Stabilizer for controlling heavy metal pollution of copper ore mill tailings

The invention relates to a stabilizer for controlling heavy metal pollution of copper ore mill tailings, which can effectively solve the problem of heavy metal pollution of copper ore mill tailings. The stabilizer comprises a basic component A and a reinforcing component B, wherein the basic component A comprises 35%-50% of polyaluminum ferric chloride, 5%-10% of polyferric sulfate, 20%-50% of calcium hydroxide, 10%-30% of calcium carbonate and 0.1%-2.0% of ferric oxide; the strengthening component B is sodium silicate. Uniformly mixing polyaluminum ferric chloride, polyferric sulfate, calcium hydroxide, calcium carbonate and ferric oxide, and activating to obtain the basic component A; and the strengthening component B is prepared into an aqueous solution with the concentration of 0.1-3.0% for use. The raw materials are rich, the cost is low, the heavy metal pollutants in the copper mine tailings containing the heavy metal pollutants such as copper, lead, zinc, cadmium and arsenic can be solidified and stabi