本文研究了碱法热球磨分解白钨细泥的条件和杂质行为。结果表明,处理含WO_3 33～46％的白钨细泥,在碱用量为理论量2.5～3.0倍、155℃左右、1.5h下,分解率可达98.0～99.3％。分解过程中杂质浸出率远低于经典工艺,并通过实验查明了杂质浸出率低的原因。 In this paper, the conditions and impurity behavior of white tungsten ceramsite by alkaline ball milling were studied. The results showed that the decomposition rate of white tungsten fine sand containing 33-46% WO3 can reach 98.0-99.3% when the amount of alkali is 2.5-3.0 times theoretical amount, about 155 ℃, 1.5h. The leaching rate of impurities in the decomposition process is much lower than that of the classical process, and the reason for the low leaching rate of impurities is confirmed through experiments.