Paste Mixer

The preheated dry aggregate is fed together with the binder pitch (in liquid or solid form) into the hot mixer (1)The intensive mixing effect replaces “short-time pitch penetration by means of kneading forces” with “long-time pitch penetration by careful intensive mixing”. Due to the special construction principle, the retention time in the machines is approx. twice as long as in a conventional kneader.

The paste coming from the hot mixer is remixed and cooled simultaneously in the remixer-cooler (2). The effective cooling is achieved by injection of water into the anode paste and subsequent immediate evaporation. The discharge temperature is precisely controlled with a variation of less than +/- 3 °C. Steam and pitch fumes are led to the ex- haust air treatment center by means of saturated air flowing through the machine.