Refining & Grade Specs

Dysprosium Refining Methods and Grade Specifications

The transformation of Dysprosium concentrate into refined products suitable for industrial use requires specialized metallurgical and chemical processes. Dysprosium is refined into 3 primary commercial forms, each serving specific end-use sectors.

Refining Processes

The primary refining and processing pathways for Dysprosium include:

1. In-situ leaching of ion-adsorption clays
2. Solvent extraction (multi-stage)
3. Molten salt electrolysis

Product Forms and Grade Specifications

Refined Dysprosium is available in the following commercial forms, each with specific purity requirements:

Quality Standards and Benchmarks

International standards for Dysprosium products are established by organizations such as ASTM International and various national standards bodies. Pricing is referenced against Asian Metals/Shanghai Metals Market assessments. These standards define minimum purity levels, acceptable impurity limits, and testing methodologies that facilitate international trade.

Refining Capacity and Geography

Global refining capacity for Dysprosium is concentrated in a limited number of countries. China controls approximately 98% of primary production and plays a significant role in downstream refining. Efforts to diversify refining capacity are a key priority for governments seeking to reduce supply chain dependencies, particularly in the neodymium-iron-boron permanent magnets sector.