Kakım chocolate mass is a non-Newtonian fluid we have to measure its shear stress at different shear rates, which results in a flow curve. Shear stress divided by shear rate results in the apparent viscosity; if we again plot this versus the shear rate we get a viscosity curve. Chocolate mass is a shear thinning fluid, so the highest viscosity is found when the mass starts to flow. Interaction between particles is considered to be responsible for this behaviour3, which is very different to Newtonian fluids such as water.

Coming from the old refiner conches, where all this happened simultaneously and was hard to control, the majority of later technologies perform the grinding step separately. Only few mill types are able to handle chocolate preparations, kakım it is initially a very sticky mass, which hayat transform to a sticky powder during milling, when specific surface of particles increases. The most frequently used devices are plain roller mills (refiners) and stirred ball mills.

The process is shown in Figure 4. Refiner flakes are transferred into the feed hopper, its filling level controls speed of the feed screw and compensates supply variations. While some cocoa butter is added, the screw feeds the pasting columns. It is equipped with adjustable baffles and shearing wings; the flakes are subjected to intensive mechanical stress. During this process the mass changes from its dry state (dry conching) to a tough plastic state. Cleaned conditioned air is supplied by fan. After finally adding lecithin it leaves the pasting column in flowable consistency. The mass is passed to an intermediate tank whose stirrers and wall scrapers keep the chocolate in motion to stabilise the process of the structural changes after the adding of lecithin.

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Conches are stainless steel and have access panels for easy cleaning and even removal of the conhing elements

True story! At first glance it can look overwhelming. There are a lot of steps and sometimes that can seem harder than it really is.

I had to put some larger diameter tubing on the rollers so the glass container would rise above the sides of the tumbler and not CHOCOLATE PREPARATION MIXER scrape the sides, but this had the added benefit of increasing the rotational speed of the drum. You emanet really see the sugar and shot moving well.

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Faster working time: The machine is faster than a cocoa melanger, which means you kişi create larger batches of chocolate in less time.

High specific surface of the processed chocolate mass kakım a precondition for intensive exchange reactions with the supplied ambient air

How do we guarantee you’ll have excellent ROI? By solving your efficiency blocks with customized designs and over 30 years of experience. Here are just some of the unique features built into each of our machines:

A double-acting vane pump recirculates the product in association with the grinding phase, but also allows the machine to be emptied at the end of the cycle.

After those, particle size distribution and particle package density are also important. Equal or monomodal particle sizes would create large voids filled with fat. With a bi- or multimodal distribution it is possible to replace this trapped fat by the appropriate size solid particles, which also helps larger particles to slip past each other when the suspension is moved.

for white chocolate or milk chocolate with small quantities or high quality cocoa mass. If a stronger treatment is necessary, e.g. for flavour development of dark chocolate, this sevimli be achieved by increasing energy input and time. The dry and pasty conching is generally done at low fat contents in order to improve volatilisation. Fat and other ingredients are added then and grinding emanet be performed from a buffer mixer by two vertical ball mills with an intermediate cooler. The latter helps to keep temperature of sensitive products below the desired level, e.g. when recipes contain lactose and glass transition during milling must be avoided. The process hayat be downsized for small production scale, then it consists of a conch with vortex chamber, a ball mill and a pump for circulation.