purified solution

After gotten rid of the salts, saturate KOH solution was added in filtrate at 20 ℃ in 15 min, potassium ferrate(ⅵ) was separated out and purified by process of recrystallization, washing organic contaminants and drying.

除盐后，滤液中加饱和KOH溶液，20℃下反应15min，即可析出粗产品高铁酸钾；经重结晶、有机物洗涤、干燥等后处理工序纯化后得到高纯度高铁酸钾。

As the solution to be purified is heated, its vapors rise to the fractionating column.

当要被提纯的液体受热时, 它的蒸汽上升到分馏柱.

The FeSO_4 obtained by reduction is purified, adding to NH_4OH-NH_4HCO_3 solution containing organic additives, precipitated and finally washed and then calcined at 900 ℃ for 2 hours. The calcined product is washed using dilute nitric acid and hydrofluoric acid, obtaining high-purity α-Fe_2O_3.

还原后得到的硫酸亚铁经过净化除杂，滴加到含有适量有机添加剂的沉淀剂NH4OH-NH4HCO3中，沉淀洗涤干燥后900℃煅烧2h，煅烧产品再用稀硝酸和氢氟酸洗涤，得到高纯球形-αFe2O3。

The manganic manganous oxide is prepared from the purified manganese sulfate solution using hydrogen peroxide as oxidant under alkali medium of ammonia solution.

研究了从软锰矿制备硫酸锰，在碱性溶液中，以过氧化氢为氧化剂，制备高比表面优质四氧化三锰的新工艺。

Treatment of purified wood pulp with 18 % sodium hydroxide solution produces alkali cellulose.

用18%氢氧化钠溶液处理纯化木浆生产出碱性纤维素.