Flotation reagent system for fine wolframite in gravity concentration tailings

• Main Authors: YU XUE, CHEN XINLIN, MA YANQUAN, MA ZHONGCHEN, YANG CHANGYING, LYU JIAHUA
• Format: Patent
• Language: English
• Published: 10.02.2016
• Subjects: DIFFERENTIAL SEDIMENTATION; FLOTATION; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; PERFORMING OPERATIONS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TRANSPORTING

A flotation reagent system for fine wolframite in gravity concentration tailings is characterized in that 1, a gravity concentration tailing sample is put into a stirring tank, the concentration of ore pulp is controlled, sodium carbonate is added, the pH value of the ore pulp is controlled, and the mixture is stirred; 2, a gangue inhibitor and a fine silt dispersant are added and stirred; 3, a lead nitrate activator for the wolframite is added and stirred; 4, TW-705 serving as a collecting agent, kerosene serving as an auxiliary collecting agent and terpenic oil serving as a foaming agent are added and stirred; 5, the process flow path of carrying out rough concentration once, concentration twice and scavenging twice is adopted in tungsten flotation, the time for rough concentration is 5 min, the time for first-time scavenging and the time for second-time scavenging are 3 min, sodium silicate, a TW-705 and kerosene mixed collecting agent and terpenic oil are added in first-time scavenging, and the time for first-time concentration and the time for second-time concentration are 3 min and 2 min respectively. Tungsten concentrate is obtained through sorting. The tungsten grade of the fine wolframite in the gravity concentration tailings is improved, the tungsten recovery rate of the fine wolframite in the gravity concentration tailings is increased, and fine-fraction tungsten resources can be efficiently recovered.