与冶炼矿石一样，石油提炼是一个从未加工的原料中除去杂质的过程。
Refining, like smelting, is a process of removing impurities from a raw material.
明矾石是高岭土中难以除去的有害杂质，高岭石也是明矾石矿石中的有害杂质。
Alunite is a harmful impurity which is difficult to remove from kaolinite and so is kaolinite in alunite ore.
石灰石吸咐了铁矿石中的杂质，形成浮在较重的铁水表面上的流动渣。
The limestone absorb impurity from the ore and form a fluid slag which floats on the surface of the heavier molten iron.
石灰石从矿石中吸收杂质。
前言：采用石墨炉原子吸收法，测定了铁矿石、球团矿和烧结矿中微量杂质砷。
It was reported that trace amounts of arsenic in iron ores, spherical ores and sintering ores were determined by GFAAS.
采用石墨炉原子吸收法，测定了铁矿石、球团矿和烧结矿中微量杂质砷。
It was reported that trace amounts of arsenic in iron ores, spherical ores and sintering ores were determined by GFAAS.
石灰石吸附了铁矿石中的杂质，形成浮在较重的铁水表面上的流动渣。
The limestone absorbs impurity from the Ore. and forms a fluid slag, which floats on the surface of the heavier molten iron.
为了使铁跟杂质分离，铁矿石必须经过冶炼。
For separating iron from the impurities the iron ore must be melted.
明矾石是高岭土中难以除去的有害杂质，高岭石也是明矾石矿石中的有害杂质。
Alunite is a harmful impurity which is difficult to remove from kaolinite, and so is kaolinite in alunite ore.
矿石的有用组分多样，有害杂质少，金矿物主要为自然金。
The useful composition in the ore is multiplicity, the harmful composition is lack and the major mineral is nature Gold.
矿石的有用组分单一，有害杂质少，金矿物主要为自然金。
The useful composition in the ore is simple, harmful composition is less and the major ore mineral is natural gold.
铁矿石从地下开采出来时具有不同含量的杂质。
Iron ore, as mined, contains varying quantities of impurities.
铁矿石从地下开采出来时具有不同含量的杂质。
Iron ore, as mined, contains varying quantities of impurities.
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