The invention belongs to the field of
resource recovery treatment, and provides a treatment and
recovery process for
magnetic separation of waste high-temperature
alloy, the treatment and
recovery process comprises the following steps: carrying out
magnetic separation on the high-temperature
alloy to obtain high-iron low-
nickel magnetic concentrate and high-
nickel low-iron magnetic
tail; the magnetic concentrate and the magnetic
tail are respectively leached, the magnetic concentrate is subjected to high-temperature and high-pressure
iron removal after being leached, then the pH is adjusted for
impurity removal, the pH can be directly adjusted for
impurity removal after the magnetic
tail is leached, and filtrate obtained after pH adjustment and
impurity removal is combined and can be used for extracting
nickel and
cobalt. The high-temperature
alloy is divided into magnetic
tailings and magnetic concentrates through
magnetic separation, so that the problem of low
leaching rate of direct leaching of all high-temperature alloy
powder is effectively solved; the cost can be effectively reduced only by performing high-temperature and high-pressure
iron removal on the magnetic concentrate; and the magnetic concentrate and the magnetic tail are respectively subjected to leaching and pH adjustment for impurity removal, so that compared with
direct treatment of all high-temperature alloy
powder, the used acid solution and precipitator are effectively reduced, the
coprecipitation rate of nickel is reduced, and the yield of nickel is improved.