摘要:
Procédé de séparation sélective et simultanément d'augmentation de pureté de deux matériaux organiques de synthèse, usagés, fragmentés, de densité distincte, en mélange entre eux et en mélange avec des matériaux contaminants divers à éliminer, au moyen de milieux aqueux denses, dont chaque milieu aqueux à une densité choisie « ds. » comme seuil de séparation desdits matériaux organiques et contaminants, caractérisé en ce que devient qui se caractérise en ce qu'il comporte : a) une étape de séparation du mélange en deux flux, l'un sumageant (a1) l'autre décantant (a2); b) une étape de séparation des composés du flux surnageant (a1), en éliminant le surnageant et en recueillant le décantant formé des fragments du premier matériau organique de synthèse usagé recyclable. c) une étape de séparation des composés du flux décantant (a2) en recueillant le surnageant et en éliminant le décantant, d) Une étape de séparation des composés du flux surnageant (c) en éliminant le surnageant et en recueillant le décantant formé des fragments du deuxième matériau organique de synthèse usagé recyclable.
摘要:
The invention is related to mining and can be applied to underground and open-pit development of mineral deposits of various kinds. The offered method includes a gravity beneficiation of mined rock in a water-salt heavy liquid with delivery of light fraction to her destination place in the heavy liquid representing a solution of one or several mineral salts in water. The surface of mineral components of the rock mass after crushing and desliming, before their submersion into the heavy liquid is coated with an easily solidifying low-melting-point slippery coating made of a substance chemically inert to the heavy liquid and immiscible with the latter, with a subsequent cooling the covering minerals and their separation in such kind according density in the heavy liquid. Regeneration of the heavy liquid is carry out by separation of drainage flows according their density on light fraction (inert substance) and heavy fraction (a heavy liquid) and returned afterwards to the head of the technological process with their simultaneous cooling. For applying protection layers inert with respect to mineral salt solutions and encapsulating the surfaces of separated minerals prior to submerging the rock mass into a heavy water-salt medium, various organic easily-solidifying water-immiscible substances, first of all, various oil treatment products, may be used.
摘要:
Methods, systems, and media for use in separating mixtures. A slurry including a separation liquid and one or more particulate media materials id provided. A classification separation id performed on the slurry to produce a classified media having a controlled particle size distribution of the particulate media materials. The classified media is combined with a mixture to be separated to generate a separation mixture. The particle size distribution can be controlled based in part on characteristics of components of a separation system to be used in subsequent density separations.
摘要:
A planar magnet for magnetic density separation, comprising an array of pole pieces succeeding in longitudinal direction of a mounting plane, each pole piece having a body extending transversely along the mounting plane with a substantially constant cross section that includes a top segment that is curved to distribute the magnetic field associated with the top surface of the pole piece such that its strength transverse to the mounting plane is substantially uniformly distributed in planes parallel to the mounting plane, the curved top segments having a width (w) in longitudinal direction of the mounting plane and a maximum height (h) transverse to the mounting plane, wherein the top segments of successive pole pieces are unequal in height and/or width.
摘要:
The present invention relates to a method and kit for discontinuous density gradient centrifugation to separate a minimum of two substances in a sample. In the method and kit use is made of colloidal density media and low density solutions, such as buffer solutions. The sample is mixed with colloidal media and placed at the bottom of a centrifuge tube and desired substances flotate to the lower density media following centrifugation.
摘要:
A system and process for continuously separating and recovering materials from a mixture of particulate solids, having a plurality of different specific gravities, which uses a plurality of liquid media of different specific gravity to effect the separation. The recovered fractions each having a different specific gravity. A first separation vessel (214) receives the mixture. The material contacts a first liquid medium having a first specific gravity of about 1.0. A first part of the mixture rises in the liquid medium as float particles. The remaining part settles as sink particles. A second separation vessel (250) receives the sink part from the first separation vessel (214). The material contacts a second liquid medium having a second specific gravity and a first particle of the material rises in the liquid medium as float particles while the remaining settles as sink particles.
摘要:
This disclosure provides microbes for the preferential separation of Scandium (Sc) from rare earth element (REE) containing materials, as well as methods of use thereof.
摘要:
Method for recycling electronic waste are included that enable electronic waste separation and recycling to a high level of separation efficiency and end product purity which are improvements over prior methods. In preferred methods, separated electronic waste which has been subjected to magnetic separation to remove ferrous materials and shredded to an average width of less than about 40 mm is provided and then introduced to a first water tank treated so as to have a specific gravity of about 1.20 to about 1.30 and allowing a first portion of the electronic waste to float in the first water tank and a second portion of the electronic waste to sink in the first water tank, and the second portion of the electronic waste is introduced to a water vibrating table, wherein the remaining second portion of the electronic waste leaving the water vibrating table yields at least about 98% sorted recovered materials comprising pure and clean copper, aluminum, wire, circuit boards, stainless steel and mixed plastics. Other preferred embodiments employ use of a horizontal friction dehydrator in secondary separation, use of color sorting of various plastics, employing fresh-water fed vertical dehydrators at end steps of separation and use of a high purity electrostatic separation process for final products.
摘要:
The invention relates to mining of fossil energy minerals and can be applied to the beneficiation and utilization of various kinds of coal and shale oil as a solid fuel for thermoelectric power stations. The object of the invention is to reduce the energy consumption of mining energy generation, to eliminate solid fuel loss, to reduce water consumption and to protect the environment. To this end, the beneficiation process is performed underground, in the immediate proximity to the place of beneficiation waste stowing, using aqueous salt solution with a density intermediate between those of the target component and waste rock. The regeneration of heavy liquid from final beneficiation tailings is performed by washing with non-aqueous volatile liquid, with subsequent drying by the subsurface heat after placing these tailings in the worked-out space. The resulting vapors are compressed and condensed; thus regenerated non-aqueous liquid is returned for washing the beneficiation tailings, while effluents produced by washing are separated into aqueous and non-aqueous components by heat released at the liquefaction of the non- aqueous liquid vapors. The enriched solid fuel remaining in the floatable state is delivered by its flow to the thermo¬ electric power plant, where it is separated hydromechanically from liquid component, washed with water, dried and directed to combustion. The effluents from washing with water are evaporated with heat released at the condensation of the working medium of the power station thermodynamic cycle. Then they are mixed with drains from solid fuel delivered to the destination, and returned to the starting point of the process.