oolitic hematite flotation

Improved Flotation of Oolitic Hematite Ore Based on a

Oolitic hematite is one of the most refractory iron ores with complicate mineral compositions and abundant reserves in China The hematite and limonite in the ore integrate closely with fine particles of collophanite, quartz, chamosite, calcite and chalcedony to form concentric ring structure, making the separation of the minerals extremely difficult Since the tiny hematite crystal can not be liberated during the grinding of the oreOolitic hematite and limonite in the ore integrate closely with fine particles of collophanite, quartz, chamosite, calcite and chalcedony to form concentric ring structure, making the separation of the minerals extremely difficult The results indicated that the flotation separation efficiency with most cationic collectors such as dodecylamine, ether amine, GE601 or GE609 was not satisfactory However, a novel cationicImproved Flotation of Oolitic Hematite Ore Based on aDownload Citation | Improved flotation of oolitic hematite ore based on a novel cationic collector | Oolitic hematite is one of the most refractory iron ores with complicate mineral compositionsImproved flotation of oolitic hematite ore based on a

Oolitic Hematite Separating Process Xinhai

09122015· Oolitic hematite separating the processing of reverse flotation This method is direct flotation of fine grinding oolitic hematite, direct flotation for dephosphorization and desilication Adopting this way is difficult to improve the grade of concentrate and get satisfactory indicatorOolitic hematite has thin mosaic granularity hematite and it is mutual packages with siderite, chamosite and phosphoruscontaining mineral which makes oolitic hematiteIn order to better exploit and utilize the oolitic hematite ore resource in Zhangjiakou region, staged grindingseparation 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 flotationTest Research on HIMSReverse Flotation of Ooliticthe reduction roasting−reverse flotation process was more effective in the beneficiation of oolitic hematite ore than the reverse flotation, and the concentrate with a total iron grade of 6014% and a phosphorus content of 022% was obtained The mineral phase transformation of oolitic hematite treated by coalbased reduction roasting wasMechanism of phosphorus removal in beneficiation of high

CNA Method for separating oolitic hematite

The invention discloses a method for separating oolitic hematite, and the process of the method comprises discarding tailings of ores by intense magnetic separation through stage grinding and stage separation, and dephosphorizing and increasing iron to the intense magnetic concentrated by reverse flotation The intense magnetic separation is functioned of concentrating iron minerals andIt is difficult to obtain high iron grade concentrates with low phosphorus content using conventional magnetic separation or froth flotation methods following fine grinding of oolitic hematiteDevelopment of Technologies for High Phosphorus01082017· The Ningxiang type oolitic hematite, which is widely distributed in Hubei, Hunan, Sichuan, Guizhou and other regions, is one of the largest reserves of sedimentary iron ore in China The iron ore reserves of 372 billion tons, account for approximately 735% ofDephosphorization of high phosphorus oolitic hematite by

A review on the characterisation and processing of oolitic

01092018· The oolitic goethite transformed to hematite at moderate temperatures, then the hematite reacted with carbon monoxide (from the added coal) to form magnetite or ɣhematite The optimum temperature for the conversion of goethite to magnetite was 600 °C Increasing the temperature to 800 °C resulted in the formation of nonmagnetic wustite (FeO) Increasing the roasting temperature up toDownload Citation | Improved flotation of oolitic hematite ore based on a novel cationic collector | Oolitic hematite is one of the most refractory iron ores with complicate mineral compositionsImproved flotation of oolitic hematite ore based on aThe invention discloses a method for separating oolitic hematite, and the process of the method comprises discarding tailings of ores by intense magnetic separation through stage grinding and stage separation, and dephosphorizing and increasing iron to the intense magnetic concentrated by reverse flotation The intense magnetic separation is functioned of concentrating iron minerals andCNA Method for separating oolitic hematite

Selective Flocculation of Fine Grain Oolitic Hematite

The fine oolitic hematite ore (<20µm) is easily covered by the ore slime, therefore, it is processed very difficultly with traditional crafts, for example, gravity treatment, magnetic separation, and flotation The tiny iron ore is unable to recycle effectively, bring about a large of useful minerals running off It is indicated that the selective flocculation is effective separation craft inThe invention relates to a combined collecting agent and a method for reverse flotation phosphorous reduction of high phosphorus oolitic hematite The combined collecting agent is a complex anionic collecting agent, namely a combination of MG and MY in a ratio of 2:1, wherein the effect of the synergistic action of the MG and the MY is obviously better than that of the single use of the MG andCNA Combined collecting agent for reverse27052021· Hematite flotation separation The flotation separation method is mainly used to separate the finegrained and particulate hematite If it is difficult to recover fine ore particles smaller than 10μm by other methods, the flotation separation method can be adopted At present, froth flotation is commonly used Its principle is to grind the hematite ore into a slurry by adding water to theHow to Process Hematite: Beneficiation Methods and

IRON ORE MINERAL PROCESSING METHOD – NanJing Sinonine

08032018· The sedimentary phosphorus bearing oolitic hematite ore and phosphorus are colloid phosphate state Although it can be separated from iron by flotation, it is often difficult to integrate phosphate concentrate, and the recovery rate of iron is reduced The high phosphorus pig iron can be smelted and the steel slag phosphate fertilizer can be recovered after the large granularity of theThe efficient development and utilization of highphosphorus oolitic hematite is of great strategic significance for the sustainable supply of ironore resources in China In this paper, the mechanism of hightemperature pretreatment for enhancing the effect of iron enrichment and dephosphorization in the magnetization roasting–leaching process was studied by Xray diffraction (XRDStrengthening iron enrichment and dephosphorizationNingxiang oolitic hematite is a unique type of sedimentary iron ore The proven reserves of this type of iron ore is 372 billion tons accounting for ~11% of the iron ore resources in China The iron content of this type of iron ore is ~20–45%, the quartz content is ~15–35%, and the phosphorus content is ~04–11% or higher Phosphorus is a pernicious element for steel which major comeMicrowave Carbothermic Reduction of Oolitic Hematite

oolitic beneficiation

The oolitic hematite with a lower iron content and a higher phosphorus content will be a potential source of raw iron ore for the Chinese iron and steel industry The magnetization reducing roasted and magnetic separation is a practical beneficiation process The results show that the iron content in the concentrate can be increased to 5763% from 4595%, the iron recovery up to 7312%, when AOolitic hematite occurs at Red Mountain near Birmingham, Alabama, along with oolitic limestone They are usually formed in warm, supersaturated, shallow, highly agitated marine water intertidal environments, though some are formed in inland lakes The mechanism of formation starts with a small fragment of sediment acting as a 'seed', eg, a piece of a shell Strong intertidal currents washOolite WikipediaThe invention discloses a method for separating oolitic hematite, and the process of the method comprises discarding tailings of ores by intense magnetic separation through stage grinding and stage separation, and dephosphorizing and increasing iron to the intense magnetic concentrated by reverse flotation The intense magnetic separation is functioned of concentrating iron minerals andCNA Method for separating oolitic hematite

Development of Technologies for High Phosphorus

It is difficult to obtain high iron grade concentrates with low phosphorus content using conventional magnetic separation or froth flotation methods following fine grinding of oolitic hematite01082017· Recently, several phosphorus removal processes for high phosphorus oolitic hematite have been investigated, including physical separation (Wu et al, 2011), flotation (Yan et al, 2011), alkali leaching or acid leaching (Jin et al, 2006, Xia et al, 2011), bioleaching (Delvasto et al, 2008, Wang et al, 2010), and the pretreatment with hot metal (Wu et al, 2011) etc Among these processesDephosphorization of high phosphorus oolitic hematite19042016· Hematite Flotation Circuit Each flotation circuit consists of a four cell open flow roughing section followed by a two cell scavenger The scavenger concentrate is returned by gravity to the third rougher cell and the rougher concentrate from the first rougher cell is sufficiently high grade ( + 58% Fe) to combine with the cleaner concentrate which flows by gravity to the recleaners AllHematite Processing by Flotation 911 Metallurgist

Recycling iron from oolitic hematite via microwave

01042021· Oolitic hematite is an iron ore resource with complex refractory characteristics, abundant reserves, and significant recycling value In this study, a clean and innovative microwave fluidization roasting method was developed Iron concentrate with an iron grade of 5872% and iron recovery of 8932% was obtained via microwave pretreatment at 1050 °C for 2 min, followed by magnetizationThe ore dressing process of oolitic high phosphorus hematite includes the following steps: roasting crushed oolitic high phosphorus hematite in 8099 wt% with coal powder as reductant in 120 wt% inside a shaft furnace or rotary kiln at 7001050 degc for 0525 hr and sealed cooling to room temperature; crushing the roasted hematite, grinding and weak magnetic separation; regulating pHCNA Ore dressing process of oolitic highThe invention provides an oolitic hematite dressing method; slime dispersing agent and mineral grains are mixed fully and uniformly during an ore grinding process by adding the slime dispersing agent in the ore grinding step, so that the effect of suppressing granular poly groups is quickly displayed in a size mixing process, the dispersion capability of the slime dispersing agent in a unitCNB Oolitic hematite dressing method

Effects of sodium salts on reduction roasting and Fe–P

14112013· Oolitic hematite ores are mainly distributed in USA, France, Germany, Russia and China Dephosphorization of iron ores by gravity separation (eg hydrocyclone, shaking table), magnetic separation and froth flotation were reported (Dukino and England, 1997, Jiang et al, 2010b, Siirak and Hancock, 1988) For example, an iron concentrate with 6118% Fe grade was obtained by magneticThe oolitic hematite with a lower iron content and a higher phosphorus content will be a potential source of raw iron ore for the Chinese iron and steel industry The magnetization reducing roasted and magnetic separation is a practical beneficiation process The results show that the iron content in the concentrate can be increased to 5763% from 4595%, the iron recovery up to 7312%, when Aoolitic beneficiationOolitic hematite occurs at Red Mountain near Birmingham, Alabama, along with oolitic limestone They are usually formed in warm, supersaturated, shallow, highly agitated marine water intertidal environments, though some are formed in inland lakes The mechanism of formation starts with a small fragment of sediment acting as a 'seed', eg, a piece of a shell Strong intertidal currents washOolite Wikipedia