Questions: During the dressing processes all the following occur except: (Exam 1 L2Ch 2) a) converting black ore into red ore b) removing some impurities by magnetic separation c) removing oxygen from the red ore d) converting the ore into suitable size

Solution Steps

The dressing process in metallurgy involves the preparation of ores for further processing. This typically includes:

• Crushing and grinding the ore to a suitable size.
• Removing impurities through various methods such as magnetic separation.
• Concentrating the ore to increase the metal content.

Let's analyze each option to determine which one does not occur during the dressing process:

• Option a: Converting black ore into red ore. This is not a typical step in the dressing process. The color change might indicate a chemical transformation, which is not part of ore dressing.
• Option b: Removing some impurities by magnetic separation. This is a common method used in ore dressing to separate magnetic materials from non-magnetic ones.
• Option c: Removing oxygen from the red ore. This is a reduction process, typically part of smelting, not dressing.
• Option d: Converting the ore into suitable size. This is a standard part of the dressing process, involving crushing and grinding.

Based on the analysis, the step that does not occur during the dressing process is removing oxygen from the red ore.

Final Answer