deep cone thickener dct is key equipment in cemented paste backfill cpb technology. however, rake blockage occurs frequently in dct during the dewatering process of the unclassified tailings being thickened from dilute slurry to thickened tailings or paste. rake blockage has disastrous effects on the cpb operation.
beginners guide to thickeners. the flocculant addition should be adjusted to suit the solids input and is mostly affected by the processing rate. simple systems with constant feed can use flocculant pump speed control, more advanced control systems utilize a ratio controller to maintain a constant grams per ton dose rate.
kinross golds kupol mine elected to use deep cone thickeners for their counter-current decantation ccd circuit as well as the grind thickener. deep cone thickeners are commonly used for ccd circuits in the alumina industry, but this is the first application of that technology outside of alumina. the project started
fls pioneered the use of deep cone thickening for applications such as; mine backfill, sub-aqueous tailings disposal, ccd circuits, filter feed, cement kiln feed, reactor feed, and in-pit tailings
thickener rakes and supports. the whole assembly is braced to the shaft by means of tie rods so that the rakes and rake arms form two trusses: one in the horizontal and one in the vertical plane. the use of a spider, and built up sections, eliminates excessive weight and assures a stronger unit.
for a thick, heavy syrup, use equal parts sugar to water, then boil them together until the sugar is dissolved. an ultra-light syrup requires a 10-to-1 ratio of water to sugar. for canning, add the fruit to the pan after the syrup is made, then ladle the contents into jars. add an agent. cornstarch is the most common additive used for thickening syrup.
thickening and clarification. this led to the development of the continuous thickener in its present day configuration in 1905. the use of continuous thickeners rapidly expanded to the chemical, sanitary and water treatment industries.
the conventional thickener. likewise, thickeners are often used for storage to facilitate the continuous feeding of downstream filters or centrifuges. historically thickeners were introduced to the mining industry in 1905 when the beneficiation of ores by froth flotation was invented in australia.
deep cone thickeners are based on static decantation principles allowing for minimal footprint and virtually no moving parts. the deep cone and cylinder section imparts a greater pressure head on the settled slurry thus producing a higher percentage solids content than that of a standard rake thickener.
fill the cups with ice first, then set them in the freezer. then fill a large bowl with more ice and using a large spoon add more ice to the top to make the snow cones rounded. use an ice cream cone holder to serve them and keep them upright. we used a couple new flavors of kool aid; mixed berry, cherry limeade and also grape.