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Additives – small quantities, big impact

Although additives are only minor components in dryblend production, they are very important for the properties of the end product.

Constructive explosion protection offers safety for flammable additives, such as stabilisers or modifiers.

Stabilisers, modifiers and titanium dioxide are delivered in big bags and emptied into buffer hopper via discharge stations. Each buffer hopper is equipped with a vibration bottom to support discharge and a dosing unit for dosing into a vacuum conveying system.

The additives are weighed to the exact gram directly above the heating cooling mixer and added to the heating mixer.

« With the investment in the new mixing plant, we also wanted to achieve the greatest possible safety for our operating personnel and the plant. The system was therefore designed and built to be explosion-proof. » Matthias Fauster, Finstral AG

More about big bag discharge systems

Clean production thanks to big bag connection systems With powdery raw materials, the big bag connection system reliably prevents dust from escaping during big bag discharge.

Discharge support through vibration bottoms For a trouble-free process, it is important that the products do not come to a standstill when flowing out of the buffer hopper. The vibration bottom ensures an even product flow.

Constructive explosion protection Additives are often combustible dusts. The use of flameproof and pressure shock-resistant rotary valves and flanged pipework is essential for the safety of the operating personnel and the system.

6 | AZO Case Study | Finstral | Heating-cooling mixer feeding system