The material velocity of a circular vibrating screen can be calculated from the corrected theoretical speed of the product formula written below. Example: Determine the material velocity of a screen vibrated at 900 RPM with a 12 mm stroke and 20° degree inclination angle. To calculate the bed depth of the material, the following formula is used.
Depth of Bed Formula. T x K D = 5 x S x W D = Depth of Material in Inches T = TPH Over Screen Deck K = Number of Cubic Feet per Ton of Material S = 70 FPM W = Net Width of Screen in Feet (nominal width 6”) Affect of Water on Capacity.
Vibrating Screen Deck Required Screening Area Formula. How to determine required screening area. A separate calculation is required for each deck of a multiple deck screen, although the same formula is utilized for each calculation.The balance of water is added through a series of spray bars located over the screening deck.
Basic formula for calculating screen area (per deck) • U: Required screening area (Sq.ft.) • A: Nominal capacity for separation • B: % Oversize (.33 1.21) • C: % Halfsize (.40 2.40) • D: Deck location (.80 1.0) Screening Area = U / (A x B x C x D x E x F x G x H x J) • E: Wet screening (1.0 1.25) • F: Material weight (.30 1.50) lbs/cu.ft •
material than a screen that takes fresh feed. The capacity decreases with position according to capacity factor K5 K 5 1.1 0.1S (4-10) where S represents the deck position; 1 for top deck, 2 for 2nd deck and so on. The screen angle factor K6 The standard inclined screen has an angle of inclination of 15 o. Lower angles of inclination increase
Sep 11, 2012· The Feed material to the screen contains 60% (- 30mm). After screening the oversized fraction contains 10% (-30mm) undersized contains 95% of (-30mm). Calculation: Let us find the Values of A,B and C for calculating Efficiency, A= 60/100,B = 95/100,C = 10/100. Efficiency -1 = (A-B)/(C-B) = (0.6-0.95)/(0.1-0.95) = 0.411
WHAT IS A VIBRATING SCREEN? 3/1/2016 2 Calculating Screen Efficiency K = Number of Cubic Feet per Ton of Material S = 70 FPM W = Net Width of Screen in Feet (nominal width 6”) Affect of Water on Capacity Size of Opening Factor E 1/32” 1.25 1/16” 1.75 1/8” 2.00
Applies when water is sprayed on the material as it moves down the screening deck. Generally, about 5 to 7 GPM of water is used per STPH of solids fed to the screen. The volume of water required should be supplied so that a portion is combined with the solids into a feed box to prepare a slurry feed to the screen.
material than a screen that takes fresh feed. The capacity decreases with position according to capacity factor K5 K 5 1.1 0.1S (4-10) where S represents the deck position; 1 for top deck, 2 for 2nd deck and so on. The screen angle factor K6 The standard inclined screen has an angle of inclination of 15 o. Lower angles of inclination increase
Oct 11, 2019· Vibration analysis, the acquisition and analysis of data regarding the vibrational characteristics of the machine, is one of the tools for ensuring optimum vibrating screen performance. Vibration analysis collects data on parameters such as natural frequencies, displacements and stroke amplitude, and the operation of bearings and gears.
Jan 01, 2016· The above discussion indicated that the capacity of a screen is related to the screen characteristics and the material characteristics. The screen characteristics include: 1. available area, 2. aperture (size and type), 3. slope, 4. method of vibration and. 5. number of decks. The material characteristics include 1. size and shape of material
The most commonly used measure of screen efficiency is the cumulative weight of material that has passed the screen in any time interval, compared to the total weight of undersize in the feed, expressed in a percentage. This can be reversed, when the oversize is the product to The Horizontal Vibrating Screen: 840 rpm,1/2” stroke at 45°.
Linear vibrating screen Suitable for all applications. Dewatering screen for dewatering and removal of mud and sludge. Sieve bends mainly used for coal dressing. Circular motion screen suitable for long-living and economical operation. Double frequency vibrating screen Efficient screening of sticky material. Flip flop screen For difficult to
gases or anything else. One ton of total material input will only give one ton of total output, i.e. total mass of input = total mass of output. A material balance is an accounting for material. Thus, material balances are often compared to the balancing of current accounts. They are used in industry to calculate mass flow rates of
Material balances can be based on total mass, mass of dry solids, or mass of particular com-ponents, for example protein. EXAMPLE 2.1. Constituent balance of milk Skim milk is prepared by the removal of some of the fat from whole milk. This skim milk is found to contain 90.5% water, 3.5% protein, 5.1% carbohydrate, 0.1% fat and 0.8% ash. If the
Metallurgical ContentScreen Vibration PatternsVibrating Screen DesignScreen CapacityVibrating Screen CapacitySCREENINGVibrating Screen CapacityVibrating Screen SPECIFICATIONSFloating Circle MotionWhat It IsHow It WorksMethods of Fastening Vibrating Screen ClothDouble Deck Vibrating Screen—Floor MountedScreen Frame Sizes and Scale-Up Problems and Fundamentals of Vibrating Screen