TEMA Systems with Siebtechnik - Advancements in Centrifuges for Potash and Salt Dewatering Applications


As the farmers work to maximize crop yields the worldwide demand for fertilizers is exploding. Large mining companies are expanding their current and future production of potash, one of the most critical commodities that is used to manufacture fertilizers. Existing mines are being expanded and new mines developed leading to demand for product centrifuges for the processing plants that service the mines.

TEMA Systems, Inc. and our parent company Siebtechnik is one of the two largest manufacturers of industrial centrifuges servicing the worldwide demand for potash centrifuges and salt centrifuges for continuous liquid/solid separations with hundreds of units installed worldwide. Listening to the requests of our customers we have introduced higher capacity and more efficient centrifuges for separating KCl, NaCl, Carnalite, and Sylvinite.

Our specialty centrifuges, with rotors as large as 1.5 meters in diameter, include our Conturbex Worm/Screen model CX-1500 a separator that now can process over 100 metric tons per hour of solids per unit. This allows fewer units to service large facility full process rates for their primary product centrifuges. Our design includes patented wear protection and equipment engineered to produce a balance between machine uptime and ease of maintenance with low discharge moistures to optimize drying efficiency. These style units are generally used in these salt applications with a concentration of greater than 25% and an average particle size of 0.2 mm.

Our pusher centrifuges and vibratory centrifuges have also been improved for potash, salt, and solar salt applications. A heavy media circuit can generate course material that works well with our vibratory centrifuges model HSG-1500 a separator that now can process over 200 metric tons per hour of solids per unit. This style unit generally has feed streams with a concentration of greater than 75% solids and an average particle size of 2.0 mm.

TEMA has improved our screen designs and the material of construction of the components to improve the screen life. Average users are seeing 1.5 months of screen life with our competitors design, but with our improvements typical screen life is 6 months. We have also improved the screen and tooling design to allow for easier changes, reducing maintenance costs. The design improvements have also led to improved discharge moistures, giving results below 2% moistures in many cases.

Chad Mendelsohn

Sales Manager - Chemical Centrifuges

TEMA Systems, Inc.

Mendelsohn@tema.net

Ph: 513-489-7811 Ext. 113

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