Process for purifying granular material e.g. oil-contaminated sand comprises adjusting the solids content in the attritor by removing coarse material and by controlled recycling of this coarse fraction for addition to the attrition vessel
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Separation and disposal of sandy fraction in processing bauxite involves removing aqueous sodium hydroxide solution from hot mixture in hydrocyclone and separating sand, red mud and residual solution on screen
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Suspension of water and betonite and other additives removes tunnel spoil for subsequent separation and re-use of suspension
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Waste water purification bio-reactor
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Hydrocyclone
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Sorting process for sepg. polyethylene@ from polypropylene@ - by heating the water particles with polyethylene shrinks and forms heavier fraction whilst polypropylene@ can then be removed by air elutriation
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Sepn. of mixts. contg. HDPE prods. and LDPE prods. - by crushing the mixt., washing and drying as required, and sepg. by air screening to give dry HDPE chips and dry LDPE chips
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Process for recovering the constituents of materials present in the form of a composite of at least two firmly bonded layers of different plastics, and arrangements for carrying out the process
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Clarifying thickener, and process operating therewith
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Device for distributing the inflow of suspension into the inlets of a number of hydrocyclones
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Hydro-cyclone and hydro-cyclone parts, respectively, as well as a method for the production thereof
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Hydrocyclone, or hydrocyclone components, and method for manufacturing it
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METHOD FOR REPROCESSING THE PET OF USED, PET-CONTAINING PRODUCTS, AND ARRANGEMENT FOR IMPLEMENTING THE METHOD
