The influence of quartz sand quality on mattes production in flash smelting is analyzed. The way to achieve better economic benefit is approached to in this paper.

分析了闪速冶炼中石英砂品质对冰铜生产的影响，以探求取得更好经济效益的途径。

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USES material not qualified. Such as sand, stone, aggregate quality unqualified; In addition, mostly because cement volume expansion rate is too large (stability serious adverse).

所用材料不合格。如砂、石、集料质量不合格；除此之外，大多数是因为水泥体积膨胀率太大(安定性严重不良)。

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Also used for mechanism artificially system sand, highway, railway, water conservancy, airports, architecture, cement, refractories, metallurgy industries production quality stone.

同时也是用于机制人工制砂、高等级公路、铁路、水利、机场、建筑、水泥、耐材、治金等行业生产优质石料。

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Even the sand wasn't very good quality.

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George Sand's work is of uneven quality.

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Hermit crabs are all over the atypical black sand beaches, where the sand is so dark it exudes an ominous and divinely desolate quality.

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