 2010-09-15 湖南金大地材料股份有限公司 Process for extracting white carbon black in alkaline-leaching and vanadium extraction of stone coal
CN103539183A (en) * 2013-10-29 2014-01-29 广东石油化工学院 Acid method for preparing aluminum polychlorid and high-purity nanoscale white carbon black through ash of oil shale
CN103539128A (en) * 2013-10-29 2014-01-29 广东石油化工学院 Alkaline method for preparing nanometer white carbon black and aluminum polychlorid through ash of oil shale

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101037204A (en) * 2007-04-29 2007-09-19 东北大学 Method for preparing white carbon black by using oil shale ash
CN101830468A (en) * 2009-03-10 2010-09-15 湖南金大地材料股份有限公司 Process for extracting white carbon black in alkaline-leaching and vanadium extraction of stone coal
CN103539183A (en) * 2013-10-29 2014-01-29 广东石油化工学院 Acid method for preparing aluminum polychlorid and high-purity nanoscale white carbon black through ash of oil shale
CN103539128A (en) * 2013-10-29 2014-01-29 广东石油化工学院 Alkaline method for preparing nanometer white carbon black and aluminum polychlorid through ash of oil shale

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111719054A (en) * 2020-07-27 2020-09-29 东北大学 Oxidation, crystal breaking and roasting comprehensive utilization method of stone coal vanadium ore
CN111719054B (en) * 2020-07-27 2021-08-31 东北大学 Oxidation, crystal breaking and roasting comprehensive utilization method of stone coal vanadium ore
WO2022022282A1 (en) * 2020-07-27 2022-02-03 东北大学 Stone coal vanadium ore oxidizing, crystal breaking, roasting, and vanadium extraction comprehensive utilization system
CN112299427A (en) * 2020-10-29 2021-02-02 王庆乐 Extraction process of vanadium extraction tailings

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Application publication date: 20191119