Tianjin waste stainless steel recycling waste stainless steel how to recycle？

Tianjin waste stainless steel recyclingHow to recycle the waste stainless steel？

Stainless steel scrap is a common material for waste recycling, such as balcony guardrail, stair handrail, metal tableware, many of which are stainless steel。

1, waste stainless steel refurbishment

At present, there are many enterprises engaged in the renovation of waste stainless steel in China, and the technology and equipment are constantly updated。However, there are still a large number of wastes generated during the main cleaning, paint removal and repainting process, which also need professional treatment, otherwise it will pollute the environment。

2, stamping and pressing

Some companies use stamping and other methods to press into other products。In the recycling process, such as scrap sheets, it is still necessary to clean and remove paint。

3. Melt and reuse

This is the main treatment method for stainless steel recycling。After repeated recycling, the metal itself does not lose strength。But recycling tinplate and galvanized drums can be problematic。Therefore, only a small amount of tinplate and galvanized drums are directly used for recycling in the furnace。

4, non-oxidation method

Non-oxidation process is a kind of smelting method without oxidation stage and only from melting period, reduction period to the whole process of steel production。Its main feature is that there is no oxidation stage, generally no oxygen supply, so it cannot be dephosphorized。When charging, the distribution of the elements is below or slightly below the lower limit of the specification。After the charge is completely melted, as long as the temperature requirements are met, it can be reduced and the composition of the steel can be adjusted。

5. Oxidation method

Oxidation smelting is characterized by the oxidation stage。During the smelting process, the oxidizing agent is used to oxidize Si, mn1775p and other superstandard elements and other impurities in the molten steel。Therefore, this method is widely used because it can smelt high-quality steel even if coarse materials are used。The disadvantage is that the smelting time is long and the easily oxidized elements are burned。

6, blow back oxygen method

Back blowing oxygen method is referred to as back blowing method, expressed by the word "back"。This method mainly uses the returned scrap steel, and carries out a small amount of oxidation boiling with oxygen during the smelting process, which not only helps to recover valuable alloying elements, but also reduces the content of impurities such as hydrogen and nitrogen in the steel。Therefore, this method is mainly used for smelting chrome-nickel tungsten or chrome-nickel stainless steel and other grades。