air jordan shoes cheap Ultrafine Milling - Grading

Ultrafine Milling - Grading system of pressure parameters

Ming + In order to obtain smaller particle size of crushed product. You can reduce the feeding amount to operate. However,[link widoczny dla zalogowanych], a small feeding amount to a certain extent, the crushed product size and not significantly reduced, or no crushing effect, it is because too few particles in the crushing chamber,[link widoczny dla zalogowanych], significantly decreased the probability of particle collision results. (5) If the refrigerant fluid is used superheated steam (usually P-1.10 ~ 1.40MPa), crushed by the size of the product obtained when the air working fluid is smaller particle size of crushed product (the same amount of material supply ); (6) whether the working fluid of air or superheated steam working fluid injection pressure has a lower limit, if the pressure is less than the lower limit is 27 No. 6 decreased grinding capacity of 29 fluid machinery, grinding grain products dramatically larger diameter and particle size uniform. Thus, while the injection pressure are important parameters for particle size of crushed product, but to maintain the necessary pressure is also very important to 5 grading machine crushing cavity pressure field and the relationship between performance installation process as previously shown in a flow classifier After the mill, after smashing through solid air two-phase flow, is the population of material flow classifier,[link widoczny dla zalogowanych], mill grading machine back pressure cavity must be a direct impact on the pressure field; grading machine downstream of the capture equipment is system and the induced draft fan, induced draft fan suction system established by the grading machine has a direct impact on the pressure field cavity. Therefore, as the particle size grading machine to ensure product velocity and pressure inside the field and the back pressure and negative pressure on. 5.1 system, the pressure field in the classifier methodology of this study determined by numerical and experimental method of combining study the classifier chamber the velocity and pressure field \and make the following assumptions: (1) classifier fully developed cavity flow field flow, the flow field as a symmetric distribution. classifier chamber is rotating the body, therefore, a long-time running their internal airflow + field will reach a steady axisymmetrical. (2) grader does not take into account the thermal effect on the body. (3) ignore the flow near the tangential force on the formation of three-dimensional flow field effects. calculated cross sections chosen from the population, and population Department at 180.'s place. In fact, the impact of the nearby population of only small spatial region. (4) incompressible flow field, close to the wall of the air flow to meet the no-slip theory stems 5 set is to verify that the flow field calculation intuitive understanding of the correctness and grading machine cavity the velocity and pressure distribution. In this study, five L elbow Ww6-6 spherical probe, the signal measured by the spatial coordinate transformation and data processing speed of the same point and pressure measured 3 times averaged 5.2 Classifier field distribution of cavity pressure and conclusions grader cavity pressure field calculated and measured values, such as network 4 shown in the figure for the classifier inner radius R , r for the grade rotor diameter + r is the radius measured point grading area, (r-) / A r.) 10 to the rotor surface, (r-r) / (R a) = 1 for the body wall. the following conclusions can be drawn from the graph: {Bu R-J Figure 4 The distribution of pressure in the radial position (1) the classifier cavity flow, and subsequent rotation of the rotor vortex suction pump, completely negative pressure. In simplified wall surface, the greatest pressure, with the radial movement of the rotor, pressure gradually decreases (ie the highest negative pressure). rotor high-speed rotation + so that the pressure has dropped, but the trend did not pressure distribution change. negative pressure in the 10.6kPa. (2) the dolomite is crushed material, raw material particle size Ds. a 36.45 \A 4.18m, by classification, the classification of grain size in the minimum error of 7.8% efficiency rating under the particle size of 2.25m,[link widoczny dla zalogowanych], the product particle size grading D;. = 0.9 ~ 1.5m. (3) The pressure distribution, in line with \the classification of ultrafine particles is more favorable than the pressure or atmospheric pressure. References l Young Silks blog. Ultrafine Milling (principles, equipment and applications). Chemical Industry Press, 19882 Zhuo Zhen, Liu Xuedong, Huang Yu new flat Air jet milling flow chromatogram .96 Powder Technology Japan Symposium,[link widoczny dla zalogowanych], 19963 Ito are. On the large-scale jet mill STJ issue .96-Japan Powder Technology Symposium, 19964 + Liu Xuedong Chen Zhuo, Huang Yu new. centrifugal air classifier of superfine (I). Chemical Engineering, l998; 26 (j): 24 ~ 285 Liu Xuedong, Zhuo Zhen, Huang Yu new centrifugal air classifier of superfine (��). Chemical Engineering, 1998; 26 (6) Chen Jiang Fen 2l3016 oil, Changzhou, Jiangsu Institute of Chemical Technology Department of Mechanical Engineering

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