
Continuous Mixing
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In continuous mixing, the weighing, feeding, mixing and discharge steps occur continuously and simultaneously.
- The materials to be mixed flow continuously into the mixer at a measured flow rate.
- Materials are mixed as they travel from the feeding point to the discharge point.
- The time of travel from the feeding point to the discharge point is termed as the retention time of the material in the mixer.
- The discharge rate from the continuous mixer is measured in ‘kg / hr’.
- Continuous mixing system are used when:
- High volumes are to be mixed.
- The pre-mixing and post-mixing equipment are operated continuously
- The advantages of the continuous mixing operation are as follows:
- Continuous mixers of lower volumes and power produce large quantities of mix, when compared to batch mixers.
- Using online monitoring and measuring instruments, continuous mixers can be operated in an automated mode.
- The disadvantages of the continuous mixing operation are as follows:
- Continuous mixers lack of operational flexibility as compared to batch mixers.
- Continuous mixers are not suited for mixing large number of ingredients with high variations in charging quantities.
- Continuous mixers are expensive to maintain.
- Continuous mixers are not suited for applications where product formulations need to be precise.
- Mixing Expert Tips
- Segregation of material during discharge can be minimized by locating the mixer discharge near the packing units.
- For best results from a continuous mixer, a well defined sampling and material testing procedure should be followed.
- The material feeding devices should be carefully calibrated and frequently checked for accuracy.
Related terms- Batch mixers, Batch mixing, Continuous mixers
Related Articles: Batch Mixing
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