Drying agent and preparation method thereof

[0023] Embodiment 1: Preparation of desiccant

[0024] (1) Select 40 parts of magnesium hydroxide and 45 parts of magnesium chloride hexahydrate as required; 13 parts of aluminum oxide, 0.7 part of lignin, 0.7 part of carboxymethyl cellulose, 0.6 part of glass fiber, open the discharge port of the powder mixer for discharge material;

[0025] (2) After the powder mixing is completed, add the mixed powder into the granulator and add water for granulation;

[0026] (3) After completing the granulation, put the shaped granules into a vibrating sieve for screening and polishing;

[0027] (4) After finishing the polishing, the semi-finished particles are dried by a dryer, and the temperature distribution of the dryer is a trapezoidal temperature rise trend of 80-120°C from the inlet to the outlet;

[0028] (5) After drying, the semi-finished granules are roasted to make finished granules, and the dried semi-finished granules are added to a roasting furnace for roasting. The roast...

[0030] Embodiment 2: Preparation of desiccant

[0031] Prepared with reference to Example 1, 30 parts of magnesium hydroxide and 58 parts of magnesium chloride hexahydrate; 10 parts of aluminum oxide, 0.9 part of lignin, 0.5 part of carboxymethyl cellulose, and 0.6 part of glass fiber.

[0032] Embodiment 3: preparation desiccant

[0033] Reference Example 1 was prepared, 25 parts of magnesium hydroxide and 63 parts of magnesium chloride hexahydrate; 10 parts of kaolin, 0.9 part of lignin, 0.5 part of carboxymethyl cellulose, and 0.6 part of glass fiber.