a heat exchanger 22 with the aid of a cooling or heating device 23 there are however also other possible methods of temperature control such as the direct addition of steam if it is expedient to increase the temperature if necessary a portion of the carbon dioxide gas 24 u2032 may also be added after crystallizer 20 using a mixing device 25 in order to complete the loading operation the loaded pulp suspension is collected in a storage chest 26 possibly diluted with water 27 and is then available as a pulp suspension 28 for a papermaking machine 29 the part of the plant shown in fig3 for loading with fillers in particular calcium carbonate should be regarded only as a simplified example in many cases a bleaching operation may also be integrated therein the present invention allows for the loading process then to be operated as an online process in the paper mill in that case at least one of the following apparatus and or components may be used for the online process hc cleaner static mixer lime slaking apparatus press in particular screw press or belt press compensating reactor crystallizer a further static mixer co 2 supply device or additional co 2 recovery device optional co 2 heater optional addition of chemical bleaching agent and a press water tank the formation of crystalline precipitation particles results in the advantage that higher gloss values can be achieved for the end product according to one embodiment of the present invention the press filtrate 9 is used at least partially as dilution water in crystallizer 20 mixing device 25 may be a static mixer and may be used in particular for fine adjustment of the ph value of the pulp suspension.