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dynamic classifiers improve pulverizer performance and more,in many cases, replacing a pulverizer’s static classifier with a dynamic classifier improves the unit’s grinding performance, reducing the level of unburned carbon in the coal in the process..fiber optic sensors: fundamentals and applications,classification of optical fiber sensors by transducing approach . • can monitor dynamic strain over a broad range of frequencies – vibration signature • there is a trade-off between distance conceptual use of static and dynamic strain monitoring in a bridge application..classification performance of model coal mill classifiers,the classification performance of the air classifier in a vertical coal mill determines the size of pulverized coal particles. thus, the classification performance will influence the ignition, burning, and burnout of the coal particle, and no x formation in the furnace as well [, , , ]. the first generation of the coal mill classifier used static guide vanes to produce a swirling flow to classify the particles by centrifugal force [, , , , , ]. the modern coal mill classifier….boiler upgrades: upgrades for performance, reliability,the pv-pro system is an integrated performance, recovery and optimization (pro) system. depending on your mill type, this upgrade includes an improved throat/air port, upgraded grinding zone and an adjustable static or dynamic classifier..
if the output y i type is a categorical or nominal finite set (for example, metal or insulator), it is called a classification problem, which predicts the class label for unknown samples. else, if the outputs are continuous real-valued scalars , it is then called a regression problem, which will predict the output values for the unknown examples..classification of measuring instruments,the instrument used for measuring the physical and electrical quantities is known as the measuring instrument. the term measurement means the comparison between the two quantities of the same unit. the magnitude of one of the quantity is unknown, and it is compared with the predefined value. the result of the comparison obtained regarding numerical value..pump power calculation formula,specific speed of pump. the specific speed “nq” is a parameter derived from a dimensional analysis which allows a comparison of impellers of various pump sizes even when their operating similar q -h range.. the specific speed can be used to classify the optimum impeller design. specific speed of pump (nq) is defined as the speed in rpm at which a geometrically similar impeller would run if
additionally, the difference between dynamic modulus of elasticity provided by the plg (edyn) and the result obtained using the correction factor 'a' (moeplg) are also noted. as shown in the table, according to the classification criteria of plg two of the three batches have a greater dynamic modulus of.power plant interview questions & answers,draught is defined as a small pressure difference required between the fuel bed (furnace) and outside air to maintain constant flow of air and to discharge the gases through chimney to the atmosphere. draught can be obtained by chimney, fan, steam jet (or) air jet (or) combination of these. 46. write about classification of draught?.closed-loop control of mechanical ventilation: description,introduction. over the last 10 years there have been more than a dozen good reviews of closed-loop control of mechanical ventilators and the various modes they have generated. 1–17 without exception, those authors took the approach of “name and describe,” using the mode names coined by manufacturers and the descriptions from the operator's manuals.
power taken by the millthe power taken up by the vertical roller mill is givenby the following expressionn =( i. µ .kt .dr .w.dm. π.n ) / 60 k wwhere ,i = no.of rollersµ = friction factor (0.07-0.14 for raw materials , 0.09-0.1 for coal)Κt = specific roller pressure , kn/m2(400 – 800 for raw and coal)dr = roller diameter , mw = roller.particle size & particle shape analyzers :: microtrac.com,particle size & shape analysis. for the physical characterization of particles microtrac offers a range of optical particle analyzers. microtrac is the only worldwide supplier of dynamic image analysis, static image analysis, laser diffraction and sieve analysis equipment with an extensive understanding of the strengths and weaknesses of each.vibrating screen working principle,source: this article is a reproduction of an excerpt of “in the public domain” documents held in 911metallurgy corp’s private library. screening-capacity screen-capacity vibratory-screen-design-vibrating-screen-types-selection screen frame sizes and scale-up problems major screen components. now, essentially you can break screens down into three major components, namely:
mineral and coal processing encompasses unit processes required to size, separate, and process minerals for eventual use. unit processes include comminution (crushing and grinding), sizing (screening or classifying), separation (physical or chemical), dewatering (thickening, filtration, or drying), and hydrometallurgical or chemical processing..ball mill design/power calculation,the basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, bond work index, bulk density, specific density, desired mill tonnage capacity dtph, operating % solids or pulp density, feed size as f80 and maximum ‘chunk size’, product size as p80 and maximum and finally the type of circuit open/closed.difference between mealy machine and moore machine,moore machine – a moore machine is defined as a machine in theory of computation whose output values are determined only by its current state. it has also 6 tuples: (q, q0, ∑, o, δ, λ) q is finite set of states. q0 is the initial state. ∑ is the input alphabet. o is the output alphabet. δ is transition function which maps q×∑ → q.
types of air-preheater and their advantages and disadvantages . today we discussed about a very important topic related to boiler combustion process helping which is air preheaters in this article we discussed about types of air-preheater and their advantages and disadvantages .air preheater is a device which is used for the preheating the combustion air supplied to boiler for.compare the difference between similar terms,the key difference between simile metaphor personification and hyperbole is their function. a simile is a comparison between two unlike things using words ‘like’ or ‘as’ while metaphor is a comparison between two words but without using ‘like’ or ‘as’..interview questions on vibration measurement,the gap voltage is set at –8.00v dc i.e. equal to a gap of 40 mill (between the probe tip and the measuring surface). or at -10.00v dc as per the system standard. why an eddy probe and its probe driver is a matched pair? eddy probe output is always measured after the probe driver.
underbalanced drilling (ubd) in underbalanced drilling (ubd), the hydrostatic head of the drilling fluid is intentionally designed to be lower than the pressure of the formations that are being drilled. the hydrostatic head of the fluid may naturally be less than the formation pressure, or it can be induced by adding different substances to the.diesel fuels technical review,coal dust, began to experiment with one of them. this fuel change, coupled with some mechanical design changes, resulted in a successful prototype engine in 1895. today, both the engine and the fuel still bear his name. the ﬁrst commercial diesel engines were large and operated at low speeds. they were used to power ships, trains, and.fritsch sample preparation and particle sizing,27312 pittsboro, nc. mobile +1 919 623 9666. managing director. sebastian fritsch. fritsch gmbh - milling and sizing. industriestrasse 8. 55743 idar-oberstein. phone +49
characterization of the tailings. the basic geotechnical properties of the four tailings are summarized in table 1, and fig. 1 displays the grain size distributions. the specific gravity of the coarse and fine iron tailings are 3.23 and 3.08, respectively, which are consistent with those of metal tailings but much higher than those of natural soils..load cell application and test guideline,is no voltage difference between points a and b. as load is applied to the cell, the resistance of the tension gages increases, while that of the compression gages decreases. the bridge now becomes “unbalanced” and a voltage difference (signal) proportional to applied load can be measured across points a and b. electronic