在SEM下观察发现， 钝化处理后镁粒表面生成了致密的钝化层，且包裹均匀。
It is founded under SEM that the passivated coating of magnesium powder is compact and even.
鉴于钒钛铁水的特点，采用镁粒喷吹脱硫工艺，其基建投资少，脱硫工序费用低，因而最为适宜合理。
In view of special properties of the hot metal, it is most reasonable and suitable to use jet desulfurization technology with magnesium pellet agent, on accou…
大吨位的熔制，过热现象是普遍存在的，但不会形成大量粒硅镁石。
In large scale melting pro-ess, superheating often occurs, but chondrodite forms only in a small quantity.
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