摘要:
A method for recycling noble metals from electronic waste materials and apparatus thereof. The method comprises the following steps: mechanically breaking up the electronic waste materials; removing rubber and plastic materials by electrostatic separation; removing ferromagnetic metals by magnetic separation; removing residual rubber and plastic materials by microwave pyrolysis; removing low-melting-point metals by indirectly heating using microwave; separating the noble metals from one another in turn from low-melting-point metal to high-melting-point metal for recycle. The apparatus includes a microwave housing. A filtering screen is positioned on the inside wall of the housing horizontally, and vertically-arranged and open-ended heating pipes are positioned over the filtering screen. The method and apparatus can adequately recycle resources in the electronic waste materials.
摘要:
The present invention is based upon the discovery that the level of adhesion between steel reinforcing elements and rubber products, such as conveyor belts, in which they are embedded can be significantly reduced by heating the steel reinforcing elements by induction heating to break down the level of bonding between the steel reinforcing elements and the rubber in the article. The present invention more specifically discloses a method for recovering steel reinforcements from a conveyor belt carcass having steel reinforcements which are bonded to the carcass of the conveyor belt, said method comprising (1) heating the steel reinforcements in the conveyor belt by induction heating to a temperature which is sufficient to substantially breakdown bonding between the steel reinforcements and the carcass of the conveyor belt and (2) applying a mechanical force to the steel reinforcements which is sufficient to separate the steel reinforcements from the conveyor belt carcass.
摘要:
The present invention discloses a resource utilizing method of refuses in urban and rural areas in which an acidification and anaerobic treatment tank, an additional anaerobic treatment tank, a biogas gathering tank and a gas generator set are provided and a gas inlet of said gas generator set is connected to the biogas gathering tank through pipes. The method comprises a refuses reception step, a uniform refuses distribution step, a primary magnetic separation step, a primary crushing step, a primary elutriation and floatation step, a uniform cutting step, an acidification and anaerobic treatment step, a selection and separation step, a buffering and adjusting step, an additional anaerobic treatment step and a sludge sedimentation and concentration step. In the present invention, the refuses need not pre-sort as the sorting and selection of the refuses are made throughout the overall process of the inventive refuses utilizing method. Thus the biggest bottleneck of the constraints in refuses disposal is removed. The present invention can make the anaerobic treatment method continuatively dispose the refuses, thereby thoroughly solving the problem that the non-anaerobic refuses such as waste plastics, waste fibers etc. can't be recycled and completely recycling resources in the refuses.
摘要:
The present invention is based upon the discovery that the level of adhesion between steel reinforcing elements and rubber products, such as conveyor belts, in which they are embedded can be significantly reduced by heating the steel reinforcing elements by induction heating to break down the level of bonding between the steel reinforcing elements and the rubber in the article. The present invention more specifically discloses a method for recovering steel reinforcements from a conveyor belt carcass having steel reinforcements which are bonded to the carcass of the conveyor belt, said method comprising (1) heating the steel reinforcements in the conveyor belt by induction heating to a temperature which is sufficient to substantially breakdown bonding between the steel reinforcements and the carcass of the conveyor belt and (2) applying a mechanical force to the steel reinforcements which is sufficient to separate the steel reinforcements from the conveyor belt carcass.
摘要:
Multistep recycling processes for preparing recycled plastic materials. The processes feature a sequence of operations selected from the group consisting of preprocessing operations, size reduction operations, gravity concentration operations, color sorting, sorting by thickness, friction, or differential terminal velocity or drag in air, surface to mass control operations, separation processes enhanced by narrow surface to mass distributions, blending operations, and extrusion and compounding operations. Plastic-rich mixtures are subjected to the process, and one or more recycled plastic materials are collected as outputs of the sequence of processes.
摘要:
L'invention concerne une méthode et une installation de recyclage des cartouches d'encre, lesdites cartouches d'encre comprenant un carter, un réservoir et des pièces mécaniques. Ledit carter et ledit réservoir comportent des éléments en matière plastique, ladite installation comportant d'une part, des moyens pour traiter lesdites cartouches d'encre selon une première (10) et une deuxième (28) étapes de broyage pour récupérer d'un côté lesdits éléments en matière plastique et d'un autre côté l'encre pulvérulente et les pièces mécaniques et d'autre part, des moyens pour récupérer (16, 18, 22), , un premier broyat desdits éléments en matière plastique ; selon l'invention lesdits moyens pour traiter lesdites cartouches d'encre comprennent : des moyens (26, 28) pour broyer ledit premier broyat selon ladite deuxième étape de broyage et, des moyens (34, 36) pour porter ledit second broyat à travers un courant gazeux de façon à séparer ledit second broyat dudit résidu d'encre pulvérulente.
摘要:
A method and apparatus for separating adhered paper from paper-covered gypsum board, involving passing the gypsum board past a magnet (16) to automatically remove ferrous materials from the gypsum board without stopping the process/apparatus, pulverizing (18) that gypsum board into a screenable mixture of pieces of paper and smaller separated gypsum board particles, and then screening (20) that mixture and segregating the pieces of paper from the gypsum board particles. This method and apparatus may optionally also include an area for manually pre-sorting and removing non-gypsum materials from the gypsum board prior to pulverization, may optionally also include additional screening steps, and may optionally also include passing the screened and segregated gypsum board particles past a second magnet. The magnets may have self-cleaning belts.