CN108275686A - A kind of production method of natural siliceous sand - Google Patents
A kind of production method of natural siliceous sand Download PDFInfo
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- CN108275686A CN108275686A CN201810348474.3A CN201810348474A CN108275686A CN 108275686 A CN108275686 A CN 108275686A CN 201810348474 A CN201810348474 A CN 201810348474A CN 108275686 A CN108275686 A CN 108275686A
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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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Abstract
The invention discloses a kind of production methods of natural siliceous sand, are related to the preparing technical field of quartz sand, and production method is：Quartz fragment is placed in calcining furnace and fires by ore dressing, coarse crushing, then releases the quartz calcined out of stove, air-cooled or cooled to room temperature；Acid solution is added in sour pond in fine crushing and magnetic separation, and the acid solution in sour pond is taken away, and the quartz sand after Suan Chi lower layers are soaking washes away the acid on quartz sand particle surface by conveyer feeding rinsing machine with high pressure water washing；Slurry after ultrasonic cleaning is sent into drying machine drying by ultrasonic cleaning, and sub-sieve obtains the glass sand.The production method of the natural siliceous sand have the advantages that simple for process, easy to operate, equipment investment is few, it is at low cost, pollution-free, can be mass, and good natural siliceous sand can be produced, acid solution after filtration treatment by recycling in acid cleaning process, it is recycled after the acid mist collecting that pickling generates, greatly reduces pollution of the acid solution to environment.
Description
Technical field
The present invention relates to the preparing technical fields of quartz sand, belong to a kind of production method of natural siliceous sand.
Background technology
Natural high-purity quartz sand is process by the natural water spar of high quality, and dioxide-containing silica is high, impurity content
It is low, natural high-purity quartz sand main component be silica, content be more than 99.99%, also contain aluminium oxide, iron oxide, calcium,
The trace elements such as lead, boron, magnesium, sodium, wherein alumina content are less than 30 ppm, and iron oxide content is less than 5 ppm, and calcium content is less than
5ppm, size distribution are 0.05-1 millimeters.Natural high-purity quartz sand is a kind of hard, wear-resisting, stable chemical performance silicic acid
Salt mineral, when production are to use 1-3 grades of natural water spar or high-quality natural stone class for raw material, by well-chosen, it is fine plus
Work forms, and for the particle size range of product between 0.05-1 millimeters, appearance is semi-transparent clear shape, density 2.65, insoluble
In acid, it is slightly soluble in potassium hydroxide solution.Natural high-purity quartz sand is expensive high-grade variety in quartz sand series of products,
Its physics, chemical property are stablized, unique in molecular chain structure, crystal shape and lattice variations rule especially in it, have resistance to
High temperature, corrosion-resistant, coefficient of thermal expansion is small, the advantage of good insulating, optical property uniqueness, is mainly used as ceramics, optical fiber, quartz
The raw material of glass, quartz ampoule, quartz pushrod, silica crucible also has important purposes in industries such as optical communication, illumination, semiconductors.
But since there is lack of raw materials for mineral crystal, and it is expensive.With the gradually exhaustion of Crystal Resances, from last century
In the 70's, various countries, which start to explore, with common silica mine replaces crystal to prepare glass sand, and the U.S. is in a leading position water at present
It is flat, its main feature is that industrialization yield is big, prepare specialization, high degree of automation, detection level height, product quality stablize it is existing
Glass sand monopolized by a few countries such as the U.S., Germany, Russia.Thus, make raw material using natural siliceous sand, substitutes
Crystal high purity quartz sand has realistic meaning.
Invention content
In view of the above-mentioned problems, the technical problem to be solved in the present invention is to provide a kind of production methods of natural siliceous sand.
A kind of production method of natural siliceous sand of the present invention is：Step 1: ore dressing, first carries out natural vein quartz ore
Artificial separation rejects the stone that naked eyes visible foreign and color differ greatly with whole ore, selects SiO2 Content >=96%
Natural stone diamond stone be raw material, selected natural stone diamond stone is subjected to peeling removal of impurities, first use high pressure water washing natural stone diamond stone, go
After the attachment of natural stone diamond stone outer surface, natural stone diamond stone is sent into skinning machine and removes epidermis；
Step 2: the natural stone diamond stone of step 1 peeling is sent into crusher, coarse crushing is carried out, it is 60-70mm stones to obtain size
Quartz fragment is placed in calcining furnace and fires by diamond stone fragment, then releases the quartz calcined out of stove, it is air-cooled or
Cooled to room temperature；
Step 3: fine crushing and magnetic separation, the granularity milled, milled out is put into grinding mill by step 2 firing quartz fragment
It is sent into magnetic separator, when quartz sand passes through magnetic separator, the quartz sand containing magnetic, containing metal and metal oxide for 6-12mm quartz sands
By magnetic field Adsorption powerful in magnetic separator, after 15-20 minutes magnetic separation time magnetic separation terminate, the quartz sand after magnetic separation is sent into
Sour pond；
Step 4: acid solution is added in sour pond, impregnates after being slightly agitated for 24-36 hours, then take out the acid solution in sour pond
It walks, the quartz sand after Suan Chi lower layers are soaking is sent into rinsing machine by conveyer and washes away quartz sand particle surface with high pressure water washing
Acid；
Step 5: ultrasonic cleaning, send the slurry after pickling into supersonic wave cleaning machine and carries out ultrasonic cleaning, until slurry pH value
For 6-7；
Slurry after ultrasonic cleaning is sent into drying machine drying by step 6, wherein the drying temperature of the dryer is 95
DEG C -100 DEG C, drying time is 2-3 hours；
Step 7: sub-sieve, crosses 6-10 mesh screens by resulting material after drying and sieves, obtain the glass sand.
Preferably, the calcining step that quartz fragment is placed in calcining furnace in the step two is：Calcining furnace is preheated
To 800 DEG C, then quartz block is put into calcining furnace, continues to calcine stove heat to quartz, when in-furnace temperature rises to
Start timing at 750 DEG C, is calcined 2.5-3.5 hours at 750-850 DEG C, be then cooled at 750 DEG C and keep the temperature 1.5
- 3 hours.
Preferably, dilute hydrochloric acid and mass concentration that it is 10%-20% that the acid solution in the step four, which is mass concentration,
The mix acid liquor ingredient formed for the hydrofluoric acid of 5%-10%.
Preferably, the acid solution in the step four after acid-washed quartz sand is after filtration treatment by recycling, pickling
It is recycled after the acid mist collecting of generation.
Preferably, the supersonic frequency of supersonic wave cleaning machine is 70-80KHz in the step five, cleaning temperature is
45-55 DEG C, power density 1-1.5W/cm2。
Beneficial effects of the present invention：There is the production method of the natural siliceous sand simple for process, easy to operate, equipment to throw
The advantages of providing less, be at low cost, pollution-free, can be mass, and good natural siliceous sand can be produced, it is sour in acid cleaning process
Liquid recycles after the acid mist collecting that pickling generates by being recycled after filtration treatment, greatly reduces acid solution to environment
Pollution, more safety and environmental protection.
Specific implementation mode
Present embodiment is described in further detail invention using following technical scheme and embodiment.
The production method of natural siliceous sand is in present embodiment：Step 1: ore dressing, first to natural vein quartz ore
Artificial separation is carried out, the stone that naked eyes visible foreign and color differ greatly with whole ore is rejected, selects SiO2 Content >=
96% natural stone diamond stone is raw material, and selected natural stone diamond stone is carried out peeling removal of impurities, first uses high pressure water washing natural quartz
Natural stone diamond stone after the attachment of removal natural stone diamond stone outer surface, is sent into skinning machine and removes epidermis by stone；
Step 2: the natural stone diamond stone of step 1 peeling is sent into crusher, coarse crushing is carried out, it is 60-70mm stones to obtain size
Quartz fragment is placed in calcining furnace and fires by diamond stone fragment, and the calcining step that quartz fragment is placed in calcining furnace is：It will forge
It burns stove and is preheated to 800 DEG C, then quartz block is put into calcining furnace, continue to calcine stove heat to quartz, when in stove
Temperature starts timing when rising to 750 DEG C, is calcined 3 hours at 800 DEG C, is then cooled at 750 DEG C and keeps the temperature 3 hours, so
The quartz calcined is released out of stove afterwards, air-cooled or cooled to room temperature；
Step 3: fine crushing and magnetic separation, the granularity milled, milled out is put into grinding mill by step 2 firing quartz fragment
It is sent into magnetic separator, when quartz sand passes through magnetic separator, the quartz containing magnetic, containing metal and metal oxide for 6-12mm quartz sands
Sand by magnetic field Adsorption powerful in magnetic separator, after 15-20 minutes magnetic separation time magnetic separation terminate, the quartz sand after magnetic separation is sent
Enter sour pond；
Step 4: acid solution is added in sour pond, the acid solution is the dilute hydrochloric acid that mass concentration is 15% and mass concentration is 8%
Hydrofluoric acid composition mix acid liquor ingredient, impregnates 30 hours after being slightly agitated for, then takes the acid solution in sour pond away, it is sour
Quartz sand after pond lower layer is soaking washes away the acid on quartz sand particle surface by conveyer feeding rinsing machine with high pressure water washing；
Acid solution after acid-washed quartz sand is recycled by being recycled after filtration treatment after the acid mist collecting that pickling generates；
Step 5: ultrasonic cleaning, send the slurry after pickling into supersonic wave cleaning machine and carries out ultrasonic cleaning, until slurry pH value
It is 6, the supersonic frequency of supersonic wave cleaning machine is 75KHz, and cleaning temperature is 50 DEG C, power density 1.2W/cm2；
Step 6: the slurry after ultrasonic cleaning is sent into drying machine drying, wherein the drying temperature of the dryer is 95
DEG C, drying time is 2 hours；
Step 7: sub-sieve, crosses 8 mesh screens by resulting material after drying and sieves, obtain the glass sand.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of production method of natural siliceous sand, it is characterised in that：Specifically production method is：Step 1: ore dressing, first to day
Right vein quartz ore carries out artificial separation, rejects the stone that naked eyes visible foreign and color differ greatly with whole ore, selection
SiO2The natural stone diamond stone of content >=96% is raw material, and selected natural stone diamond stone is carried out peeling removal of impurities, first uses high pressure water
Natural stone diamond stone is rinsed, after the attachment for removing natural stone diamond stone outer surface, natural stone diamond stone is sent into skinning machine and removes epidermis；
Step 2: the natural stone diamond stone of step 1 peeling is sent into crusher, coarse crushing is carried out, it is 60-70mm stones to obtain size
Quartz fragment is placed in calcining furnace and fires by diamond stone fragment, then releases the quartz calcined out of stove, it is air-cooled or
Cooled to room temperature；
Step 3: fine crushing and magnetic separation, the particle milled, milled out is put into grinding mill by the quartz fragment that step 2 is fired
Degree is that 6-12mm quartz sands are sent into magnetic separator, when quartz sand passes through magnetic separator, the quartz containing magnetic, containing metal and metal oxide
Sand by magnetic field Adsorption powerful in magnetic separator, after 15-20 minutes magnetic separation time magnetic separation terminate, the quartz sand after magnetic separation is sent
Enter sour pond；
Step 4: acid solution is added in sour pond, impregnates after being slightly agitated for 24-36 hours, then take out the acid solution in sour pond
It walks, the quartz sand after Suan Chi lower layers are soaking is sent into rinsing machine by conveyer and washes away quartz sand particle surface with high pressure water washing
Acid；
Step 5: ultrasonic cleaning, send the slurry after pickling into supersonic wave cleaning machine and carries out ultrasonic cleaning, until slurry pH value
For 6-7；
Slurry after ultrasonic cleaning is sent into drying machine drying by step 6, wherein the drying temperature of the dryer is 95
DEG C -100 DEG C, drying time is 2-3 hours；
Step 7: sub-sieve, crosses 6-10 mesh screens by resulting material after drying and sieves, obtain the glass sand.
2. a kind of production method of natural siliceous sand according to claim 1, it is characterised in that：Stone in the step two
The calcining step that diamond stone fragment is placed in calcining furnace is：Calcining furnace is preheated to 800 DEG C, quartz block is then put into calcining
In stove, continues to calcine stove heat to quartz, start timing when in-furnace temperature rises to 750 DEG C, forged at 750-850 DEG C
It burns 2.5-3.5 hours, is then cooled at 750 DEG C and keeps the temperature 1.5-3 hours.
3. a kind of production method of natural siliceous sand according to claim 1, it is characterised in that：In the step four
The mix acid liquor for the hydrofluoric acid composition that acid solution is the dilute hydrochloric acid that mass concentration is 10%-20% and mass concentration is 5-10%.
4. a kind of production method of natural siliceous sand according to claim 1, it is characterised in that：It is sour in the step four
The acid solution after quartz sand is washed by being recycled after filtration treatment, is recycled after the acid mist collecting that pickling generates.
5. a kind of production method of natural siliceous sand according to claim 1, it is characterised in that：Surpass in the step five
The supersonic frequency of sound wave cleaning machine is 70-80KHz, and cleaning temperature is 45-55 DEG C, power density 1-1.5W/cm2。
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109530055A (en) * | 2018-09-30 | 2019-03-29 | 福建省吉康新型建材有限公司 | A kind of method of purity quartzite |
| CN109593520A (en) * | 2019-01-30 | 2019-04-09 | 刘红英 | A kind of fracturing propping agents quartz sand and its preparation method and application |
| CN110092384A (en) * | 2019-04-16 | 2019-08-06 | 开鲁县昌达矽砂有限公司 | A kind of production method of natural high-purity quartz sand |
| CN111153409A (en) * | 2020-01-15 | 2020-05-15 | 中国科学院合肥物质科学研究院 | Method for purifying quartz sand by removing iron through microwave heating and ultrasonic-assisted acid leaching |
| CN112850718A (en) * | 2020-11-27 | 2021-05-28 | 东海县晶峰石英制品有限公司 | Preparation method of high-purity quartz sand processed by using quartz raw stone |
| CN114178245A (en) * | 2021-12-14 | 2022-03-15 | 陕西汉鼎辉能源材料科技有限公司 | Method for removing acid-soluble impurities in quartz sand |
| CN114247694A (en) * | 2021-10-25 | 2022-03-29 | 金天环保材料科技(深圳)有限公司 | Hydrocarbon oil-removing cleaning process for metal and nonmetal fine powder and placing container |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530055A (en) * | 2018-09-30 | 2019-03-29 | 福建省吉康新型建材有限公司 | A kind of method of purity quartzite |
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| CN109593520A (en) * | 2019-01-30 | 2019-04-09 | 刘红英 | A kind of fracturing propping agents quartz sand and its preparation method and application |
| CN109593520B (en) * | 2019-01-30 | 2021-08-03 | 刘红英 | Quartz sand for fracturing propping agent and preparation method and application thereof |
| CN110092384A (en) * | 2019-04-16 | 2019-08-06 | 开鲁县昌达矽砂有限公司 | A kind of production method of natural high-purity quartz sand |
| CN111153409A (en) * | 2020-01-15 | 2020-05-15 | 中国科学院合肥物质科学研究院 | Method for purifying quartz sand by removing iron through microwave heating and ultrasonic-assisted acid leaching |
| CN111153409B (en) * | 2020-01-15 | 2022-12-16 | 中国科学院合肥物质科学研究院 | Method for purifying quartz sand by utilizing microwave heating and ultrasonic-assisted acid leaching for iron removal |
| CN112850718A (en) * | 2020-11-27 | 2021-05-28 | 东海县晶峰石英制品有限公司 | Preparation method of high-purity quartz sand processed by using quartz raw stone |
| CN114247694A (en) * | 2021-10-25 | 2022-03-29 | 金天环保材料科技(深圳)有限公司 | Hydrocarbon oil-removing cleaning process for metal and nonmetal fine powder and placing container |
| CN114178245A (en) * | 2021-12-14 | 2022-03-15 | 陕西汉鼎辉能源材料科技有限公司 | Method for removing acid-soluble impurities in quartz sand |
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Application publication date: 20180713 |