ALTIN KAZANIMINDA KÝMYASAL PROSESLERÝN ÝNCELENMESÝ

Günümüzde altýn içeren cevher yataklanma tiplerinin, altýn ve diðer deðerli minerallerin kazanýmýnda cevher hazýrlama ve zenginleþtirme yönünden çok önemli rol oynadýðý yapýlan araþtýrmalarla belirlenmiþtir. Son yýllarda, özellikle ülkemizde altýn kazanýmýnda gözlenen geliþim, diðer metallerin üretimine yönelik yeni teknolojik geliþime paralel olarak ilerlemektedir. Altýn kazaným proseslerinin % 15-20’ye yakýnýnýn fiziksel olarak (gravite zenginleþtirme vb.), % 80-85’inin ise kimyasal ve biyolojik prosesler þeklinde uygulandýðý son yýllarda yapýlan araþtýrmalarla belirlenmiþtir. Günümüzde altýn kazanýmýnda özellikle kimyasal ve azda olsa biyolojik proseslerin tercih edilmesinin nedeni ise, uygulamasýnýn kolaylýðý ve ekonomik olmasýndan kaynaklanmaktadýr. Bu araþtýrmada, son yýllarda altýn kazanýmýnda yaygýn olarak uygulanan kimyasal prosesler hakkýnda bilgi verilmektedir.

AN INVESTIGATION OF CHEMICAL PROCESSES IN GOLD RECOVERY

Currently, investigations undertaken on different types of gold bearing ore deposits show that the type of deposit plays an important role for the selection of mineral processing technologies in gold and other precious metals production. During recent years, studies on the discovery and growth of new gold deposits have been gradually progressing in many provinces of Turkey and this will undoubtedly contribute to development of new technologies in other metal mining industries. Recently, it has been established that approximately 15-20 % of gold recovery is realised by physical and 80-85 % of that is carried out by chemical and biological processes. Chemical and sometimes biological processes are prefered due to low cost and simplicity. This study gives a brief description on gold recovery methods with special reference to currently popular chemical processes.