A normal-temperature short-process collecting agent for hematite reverse flotation comprises, by mass, 0-60% of sodium lignin sulfonate, 35%-90% of acid oil and 5%-20% of polyoxyethylene-polyoxypropylene block polyether. The structural formula of the polyoxyethylene-polyoxypropylene block polyether is shown in the specification, wherein …

The invention relates to a hematite dephosphorizing agent, a medicine is an aqueous solution of Thiobacillus ferooxidans and sodium aliphatate, wherein the weight ratio of the sodium aliphatate and Thiobacillus ferooxidans is 19:1, the concentration of each solute is 0.1mol/L, a preparation method comprises the following step: preparing a sodium …

The invention relates to a hematite reverse flotation inhibitor and a preparation and use method of the hematite reverse flotation inhibitor. The hematite reverse flotation inhibitor is prepared by waste residues generated in the beer brewing process, potassium permanganate, sodium hydroxide and water, and according to the weight ratio of all the …

The invention relates to a preparation method of a floatation depressing agent, in particular to a preparation method of a micro-fine particle hematite reverse flotation depressing agent. The micro-fine particle hematite reverse flotation depressing agent is prepared from cornstarch, ammonium ceric nitrate, acrylamide, sodium bisulfite, …

Present investigation includes the magnetizing roasting of low-grade iron ore fines followed by grinding and beneficiation using magnetic separation. The hematite iron ore used in the investigation contains 53.17% T Fe, 10.7% SiO2, and 4.5% Al2O3. Powdered bituminous coal of 210 μm size with an ash content of 12.5% and fixed carbon …

Medium-grained hematite refers to the ore with a particle size of 0.3-2mm embedded in the ore, and it is also a relatively easy-to-select hematite ore. The main …

Hematite ore's magnetic characteristics were significantly impacted by magnetizing roasting. By selectively magnetizing roasting, hematite is transformed into magnetite. With an Fe grade of 65.25% at a recovery value of 72.5% in the concentrate, magnetic separation produced the greatest result for Fe.

Up to now, various methods have been reported in the literatures on the preparation of hematite nanoparticles, such as the hydrolysis method [10,11], the hydrothermal treatment [12][13][14], the ...

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 the flotation machine, and then stir and aerate to produce a large number of dispersed ...

The results of flotation tests suggest that SPS exhibited much better collecting performance than SO under low temperature. The flotation mechanism of the two collecting agents were further ...

Flotation is one of the most common methods used to recover iron ore, which includes reverse flotation of gangue with cationic collector [6][7][8] and direct flotation of iron ore with anionic ...

Porous ceramics were prepared with spodumene flotation talings (SFT), kaolin and low-melting point glass (LPG) powder, whose pores were formed by the chemical reaction of hydrogen peroxide (H2O2).

Mineral reverse flotation using biopolymers may become a potential alternative to conventional synthetic flotation agents thanks to their abundance, biodegradability, and sustainability. Over the past few years, many interesting studies on the application of biopolymers as depressants in flotation process have been conducted …

The results show that solid naphthalene (Nap) is easy to crystallize at low temperature and adhere to the surface of the flotation concentrate, resulting in a decrease of filtration velocity ...

Commonly, magnetization roasting technology is applied to iron ores with weak magnetic properties (hematite, limonite, etc.), and these weak magnetic iron ores …

Now we know that hematite is a canted antiferromagnet7 with a spontaneous magnetization that is much lower than that of the more … See more

The number of hydroxyethyl groups can be increased under low-temperature conditions. It is shown that phosphenox is a good collector for fluorite, …

Considering the better collectability of amide-amine for quartz flotation and lower adsorption affinity for hematite surface than etheramine, the amide-amine is a …

The number of hydroxyethyl groups can be increased under low-temperature conditions. It is shown that phosphenox is a good collector for fluorite, while the mineral cannot be floated by oxyphos (Fig. 3) . The difference in flotation activity of phosphenox and oxyphos may be due to the difference in surface activity and solubility.

The invention discloses a phosphorus ore flotation collecting agent, particularly relates to a low-temperature phosphorus ore flotation collecting agent and a preparation method thereof, and belongs to the technical field of flotation collecting agents. According to the low-temperature phosphorus ore flotation collecting agent, octadecenoic acid …

The purities of hematite, quartz, and magnetite were 97.3%, 99.4%, and 93.8%, respectively. Elemental compositions of minerals are shown in Table 1.Total iron and ferrous iron contents were determined with the standard titrimetric method using potassium dichromate as titrant after reduction of the iron (III) by tin (II) chloride and/or …

Thus, several investigations have been conducted to explore a green approach for upgrading low-grade hematite ores by considering eco-friendly biodegradable depressants 1,[9][10][11][12][13][14 ...

This investigation involves the effects of non-ionic surfactant materials on the industrial sodium oleate, sodium naphthenate and their mixtures at different temperatures by the surface tension methods. The effects on the critical micelle concentration (CMC) of sodium oleate were assessed by the Toween 80(T-80) presence, polyethylene glycol, polyether …

In this context, a low-grade hematite ore with 56.5% Fe has been subjected to heat treatment followed by grinding and wet high intensity magnetic sepn. (WHIMS). …

All the flotation tests including single mineral and artificially mixed mineral were conducted by XFGII laboratory flotation machine within the 40 mL flotation cell. Prepare the pulp slurry with 5.0 g mineral sample in 30 mL distilled water, then mix the slurry under 1260 rpm for 2 min, after that, add the pH regulator and adjust the slurry pH ...

The invention discloses a preparation method of a low temperature resisting fluorite flotation collector. The method comprises the step of ensuring that acid oil produced in oleic acid and refined vegetable oil serves as a basic raw material, under the reaction condition of the temperature of 20-40 DEG C, and adding sulfuric acid which accounts …

There was an instance where the maximum hematite flotation using 2.5 × 10 −5 molar sodium oleate occurred at pH 4, but under a 45 min conditioning time (Laskowski and Nyamekye, 1994). Previous work by the author also recorded a hematite flotation maximum at pH 5 for an oleate addition of 2 × 10 −5 molar (Quast, 2012b). This …

Reverse cationic flotation is currently the main processing technique for upgrading fine hematite from silicates. Flotation is known as an efficient method of …

Flotation recovery of hematite at pH 4 remained high under equilibrium oleate concentrations above the critical hemi-micelle concentration of oleate. Oleate …

The invention discloses an efficient collecting agent for hematite reverse flotation and application of the efficient collecting agent to improve mineral separation efficiency and lower cost. The collecting agent comprises polyglycerol (4-hydrixy-3 methoxy-phenyl)-phenyl ether-sodium, unsaturated fatty acid and multi-(4-cyclopentyl) carboxylic acid in …