purified solution

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.

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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。

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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。

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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.

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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。

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