The invention relates to a method for manufacturing alkaline
magnesium-rich pellet ore. The method comprises the steps of I pretreatment of recycled waste magnesia-
calcium bricks, wherein a, primary breaking is carried out, and the waste magnesia-
calcium bricks are broken into magnesia-
calcium brick blocks; b, fine
grinding is carried out, and the magnesia-calcium
brick blocks are ground into magnesia-calcium
brick powder; II batching, wherein iron concentrate
powder and the magnesia-calcium brick
powder are batched into batch mixtures, and 5.5-6.6 parts of the magnesia-calcium brick powder, 100 parts of the iron concentrate powder, 0.5-1 part of pulverized
coal and 1.7 parts of
bentonite are adopted according to the ratio; III pretreatment of the batch mixtures, wherein roll
grinding is carried out on the batch mixtures; IV mixing, wherein the batch mixtures obtained through roll
grinding are mixed; V
pelletizing and screening, wherein
mixed materials are pelletized and screened into qualified green
pellets; VI
drying, preheating and
calcination, wherein the qualified green
pellets are calcinated into pellet ore; VIII cooling, wherein the pellet ore is cooled to obtain the alkaline
magnesium-rich pellet ore. The alkaline
magnesium-rich pellet ore is produced through the waste magnesia-calcium bricks, the
quaternary alkalinity of the pellet ore can be above 1.15%, and MgO is larger than or equal to 3.8%.