Sulfation Roasting of a Bornite Flotation Concentrate to Optimize Silver Extraction in a Ferric Chloride Leach

2015 ◽  
pp. 3-10
Author(s):  
Ryan J. Foy ◽  
Steve Lloyd ◽  
Brandon Steinborn ◽  
Jerome P. Downey
Keyword(s):  
Ferric Chloride ◽  
Flotation Concentrate ◽  
Sulfation Roasting ◽  
Silver Extraction

scholarly journals Technology of gold and silver extraction from refractory gold-arsenic flotation concentrate of Ikkijelon deposit (Republic of Tajikistan)

2019 ◽  
Vol 23 (1) ◽  
pp. 179-186
Author(s):  
Odilzhon Rakhmanov ◽  
◽  
Aleksandr Aksenov ◽  
Gennady Mineev ◽  
Khisrav Davlatov ◽  
...  
Keyword(s):  
Flotation Concentrate ◽  
Refractory Gold ◽  
Silver Extraction

Challenges of arsenic removal from municipal wastewater by coagulation with ferric chloride and alum

2020 ◽  
Vol 725 ◽  
pp. 138351 ◽  
Author(s):  
Jie Ge ◽  
Biswarup Guha ◽  
Lee Lippincott ◽  
Stanley Cach ◽  
Jinshan Wei ◽  
...  
Keyword(s):  
Ferric Chloride ◽  
Municipal Wastewater ◽  
Arsenic Removal

Treatment of a complex landfill leachate with peat

1978 ◽  
Vol 5 (1) ◽  
pp. 83-97 ◽  
Author(s):  
Robert D. Cameron
Keyword(s):  
Chemical Oxygen Demand ◽  
Ferric Chloride ◽  
Landfill Leachate ◽  
Metal Removal ◽  
Oxygen Demand ◽  
Treatment Method ◽  
Manganese Concentration ◽  
Chemical Pretreatment ◽  
Iron Manganese

The use of cheap, locally available peat as a treatment method for landfill leachate was investigated by passing leachate through plexiglass columns filled with an amorphous-granular peat. Preliminary adjustment of pH showed that reducing pH to 4.8 dramatically reduced adsorption. Increasing the pH to 8.4, metal removal was increased owing to filtration of precipitated metals. The best adsorption of metals occurred at the 'natural' pH of 7.1. Manganese was found to be the limiting pollutant. At the 0.05 mg/ℓ maximum acceptable manganese concentration 94% of the total metals were removed, requiring 159 kg of peat per 1000 ℓ of leachate.Resting the peat for 1 month did significantly increase removal capacity.Desorption of some contaminants occurred when water was percolated through the peat. The desorption test effluent was not toxic to fish although iron, lead and COD (chemical oxygen demand) exceeded acceptable values.Chemical pretreatment using lime and ferric chloride achieved significant iron, manganese and calcium removals. Chemical pretreatment followed by peat adsorption offered no advantage other than reducing toxicity to fish.Peat treatment alone was effective in reducing concentrations to a level that was non-toxic to fish.

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