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... 2-inch (50.8 mm) diameter hydrocyclone was employed to produce an overflow of "expected" −15 µm size fraction and another 10 mm diameter one used to produce an overflow of approximately −5 µm in size. (Table 5). ...Context 2
... trace of the overflow from the 10 mm hydrocyclone (K-kaolinite, Q-quartz). Based on the results of the 20-second time samples from the 2-inch and 10 mm hydrocyclones (see Table 5 & Table 6), the kaolin grade and recovery results were calculated and are tabulated in Table 11. It was found that the 2-inch hydrocyclone recovered to the overflow 78% kaolin at a grade of 71% from the −125 µm fraction. ...Context 3
... fraction (R) of the feed liquid recovered in the underflow was calculated in the separation processes of the two hydrocyclones (see Table 5 & Table 6). ...Context 4
... mass balance calculation for the 2-inch hydrocyclone (see Table 5) showed that the feed dry mass flowrate was 0.21 tph producing an overflow (d 50 of 16 µm) of 0.06 tph (300 tpa) at a grade of 70.6% and a recovery of 77.7%. For the 10 mm hydrocyclone, the mass balance calculation (see Table 6) showed that the feed dry mass flowrate was 0.007 tph producing an overflow (d 50 of 3.9 µm) of 0.002 tph (9.5 tpa) at a grade of 82.5% and recovery of 32%. ...Similar publications
The fracture behaviors of rocks under dynamic loading are significantly affected by flaws. Understanding regarding this fundamental mechanism of flaw-induced dynamic fracturing could aid in reducing dynamic geohazards in deep rock engineering. In this study, a series of dynamic loading experiments are conducted on conjugate flawed white sandstone s...
Citations
... White kaolinite (Al 2 Si 2 O 5 (OH) 4 ) (>90 mass%) was obtained from Wadi Araba, Jordan [24] and used as received. Potassium sulphate (K 2 SO 4 ) was purchased from Merck, USA. ...
In this study, a novel slow-release fertilizer (SRF) consisting of kaolinite and K2SO4 was prepared, employing the process of mechanochemical milling in a planetary ball mill. To obtain the optimum milling time and speed, several samples were made at fixed mass ratios of kaolinite: K2SO4 (3:1). The milling rotational speed ranged from 200 to 700 rpm for 120 min. Different milling times ranging from 60 to 180 min at fixed 600 rpm milling speed were also investigated to evaluate the incorporation of K2SO4 and to measure the liberation of K+ and SO42− ions into solution. The properties of the studied samples were analyzed by Fourier transformation infrared spectrometry (FTIR), thermal gravimetric analysis (TGA), and ion chromatography (IC). The mechanochemical process is a green chemistry procedure that is successfully applied to incorporate K2SO4 into the amorphous kaolinite structure. The slow-release performance was evaluated by determining the K+ and SO42− content in the aqueous solution upon leaching. The optimum released amount of K+ after 24 h was 32 mg L−1 for the milling conditions of 180 min and 700 rpm, indicating that K2SO4-kaolinite has good slow-release properties. The novel SRF is cost-effective, environmentally friendly, and improves the fertilizer’s efficiency in many agricultural applications.
