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    Beneficiation of magnesian ores or the like
    21.
    发明授权
    Beneficiation of magnesian ores or the like 失效
    MAGNESIAN ORES或类似的受益者

    公开(公告)号：US3578162A

    公开(公告)日：1971-05-11

    申请号：US3578162D

    申请日：1969-10-01

    Applicant: BASIC INC

    Inventor： JEPSEN TAGE L B

    IPC: C01F5/14 ,  C01F5/24 ,  B03B3/44

    CPC classification number: C01F5/14 ,  C01F5/24

    Abstract: Beneficiation of magnesian ores and similar derivative mixtures for concentrating or upgrading the magnesium content, usually by removal of the undesired constituents. Such mixtures after size reduction to obtain desired liberation of constituents are subjected to float and sink separations in heavy media having a gravity intermediate the float and sink constituents. Mixtures include magnesite, brucite, hydromagnesite and dolomite ores and synthetic mixtures of CaCO3 and hydrated magnesium carbonates with tetrabromoethane, methylene bromide, trichloroethylene, carbon tetrachloride and methylene iodide as heavy media diluted with lighter organic liquids as necessary to establish optimum specific gravity. Movement of material in separation zone causes lighter fraction to float to surface of media while heavier fraction penetrates media and is recovered as an underflow product.

    Flotation concentration of magnesite with emulsified collector reagents
    27.
    发明授权
    Flotation concentration of magnesite with emulsified collector reagents 失效
    具有乳化收集器试剂的镁合金的浮选浓度

    公开(公告)号：US3640382A

    公开(公告)日：1972-02-08

    申请号：US3640382D

    申请日：1970-02-04

    Applicant: BASIC INC

    Inventor： JEPSEN TAGE L B

    IPC: B03D1/02 ,  B03B7/00

    CPC classification number: B03D1/02

    Abstract: Concentration of magnesite present in ores containing siliceous and calcareous impurities and having some clay slimes as impurities by first reducing the slimes content of a magnesite ore pulp. cleaning same in a first flotation treatment wherein some of said impurities are separated as a float product, mixing a selected group of depressants for said siliceous and calcareous impurities in predetermined proportions in a liquid carrier, adding the premixed depressants to the cleaned pulp feed to a second flotation treatment at a predetermined rate, and stage adding an emulsifiable tall oil fatty acid collector reagent of low rosin content in starvation amounts at intervals in the progressive pulp flow through the second flotation treatment thereby floating a portion of the total magnesite content at each introduction stage.

    Abstract translation: 存在于含有硅质和钙质杂质的矿石中的菱镁矿的浓度，并且通过首先降低菱镁矿浆的泥质含量，并且具有一些粘土泥作为杂质。 在第一浮选处理中进行清洗，其中将一些所述杂质作为浮法产物分离，将所选择的一组用于所述硅质和钙质杂质的抑制剂以预定比例混合在液体载体中，将预混合的抑制剂加入到清洁的纸浆进料中 以预定速率进行第二次浮选处理，并且通过第二浮选处理在渐进式纸浆流中间歇地加入具有低松脂含量的可乳化的妥尔油脂肪酸收集剂，其中所述乳化剂具有低的松香含量，从而在每次引入时漂浮一部分总的菱镁矿含量 阶段。

    Refractory composition and method for the production of ceramically bonded refractories
    28.
    发明授权
    Refractory composition and method for the production of ceramically bonded refractories 失效
    用于生产陶瓷粘结耐火材料的耐火材料组合物和方法

    公开(公告)号：US3632360A

    公开(公告)日：1972-01-04

    申请号：US3632360D

    申请日：1969-01-24

    Applicant: BASIC INC

    Inventor： LUFCY GLENN H

    IPC: C04B35/03 ,  C04B35/04 ,  C04B35/06

    CPC classification number: C04B35/03

    Abstract: In producing ceramically bonded basic refractories, the basic refractory particles are bonded together with a temporary binder. The temporary binder includes a pitch which may be a tall oil pitch or a fatty acid pitch and an asphalt binder oil.

    Abstract translation: 在制造陶瓷接合的基础耐火材料时，用临时粘合剂将基本耐火材料颗粒粘结在一起。 临时粘合剂包括可以是妥尔油沥青或脂肪酸沥青的沥青和沥青粘合剂油。

    Pressure sealed rotary feeder
    29.
    发明授权
    Pressure sealed rotary feeder 失效
    压力密封旋转进料器

    公开(公告)号：US3556355A

    公开(公告)日：1971-01-19

    申请号：US3556355D

    申请日：1968-05-28

    Applicant: BASIC INC

    Inventor： RUIZ JOSEPH J

    IPC: B65B37/08 ,  G01F11/10

    CPC classification number: B65B37/08

    Abstract: A pressured sealed rotary feeder with an inlet and outlet and a rotor mounted within a housing with a material passage therethrough. The rotor has a plurality of radially extending vanes which define material transporting compartments therebetween. Sealing means are mounted in each of the vanes of the rotor and include a movable blade which extends transversely of the vane and has a surface in contact with the interior of the passage. The surface is maintained in contact with the interior of the passage by fluid under pressure which is introduced through a passageway within the rotor and the vanes. The surface in contact with the passage is preferably of a heat resistant, self-lubricating plastic such as polytetrafluoroethylene.

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