The method of zinc oxide ore beneficiation, after grinding, lead oxide after the flotation, the flotation tailings lead fines rougher stage 1-3, each stage for 1-3 times rougher concentrate choice, select the crude After the mine and the first selected medium ore enter the next stage of rough selection, the fine grain flotation is carried out to obtain the concentrate. It is aimed at the floating characteristics of the granulated zinc oxide ore after floating small particles, which fundamentally solves the problem that the prior art is difficult to float the shale zinc oxide ore. It can not only be selected from the shale zinc oxide ore. The zinc mine, but also increased the recovery rate of zinc oxide ore, reduced the amount of zinc oxide in tailings, reduced the consumption of flotation agent, and effectively utilized the mineral resources of argillaceous zinc oxide ore. Zhejiang Shengfa Textiles Printing&Dyeing.,ltd , https://www.chzjsf.com
Sovereignty 1. A method for mineral processing of zinc oxide ore, including the following process steps:
A. Grinding the argillaceous zinc oxide ore to make the particle size of -0.1mm account for 50% to 80%;
B. Grading the finely ground slurry to carry out flotation of lead oxide;
C. The lead flotation tailings are sent to the mixing tank, the concentration of the pulp is controlled at 25~35%, the flotation agent is added, the pH value of the pulp is controlled to 9-11, and the stirring is 6-15 min;
D. The above-mentioned slurry is sent to the flotation tank for coarse-graining of 1-3 grades, and each grade of coarse ore concentrate is selected 1-3 times, and the rough-selected ore is selected into the next-stage rough selection, specifically: the mud is less than 16% of the slurry is subjected to coarse selection of 6-8 minutes, coarse selection of concentrate is carried out 1-3 times and each time 1-2 minutes of selection, the concentrate product is obtained, 1 selected medium mine and rough selected mine enters and takes off Mud; 17-21% slurry containing mud for secondary selection and 5-7min rough selection for each stage, each grade of coarse ore concentrate is selected 1-3 times and each time 1-2min selection, to obtain concentrate products, the first The second-grade one-time selection of the middle ore and the second-stage rough-selected ore enters the de-sludge; the 22-26% of the slurry containing the mud is subjected to the third-stage and the coarse selection of each stage is 4-6 minutes, and the coarse-concentrated concentrate of each stage is carried out for 1-3. After the selection of 1-2 min each time, the concentrate product, the third-stage selected medium mine and the third-level rough-selected mine enter the de-sludge;
E. The D-step fine-grained flotation is sent to the hydrocyclone group below Φ150mm or the high-frequency fine sieve to remove the mud, remove the fine mud below -0.074mm, send the mixing tank, and control the slurry concentration 25 - 35%, supplement the flotation agent, control the pH value of the slurry 9-11, stir for 5-12min, and send it to the flotation tank;
F. 8-14 min coarse coarse selection in the flotation tank, coarse selection of concentrate for 1-3 times and 2-3 min each selection, to obtain concentrate products, rough selection of mines 1-3 sweeps selected to obtain tailings; wherein the flotation agent is added following agents: iron gangue flotation of zinc anodized inhibitors used were: sodium silicate 500 ~ 1500g / t calcium lignosulfonate or sodium humate ~ 150 The gangue inhibitor used in 500g/t flotation siliceous zinc oxide ore is: water glass 1000～3000g/t ferrous sulfate 300～500g/t calcium lignin sulfonate or sodium humate 150～500g/t activator Sodium sulfide 5～9kg/t Compound 18 primary amine main collector 18 primary amine 160～420g/t acetic acid 50～100g/t hydrocarbon oil 60～250g/t pine oil 60～250g/t butyl ammonium black medicine 30～80g/t Opacified auxiliary collector butyl ammonium black drug 40～150g/t Hydrocarbon oil 40～100g/t Emulsifier 40～100g/t or Butyl xanthate 50～150g/t Butyl ammonium black drug 30～ 80g / t hydrocarbon oil 40 ~ 100g / t emulsifier 40 ~ 100g / t.