Ore dressing primarily aims to:

Ore dressing, also known as mineral processing, primarily focuses on the removal of impurities from ores to ensure higher purity and quality of the metal extracted. This process is critical because raw ores are often mixed with various unwanted materials such as silicates, carbonates, and other minerals that can negatively impact the efficiency of subsequent metal extraction processes.

By separating these impurities, ore dressing enhances the overall grade of the material, enabling more efficient extraction methods to be employed, such as smelting or electrolysis. The resulting concentrate has a higher metal content, which is essential for the economic viability of mining operations.

The other options, while related to the overall context of metallurgy and metal production, do not capture the primary goal of ore dressing. The process does not directly involve creating new metals or enhancing physical properties beyond refining the ore. Similarly, while increasing market value can be an indirect result of better processing, it is not the main focus of ore dressing itself, which is centered on purifying the ore.