21.
    发明专利
    未知

    公开(公告)号:BR9205582A

    公开(公告)日:1994-08-02

    申请号:BR9205582

    申请日:1992-12-02

    Abstract: A reactor for aerating a fluid with a gas comprises a mixing tank (12) for the fluid and a centrally located vertical draft tube (13) submerged in the fluid to divide the mixing tank (12) into an inner chamber (21) and an outer chamber (23). The reactor further comprises a motor driven axial flow impeller (14) located in the draft tube (13) for circulating fluid downwardly through the inner chamber (21) and upwardly through the outer chamber (23). The reactor further comprises an external circuit for withdrawing a portion of the fluid from the mixing tank (12), aerating the fluid, and returning the aerated fluid to the mixing tank (12). The aerator is in the form of a venturi device (17).

    24.
    发明专利
    未知

    公开(公告)号:BRPI0808672A2

    公开(公告)日:2014-08-12

    申请号:BRPI0808672

    申请日:2008-03-06

    Abstract: A method of separating potassium chloride and sodium chloride from a heated solution of these salts, such as a solution obtained from potash ore, to recover potassium chloride from the ore is disclosed. The method includes a combination of steps of (a) extracting water from a heated solution containing potassium chloride and sodium chloride using a membrane system and (b) subsequently cooling the solution discharged from the membrane system, whereby steps (a) and (b) make it possible to selectively recover potassium chloride and sodium chloride from the solution.

    MICROWAVE TREATMENT OF ORES
    26.
    发明专利

    公开(公告)号:CA2487743C

    公开(公告)日:2011-05-24

    申请号:CA2487743

    申请日:2003-05-30

    Abstract: A method of treating ore particles to facilitate subsequent processing of the ore particles to recover valuable components from the ore is disclosed. The method includes exposing the ore particles to microwave energy and causing structural alteration of the ore particles. In one embodiment structural alteration is achieved without significantly altering the mineralogy, ie composition, of the ore. In another embodiment structural alteration is achieved with minimal change to the sizes of the ore particles. In another embodiment the method includes exposing the ore particles to short duration, high energy pulses of microwave energy.

    A DIRECT SMELTING PROCESS
    27.
    发明专利

    公开(公告)号:CA2320654C

    公开(公告)日:2010-05-11

    申请号:CA2320654

    申请日:2000-09-26

    Abstract: A direct smelting process and a fixed, ie non--rotatable, metallurgical vessel for producing metal from a metalliferous feed material is disclosed. The process is a molten bath-based process which includes injecting solid feed materials with a carrier gas into the molten bath via one or more downwardly extending lance/tuyere (11) and causing gas flow from the molten bath at a flow rate of at least 0.30 Nm3/s/m2 at the interface between the metal layer (15) and the slag layer (16) of the molten bath (under quiescent conditions).

    A METHOD OF TREATING POTASH
    28.
    发明专利

    公开(公告)号:CA2680182A1

    公开(公告)日:2008-09-12

    申请号:CA2680182

    申请日:2008-03-06

    Abstract: A method of separating potassium chloride and sodium chloride from a heat ed solution of these salts, such as a solution obtained from potash ore, to recover potassium chloride from the ore is disclosed. The method includes a combination of steps of (a) extracting water from a heated solution containi ng potassium chloride and sodium chloride using a membrane system and (b) su bsequently cooling the solution discharged from the membrane system, whereby steps (a) and (b) make it possible to selectively recover potassium chlorid e and sodium chloride from the solution.

    29.
    发明专利
    未知

    公开(公告)号:DE60024550D1

    公开(公告)日:2006-01-12

    申请号:DE60024550

    申请日:2000-09-26

    Abstract: A direct smelting process and a fixed, ie non-rotatable, metallurgical vessel for producing metal from a metalliferous feed material is disclosed. The process is a molten bath-based process which includes injecting solid feed materials with a carrier gas into the molten bath via one or more downwardly extending lance/tuyere (11) and causing gas flow from the molten bath at a flow rate of at least 0.30 Nm /s/m at the interface between the metal layer (15) and the slag layer (16) of the molten bath (under quiescent conditions).

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