Synchronous Upgrading Iron and Phosphorus Removal from High Phosphorus …

Metals 2016, 6, 123 2 of 17 Li et al. reported the effect of sodium sulfate on reduction roasting and P removal from high-phosphorus oolitic hematite ore. The results showed that a magnetic concentrate with total iron grade of 92.7% and phosphorus content of 0.09%

Phosphorous removal from wastewater

The use of Neutralac® SLS45 had positive effects in the wastewater treatment procedure. Neutralac® SLS45 has proved to be easy to handle, simple to pump and dose. Depending on dosage rates, Rimex has been able to: 1. Achieve removals of up to 99.9% for …

RECOVERY OF IRON AND PHOSPHORUS REMOVAL FROM GARA DJEBILET IRON …

4 dosage on phosphorus removal, metallisation degree and iron recovery rate were tried and optimised. Further more, phase changes in iron oxides and the distributing features of phosphorus in both reduced and magnetic materials were in vestigated as well.

Phosphorus Removal from Goethitic Iron Ore with a Low …

phosphorus, and the loss of iron units, significantly limits the likelihood of broad application of this technique. While leaching processes with acids or alkalis have been shown to remove phosphorus from iron ores where the phosphorus is present as apatite,13–15)

Removal of fine gangue minerals from Chador-malu iron concentrate …

Phosphorus and silica are the main impurities of the Chador-malu iron ore which need to be reduced to the required values of 0.1 and 2%, respectively. The impurities in the final iron concentrate are mainly due to the presence of fine particles (less than 25 μm) of silica and apatite in the concentrates of magnetic separators and flotation circuits.

Potential for application of alkali roast acid leach technology for removal of phosphorus from iron …

Further, the efficiency of Alkali Roast Acid Leach (ARAL) technology for dephosphorisation of the concentrate is compared with the case when sodium hydroxide was added in alkali leach after roasting. The treatment without additives in roasting resulted in obtaining iron concentrate with 58 % iron and 0.21 % phosphorus, while the ARAL approach yielded concentrate with 63 % iron and 0.09 % ...

US7828976B2

A process for removing phosphorus from wastewater wherein an iron or aluminum salt is added to the wastewater. The iron or aluminum salt results in the precipitation of certain iron or aluminum species that include phosphorus adsorption sites. These iron or ...

Amenability for processing of oolitic iron ore concentrate for phosphorus removal …

(PDF) Processes for phosphorus removal from iron ore - A ...

Floatability studies of wavellite and preliminary results on phosphorus removal from a Brazilian iron …

phosphorus content at the final iron concentrate. A concentrate containing 0.201% P with a mass recovery of 62.31% was achieved when a 150 g/t dosage of …

Floatability studies of wavellite and preliminary results on …

 · However, the phosphorus removal from iron ores other than igneous formations has been a challenge for most of the iron ore operations. This research aims to make a preliminary study of wavellite''s floatability and to evaluate the reduction of phosphorus content by froth flotation from a Brazilian iron ore with a P content of 0.82%.

Characterization studies on Agbaja iron ore: a high-phosphorus …

 · Iron ores with phosphorus content lower than 0.07% P are commercially desired as they are suitable for use in iron production. As a consequence, a lot of research efforts have been focused on phosphorus removal from high-phosphorus iron ore [20, 24, 32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48] in a bid to reduce the P content to acceptable …

Introduction to Phosphorus Removal Study Guide

biological phosphorus removal. Discuss the importance of the wastewater volatile fatty acid (VFA) content in enhanced biological phosphorus removal. Introduction to Phosphorus Removal Study Guide - January 2009 Edition

Biological Phosphorus Removal Processes for Wastewater Treatment

phosphorus removal was found to be fluctuating for unknown reasons. The uncertainty has led to intensive research in this field in the past few decades. Much have been understood since Srinath et al., (1959) reported the observation of biological phosphorus ...

Upgrading iron and removing phosphorus of high phosphorus Oolitic iron …

UpgradIng Iron and reMovIng phoSphorUS of hIgh phoSphorUS oolItIc Iron ore By SegregatIon roaStIng wIth calcIUM chlorIde and calcIUM hypochlorIte J. Xiao a, b, w. ding b, y. peng b, Qi. wu b, Z. chen b, Z. wang b, J. wang b, t. peng b, *a The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology, ...

SciELO

Removal of phosphorus from certain iron ores has proven difficult, especially when phosphorus phases are associated with the iron phases in a very complicated manner.

Removal of phosphorus from iron ores by chemical leaching | …

 · The removal of phosphorus from iron ore by leaching with nitric acid[J]. Hydrometallurgy, 1989(21): 255–275. [8] Mamoun M, ZHANG Yu. A hydrometallurgical process for the dephosphorization of iron ore[J]. Hydrometallurgy, 1989(21): 277–292. [9] Forssberg R

Treatment of membrane concentrates: phosphate removal and reduction …

Chemical precipitation by dosing of sodium hydroxide solution is rapid and removes more than 90% of phosphate and calcium ions. By the removal of calcium ions, chemical precipitation can significantly reduce the scaling potential of NF and RO concentrates. This may …

Optimizing Chemical Phosphorus Removal

Chemicals used for Phosphorus Precipitation Chemical Formula Removal mechanism Effect on pH Aluminum Sulfate (Alum) Al 2 (SO4) 3.14.3(H 2 O) M.W. = 599.4 Alum Reaction with Phosphorus Al 2 (SO 4) 3.14H 2 O+ 2H 3 PO 4 2AlPO 4 + 3H 2 SO 4 + 18H

Evaluation of the Acid Baking Technique to Decrease the Phosphorus Content of the Iron …

Higher amounts of removal of the phosphorus and iron content were demonstrated in samples of iron ore under the leaching time between 1-2 minutes. Who stated that the rapid heating of the ore particles occurred through the application of microwave energy in a transparent matrix, which generates thermal stress of sufficient magnitude to create microcracks along the grain boundaries of the ...

The Removal of Total Phosphorus by Precipitation

phosphorus removal efficiency. There were essentially two types of iron phosphate precipitates, ferrous phosphate (vivianite) and, ferric phosphate. The former compound was white-blue in color with a log Ksp value of –31.6, while the latter precipitate was tan-light

REMOVAL OF PHOSPHORUS THROUGH ROASTING OF OOLITIC …

(1966). The phosphorus content in the iron concentrate is about 0. 6 – 0.8 % and the studies has shown that it is not represented as separable from iron minerals species, Belikov et al (2002), Ionkov et al (2011) but is included in limonite as a solid solution.

How to Remove Phosphorus from Iron Ore? | miningpedia

 · Amenability for processing of oolitic iron ore concentrate for phosphorus removal. Phosphorus from goethite oolitic concentrate was decreased from 0.71% to 0.05%. SEM/EDS images show migration of phosphorus into Si–Na–Al–Ca cementing phases.

Process Design Manual For Phosphorus Removal

4.3 Phosphorus Removal Data for Iron Addition Operating data from several plants utilizing mineral addition before the prynary clarifier for phosphorus removal are shown in Table 4-1. With primary treatment alone, phosphorus removals varied from 60 to 91%. In ...

Phosphorous removal from wastewater

Phosphorous removal processes. The removal of phosphorous from wastewater involves the incorporation of phosphate into TSS and the subsequent removal from these solids. Phosphorous can be incorporated into either biological solids (e.g. micro organisms) or chemical precipitates. Phosphate precipitation. Chemical precipitation is used to remove ...

Removal of sulfur and phosphorous from iron ore concentrate by leaching

SHARIF H., AZIZKARIMI M., 2015, Thermal sulfur removal from iron ore concentrate, Proceeding of Steel Symposium 9, Iron and Steel Society of Iran, 217-223. SOLTANMOHAMMADI V., NOAPARAST M., KOHSARI A.H., ZAMANI F., 2011, Influence of flotation parameters on decreasing sulfur and phosphorus content in the Gole-gohar iron ore concentrate, Physicochem.

Advanced Phosphorus Removal Study Guide

Advanced Phosphorus Removal Study Guide - January 2009 Edition Page 3 of 20 Printed on 09/19/12 Chapter 3 - Monitoring, Pro cess Control, and Troubleshooting Section 2.3 - Biosolids Issues Section 3.1 - Data Understanding & Interpretation needed for ...

Phosphorus Treatment and Removal Technologies

be in the range of 1.2 to 4.0 moles aluminum or iron per mole of phosphorus. The pH value is an important factor for efficient removal of phosphorus using alum or other salts, as the solubility of their precipitates vary with pH. Phosphorus removal is most efficient

Removal of sulfur and phosphorous from iron ore concentrate by leaching …

The current study was focused on the removal of sulfur from iron ore concentrate using chemical leaching technique. Magnetite iron ore concentrate was chosen for this purpose. The results obtained ...

A laboratory study to evaluate the possibility of sulphur and phosphorous removal from iron ore concentrate …

A laboratory study to evaluate the possibility of sulphur and phosphorous removal from iron ore concentrate by leaching Hassan Rezvani Pour1,a, Ali Mostafavi1, Tayebeh Shams Pour1, Ghobad Ebadi Pour2, and Amir Haji Zadeh Omran2 1 Shahid Bahonar University, Department of …