The existing forms of iron and titanium in kaolin have a great effect on the whiteness of kaolin.

高岭土中铁和钛存在的形式对其白度具有重要影响。

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In the flotation of Yangquan bauxite ore to remove iron and titanium, the froth product is the tailings to be discarded.

阳泉铝矾土浮选脱铁、钛泡沫产品为一废弃尾矿，铁、钛杂质含量较高。

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The lunar soil (regolith) contains iron, aluminum, calcium, silicon, titanium, and oxygen, as well as trace amounts of lighter elements such as carbon, sulfur, and nitrogen.

月球的土壤(风化层)含有铁、铝、钙、硅、钛和氧等元素，此外还发现有大量较轻元素如碳、硫和氮等。

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They have worked with oxides of iron, aluminium, zirconium, titanium and copper.

ECONOMIST: Bunker-busting

The Company has interests in mining for aluminum, borax, coal, copper, gold, iron ore, lead, silver, tin, uranium, zinc, titanium, dioxide feedstock, diamonds, talc and zircon.

FORBES: Guru Stocks at 52-Week Lows: VALE, RIO, FB, AAUKY, HPQ