Open AccessStudy of the separation of mineral phases of Waelz clinker for its disposal
Author(s) -
N. N. Orehkova,
О. Е. Горлова,
I. V. Glagoleva
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/962/4/042030
Subject(s) - metallurgy , clinker (cement) , ferrous , zinc , roasting , materials science , slag (welding) , magnesium , waste management , cement , portland cement , engineering
The article presents the results of technological studies on the enrichment of a sample of Waelz clinker from zinc cakes from the Chelyabinsk Zinc Plant by magnetic and flotation methods. The phase and chemical composition of the Waelz clinker of various enterprises is considered, the analysis of the main components of the clinker is carried out. Clinker is a large tonnage solid waste of the zinc sub-industry of non-ferrous metallurgy, has a complex multicomponent composition and is characterized by high contents of iron (36.41%), non-ferrous (Cu 5.28%, Zn 0.93%) and noble (Au 3.8 g / t, Ag 332.2 g / t) metals. Apart from that, there is noticeable content of waste rock, including free carbon (coke breeze), silicone dioxide, calcium oxide, magnesium oxide, alumina. It is shown that, in principle, Waelz-clinker can be separated according to the magnetic flotation scheme without recycle operations to produce four products: a non-magnetic carbon-containing product βC = 21.7%), copper middlings βCu = 11.39-11.69%), flotation coal product βC = 22%) and an iron-containing concentrate in the form of flotation tailings βFe = 60.23%).