Red Mud Analysis

• Red mud shows compositional features of the materials.
• Rounded shape of red mud particles is responsible for extremely high friction angles, most of minerals are cubic or prismatic shapes.
• The cementing/aggregating agent is hydroxysodalite. It is only very slightly soluble in water, but becomes more soluble in alkaline conditions.
• The dissociation of hydroxysodalite is responsible for decrease of rounded shape and aggregation of red mud