CN107128936A - A kind of quartz sand purifying technique - Google Patents
A kind of quartz sand purifying technique Download PDFInfo
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- CN107128936A CN107128936A CN201710494217.6A CN201710494217A CN107128936A CN 107128936 A CN107128936 A CN 107128936A CN 201710494217 A CN201710494217 A CN 201710494217A CN 107128936 A CN107128936 A CN 107128936A
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- quartz sand
- acidleach
- desliming
- water
- purifying technique
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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
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
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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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- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
The invention provides a kind of quartz sand purifying technique, it is related to quartz sand purifying technical field；Including broken, desliming, acidleach and cleaning process, shattering process is used and crushed step by step, sieving, obtain 20 mesh quartz sands, desliming process sodium metasilicate, active carbon powder, the cleaning fluid soaking and washing of second alcohol and water composition, are then placed in acidleach in acid solution, acid solution is made up of oxalic acid, formic acid and citric acid, finally clean, obtain purifying quartz sand；The technique can effectively remove quartz sand surface film iron and internal impurity, obtain the high quartz sand of purity.
Description
Technical field
The present invention relates to quartz sand purifying technical field, and in particular to a kind of quartz sand purifying technique.
Background technology
Silica is the particularly important photoelectron material of a class, is widely used in semiconductor, optical-fibre communications, laser and boat
The high-technology field such as it, with developing rapidly for these fields, has more strict requirements to the Purification of quartz sand,
The high-purity silicon dioxide that current China needs partly depends on import, therefore, if obtaining high-purity silicon dioxide, meets high-new
The development of technical field, has great significance to promoting national economic development.
The purification for quartz sand removes iron at present, uses magnetic method, but magnetic separation can only remove magnetic mineral, such as red
Iron ore, limonite, biotite, ilmenite, pyrite etc., film iron or dip-dye iron for quartz sand particle surface are then incompetent
For power so that final quartz sand purity is unsatisfactory.
The content of the invention
(1) technical problem solved
In view of the shortcomings of the prior art, the invention provides a kind of quartz sand purifying technique so that quartz sand particle surface
Film iron or contaminate iron be leached, improve quartz sand purity.
(2) technical scheme
To realize object above, the present invention is achieved by the following technical programs：
A kind of quartz sand purifying technique, comprises the following steps：
(1) crush：Rough quartz sand is put into disintegrating machine and crushed, the quartz sand crossed on 10 mesh sieves, sieve continues broken
It is broken, 15 mesh sieves are crossed, then the quartz sand sieved twice are mixed, crushed, 20 mesh sieves are crossed；
(2) desliming：Quartz sand after step (1) is sieved soaks 20-30min with cleaning fluid, and desliming is rinsed with clear water；Institute
Stating cleaning fluid includes sodium metasilicate, active carbon powder, second alcohol and water, and its preparation method is：Heat the water to 55-60 DEG C, addition
The volume ratio of ethanol, water and ethanol is 3:2, sodium metasilicate, stirring are added after dissolving completely, it is ensured that the concentration of sodium metasilicate is 5-
8%, room temperature is reduced the temperature to, active carbon powder is added, the cleaning fluid is made；
(3) acidleach：Quartz sand after desliming is soaked in acid solution, oxalic acid, 0.8- of the acid solution by 10-15% concentration
The formic acid of 0.9% concentration and 0.4-0.5% citric acid composition；
(4) clean：Quartz sand after acidleach is cleaned with clear water, the quartz sand after finally being purified.
It is preferred that, rough quartz sand specification is 5 mesh in the step (1).
It is preferred that, disintegrating machine rotating speed is 700-800r/min in the step (1), and power is 12kW.
It is preferred that, the temperature of step (3) acidleach is 40-45 DEG C, and the time is 5-6h.
(3) beneficial effect
The invention provides a kind of quartz sand purifying technique, its advantage is：
(1) take multiple crushing process, the granularity of rough quartz sand reduced, the more surface areas of exposure, be conducive to by
Internal impurity is more thoroughly removed, and can accelerate shattering process using sieving step by step in shattering process；
(2) not take conventional clear water to clean in desliming process, but cleaned with self-control cleaning fluid, can not only remove stone
The greasy dirt on sand surface, dirty mud, and the film iron of quartz sand surface can be disintegrated in advance, very big collaboration is played to acid leaching process
Effect；
(3) impurity inside quartz sand and the film iron on surface are removed during acidleach, reaches the effect of purification, acid
Liquid based on strong acid, supplemented by weak acid, is conducive to impurity farthest to remove by the way of strong acid and weak acid collocation.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belongs to the scope of protection of the invention.
Embodiment 1：
A kind of quartz sand purifying technique, comprises the following steps：
(1) crush：Rough quartz sand is put into disintegrating machine and crushed, the quartz sand crossed on 10 mesh sieves, sieve continues broken
It is broken, 15 mesh sieves are crossed, then the quartz sand sieved twice are mixed, crushed, 20 mesh sieves are crossed；
(2) desliming：Quartz sand after step (1) is sieved soaks 20min with cleaning fluid, and desliming is rinsed with clear water；It is described
Cleaning fluid includes sodium metasilicate, active carbon powder, second alcohol and water, and its preparation method is：55 DEG C are heated the water to, ethanol is added,
The volume ratio of water and ethanol is 3:2, sodium metasilicate, stirring are added after dissolving completely, it is ensured that the concentration of sodium metasilicate is 5%, will
Temperature drops to room temperature, adds active carbon powder, and the cleaning fluid is made；
(3) acidleach：Quartz sand after desliming is soaked in acid solution, the acid solution by 14% concentration oxalic acid, 0.8% dense
The formic acid of degree and 0.4% citric acid composition；
(4) clean：Quartz sand after acidleach is cleaned with clear water, the quartz sand after finally being purified.
Rough quartz sand specification is 5 mesh in the step (1).
Disintegrating machine rotating speed is 750r/min in the step (1), and power is 12kW.
The temperature of step (3) acidleach is 40 DEG C, and the time is 5h.
Embodiment 2：
A kind of quartz sand purifying technique, comprises the following steps：
(1) crush：Rough quartz sand is put into disintegrating machine and crushed, the quartz sand crossed on 10 mesh sieves, sieve continues broken
It is broken, 15 mesh sieves are crossed, then the quartz sand sieved twice are mixed, crushed, 20 mesh sieves are crossed；
(2) desliming：Quartz sand after step (1) is sieved soaks 30min with cleaning fluid, and desliming is rinsed with clear water；It is described
Cleaning fluid includes sodium metasilicate, active carbon powder, second alcohol and water, and its preparation method is：60 DEG C are heated the water to, ethanol is added,
The volume ratio of water and ethanol is 3:2, sodium metasilicate, stirring are added after dissolving completely, it is ensured that the concentration of sodium metasilicate is 6%, will
Temperature drops to room temperature, adds active carbon powder, and the cleaning fluid is made；
(3) acidleach：Quartz sand after desliming is soaked in acid solution, the acid solution by 15% concentration oxalic acid, 0.8% dense
The formic acid of degree and 0.5% citric acid composition；
(4) clean：Quartz sand after acidleach is cleaned with clear water, the quartz sand after finally being purified.
Disintegrating machine rotating speed is 800r/min in the step (1), and power is 12kW.
The temperature of step (3) acidleach is 45 DEG C, and the time is 5h.
Embodiment 3：
A kind of quartz sand purifying technique, comprises the following steps：
(1) crush：Rough quartz sand is put into disintegrating machine and crushed, the quartz sand crossed on 10 mesh sieves, sieve continues broken
It is broken, 15 mesh sieves are crossed, then the quartz sand sieved twice are mixed, crushed, 20 mesh sieves are crossed；
(2) desliming：Quartz sand after step (1) is sieved soaks 25min with cleaning fluid, and desliming is rinsed with clear water；It is described
Cleaning fluid includes sodium metasilicate, active carbon powder, second alcohol and water, and its preparation method is：57 DEG C are heated the water to, ethanol is added,
The volume ratio of water and ethanol is 3:2, sodium metasilicate, stirring are added after dissolving completely, it is ensured that the concentration of sodium metasilicate is 7%, will
Temperature drops to room temperature, adds active carbon powder, and the cleaning fluid is made；
(3) acidleach：Quartz sand after desliming is soaked in acid solution, the acid solution by 12% concentration oxalic acid, 0.9% dense
The formic acid of degree and 0.4% citric acid composition；
(4) clean：Quartz sand after acidleach is cleaned with clear water, the quartz sand after finally being purified.
Rough quartz sand specification is 5 mesh in the step (1).
Disintegrating machine rotating speed is 750r/min in the step (1), and power is 12kW.
The temperature of step (3) acidleach is 40 DEG C, and the time is 6h.
Embodiment 4：
A kind of quartz sand purifying technique, comprises the following steps：
(1) crush：Rough quartz sand is put into disintegrating machine and crushed, the quartz sand crossed on 10 mesh sieves, sieve continues broken
It is broken, 15 mesh sieves are crossed, then the quartz sand sieved twice are mixed, crushed, 20 mesh sieves are crossed；
(2) desliming：Quartz sand after step (1) is sieved soaks 25min with cleaning fluid, and desliming is rinsed with clear water；It is described
Cleaning fluid includes sodium metasilicate, active carbon powder, second alcohol and water, and its preparation method is：55 DEG C are heated the water to, ethanol is added,
The volume ratio of water and ethanol is 3:2, sodium metasilicate, stirring are added after dissolving completely, it is ensured that the concentration of sodium metasilicate is 8%, will
Temperature drops to room temperature, adds active carbon powder, and the cleaning fluid is made；
(3) acidleach：Quartz sand after desliming is soaked in acid solution, the acid solution by 10% concentration oxalic acid, 0.9% dense
The formic acid of degree and 0.5% citric acid composition；
(4) clean：Quartz sand after acidleach is cleaned with clear water, the quartz sand after finally being purified.
Disintegrating machine rotating speed is 700r/min in the step (1), and power is 12kW.
The temperature of step (3) acidleach is 45 DEG C, and the time is 6h.
The main content of various embodiments above product and several major impurities are detected, it is as a result as follows：
| SiO2(%) | Fe2O3(%) | Al2O3(%) | TiO2(%) | |
| Existing index | 99.9 | 0.01 | 0.06 | 0.04 |
| Embodiment 1 | 99.95 | 0.006 | 0.026 | 0.013 |
| Embodiment 2 | 99.95 | 0.006 | 0.023 | 0.012 |
| Embodiment 3 | 99.94 | 0.006 | 0.023 | 0.014 |
| Embodiment 4 | 99.93 | 0.006 | 0.024 | 0.012 |
As seen from the above table, the quartz sand purity that prepared by the present invention is up to standard, and major impurity content can be controlled in standard value one
Down and far below standard value.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a kind of quartz sand purifying technique, it is characterised in that comprise the following steps：
(1) crush：Rough quartz sand is put into disintegrating machine and crushed, the quartz sand crossed on 10 mesh sieves, sieve continues broken, mistake
15 mesh sieves, then mix the quartz sand sieved twice, crush, and cross 20 mesh sieves；
(2) desliming：Quartz sand after step (1) is sieved soaks 20-30min with cleaning fluid, and desliming is rinsed with clear water；It is described clear
Washing lotion includes sodium metasilicate, active carbon powder, second alcohol and water, and its preparation method is：55-60 DEG C is heated the water to, ethanol is added,
The volume ratio of water and ethanol is 3:2, sodium metasilicate, stirring are added after dissolving completely, it is ensured that the concentration of sodium metasilicate is 5-8%,
Room temperature is reduced the temperature to, active carbon powder is added, the cleaning fluid is made；
(3) acidleach：Quartz sand after desliming is soaked in acid solution, oxalic acid, 0.8- of the acid solution by 10-15% concentration
The formic acid of 0.9% concentration and 0.4-0.5% citric acid composition；
(4) clean：Quartz sand after acidleach is cleaned with clear water, the quartz sand after finally being purified.
2. quartz sand purifying technique as claimed in claim 1, it is characterised in that rough quartz sand specification in the step (1)
For 5 mesh.
3. quartz sand purifying technique as claimed in claim 1, it is characterised in that disintegrating machine rotating speed is in the step (1)
700-800r/min, power is 12kW.
4. quartz sand purifying technique as claimed in claim 1, it is characterised in that the temperature of step (3) acidleach is 40-45
DEG C, the time is 5-6h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494217.6A CN107128936A (en) | 2017-06-26 | 2017-06-26 | A kind of quartz sand purifying technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710494217.6A CN107128936A (en) | 2017-06-26 | 2017-06-26 | A kind of quartz sand purifying technique |
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| CN107128936A true CN107128936A (en) | 2017-09-05 |
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| CN201710494217.6A Pending CN107128936A (en) | 2017-06-26 | 2017-06-26 | A kind of quartz sand purifying technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744819A (en) * | 2019-10-31 | 2021-05-04 | 青川县云龙麒达石英砂有限责任公司 | Preparation method of high-purity quartz sand |
| CN113976290A (en) * | 2021-11-30 | 2022-01-28 | 青岛阿莫斯资源科技有限公司 | Preparation method of high-purity quartz sand |
| CN114455590A (en) * | 2022-03-25 | 2022-05-10 | 聂建中 | Quartz sand acid elution pure method |
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| CN101733192A (en) * | 2009-12-21 | 2010-06-16 | 贵研铂业股份有限公司 | Method for purifying quartz sand ore by using physical method |
| US20120103017A1 (en) * | 2009-07-09 | 2012-05-03 | Ludwig Frank-Peter | Method for producing a highly pure quartz granulate |
| CN103964444A (en) * | 2014-05-05 | 2014-08-06 | 临沂晟泉矿业有限公司 | Method for producing high-purity quartz sand |
| CN105000565A (en) * | 2015-07-16 | 2015-10-28 | 安徽东阳矿业科技有限公司 | Compounding-based quartz sand purification technology |
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2017
- 2017-06-26 CN CN201710494217.6A patent/CN107128936A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120103017A1 (en) * | 2009-07-09 | 2012-05-03 | Ludwig Frank-Peter | Method for producing a highly pure quartz granulate |
| CN101733192A (en) * | 2009-12-21 | 2010-06-16 | 贵研铂业股份有限公司 | Method for purifying quartz sand ore by using physical method |
| CN103964444A (en) * | 2014-05-05 | 2014-08-06 | 临沂晟泉矿业有限公司 | Method for producing high-purity quartz sand |
| CN105000565A (en) * | 2015-07-16 | 2015-10-28 | 安徽东阳矿业科技有限公司 | Compounding-based quartz sand purification technology |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744819A (en) * | 2019-10-31 | 2021-05-04 | 青川县云龙麒达石英砂有限责任公司 | Preparation method of high-purity quartz sand |
| CN113976290A (en) * | 2021-11-30 | 2022-01-28 | 青岛阿莫斯资源科技有限公司 | Preparation method of high-purity quartz sand |
| CN114455590A (en) * | 2022-03-25 | 2022-05-10 | 聂建中 | Quartz sand acid elution pure method |
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Application publication date: 20170905 |