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Publication Date: 09/2013
Pages: 3
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Mixing Mechanics: Practical powder blending — run-time failures

This column explains how run-time errors lead to insufficient blending in batch blenders.

Blending failures result from one of three causes: segregation (spontaneous ingredient separation during blend flow), agglomeration (particles combining to create lumps), and insufficient blending (a poor blend resulting from a too-short blending time). While raw material properties typically drive segregation and agglomeration (although both can be worsened by suboptimal processing conditions), insufficient blending is caused almost entirely by operational errors (also called run-time errors).

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