In the past, raw materials were sent directly to landfill ’leading to overflowing landfills. However, the concept of twin shaft mixer helped them to sell most of the extracted material by bifurcating clay and stones using little bit of quicklime. A twin shaft mixer is designed with two symmetrical drums with two counter rotating rotors and angled paddles. The mixing of the material is done by overlapping of the rotors in the centre. The movements in the fluidized zone are in all directions: up and down, left and right, and back and forth, allowing free and random movement. The designing of the twin shaft mixer is robust which delivers high output. In most cases, the design of the twin shaft mixer is compact to facilitate them to be retrofitted into the existing plants. The collaboration of the two zones is the key to the unique mixing technology, for instance all particles are carried into a highly consistent mix. Normally, these shaft mixers are flexible in filling v...