半工业试验对浮选金精矿和高品位原矿平均金浸出率达86．01％。
The average leaching recovery of gold reaches 86.01% from high grade raw ore and flotation concentrate of gold in pilot test.
半工业试验和工业试验表明，微泡浮选柱能从浮选尾矿中回收微细粒级白钨。
Pilot and full scale column flotation experiments were carried out, and interrelated results were obtained.
对传统的格利雅法合成四丁基锡工艺进行了改进，并报道了其半工业试验的效果。
Improvement on the Grignard method is made and the semi industry experiments are reported.
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