The invention relates to a 
mineral processing process for 
processing mixed ore of magnetic 
iron ore and 
hematite-
limonite ore. The 
mineral processing process comprises steps as follows: raw ore containing the mixed ore of the magnetic 
iron ore and the 
hematite-
limonite ore is smashed and then subjected to two-stage continuous ore 
grinding; overflowing ore of a secondary classifying 
cyclone is subjected to two-stage low-intensity 
magnetic separation and one-stage fine screening and separation in combination of a single 
magnetic separation, fine screening and regrinding process for 
processing magnetic ore; under the condition of rougher ground ore particles, a part of undersize qualified 
magnetite concentrate products are firstly obtained, the other part of oversize products are combined with one-stage high-intensity 
magnetic separator concentrate and two-stage low-intensity 
magnetic separator tailings to serve as middlings, and the middlings are subjected to three-stage ore 
grinding classification operation for regrinding and separation; and overflowing ore of a 
tertiary classifying 
cyclone is subjected to three-stage low-intensity 
magnetic separation and high-intensity magnetic separation, fine-grain qualified 
tailings are thrown again, three-stage low-intensity magnetic concentrate and two-stage high-intensity magnetic concentrate are combined to obtain mixed magnetic concentrate, the mixed magnetic concentrate is subjected to a 
reverse flotation process for separation, and a qualified flotation concentrate product is obtained. According to the 
mineral processing process, the mixed ore of the magnetic 
iron ore and the 
hematite-
limonite ore with different 
dissemination particle sizes is reasonably processed, the qualified iron 
ore concentrate product is obtained, and the mineral 
processing process is economical, energy-saving and environment-friendly.