Hydrogravity system and process for reclaiming and purifying a solid, multiple domain feedstock
a technology of gravity system and feedstock, applied in the field of gravity system and process for reclaiming and purifying a solid, multiple domain feedstock, can solve problems such as high temperatures, and achieve the effect of removing fines
Inactive Publication Date: 2005-08-11
BROADVIEW GROUP
View PDF13 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0005] Articles and products which serve as feedstock and contain multiple domains such as layers or regions of two or more different solid components are reclaimed by a binary hydrogravity separation. Initially, the feedstock is granulated to reduce the size of the multiple components into small particles of substantially a single component, optionally screened to remove oversize particles and fibers, and washed to remove dirt. Optionally, but desirably, fines are removed. The particles are then slurried in a liquid and fed through a dispersion mixer to a hydrogravity separation tank containing desirably a non-phosphorous aqueous solution, having a specific gravity which is interm
Problems solved by technology
This format requires high temperatures, and potential problems with solvent vapors, and the like.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0011] The system and process of the present invention for reclaiming individual thermoplastic components relate to a feedstock comprising solid, multiple domain or region components having different densities or specific gravities. One large class of components are various individual particles of plastics such as thermoplastic or thermoset polymers. The polymers can either be a homopolymer or a copolymer. While not desired, included within the plastic class are various melt blends of two or more compounds which contain multiple components on a molecular scale. Generally, feedstocks of the present invention contain less than about 10%, desirably less than about 5%, and preferably less than about 1% by weight of a melt blended material based upon the total weight of the feedstock. Non-plastic components include metals, inorganic fillers, various woods, paper, and the like. The multiple domain components are often in the form of layers, regions, areas, and the like.
[0012] Numerous fe...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Percent by mass | aaaaa | aaaaa |
| Weight | aaaaa | aaaaa |
| Flow rate | aaaaa | aaaaa |
Login to View More
Abstract
The hydrogravity separation of a multiple component solid feedstock comprises granulating the feedstock to produce particles substantially of individual components having different densities. A dispersion mixer having a high shear and / or turbulent zone is utilized to disperse agglomerated particles and a quiescent hydrogravity tank is utilized to effect binary separation of one or more of the heaviest or one or more of the lightest feedstock components by utilizing an aqueous solution having a specific gravity intermediate of the various components. A high degree of purity is obtained by feeding particles of a selected component to a plurality of sequential dispersion mixers and hydrogravity separation tanks. In a similar manner, remaining thermoplastic particle components can be selectively removed and purified.
Description
CROSS REFERENCE [0001] This application is a continuation-in-part of U.S. application Ser. No. 10 / 774,158 filed Feb. 6, 2004 for A HYDROGRAVITY SYSTEM AND PROCESS FOR RECLAIMING AND PURIFYING A SOLID, MULTIPLE DOMAIN FEEDSTOCK.FIELD OF THE INVENTION [0002] The present invention relates to reclaiming one or more selective, different density solid components, such as plastic (e.g. polyvinyl chloride, polyethylene), metal (e.g. copper, iron), etc., which initially can be physically bonded to each other, from a multiple domain solid feedstock. More specifically, the present invention relates to using binary hydrogravity separation of small sized particles of the solid multiple domain feedstock to selectively separate the particles into at least two different density components in a quiescent settling tank containing an aqueous solution having a specific gravity intermediate to one or more of the heaviest feedstock components or intermediate to one or more of the lightest thermoplastic f...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B03B5/28B03B5/44B03B9/06B29B17/02B29B17/04
CPCB03B5/28B29L2031/7544B03B9/061B29B17/02B29B17/04B29B17/0412B29B2017/0015B29B2017/0203B29B2017/0224B29B2017/0244B29K2023/06B29K2023/12B29K2027/06B29K2069/00B29K2075/00B29K2077/00B29K2105/065B29K2705/00B29K2705/02B29K2705/06B29K2705/08B29K2705/10B29K2705/12B29K2711/12B29K2711/14B29L2009/00B29L2031/10B29L2031/265B29L2031/3005B29L2031/302B29L2031/3044B29L2031/3055B29L2031/3462B29L2031/707B29L2031/712B29L2031/7322B03B5/442Y02W30/52Y02W30/62
Inventor BORK, JOSEPH E.PASPEK, STEPHEN C. JR.SCHROEDER, ALANENGEL, ULLRICH
Owner BROADVIEW GROUP