How to Mix Bentonite Clay

How to Mix Bentonite Clay


Bentonite is a naturally occurring aluminium silicate clay which can take up to several times its own weight of water to form a highly thixotropic colloidal suspension or gel. Bentonite is widely used as a suspending, stabilizing and binding agent and as an adsorbent or clarifying agent in many applications. It is also one of the main raw materials in drilling muds. Although some grades of bentonite can be dispersed into water relatively easily with conventional mixing equipment, low shear devices struggle to activate the thickening effect, resulting in longer mixing times and poor yield. To disperse bentonite correctly and fully develop the gelling effect, you need to use a high shear mixer. Here’s how to do it. The mixer is started and the bentonite is added as rapidly as the machine will take it in. The mixer draws the powder and the liquid into the workhead where they are subjected to intense high shear in the gap between the rotor and the stator before being projected back into the main body of the mix. The mechanical and hydraulic shear imparted to the bentonite particles activates the gelling effect very quickly. For larger batches, a Silverson Flashmix will incorporate and hydrate the bentonite in a fraction of the time taken by conventional mixers. Powder is added at the floor level so there’s no need for conveyor systems. The Flashmix is designed for use on high viscosity mixes and is easy to install, easy to operate and easy to clean. We also offer specialized In-Line mixers for large scale operations such as production of drilling muds. To find out more, contact us today or visit our website at www.silverson.com

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