نتایج جستجو برای: keywords oxide ore

تعداد نتایج: 2145608  

Journal: :Community Literacy Journal 2010

Journal: :Romanticism and Victorianism on the Net: 2007

ژورنال: :پژوهش های دانش زمین 0
زهرا لطفی دانشگاه دامغان علی اکبر حسن نژاد دانشگاه دامغان سید محمود حسینی نژاد دانشگاه دامغان

معدن سنگ آهن تویه دروار در فاصله 45 کیلومتری شمال غرب دامغان، در بخش جنوب خاوری چهار گوش کیاسر قرار دارد.کانه زایی آهن به صورت توده ای همراه با رگه های کلسیت و سیلیس در سنگ های میزبان کربناته با سن تریاس تشکیل شده است. کانه اولیه و اصلی این کانسار مگنتیت بوده است که هماتیت دگرسان شده است. داده های ژئوشیمیایی کانسنگ نشان می دهد عیار آهن از 34 تا 88 درصد وزنی در تغییر است. بررسی-های صحرایی نشان م...

Journal: :Azerbaijan journal of chemical news 2022

Specimens of geopolymeric concrete on basis waste iron ore enrichment Dashkesan’s deposit and bottom ash combustion domestic were obtained. Herewith ratio mixture to binder made up 80:20. At obtaining geoconcrete specimens the concentration in was variated limits 10-50%wt. Normality water solution alkali activator from 1N 8N. Maximal values absorption containing 10, 20, 30, 40 50%wt correspondi...

2014
Thuy Ngoc Le Tok Wang Ling H. V. Jagadish Jiaheng Lu

It is well known that some XML elements correspond to objects (in the sense of object-orientation) and others do not. The question we consider in this paper is what benefits we can derive from paying attention to such object semantics, particularly for the problem of keyword queries. Keyword queries against XML data have been studied extensively in recent years, with several lowest-common-ances...

Journal: :Sustainability 2023

In the direction of sustainable mining solid waste management and eventually zero-waste production, MagWasteVal research program aimed to achieve proper handling massive quantities extractive originating from magnesite mines after enrichment process useful ore. The main objectives this project were both investigation geochemical variables affecting serpentinization (degradation) respected explo...

2016
Mania Kazemi

The demands for increasing the efficiency and lowering the environmental effects in iron and steelmaking industries have given rise to interests in application of direct reduction (DR) processes for production of iron by different gases. These advancements require comprehensive models for better control of the process conditions and the product properties. In the present thesis fundamental aspe...

2012
R. Nouri M. R. Jafari M. Arain F. Feizi

The Mahin area is a part of TaromHashtjin zone that located in west of Qazvin province in northwest of Iran. Many copper and base metals ore deposits are hosted by this zone. High potential localities identification in this area is very necessary. The objective of this research, is finding hydrothermal alteration zones by remote sensing methods and best processing technique of Advanced Spacebor...

Journal: :Community Literacy Journal 2013

Journal: :Community Literacy Journal 2012

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