Wet drum separators

Electro wet drum separators, 15 443 Electrowetting, in microfluidics, 26 962 Electrowinning, 9 637-642 14 760 16 154 from aqueous solutions, 9 637-639 ... 

Permanent shape, of shape-memory polymer, 22 355-356, 357 Permanent wet drum separators, 15 443 Permanent wet-strength resins, in paper manufacture, 18 115-116 Permanent Yellow FGL, pigment for plastics, 7 366t... 

Recommended Feed Volumes. Both feed volume and magnetic solids discharge rate should be balanced in selecting media recovery drum size. The feed rates typically recommended for single and double wet drum separators depend on drum diameter. For a 762 mm dia single drum, the recommended feed rate is 50—55 m3/(hrn) for either a 914 mm dia single drum or a 762 mm dia double drum, 55—70 m3/(h-m) for a 914 mm dia double drum, 70—95 m3/(h-m). 

Typically, ore bodies are relatively low in iron content. Iron minerals are finely divided in a gangue matrix. Wet grinding is usually required to liberate the iron minerals, although some beach sands may have liberated iron mineral values. Wet drum separators are limited to the treatment of material <10 mm. The magnetic drum separators applied are usually related to the grinding circuit required to liberate the iron mineral, and are typically designated by application as cobbers, roughers, or finishers. 

Aids can also be added prior to other separation processes. In sedimentation, for example, slow- or non-settling colloidal materials can be flocculated with sand or other cheap and dense solids, thereby making the agglomerates much more settleable. Probably the most famous process based on a similar principle is the Sirofloc process first developed in Australia by CSIRO (Australia) at around 1980 , and with at least three water treatment plants now operating in UK. CSIRO (Australia) in conjunction with AUSTEP Pty Ltd have gained much experience in the operation of wet drum separators when incorporated in the Sirofloc process for water treatment. ... 

Continuous magnetic separators such as the wet drum separators are widely used for beneficiation of ores and for recycling of magnetite or ferrosihcon from the heavy media pulps used for coal washing , or in the Sirofloc process in water treatment, as discussed in section 1.1.2. Wet drum separators are robust and surprisingly cheap to install and operate. The wet drum separator is the major workhorse but little is published on the efficiency of such devices. Suleski, for example, discusses a specific manufacturer s product. ... 

Wet drum separators can be operated with concurrent rotation or counterrotation. Concurrent rotation is better for separation of magnetics from nonmagnetics whilst counter-rotation is more efficient for high recoveries drum operated at 20 m /hour per metre of dmm width recovering magnetite particles of 50 microns would have a leakage of 50-200 ml/m (ppm)-... 

Suleski, J., New magnets and tank designs for magnetic wet drum separators . 

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