一是从原料玉米中提取玉米胚芽，玉米胚芽经预处理、压榨、浸出得玉米毛油，毛油经精炼得精制玉米油或一级玉米油。
One method was that corn germ was separated from corn, and then maize oil was prepared by pretreatment, press, extraction and refining from corn germ.
GC分析结果表明：采用减压蒸馏及乙酸乙酯重结晶并用的方法精制的TMP纯度接近于试剂级TMP。
It is reveal by GC analysis that the purity of the TMP, treated by reduced pressure distillation and recrystallization in acetic ester, approximates to that of the reagent grade TMP.
介绍以粗硫酸镍制备电池工业用精制硫酸镍和电镀级硫酸镍的生产工艺和技术参数。
The production process and technical parameters of making high quality refined nickel sulphate for cell industry & electroplate industry by using rough nickel sulphate as raw materials are described.
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