中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

21 records (took 0.024 seconds)

    TREATMENT OF FINE TAILINGS
    2.
    发明申请
    TREATMENT OF FINE TAILINGS 审中-公开
    处理尾矿

    公开(公告)号：WO2014111884A1

    公开(公告)日：2014-07-24

    申请号：PCT/IB2014/058347

    申请日：2014-01-17

    Applicant: BASF SE ,  BASF CANADA INC. ,  BASF (CHINA) COMPANY LIMITED

    Inventor： BEVERIDGE, Angela ,  RAMSAY, John ,  MENDEZ, Pablo

    IPC: C02F1/56

    CPC classification number: C10G1/045 ,  C02F1/36 ,  C02F11/121 ,  C02F11/14 ,  C02F2103/10 ,  C02F2103/365

    Abstract: A process of dewatering a suspension comprising particulate solids dispersed in an aqueous liquid is provided. The particulate solids comprise clay and mineral particles of size below 50 μπι. The process comprises the steps of, (a) subjecting the suspension to a kinetic energy stage to produce a modified suspension; (b) addition of a water-soluble polymer intrinsic viscosity of at least 3 dl/g to the modified suspension of step (a); (c) dewatering the treated suspension of step (b), in which the kinetic energy stage is a shearing stage and/or application of ultrasonic energy to the suspension, wherein the shearing stage comprises subjecting the suspension to shearing employing a shearing device. The process is particularly suited to dewatering of mature fine tailings derived from oil sands tailings.

    Abstract translation: 提供了一种使包含分散在水性液体中的固体颗粒的悬浮液脱水的方法。 颗粒状固体含有尺寸小于50微米的粘土和矿物颗粒。 该方法包括以下步骤：（a）使悬浮液经受动能阶段以产生改性悬浮液; （b）向步骤（a）的改性悬浮液中加入至少3dl / g的水溶性聚合物特性粘度; （c）将处理​​的步骤（b）的悬浮液脱水，其中动能阶段是剪切阶段和/或向悬浮液施加超声能量，其中剪切阶段包括使用剪切装置对悬浮液进行剪切。 该方法特别适用于从油砂尾矿衍生的成熟细尾矿的脱水。

    APPARATUS AND PROCESS FOR AUTOMATICALLY TAKING UP A CONTINUOUSLY SUPPLIED YARN
    4.
    发明专利
    APPARATUS AND PROCESS FOR AUTOMATICALLY TAKING UP A CONTINUOUSLY SUPPLIED YARN 未知

    公开(公告)号：CA1328443C

    公开(公告)日：1994-04-12

    申请号：CA579551

    申请日：1988-10-07

    Applicant: BASF CANADA INC

    Inventor： HORSEY ROBERT W ,  PILON LAURENT C ,  FLETCHER GRANT M ,  HORNER ARLAND W

    IPC: B65H67/044

    Abstract: APPARATUS AND PROCESS FOR AUTOMATICALLY TAKING UP A CONTINUOUSLY SUPPLIED YARN An automatic transfer device and process enable the transferring of a continuously supplied yarn from a first take-up tube (which usually has a full package thereon) to a second take-up tube, which has usually no yarn thereon. In carrying out this process, the apparatus automatically cuts and aspirates the continuously supplied yarn, and an actuator arm applies the yarn to the second take-up tube by moving the continuously-supplied yarn into contact with a yarn snagging device.

    USE OF MICROWAVE ENERGY IN THE PRODUCTION OF PLASTICIZER ESTERS
    5.
    发明专利
    USE OF MICROWAVE ENERGY IN THE PRODUCTION OF PLASTICIZER ESTERS 未知

    公开(公告)号：CA1127999A

    公开(公告)日：1982-07-20

    申请号：CA353929

    申请日：1980-06-12

    Applicant: BASF CANADA INC

    Inventor： BHARGAVA NARESH

    IPC: C07C67/08 ,  B01J1/10

    Abstract: The invention is concerned with an improved process of preparing plasticizer esters by reacting aliphatic or aromatic dicarboxylic or tricarboxylic acids or their anhydrides and aliphatic alcohols of 1 to 15 carbon atoms while continuously removing the water of reaction, wherein the improvement comprises carrying out the esterification under irradiation with microwaves. The invention provides an esterification process which has very short reaction times achieves high conversion of reactants, reduces the degradation of materials and results in products having significantly low contents of free alcohol and moisture. In particular, it has been found that the use of microwaves in the production of plasticizer esters has the effect of accelerating the rate of reaction considerably.

Patent Agency Ranking