Extraction of metal ions from the leach liquor of a titaniferous magnetite by D2EHPA. Aqueous phase: leach liquor as received; pH adjusted using NaOH; potential maintained at <0.6 V using SO 2. Organic phase: 20 vol.% D2EHPA in Kerosol 200. Conditions: 25°C; O:A=1. Download : Download full-size image; Fig. 3.

In the case of smaller ilmenite processing plants, the regeneration of the acid is not economical and warrants alternate methods of using the ferrous leach liquor. …

An extraction efficiency of 97% total titanium was obtained by 1.5 M TBP in kerosene from initial 10g/L ilmenite leach liquor at 25 ± 2oC in a single extraction stage. Iron was effectively ...

The most recent major nickel laterite project, namely Vale Inco's Goro nickel project, was commissioned during 2012. Nickel is also recovered via direct SX (no prior precipitation Evaluation of a Versatic 10 acid/NicksynTM synergistic system for the recovery of nickel and cobalt from a typical lateritic leach liquor

CONSTRUCTION AND AGRICULTURAL PLANT SALES. CALL US. 07492 333333. ONLINE ENQUIRIES. Start Here. FOLLOW US. LEAVE A REVIEW. Post Review. Anchor 1. ... Highly recommend J R Leach Ltd. CONTACT. Enquiries. For any enquiries or questions, please call: 07492 333333 or fill out the following form.

Finally, the mini-plant investigation showed that the extraction efficiency of titanium was about 80% and the stripping efficiency of titanium could not be improved above 60%. The purity of the obtained titanium solution was average of 80% from a H 2 SO 4 leach liquor. However, the study by Sole et al. also reveals that there are many ...

recovery. The process produces fractions that can be directly routed back to a steel plant (leach residue), a zinc electrowinning process (pregnant leach solution, PLS), and a lead smelter (lead sulfate, PbSO 4 precipitate). Moreover, zinc separation by solvent extraction from citric acid leach solution originating from EAF was per-

The iron(III) was efficiently extracted by the mixture of 1-octanol and 1-decanol (70%) with 2-undecanone (30%) from hydrochloric bauxite leach liquor at an O:A ratio = 2-4:1 at an iron(III ...

The four controlled variables studied were: the concentrations of ethanol, hydrochloric acid, and ferrous chloride in the leach liquor, and the quantity of oxygen injected into the liquor. The extraction of iron was shown to occur in two stages: an initially rapid dissolution of iron, decomposing the 45% Fe2 O 3 ilmenite into an impure rutile ...

by neutralizing the acid leach liquor or by leaching oxide copper with ammonia, but neither solution was economical. a molecule that extracted copper well from typical dump leach liquors (pH ~1.8) had to be built. The reagent LIX 64, containing the ketoxime LIX Copper recovery using leach/solvent extraction/electrowinning technology:

Flowsheet for the nickel recovery from real sulphate heap leach liquor. lute sulphuric acid (1 M). The leach liquor was first pre-neutralized by CaCO3 to pH = 1.1, at ambient temperature. ... G., 1971. Treatment of zinc …

11 Citations. 1 Altmetric. Explore all metrics. Abstract. Naturally available ilmenite mineral is being used as a starting material to produce titanium based products …

With such a rotary filter, the liquor-to-solids ratio used in the leaching step could be decreased from 10:1 to 5:1. The large batch of leached slag was dried in an oven at 150° C and sampled for chemical …

The roasted EAF dust employed in citric acid leaching was obtained from the Ovako Imatra Oy Ab steel plant in Finland. The details about the raw material and the pre-treatment (roasting), as well as citric acid leaching, were published in the previous work [5], [6]. Table 1 presents the solution composition achieved after leaching of roasted EAF …

Iron powder as a reducing agent was added to ilmenite in the milling stage and the mechanically activated mixture was subjected to acid leaching. ... was performed on the leach liquor to separate dissolved Fe (the major impurity) from Ti, which led to 83% extraction recovery of Ti. Mechanical activation processes on ilmenite concentrate were ...

1.0 TAILINGS LEACH PLANT, AN OVERVIEW. From inception, Tailings Leach has been developed in three stages. The operation started with leaching of low-grade tailings using strong sulphuric acid followed by solution recovery and cementation of copper. The capacity then was about 1000 tonnes of copper per month.

Utilization of Roast-Reduced Ilmenite Leach Liquor for Ferrous Chloride Production by Hydrothermal Process. June 2020. Transactions of the Indian Institute of …

Section snippets Experimental. The leach liquor, which was used during experimentation, had been produced by heap leaching of Greek nickel oxide ore with dilute sulphuric acid (1 M).The leach liquor was first pre-neutralized by CaCO 3 to pH. = 1.1, at ambient temperature.. The average composition of the pregnant solution is given in …

Section snippets Solvent extraction of rare earths from the leach solution. The solvent extraction of rare earth from the leach liquor not only concentrates the rare earths, but also separates rare earths from main impurities, moreover the raffinate solution can be recycled adding some leaching agents back to leaching new ores (Zhu, 1991).

In 1960, Welt and Smutz used tributylamine (TBA) and di-n-octylamine (DOA) solvents for the recovery of uranium and thorium from Egyptian monazite sulfate leach liquor. Gupta et al. in 2002 reported the use of Cyanex 923 for uranium, thorium and lanthanides (Ce, Y) from the digested leach solution of monazite in HNO 3 with HF and …

Accepted Date: 25.03.2020. ABSTRACT. This paper investigates a method for separation and puri cation of thorium from leach liquors. containing rare-earth elements (REE). Iron, which causes ...

tron microscopy (TEM) images, the mean grain size of the ilmenite/Fe nanocomposite was about 30 nm at the medium energy level sample. Finally, solvent extraction by tributyl phosphate (TBP) was performed on the leach liquor to separate dissolved Fe (the major impurity) from Ti, which led to 83% extraction recovery of Ti.

(a) leaching the titaniferous material with a leach solution containing sulfuric acid and forming a leach liquor that includes an acidic solution of titanyl sulfate (TiOSO …

Chingola, Zambia. The Nchanga Tailings Leach Plant is located in close proximity to Chingola, a town in the Copperbelt Province of Zambia. This plant functions as a surface mining operation, specifically targeting the extraction of minerals from tailings. The term "tailings" refers to the residue left behind after the primary mining process ...

The recovery of titanium from the sulphuric acid leach of a titaniferous magnetite ore by solvent extraction has been investigated in two mini-plant campaigns. …

ABSTRACT Pretreatment of ilmenite are required to enhance leaching efficiency of ilmenite. Strong acid leaching is promising in terms of the purity of the …

Ilmenite ore leach liquor: 2TiO 2 •3H 2 O (seed), H 2 O: Not applicable: 80–100: 60: Not reported: Not reported >99.5: ... The EAF slag leach liquor was prepared using the pyro-hydrometallurgical process developed in the authors ... It should be noted here that the proposed figures are only estimates and obtained given a plant operating …

Finally, the mini-plant investigation showed that the extraction efficiency of titanium was about 80% and the stripping efficiency of titanium could not be improved above 60%. The purity of the obtained titanium solution was average of 80% from a H 2 SO 4 …

The pre-leach thermal treatment converts most of the contained iron back to the ferrous state, and transforms the pseudorutile phase, Fe 2 Ti 3 O 9, i.e., Fe 2 O 3.3TiO 2 (JCPDS-ICDD card # 47-1777), to crystalline ilmenite and rutile. The treatment consisted of roasting in air at 950°C for 30 min, then reducing in hydrogen at 850°C for 15 min, …