Purification Process Data for Recycled Graphite from Spent Potlining

A 51.3 KB document by Amira Merchichi, last updated on 2026-04-30, details experimental results for purifying graphite from spent potlining waste. The study evaluates alkaline fusion and aqueous leaching techniques to remove impurities, aiming for battery-grade graphite purity of approximately 99.95% carbon. Specific process parameters and resulting purity levels, such as achieving 98.25% Cg, are reported.

Use Cases

• Compare the efficacy of static alkaline fusion versus aqueous alkaline leaching based on the described experimental parameters and impurity removal rates.
• Model impurity removal kinetics based on the reported process conditions (temperature, time, reagent ratios) and final elemental compositions.
• Benchmark recycled graphite purity for battery applications against the target of 99.95% Cg and the achieved levels described.
• Analyze the relationship between graphite particle size fraction and final purity based on tests conducted on the [-106 +20 µm] fraction.

Strengths

• Provides specific, quantitative results, including a maximum achieved purity of 98.25% Cg and impurity removal of about 80%.
• Documents detailed experimental parameters such as NaOH:graphite ratios, temperatures (100°C to 500°C), and leaching durations.
• Includes a detailed physico-chemical and mineralogical characterization of the starting graphite concentrate (90% Cg).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download from the text document.
• Row count is unknown, which may limit suitability assessment for quantitative analysis.
• The dataset is very small (51.3 KB), indicating limited scope, likely containing summary results rather than raw experimental data.

Provenance

Source

figshare, author Amira Merchichi.

Collection Method

Experimental study involving flotation, alkaline fusion, and acid leaching processes on material supplied by Rio Tinto.

Time Range

The document describes a specific study but does not specify the data collection period.

Freshness

Last updated 2026-04-30 16:39:03; freshness should be verified.

Geography

Geography is not specified in the provided input.