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The LPP-D pump has a high turndown ratio making it ideal for dosing in all process conditions, even with highly viscous media. The ability of the Larox LPP-D15 pump to meet the reliability and accuracy demands of the cement making industry has led to its use by a US cement manufacturer for pumping polyglycol. Grinding aids such as glycol, amines and acetic acid help cement particles to flow efficiently which reduces grinding energy and results in increasing product throughput.
The polyglycol is added to the cement prior to the final grinding circuit. The customer was gravity feeding using a manual valve for controlling the grinding aid to the circuit and was not satisfied because it could not properly control the dosage. As the company's engineers were already familiar with Larox, they felt confident in their choice of a Larox pump for this application where reliability and good repeatability are needed.
A variable-frequency drive is used to control the pump flow to the circuit to adjust grinding aid dosage. The LPP-D pump has a high turndown ratio making it ideal for dosing in all process conditions. Finite control provides proper dosing to the system. The pump is operating with a highly viscous medium.
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