开放磁系永磁强磁选机用于钛铁矿分选研究

Research of Permanent Magnet High Intensity Magnetic Separator with Open Magnetic System on Ilmenite

强磁选-浮选工艺逐渐成为原生钛铁矿分选的主体流程,但现有高梯度强磁选机精矿夹杂较严重,脉石矿物钛辉石易进入浮选流程影响浮选效果。分析了钛铁矿高梯度磁选过程中脉石夹杂机理,指出高梯度磁场力难以调控、脉石难以脱离是影响强磁选效果的主要原因。提出了采用开放磁系永磁强磁选机分选钛铁矿的技术尝试,研制了永磁强磁选机试验样机,分选区磁场力达到钛铁矿捕收要求,同时易于抛出钛辉石等弱磁性脉石矿物,经试验验证可以提高高梯度磁选产品的TiO2品位。

High intensity magnetic separation and flotation process gradually become the main process for primary ilmenite separation.Concentrate of current high gradient magnetic separator is impuritycontaining seriously.Gangue mineral such as Titanaugite can easily enter the flotation process and affect the flotation.The paper analyzed mechanism of gangue inclusion in high gradient magnetic separation process for ilmenite.It pointed out that main reason of affecting the effect of high gradient magnetic separation is bad regulation magnetic field force and hardly exposed gangue.The paper put forward that using permanent magnet high intensity magnetic separator with open magnetic system separating ilmenite.It developed an experiment device of permanent magnet high intensity magnetic separator.Magnetic field force in separation area meet the requirements for ilmenite capture.Also,the magnetic field made it easy for throwing out weak magnetic gangue such as Titanaugite.It turns out that the device can improve ilmenite grade of high gradient magnetic separation product.