Limitation of lead jarosite formation in the leaching of calcine from high-iron Zn—Pb—Cu concentrates

Author(s):  
M. Pedlík ◽  
J. Jandová
Keyword(s):  
Author(s):  
P.I. Loboda ◽  
Younes Razaz ◽  
S. Grishchenko

Purpose. To substantiate the efficiency of processing hematite raw materials at the Krivoy Rog Mining and Processing Plant of Oxidized Ores using the direct reduction technology itmk3®. Metodology. Analysis of the results of the itmk3® direct restoration technology developed by Kobe Steel Ltd., Japan and Hares Engineering GmbX, Austria, with a view to using it to process Krivbass hematite ores into granulated iron (so-called “nuggets”). Findings. The involvement in the production of hematite ores (oxidized quartzite) of Krivbass with high iron content, but with low magnetic properties for their processing into granular cast iron is grounded. Originality. The use of itmk3® direct reduction technology from Kobe Steel Ltd., Japan and Hares Engineering GmbH, Austria for the processing of Krivbass hematite ores into granular cast iron is justified for the first time. Practical value. The efficiency of the use of hematite ores (oxidized quartzite) has been substantiated, which can significantly reduce the costs in the mining cycle for the economical production of metallurgical products.


1988 ◽  
Vol 13 (4) ◽  
pp. 399-411 ◽  
Author(s):  
D. C. ALLEN ◽  
N. S. CONNOLLY ◽  
J. D. BIGGART

2021 ◽  
pp. 1-21
Author(s):  
Celeste Tsz Hei Cheung ◽  
Anna M Rangan ◽  
Iris Mei Ying Tse ◽  
Wai Hung Sit ◽  
Jimmy Chun Yu Louie

Abstract Objectives To examine the potential effect on iron intake of 7-8 month-old infants if pre-packaged baby foods (PBFs) were used as the sole source of complementary foods. Design: Based on the 7-day recommended feeding plan for 7-8-month-old infants in Hong Kong (moderate iron-fortified rice cereal with home-cooked meals), 24 modelling scenarios were created which comprised of two milk use modes (breastmilk vs. infant formula); three modes of rice cereal use (no rice cereal; non-iron-fortified rice cereal; iron-fortified rice cereal); and four baby foods usage modes (home-cooked meals; low-iron PBFs only; high-iron PBFs only; mixed PBFs). The PBFs were randomly selected in each of the models and substituted the original meals/snacks. The average daily iron intakes of the modelled meal plans were compared against the Chinese estimated average requirement (EAR) and recommended nutrient intake (RNI) for iron. Setting: Modelling study. Participants: N/A. Results: In general, the infant-formula-based complementary feeding pattern (CFP) had higher average daily iron intake when compared with breastmilk-based CFP. The iron intake of all scenarios under the breastmilk-based CFP were below the RNI and EAR, except for the fortified rice cereal meal plans with high-iron or mixed PBFs. For infant-formula-based CFP, the iron intakes were close to or above the RNI regardless of types of PBF or rice cereal used. Conclusions: The inclusion of fortified rice cereal was important in maintaining adequate iron intake for infants, especially for breastfed infants. The replacement of home-cooked meals by low-iron PBFs could potentially put infants at risk of iron deficiency.


Author(s):  
Alireza Aghaiepour ◽  
Shabnam Rahimpour ◽  
Elmira Payami ◽  
Reza Mohammadi ◽  
Reza Teimuri-Mofrad

2015 ◽  
Vol 26 (2) ◽  
pp. 233-234 ◽  
Author(s):  
Nejat Akar ◽  
Yasemin Ardçoğlu ◽  
Zeki Öktem ◽  
Nuran Erduran ◽  
Ibrahim C. Haznedaroglu

Water Science ◽  
2017 ◽  
Vol 31 (1) ◽  
pp. 44-51 ◽  
Author(s):  
Vipin Kumar ◽  
Pawan Kumar Bharti ◽  
Meenu Talwar ◽  
Ajay K. Tyagi ◽  
Pamposh Kumar

2011 ◽  
Vol 66 (8) ◽  
pp. 2387-2401 ◽  
Author(s):  
Thomas Genty ◽  
Bruno Bussière ◽  
Robin Potvin ◽  
Mostafa Benzaazoua ◽  
Gérald J. Zagury

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