Skewed slot crystallization apparatus and working method thereof

The invention discloses a skewed slot crystallization apparatus and a working method thereof. The skewed slot crystallization apparatus comprises a liquid flow plate, the liquid flow plate and a horizontal plane are arranged with an included angle, one end is positioned on the horizontal plane, the other end is fixed at the position higher than the horizontal surface, several opening grooves are distributed on the upper surface of the liquid flow plate along an inclined plane direction in order, and several condenser tubes are distributed below the liquid flow plate. The skewed slot crystallization apparatus has the advantages of simple structure and low cost, by controlling the condenser tube, the inclination degree of an inclined plate and the flow velocity of crystallization liquid, the reagent products with different purity can be conveniently obtained on same liquid flow plate, industrial large-scale production is realized, the apparatus can solve the problem of single purity crystal preparation, secondary utilization is realized according to different purity, operation is easy, and the apparatus can be widely used for purifying and separating common inorganic salt reagents.