Method for pretreating indium-containing zinc oxide acid supernatant
A zinc oxide and pretreatment technology, applied in the direction of improving process efficiency, etc., can solve the problems of high impurity content and inability to carry out extraction, and achieve the effects of improving indium recovery rate, simplifying indium recovery process, and reducing consumption
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0044] The composition of the indium-containing zinc oxide supernatant of the present invention is: In 3+ 0.92g / L, Bi 3+ 0.12g / L, Sn 2+ 0.11g / L, SiO 2 0.36g / L, Fe 2+ 20.83g / L, Fe 3+ 23.71g / L, Cu 2+ 0.73g / L, Zn 2+ 87.36g / L, As 3+ 1.59g / L, Cl - 0.89g / L,H 2 SO 4 71.53g / L.
[0045] Step 1: Reduction: Add the zinc sulfide concentrate after ball milling to the constantly stirring indium-containing zinc oxide supernatant, and the addition amount of the zinc sulfide concentrate is Fe 3+ All reduced to Fe 2+ The theoretical dosage is 1.0 times, the reduction temperature is 95°C, and the time is 2 hours. After filtration, the reduction solution and reduction slag are obtained, and the reduction slag returns to the zinc system to recover zinc. The main components of the reducing solution are: In 3+ 0.91g / L, Fe 2+ 40.15g / L, Fe 3+ 4.78g / L, Zn 2+ 98.35g / L, Bi 3+ 0.13g / L, Sn 2+ 0.11g / L, SiO 2 0.34g / L, Cu 2+ 0.78g / L, As 3+ 1.51g / L, Cl - 0.93g / L,H 2 SO ...
Embodiment 2
[0051] The composition of the supernatant containing indium zinc oxide acid of the present embodiment is: In 3+ 0.92g / L, Bi 3+ 0.12g / L, Sn 2+ 0.11g / L, SiO 2 0.36g / L, Fe 2+ 20.83g / L, Fe 3+ 23.71g / L, Cu 2+ 0.73g / L, Zn 2+ 87.36g / L, As 3+ 1.59g / L, Cl - 0.89g / L,H 2 SO 4 71.53g / L.
[0052] Step 1: Reduction: Add the zinc sulfide concentrate after ball milling to the constantly stirring indium-containing zinc oxide supernatant, and the addition amount of the zinc sulfide concentrate is Fe 3+ All reduced to Fe 2+ The theoretical dosage is 1.2 times, the reduction temperature is 85°C, and the time is 3.5 hours. After filtration, the reduction solution and reduction residue are obtained, and the reduction residue zinc return system recovers zinc. The main components of the reducing solution are: In 3+ 0.91g / L, Fe 2+ 41.08g / L, Fe 3+ 3.92g / L, Zn 2+ 99.15g / L, Bi 3+ 0.13g / L, Sn 2+ 0.12g / L, SiO 2 0.38g / L, Cu 2+ 0.81g / L, As 3+ 1.65g / L, Cl - 0.97g / L,H ...
Embodiment 3
[0058] The composition of the supernatant containing indium zinc oxide acid of the present embodiment is: In 3+ 0.92g / L, Bi 3+ 0.12g / L, Sn 2+ 0.11g / L, SiO 2 0.36g / L, Fe 2+ 20.83g / L, Fe 3+ 23.71g / L, Cu 2+ 0.73g / L, Zn 2+ 87.36g / L, As 3+ 1.59g / L, Cl - 0.89g / L,H 2 SO 4 71.53g / L.
[0059] Step 1: Reduction: Add the zinc sulfide concentrate after ball milling to the constantly stirring indium-containing zinc oxide supernatant, and the addition amount of the zinc sulfide concentrate is Fe 3+ All reduced to Fe 2+ The theoretical dosage is 1.3 times, the reduction temperature is 75°C, and the time is 5 hours. After filtration, the reduction solution and reduction slag are obtained, and the reduction slag returns to the zinc system to recover zinc. The main components of the reducing solution are: In 3+ 0.90g / L,Fe 2+ 41.54g / L, Fe 3+ 3.16g / L, Zn 2+ 99.83g / L, Bi 3+ 0.14g / L, Sn 2+ 0.13g / L, SiO 2 0.41g / L, Cu 2+ 0.91g / L, As 3+ 1.64g / L, Cl - 0.98g / L,H ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More