Reverse flotation to remove hematite from quartz sand ore

The use of mechanical laboratory flotation cell has a batch of studies using local quartz sand ore anti-flotation of hematite. The desulfurization efficiency of hematite by reverse flotation has been studied by factors such as various operating parameters, such as the type and concentration of the collector, the type of acid, the pH, the adjustment time, the concentration of the sand, the particle size and the temperature. The results show that it is possible to separate hematite from quartz sand by reverse flotation, and good selectivity can be obtained. The results show that the separation of hematite from silica sand is possible, and good selectivity can be obtained. . Experimental data shows that increasing the temperature in the presence of hydrochloric acid can remove a large amount of hematite ore from the quartz sand. And there is an optimum concentration of collector (Aero 800-series) to remove the maximum from hematite. A first-order kinetic grade was obtained to separate hematite from quartz sand ore.

I. INTRODUCTION Industrial minerals such as quartz sand, porcelain clay and feldspar are often associated with iron oxides and weaken the transmission in the fiber, which can affect the transparency of your glasses, discolor ceramics and lower the melting point of refractories. Iron content can be reduced to a level using physical or physicochemical, chemical methods, the most appropriate severe damage method, based on the mineral form and the distribution of iron concentrate in the ore. Batch flotation is an effective separation method commonly used to separate hematite from quartz sand ore. Batch batch flotation machines have been widely used to investigate the impact of various operating parameters on flotation performance. Most of the flotation studies so far, especially regarding reagent selection, have been implemented so intensively. This is mainly because batch flotation experiments are a way to evaluate mineral flotation responses in a variety of operating conditions in a fast and inexpensive manner. In addition, evaluating the effects of changing flotation variables is easy to implement for batch data fitting dynamics ratio equations. The design and operating angles are important for this flotation dynamics model, providing the basis for simulating industrial flotation loops and obtaining different rate equations. However, which function differs in the work is more suitable for representing actual data, especially for a wide range of flotation conditions. Many parameters are used to model and simulate the flotation loop for batch flotation testing. The aim of the study was to explore the use of a batch of small sand experiments in a hematite process in the reverse flotation separation of silica and a laboratory mechanical flotation device for research and development commonly used in industry. Kowli-Kosh Silica (located in Fars Province, southwestern Iran) was selected as a feasibility study for possible use in the glass industry. The effects of different operating parameters, such as the type and concentration of the collector, the type of acid, the pH, the adjustment time, the concentration of the sand, the particle size and the temperature, were studied as the efficiency of the reverse flotation separation. Data analysis will be used to determine the change in the efficiency of hematite reverse flotation separation for different experimental parameters and can be used to determine the kinetics of the separation.

Second, a large amount of experimental quartz sand (silica sand) was taken from the Kowli-Kosh quartz sand mine and then reduced in hematite by a reverse flotation process. The composition of the original sample was 97.38% SiO2 and 0.213% Fe2O3, as well as trace amounts of Al2O3, CaO, MgO, Na2O, K2O, TiO2. Figure 1 is a block diagram of the removal of hematite from a quartz sand mine. The sample is first finely pulverized and cleaned using a milling machine, and then the particle size is graded and used in the flotation cell. As shown in Figure 1, four different particle sizes were separated from 150 to 840 um and were selected for reverse flotation experiments. The schematics and diagrams of this Denver flotation cell used in this study are shown in Figures 2(a) and (b), respectively, in each test, a given number of a certain range of particle size distributions of quartz sand and The amount of tap water required is mixed in the flotation cell and given the number of revolutions of the agitation. Set the pH and add the required amount of collector to facilitate the separation. The foaming agent (65) was added while the system was allowed to mix and mix for 6 min as the conditioning time (optimal pulping time was 5-6 min) after which air entered the bubble through the rotor at the bottom of the tank. The air flow is regulated by a needle valve that is used to control the speed of the suspended agitator of the particle system. The flotation will last for 8 minutes, during which time the foam is manually removed from the level of the flotation cell. Make up the water added to the tank to compensate for the system's displacement and maintain the solids ratio. The purified quartz sand is collected at the bottom of the tank and analyzed for hematite content by washing, drying, weighing and atomic absorption spectrometry (A-10, Varian Australia Block diagram for hematite removal proccss) A suitable ore hematite collector that does not interfere with the hydrophobicity of the quartz particles. In the current work, a mixture ratio of AERO-801 and AERO-825 is 1:1 found at pH=2.5 Appropriate conditions for flotation of hematite gangue. The performance of enhanced flotation in front should have proper particle size and proper bubble distribution, which will bring hematite particles to the interface at the upper part of the tank. The frother-65 was used to promote separation. Experimental data showed that the optimum concentration of this foaming agent was 15 ppm.

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