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    Process for producing readily dispersible sio2 and al2o3 solids
    4.
    发明授权
    Process for producing readily dispersible sio2 and al2o3 solids 失效
    用于生产易分散的sio2和al2o3固体的方法

    公开(公告)号：US3223482A

    公开(公告)日：1965-12-14

    申请号：US38920564

    申请日：1964-08-12

    Applicant: CA NAT RESEARCH COUNCIL

    Inventor： PUDDINGTON IRA E ,  SIRIANNI AURELIO F

    IPC: B01J2/30 ,  C01B33/113 ,  C01B33/18 ,  C08K9/04 ,  C08K9/08 ,  C09C1/28 ,  C09C1/30 ,  C09C1/40 ,  C09C3/00 ,  C09C3/08

    CPC classification number: B82Y30/00 ,  B01J2/30 ,  C01B33/113 ,  C01B33/18 ,  C01P2002/02 ,  C01P2004/32 ,  C01P2004/50 ,  C01P2004/64 ,  C01P2006/10 ,  C01P2006/11 ,  C01P2006/20 ,  C01P2006/22 ,  C08K9/04 ,  C08K9/08 ,  C09C1/309 ,  C09C1/407 ,  C09C3/006 ,  C09C3/043 ,  C09C3/063 ,  C09C3/08 ,  C09C3/10 ,  C10M5/00 ,  C10M2201/00 ,  C10M2201/061 ,  C10M2201/14 ,  C10M2201/16 ,  C10M2201/18 ,  C10M2203/00 ,  C10M2207/021 ,  C10M2207/022 ,  C10M2207/18 ,  C10M2207/282 ,  C10M2207/289 ,  C10M2207/34 ,  C10M2207/40 ,  C10M2207/404 ,  C10M2215/042 ,  C10M2215/102 ,  C10M2219/044 ,  C10M2223/10 ,  C10N2250/10 ,  C10N2250/121 ,  C10N2260/04 ,  C08L21/00

    Abstract: Greases comprise lubricating oils thickened with silica or alumina having a particle size of 5-30 mm coated with a surfactant selected from sorbitan monostearate, polyoxyethylene propyleneglycol monostearate, polyoxyethylene sorbitan tristearate, triethanolamine linoleate, lecithin, alkyl phenol-polyoxyethylene ether adducts of M.Wt. 800-2000, ammonium hydrocarbon sulphonate, a complex having a M.Wt. of less than 2000 of urea and an aliphatic or cycloaliphatic carboxylic acid having 8-22 carbon atoms, or the reaction product in situ of NH4OH and a tall oil acid, lauric acid or oleic acid, of (NH4)2CO3 and palmitic acid, or of urea and an oxidized hydrocarbon oil. The urea complex may be the reaction product of urea and a tall oil acid, oleic, or naphthenic acids. The coating may also contain up to 600 parts of an extender selected from hydrocarbon oils, oxidized hydrocarbon oils, vegetable oils, esters of dibasic acids, polyglycol ethers, and alcohols, having at least 8 carbon atoms (examples are listed). Ammonia and/or glycerol may also be present.ALSO:Silica or alumina having a particle size of 5-30 mm is coated with 10-600 parts by wt. per 100 pts. of the solid of a surfactant selected from sorbitan monostearate, polyoxyethylene propyleneglycol monostearate, polyoxyethylene sorbitan tristearate, triethanolamine linoleate, lecithin, alkyl phenol-polyoxyethylene ether adducts of M.Wt. 800-2000, ammonium hydrocarbon sulphonate, a complex having a M.Wt. of less than 2000 of urea and an aliphatic or cycloaliphatic carboxylic acid having 8-22 carbon atoms, or the reaction product in situ of NH4OH and a tall oil acid, lauric acid, or oleic acid, of (NH4)2CO3 and palmitic acid, or of urea and an oxidized hydrocarbon oil. The urea complex may be the reaction product of urea and a tall oil acid, oleic, or naphthenic acids. The coating may also contain up to 600 parts of an extender selected from hydrocarbon oils, oxidized hydrocarbon oils, vegetable oils, esters of dibasic acids, polyglycol ethers, and alcohols having at least 8 carbon atoms (examples are listed). Ammonia and/or glycerol may also be present. The initial aquasol or gel may be made from Na silicate or aluminate by treatment with H2SO4, HCl, H3PO4 or HAc, or by electrodialysis or ion-exchange. The sol or gel may be mixed with the coating materials in a colloid mill or by stirring, and water may be evaporated off by heating with agitation or by drum drying, or may be frozen out. The surfactant may then be volatilized, leaving the extender coating, which may be modified, e.g. by oxidation. The coated particles are readily dispersed in paints, rubbers, lubricant greases, varnishes, carrier dusts and floor waxes.

    Apparatus for settling fluid suspensions
    5.
    发明授权
    Apparatus for settling fluid suspensions 失效
    用于沉降液体悬浮液的装置

    公开(公告)号：US2868384A

    公开(公告)日：1959-01-13

    申请号：US52411955

    申请日：1955-07-25

    Applicant: CA NAT RESEARCH COUNCIL

    Inventor： PUDDINGTON IRA E

    IPC: B01D21/00

    CPC classification number: B01D21/0063 ,  B01D21/0039 ,  B01D21/0045 ,  B01D21/02 ,  B01D21/2416 ,  B01D21/2427 ,  B01D21/2461

    Abstract: 804,167. Gravity separating apparatus. NATIONAL RESEARCH COUNCIL. April 5, 1956 [July 25, 1955], No. 10450/56. Class 46. In an apparatus for removing solid particles or fluid from fluid suspensions, chamber 4 is inclined at an angle between 40 to 60 degrees to the horizontal and the ratio of the angular or slant height to the width of the chamber is not less than 8, but preferably not less than 40. The suspension is fed to chamber 4 1 and passes in a horizontal direction through a diffusion plate 5 to the chamber 4. An outlet 6 for the light component is provided at the other end of the container and means, such as a conveyer 7, are provided to discharge the heavy component through an outlet 10. The container may have a plurality of such chambers and the discharge outlet for the heavier component may be situated at the bottom of the container. Specification 753,646 is referred to.

    PROCESS FOR SEPARATION OF SILICEOUS AND PHOSPHATIC MATERIAL FROM IRON BODIES
    10.
    发明专利
    PROCESS FOR SEPARATION OF SILICEOUS AND PHOSPHATIC MATERIAL FROM IRON BODIES 未知

    公开(公告)号：CA872730A

    公开(公告)日：1971-06-08

    申请号：CA872730D

    申请日：1968-06-07

    Applicant: CA NAT RESEARCH COUNCIL

    Inventor： SIRIANNI AURELIO F ,  PUDDINGTON IRA E

    IPC: B03D1/02

    Abstract: Siliceous and phosphatic material is separated from iron ore by subjecting a finely ground body of such ore in aqueous suspension to treatment with a conditioning agent which causes selective species in the ore body to become hydrophobic, and a hydrocarbon oil is employed with agitation to cause preferential agglomeration of the hydrophobic particles. Water may be added during the treatment to decrease the pulp density. There is thus formed a densely packed phase agglomerated by the oil, and a residual aqueous phase, the oil phase being rich in P or iron and the other phase being rich in iron or phosphorous, respectively. These agglomerates are easily separated to recover the desired products. The pH of the mixture is suitably adjusted during the treatment and separation steps for most effective results by additions of certain acids and alkalis.

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