Method for recycling carbon substances in waste cathode leaching residues of aluminum electrolysis cell
A technology for waste and leaching of slag from aluminum electrolytic cells, which is applied in chemical instruments and methods, solid waste removal, transportation and packaging, etc., can solve the problems of low recovery rate, complicated process, neglect of carbon material recovery and resource utilization, etc. To achieve the effect of good adsorption performance, wide source of raw materials, and remarkable adsorption effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0062] Take a certain amount of the two-step leaching leaching slag obtained in Comparative Example 1, crush and mix it, and collect spare granules. Among the spare granules, the particles with a particle size of less than 100 mesh account for 90% of the total granule mass. Combine the leaching residue with potassium permanganate in m(KMnO 4 ) / m (leaching slag)=0.25:1g / g mixed, while adding concentrated H with a mass fraction of 98% 2 SO 4 , leached residue and concentrated H 2 SO 4 The liquid-solid ratio is V (concentrated H 2 SO 4 ) / m (leaching slag)=3:1mL / g, stirred at 30°C for 30min, and then stood still for 30min to make the material swellable and then filtered. The expandable material was placed in a muffle furnace at 900°C for 20 seconds to achieve instantaneous expansion, then taken out, and cooled naturally to obtain an expanded graphite-like material. The filtrate was supplemented with appropriate KMnO 4 and concentrated H 2 SO 4 You can continue to use it l...
Embodiment 2
[0067] Take a certain amount of the two-step leaching leaching slag obtained in Comparative Example 1, crush and mix it, and collect spare granules. Among the spare granules, the particles with a particle size of less than 100 mesh account for 80% of the total granule mass. Combine the leaching residue with potassium permanganate in m(KMnO 4 ) / m (leaching slag)=0.55:1g / g mixed, while adding concentrated H with a mass fraction of 75% 2 SO 4 , leached residue and concentrated H 2 SO 4 The liquid-solid ratio is V (concentrated H 2 SO 4 ) / m (leaching slag)=5:1mL / g, stirred at 30°C for 30 minutes, and then stood still for 30 minutes to make the material swellable and then filtered. The expandable material was placed in a muffle furnace at 900°C for 25 seconds to achieve instantaneous expansion, then taken out, and cooled naturally to obtain an expanded graphite-like material. The filtrate was supplemented with appropriate KMnO 4 and concentrated H 2 SO 4 You can continue t...
Embodiment 3
[0072] Take a certain amount of the two-step leaching leaching slag obtained in Comparative Example 1, crush and mix it, and collect spare granules. Among the spare granules, the particles with a particle size of less than 100 mesh account for 100% of the total granule mass. Combine the leaching residue with potassium permanganate in m(KMnO 4 ) / m (leaching slag)=0.85:1g / g mixed, adding mass fraction is 75% concentrated H at the same time 2 SO 4 , leached residue and concentrated H 2 SO 4 The liquid-solid ratio is V (concentrated H 2 SO 4) / m (leaching slag)=3:1mL / g, stirred at 35°C for 40min, and then stood still for 20min to make the material swellable and then filtered. The expandable material was placed in a muffle furnace at 900°C for 20 seconds to achieve instantaneous expansion, then taken out, and cooled naturally to obtain an expanded graphite-like material. The filtrate was supplemented with appropriate KMnO 4 and concentrated H 2 SO 4 You can continue to use ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
| particle size (mesh) | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More