CN1789123A - Process for preparing quartz sand using quartz gravel - Google Patents
Process for preparing quartz sand using quartz gravel Download PDFInfo
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- CN1789123A CN1789123A CN 200510022652 CN200510022652A CN1789123A CN 1789123 A CN1789123 A CN 1789123A CN 200510022652 CN200510022652 CN 200510022652 CN 200510022652 A CN200510022652 A CN 200510022652A CN 1789123 A CN1789123 A CN 1789123A
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- quartz
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- quartz sand
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/06—Glass compositions containing silica with more than 90% silica by weight, e.g. quartz
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- Life Sciences & Earth Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Silicon Compounds (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a process for preparing ganister sand by using quartz gravel stone, mainly comprising breaking, and autogenous grinding with water, light choosing, calcining, autogenous grinding and cleaning. The process removes the iron pollutant on the surface of the gravel stone and foreign matter in crack by employing autogenous grinding with water, which avoids the problem of hard separating of the iron menbrane, foreign matter and quarte resulted from direct gravel stone breaking; furthermore, choosing acceptable quarte with light choosing, disintegrating fine mineral containing aluminosilicate with alkaline solution such as caustic soda solution, and etc, removing minute quantity aluminium and iron from the sand with acid especially with sulfuric acid. The process is characterized by sound effect, little pollution, effectively increased value of the quarte gravel sand source, the total foreign matter of trace metal in the quarte gravel sand being less than 50 ppm, and the SiO2 content more than 99.99%.
Description
Technical field
The present invention relates to a kind ofly prepare the production technique of quartz sand, relate in particular to a kind of ovum shape quartz conglomerate that utilizes and prepare the technology of transparency silica glass with quartz sand by quartz conglomerate.
Background technology
Time immemorial, Donghai County and form a large amount of quartz veins in the neighbourhood, now, ancient quartz vein great majority suffer that geologic function destroys, accumulate in together behind the carrying rounding, have formed ovum shape quartz conglomerate layer (stone canopy), and stock number reaches hundred million tons.Brown red or isabelline irony book film is generally adhered on the quartz conglomerate surface, and internal crack is grown, filling impurity in the seam of crack.These gravels SiO
2Content is low, foreign matter content is high, if can will fundamentally solve high grade quartz shortage of resources problem as producing the raw material of transparency silica glass with quartz sand.
Summary of the invention
The invention provides a kind of quartz conglomerate that utilizes that can reduce to pollute the utility value that also can promote the quartz conglomerate resource and prepare the technology of transparency silica glass with quartz sand.
The present invention adopts following technical scheme to solve its technical problem:
The first step: get quartz conglomerate and it is broken into fragment,
Second step: the quartz conglomerate fragment is dropped in the autogenous mill, is that 1: 0.35～0.5 ratio adds to water and carries out autogenous grinding in the autogenous mill in the mass ratio of quartz conglomerate and water,
The 3rd step: in the quartz conglomerate fragment after autogenous grinding, obtain qualified gravel fragment after rejecting impure quartz conglomerate fragment, again with 900 ℃～950 ℃ calcining shrends after 2 hours～2.5 hours of qualified quartz conglomerate fragment, qualified quartz conglomerate fragment is softened, after this with the pair roller type ore crusher the quartzy fragment of remollescent is pulverized, obtain quartz sand
The 4th step: the qualified quartz conglomerate fragment after will softening places alkali lye (sodium hydrate content＞20%), be heated to the boiling and kept 30 minutes～45 minutes, take out quartz sand, place 50 ℃～60 ℃ acid solution (sulfuric acid＞10%) immersion to take out after 15 minutes～25 minutes to it again, at last, with deionized water quartz sand is cleaned, making the ph value is 6.8～7.0, again in 70 ℃～80 ℃ dryings.
Compared with prior art, the present invention has following advantage:
(1) the present invention adopts the autogenous grinding of band water, water can lubricate again can clean surface, by autogenous grinding can remove that gravel surface irony is polluted and the crack in impurity, that is: gravel fragment and water are placed on autogenous grinding in the autogenous mill together, fragment collides mutually, can grind off the irony film on surface.When colliding mutually, gravel can break along fissure-plane, make and adhere to the irony film on the charges and fissure-plane between the crack and exposed, and with the friction separate with gravel, like this, can avoid irony film, foreign material and quartzy fragment being mixed causedly be difficult to isolating problem, and improve the SiO of quartz sand thus because of directly gravel being pulverized
2Content has reduced foreign matter content.In addition, embathe with the used hydrochloric acid of prior art and to remove gravel surface iron and dye and compare, reduced environmental pollution.
(2) the present invention adopts the method for light choosing to choose qualified quartz, promptly peeled off the quartzy fragment of epidermis by autogenous grinding with the rayed of certain intensity, make both transparencies of distinguishable quartzy fragment of the present invention, whether distinguishable again quartzy fragment inside has opaque impurity, thereby pick out containing wherein light tight (impurity is many) or the inner defective fragment that dark point is arranged, select qualified quartz.
(3) the present invention adopts alkali to soak, and has promptly decomposed the tiny aluminium silicate mineral that contains with basic solution corrosions such as sodium hydroxide, adds hydrofluoric acid leaching (i.e. what is called " peeling ") operation with the used hydrochloric acid of prior art and compares, and effect is better, and further reduces environmental pollution.Especially remove Trace Aluminum, irony etc. in the sand with sulfuric acid with acid, improved the purity of quartz sand, and the sulfuric acid colorless and odorless, relative environmental protection.
(4) process quartz conglomerate with the present invention and produce transparency silica glass quartz sand, the utility value of quartz conglomerate resource will effectively have been promoted, alleviate the contradiction of high purity quartz resource scarcity, can reduce the severe environmental pollution that present transparency silica glass occurs with acid treatment processes such as quartz sand processing hydrofluoric acid greatly.
(5) quartz conglomerate (raw ore) SiO
2Content 97%～98.5%, iron level are greater than 0.8%, and foreign matter contents such as aluminium, potassium are greater than 0.5%.Iron mainly is film like and applies in gravel surface or crack, can remove more than 99% by band water autogenous grinding and screening.Element such as aluminium, potassium mainly is distributed in tiny (0.05mm) white mica mineral, white mica often is distributed on the fissure-plane, minority is distributed between the crystal quartz particle, can remove (mainly be distributed in the powder less than 0.125mm, only a few is microgranular and applies at quartz sand surface) more than 97% by being with water autogenous grinding and screening, classification.The quartz sand SiO that quartz conglomerate prepares by autogenous grinding, light choosing, calcining, pulverizing, the classification pollution-free courses of processing of physics such as (removing powder)
2Content 99.85%～99.89%.Sodium hydroxide and white mica reaction form water-soluble salt, and the sodium hydroxide solution of heating boils white mica, and white mica decomposes (corrosion) rate and reaches more than 99%.Sulfuric acid solubilized ferric oxide and aluminium (salt) and other micro-metalss embathe quartz sand with hot sulphuric acid soln, remove wherein remaining aluminium salt, ferric oxide and other metal, make in the quartz sand micro-metals total impurities less than 50ppm, SiO
2Content satisfies the requirement of transparent quartz glass tube production to raw material greater than 99.99%.
Embodiment
Embodiment 1:
A kind of technology of utilizing quartz conglomerate to prepare quartz sand:
1. get quartz conglomerate and it is broken into fragment, quartz conglomerate is broken into particle diameter less than 4 centimetres fragment
2. the quartz conglomerate fragment being dropped in the autogenous mill, is that 1: 0.35～0.5 ratio adds to water and carries out autogenous grinding in the autogenous mill in the mass ratio of quartz conglomerate and water, and the time consuming certainly of quartz conglomerate is 10～12 hours.In the present embodiment, the mass ratio of quartz conglomerate and water is chosen as 1: 0.35,1: 0.4,1: 0.45,1: 0.5, the time consuming certainly of quartz conglomerate optional 10 hours, 11 hours, 12 hours.
3. obtain particle more than the 1.5cm by screening.
4. the quartz conglomerate fragment more than the 1.5cm is put on the light selecting machine, removes gravel fragment opaque, that there is dark some inside
5. with 900 ℃-950 ℃ calcining shrends after 2 hours～2.5 hours of qualified quartz conglomerate fragment, qualified quartz conglomerate fragment is softened.Calcining temperature is optional 900 ℃, 950 ℃ in the present embodiment, calcination time optional 2 hours, 2.5 hours.
6. with the pair roller type ore crusher the quartzy fragment of remollescent is pulverized, obtained quartz sand, the quartz sand powder classification is become the quartz sand of 0.425mm-0.250mm, 0.250mm-0.180mm, 0.180mm-0.125mm and less than the powder of 0.125mm.
7. the qualified quartz conglomerate fragment after will softening places alkali lye (sodium hydrate content＞20%), be heated to the boiling and kept 30 minutes～45 minutes, take out quartz sand, place 50 ℃～60 ℃ acid solution (sulfuric acid＞10%) immersion to take out after 15 minutes～25 minutes to it again, at last, with deionized water quartz sand is cleaned, making the ph value is 6.8～7.0, again in 70 ℃～80 ℃ dryings.Optional 30 minutes, 35 minutes, 40 minutes, the 45 minutes ebuillition of heated time of alkali lye in the present embodiment, optional 50 ℃, 60 ℃ of the temperature of acid solution, soak time optional 15 minutes, 20 minutes, 25 minutes, optional 70 ℃, 75 ℃, 80 ℃ of the temperature of cleaning after drying.
Embodiment 2:
Get Donghai County Ox Mountain town, Jiangsu Province ovum shape quartz conglomerate 50kg, work program is as follows:
1, coarse crushing: jaw crusher is broken into fragment less than 4cm with quartz conglomerate.
2, autogenous grinding: the quartz conglomerate fragment is dropped in the horizontal autogenous mill, gravel about 1: 0.5 than water, autogenous grinding 10 hours--12 hours.
3, the above gravel fragment 43.4kg of screening: 1.5cm; 1.5cm following particle 6.25kg.
4, light choosing: the quartz conglomerate fragment more than the 1.5cm is put on the light selecting machine, rejects defective gravel fragment (8.1kg) opaque, that there is dark some inside.
5, calcining and shrend: with 900 ℃ of calcining shrends after 2 hours of qualified quartz conglomerate fragment.
6, pulverize: with the pair roller type ore crusher soft quartzy fragment is pulverized and all passed through 0.425mm.
7, classification: the quartz sand powder classification become the quartz sand of 0.425mm-0.250mm (11.60kg), 0.250mm-0.180mm (7.2kg), 0.180mm-0.125mm (7.5kg) and less than the powder of 0.125mm (8.8kg).
8, alkali soaks: adopt 25% sodium hydroxide solution, liquid-solid ratio 5: 1 was boiled size fractionated quartz sand 45 minutes.
9, pickling: use 10% sulfuric acid, liquid-solid ratio 3: 1 is embathed the quartz sand of alkaline purification, 50 ℃, soaked 15 minutes.
10, clean: with washed with de-ionized water size fractionated quartz sand concentrate,
11, drying: 70 ℃ of dryings.
12, packing: quartz sand (26.15kg).
SiO in the quartz sand for preparing with this method
2Content 99.993%-99.998% (analysis of gelatin weighting method), ten various trace elements total amounts such as aluminium, potassium, iron, copper are less than 35ppm (inductively coupled plasma emmission spectrum ICP mensuration).
Do the trombone slide test with the quartz sand that this technology prepares, make qualified thermostable transparent electric light source silica tube.
Claims (5)
1, a kind of technology of utilizing quartz conglomerate to prepare quartz sand is characterized in that:
The first step: get quartz conglomerate and it is broken into fragment,
Second step: the quartz conglomerate fragment is dropped in the autogenous mill, is that 1: 0.35～0.5 ratio adds to water and carries out autogenous grinding in the autogenous mill in the mass ratio of quartz conglomerate and water,
The 3rd step: in the quartz conglomerate fragment after autogenous grinding, obtain qualified gravel fragment after rejecting impure quartz conglomerate fragment, again with 900 ℃～950 ℃ calcining shrends after 2 hours～2.5 hours of qualified quartz conglomerate fragment, qualified quartz conglomerate fragment is softened, after this with the pair roller type ore crusher the quartzy fragment of remollescent is pulverized, obtain quartz sand
The 4th step: the qualified quartz conglomerate fragment after will softening places alkali lye (sodium hydrate content＞20%), be heated to the boiling and kept 30 minutes～45 minutes, take out quartz sand, place 50 ℃～60 ℃ acid solution (sulfuric acid＞10%) immersion to take out after 15 minutes～25 minutes to it again, at last, with deionized water quartz sand is cleaned, making the ph value is 6.8～7.0, again in 70 ℃～80 ℃ dryings.
2, the technology of utilizing quartz conglomerate to prepare quartz sand according to claim 1 is characterized in that the time consuming certainly of quartz conglomerate is 10～12 hours, after the autogenous grinding, obtains particle more than the 1.5cm by screening.
3, the technology of utilizing quartz conglomerate to prepare quartz sand according to claim 2, the rejecting that it is characterized in that impure quartz conglomerate fragment is that the quartz conglomerate fragment more than the 1.5cm is put on the light selecting machine, removes gravel fragment opaque, that there is dark some inside.
4, according to claim 1, the 2 or 3 described technologies of utilizing quartz conglomerate to prepare quartz sand, it is characterized in that after quartzy fragment is pulverized with remollescent with the pair roller type ore crusher, the quartz sand powder classification become the quartz sand of 0.425mm-0.250mm, 0.250mm-0.180mm, 0.180mm-0.125mm and less than the powder (making the silicon powder raw material in addition) of 0.125mm, respectively through alkali soak, pickling and clean after promptly obtain size fractionated quartz sand.
5, the technology of utilizing quartz conglomerate to prepare quartz sand according to claim 1, it is characterized in that getting quartz conglomerate and it is broken into fragment is that quartz conglomerate is broken into particle diameter less than 4 centimetres fragment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100226526A CN1319853C (en) | 2005-12-27 | 2005-12-27 | Process for preparing quartz sand using quartz gravel |
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| CNB2005100226526A CN1319853C (en) | 2005-12-27 | 2005-12-27 | Process for preparing quartz sand using quartz gravel |
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| CN1789123A true CN1789123A (en) | 2006-06-21 |
| CN1319853C CN1319853C (en) | 2007-06-06 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481203B (en) * | 2009-02-19 | 2011-03-02 | 申士富 | Preparation of fused silica material |
| CN101555044B (en) * | 2009-03-25 | 2011-04-20 | 吴帅 | Method for softening hardwater by taking river-sand as raw material |
| CN102602942A (en) * | 2012-03-25 | 2012-07-25 | 连云港金瑞照明电器有限公司 | Method for preparing high-purity quartz sand |
| CN104556073A (en) * | 2015-01-16 | 2015-04-29 | 陈旭 | Process for purifying inorganic nonmetallic minerals |
| CN107626437A (en) * | 2017-09-19 | 2018-01-26 | 江苏凯达石英股份有限公司 | A kind of glass sand preparation method of ultra-low metals content |
| CN108928824A (en) * | 2018-06-26 | 2018-12-04 | 广西浙缘农业科技有限公司 | A kind of preparation process of glass sand |
| CN110002455A (en) * | 2019-03-26 | 2019-07-12 | 黄冈师范学院 | A method of removing blue illite particulate matter from blue mouth quartz sand particle |
| CN110561200A (en) * | 2019-08-02 | 2019-12-13 | 菲特晶(南京)电子有限公司 | quartz wafer processing technology |
| CN112010317A (en) * | 2020-09-14 | 2020-12-01 | 昆明理工大学 | Method for purifying quartz sand by microwave-vacuum combined roasting |
| CN112919478A (en) * | 2021-03-12 | 2021-06-08 | 武汉理工大学 | Preparation method of high-purity quartz |
| CN113479894A (en) * | 2021-07-27 | 2021-10-08 | 深圳市考拉生态科技有限公司 | Environment-friendly quartz sand purification process |
| CN113603102A (en) * | 2021-07-27 | 2021-11-05 | 深圳市考拉生态科技有限公司 | Quartz sand alkali leaching purification process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1156689A (en) * | 1996-12-20 | 1997-08-13 | 杨忠伦 | High-efficiency method for removing impurities containing iron from quartz sand |
| CN1562743A (en) * | 2004-04-07 | 2005-01-12 | 张殿飞 | Method for preparing hyperpure quartz grains |
-
2005
- 2005-12-27 CN CNB2005100226526A patent/CN1319853C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481203B (en) * | 2009-02-19 | 2011-03-02 | 申士富 | Preparation of fused silica material |
| CN101555044B (en) * | 2009-03-25 | 2011-04-20 | 吴帅 | Method for softening hardwater by taking river-sand as raw material |
| CN102602942A (en) * | 2012-03-25 | 2012-07-25 | 连云港金瑞照明电器有限公司 | Method for preparing high-purity quartz sand |
| CN102602942B (en) * | 2012-03-25 | 2013-12-25 | 连云港金瑞照明电器有限公司 | Method for preparing high-purity quartz sand |
| CN104556073A (en) * | 2015-01-16 | 2015-04-29 | 陈旭 | Process for purifying inorganic nonmetallic minerals |
| CN107626437B (en) * | 2017-09-19 | 2019-11-29 | 江苏凯达石英股份有限公司 | A kind of glass sand preparation method of ultra-low metals content |
| CN107626437A (en) * | 2017-09-19 | 2018-01-26 | 江苏凯达石英股份有限公司 | A kind of glass sand preparation method of ultra-low metals content |
| CN108928824A (en) * | 2018-06-26 | 2018-12-04 | 广西浙缘农业科技有限公司 | A kind of preparation process of glass sand |
| CN110002455A (en) * | 2019-03-26 | 2019-07-12 | 黄冈师范学院 | A method of removing blue illite particulate matter from blue mouth quartz sand particle |
| CN110561200A (en) * | 2019-08-02 | 2019-12-13 | 菲特晶(南京)电子有限公司 | quartz wafer processing technology |
| CN112010317A (en) * | 2020-09-14 | 2020-12-01 | 昆明理工大学 | Method for purifying quartz sand by microwave-vacuum combined roasting |
| CN112919478A (en) * | 2021-03-12 | 2021-06-08 | 武汉理工大学 | Preparation method of high-purity quartz |
| CN113479894A (en) * | 2021-07-27 | 2021-10-08 | 深圳市考拉生态科技有限公司 | Environment-friendly quartz sand purification process |
| CN113603102A (en) * | 2021-07-27 | 2021-11-05 | 深圳市考拉生态科技有限公司 | Quartz sand alkali leaching purification process |
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| Publication number | Publication date |
|---|---|
| CN1319853C (en) | 2007-06-06 |
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