GB844949A - Process for making dispersions of solids in liquids - Google Patents

Process for making dispersions of solids in liquids

Info

Publication number
GB844949A
GB844949A GB1323657A GB1323657A GB844949A GB 844949 A GB844949 A GB 844949A GB 1323657 A GB1323657 A GB 1323657A GB 1323657 A GB1323657 A GB 1323657A GB 844949 A GB844949 A GB 844949A
Authority
GB
United Kingdom
Prior art keywords
mixing
hydrosol
acid
solution
whirling
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
GB1323657A
Inventor
James E Armstrong
William P Cummings
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.)
WR Grace and Co
Original Assignee
WR Grace and Co
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 WR Grace and Co filed Critical WR Grace and Co
Priority to GB1323657A priority Critical patent/GB844949A/en
Publication of GB844949A publication Critical patent/GB844949A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B05B7/149—Spray pistols or apparatus for discharging particulate material with separate inlets for a particulate material and a liquid to be sprayed
    • 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
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/141—Preparation of hydrosols or aqueous dispersions
    • C01B33/142—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates
    • C01B33/143—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates of aqueous solutions of silicates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)
  • Colloid Chemistry (AREA)

Abstract

A clear homogeneous silica hydrosol is produced by mixing a solution of an alkali metal silicate with an inorganic acid which comprises introducing into a mixing zone a stream of alkali metal silicate solution at a pressure and direction sufficient to create a whirling mass thereof, passing the whirling solution downwardly through a confined area in said zone to a mixing chamber having a restricted discharge port and introducing a finely divided stream of mineral acid into said chamber in a hollow conical pattern in contact with the whirling silicate solution said acid stream having an apparent pressure of at least 125 psia, thereby creating extreme turbulence within the mixing and resulting in an apparent pressure of at least 250 psia and collecting the resulting silica hydrosol. The sol contains 10-20% by weight of silica and the acid is introduced in amount slightly in excess of that necessary to neutralise silicate. The hydrosol can be discharged from the mixing zone under the surface of a bath of previously formed hydrosol. Specification 627,500 is referred to and the process may be used using the mixing nozzle described and claimed in Specification 844,950.
GB1323657A 1957-04-25 1957-04-25 Process for making dispersions of solids in liquids Expired GB844949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1323657A GB844949A (en) 1957-04-25 1957-04-25 Process for making dispersions of solids in liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1323657A GB844949A (en) 1957-04-25 1957-04-25 Process for making dispersions of solids in liquids

Publications (1)

Publication Number Publication Date
GB844949A true GB844949A (en) 1960-08-17

Family

ID=10019314

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1323657A Expired GB844949A (en) 1957-04-25 1957-04-25 Process for making dispersions of solids in liquids

Country Status (1)

Country Link
GB (1) GB844949A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1204634B (en) * 1961-08-07 1965-11-11 Orlita Kommanditgesellschaft Method and device for mixing liquids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1204634B (en) * 1961-08-07 1965-11-11 Orlita Kommanditgesellschaft Method and device for mixing liquids

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