نتایج جستجو برای: keywords oxide ore

تعداد نتایج: 2145608  

2003
P. O’Shaughnessy B. W. Lee

The practice of manganese ferroalloy smelting has traditionally been based on utilising oxide ores which typically contain a high level of manganese. This preference for oxides has even been extended to the modification of natural carbonates into nodulized oxides. However smelting practices developed over the past 30 years have created a market for natural manganese carbonate ores, driven in pa...

2002

Iron occurs mainly as oxide ores, though it is also found in smaller quantities as its sulfide and carbonate. These other ores are usually first roasted to convert them into the oxide. On a world scale the most important ore is haematite (Fe2O3), but in New Zealand the starting materials are magnetite (Fe3O4) and titanomagnetite (Fe2TiO4). The oxides are reduced with carbon from coal, through t...

Journal: :international journal of iron & steel society of iran 2008
h. amini mashhadi a. r. rastgoo j. vahdati khaki

in this study, the isothermal reduction of iron oxide pellets, made of iranian chadormalo, gole-gohar, and sangan iron ores, was investigated in the temperature range of 900-1100°c. tabas, pabdana, babnizoo, karmozd, and shahrood domestic coals were used as reductants. parametric studies were performed and the effects of such factors as temperature, average particle size of iron ore and coal fi...

ژورنال: :پژوهش های دانش زمین 0
سحر صمدی دانشگاه شهید بهشتی ایرج رساء دانشگاه شهید بهشتی محمد معانی جو دانشگاه بوعلی سینا، همدان

کانسار آهن خسروآباد در شمال شرقی سنقر و 1 کیلومتری روستای خسروآباد قرار گرفته است. آنومالی های آهن این منطقه در چند نقطه در داخل سری های ولکانیکی و آهکی به نام سری سنقر قرار دارد، که تحت تاثیر دگرگونی ناحیه ای تا حد شیست سبز دگرگون شده اند. نتایج بررسی های انجام شده، نشان می دهد که کانه اصلی کانسار هماتیت و کمتر مگنتیت است که به صورت توده ای، پرکننده ی فضای خالی، جانشینی رگه ای و دانه ای کانی س...

2016
Mei Yang Wending Xiao Xiang Yang Patrick Zhang

The processing mineralogy characteristics of an oxidized lead-zinc ore from Sichuan were studied systematically using numerous modern instruments. Results showed that lead and zinc oxide content in the ore exceeded the minimum industrial grade, and also included a relatively high concentration of silver and iron. This ore is composed of many different minerals. Major zinc-containing minerals in...

Journal: :Journal of MMIJ : journal of the Mining and Materials Processing Institute of Japan 2022

As pyrometallurgical technologies to smelt nickel metal from the oxide ore, melting reduction process using an electric furnace (Elkem) and semi-melting a rotary kiln (Krupp-Renn) with saprolite ore as raw material have been established operated commercially. However, in future, it is expected that will be difficult because of decline grade necessary develop new adaptable lower processing ore.

Journal: :Journal of the Japan Institute of Metals and Materials 1979

Journal: :Journal of the Mining and Metallurgical Institute of Japan 1985

2012
M. Das B. C. Meikap

Iron ore and coal are the two major important raw materials being used in Iron making industries. Usually ore fines containing around 5% Alumina are rejected due to higher proportion of alumina. Therefore, a technology or process which may reduce the alumina content by 2% by beneficiation process will be highly attractive . In addition fine coals with ash content is used nearly 12% is directly ...

Journal: :iranian journal of earth science 0
s. saadat department of geology, faculty of sciences, islamic azad university, mashhad branch (university of colorado, boulder co.) m. ghoorchi research & exploration center for ore deposit of eastern iran, ferdowsi university of mashhad

different types of iron oxides deposits have been identified along the khaf – dorouneh volcanic and plutonic belt in north east of iran. kuh-e-zar is one of these ore deposits known as fe- oxide gold deposit. the main purpose of this paper is to detect and discriminate the iron oxide minerals in this area based on the etm+ data. data processing has been done by envi (environment for visualizing...

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