Study on Process Concentrating of a Certain Limonite Ore in Xinjiang

2011 ◽  
Vol 189-193 ◽  
pp. 1722-1725 ◽  
Author(s):  
Jin Xia Zhang ◽  
Fu Sheng Niu ◽  
Shu Xian Liu ◽  
Yi Miao Nie
Keyword(s):  
Iron Ore ◽  
Reverse Flotation ◽  
Test Results ◽  
Iron Concentrate

Based on the study on the characteristics of a limonite ore, research was made on single reverse flotation for Xinjiang limonite ore. The test results indicate that we can obtain an iron concentrate grading about 54.07％ at a recovery of 62.65％ from an iron ore assaying around 41.85％ iron，rather good metallurgical performances.

Experimental Research on Beneficiation Process for a Specularite Ore

2011 ◽  
Vol 304 ◽  
pp. 387-390 ◽  
Author(s):  
Wei Zhi Wang ◽  
Jin Rui Zhang ◽  
Chun Guang Yang
Keyword(s):  
Magnetic Separation ◽  
Experimental Research ◽  
High Intensity ◽  
Iron Ore ◽  
Separation Process ◽  
Gravity Separation ◽  
Clay Material ◽  
Reverse Flotation ◽  
Test Results ◽  
Iron Concentrate

An iron ore contains specularite and hematite which are its main iron minerals. And its main gangue minerals are specularite, part of the clay material and a small amount of quartz.Tests are made on the ore by adopting processes including gravity separation, high intensity magnetic separation, high intensity magnetic-gravity separation and high intensity magnetic - reverse flotation. The test results show that the separation process of high intensity magnetic-reverse flotation can obtain an iron concentrate grading about 66.62% at a recovery of 58.38％ from an iron ore assaying around 35.00% iron, rather good metallurgical performances.

Development and Application of Complex Flashing-Field Magnetic Cleaner

2014 ◽  
Vol 1073-1076 ◽  
pp. 2177-2188
Author(s):  
Wen Li Jiang ◽  
Yi Min Zhang ◽  
Guang Quan Liang ◽  
Xi Wen Xia
Keyword(s):  
Magnetic Field ◽  
Iron Ore ◽  
Magnetic System ◽  
Operating Cost ◽  
Reverse Flotation ◽  
Test Results ◽  
Iron Concentrate ◽  
Magnetite Ore ◽  
Ore Dressing

In order to enhance the quality of iron concentrate from magnetic separation, reverse-flotation technology is often applied in iron ore dressing plant. However, this technology has disadvantages in operating cost, energy consumption and environmental protection (Zhao Chunfu, Wu Jianghua &Wang Hui ,2005). Developing innovative equipment to process magnetite ore more-effectively is a way to get rid of these disadvantages of reverse flotation and improve the quality of iron concentrate. This paper describes the development of Complex Flashing-Field Magnetic Cleaner, a new kind of equipment based on the principle of combination of separation in magnetic field and separation in gravity field (Hao Shuhua & Jiang Wenli,2002). This innovative equipment possesses a tailor-made magnetic system and has the characteristics of a magnetic field which can strengthen the formation of magnetic agglomerations and the dispersion of gangue minerals to improve the quality of separation. The automatic control system developed specifically for this equipment can further increase the accuracy of separation and stabilize the process. Test results showed that this equipment is reliable in operation, economically beneficial and it has large potential of application.

An Experimental Research on Cationic Reverse Flotation of Anshan-Type Iron Ores

2020 ◽  
Vol 980 ◽  
pp. 359-367
Author(s):  
Zhong Hang Cheng ◽  
Dian Bing Zhu ◽  
Shu Juan Dai ◽  
Ahmed Sobhy
Keyword(s):  
Iron Ore ◽  
Spectroscopic Analysis ◽  
Iron Ores ◽  
Reverse Flotation ◽  
Iron Concentrate ◽  
Mineral Separation ◽  
Pulp Temperature ◽  
Reagent Consumption ◽  
Depressing Agent

The mineral processing technology of Anshan-type iron ores has been developed in a rapid speed in recent years, and the combined flowsheet at the core of anionic reverse flotation has become a mainstream in the beneficiation of Anshan-type iron ores in china. With the successful application of this combined flowsheet, some obvious problems are also emerging. Such as high requirement of pulp temperature, complex reagent system, high cost of reagent consumption and so on. In view of this,we have carried out an experimental study on the separation of Anshan type iron ore by cationic reverse flotation . A new collector (named KBD) which is mixed amines have been developed . On this basis, the actual mineral separation experiment is carried out in the laboratory.With KBD as the collector,and starch and sodium hexametaphoshate as the depressant, has resulted in an iron concentrate of 68.16% and recovery rate of 89.71%. The determination of the electrokinetic potential and the infra-red spectroscopic analysis show that KBD can effectively and priorly adsorbed to the surface of quartz, and has greatly change the elecrtokinetic potential of quartz.The interaction of the depressing agent has increased the differences of the floatabilities in quartz and hermitite and changed the surface electric property so that the effective separation has been realized.

scholarly journals Selective Separation of Hematite by a Synthesized Depressant in Various Scales of Anionic Reverse Flotation

Minerals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 124 ◽  
Author(s):  
Arash Tohry ◽  
Reza Dehghan ◽  
Saeed Chehreh Chelgani ◽  
Jan Rosenkranz ◽  
Omid Rahmani
Keyword(s):  
Iron Oxide ◽  
Iron Ore ◽  
Selective Separation ◽  
Reverse Flotation ◽  
High Quality ◽  
Main Hypothesis ◽  
Iron Concentrate ◽  
Ore Processing ◽  
The World ◽  
Apatite Group

Demand for high-quality iron concentrate is significantly increasing around the world. Thus, the development of the techniques for a selective separation and rejection of typical associated minerals in the iron oxide ores, such as phosphorous minerals (mainly apatite group), is a high priority. Reverse anionic flotation by using sodium silicate (SS) as an iron oxide depressant is one of the techniques for iron ore processing. This investigation is going to present a synthesized reagent “sodium co-silicate (SCS)” for hematite depression through a reverse anionic flotation. The main hypothesis is the selective depression of hematite and, simultaneously, modification of the pulp pH by SCS. Various flotation experiments, including micro-flotation, and batch flotation of laboratory and industrial scales, were conducted in order to compare the depression selectivity of SS versus SCS. Outcomes of flotation tests at the different flotation scales demonstrated that hematite depression by SCS is around 3.3% higher than by SS. Based on flotation experiment outcomes, it was concluded that SCS can modify the pH of the process at ~9.5, and the plant reagents (including NaOH, Na2CO3, and SS gel) can be replaced by just SCS, which can also lead to a higher efficiency in the plant.

Test Research on HIMS-Reverse Flotation of Oolitic Hematite of Longyan Iron Mine

2013 ◽  
Vol 753-755 ◽  
pp. 24-27 ◽  
Author(s):  
Shu Xian Liu ◽  
Jin Xia Zhang ◽  
Miao Chen ◽  
Zhi Shuai Xu
Keyword(s):  
Magnetic Separation ◽  
Reverse Flotation ◽  
Test Results ◽  
Flotation Reagents ◽  
High Gradient Magnetic Separation ◽  
Iron Concentrate ◽  
Iron Mine ◽  
Hematite Ore ◽  
Reverse Floatation ◽  
Oolitic Hematite Ore

In order to better exploit and utilize the oolitic hematite ore resource in Zhangjiakou region, staged grinding-separation process consisting of high intensity magnetic separation(HIMS) and reverse floatation was adopted in the beneficiation test on the regionally representative oolitic hematite ore of Longyan Iron Mine, Xuan Stee1. The test results indicate that，with Slong pulsating high gradient magnetic separation as HIMS equipment，with NaOH，starch，CaO and TS as flotation reagents，and at a grind of 65％ -200 mesh for the primary grinding and 95％-200 mesh for the secondary grinding，an iron concentrate grading 62.34％ and having an iron recovery of 53.07％ can be achieved after two stage HIMS and one roughing—one cleaning reverse flotation.

Study on Process Concentrating of a Certain Low Grade Hematite Ore in Hebei

2013 ◽  
Vol 295-298 ◽  
pp. 3080-3084
Author(s):  
Su Juan Yuan ◽  
Zhi Yong Shen ◽  
Da Yong Zhang
Keyword(s):  
Magnetic Separation ◽  
High Intensity ◽  
Low Grade ◽  
Reverse Flotation ◽  
Test Results ◽  
Iron Concentrate ◽  
Low Intensity ◽  
Hematite Ore

It was determined through a large amount of beneficiation test to adopt stage grinding-low intensity magnetic separation-high intensity magnetic separation-reverse flotation as the principle beneficiation flowsheet for a certain hematite in Hebei. The test results indicate that we can get iron concentrate with a grade of iron 65.19% and a recovery of iron 63.17% respectively at iron concentrate 21.90%, the primary grinding of 67.54%-200 mesh and secondary grinding of 97.70%-200 mesh.

Experimental Research on High Intensity Magnetic Separation - Reverse Flotation of a Low-Grade Specularite Ore

2011 ◽  
Vol 304 ◽  
pp. 391-394
Author(s):  
Wei Zhi Wang ◽  
Jin Rui Zhang ◽  
Chun Guang Yang
Keyword(s):  
Experimental Research ◽  
High Intensity ◽  
Iron Ore ◽  
Low Grade ◽  
Grinding Process ◽  
Reverse Flotation ◽  
Magnetic Separator ◽  
Total Recovery ◽  
Iron Concentrate ◽  
Iron Grade

An iron ore contains specularite and hematite which are its main iron minerals and carbonates such as calcite which are its main gangue minerals. The ore is very apt to produce slime in the grinding process，leading to a deteriorated beneficiability. The rough iron concentrate can be obtained by using high gradient magnetic separator to discard tailings with the grinding fineness of 95% -0.074mm. Then the rough concentrate is treated by reverse flotation to produce a final concentrate with the operation recovery of 66.49% and the iron grade of 66.12%,and the total recovery of iron could reach58.70%.

scholarly journals The Characteristics of Iron Ore Slimes and Their Influence on The Flotation Process

Minerals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 675
Author(s):  
Neymayer Pereira Lima ◽  
Klaydison Silva ◽  
Thiago Souza ◽  
Lev Filippov
Keyword(s):  
Particle Size ◽  
Iron Ore ◽  
Corn Starch ◽  
Reverse Flotation ◽  
Flotation Process ◽  
Froth Stability ◽  
Iron Ore Slime ◽  
Iron Ore Slimes ◽  
Main Effects

The flotation has been successfully applied to process the iron ore for the particle size (Ps) from 10 µm up to 150 µm. The presence of the slimes (Ps < 10 µm) is harmful on the reverse flotation of quartz, so they are usually prior removed by hydrocyclones. The main effects of the presence of slimes on the flotation are related to the increase on reagents consumption, the froth stability, and decrease on the selectivity. The lower floatability of coarse quartz particles (+74 µm) combined with the presence of slimes, even in small quantities, drastically affect the flotation response. This paper shows a study of characterization of a typical iron ore slime, aiming to create a better understanding of its role on the concentration by flotation. The main characteristics of typical slimes from the Iron Ore Quadrangle in Brazil are the presence of almost 70% of hematite, 25% of quartz, and 5% of kaolinite, as the main silicates gangue minerals. Furthermore, the particle size distribution revealed that 80% of the hematite and the kaolinite are below 20 µm. The affinity between the ultrafine kaolinite of the slimes with the corn starch is harmful to the reverse flotation of quartz, as the starch has an important depressing action over the hematite. The presence of 20% of hematite −20 µm decreased the recovery to the froth of quartz + 74 µm from 97% to 62%, where the slimes coating seems to be the main responsible.

scholarly journals Novel Selective Depressant of Titanaugite and Implication for Ilmenite Flotation

Minerals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 703 ◽  
Author(s):  
Liu ◽  
Wang ◽  
Xiao ◽  
Wang ◽  
Deng ◽  
...  
Keyword(s):  
Sodium Silicate ◽  
Iron Ore ◽  
Electrokinetic Potential ◽  
Sodium Polystyrene Sulfonate ◽  
Test Results ◽  
Polystyrene Sulfonate ◽  
Ilmenite Concentrate ◽  
Adsorbed Amount ◽  
Mineral Flotation ◽  
Adsorption Quantity

This paper studies the effects of sodium polystyrene sulfonate (PSSNa) used as a depressant upon the separation of ilmenite from titanaugite through flotation when sodium oleate (NaOl) is used as a collector by performing single mineral flotation experiments. The depression mechanism of PSSNa on titanaugite flotation was studied by electrokinetic potential and adsorbed amount measurements together with FTIR and XPS detection. Single mineral flotation experiments show that PSSNa is a selective depressant for the separation of ilmenite and titanaugite via flotation with NaOl as the collector. The results of the adsorbed amount tests show that the biggest distinction is in terms of the amount of NaOl adsorbed on the surfaces of ilmenite and titanaugite; the amount is expanded from 2.28 × 10−7 to 9.34 × 10−7 mol/m2 when the dosage of PSSNa is 1 mg/L, as compared with no PSSNa, suggesting that PSSNa is a selective depressant when separating ilmenite and titanaugite through flotation. FTIR testing shows that chemisorption has occurred between the –SO3− groups of the molecular PSSNa and titanaugite surfaces. The results of further XPS testing reveal that PSSNa chemically interacts with Ca/Mg/Al/Fe on the titanaugite surface. The test results of FTIR in combination with XPS confirm that PSSNa stops NaOl from interacting with Mg, Fe, Al, and Ca on the titanaugite surface, and this outcome is the main reason for the widening of the adsorption quantity gap of NaOl on titanaugite and ilmenite surfaces, and titanaugite flotation is suppressed. The results of the comparison flotation testing on actual Panzhihua titanic iron ore (TiO2 grade: 15.63%) with titanaugite as the main gangue show that a better effect is obtained by replacing sodium silicate (SS) with PSSNa, and the recovery of TiO2 using PSSNa is higher than that when using sodium silicate. In a closed circuit flotation test, ilmenite concentrate is obtained with a TiO2 grade of 45.97% and a recovery of 76.32% by using PSSNa as a titanaugite depressant.

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