Method for rapidly testing content of calcium sulfate in limestone wet desulfurization gypsum

The invention discloses a method for rapidly testing the content of calcium sulfate in limestone wet desulfurization gypsum, which comprises the following steps: extracting a first flue gas desulfurization gypsum sample, and carrying out water content analysis treatment on the first desulfurization gypsum sample to obtain the water content of the desulfurization gypsum sample; extracting a second desulfurization gypsum sample, and drying the second desulfurization gypsum sample in a drying oven at a preset temperature until the weight is constant, so as to obtain a dried desulfurization gypsum sample; extracting a third desulfurization gypsum sample, and carrying out calcium sulfite content analysis treatment on the third desulfurization gypsum sample to obtain the calcium sulfite content; and calculating the content of calcium sulfate in the desulfurization gypsum sample based on the water content of the desulfurization gypsum sample, the dried desulfurization gypsum sample and the content of calcium sulfite