US3246748A Flotation concentration of non-metallic

calcite flotation mineral concentrate scheelite Prior art date 1962-12-17 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Lifetime Application number US245207A Inventor Burwell Blair Original Assignee

Effect of calcium concentration on calcite flotation from

One of the alternatives to improve the concentrate quality (sink fraction) could be adding one more flotation stage of the sink fraction; Considering that the collector reacts with the calcium present in the calcite as well as with the free Ca2+ ions, the calcite flotation must be conducted with a higher

Flotation separation of bastnaesite from calcite using

Aug 15, 2020 A novel hydroxamic acid collector, octylmalon dihydroxamic acid (OMHA), was designed by introducing the secondary hydroxamic group into octanohydroxamic acid (OHA) and synthesized. OMHA was originally used as the collector in the flotation separation of bastnaesite from calcite. The flotation results revealed that OMHA exhibited better collecting

Effect of calcium concentration on calcite flotation from

3.1 Effect of Ca 2+ concentration in calcite flotation. Table 1 shows the effect of the Ca 2+ ions concentration on the grade/recovery and P 2 O 5 losses from the float and sink products of the calcite flotation. The concentration of Ca 2+ studied ranged from 6 mg/L to a maximum value of 670 mg/L.

Minerals Free Full-Text Selective Flotation of Calcite

The flotation results are presented in Table 1. It can be seen that, in calcite concentrate, the calcite recovery is up to 85.2% while fluorite has a very low recovery of 11.2%. A tailing with 48.01% of fluorite and 3.78% of calcite was produced and further processed to obtain a high grade fluorite concentrate.

Calcite Processing by Flotation for Beneficiation

The Problem with Calcite Processing & Flotation The availability of high lime rock is often limited and it becomes necessary to use lower grade sources from quarries favorably located to cement plants. Beneficiation of the lime rock in such cases is necessary to remove impurities and to secure the proper ratio of calcite to other constituents for cement specifications. Flotation has been very

Calcite-Apatite Flotation

Calcite flotation The results obtained for the pH dependence of flotation of calcite using 10 -4 kmol/m 3 potassium oleate at two levels of pH. Interestingly, flotation at the minimum is found to increase from about 25% to 85% with increase in KNO3 from 0 to 3 x 10-2 kmo1/m3.

Selective Flotation of Cassiterite from Calcite with

When BHA was used as the collector in the flotation of cassiterite and calcite, calcite recovery plummeted to 26.73% as CMC concentration increased to 4 mg/L, while that of cassiterite declined slowly to 50% . The extensive use of CMC will depress cassiterite to some extent and affect the separation efficiency.

(PDF) Study of celestite flotation efficiency using sodium

The results indicated that at the optimum conditions of flotation, a concentrate of 30% P2O5 with a recovery of a proximately 75% was obtained from a feed of particle size less than 250 microns

Selective flotation of scheelite and calcite

flotation tests to recover scheelite from tailings failed due to the dilution of the concentrate by calcite. Hence to adopt the flotation process successfully, it is necessary to depress the calcite selectively which is not achieved easily(2) due to the presence of small amounts of Ca, Mg and Fe salts and the lean grade of the ores to be treated.

An Alternative Flotation Process for Apatite Concentration

Calcite flotation –Coarse fraction Effectof the collector dosage –Calcite concentrate Mass recovery;P2O5 recovery and P 2O5 grade 27,2 30,6 34,8 25 30 35 40 20,8 0,4 0,7 1,4 4,3 0,4 0,5 0,9 2,6 0 5 10 15 20 200 300 400 500 (%) Coconut soap (g/t) Mass recovery P2O5 Recovery P2O5 (%)

Minerals Free Full-Text Selective Flotation of Calcite

Fluorite is an important strategic mineral. In general, fluorite ores will contain a certain amount of calcite gangue mineral. Thus, they need to be separated from each other. For an economic separation, a reverse flotation process is used to float calcite gangue from fluorite. However, little information on the separation is available. In this study, a novel reagent schedule using citric acid

Flotation collectors optimized performance

halite flotation Calcite Removal of discoloring minerals and/or silicates Barite Reverse flotation where Magnesite impurities are silicates The main objective of iron ore flotation is to upgrade the concentrate by removing silicates and/or phosphorus-containing minerals. The use of silica flotation

Study of reverse flotation of calcite from scheelite in

A new coated-reactive reverse flotation method based on the generation of CO 2 bubbles at a calcite surface in acidic solution was used to separate calcite from scheelite. The dissolution kinetics of coated and uncoated calcite were studied in sulfuric acid. The CO 2 bubbles generated on the uncoated calcite particle surface are enough to float the particle.

Beneficiation of a Low Grade Limestone by Flotation Column

dominating calcite. Reverse flotation was tried using two different commercial amines viz. Chem750F and Flotamine-D. The studies clearly suggest that it is possible to produce a limestone concentrate assying around 96-97% of CaCO3 with less than 1% Si02. 1. Introduction

Process of concentrating calcite PHOSPHATE RECOVERY CORP

No other agent was added to the pulp, the pH value of which in the mixer was 7.8. Subsequent to the conditioning indicated, the pulp was transferred to a subaeration flotation machine, where it was diluted and frothed for one minute, during'which a concentrate of calcite was separated.

Flotation recovery of vanadium from low-grade stone coal

flotation. Calcite was primarily floated to avoid negative effect on the subsequent flotation of vanadium-bearing minerals, and then the tailing from calcite flotation was further subjected to direct flotation. The detailed process flowsheet is given in Fig. 1. Flotation products such as slime, concentrate and tailing were filtered, dried,

(PDF) Ultrafine Falcon Gravity Concentration of Rare Earth

On flotation concentrate materials, it was possible to achieve initial gravity REE recoveries exceeding 90% while rejecting on the order of 25% to 35% of the total calcium from an assortment of

US2959281A Flotation of niobium-bearing minerals

US2959281A US784391A US78439158A US2959281A US 2959281 A US2959281 A US 2959281A US 784391 A US784391 A US 784391A US 78439158 A US78439158 A US 78439158A US 2959281 A US2959281 A US 2959281A Authority US United States Prior art keywords flotation niobium concentrate minerals mica Prior art date 1958-12-31 Legal status (The legal status is an assumption

(PDF) Scheelite flotation: a new scheme using oleoyl

[Show full abstract] calcite with Na2CO3 in scheelite rougher flotation the fluorite flotation can be carried out more easily, and the fluorite concentrate with a grade of CaF2 97.42% and CaCO3 0

FLOTATION SEPARATION OF SCHEELITE FROM FLUORITE

In scheelite flotation, gangue minerals such as Fluorite and Calcite have the same surfaceactive cation (Ca-2+ ) with scheelite minerals and strong binding capacity with the fatty acid collectors. So the flotability of scheelite is a close with that of Fluorite and Calcite and it is difficult to get good scheelite rough concentrate indexes. It is

halite flotation concentrate

Flotation Separating Plant For Price Flotation Machine. 1 froth flotation chemical engineering froth flotation is a highly versatile method for physically separating particles based on potassium chloride sylvite from sodium chloride halite separating coalso for each 10 tons of feed the plant would produce 1 ton of concentrate. more. Get Price

Mountain Pass rare earth mine CONCENTRATION OF MINERALS

The bastnäsite ore was finely ground, and subjected to froth flotation to separate the bulk of the bastnäsite from the accompanying barite, calcite, and dolomite. Marketable products include each of the major intermediates of the ore dressing process: flotation concentrate, acid-washed flotation concentrate, calcined acid-washed bastnäsite

Selective flotation of scheelite and calcite

flotation tests to recover scheelite from tailings failed due to the dilution of the concentrate by calcite. Hence to adopt the flotation process successfully, it is necessary to depress the calcite selectively which is not achieved easily(2) due to the presence of small amounts of Ca, Mg and Fe salts and the lean grade of the ores to be treated.

Flotation collectors optimized performance

halite flotation Calcite Removal of discoloring minerals and/or silicates Barite Reverse flotation where Magnesite impurities are silicates The main objective of iron ore flotation is to upgrade the concentrate by removing silicates and/or phosphorus-containing minerals. The use of silica flotation

Beneficiation of a Low Grade Limestone by Flotation Column

dominating calcite. Reverse flotation was tried using two different commercial amines viz. Chem750F and Flotamine-D. The studies clearly suggest that it is possible to produce a limestone concentrate assying around 96-97% of CaCO3 with less than 1% Si02. 1. Introduction

Value added industrial minerals production from calcite

cite. Therefore, reverse flotation was performed to concentrate the wollastonite. When the wollastonite was depressed, calcite was floated. During the flotation experiments, the pH, type of collector (oleoylsarcosine and oleic acid), amount of collector and solid ratio in pulp parameters were investigated.

Effect of dissolution kinetics on flotation response of

The flotation response of calcites was observed to be higher at pH 10 than at pH 8, although the mineral dissolution presented a greater initial rate at pH 8 when compared with pH 10. This result indicatesa possible influence ofthe carbonate/bicarbonate ions provided by the air on the calcite flotation

Flotation recovery of vanadium from low-grade stone coal

flotation. Calcite was primarily floated to avoid negative effect on the subsequent flotation of vanadium-bearing minerals, and then the tailing from calcite flotation was further subjected to direct flotation. The detailed process flowsheet is given in Fig. 1. Flotation products such as slime, concentrate and tailing were filtered, dried,

Reverse Flotation IntechOpen

Oct 11, 2017 For example, the low ash content of concentrate was obtained around 10.5 pH value due to optimum flotation of calcite and dolomite around this pH . As well as ash and pyrite, some other valuable minerals can also be regained by reverse flotation throughout different pH levels. Ding worked on sub-bituminous coal sample with 48.5% ash content and

Mountain Pass rare earth mine CONCENTRATION OF MINERALS

The bastnäsite ore was finely ground, and subjected to froth flotation to separate the bulk of the bastnäsite from the accompanying barite, calcite, and dolomite. Marketable products include each of the major intermediates of the ore dressing process: flotation concentrate, acid-washed flotation concentrate, calcined acid-washed bastnäsite

A Study on the Froth Flotation Characteristics for

Froth flotation characteristics study was carried out on Yeongwol Sangdong mine Scheelite ore in order to produce WO3 concentrate using oleic acid as collector. In case of using oleic acid, due to the low selectivity of the purpose mineral, the selection of the gangue mineral depressant and pH adjustment are important. As a result, it was confirmed that the optimum pH for providing optimum

halite flotation concentrate

Flotation Separating Plant For Price Flotation Machine. 1 froth flotation chemical engineering froth flotation is a highly versatile method for physically separating particles based on potassium chloride sylvite from sodium chloride halite separating coalso for each 10 tons of feed the plant would produce 1 ton of concentrate. more. Get Price

(PDF) Apatite Flotation from Brazilite–Apatite–Magnetite

The ratio of apatite and carbonates in flotation concentrate corresponded to that in the floatation feed. This allows a conclusion about close flotability of apatite and calcite in the test sample. In flotation of the second sample with Phospholan PE65, adding liquid glass right down to the consumption of 1 kg/t did not lead to the increase of

Flotation Research of a Fluorite Ore Scientific.Net

Separating fluorite from quartz and calcite by forth flotation can be both in weak-acidized (pH 6.0) condition and weak alkali (pH 9.0) condition. The experiment results have shown that ZnSO4 can decrease the depression that water glass works on the fluorite, and acidized water glass has a selective inhibition on the silicate minerals. The close flowsheet protocolled in the experiment can

Flotation separation of scheelite from calcite using

calcite is a difficult issue in flotation, which is the common method to separate them. However, the difficulty of flotation of scheelite from calcite is due to the existence of the same cation in the minerals surface and similar physicochemical characteristics such as solubility, hardness, specific gravity and

Flotation Process Scientific.Net

In contrast, with the use of direct-reverse flotation process and double reverse flotation process, the separation of phosphorus minerals and gangue minerals in the ore can be realized effectively, as the result, the P 2 O 5 grades of phosphorus concentrate are 32.29% and 31.26%, respectively. Considering the above factors, we recommend direct