The passage of an ore pulp through the froth flotation process results in the production, after dewatering, of a finely divided concentrate. This intermediate product must be handled to the subsequent process facilities via belt or other types of conveyors, hoppers, bins, chutes and feeders, and the like. Flotation concentrate has some difficult handling properties … Read more

Dewatering of the fine clean coal fraction, — 28 mesh (595 microns) represents one of the most difficult and costly separations in typical plant circuits. Since 1969, the Screen Bowl Centrifuge has offered an economical alternative to filtration/thermal dryer combinations. The performance of Screen Bowl Centrifuges has been continuously modified and improved to dewater not … Read more

Factors Influencing Filter Cake Moisture Content The -28 mesh coal fraction has a major influence on the coal preparation plant product. This is due to the much higher specific surface area of this fraction which of course is filmed with water (unless themally dried). While 15-25% of the plant product might be -28 mesh, proportionate … Read more

The continuous vacuum filtration is the solid-liquid separation process that is nowadays most frequently used in the beneficiation industry all over the world. After a development time of several decades, the various filter types such as drum filter, disk filter, plate filter and belt filter can be considered as a sound fractional design ensuring a … Read more

The Thermal Disc is the only transport type dryer which can handle flotation, thickener underflow and pond recovery feed streams without the addition of a coarse fraction. The principle of operation differs from all other types of indirect dryers in that it is a volumetric displacement apparatus rather than first in first out. An operating … Read more

The dewatering of flocculated clay suspensions by compression in a centrifugal field has been investigated. The results are evaluated with regard to both direct applicability to centrifugal dewatering, in solid-bowl centrifuges for example, and indirect applications to gravity sedimentation systems. It is well known that sediment consolidation under gravity depends on structural characteristics such as … Read more

With the successful application of the Tube Press on fine china clays, further test work and product development was carried out on many mineral and mineral by-product applications. A laboratory size Piston Press was designed to test the wide variety of samples and determine filtration characteristics for each. Testing pressures of 2000 PSI (140 bar) … Read more

The yield of most types of dewatering installation has been shown to be related to cake specific resistance. Any sludge conditioner which significantly reduces the specific resistance will have a marked effect on the yield, and hence the size of the dewatering equipment required. Results from the current research show that the specific resistance behavior … Read more

Efficient filtration of fine kaolin particles plays a crucial role in processing of raw kaolin to a marketable product. Oftentimes, filtration is the rate controlling step of the whole process. As a consequence, plant production is dependent, to a great extent, on the rates being achieved in filtration.. Variation in particle size, coupled with varying … Read more