Simple beneficiation method for chalcocite-containing coarse-grain disseminated copper sulphide ore

The invention relates to a simple beneficiation method of chalcocite-containing coarse-grain disseminated copper sulphide ore, which is characterized in that graphite is used for replacing a copper selection collecting agent in flash flotation and graded overflow flotation stages to improve the selective adsorption capacity of coarse-grain minerals, a flotation machine for copper selection is changed into a flotation column, and the method comprises the following steps: ore grinding: adding calcium oxide into raw ore a added into a ball mill for ore grinding; grading: grading the ore grinding product b to obtain ore pulp overflow d and ore pulp settled sand c; flash flotation is carried out, specifically, the settled sand c is subjected to flash flotation, especially coarse-fraction ore is directly discharged from a tailing opening, the proper-fraction ore is subjected to flash flotation, graphite and 2 # oil are added, and product copper concentrate 1e and tailings f are obtained; conventional flotation is c