Sargonite is a carbonate mineral. Ssite chemical composition of SrO 70.19%, CO2 29.81%, often containing manganese, barium and calcium. 3.5 hardness, brittle, 3.76 relative density. Usually white, sometimes due to impurities, and into gray, yellow, white, light green or brown, striations white. The orthorhombic system is completely rhombohedral cleavage, with glassy luster, grease luster in section, and shell-shaped fracture. Dissolved in dilute hydrochloric acid, resulting in bubbles. It is associated with galena, sphalerite and chalcopyrite in sulfide-bearing veins, as well as calcite, dolomite and quartz.

A process method for the production of strontium carbonate in four processes, such as celestial stone as raw material, pre-treated, using conversion agent conversion reaction, purification treatment, pure carbonate product preparation, etc., is characterized:

Pretreatment is the process of adding calcium removal agent and controlling the temperature to react at 60~90 ℃ for 0.5~2 hours, in which the addition amount of calcium removal agent is 125~175% of the theoretical amount, and concentrated hydrochloric acid or concentrated nitric acid or concentrated sulfuric acid can be used as calcium removal agent,

The conversion reaction is a process of using ammonium bicarbonate as a conversion agent, mixing the pretreated celestite with solid ammonium bicarbonate in the presence of ammonium hydroxide, and reacting at 65~80 ℃ for 3.5~7 hours, wherein the amount of ammonium hydroxide is 120~180 of the amount of celestite, and the amount of ammonium bicarbonate is 130~170 of the amount of celestite,

The purification treatment is a process of adding 8 ~ 12N hydrochloric acid, controlling the temperature to dissolve the reaction at 60~90 ℃, adding barium removal agent after the reaction is complete, and then adding ammonium hydroxide to PH = 6~8, wherein the dosage of hydrochloric acid is controlled at 103~110 of the theoretical amount, and the dosage of barium removal agent is controlled at 20 ~ 50% of the theoretical amount, barium removal agent can be potassium chromate or sodium chromate or potassium dichromate or sodium dichromate or ammonium sulfate,

The preparation of pure strontium carbonate product is a process in which the strontium chloride purification solution is controlled to be heated to 50~80 ℃, and a saturated solution of ammonium bicarbonate is added in the presence of ammonium hydroxide for reaction, wherein the amount of ammonium hydroxide is controlled at 102~120% of the theoretical amount, and the amount of ammonium bicarbonate saturated solution is controlled at 102~120% of the theoretical amount.