Dolomite Flotation Concentrate

A Selective Flotation of Fluorite From Dolomite Using

The results of flotation tests with single minerals stated that the flotation of dolomite was vastly inhibited, while the fluorite was hardly affected when CS was added in flotation using sodium ...

Evaluation of Dolomite Separation Techniques

Partial precipitation of the fatty acid dolomite collector by water hardness ions was suspected to contribute to the failure of this process to effectively float dolomite. Flotation reagent cost for the IMCF process ranged from $2.48 -$2.68 per ton of concentrate for the successful tests performed compared to $2.69-$2.86 per ton of concentrate ...

Study on the Effect of Liberation Properties of Phosphate

Froth flotation is presently the most effective method for separating dolomite from phosphate ore. 2,3 Before flotation, phosphate ore is crushed and ground to achieve complete liberation of minerals, which plays a critical role in flotation. 4,5 To address the issue in separating dolomite from fluorapatite at Zhijin, systematic process ...

Effect of depressants on flotation separation of magnesite …

The flotation separation of magnesite from calcium-containing minerals has always been a difficult subject in minerals processing. This work studied the inhibition effects of carboxymethyl cellulose (CMC), sodium lignosulphonate, polyaspartic acid (PASP) and sodium silicate on flotation behaviors of magnesite, dolomite and calcite, providing guidance for the …

Effect of ultrasonic treatment on the surface roughness and

As shown in Fig. 9 (b), the flotation recovery rates of magnesite and dolomite in the concentrate improve after ultrasonic treatment, indicating that ultrasonic treatment promotes the flotation of magnesite and dolomite in mixed-ore flotation experiments. Notably, ultrasonic treatment has a more notable effect on improving the flotation ...

Synergistic Effect of Sodium Dodecyl Benzene Sulfonate on Flotation …

The concentrate grade of dolomite is 4.72% and the flotation recovery is 32.08%. The flotation results of artificially mixed minerals indicate that, as a synergist, SDBS can improve the selective collection performance of NaOL and help to realize the flotation separation of magnesite and dolomite.

Activation of Dolomite Flotation by Ferrous Hydroxide and …

The major problem with Carlin-type gold deposit flotation is that the high dolomite content in the concentrate decreases the quality of gold. Further, the activation mechanisms involved in dolomite flotation are still not fully understood. Herein, the correlation of Fe 2+ conversion with xanthate adsorption and dolomite flotation was investigated to reveal the effect of dolomite …

Selective flotation separation of apatite from dolomite …

The micro-flotation results indicate that dolomite can be selectively depressed, with its flotation recovery reduced to approximately 10 % by adding KGM at pH=9.0. In experiments involving artificially blended mineral flotation, the P 2 O 5 grade and recovery of the phosphorus concentrate were 36.8 % and 81.6 %, respectively.

Activation of Dolomite Flotation by Ferrous Hydroxide and …

The major problem with Carlin-type gold deposit flotation is that the high dolomite content in the concentrate decreases the quality of gold. Further, the activation mechanisms involved in dolomite flotation are still not fully understood. Herein, the correlation of Fe2+ conversion with xanthate adsorption and dolomite flotation was investigated to reveal the …

The utilization of tamarind seed gum as a novel dolomite …

New depressant TSG was used to separate apatite from dolomite. • A concentrate with P 2 O 5 recovery of 78.76% and P 2 O 5 grade of 35.86% was ... Therefore, TSG selectively restrained the flotation of dolomite, achieving the separation. Furthermore, the XPS results uncovered that the Ca and Mg of dolomite were the main active sites that ...

The removal of dolomite from collophane using reverse flotation …

SDS effectively removed dolomite from the gravity concentrate when no other reagents were present. Flotation test results showed that, compared to the conventional gravity-flotation process, the ...

The flotation separation of apatite from dolomite using a …

Micro-flotation results indicated that the addition of P (AA-AMPS) could achieve the efficient separation of apatite from dolomite at pH 8.5 by selectively depressing the dolomite flotation, in ...

Mechanism of separating pyrite and dolomite by flotation

The separation of magnesite from dolomite was studied by flotation tests, X-ray photoelectron spectroscopy (XPS), and zeta potential measurements in the presence of calcium ion (Ca²⁺) dissolved ...

Activation of Dolomite Flotation by Ferrous Hydroxide …

Activation of Dolomite Flotation by Ferrous Hydroxide and Carbonate Haiping Zhao, Xiaopeng Niu, Bingxu Dong, Xianbing Jia and Renman Ruan Special Issue ... The major problem with Carlin-type gold deposit flotation is that the high dolomite content in the concentrate decreases the quality of gold. Further, the activation mechanisms involved in

Development of Reagent Schemes for Reducing MgO …

Successful methods include adding a dolomite depressant in the rougher flotation, dolomite flotation on the cleaner concentrate with grinding, and scrubbing the cleaner concentrate in quartz sand. These techniques could reduce MgO content in the final concentrate by 20-40%.

Differential adsorption of hydrolytic polymaleic anhydride as …

Overall, dolomite was selectively depressed by SA during the flotation of sphalerite, and the content of magnesium in the zinc concentrate decreased significantly from 3.65% to 2.37%.

A Review of Flotation Separation of Mg Carbonates (Dolomite …

The dolomite content in the concentrate is about 20%, where 80% of dolomite was removed and importantly 98% of the quartz was removed, with only 0.3% of the quartz in the final concentrate.

Article Flotation Separation of Dolomite from …

find effective ways for recovering apatite from dolomite [10]. Flotation is a separation and concentrate method that uses the physicochemical fea‐ tures of minerals to separate valuable …

Minerals | Free Full-Text | Flotation Behavior and Interface

The results above show that a good flotation separation effect of apatite dolomite can be achieved with sulfuric acid or phosphoric acid as the depressant (the concentrate P 2 O 5 grade > 30%), but the problem is that the recovery is relatively low.

Selective adsorption of a new depressant Na2ATP on dolomite

In this paper, Na 2 ATP was first applied as a depressant in the flotation separation of magnesite and dolomite with sodium oleate. The significant influence of Na 2 ATP on the flotation behavior of magnesite and dolomite was investigated via flotation tests. The selective adsorption behavior of Na 2 ATP on different mineral surfaces was studied through adsorption …

Minerals | Free Full-Text | Flotation Separation of …

The flotation results demonstrate that SDBS collector exhibited a stronger harvesting effect on fluorapatite as opposed to dolomite, an effective separation of dolomite from fluorapatite could be achieved under low …

Improving flotation separation of apatite from dolomite …

Flotation is a separation and concentrate method that uses the physicochemical features of minerals to separate valuable minerals from gangue minerals [11][12][13], is regarded as the most ...

Study on regulators of purifying magnesite ore by cationic …

Flotation test of a single mineral under an ether amine system. Under the ether amine system, the flotation behaviour of magnesite, dolomite, and quartz single minerals was studied.

Flotation Behaviors of Magnesite and Dolomite Using a …

As shown in Fig. 4, compared with the single collector of NaOL, the flotation recovery of magnesite with the mixed collector NaOL-DP improves 10–40% at the specified pH range, except for the condition of pH 11 declining 5%.The maximum recovery of 85% for magnesite was obtained at pH 10, and the selectivity index of two minerals was 3.78. The …

Role of tannin pretreatment in flotation separation of

Microflotation experiments confirmed that the tannin pretreatment method selectively and largely reduces the flotation recovery rate of dolomite without affecting the flotation recovery rate of magnesite. Moreover, the contact angles of the tannin-pretreated magnesite and dolomite increased and decreased, respectively, in the presence of NaOl.

Enhancing selective calcite and dolomite flotation in the …

The recovered magnesite concentrate comprised 70.1% magnesite and 21.7% dolomite, with a dolomite and calcite recovery of almost 68% in the recovered froth. It should …

Effect and mechanism of dolomite with different size …

The effect of dolomite with different particle size fractions on hematite flotation was studied using sodium oleate as collector at pH of about 9. The effect mechanism of dolomite on hematite flotation was investigated by means of solution chemistry, ultraviolet spectrophotometry (UV), inductively coupled plasma atomic emission spectrometry (ICP-AES) …

Selective adsorption of a high-performance depressant onto dolomite …

Overall, dolomite was selectively depressed by SA during the flotation of sphalerite, and the content of magnesium in the zinc concentrate decreased significantly from 3.65% to 2.37%.

Separating dolomite from phosphate rock by reactive flotation …

Efforts to concentrate high-dolomite Flor ida phosphate ores by flotation, using conventional fatty-acid/fuel-oil flotation [Liewellyn, 1982], showed that sodium silicate

(PDF) A Review of Flotation Separation of Mg Carbonates (Dolomite …

Flotation Separation of Dolomite from Magnesite Surface characterizations of dolomite and magnesite indicate that their separation from each other is quite complicated; however, separation can be achieved using flotation at optimum conditions aided by using modifiers along with collectors. pH and mineral dissolution are cardinal for their ...