US 2019/0256947 A1

Processing of clinker containing polymetallic raw materials

(22) 22.02.2018

(43) 22.08.2019

(57) Disclosed are methods and systems for processing clinker containing iron and non-ferrous metals for extraction of those metals. The processing comprises pretreatment of clinker resulting in a removable carbon-containing foam phase, forming a metal-containing cake. Melting of the cake is then performed in the absence of air delivery and in the presence of carbon, resulting in phases of slag, metal, and matte. Melting may occur while maintaining a mass ratio of iron to carbon of no greater than 14:1, such that cast iron forms instead of sponge iron. The metal and matte phases, containing non-ferrous metals and iron, are then exposed to further dissolution, filtration, and salting out to extract the non-ferrous metals and iron. Byproducts of various stages of the process are also recycled into earlier stages or further processed to extract additional copper, iron, and other non-ferrous metals.

(71) Branch RGP NC KPMS RK CHMI named after ZH. Abishev, Karaganda (KZ)

x

Related articles:

Issue 4/2020 PL425827 (A1)

Iron-bearing composite added to raw-material flour in the Portland clinker production process

(22) 05.06.2018 (43) 16.12.2019 (57) The subject of the application is an iron-bearing composite used in the production of Portland clinker. This composite is a mixture that contains fine-grained...

more
Issue 5/2019 WO 2019/038148 A1

System and method for producing cement clinker

(22) 15.08.2018 (43) 28.02.2019 (57) A bypass system is used in the system and method for producing cement clinker, wherein a portion of a furnace exhaust gas occurring in a furnace is channeled off...

more
Issue 12/2018 WO 2018/153678 A1

Installation for producing cement clinker and method for operating such an installation

(22) 08.02.2018 (43) 30.08.2018 (57) The invention relates to a method for operating an installation (10) for producing cement clinker, said installation having a pre-heater (12) for pre-heating...

more
Issue 4/2021 PL431077 (A1)

Method of producing Portland clinker using de-ironed steel slags

(22) 09.09.2019 (43) 22.03.2021 (57) The subject of the invention is a method of producing Portland clinker with the use of de-ferrous steel slags in a rotary kiln, inclined downwards from the...

more
Issue 4/2019 US 2019/0039949 A1

Process and device for cement clinker production

(22) 24.09.2018 (43) 07.02.2019 (57) In a process for the production of cement clinker, in which raw meal is preheated in a preheater (3) using the hot exhaust gases from a clinker kiln, and the...

more