How many types of scrap steel and scrap iron are there? After reading this article, it will be clear!

- Nov 09, 2018 -

1. Carbon scrap

The thickness of the sheet is more than 2mm, the diameter of the wire is more than 4mm, and the single weight is more than 0.25kg of various carbon scrap. These include waste secondary steel, corner residual materials, steel products, steel castings, used machine parts, steel agricultural tools, etc., and alloy scraps must not be mixed.

2. alloy scrap

The specifications are the same as carbon scrap, including various alloy steel scraps, mechanical parts, alloy steel castings, etc. Alloy steels must be separated by various steel grades and must not be mixed with carbon scrap.

3. light and thin materials

Thin-plate scraps with a thickness of 2 mm or less, silicon steel sheets, iron drums, packaging iron sheets, automobile cabs, and scrap steel wires, iron wires, wire ropes, etc. having a diameter of 4 mm or less. The yield of tons is below 60%. The production of converter steel refuses to be eaten. It is generally similar to light and thin materials, packing, briquetting, etc., and is used for the production of furnace steel, but the production of converter steel should be determined according to the resources.

4. steel shavings

Do not mix iron filings, no impurities, no oxide blocks, no non-ferrous metals, separate long and short chips, and separate carbon steel scraps from alloy steel scraps.

5. waste gray iron

Waste gray iron castings, machine bed, low pressure valves, steel ingot molds, sand boxes, radiators, etc., regardless of size.

6. waste white iron

Waste white iron castings such as iron pans and ploughshare steel mills, regardless of size.

7. recycled iron (commonly known as earth iron)

The strip-shaped pig iron smelted by high-sulfur iron and soil blast furnace, including soil steel ingots and iron slag, is not divided into large and small blocks.

8. fire iron

After a long period of fire, the surface is oxidized and deteriorated in cast iron, such as stoves, furnace bars, smelting tanks, etc.

9. forgeable iron (Ma Steel)

Various pipe joints, wrenches, automotive rear axles, and mechanically forged castings.

10. raw iron filings

Do not mix steel scraps, non-ferrous metals and other impurities, and do not oxidize and agglomerate.

11. iron oxide skin

In the process of rolling steel in rolling mills and steel scales that steel mills fall off when cleaning steel ingots, the iron content is more than 60%, no impurities, no agglomeration, no non-ferrous metals.

12. iron mud

The dust from the oxygen top-blown converter of the steel making plant and the iron mud milled by the grinding plant contain about 55% iron.

13. steel slag

The steel content is required to be more than 60%, and the size is not divided.

14. primary pressure block

The density is greater than 1.5t/m3.

15. two-stage briquetting

The density is greater than 1 t/m3.

16. a primary iron filing block

The density is greater than 3t/m3.

17.secondary iron filings

The density is greater than 2t/m3.

18. the first hot block

The density is greater than 2t/m3, and the briquettes are not more than 5%.

19. two-stage hot pressing block

The density is greater than 1.5t/m3, and the briquettes are not more than 1%-15%.

20. light material hand bundle

Tightening, loading and unloading vehicles are not loose, not scattered, and the size of the bundle can be easily filled into the beach.

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