Applications

Chemicals

Cellulose (CMC)

Fig. Cellulose derivative

Fig. Cellulose derivative

Summary

Cellulose and cellulose derivatives are made from plant cell wall, and are used as binder or as thickener in foods and pharmaceuticals. Cellulose derivatives are used in bakery, meat, fish or dietary food, whereas microcrystalline cellulose is used in low calorie food (salad dressing and desert). Cellulose is used in pharmaceutical industry as an expanding agent, which accelerates the release of active material or construction field.

Contents

Fig.1 Flow of Drymeister

The grinding and drying flow of cellulose derivatives is shown as Fig 1.
The Drymeister DMR-H conducts fine grinding and drying at the same time. This system has a high production capacity, offering final product of d98 = 100 μm at the moisture content of below 5%. DMR-H has an air classifier integrated mill that can continuously produce fine dry product.

Fig.2 Drymeister DMR-1H

A cellulose derivative dry grinding system is shown as follows. The feed material has 3.2% moisture with below 1mm sizes. Required final product is d99.5 = 125 μm. This system consists of two stages. The cellulose derivatives are too hard material to be milled to the required particle size. The product from the first grinding process is to be ground and classified in the next process.

Conventionally ACM Pulverizer is used to grind cellulose to the size of 20-40μm, with standard type bar hammer. After incorporation of the newly developed vertically grooved hammer, capacity of ACM Pulverizer is increased by as much as 50%.

Fig.3 ACM Pulverizer

Nauta mixer is used for Cellulose powder application, for the purpose of product quality stabilization. In this case volume of Vrieco Nauta mixer with 10-20m3 is commonly used. It was reported that Vrieco Nauta mixer is superior to conventional vertical shaft conical mixer in terms of mixing accuracy, which directly improves stability of the product quality.

Fig.4 Vrieco Nauta mixer

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