The optimum reaction conditions by orthogonal experiment are as fallows: The moles proportion of material is 1:0.65 (the former is zinc sulfate and the later is borax and boracic acid), temperature is 95 ?, reaction time is 4h.

• 找出最适宜的工艺条件是：配料比(硫酸锌与硼砂+硼酸的摩尔比)1：0.；65，液固比(水与固体反应物的摩尔比)为6