Separation Methods for Waste and Environmental Applications


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Then, the adjusted operating parameters of the crushing machines would change the size distribution of the five samples and raise the separating efficiency. But, the effect of aggregation was found during the process of feeding sample 5 and opposed regular production on superfine powders.

So, improving the automatic feeding system to decrease electrostatic adherence among fine powders can settle the problem of aggregates The materials coming out of separators were metallic and nonmetallic. The process for type B materials was easy because the metallic part in type B metals was only copper, and it can be sent to the smelting plant directly. Generally, they were an epoxy resin or phenol formaldehyde resin, glass fiber, and brominated flame retardant. According to the regulations and under the opinion pressure, the storage of these nonmetallic materials is limited.

Traditionally, incineration and landfills are currently available to process these materials. How to reuse them in a suitable way is a challenge. Recently, Mou peng et al. But, in their study, the waste nonmetallic materials were used as filler, and their products did not appear on the market. To have suitable disposal and expand the applying prospect of waste nonmetallic materials, we made a kind of nonmetallic plate abbreviated NMP whose main component was nonmetallic materials. The NMP was produced by using a hot-press forming technology, as shown in Figure 8.

The nonmetal materials were mixed with a few additives and pressed by the hot-press former. The NMP could be used as building materials tiles, partitions, insulating boards, etc.

Historical background

Additional experimentation using different addition agents, temperature, and pressure is needed to explore the availability of NMP. Google Scholar There is no corresponding record for this reference. Combustion of plastics contained in electric and electronic scrap. Integrated recycling of non-ferrous metal at Boliden Ltd.

Disassembly sequence planning for products with defective parts in product recovery. New wet treatment for components of incineration slag. The eddy current sepn. It was possible to achieve the sepn. Processing, material characterization, and the sepg. Jirang, C. Optimal high-voltage energization of corona electrostatic separators. IEEE Trans. Corona electrostatic separators for recovery of waste non-ferrous metals.

Multifunctional corona-electrostatic lab. A comparison is made between the current-voltage characteristics of wire-, needle-, and blade-type electrodes. The theor. Charging of particulates in the corona field of roll-type electroseparators. This study focused on the use of corona discharge in electrosepn. Crude theor. Stable corona discharges were obtained when energizing that electrode at both pos.

Journal of Environmental Chemical Engineering

The voltage-current characteristics of the corona discharge from the new electrode were detd. In each case, attention was paid to the upper acceptable limit of operating voltage, as well as to some side effects of corona discharges, such as audible noise and ozone generation. The efficacy of corona charging was assessed by electrosepn.


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Several practical considerations were formulated, based on a crit. High-voltage supplies for corona electrostatic separators. Electrostatic separation and its industrial application for the processing of different mixtures of recycling materials. Mechanical separation-oriented characterization of electronic scrap. Crushing performance and resource characteristic of printed circuit board scrap.


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Nonferrous Met. Recent progress in electrostatic separation technology. A review with 34 refs. Applications of electrostatic sepn. By classifying the electrostatic separators with the charging method and with the kind of sorting equipment, recent progress in electrostatic separators is presented and also future trends are discussed. Principles and the practical structure of the separator employing corona charging and induction charging are described in detail. Basically these charging and sepn.

Triboelectrification has been employed to charge materials with small differences in conductivities. This is the case of the sepn.

Sorting and Recycling Facility - Follow the Process

As an example of a practical separator, recent prominent recycling technol. Electrostatic removal of tea stalks and foreign objects from products in the food industry are also discussed. Li, J. Application of corona discharge and electrostatic force to separate metals and nonmetals from crushed particles of waste printed circuit boards.

Elsevier B. The purity of precious metals in PCBs is more than 10 times that of content-rich minerals. Therefore, the recycling of PCBs is an important subject, not only from the viewpoint of waste treatment, but also with respect to the recovery of valuable materials. A new process was investigated which involved mech. The results show that 1 a two-step crushing process could completely strip metals from base plates; 2 the effect of aggregation opposed the prodn.

Chinese Patent Recycling of thermosetting plastics waste from electronic component productions processed. In Recycling of printed wiring boards with mounted electronic parts. Recycling of epoxy resin compounds for molding electronic components. Recycling of the residue remaining from the molding of electronic components from epoxy resin compds. The molding resin powder cured epoxy resin powder showed good surface reactivity due to the functional groups present silanol, hydroxy and epoxy and it reacted with polar resins such as epoxy resin and phenol resin in a similar manner to silica powder.

Table of contents

Recycling a std. On the other hand, when a powder of low-stress-type molding resin contg. Using the molding resin powder as a filler for epoxy resin products such as insulating materials, paints and adhesives was successful. The strength, adhesive, and insulating properties of the resulting products were similar to those of products with conventional fillers.

Use of the powder as a decorating agent for an acrylic resin-type construction material produced a marble-like appearance and improved the surface hardness of the material. New solutions for reusing nonmetals reclaimed from waste printed circuit boards. Xu, Z. X, Cited By.

This article is cited by publications. DOI: Sun, H. Cao, Y. Xiao, J. Sietsma, W. Jin, H.

Separation Methods For Waste And Environmental Applications

Agterhuis, and Y. Zhi Sun, Y.


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Separation Methods for Waste and Environmental Applications Separation Methods for Waste and Environmental Applications
Separation Methods for Waste and Environmental Applications Separation Methods for Waste and Environmental Applications
Separation Methods for Waste and Environmental Applications Separation Methods for Waste and Environmental Applications
Separation Methods for Waste and Environmental Applications Separation Methods for Waste and Environmental Applications
Separation Methods for Waste and Environmental Applications Separation Methods for Waste and Environmental Applications
Separation Methods for Waste and Environmental Applications Separation Methods for Waste and Environmental Applications
Separation Methods for Waste and Environmental Applications Separation Methods for Waste and Environmental Applications
Separation Methods for Waste and Environmental Applications Separation Methods for Waste and Environmental Applications

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