A ferromagnetic catalyst for catalyzing the hydrolysis and precipitation of ferric iron, its preparation method and application
A catalyst and ferromagnetic technology, applied in the field of hydrometallurgy, can solve the problems of difficult solid-liquid separation and large loss of zinc metal, and achieve the effects of good sedimentation separation effect, increased particle size, and easy recovery and reuse.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0039] Using this process method to treat the zinc oxide leaching solution of Yunnan Chihong Zinc and Germanium Huize Smelter in the laboratory, the iron content is 3.2g / L.
[0040] Preparation of ferromagnetic catalyst: Add 0.5g / L ferric sulfate solution and 2g / L -325 mesh iron powder in the reaction kettle, adjust the pH of the solution to 2 by mass concentration of 5% sulfuric acid, and the mechanical stirring speed is 300r / min, slowly 1 mol / L sodium hydroxide solution was added dropwise to raise the pH of the solution to 4, and after being stable for 30 minutes, it was filtered and dried to obtain a ferromagnetic catalyst.
[0041] Inject 2L of zinc leaching solution into the reactor, one group does not add any catalyst, and the other group adds ferromagnetic catalyst 3g / L, the stirring speed is 350r / min, and the temperature is controlled at 80-85°C. Adding pure oxygen to the leaching solution will affect Fe 2+ Slow oxidation, while continuously adding 10% mass concentrat...
Embodiment 2
[0045] Utilize this technological method to process the zinc oxide leaching solution in Yunnan Chihong Zinc and Germanium Huize Smelter Industrial Experiment, containing 2.4-3.5g / L of iron.
[0046] Preparation of ferromagnetic catalyst: Add 0.8g / L ferric sulfate solution and 2.4g / L -325 mesh iron powder in the reaction kettle, adjust the pH of the solution to 1.7 by mass concentration 5% sulfuric acid, and the mechanical stirring speed is 300r / min, Slowly add 1 mol / L sodium hydroxide solution dropwise to raise the pH of the solution to 4, stabilize for 10 minutes, filter and dry to obtain a ferromagnetic catalyst.
[0047] This process is industrially implemented in the zinc oxide workshop of Yunnan Chihong Zinc and Germanium Huize Smelter, and the on-site zinc oxide leachate flow rate is 80-100m 3 / h Ferromagnetic catalyst dry powder is added to the second stage and iron removal 1# barrel at a dosage and frequency of 80kg / h. In the test, the pH value of each barrel of the s...
Embodiment 3
[0052] The zinc oxide leaching solution of another zinc smelter in Yunnan was treated in the laboratory by this process method, and the iron content was 5.4g / L.
[0053] Preparation of ferromagnetic catalyst: Add 0.5g / L ferric sulfate solution and 2g / L -325 mesh iron powder in the reaction kettle, adjust the pH of the solution to 2 by mass concentration of 5% sulfuric acid, and the mechanical stirring speed is 300r / min, slowly 1 mol / L sodium hydroxide solution was added dropwise to raise the pH of the solution to 4.2, and after being stable for 35 minutes, it was filtered and dried to obtain a ferromagnetic catalyst.
[0054] Inject 1L of zinc leaching solution into a glass beaker, one group does not add any catalyst, and the other group adds ferromagnetic catalyst 4g / L, the stirring speed is 300r / min, and the temperature is controlled at 85-90°C. Slowly add 6% hydrogen peroxide to the leaching solution for Fe 2+ Slowly oxidize while continuously adding neutralizer calcium ca...
PUM
| Property | Measurement | Unit |
|---|---|---|
| concentration | aaaaa | aaaaa |
| concentration | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More