The parts with required sizes will be conveyed to fixed area for end use while others will be sent back to cone crusher for re-crushing. And then the crushed iron ore will be conveyed to the cone crusher for secondary crushing. After this, the iron ore particles discharged from the cone crusher will be conveyed to the vibrating screen for grading and separating.In the crushing line, our engineer recommended jaw crusher, cone crusher, belt conveyor and vibrating screen for him. Firstly, jaw crusher will coarsely crush the iron ore.
This not only can absorb the noise of ball mill, but also have sound insulation effect. Another change is that make the workers duty room equipped with sound insulation board around the room.Adjust the installation layout, to replace the fence on one side of the ball mill with can acoustic screen of the activity. And protect the maintenance operator.
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In conveyors of this type with elastic conveyor belts, the belt stretches according to the tension applied thereto, the amount of stretch being directly proportional to the input horsepower and the modulus of elasticity of the conveyor belt. Therefore, the speed of the belt entering a drive pulley is greater than the speed of the belt leaving the pulley.
FBCFA is typically collected using electrostatic precipitators (ESP); therefore, Ohenoja et al. , who studied FBCFA from four different power plants, harmful metals are enriched in the finest particles from field 3. Therefore, fractionation is not necessarily a good treatment for fly ash, even though the studied FBCFA’s harmful element concentrations were below the Finnish limit values for forest fertilizers, even in the smallest fraction.The fractionation of fly ash to improve its quality for fertilizing purposes has been studied in a few papers with the target to separate harmful substances from the fly ash [48,49,50,51,58,61,76].074 mm, which contained 70–90 wt % of the particles. Particle size distribution was determined using an automatic sieve shaker, and the smallest sieve was only0. Budhatjoki and Väisänen  found that particles smaller than 45 μm contained the highest concentrations of phosphorus and potassium, or 59 wt % and 45 wt % of the total amounts, respectively. , and Orava et al.075 mm; therefore, 83. Fly ash samples were collected from the first two ESP fields because all particulate matter was removed before the third field.4 wt % from ESP 1 was in the smallest fraction.9 wt % of the particles from ESP 2 and 57.  found that the harmful elements (As, Cd, and Pb) were enriched in the finest ash fraction collected from second and third ESP fields (particle size d5018 μm); therefore, the coarse ash from first field (d5018 μm) would be better suited for fertilizer use. Moreover, in these studies, the harmful elements were mainly enriched to the smallest fraction. , Dahl et al. However, the harmful elements (As, Cd, Cr, Cu, Ni, Pb, Zn, and Hg) and nutrients (Ca, Mg, K, P, and S) were enriched in the field 2. Dahl et al.  studied the harmful element concentrations in paper mill fly ash compared with Finnish forest fertilizer limit values. According to Orava et al.  and Dahl et al. However, the concentrations of harmful elements (As, Cd, Cr, Cu, Ni, Pb, and Zn) were also highest in the smallest fraction. However, the FBCFA was only sieved to a particle size smaller than0. Harmful element (As, Cd, Cr, Cu, Ni, Pb, and Zn) concentrations were below the Finnish limit values; therefore, the FBCFA was suitable for use as a fertilizer.  studied the use of electrostatic precipitators as classifiers of ash. Ohenoja et al.  studied the effect of sieving on the distribution of harmful elements in FBCFA. Pöykiö et al. The Cd concentration was, at best, fivefold more in the field 3 when compared with field 1. However, the authors did not study the behavior of nutrients such as K and P, but they noted that Ca was enriched to some extent in the fine ash fractions.
This is all about the beneficiation methods iron ore,if you want to know more detail ,you can send your need to our email: ,or you can have a chat online!
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