Method for rapidly testing total calcium carbonate content in limestone and calcium hydroxide mixed sample

The invention relates to the technical field of calcium carbonate analysis and detection, and particularly discloses a method for rapidly testing the total calcium carbonate content in a limestone and calcium hydroxide mixed sample, which comprises the following steps: drying the limestone and calcium hydroxide mixed sample to constant weight, weighing the dried limestone and calcium hydroxide mixed sample, dissolving with carbon-dioxide-free water, and measuring the content of calcium carbonate in the limestone and calcium hydroxide mixed sample; filtering with a filter membrane with the pore size of less than 0.45 mu m to obtain filtrate, and washing the filter membrane with carbon-dioxide-free water until the pH value of the filtrate is less than 8.3; analyzing the filtrate by adopting a calcium sucrose-hydrochloric acid titration method to obtain the effective calcium oxide mass fraction W effective CaO; analyzing by adopting a hydrochloric acid back-dropping method to obtain the mass fraction W (titrated