In this study, the concentration of chromite minerals by amine flotation of a chromite tailing (slime) with content 23.84% Cr2O3 from Yeşilova-Burdur (Turkey) was investigated.
EFFECTS OF RE-ROUTING OF CONCENTRATE STREAMS IN THE ... to batch and continuous industrial froth flotation with and without concentrate ... while the chromium content of oxide origin increased in the concentrates after ... In order to optimise the grinding circuit of its UG-2 concentrator, Impala SA. Chat Online
The flotation concentrate, is subjected to ultrafine grinding in 8 parallel FLS VXP 2500 ultrafine grinding (UFG) mills and undergoes a two stage preoxidation process at controlled pH of 10.2 ...
Besides, some mines will also use flotation and flocculation flotation methods. But the most popular and common used mining method is by gravity and magentic separation for the chrome ore mining equipment. The selection of chrome ore mining equipment is closely related to the physical and chemical properties of chromium ore.
concentrate containing 41.0% Cr 2O3 and 2.5% SiO 2 with a chromium recovery of 77.0%. In the second technique [U.S. Pat. No. 3,473,656], chromite ore flotation is achieved with an undeslimed ore at a pH of 11.5 using a long chain fatty acid collector. The pH of the pulp is adjusted with NaOH with the pulp being dispersed by sodium
The collectors used in flotation testing are listed in table 3. Flotation of Chromite Procedure. Bench-scale flotation tests were performed on chromium ores using a Denver laboratory flotation machine. Locked-cycle flotation tests were performed on the gravity concentrate using both the Denver laboratory machine and a larger Denver No. 8
Chromium values are recovered from pulverized chromite ore by agitating and aerating an aqueous pulp of said pulverized chromite ore containing an amine collector at a pulp acidity less than 2.5; and recovering a chromite containing froth as a concentrate.
greater effect on the chalcopyrite flotation than the other parameters. The recovery and grade of chalcopyrite and pyrite were obtained as 79.95%, 49% and 5.3%, 7.98% using the Aero 407, respectively. Under the optimum conditions, the grade of final concentrate increased from 0.94% to 21.3% with three cleaner stages.
Jan 19, 1982· Chromium values are recovered from pulverized chromite ore by agitating and aerating an aqueous pulp of said pulverized chromite ore containing an amine collector at a pulp acidity less than 2.5; and recovering a chromite containing froth as a concentrate.
The final flowsheet that was developed for chromium removal is shown in Figure 25.13. The concentrate was scrubbed with alkaline followed by desliming. The deslimed concentrate was subjected to chromium flotation followed by a single cleaning stage.
The final flowsheet that was developed for chromium removal is shown in Figure 25.13.The concentrate was scrubbed with alkaline followed by desliming. The deslimed concentrate was subjected to chromium flotation followed by a single cleaning stage.
chromium concentrate - Mining Equipment, Grinding Equipment . VitaDigest.com Eidon Ionic Minerals Chromium Concentrate 2 oz. Eidon Ionic Minerals Chromium Concentrate 2 ozChromium is a trace mineral essential for the proper ...
Flotation of chromite as pre-treatment of olivine before. The high performance observed with chromite-enriched olivine allows a multistage flotation process from low-chromite minerals blends to be designed Conclusion: The lower performance with native olivine was …
Effect of pH on chromium flotation from an ilmenite concentrate. The final flowsheet that was developed for chromium removal is shown in Figure 25.13 . The concentrate was scrubbed with alkaline followed by desliming.
Aside from the gravity method (in various modifications), flotation methods are used (separately or in combination with gravity methods), as well as concentration in a strong magnetic field. Magnetic concentration in a weak field is also used to extract magnetite from chromium ore before flotation or to extract it from chromium concentrate ...
concentrate containing 41.0% Cr 2O3 and 2.5% SiO 2 with a chromium recovery of 77.0%. In the second technique [U.S. Pat. No. 3,473,656], chromite ore flotation is achieved with an undeslimed ore at a pH of 11.5 using a long chain fatty acid collector. The pH of the pulp is adjusted with NaOH with the pulp being dispersed by sodium
Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.
Project: extraction of chromium from its ore Country: South Africa Mineral type: chromite ore Capacity: 25TPH. Mineral property: Grade of chrome concentrate in raw chromite ore is 28% – 36%. Customers requirement: The grade of the processed chromium concentrate needs to be 42% – 45% Feed particle size: 150mm---Read more---
In an effort to further concentrate chromium, a sample of flotation tails was given a chlorine leach at a controlled redox potential of +550 millivolts in the presence of copper. In this small batch test, the concentrate was upgraded from a chromium-nickel ratio of 0.48:1 to 1.08:1. Chromium extraction was 9.3 percent (results listed in table 20).
of chromium bearing spinels in the furnace when treating UG-2 materials that restricts the chromium content of the feed to the furnace. When the present work was started about a decade ago, it was estimated that an extra 2–3 per cent of PGM might be recovered if 10 per cent chromite were allowed into the concentrate during flotation. Furthermore,
May 10, 2018· Selective recovery of chalcopyrite–galena ore by flotation remains a challenging issue. The development of highly efficient, low-cost, and environmentally friendly depressants for this flotation is necessary because most of available reagents (e.g., K 2 Cr 2 O 4) are expensive and adversely affect the environment.In this study, ferric chromium lignin sulfonate (FCLS), which is a waste ...
BF Flotation Cell, Principle of Floatation, Froth . BF flotation cell is widely used for separating non ferrous metal, black metal, noble metal, non metal mineral, raw body and materials of chemical industry, like gold flotation process, which are subject to roughing and cleaning of …
chromium flotation concentrate; Flotation of Chromite Ore 911metallurgist. Petrographic examination of the pH 2.0 flotation products showed olivine to be present in the concentrate while serpentine remained in the tailings. To increase the selectivity of Mouat ore to amine flotation of chromite, a selective olivine depressant must be found.
The beneficiation of chromite ore is mainly by re-election method. Shakers and jigs are often used in production. Sometimes re-election concentrates are re-selected with weak magnetic separation or strong magnetic separation to further increase the grade and ferrochrome ratio of chromium concentrate.
Chromium is one of the modern industry's essential element and important raw material for the production of special steel and ferrochrome alloys. ... Recovery of ultrafine particles below 75 μm size from process tailings by flotation technique is the subject of recent investigations. ... To achieve a consistent concentrate production of 50 ...
Chromium is an important example. Apparent annual consumption of chromium-containing materials is on the order of 400,000 mt of contained chromium metal. However, domestic production has occurred only sporadically, mostly in times of national emergency, and none has been produced since 1962. ... Flotation tests to concentrate chromite in the ...
Flotation of Chromite Procedure. Bench-scale flotation tests were performed on chromium ores using a Denver laboratory flotation machine. Locked-cycle flotation tests were performed on the gravity concentrate using both the Denver laboratory machine and a larger Denver No. 8 machine. The latter machine was used to prepare large samples of low ...
Chromium Mining Processing Equipment Flow Chart . Chromite concentrate with 45-52% of Cr2O3 2. And wastes could be with 3-6% of Cr2O3 – we (customer) will treat wastes by chemicals, get the again chromite concentrate (30-35% of Cr2O3, other SiO2) and back this chemical concentrate …
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