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Birli 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 birli 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, bey it is initially a very sticky mass, which kişi 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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Tried and tested at over 3500 finers worldwide, the Finer S is capable of processing a vast range of masses with different compositions and consistencies to your desired fineness.
The Refiner/Conche özgü a specially designed shaft equipped with grinding bars and a pressure adjustment mechanism to adjust the pressure on the product between the grinding bars and the lining bars (around the cylinder of the Refiner/Conche).
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• Comprehensive suite of control and monitoring functions including maintenance, energy monitoring, storage and downloading veri for production along with safety protection and process monitoring
YS/B 500 with unique design, distinctive workmanship and advanced technology provides maximum product output in minimum time and works noiselessly.
Crumb is an ingredient made by drying milk together with sugar and cocoa liquor. Originally this was done for preservation of the milk, but nowadays it is performed in order to create the strong caramel flavour preferred in some countries. For downstream mass production the same technologies kişi be used, bey with other chocolate types.
An alternative method to produce chocolate is using a ball mill where the mass is milled and sheared at the same time. Although cocoa liquor is usually ground by ball mills, those are derece popular for chocolate mass in the European industry. Nevertheless those systems are commonly used worldwide. The production is closed, which ensures hygienic processing and prevents contamination. Industrial-scale ball mills work continuously.
The goal of the melanger is CHOCOLATE PREPARATION MIXER to achieve a homogeneous mixture and a desirable texture in the chocolate.
What are the main advantages of the process for larger and also for smaller chocolate producers and what is the minimal size of an industrial production line?