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The slurry of precipitated silica is treated by acidification, filtration, washing, drying and comminuting, the finished product is finally obtained.
所得固体悬浮液经酸化、过滤、洗涤、干燥和粉碎得到白炭黑产品。
Molybdenum trioxide was prepared from the Mo rich desorption solution in steps of purification, acidic precipitation, filtration, washing, drying and calcination.
富钼解吸液再经除杂净化、酸化沉淀、过滤、洗涤、烘干、煅烧，制得三氧化钼产品。
B drunk then recrystallized by filtration, washing, drying derived products.
然后在乙醉中重结晶，经过滤、洗涤、干燥而得成品。
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