Tata Consultancy Services Limited

Pradip

Beena Rai

Abhinandan Chiney

Dharmendr Kumar

Vivek Ganvir

Venugopal Tammishetti

This disclosure relates generally to selective flocculation, and more particularly to portable test-device for performing selective flocculation experiments in continuous mode. The test-device includes a slurry inflow system, a flocculant tank, a static mixer, a control pumping system, and a thickener system. The static mixer is connected to the slurry inflow system and the flocculant tank, to receive and mix flocculant solution and slurry and cause formation of floc. The control pumping system connects the flocculant tank and the slurry inflow system to the static mixer to control the control parameters responsible for pumping the slurry and flocculant solution in the continuous mode in the static mixer. The thickener system comprises a thickener tank to receive treated slurry and the floc from the static mixer, separately collect tailings and the floc from the thickening tank. The components of the portable test-device are removably connected to each other.

Portable test-device for selective flocculation

According to an implementation of the present subject matter, a method for producing stable nanofluids is described. The method includes mixing of a base fluid with a dispersant and a metal oxide powder to form a primary mixture. The base fluid is a heat transfer fluid and the metal oxide powder includes particles of size greater than 100 nm. The method further includes grinding the primary mixture to obtain a concentrated nanoparticle suspension where the dispersant is added to the primary mixture during the grinding after every pre-determined time period.

Nanofluids for heat transfer applications

A method for preparing suspension of inorganic nanoparticles is described herein. The method includes mixing a dispersing medium () with a dispersant () and a metal oxide powder () to form a primary mixture (), the dispersant () being selected based on interaction energy of the dispersant () with respect to the dispersing medium () and the metal oxide powder (). The method further includes grinding the primary mixture () to obtain a suspension (), wherein at least the dispersant () is added to the primary mixture () during the grinding after predetermined time intervals.

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Pune, India

Pradip