Filter cloth coarse

Another variation of the string discharge is the use of a thick plastic belt which is perforated by conical openings. The dmm is covered with filter cloth and the belt covers the cloth for the filtration and dewatering operations. The soHds fill the perforations in the belt and then leave the dmm with the belt to be discharged by air blow as pellets. This is an effective way of pelletising coarse mineral ores. 

Flexible metallic media are especially suitable for handling corrosive liquors and for high-temperature filtration. They have good durability and are inert to physical changes. Metallic media are fabricated in the form of screens, wire windings, or woven fabrics of steel, copper, bronze, nickel and different alloys. Perforated sheets and screens are used for coarse separation, as supports for filter cloths or as... 

During operation the slurry is pumped under pressure into a vessel that is fitted with a stack of vertical leaves that serve as filter elements. Each leaf has a centrally located neck at its bottom which is inserted into a manifold that collects the filtrate. The leaf is constructed with ribs on both sides to allow free flow of filtrate towards the neck and is covered with coarse mesh screens that support the finer woven metal screens or filter cloth that retain the cake. The space between the leaves may... 

The filter structure consists of a stack of plates attached to a hollow shaft which are mounted inside a pressure vessel with each plate covered with a suitable filter medium. The slurry is fed under pressure into the vessel and the cake, which is retained by the filter medium, forms on the top of each plate whilst the filtrate passes through the hollow shaft further to the process. Filter sizes may vary but generally the maximum is 60 m area and designed for a 6 bar operating pressure. Each circular plate in the stack is constructed with radial ribs that are welded to the bottom and support a horizontal coarse mesh screen which is covered with a finer woven metal screen or filter cloth to retain the cake. The bottom of the plate slopes towards the hollow central shaft which lets the filtrate flow freely through circumferential holes and further down the shaft to the filtrate outlet. The clearance between the plates is maintained by special spacers with "o" rings to positively seal between the slurry that surrounds the plates and the shaft that collects the filtrate. The height of the spacers determine the clearance for cake build-up and may be replaced to meet various process conditions. 

Perforated bowls are used when relatively large particles are to be separated from a liquid, as for example in the separation of crystals from a mother liquor. The mother liquor passes through the bed of particles and then through the perforations in the bowl. When the centrifuge is used for filtration, a coarse gauze is laid over the inner surface of the bowl and the filter cloth rests on the gauze. Space is thus provided behind the cloth for the filtrate to flow to the perforations. 

Deep bed or granular batch, for 0.01 to 50 J,m (see filter. Section 16.11.5.13). Fixed bar screen batch, grizzly (the filter cloth is made of rods and bars) removal of very coarse material of diameter >2 to 5 cm low concentration of solids <15 mg/L bars at 30 to 60° to the horizontal that can be cleaned manually or automatically. Microscreen (rotary drum or disk). Batch, removal of participles of diameter >20 jm 20 mg/L solids feed concentration. 

Centrifuges (Fig. 3.7), sometimes called hydro-extractors or spinners , are another very common form of filter. They consist of a basket or cage, mounted horizontally or vertically, with holes in the side, which is rotated at a speed such that the centrifugal force throws the contents outwards. In a domestic spin drier the holes are large enough to allow the water to pass but not the clothes. The same principle is applied with a slurry but a filter cloth is fitted inside the basket to retain the solids in the suspension. It is usual to fit a coarse-wire gauze behind the cloth to increase the area available for the liquid to be thrown out. 

Fibrillated tape yarns are produced from narrow width polypropylene films that are converted into relatively coarse filaments using special cutters and pins. These yarns find only limited use in filtration, mainly as coarse, open weave structures to provide support or drainage fabrics behind finer grade filter cloths. 

The continuously fed, moving bed machines use a metal screen instead of filter cloth and this makes them suitable for dewatering of coarse solids only. The baskets are either conical, with or without a scroll (or a vibration device) to aid the movement of the sohds across the screen, or cyhndrical, in the... 

The elements or leaves normally consist of a coarse stainless-steel mesh over which a fine (often metal) gauze or filter cloth is stretched and sealed at the edges. The leaves are in parallel, each connected to a header and, almost without exception, the filtration is from the outside inwards through the gauze. These filters are all essentially batch operated and most require the use of a filter aid for pre-coating, because cloudy filtrates and blinding would otherwise occur. 

Anode slimes Anodes must be bagged individually and carefully positioned relatively intolerant to anode slimes A removable one-piece filter cloth may be used with a permanent, coarse mesh tolerant to anode slimes... 

Charcoal - Get briquettes from the supermarket. Place several in a bag made of coarse cloth and place over several layers of newspaper on a bench top or concrete floor. Beat the hell out of the bag with a hammer. Charcoal powder will filter through the cloth and deposit on the newspaper. 

Dumont s filter consists of a wooden box of j he form of a four-aided truncated pyramid with a double bottom. The inner bottom is a metallic plate pierced with numerous holes upon it a cotton cloth is kid, and coarse-grained animal charcoal moistened with water is then Bpread layer by layer each layer being rendered of uniform thickness, and packed or pressed closely together by means of a sort of trowel. When the bone-black has been thus formed into a compact bed or stratum of about fifteen or eighteen inches in thickness, and Within five to ten inches fi om the top of the box, it is covered with another cotton cloth, and with another metallic plate pierced with holes, The object of the second cloth and metallic cover Is to collect any substances which would otherwise obstruct the interstices of tho superior stratnm. of the bone-black—an inconvenient accident which is easily prevented by the use of such a cover, and this cover is readily exchanged for another, should it be no mo itself obstructed. The superior covir is only of use when the previously described filtration through the cotton bag or leaf filter is omitted. 

Raw methylphenyldimethoxysilane is separated from muriatic carbamide in druck filter 8, which has been filled with coarse calico, filter paper and glass cloth and compressed with nitrogen (0.3 MPa). After filtering, the raw material under the nitrogen pressure of 0.15-0.3 MPa is sent into collector 9. When the filtering is finished, the pressure in receptacle 7 is reduced to atmospheric the druck filter is cleaned from the cake and refilled. 

After coammonolysis the product in filtered in nutsch filter 9 filled with coarse calico, filter paper and glass cloth. At a pressure below 0.2 MPa the solution is filtered from the sediment of ammonia chloride. The filtered solution enters collector 13 and then distillation tank 14. 

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