Copper processing plant
Iran Fei Bike copper processing project is Xinhai mine site visits to Iran when he was Iran Fei Bike know, after communicating with the Xinhai, to make the contribution to the expansion of the second phase copper beneficiation.
Xinhai and Iran Fei Bike copper contract was signed after two alterations, through on-site visits and the ore samples for analysis and found that the mine is a large metal ore, mainly chalcopyrite, followed by a red iron ore, pyrite and trace limonite like. In addition to the main copper, iron, also have associated precious metal gold, silver, and platinum. Gangue minerals are mainly biotite, feldspar, quartz and other minerals. A detailed look at the composition of mineral ore Almost Scale.
Almost ore mineral component scale
|Almost volume (%)||1.90||24.48||0.14||0.16||0.24||Micro||Micro||Micro|
|Almost volume (%)||25.17||14.15||16.15||11.29||3.02||1.18||2.03|
Iran Fei Bike copper in copper ore grade at 0.6-0.8%, mainly brass, followed by a bornite, copper blue. Chalcopyrite general was it shaped granular, some were star-shaped, individual semi-self-like, single grains and aggregates disseminated in silicate and carbonate gangue among its general dissemination size of 0.037 ~ 0.825 mm, few in the 0.018 ~ 0.074mm, the maximum of 1.48 ~ 2.22 mm. Through the above analysis, we found that the mine was prone to monomer dissociation. When the grinding fineness of 70%, the monomer dissociation degree can reach more than 93%, it is easy to choose ores.
Xinhai concentrator through the first phase of the original investigation, the beneficiation of three sections of a closed-circuit crushing process, crushing final particle size of -12mm, grinding through two consecutive grinding to -200 mesh, 70%, and then by a roughing, a sweeping election, twice featured obtain copper concentrate. COPPER job rougher tailings through a magnetic obtain crude concentrate regrinding to 92% -200 mesh fineness, then twice Featured obtain iron ore; concentrate dewatering is dense, filtered two dewatering operations, final product moisture content of 14% copper concentrate, 10% aqueous iron ore, "the design process.
Grinding beneficiation process design of the second phase of reconstruction Xinhai production line based on the original issue of added selection of a job, soon changed three times the original selection of featured twice, and in the election of a new iron Circuit Taiwan vertical pulse oscillating magnetic field separator, in order to further improve the iron ore. Then adding a overflow-type ball mill QYZ2100 × 3000 for high frequency vibration sieve further finely ground product. These technical measures to make the iron ore grade increased from the original 61% to 63%.
In the flotation process, the second phase of reconstruction chosen an advanced large-scale KYF type flotation machine, and achieved very good flotation index in the actual application process.
By the second phase of a scientific and rational reconstruction, put into production, a month which reached design capacity, three months after the second election plant processing capacity exceeded 5200t / d, to reach 130% of design capacity. And the final design of tailings by Xinhai dry tailings discharge process, which dewatering, water content as low as 15% or less.
Through this two improvements Iran Fei Bike copper flotation stage from crushing to have been greatly improved, as follows:
Broken final product -6mm 74%; copper flotation grinding fineness of -200 mesh ≥75%, iron ore fineness -200 mesh ≥98%; copper tailings election fineness -200 mesh ≥68%, iron fine ore grinding fineness -270 mesh ≥83%; copper, iron sorting recovery and concentrate grade index, synchronized with the yearly budget management assessment indicators; copper, iron ore concentrate containing 10-12% moisture.