gypsum were investigated to determine conditions for selective flotation. Test Results with Pure Minerals: The micro-flotation of celestite and gypsum was investigated as a function of pH.

From the experiments in which the various surface active agents was tested as the collector, it was indicated that oleic acid was the best collector for the crystal gypsum and “Auxide”(alkyl pyridinium salts) for the gypsum in the scale. The simple flotation tests with an apparatus described by Knoll Leaf were carried out for the two cases; the one is the mixture of NaCl and CaSO 4 2H 2 O (both commercial

Hallimond tube tests conducted with oleate as a collector suggested that gypsum floated best around pH 6, yet celestite floated best around pH 8.5. On the other hand, in the

2013-7-18  Hallimond tube tests conducted with oleate as a collector suggested that gypsum floated best around pH 6, yet celestite floated best around pH 8.5. On the other hand, in the case of sulphonate, there was not a distinct pH value where gypsum and celestite were best floated.

The purpose of fhe present papaer is to examine fundamentally the separation and recovery of gyp sum by means of the flotation process from the so-called“Scale”obtained in the salt-making ...

Especially, from the views of separation and recovery of gypsum, the following treatment would be recommended which the concentrates risen by flotation were well washed by water, because of the greater solubility of such coexisting salts as NaCl, MgSO

2019-5-15  The impact of calcium and gypsum on separation of scheelite from fluorite using sodium silicate as depressant was investigated by micro-flotation tests, X-ray photoelectron spectroscopy (XPS), zeta potential measurements and solution chemical analysis.

It will be evident from the foregoing test results illustrated graphically in the FIGURE that, for a gypsum content of at least 0.5 percent in the first stage concentrate, the optimum sulphate addition would be from about 3 to about 6 g/l, preferably about 4 g/l, for Na 2 SO 4 and would be about 2 to about 6 g/l, preferably about 3 g/l, for (NH ...

2017-2-26  Flotation has been successfully used in Canada for removal of impurities from sodium chloride. In this particular case anhydrite and gypsum are recovered in a flotation concentrate which is dis-carded to waste, while the tailing is a high-grade salt

The study was carried out to examine the most suitable conditions for separation and recovery fo gypsum by means of the flotation process from gypsum scale discharged from the vacuum evaporator in ...

2013-7-18  Flotation behaviour of pure minerals, celestite and gypsum was investigated using oleate and sulphonate as collectors in a Hallimond tube. The zeta potential values of both minerals were measured with respect to pH in an attempt to explain the flotation mechanism of the collectors.

2011-8-10  Flotation test conducted with -10 mesh sample ground to 100 mesh using amines to float the deslimed silicates and leaving gypsum in the tailing produced a gypsum concentrate analysing 44.57% SO3 with 85.6% SO3 distribution in it. Sample No. 5 A low grade amorphous gypsum was received for beneficiation studies. It composed of fines of which

Especially, from the views of separation and recovery of gypsum, the following treatment would be recommended which the concentrates risen by flotation were well washed by water, because of the greater solubility of such coexisting salts as NaCl, MgSO 4, MgCl 2 and so on than that of gypsum

Precipitation test results showed that silicate removal reached 90% at an initial silicon concentration of 2650 mg/L when the dose of FGD gypsum exceeded 20 g/L. Equilibrium speciation analysis ...

2014-9-19  The actual ore flotation test flowsheet consisting of one roughing, one cleaning and one scavenging resulted in a purified phosphogypsum with gypsum grade of 97.12% at recovery of 93.50% and the SiO 2 content therein of only 1.63%.

It will be evident from the foregoing test results illustrated graphically in the FIGURE that, for a gypsum content of at least 0.5 percent in the first stage concentrate, the optimum sulphate addition would be from about 3 to about 6 g/l, preferably about 4 g/l, for Na 2 SO 4 and would be about 2 to about 6 g/l, preferably about 3 g/l, for (NH ...

2020-1-8  The flotation tests were performed in a conventional Denver D-12 sub-aeration flotation machine with 1.0 liter capacity cell. The floated fraction was collected until the froth was barren. ... gypsum (2.43 % SO 3) in addition to apatite. This might explain the presence of higher acid insoluble (19.1 % A.I) than the silica content (11.81 % SiO

Fig. 8 - Flotation of calcite, francolite, gypsum and fluorite at pH 8 with AERO 6493 (20 mg/L) and 5.10 -5 M of PX4826, TX-15 and PX4852. The adjunction of 5.10 - 5 M or 10 mg/L of PX4826 ...

2017-2-26  The Froth Flotation Machine and its operating principles are universally used for all types of flotation problems.This machine finds a wide acceptance due to its flexibility in construction, which allows the machine to be adjusted to handle pulps with

2011-8-10  Flotation test conducted with -10 mesh sample ground to 100 mesh using amines to float the deslimed silicates and leaving gypsum in the tailing produced a gypsum concentrate analysing 44.57% SO3 with 85.6% SO3 distribution in it. Sample No. 5 A low grade amorphous gypsum was received for beneficiation studies. It composed of fines of which

Especially, from the views of separation and recovery of gypsum, the following treatment would be recommended which the concentrates risen by flotation were well washed by water, because of the greater solubility of such coexisting salts as NaCl, MgSO 4, MgCl 2 and so on than that of gypsum

2020-1-8  The flotation tests were performed in a conventional Denver D-12 sub-aeration flotation machine with 1.0 liter capacity cell. The floated fraction was collected until the froth was barren. ... gypsum (2.43 % SO 3) in addition to apatite. This might explain the presence of higher acid insoluble (19.1 % A.I) than the silica content (11.81 % SiO

It will be evident from the foregoing test results illustrated graphically in the FIGURE that, for a gypsum content of at least 0.5 percent in the first stage concentrate, the optimum sulphate addition would be from about 3 to about 6 g/l, preferably about 4 g/l, for Na 2 SO 4 and would be about 2 to about 6 g/l, preferably about 3 g/l, for (NH ...

To determine what these precipitates were, A side flotation feed and thickener feed #3 samples were filtered then the solids were dried and weighed followed by XRD analysis. Figure 5 shows the XRD (Rigaku, model Dmax 2500) analysis of the precipitates for the flotation feed side A only. The XRD analysis showed that the precipitates were gypsum.

the phosphorus building gypsum.Therefore, we need to pretreat the phosphogypsum before useing.Currently, there are three phosphogypsum pretreatment methods:the washing method, the flotation method and the lime neutralization method.The passage shows a new pretreatment method

2016-6-9  Sink-Float Tests are classed as bulk or selective separations. A bulk test gives two products, first, the lighter minerals with a gravity less than 2.8 to 3.3 and, second, minerals having a gravity heavier than 2.8 to 3.3. The separation depends on the

2013-9-26  doing a flotation test is obligatory for determining the process. since the air injection to slurry is done in a very small area before the separation vessel, the PneUflot process needs less time compared to other flotation technologies. to design the process and assure the operation, we suggest to do test works with PneUflot itself.

2018-1-3  The flotation mechanisms of molybdenite fines by neutral oils were investigated through microflotation test, turbidity measurements, infrared spectroscopy, and interfacial interaction calculations. The results of the flotation test show that at pH 2−11, the floatability of molybdenite fines in the presence of transformer oil is markedly better than that in the presence of kerosene and diesel ...

2004-2-4  by the mineral type [16]. Minerals such as calcite, gypsum, magnesite and limestone can be present in most reservoir rocks and systems, and recent ex-periments [17] have shown their predominating influence on sulfonate depletion in these systems.