Separation technology of heavy metals in aluminum scrap

[China Aluminum Network] Aluminum scrap contains heavy metals such as copper, these metals are seriously polluted by oil, etc. It is more difficult to separate nonferrous metals from waste aluminum by manual sorting. From the data reported at home and abroad, the research programs mainly include the following aspects:

(1) The heavy medium beneficiation method uses heavy medium re-selection to sort out non-ferrous metals such as copper with a density greater than that of aluminum. It utilizes the principle that the density of aluminum is smaller than that of other heavy non-ferrous metals and causes the aluminum to float on the medium. Heavy heavy metal sinks at the bottom to achieve separation. But the key to technology is to screen a medium that has a density greater than aluminum but less than copper. This medium is by no means water or other liquids, certainly a fluid. When working, the fluid is reciprocating and aluminum scrap is separated on the medium.

(2) The parabolic ore dressing method utilizes the principle that different objects with substantially the same volume are different when the same force is thrown, and can separate various waste non-ferrous metals with different densities in the waste aluminum. When objects of different densities and substantially the same volume are ejected along a straight line with the same force, various objects move in the direction of the parabola, and the fall point when landing is different. Simpler experiments can be carried out on a horizontal conveyor belt, when the mixed waste material on the conveyor belt runs at a high speed along the conveyor belt. When it is run to the end, the waste aluminum is thrown along the straight line, due to the different gravity of various wastes. Different points were dropped to achieve the purpose of sorting waste aluminum. This method can evenly separate waste aluminum, copper scrap, lead waste and other wastes. Equipment manufactured under this principle has been adopted abroad and is currently in the research stage in China.

U type Nail

U Nail also known as Turf Nail, general shape can be divided into: Square head Turf Nail, round head Turf Nail, G head turf nail, with a hat turf nail four; material is cold wire, galvanized wire, galvanized Steel Wire, stainless steel wire, etc. . Silk diameter from 14 #-4 # , width range 2cm-10cm, leg length range 5cm-50cm.

1"x 6"TURF NAIL is the most widely used, the main application of turf nail is fixed in the golf course, the garden lawn and other places need turf, also used in the fixed blanket, Straw mat, round pipe and so on. Easy operation, high quality and low price.

U-NAIL also known as sod nail, professional for artificial turf fixed, or building fixed. The general shape can be divided into: Round head U Nail, Square head U Nail, G type TURF nail.
Commonly used specifications of U-SHAPED Nails: Wire diameter: 8GA, 10Ga, 11Ga, 12Ga, length of one leg: 15CM, 20CM, inner diameter (distance between two legs) : 2.5 cm, 3CM, 3.5 cm surface treatment: wire color, zinc plating, plastic spraying, painting

Background: U Nail, general shape can be divided into: Square head nail, round head Nail, G head nail, with a cap nail four kinds. Materials are cold-drawn wire, galvanized wire, galvanized steel wire, stainless steel wire and so on. The U-NAIL is mainly used for fixing turf on golf course, Garden Lawn and other places where turf is needed. It is also used for fixing covers, mats, tubes, etc. . U-NAILS are often used in conjunction with cross-stapling. The existing Chinese patent with the reference announcement number CN202914478U discloses a composite u-shaped Nail, which comprises a first composite nail and a second composite nail. The first composite nail is provided with a locating block and a locating groove is arranged on the back of the locating block, the distance from the upper surface to the lower surface of the second composite nail is less than the depth of the positioning groove. The first composite nail and the second composite nail are used vertically and cross. In the process of using the above-mentioned composite u-shaped nails, the first composite nail and the second composite nail with different structures must be used together. The first composite nail and the second composite nail need to be kept separately and transported to avoid confusion, taking two first-group nails or two second-group nails can not achieve the effect of combined use and increase the use cost.

U type nails,U shaped turf nails,U type garden nails

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