Preparation method of chain calcite calcium carbonate

The invention discloses a preparation method of chain calcite calcium carbonate, which comprises the steps of breaking and sieving limestone, calcining limestone screenings with a high-temperature furnace, controlling a digestion rate t60 of quicklime obtained by calcining to be less than or equal to 1.5min, and a residual quantity of carbon dioxide to be less than or equal to 0.7%, mixing the quicklime and water for digestion reaction to form lime slurry, sieving the lime slurry with a 150-mesh sieve for deslagging, performing sanding for 0-10min, controlling particle size distribution of thelime slurry, adjusting a solid content of the lime slurry, conveying the lime slurry to a carbonizer for carbonation reaction to form a calcium carbonate suspension, and performing surface treatment,dehydration with a press filter, drying, grinding and screening to form calcium carbonate. The method does not require a crystal form control agent; chain calcium carbonate can be prepared only by controlling the lime, the li