Search results
Results from the WOW.Com Content Network
Originally, an urban mine is the stockpile of rare metals in the discarded waste electrical and electronic equipment (WEEE) of a society. [4] Urban mining is the process of recovering these rare metals through mechanical and chemical treatments. In 1997, recycled gold accounted for approximately 20% of the 2700 tons of gold supplied to the ...
Gold cyanidation (also known as the cyanide process or the MacArthur–Forrest process) is a hydrometallurgical technique for extracting gold from low-grade ore through conversion to a water-soluble coordination complex. It is the most commonly used leaching process for gold extraction. [1]
Girardet characterizes this as a natural world process. On the other hand, a 'linear' metabolism which is characterized as an urban world process has a clear resource in-put and waste out-put. Girardet emphasizes that the accelerated use of linear metabolisms in urban environments is creating an impending global crisis as cities grow.
About 150 small-and-medium sized companies do urban mining, according to the Korea Urban Mining Association. At SungEel HiTech, the process is not complex or highly automated.
GTSO Develops Urban Mining Best Practices to Build Innovative Business Model SAN JOSE, Calif.--(BUSINESS WIRE)-- Green Technology Solutions (OTCBB: GTSO) CEO Paul Watson conducted the first of ...
Mine reclamation is the process of modifying land that has been mined to restore it to an ecologically functional or economically usable state. Although the process of mine reclamation occurs once mining is complete, the planning of mine reclamation activities may occur prior to a mine being permitted or started. [1]
GTSO Acquires Urban Mining Company Global Cell Buyers SAN JOSE, Calif.--(BUSINESS WIRE)-- GTSO Resources, the mining subsidiary of Green Technology Solutions, Inc. (OTCBB: GTSO), achieved a major ...
Landfill mining and reclamation (LFMR) is a process which excavates and processes solid wastes which have previously been landfilled. [1] The process aims to reduce the amount of landfill mass encapsulated within the closed landfill and/or temporarily remove hazardous material to allow protective measures to be taken before the landfill mass is replaced.