GB1486495A - Process and apparatus for forming silicate products - Google Patents

Process and apparatus for forming silicate products

Info

Publication number
GB1486495A
GB1486495A GB38340/75A GB3834075A GB1486495A GB 1486495 A GB1486495 A GB 1486495A GB 38340/75 A GB38340/75 A GB 38340/75A GB 3834075 A GB3834075 A GB 3834075A GB 1486495 A GB1486495 A GB 1486495A
Authority
GB
United Kingdom
Prior art keywords
pipe
silicate
mixing
water
alkali metal
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
GB38340/75A
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.)
Anglian Water Authority
Original Assignee
Anglian Water Authority
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 Anglian Water Authority filed Critical Anglian Water Authority
Priority to GB38340/75A priority Critical patent/GB1486495A/en
Publication of GB1486495A publication Critical patent/GB1486495A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C01B33/20—Silicates
    • C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
    • C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
    • C01B33/42—Micas ; Interstratified clay-mica products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4314—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor with helical baffles
    • 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
    • C01B33/20—Silicates
    • C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
    • 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
    • C01B33/20—Silicates
    • C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
    • C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
    • C01B33/40—Clays
    • 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
    • C01B33/20—Silicates
    • C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
    • C01B33/46—Amorphous silicates, e.g. so-called "amorphous zeolites"
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

1486495 Mixing apparatus ANGLIAN WATER AUTHORITY 18 Sept 1975 38340/75 Heading B1C [Also in Division C1] A process for making an aqueous dispersion of a complex alkali metal-aluminium silicate having a pH of 3-7.5. which contains up to 5% silicate and is soluble in hydrochloric acid, for use as a coagulant, by mixing aqueous solutions of an alkali metal silicate and an aluminium salt in a mixing tube having at least two inlets, comprises supplying the bulk of the water through one inlet and the alkali metal silicate through another, and constraining the mixture to flow in a generally helical path by stationary means in the tube, the pressure drop being at least 40 p.s.i. In the apparatus shown in Fig. 1, sodium or potassium silicate is supplied through pipe 3, aluminium sulphate through pipe 5 and water through pipe 4. A core 10 having helical grooves 12 and with its base in the pipe 4 causes the water to emerge as a rotating annular curtain, the pressure drop in zone A causing high shear; a helical baffle 13 then reverses the direction of rotation with turbulent mixing. Hydrochloric acid may be introduced through a pipe 14. The apparatus may discharge directly to a liquid to be treated, or may be discharged by a hydraulic ejector (16, Fig. 2 not shown) providing additional dilution and pressure below atmospheric by at least 10 m. Hg. Additionally or alternatively to the core 10 there may be in the mixing tube a helix formed of twisted sheet metal which may also be cut perpendicular to its axis to form various arrangements of vanes (see Figs. 4-8, not shown).
GB38340/75A 1975-09-18 1975-09-18 Process and apparatus for forming silicate products Expired GB1486495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB38340/75A GB1486495A (en) 1975-09-18 1975-09-18 Process and apparatus for forming silicate products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38340/75A GB1486495A (en) 1975-09-18 1975-09-18 Process and apparatus for forming silicate products

Publications (1)

Publication Number Publication Date
GB1486495A true GB1486495A (en) 1977-09-21

Family

ID=10402836

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38340/75A Expired GB1486495A (en) 1975-09-18 1975-09-18 Process and apparatus for forming silicate products

Country Status (1)

Country Link
GB (1) GB1486495A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056793A1 (en) * 1981-01-13 1982-07-28 Boliden Aktiebolag A pumpable composition for water-purifying purpose containing iron(II)sulphate
WO1992014541A1 (en) * 1991-02-20 1992-09-03 Dena Technology Mixing and homogenising apparatus
US7857247B2 (en) 2005-08-12 2010-12-28 Brian Sulaiman Milling system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056793A1 (en) * 1981-01-13 1982-07-28 Boliden Aktiebolag A pumpable composition for water-purifying purpose containing iron(II)sulphate
WO1992014541A1 (en) * 1991-02-20 1992-09-03 Dena Technology Mixing and homogenising apparatus
GB2268090A (en) * 1991-02-20 1994-01-05 Dena Technology Mixing and homogenising apparatus
GB2268090B (en) * 1991-02-20 1994-11-16 Dena Technology Mixing and homogenising apparatus
US7857247B2 (en) 2005-08-12 2010-12-28 Brian Sulaiman Milling system

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee