Uniform heating system for modifying ground calcium carbonate powder

The utility model discloses a uniform heating system for modifying heavy calcium carbonate powder. The uniform heating system comprises a spiral heater and a rotary dispersion heater, the spiral heater is fixed through an arranged spiral heater supporting frame; the spiral heater comprises a heater body, an inner cavity of the heater body is of a funnel-shaped structure, and spiral heating rollers are further distributed in the inner cavity. The spiral heating roller is of a structure with a wide upper part and a narrow lower part, and a spiral downward conveying heating groove is formed in the surface of a roller body of the spiral heating roller; a hot oil circulating channel which is spirally upward is correspondingly formed in the roller body; and the rotary dispersion heater is distributed below the spiral heater and is connected with a discharge hole of the spiral heater. By adopting a double-heat-source heat supply mode combining gas heating and electric heating, the powder heating balance and stabilit