N. J. BOLIN, J. E. SUNDKVIST
A leaching process for base metals recovery often generates considerable amounts of impurities such as iron and arsenic into the solution. It is a challenge to separate the non-valuable metals into manageable and stable waste products for final disposal, without losing the valuable constituents. Boliden Mineral AB has patented a two-stage precipitation process that gives a very clean iron-arsenic precipitate by a minimum of coprecipitation of base metals. The obtained product shows to have good sedimentation and filtration properties, which makes it easy to recover the iron-arsenic depleted solution by filtration and washing of the precipitate. Continuous bench scale tests have been done, showing the excellent results achieved by the two-stage precipitation process.
@article{bb7df1e7-3b51-4ed4-9282-ee68f2ce0e53,
title={Two stage precipitation process of iron},
author={N. J. BOLIN and J. E. SUNDKVIST},
year={2026},
language={en}
}TY - JOUR TI - Two stage precipitation process of iron AU - N. J. BOLIN AU - J. E. SUNDKVIST PY - 2026 LA - en ER -
Printed circuit boards (PCBs) from electronic gadgets at the end of their useful life period are currently being dumped in landfills or incinerated, c
The leachability tests for manufacturing scrap TV boards (STVB) have indicated the release of metals beyond the limit levels with potential problems f
Christian Kabange
This document describes the purification and precipitation circuit for cobalt at TFM, from LG raffinate through to cobalt hydroxide production. It exp
C.N. Mpinga, J.J. Eksteen
Platinum Group Metals (PGMs), often with associated gold, have very few occurrences where they are present in an ore deposit at economically extractab
Sadia Ilyas, Jae-chun Lee
The feasibility of biometallurgical processing for recovering heavy metals, precious metals, and rare earth elements from waste electrical and electro