نتایج جستجو برای: chalcopyrite

تعداد نتایج: 1059  

Journal: :Metals 2022

Clean energy infrastructure depends on chalcopyrite: the mineral that contains 70% of world’s copper reserves, as well a range precious and critical metals. Smelting is only commercially viable route to process chalcopyrite, where oxygen-rich environment dictates distribution impurities numerous upstream downstream unit operations manage noxious gases by-products. However, unique opportunities ...

2015
Maninder Singh Masanobu Miyata Shunsuke Nishino Derrick Mott Mikio Koyano Shinya Maenosono

In this report, copper iron sulfide nanoparticles with various composition were synthesized by a thermolysis based wet chemical method. These inherently sustainable nanoparticles were then fully characterized in terms of composition, structure, and morphology, as well as for suitability as a thermoelectric material. The merits of the material preparation include a straightforward bulk material ...

Journal: :ACS Applied Materials & Interfaces 2018

Journal: :Boletim da Faculdade de Filosofia, Ciências e Letras da Universidade de São Paulo. Mineralogia 1952

Journal: :E3S web of conferences 2021

Indonesia is a country that has several world-class copper-gold deposits, particularly in eastern Sunda arc. The Hu’u complex prospects the surface as lithocap of extensive epithermal style alteration, but some were detected associated with porphyry beneath surface. study focuses on hydrothermal breccia cement factor influencing system district. methods used mineralogical analysis petrography a...

Journal: :Bioresources 2021

Sulfomethylation of radiata pine kraft lignin was performed using formaldehyde and sodium sulfite under alkaline conditions to determine its potential as a mineral depressant for the separation molybdenite chalcopyrite by froth flotation. Optimal sulfomethylation reaction were 20% (w/w) Na2SO3 at 130 °C 4.2 h, which resulted in with sulfonate content 2.2 mmol/g. Microflotation assays showed tha...

In this paper, the effect of ultrasonic pre-treatment and aeration on the flotation separation of chalcopyrite from pyrite was investigated at different amounts of potassium ethyl xanthate (KEX), as a collector, and pH values. Artificially-mixed samples of chalcopyrite and pyrite were subjected to flotation studies to understand the effect of aeration with or without ultrasonic tre...

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