Leaching of ilmenite ores by acidic chloride solutions ... Highlights HCl leaching of ilmenite ore was found to be very effective in high chloride solution. Optimised leaching were at 5-7.5 M HCl with a total Cl of 500g/L, 3.3% pd, 70°C, 4-6h. Ti and Fe leaching were ~99% and 96% for ore A and 94% and 93% for ore B respectively. READ MORE
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Request PDF | On Feb 25, 2020, Mengen Lei and others published Effective Separation and Beneficiation of Iron and Chromium from Laterite Sulfuric Acid Leach Residue | Find, read and cite all the ...
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The reduced ilmenite is subjected to pressure leaching with concentrated hydrochloric acid (18%–20% wt.) at 145°C for several hours so as to dissolve iron. The leached solids are filtered, washed, and calcined at about 850°C to give the final synthetic rutile product, which has a characteristic porous structure ( Fig. 3.12 ).
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The beneficiation of phosphate ores containing carbonate gangue by conventional techniques such as physical separation methods or flotation is very difficult due to the similarities in physico-chemical properties of constituent minerals present in the system. Carbonate-rich phosphate deposits can be processed by calcination and by …
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DOI: 10.1016/J.HYDROMET.2003.08.001 Corpus ID: 95574087; Reductive leaching of ilmenite ore in hydrochloric acid for preparation of synthetic rutile …
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2 from Panzhihua ilmenite through sulfuric acid pressure leaching was investigated. Specifically, the effect of reaction temperature, H 2SO 4 concentration, acid/ore ratio, leaching time, and the concentration of Fe2+ on the pressure leaching process were systematically examined. The resulting Ti-rich materials were characterized, and the …
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In this study, the production of synthetic rutile from tin ore beneficiation by-products from Bangka Island, Indonesia contained about 46% of TiO 2 via pre-oxidation and reductive leaching in ...
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Several leaching studies about lateritic nickel extraction have been performed using different solutions, such as sulphuric acid111213141516 17 18192021, hydrochloric acid [2,15,2223242526 nitric ...
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The present paper is concerned with studying a rapid and economic process to upgrade Rosetta ilmenite concentrate into synthetic rutile through simultaneous iron …
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The utilization of laterite sulfuric acid leach residue has always been a challenge in the metallurgical industry. ... {Effective Separation and Beneficiation of Iron and Chromium from Laterite Sulfuric Acid Leach Residue}, author={Meng Lei and Bao-zhong Ma and Yong-qiang Chen and Wei Liu and Bao Liu and Dongya Lv and Wenjuan …
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In the industrial production of TiO2, the sulphate process and chloride process are the two common methods utilized for extracting TiO2 from ilmenite and rutile, respectively. 2.1. Sulphate Process Statistical data reveal that 98% of manufacturers in China use the sulphate process for the production of TiO2 [33].
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3. Analysis methods and process chemistry3.1.. Analysis methodsIn the most of leaching investigations, the phosphate rock samples were crushed and then sieved to collect various size fractions for analysis of combined water and organic matter, P 2 O 5 content, CO 2 content or loss on ignition (LOI) and acid insoluble residue (AIR). In the …
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Series of the leaching experiments were carried out under variations of HCl concentration (5–8 M), leaching temperature (70–100 °C), solid/liquid ratio (1/5–1/20 g/mL), ilmenite ore ...
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Naturally available ilmenite mineral is being used as a starting material to produce titanium based products that have wide applications. Transformation of ilmenite to different titanium based materials by strong and weak acid, and base digestion, is discussed. Effects of temperature, concentration of acid/base, reaction time on …
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The iron content present in the ilmenite is removed by leaching the ore with hydrochloric acid. The enriched TiO 2 mineral thus obtained is called synthetic rutile …
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The utilization of laterite sulfuric acid leach residue has always been a challenge in the metallurgical industry. The current treatment involves deep-sea landfills, which leads to considerable environmental pollution and resource wastage. In this work, an effective method is proposed to recover iron and chromium from sulfuric acid leach residue. The …
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Then next process is water leaching and acid leaching. The result of this study is that the TiO 2 obtained from each acid leaching is hydrochloric acid leaching producing powder pigment with 94.189% TiO 2, acetic acid leaching producing 37.099% TiO 2, citric acid leaching producing 41.480% and hydrochloric acid leaching without …
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Leaching is an efficient technique and has been used for the beneficiation of minerals with great process control [41], [49], [106]. The calcareous phosphorite can also be exalted using acid leaching. In acid leaching, carbonate gangue is dissolved in lean solution leaving the phosphates in the residue.
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In situ leach (ISL) technology is an innovative and recently utilised mining alternative. It is recognized as having economic and environmental advantages when properly employed by knowledgeable specialists to extract uranium from suitable sandstone type deposits. This report brings together information from several technical disciplines that ...
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economic evaluation of this resource. The primary goal of this project was to prove the technical feasibility of producing high quality iron oxide and titanium dioxide (TiO 2) …
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2 from ilmenite Banten using caustic fusion, acid leaching using hydrochloric acid, and the use of citric acid were conducted. Caustic fusion is conducted with ratio …
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Primary beneficiation was successfully performed prior to dissolution of manganotantalite (sample A) and ferrotantalite (sample C) samples obtained from two different mines in the Naquissupa area, Mozambique. Magnetic separation removed the majority of iron and titanium, whereas H2SO4 leaching removed a large portion of …
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This chapter outlines the basic steps involved in mining, processing, and reclamation that might be suitable for uranium ore deposits in the Commonwealth of ia. For uranium ore deposits, the choice of mining methods and processing options is very deposit-specific and dependent on many variables such as the quality and quantity of the …
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When finely ground ore (−74 μm) was reacted upon for 2 h with a mixture of sulfuric acid (10.8 M) and nitric acid (5.3 M) in the ore to acid weight ratio of 1:3 at 200 °C, almost complete ...
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The objective of any business is to maximize the value derived from the commodity produced. There is a point where additional expenditure does not return a value sufficient to justify the additional expense. The treatment of high acid-consuming copper ores is a perfect example of this principle. In this case, the relationship of acid …
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A new collector prepared using decyloxy-propyl-amine (DPA) and α-bromododecanoic acid (α-BDDA) at a molar ratio of 1:1 increased the difference in the recovery of spodumene (82.14%) and feldspar (32.48%) significantly [53].The difference in recoveries of spodumene and feldspar was 27.47% while using DPA only, whereas the …
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The optimal conditions for the beneficiation process were as follows: H2SO4 concentration 40 wt. %, acid/ore mass ratio 2:1, reaction temperature 150 °C, and reaction time 3 h. Thus, a Ti-rich ...
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The demand for rare earth elements for everyday technology and applications has initiated much research into the extraction and recovery of these rare earth elements. An otherwise unknown group of minerals, eudialyte is a zircon silicate consisting of rare earth oxides (REO), contained in a unique mineral structure and represented by a …
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chloride leaching and solvent extraction system parameters for the ilmenite concentrate. The test program focused on the leach efficiency and extraction efficiency of the target elements; iron and titanium. When re-grinding the ilmenite concentrate to 80% passing 37 microns, a leaching efficiency of 89% for iron and 88% for titanium was achieved.
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