The invention relates to a mixture of freeze-drying slurry accelerators.With the form of dust in the coagulating accelerator, the content of ammonium nitrate calcium and water is between 0.1% and 20%.The invention relates to another production process and solidification of such an accelerator.Whether these marbles and/or grains include a different calcium nitrate and nitrate processing has formed a powder. A includes calcium and nitric acid.There is a different nitrate and water content above 5%, less than 20%.Or at least include one solution dissolved in the ammonium nitrate calcium spray drying temperature and 150 degrees C 250 degrees C between them.The formation of a calcium nitrate powder containing at least 0.1% and 20% of the water content is dust. It is found that the solidification of alpha.The invention also relates to a dry mixing mortar comprising at least one cement.A mortar and mortar dry mixed mortar according to the invention includes the invention according to the invention. Mix with water.
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