№ 2, 2019Download the article
Material composition and technological aspects of ores of Dagkesaman gold field (Lesser Caucasus)
National Geological Exploration Service of MENR of Azerbaijan 100(А), B.Agayev str., Baku, AZ1073: ): email@example.com
On the example of technological ore samples (~ 150 kg) taken from ores of the upper horizons of the deposit, the material composition (chemical and mineralogical), as well as textural and structural forms of the connection of gold with various minerals that make up the ore, the composition and degree of oxidation of ore minerals, technological (metallurgical) features of this gold ore minerals have been described in the paper. The main industrialized valuable component in the test is the gold ore, which is characterized by native form. Varieties, as well as the main dimensions of the present particles of native gold, a significant number of which is characterized by small forms (0.005-0.01mm) have been identified and considered. The ore minerals are mostly supergene forms of iron compounds, and the host rocks are characterized by basalts porphyry structure modified by autometasomatosis. It has been established that gold in the ore under study using such methods as gravity, flotation and hydrometallurgy (cyanidation) is characterized by relatively easy recoverability while degree of material grinding reaches 80-85% <0.075 mm. According to the results of the experiments performed, the corresponding mode of the most effective combined technological scheme was developed and recommended. The latter is based on the preliminary gravity of ore crushed to a certain size in the corresponding hydrocyclone and the subsequent agitation method of cyanidation obtained by the rough gravity concentrate. The recommended technology, confirmed by relevant laboratory experiments, provides the possibility of extracting up to 94.5% of gold from ore to the leach solution for subsequent use in the production of Dore alloy ingots.
Keywords: Lesser Caucasus, gold ore, material composition, refining technology, gravity, flotation, hydrometallurgy, cyanidation
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