Weathering molding sand ilmenite selected combinations magnetic separation process

Weathering molding sand ilmenite selected combinations magnetic separation process

  • CN 104,174,486 B
  • Filed: 07/16/2014
  • Issued: 10/25/2019
  • Est. Priority Date: 07/16/2014
  • Status: Active Grant
First Claim
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1. weathering molding sand ilmenite selected combinations magnetic separation process, which is characterized in that the weathering molding sand ilmenite raw ore enters selectionPosition are as follows:

  • TiO26.74%, Fe1-7%, titanium are the main recycle objects of ore dressing, iron can comprehensive reutilization,Main useful titanium mineral is ilmenite in raw ore, and iron mineral is titanomagnetite;

    Main gangue mineral is kaolinite, fewLimonite, chlorite and quartz, feldspar are measured,The combination magnetic separation process includes the following steps;

    (1) slurrying;

    with hydraulic giant back production weathered ore and slurrying gravity flow or screening is pumped to fresh water pump;

    (2) screening throwing is given up;

    two-stage screening throwing, which carried out, with the sieve of the sieve in the aperture 8~30mm and the aperture 0.8~1.4mm respectively gives up,Unweathered rock and sundries, which separate, makees waste material;

    (3) strong magnetic throws tail;

    having upper magnetic characteristic of different strengths and weaknesses, combined application Ferromagnet machine and strong magnetic titanium machine according to ferrotitanium, benefitWith magnetism intensity in the Ferromagnet machine of 2000~4000 Gausses, the iron in ore pulp is first isolated, then with magnetic pole strength 8000~15000The magnetic titanium machine of Gauss isolates the titanium in ore pulp, is 90~150 cubes ms/h into every Ferromagnet machine flow, into everyThe flow of magnetic titanium machine is 9-15 cubes m/h, extracts in raw ore slurry the mineral of all upper magnetic and sand grains mine to sedimentation basin with this,Silt is abandoned simultaneously;

    Step (3) the combined application Ferromagnet machine and strong magnetic titanium machine are by 1 Ferromagnet machine with 5-10 platform magnetic titanium unitClose application;

    (4) thin mine is first received;

    using sand pump in sedimentation basin mineral and sand grains mine be pumped to high frequency shale shaker, screen out granularity 40The thin ore in sand form of~200 purposes is directly entered an essence two and scans;

    Granularity enters ball mill less than the rough sand of 40 purposes, then sieves;

    It is describedStep (4) medium-high frequency Vibration Screen screen distance is 0.425~0.075mm, and control frequency is 1400 beats/min;

    Into high frequency vibratingThe mineral slurry flux of dynamic sieve is 40 to 60 cubes ms/h;

    (5) coarse grain is regrinded;

    combined application high frequency shale shaker and ball mill, and it is direct will to screen out the thin ore in sand form of 40~200 purpose of granularityIt is scanned into an essence two;

    Granularity enters ball mill less than the rough sand of 40 purposes, then sieves, and the ore pulp water content into ball mill canControl, using screening, isolates the thin ore in sand form of 40~200 purpose of granularity after 10~40%, ball mill grinding;

    The step (5)Combined application high frequency shale shaker and ball mill be by 1 table grinder with 1 high frequency shale shaker combined application;

    (6) one essences two are scanned;

    " one essence " the thin ore in sand form of 40~200 purpose of granularity will be isolated by referring to sorts tapping through Ferromagnet machine, thenThe sundries in de-iron further is removed with Ferromagnet machine, obtains iron ore concentrate;

    Ore pulp after Ferromagnet machine separates tapping is again by magnetic titanium machineSub-elect titanium, " two sweep ", which refers to, further uses magnetic titanium machine to recycle the tail water after " one essence ", with this isolate iron ore concentrate and 40% to45% titanium ore, sand, sulphur, phosphorus, arsenic, calcium, magnesium waste material reject;

    The Ferromagnet machine and magnetic titanium machine of the step (6) are by 1 Ferromagnet machineIt is a unit combined application with 5-10 platform magnetic titanium machine;

    (7) dry selected;

    by 40% to 45% titanium ore using dryer or natural drying, dry magnetomechanical, further circulation is removed sand, and is obtainedTo the ilmenite concentrate of 46% to 52% grade.

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