Slag processing with RHEWUM screening machines
Classifications for Ores
Ores can be differentiated into sulfidic and oxidic ores as well as into black stel ore, non-ferrous metal ores, light metal ores and precious metal ores. Chalkopyrite, galenite and sphalerite are belonging to the sulphuric ores; chromite, cassiterite and magnetite are oxidic ores. Silica based ores are nepouite, beryl and spodumene. Black steel ore e.g. is iron ore (magnesite resp. magnetite and haematite resp. specular iron), manganese ore (pyrolusite resp. manganese dioxide and psilomelane), chromite ore (chromite), titanium ore (ilmenite and rutile), nickel ore (nemepouite and pendlandite), cobalt ore (skutterudite resp. smaltine and cobaltite resp. cobalt glance), tungsten ore (wolframite and scheelite), molybdenum ore (molybdenite) as well as vanadium ore (vanadinite and carnotite). Besides the black steel ores there are the non-ferrous metal ores. To this family belong: copper ore chalcosite resp. copper glance and chalkopyrite resp. copper pyrite), lead ore (galenite resp. lead glance and cerussite resp. white lead ore), zinc ore (sphalerite resp. blackjack and smithsonite resp. zinc spar) as well as tin ore (cassiterite and stannite resp. bell metal ore).
Another familiy of ores are the light alloy ores: aluminium ore (gibbsite resp. diaspore), magnesium ore (magnesite and kieserite), beryllium ore (beryl and phenakite) and lithium ore (spodumene and zinnwaldite). Precious metal ores are gold ore (solid gold or calaverite), silver ore (solid silver or argentite resp. silver glance) and platinum ore (solid platin or sperrylite). Due to the kind of deposit in which they occur the above listed ores are often not economically mineable. The most important traded ores are: argentite, bauxite, barite, bastnaesite, beryl, bornite, chalcopyrite, chalcosite, chromite, cobalt glance, columbite-tantalite, galena, gold, hematite, ilmenite, cassiterite, magnetite, molybdenite, monazite, pitchblende, pentlandite, scheelite, wolframite, blackjack and cinnabar.
Slags are generated in metallurgical production and manufacturing processes. During the smelting process a homogenous slag cover is produced which due to their low density swims on the molten metal bath as slag blanket. The slag is separated from the metal in the melt flow and then casted for cooling. Afterwards the slag is crushed and screened in the slag processing plant regarding to the following application.
Slags can be differentiated as follows:
Blast furnace slag is generated during the production of raw iron in the blast furnace, slag from steel work or converter slag, electric furnace slag from the electric arc furnace, stainless steel slag from stainless steel production and metal slag which means slag from copper, zinc, lead and chromium ore.
Homogeneous slags are used as secondary raw material for the production of various materials. E.g. granulated blast furnace slag is used as an additive for cement, the so called slag sand Another application is the use in the production of mineral fertilizer. In road construction granulated slag like coarse crushed slag, crushed slag sand and slag gravel can be used as base layer.
RHEWUM's specialists will gladly advise you on slag processing! Just contact us.