CN109467092A - The processing method of quartz sand tailing - Google Patents
The processing method of quartz sand tailing Download PDFInfo
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- CN109467092A CN109467092A CN201811398244.4A CN201811398244A CN109467092A CN 109467092 A CN109467092 A CN 109467092A CN 201811398244 A CN201811398244 A CN 201811398244A CN 109467092 A CN109467092 A CN 109467092A
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- China
- Prior art keywords
- quartz sand
- tailing
- sand tailing
- bipyridyls
- hydroxyacetic acid
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a kind of processing methods of quartz sand tailing, comprising the following steps: (1) preliminary crushed quartz sand tailings particles, and select the particle of 80~110 mesh；(2) 20~30g sodium oxide molybdena solid is added in tailing per ton, stirs evenly, calcines；(3) toward spraying water on calcined quartz sand tailing, quartz sand splits and washes away the impurity of tailing Surface Creation later；(4) quartz sand tailing is immersed in the hydroxyacetic acid solution containing 2,2 '-bipyridyls, quartz sand tailing filtration is come out；The mass percent of 2,2 '-bipyridyls is 2wt%~4wt% in pickling solution, and the mass percent of hydroxyacetic acid is 4wt%~8wt%, and the mass ratio of 2,2 '-bipyridyls and hydroxyacetic acid is 1: 2~2.2；(5) quartz sand tailing first is rinsed to get the processing refined product arrived to quartz sand tailing with weak alkaline aqueous solution.Dioxide-containing silica is up to 99.9% or more, ferric oxide content less than 22ppm in processed quartz sand tailing, has reached the standard of glass sand.
Description
Technical field
The present invention relates to big rice processing methods, more particularly to a kind of processing method of quartz sand tailing.
Background technique
Quartz sand have unique physics, chemical property so that its not only in casting, metallurgy, rubber, abrasive material, ceramics, build
It builds etc. to step in multiple traditional industries and have a wide range of applications, and in the high-new skill such as aerospace, IT, communication, solar battery
Art equally plays an irreplaceable role in field, is mainly used in the industries such as military project, space flight, optical fiber, chip, solar battery
In quartz sand be usually to require SiO2Content is higher than 99.9% glass sand.Quartz sand is a kind of hard, wear-resisting, chemical
The stable silicate mineral of property, main chemical compositions are SiO2。
The country prepares that glass sand is with high costs, and compared with glass sand product, there are more in quartz sand tailing
Bubble, and the constituent contents such as iron, aluminium, magnesium, calcium are higher, and they are mostly in stone in the form of oxide, feldspar, kaolinite, mica etc.
Inclusion enclave impurity is formed in sand and is difficult to remove.Tailing can be divided into different qualities etc. by quartz sand manufacturing enterprise under normal conditions
The quartz sand of grade is sold, and compared with glass sand, the added value of tailing quartz sand is low.To in being further purified of tailing,
Removing metal impurities therein becomes key, is configured to acid solution usually using strong acid such as hydrogen fluoride, hydrogen chloride, nitric acid or sulfuric acid
Quartz sand is impregnated to remove metal impurities, but high-concentration inorganic acid is washed and can generate heavy corrosion to production equipment, and pollutes
Environment, especially fluorine atom are difficult to degrade in the environment.It is necessary to study the processing methods of quartz sand tailing.
Summary of the invention
To make up for the shortcomings of the above existing technologies, the processing method that the present invention proposes a kind of quartz sand tailing.
Technical problem of the invention is resolved by technical solution below:
The processing method that the present invention proposes a kind of quartz sand tailing, comprising the following steps:
(1) preliminary crushed quartz sand tailings particles, and the particle of 80~110 mesh is selected, it washs and dry；
(2) 20~30g sodium oxide molybdena solid is added in tailing per ton, stirs evenly, calcines；Calcining uses temperature programming,
From initial temperature to 500 DEG C of 6~8 DEG C of heatings per minute, 3~5 DEG C of the heating per minute from 500 DEG C maintains 20~30 at 650 DEG C
Minute, it maintains 20~30 minutes at 1000 DEG C, is maintained 20~30 minutes at 1300 DEG C；
(3) toward spraying water on calcined quartz sand tailing, quartz sand splits and washes away the miscellaneous of tailing Surface Creation later
Then matter grinds calcined quartz sand tailing to 200~250 mesh；
(4) quartz sand tailing is immersed in the hydroxyacetic acid solution containing 2,2 '-bipyridyls, it will after stirring 3~4 hours
Quartz sand tailing filtration comes out；The mass percent of 2,2 '-bipyridyls is 2wt%~4wt% in pickling solution, hydroxyacetic acid
Mass percent is 4wt%~8wt%, and the mass ratio of 2,2 '-bipyridyls and hydroxyacetic acid is 1: 2~2.2；
(5) quartz sand tailing first is rinsed with weak alkaline aqueous solution, then uses deionized water scouring stone sand tailing again, done
It is dry to get to the processing refined product of quartz sand tailing.
Preferably, tailing is ground using wet grinding in step (3).
Preferably, pickling solution temperature is 60~80 DEG C in step (4), and solution ph is adjusted to 3~5.
Preferably, the pH value of step (5) described weak alkaline aqueous solution is 7.5~8, is prepared by sodium bicarbonate.
The beneficial effect of the present invention compared with the prior art includes:
The method of the present invention is simply suitable for industrial mass manufacture, and refining effect is significant, dioxy in processed quartz sand tailing
SiClx content is up to 99.9% or more, ferric oxide content less than 22ppm, has reached the standard of glass sand.
Specific embodiment
The following further describes the present invention in combination with preferred embodiments.
Embodiment 1
The processing method that the present embodiment proposes a kind of quartz sand tailing, comprising the following steps:
(1) preliminary crushed quartz sand tailings particles, and the particle of 80~110 mesh is selected, it washs and dry；
(2) 24g sodium oxide molybdena solid is added in tailing per ton, stirs evenly, calcines；Calcining uses temperature programming, from
For beginning temperature to 500 DEG C of 6~8 DEG C of heatings per minute, 3~5 DEG C of the heating per minute from 500 DEG C maintains 20~30 points at 650 DEG C
Clock maintains 20~30 minutes at 1000 DEG C, maintains 20~30 minutes at 1300 DEG C；
(3) toward spraying water on calcined quartz sand tailing, quartz sand splits and washes away the miscellaneous of tailing Surface Creation later
Then matter grinds calcined quartz sand tailing to 200~250 mesh；In the present embodiment, tailing is ground using wet grinding
It is milled broken；
(4) quartz sand tailing is immersed in the hydroxyacetic acid solution containing 2,2 '-bipyridyls, by stone after stirring 3 hours
Sand tailing filtration comes out；The mass percent of 2,2 '-bipyridyls is 4wt%, the quality percentage of hydroxyacetic acid in pickling solution
Counting is 4wt%~8wt%, and the mass ratio of 2,2 '-bipyridyls and hydroxyacetic acid is 1: 2.2；Wherein, pickling solution temperature is 80
DEG C, solution ph is adjusted to 3；
(5) quartz sand tailing first is rinsed with weak alkaline aqueous solution, then uses deionized water scouring stone sand tailing again, done
It is dry to get to the processing refined product of quartz sand tailing.Wherein, the pH value of weak alkaline aqueous solution is 8, is matched by sodium bicarbonate
System.SiO in quartz sand tailing after final purification2Content >=99.96%, ferric oxide content≤18ppm reach high-purity stone
The standard of sand.
Embodiment 2
The processing method that the present embodiment proposes a kind of quartz sand tailing, comprising the following steps:
(1) preliminary crushed quartz sand tailings particles, and the particle of 80~110 mesh is selected, it washs and dry；
(2) 30g sodium oxide molybdena solid is added in tailing per ton, stirs evenly, calcines；Calcining uses temperature programming, from
For beginning temperature to 500 DEG C of 6~8 DEG C of heatings per minute, 3~5 DEG C of the heating per minute from 500 DEG C maintains 20~30 points at 650 DEG C
Clock maintains 20~30 minutes at 1000 DEG C, maintains 20~30 minutes at 1300 DEG C；
(3) toward spraying water on calcined quartz sand tailing, quartz sand splits and washes away the miscellaneous of tailing Surface Creation later
Then matter grinds calcined quartz sand tailing to 200~250 mesh；In the present embodiment, tailing is ground using wet grinding
It is milled broken；
(4) quartz sand tailing is immersed in the hydroxyacetic acid solution containing 2,2 '-bipyridyls, by stone after stirring 3 hours
Sand tailing filtration comes out；The mass percent of 2,2 '-bipyridyls is 2wt%, the quality percentage of hydroxyacetic acid in pickling solution
Counting is 4wt%, and the mass ratio of 2,2 '-bipyridyls and hydroxyacetic acid is 1: 2.2；Wherein, pickling solution temperature is 70 DEG C, pH value of solution
Value is adjusted to 4；
(5) quartz sand tailing first is rinsed with weak alkaline aqueous solution, then uses deionized water scouring stone sand tailing again, done
It is dry to get to the processing refined product of quartz sand tailing.Wherein, the pH value of weak alkaline aqueous solution is 7.5, is matched by sodium bicarbonate
System.SiO in quartz sand tailing after final purification2Content >=99.99%, ferric oxide content≤10ppm reach high-purity stone
The standard of sand.
Embodiment 3
The processing method that the present embodiment proposes a kind of quartz sand tailing, comprising the following steps:
(1) preliminary crushed quartz sand tailings particles, and the particle of 80~110 mesh is selected, it washs and dry；
(2) 20g sodium oxide molybdena solid is added in tailing per ton, stirs evenly, calcines；Calcining uses temperature programming, from
For beginning temperature to 500 DEG C of 6~8 DEG C of heatings per minute, 3~5 DEG C of the heating per minute from 500 DEG C maintains 20~30 points at 650 DEG C
Clock maintains 20~30 minutes at 1000 DEG C, maintains 20~30 minutes at 1300 DEG C；
(3) toward spraying water on calcined quartz sand tailing, quartz sand splits and washes away the miscellaneous of tailing Surface Creation later
Then matter grinds calcined quartz sand tailing to 200~250 mesh；In the present embodiment, tailing is ground using wet grinding
It is milled broken；
(4) quartz sand tailing is immersed in the hydroxyacetic acid solution containing 2,2 '-bipyridyls, by stone after stirring 3 hours
Sand tailing filtration comes out；The mass percent of 2,2 '-bipyridyls is 2.6wt%, the quality hundred of hydroxyacetic acid in pickling solution
Score is 4wt%~8wt%, and the mass ratio of 2,2 '-bipyridyls and hydroxyacetic acid is 1: 2；Wherein, pickling solution temperature is 60
DEG C, solution ph is adjusted to 5；
(5) quartz sand tailing first is rinsed with weak alkaline aqueous solution, then uses deionized water scouring stone sand tailing again, done
It is dry to get to the processing refined product of quartz sand tailing.Wherein, the pH value of weak alkaline aqueous solution is 8, is matched by sodium bicarbonate
System.SiO in quartz sand tailing after final purification2Content >=99.98%, ferric oxide content≤22ppm reach high-purity stone
The standard of sand.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those skilled in the art to which the present invention belongs, it is not taking off
Under the premise of from present inventive concept, several equivalent substitute or obvious modifications can also be made, and performance or use is identical, all answered
When being considered as belonging to protection scope of the present invention.
Claims (4)
1. a kind of processing method of quartz sand tailing, which comprises the following steps:
(1) preliminary crushed quartz sand tailings particles, and the particle of 80~110 mesh is selected, it washs and dry；
(2) 20~30g sodium oxide molybdena solid is added in tailing per ton, stirs evenly, calcines；Calcining uses temperature programming, from
For beginning temperature to 500 DEG C of 6~8 DEG C of heatings per minute, 3~5 DEG C of the heating per minute from 500 DEG C maintains 20~30 points at 650 DEG C
Clock maintains 20~30 minutes at 1000 DEG C, maintains 20~30 minutes at 1300 DEG C；
(3) toward spraying water on calcined quartz sand tailing, quartz sand splits and washes away the impurity of tailing Surface Creation later, so
Calcined quartz sand tailing is ground to 200~250 mesh afterwards；
(4) quartz sand tailing is immersed in the hydroxyacetic acid solution containing 2,2 '-bipyridyls, it will be quartzy after stirring 3~4 hours
Sand tailing filtration comes out；The mass percent of 2,2 '-bipyridyls is 2wt%~4wt%, the quality of hydroxyacetic acid in pickling solution
Percentage is 4wt%~8wt%, and the mass ratio of 2,2 '-bipyridyls and hydroxyacetic acid is 1: 2~2.2；
(5) quartz sand tailing first is rinsed with weak alkaline aqueous solution, then uses deionized water scouring stone sand tailing again, it is dry, i.e.,
Obtain the processing refined product to quartz sand tailing.
2. the processing method of quartz sand tailing according to claim 1, which is characterized in that in step (3), using wet grinding
Tailing is ground.
3. the processing method of quartz sand tailing according to claim 1, which is characterized in that in step (4), pickling solution temperature
Degree is 60~80 DEG C, and solution ph is adjusted to 3~5.
4. the processing method of quartz sand tailing according to claim 1, which is characterized in that in step (5), the alkalescent
The pH value of aqueous solution is 7.5~8, is prepared by sodium bicarbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398244.4A CN109467092A (en) | 2018-11-22 | 2018-11-22 | The processing method of quartz sand tailing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811398244.4A CN109467092A (en) | 2018-11-22 | 2018-11-22 | The processing method of quartz sand tailing |
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| CN109467092A true CN109467092A (en) | 2019-03-15 |
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| CN201811398244.4A Pending CN109467092A (en) | 2018-11-22 | 2018-11-22 | The processing method of quartz sand tailing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114392835A (en) * | 2021-12-29 | 2022-04-26 | 江苏中腾石英材料科技股份有限公司 | Process for treating quartz sand tailings and recycling quartz sand tailings |
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2018
- 2018-11-22 CN CN201811398244.4A patent/CN109467092A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114392835A (en) * | 2021-12-29 | 2022-04-26 | 江苏中腾石英材料科技股份有限公司 | Process for treating quartz sand tailings and recycling quartz sand tailings |
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Application publication date: 20190315 |