The process of two-stage hydrogen refining for the preparation of grinding oil was studied.
以常二线馏分油为原料油，研究了加氢精制生产研磨油的工艺。
The invention relates to an application method of hydrogen sulfate imidazole ion fluid in copper electrolysis refining.
本发明是硫酸氢咪唑离子液体在铜电解精炼中的应用。
Refinery gas is mostly methane and hydrogen produced as a by-product in the many refining processes.
气是许多炼油过程中产生的副产品，主要是甲烷和氢气。
The effect of gas bubble size, injection rate and blowing time on removal of hydrogen and inclusion in liquid steel during refining has been studied and analyzed by theory calculation.
通过理论计算研究和分析了钢液气泡直径、吹气量和吹气时间对精炼时去氢和夹杂的影响。
The goods must have a role in the refining , can help to remove the hydrogen in liquid aluminum and inclusions.
本品具有一定的精炼作用，能协助去除铝液中的氢气及夹杂物。
Synopsis: Some problems on zone refining of silicon without crucible by wet hydrogen treatment are discussed.
本文讨论了在湿氢条件下，进行硅的无坩埚区域提纯时，所遇到的几个问题。
The hydrogen content in the molten heavy rail steel was measured in every stages from LD tapping to mould(without the VD refining process).
研究了包钢重轨钢从转炉出钢到结晶器各个工序过程（未经VD真空处理）钢液中氢含量变化。
According to smelting condition of Baotou iron and steel group, VD refining process should be adopted to reduce the hydrogen content in the heavy rail steel.
根据包钢重轨钢的冶炼条件，采用VD真空处理降低钢液中氢含量是完全必要的。
The PSA method and its process for making oxygen, purifying hydrogen, drying air, refining CO and CO 2, and its application in iron and steel industry are introduced.
介绍了变压吸附制氧，提纯氢，空气干燥，提纯一氧化碳，二氧化碳工艺流程和在钢铁行业中的应用。
The utility model relates to a vacuum melting-refining furnace for producing neodymium, iron, boron and rare earth permanent magnetic alloy material and rare earth hydrogen-storage alloy material.
本实用新型涉及一种生产钕铁硼稀土永磁合金材料及稀土储氢合金材料的真空熔炼炉。
The utility model relates to a vacuum melting-refining furnace for producing neodymium, iron, boron and rare earth permanent magnetic alloy material and rare earth hydrogen-storage alloy material.
本实用新型涉及一种生产钕铁硼稀土永磁合金材料及稀土储氢合金材料的真空熔炼炉。
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