Method for comprehensively recycling nickel-containing limonite
A technology for limonite and mineral materials, which is applied in the field of comprehensive recovery and utilization of nickel-containing limonite, can solve the problems of low nickel and cobalt leaching rate, unrecoverable iron, and small consumption, and achieve low leaching temperature and inhibit leaching , The effect of low leaching pressure
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0015] Example 1
[0016] A method for comprehensive recovery and utilization of nickel-containing limonite includes the following steps:
[0017] The raw material composition of nickel-containing limonite used: Ni 0.8%, Fe 43%, Co 0.1%, MgO 3.65%, SiO 2 7.7%, CaO 2.1%, Al 2 O 3 6.08%, Cr 1.72%;
[0018] 1) Crushing and grinding the nickel-containing limonite to obtain mineral material, the particle size of 70% of the mineral particles of the mineral material is less than 74 μm;
[0019] 2) Pressure leaching: mix mineral materials with nitric acid + sulfuric acid, heat and stir in a pressurized kettle, and perform pressure leaching according to the following process parameters to obtain a leachate; the amount of nitric acid is 1.1 times the theoretical amount (the theoretical amount is leaching Ni, Co, MgO, CaO, Al in materials 2 O 3 Required amount of nitric acid), leaching temperature 150℃, leaching time 60min, liquid-solid ratio 2:1, oxygen partial pressure 0.10MPa, stirring li...
Example Embodiment
[0025] Example 2
[0026] A method for comprehensive recovery and utilization of nickel-containing limonite includes the following steps:
[0027] The composition of nickel-containing limonite used: Ni 1%, Fe 45%, Co 0.1%, MgO 5.42%, SiO 2 6.9%, CaO 3.2%, Al 2 O 3 8.02%, Cr 2.22%.
[0028] 1) Crushing and grinding the nickel-containing limonite to obtain mineral material, the particle size of 70% of the mineral particles of the mineral material is less than 74 μm;
[0029] 2) Pressure leaching: Mix the mineral material with nitric acid + sulfuric acid, heat and stir in a pressurized kettle, and perform pressure leaching according to the following process parameters to obtain a leachate; the amount of nitric acid is 1.05 times the theoretical amount, and the leaching temperature is 160°C. , Leaching time 60min, liquid-solid ratio 2:1, oxygen partial pressure 0.10MPa, stirring linear speed 5m / s; leaching rate: nickel 85%, cobalt 71%, aluminum 84%, magnesium 96%, iron 0.8%;
[0030] ...
Example Embodiment
[0035] Example 3
[0036] A method for comprehensive recovery and utilization of nickel-containing limonite includes the following steps:
[0037] The composition of nickel-containing limonite used: Ni 1.2%, Fe 40%, Co 0.08%, MgO 2.36%, SiO 2 8.7%, CaO 3.2%, Al 2 O 3 5.1%, Cr 2.46%.
[0038] 1) Crushing and grinding the nickel-containing limonite to obtain mineral material, the particle size of 70% of the mineral particles of the mineral material is less than 74 μm;
[0039]2) Pressure leaching: mix the mineral material with nitric acid + sulfuric acid, heat and stir in a pressurized kettle, and perform pressure leaching according to the following process parameters to obtain a leachate; the amount of nitric acid is 1 times the theoretical amount, and the leaching temperature is 180°C , Leaching time 30min, liquid-solid ratio 2:1, oxygen partial pressure 0.10MPa, stirring linear speed 5m / s; leaching rate: nickel 85%, cobalt 72%, aluminum 80%, magnesium 92%, iron 0.6%;
[0040] 3) ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap