直接还原炉是一种钢制容器，在其还原带内具有耐火材料做的炉衬。
The DR furnace is a steel vessel with an internal refractory lining in the reducing zone.
作者就含碳铬矿球团在竖炉内熔融还原冶炼铬铁合金的新工艺进行了试验。
Trials of a new smelting reduction process for ferrochromium manufacture in shaft furnace with carbon bearing chrome-ore pellet was carried out by the authors.
在小型滴管炉内进行了采用生物质废弃物作为再燃燃料还原模拟烟气中NO的热态试验。
Adopting biological wastes as reburning fuel to reduce NO in simulated gas, hot test has been carried out in a small dropper tube furnace.
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