Sentence examples for secondary ores from inspiring English sources

Vast bauxite developments in Australia, Guinea, and Indonesia have tended to postpone interest in secondary ores elsewhere.

When high-grade bauxite deposits are depleted, substantial reserves of secondary ores will remain to be exploited: laterite deposits in the northwestern United States and Australia, anorthosite in the western United States, apatite and alunite in Europe, kaolinite in the southeastern United States.

Heap bioleaching processes are of increasing interest in the mining industry to recover metals from secondary ores.

Unlike most other ores, there is no secondary ore needed to make a gold bar.

The ore thus enriched forms the secondary, or supergene sulfide, zone and overlies the primary, or hypogene, zone.

It is ordinarily found in the oxidized zone of ore deposits as a secondary mineral or alteration product of primary zinc minerals.

Bioleaching, also referred to as minerals biooxidation, and bioremediation have been widely employed commercially for heap and dump bioleaching of secondary copper sulfide ores, sulfidic-refractory gold concentrates and treatment of acid rock drainage.

This paper discusses a case study on a bioheapleaching system operated commercially at Zijinshan copper plant in China, which applied bioheapleaching SX (solvent extraction)–EW (electrowinning) to treat a distinct secondary copper sulfide ores.

Bioleaching of secondary and low-grade copper ores in heaps and dumps today is a well-established technology.

The study reports a binary matrix modelling and simulation studies to improve the performance of the secondary grinding circuit of UG2 ores.

One exception is the French input output network which has 57 nodes because there are two sectors disconnected from the rest of the economy: uranium and thorium ores, and recovered secondary raw materials.6.6