Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
Read More
Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
Read More
By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
Read More
Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
Read More
Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
Read More
The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
Read More
Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
Read More
The present study is devoted to improvement of the leaching efficiency during phosphorous removal from high phosphorous gravity-magnetic concentrate. Before leaching the concentrate has been subjected to roasting with the addition of either Ca(OH)2 or CaO. The oolitic iron ore is roasted at 900°C for one hour. This reflects in …
Details
The extraction of phosphorus (P) from iron-rich sludge is a critical step for P recovery process. The acidogenic phosphorus release (APR) process was proved as a cost-effective and environmental-friendly method to separate and release Fe–P from iron-rich sludge, including primary sludge and activated sludge.
Details
Autoclave leaching of zinc concentrate (Sphalerite) is an environmentally friendly process compared to roasting, which discharges pollutants into the atmosphere. Due to the amount of iron in the final product, a study …
Details
Gol-E-Gohar iron complex is located 50km southwest of Sirjan City, Iran. Its concentrate contains sulfur and phosphor with grades of 0.5%S and 0.08%P which are higher than the steel industrial ...
Details
The results also show that a solution containing 40 g/L REE; free of phosphorous, calcium and iron can be obtained after reprecipitation of the rare earth phosphate concentrate as sodium rare earth double sulphates followed by alkaline conversion with sodium hydroxide and dissolution in nitric acid.
Details
After leaching for 60 min, the phosphorus extraction almost keeps unchanged. It can be seen that sulfuric acid is the most efficient to remove the phosphorus from the ore. 91.61% phosphorus was extracted after leaching for 20 min with sulfuric acid. And the best result obtained was 93.31% at the time of 60 min.
Details
Abstract. Alkali-leaching and acid-leaching were proposed for the dephosphorization of Changde iron ore, which contains an average of 1.12% for phosphorus content. Sodium hydroxide, sulfuriced, hydrochloric and nitric acids were used for the preparation of leach solutions. The results show that phosphorus occurring as …
DetailsPhosphorus removal of high phosphorus iron ore by gas-based reduction and melt separation [J] Journal of Iron and Steel Research (2010) ... Iron concentrate with an iron grade of 58.72% and iron recovery of 89.32% was obtained via microwave pretreatment at 1050 °C for 2 min, followed by magnetization roasting at 650 °C for 5 …
Details
This gave a concentrate containing about 46% Fe of which about 30% was. ... Improvement of phosphorus removal from iron ore using combined microwave pretreatment and ultrasonic treatment. Separation and Purification Technology, Volume 156, Part 2, 2015, pp. 724-737.
Details
The thermal route will discuss thermal decomposition of phosphate concentrate using submerged arc furnace to produce yellow phosphorus followed by its combustion to produce phosphorus pentoxide and subsequent hydration to produce phosphoric acid. ... step to remove iron rich magnetic materials prior to flotation. The …
Details
Iron phosphate (FePO 4), ... In contrast, while still effective in iron removal, the sulfuric acid leach residue retains a slightly higher Fe content of 21.40 % and a marginally lower Ti concentration of 33.42 %. ... (TiO 2) with purity of 61.57 % can be used as the concentrate of artificial rutile, and the iron leaching rate is over 96 % ...
Details
The results showed that the powdery reduced iron produced contained 91.37% iron and 0.14% phosphorus, and the iron recovery was 92.81%, which is an ideal for steelmaking.
Details
In the present study, roasting-induced phase change and its influence on phosphorus removal via leaching has been investigated for high-phosphorus iron ore. The findings indicate that phosphorus in the ore is associated with goethite and exists mainly in amorphous Fe3PO7 phase. The phosphorus remains in the amorphous …
Details
The results showed that 99% of phosphate was removed within 60 min of electrolysis at an initial pH (ipH) of 6, inter-electrode distance (ID) of 0.5 cm, current density (J) of 6 mA/cm 2, initial concentration of phosphate (IC) of 100 mg/L, and minimum operating cost of 0.503 US $/m 3. The electrochemical cell produced enough H 2 gas to …
Details
These DFT findings were validated by experimental flocculation results which show that a final concentrate of 64.4% Fe, 4.2% Al 2 O 3, and 1.9% Silica with a yield of 56% can be ... phosphorus, and sulfur. Often, a chemical separation is the only method able to remove phosphorus from iron ores. Phosphorus can occur as phosphorus …
DetailsSimultaneous nitrogen, phosphorous, and hardness removal from reverse osmosis concentrate by microalgae cultivation Water Res. 2016 May 1;94:215-224. doi: 10.1016/j ... such as relatively low nitrogen and phosphorus removal efficiencies as well as the requirement of an extra process for hardness removal. This study proposes a …
Details
A magnetic concentrate with total iron grade of 92.7% and phosphorus content of 0.09% was obtained from an oolitic hematite ore containing 48.96% iron and 1.61% phosphorus when reduced in the ...
Details
The removal rate of metallic Zn reached ≥ 99.6%. (2) Experimental studies showed that the phase transformations of iron and zinc during the reduction process were ZnFe 2 O 4 →Fe 2 O 3 →Fe 3 O 4 →FeO and ZnFe 2 O 4 →ZnO→Zn (g), respectively. Metallic zinc in ZnFe 2 O 4 phase was reduced, condensed and collected after escaping …
Details
The selective HCl leaching method was used to remove phosphorus from high phosphorus iron ores. The hydroxyapatite in high phosphorus iron ores was converted into soluble phosphate during the process of HCl leaching. ... However, some organic phar- maceutical residues easily enter into the concentrate, which will result in …
Details
The medium phosphorus iron ore concentrate (hereafter referred as iron ore concentrate) used in this work was provided by the Bayan Obo iron ore in Baotou, China. ... Tang HQ, Guo ZC, Zhao ZL (2010) Phosphorus removal of high phosphorus iron ore by gas-based reduction and melt separation. J Iron Steel Res Int 17(9):1–6. …
Details
Phosphate removal can be also obtained by iron oxides from mineral processing industry (Ajmal et al., 2018) or by calcium meta-silicate minerals (Obradović et al., 2017). Ligand exchange and surface precipitation are the predominant sorption mechanisms with removal capacities depending on the by-product composition, size, …
DetailsThe present study of phosphorus removal from an unroasted iron ore via alkaline leaching method examined the possibility of dephosphorization from goethite ore at low temperature. The iron ore concentrate used in this study is an oolitic type of iron ore consisting primarily of goethite, in which phosphorus does not form a discrete mineral ...
Details
Phosphorus can be removed via the formation of an insoluble compound containing phosphate and iron, such as FePO4; however, it was necessary to determine the conditions under which phosphorus can ...
Details
The tin could be volatilized and removed effectively from the tin-bearing iron concentrate while roasted in an atmosphere of SO2 and CO. The reduction of SO2 by CO occurred in preference to the SnO2 and Fe3O4, and the generated S2 could sulfurize the SnO2 to an evaporable SnS, which resulted in the tin volatilization. However, the Fe3O4 …
Details
The optimal experimental conditions for achieving a high iron recovery and removal ratio of phosphorus were a temperature of 1200 °C, reduction time of 120 min, and C/O ratio of 1.2. Under these conditions, the iron recovery and removal ratio of phosphorus of the magnetic products reached 95.28% and 70.02%, respectively.
Details
A phosphate concentrate of good quality cannot be achieved because of the complex mineralogical association and interlocking of iron with phosphorous bearing minerals. ... (2016) Phosphorus removal and iron recovery from high-phosphorus hematite using direct reduction followed by melting separation. Miner Process Extr …
Details
The removal of phosphate was found higher at acidic and neutral pH compared to basic conditions. The nanoparticles exhibit good selectivity and adsorption efficiency for phosphate in presence of co-existing ions such as Cl −, SO 4 2− and NO 3 − with some inhibition effect by CO 3 2− .
Details
Biosorption is a physiochemical process that occurs naturally in certain biomass which allows it to concentrate passively and bind contaminants onto its cellular structure. Every biosorbent had different physical, chemical and biological properties for iron and phosphorous removal from water. ... The percentage removal of …
Details
Enter the email address you signed up with and we'll email you a reset link.
Details
Sofol is a well-known crusher and grinding mill manufacturer that offers equipment and solutions for customers from aggregates, mining and mineral grinding industry.
You can leave your message here, we'll send you an Email immediately.
Online ChatCopyright ©2000- 2024 Shanghai Sofol CompanySitemap
PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
GET QUOTE