madencilik

Bilimsel Madencilik Dergisi

2564-7024 2587-2613

TMMOB Maden Mühendisleri Odası

10.30797/madencilik.580147

HYDROMETALLURGICAL PROCESSING OF NICKEL LATERITES- A BRIEF OVERVIEW ON THE USE OF SOLVENT EXTRACTION AND NICKEL/COBALT PROJECT FOR THE SEPARATION AND PURIFICATION OF NICKEL AND COBALT

NİKEL LATERİTLERİN HİDROMETALURJİK İŞLEMİ-NİKEL VE KOBALT AYIRIM VE SAFLAŞTIRMASI İÇİN SOLVENT EKSTRAKSİYON KULLANIMI VE NİKEL KOBALT PROJELERİNE KISA BİR BAKIŞ

https://orcid.org/0000-0002-1680-5482

Kursunoglu

Sait

https://orcid.org/0000-0001-5260-2589

Kaya

Muammer

06 01 2019

58 2 131 144 12 21 2018 03 11 2019

1960

Bilimsel Madencilik Dergisi

In this study, a brief overview of the solvent extraction (SX) application for the separationand purification of nickel and cobalt in hydrometallurgical processing of laterite nickel ores ispresented. This paper consists of two parts: firstly, the SX of nickel and cobalt from sulphateleach solutions is described; and secondly, the development of hydrometallurgical plants forthe processing of laterite nickel ores that involve solvent extraction technique is discussed. Themost important extractants are shortly given in the first part of the study. It is seen that theextraction and separation of nickel and cobalt from the impure leach solution of laterite nickelores can be performed by either using a single extractant system that is called as a direct solventextraction (DSX) or a mixture of two or more extractant which is known as a synergistic solventextraction system (SSX). Mixed sulphide precipitation (MSP) and mixed hydroxide precipitation(MHP) processes are mentioned. This paper is also addressed advantage and disadvantages ofeach extraction system. It is shown that capital investment expenditure, operational investmentexpenditure and mineralogical content are the most important factors that can affect the selectionof the appropriate hydrometallurgical process for lateritic nickel ore.

Bu çalışmada, lateritik nikel cevherlerinin hidrometalurjik işlemlerinde nikel ve kobalt ayırmave saflaştırılmasında kullanılan solvent ekstraksiyon (SX) yöntemi için kısa bir değerlendirmeyapılmıştır. Bu çalışma iki bölümden oluşmaktadır. Sülfat liç çözeltilerinden nikel ve kobalt solventekstraksiyonu ilk olarak tanımlanmıştır. Solvent ekstraksiyon tekniğinin bulunduğu lateritik nikelcevherlerinin işletimi için geliştirilen hidrometalurji tesisler ikinci olarak tartışılmıştır. En önemliekstraktantlar ilk bölümde kısaca verilmiştir. Laterit liç çözeltisinde bulunan safsızlıklardan nikelve kobalt ayırma ve saflaştırma işlemi ya tekli ekstraktant sistemi olarak adlandırılan direkt solventekstraksiyon (DSX) ya da iki veya daha fazla ekstraktant karışımından oluşan sinerjistik solventekstraksiyon (SSX) yöntemleriyle gerçekleştirilebileceği görülmüştür. Karışık sülfür çökeleği(MSP) ve karışık hidroksit çökeleği (MHP) işlemlerinden bahsedilmiştir. Bu makale aynı zamandaher bir ekstraksiyon sisteminin avantaj ve dezavantajlarını ele almaktadır. İlk yatırım maliyeti,işlem maliyeti ve minerolojik yapının lateritik nikel cevheri için uygun bir hidrometalurjik yöntemseçimini etkileyebilen en önemli faktörler olduğu görülmüştür.

Laterite Nickel Cobalt Purification Solvent extraction

Laterit Nikel Kobalt Saflaştırma Solvent ekstraksiyon

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