Apparatus for the dosed delivery of a granular solid material

An apparatus for the dosed delivery of a granular solid material to a reaction container possessing a delivery inlet, comprising:

• a delivery funnel adapted to be connected to the delivery inlet of the reaction container;
• said delivery funnel having an inlet opening;
• a dosing device having a supply of granular solid material and an outlet opening;
• a transfer chamber connecting said inlet opening of said delivery funnel with said outlet opening of said dosing device;
• said dosing device conveying the granular solid material in a compacted state upwardly against the force of gravity through said outlet opening into said transfer chamber;
• said transfer chamber having a stationary base means;
• said outlet opening of said dosing device and said inlet opening of said delivery funnel being located in said stationary base means of said transfer chamber;
• conveying means within said transfer chamber for conveying said granular solid material from said outlet opening of said dosing device to said inlet opening of said delivery funnel;
• said conveying means comprises a predetermined number of vanes;
• and
• said conveying means further comprising drive means for displacing said vanes in said transfer chamber and thereby scrapingly and controllably displacing a respective dosed quantity of said granular solid material from said outlet opening of said dosing device to said inlet opening of said delivery funnel.