Process for recycling copper and sulfur in high-sulfur low-grade copper ore by discarding tailings in advance

• Main Authors: SUN JIANXI, HAO WENLONG, ZHANG LIANG, CHEN HU, MA YUSHUN, FU HAITAO, GENG LIHUI, ZHANG ZUOJIN
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2024
• Subjects: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; PERFORMING OPERATIONS; SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TRANSPORTING

The invention relates to a process for recycling copper and sulfur in low-grade copper ore by discarding tailings in advance, which comprises the following steps of: crushing the low-grade copper ore, performing magnetic separation on 0.3 mm oversize material by using a magnetic separator to obtain magnetic concentrate and magnetic tailings, and reselecting the magnetic tailings by using a jigging machine to obtain jigging concentrate and jigging tailings; jigging concentrate and magnetic separation concentrate are mixed and then are subjected to ore grinding together with undersize materials through a ball mill, the materials obtained after ore grinding are subjected to copper separation preferentially and then subjected to sulfur separation flotation operation, a sulfur inhibitor, 2 # oil and Z200 are added in the copper separation operation for copper roughing, the pH value of ore pulp is 8-8.5, and copper concentrate is obtained through primary copper concentration, secondary copper concentration and thir