GB1092656A - Process for the production of purified quartz sand - Google Patents

Process for the production of purified quartz sand

Info

Publication number
GB1092656A
GB1092656A GB4972064A GB4972064A GB1092656A GB 1092656 A GB1092656 A GB 1092656A GB 4972064 A GB4972064 A GB 4972064A GB 4972064 A GB4972064 A GB 4972064A GB 1092656 A GB1092656 A GB 1092656A
Authority
GB
United Kingdom
Prior art keywords
particles
diameter
sand
quartzose
impurities
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4972064A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB4972064A priority Critical patent/GB1092656A/en
Priority to FR997963A priority patent/FR1416925A/en
Priority to GB5121164A priority patent/GB1092658A/en
Publication of GB1092656A publication Critical patent/GB1092656A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/04—Clay; Kaolin
    • C04B33/06—Rendering lime harmless
    • 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
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/02—Pretreated ingredients
    • C03C1/022—Purification of silica sand or other minerals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/30—Drying methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Taps Or Cocks (AREA)
  • Silicon Compounds (AREA)
  • Dental Preparations (AREA)

Abstract

Purified quartz sand is produced from quartzose crude sand containing non-quartzose particles as impurities by washing particles of diameter 0.1-0.3 mm. at room temperature or above, e.g. 40-120 DEG C., at atmospheric or superatmospheric pressure with an aqueous medium of pH 7.0-11.0, preferably 9.0 to 9.5, containing a wetting agent (e.g. alkyl-benzene sulphonates or ethylene oxide addition polymers) and when necessary, a compound capable of forming complex salts with the cations present in the impurities (e.g. iron, calcium, magnesium, manganese, aluminium, titanium, chromium) such as monobasic or polybasic acids having one or more hydroxyl or nitrogen-containing groups, e.g. salicylic acid, dihydroxymaleic acid, hydroxamic acids, pyrophosphoric acid, tartanic and thioglycollic acids, and the washed sand particles are subjected to an electrostatic or electromagnetic field (e.g. of strength >20 kilogauss at an air gap of 0.5-5.0 mm) to separate quartzone particles from non-quartzose. It is necessary to use such complex-forming compounds when the impurities are very firmly adhered to the particles. The ratio by weight of aqueous medium to crude sand may be \sF2:1. The washing action may be enhanced by producing pressure waves of frequency >20 kc/s., preferably >80 kc/s., and preferably of intensity >0.5 watts/sq. cm. causing implosions on the surfaces of the particles. Spark discharges of energy 500-10,000 watt-secs. may also be used. The crude sand may also be washed preliminarily with water rendered alkaline of pH 7.0-11.0, which may be repeated one or more times. Particles of diameter 0.1-0.3 mm. are obtained from natural quartzone crude sand by separating particles of diameter < 0.1 mm. and > 1.0 mm., and separating those of diameter 0.1 to 0.3 mm. from the resulting fraction by hydroclassification in the water used for the preliminary washings. The particles of diameter 0.3 mm. to 1.00 mm. may be disintegrated to give more particles of diameter 0.1 to 0.3 mm., all of which may be further graded, e.g. into fractions having particle sizes of 0.1 to 0.2 mm. and 0.2 to 0.3 mm.
GB4972064A 1964-12-07 1964-12-07 Process for the production of purified quartz sand Expired GB1092656A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4972064A GB1092656A (en) 1964-12-07 1964-12-07 Process for the production of purified quartz sand
FR997963A FR1416925A (en) 1964-12-07 1964-12-09 Process for obtaining pure quartz sand
GB5121164A GB1092658A (en) 1964-12-07 1964-12-16 Fluid flow shut off valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4972064A GB1092656A (en) 1964-12-07 1964-12-07 Process for the production of purified quartz sand

Publications (1)

Publication Number Publication Date
GB1092656A true GB1092656A (en) 1967-11-29

Family

ID=10453313

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4972064A Expired GB1092656A (en) 1964-12-07 1964-12-07 Process for the production of purified quartz sand
GB5121164A Expired GB1092658A (en) 1964-12-07 1964-12-16 Fluid flow shut off valve

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB5121164A Expired GB1092658A (en) 1964-12-07 1964-12-16 Fluid flow shut off valve

Country Status (1)

Country Link
GB (2) GB1092656A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219840A2 (en) * 1985-10-21 1987-04-29 Lothar Jung Modified close fraction batch process for purification of SiO2

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219840A2 (en) * 1985-10-21 1987-04-29 Lothar Jung Modified close fraction batch process for purification of SiO2
EP0219840A3 (en) * 1985-10-21 1990-02-07 Lothar Jung Modified close fraction batch process for purification of sio2

Also Published As

Publication number Publication date
GB1092658A (en) 1967-11-29

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