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Due to the large amount of waste stainless steel, stainless steel production is a very profitable business. Without stainless steel scrap, the world’s stainless steel production will stop. Hand-held X-ray fluorescence spectrometers can quickly gain return on investment. A waste sorter can process 100 tons of waste each month, and generally can make investment back within three months. The money comes from the following aspects:
There is a shortage of recycling. The person who spent the best price got the material (but must know what he bought)
Recovery upgrade. The steel mill pays the minimum deposit. If 304 is mixed in a pile of stainless steel waste, the Ni content of this waste is 8-12%. The waste needs to be divided into two piles, one containing 8-10% of Ni and the other containing 10-12% of Ni. The latter will pay a higher price when the amount of Ni is 10%. Certain impurity elements can cause sellers to be punished. These impurity elements can be detected using the XRF handheld fluorescence spectrometer.
The value of stainless steel mainly comes from this part of about 10% nickel content. Molybdenum content is more special value at 2%. Taking Ni content in 1% scrap stainless steel as an example, this is common for a waste dealer. In addition to stainless steel scrap residues for stainless steel production, there are Cr-iron scrap, nickel-iron scrap, carbon steel and low-alloy steel scrap, manganese iron scrap and nickel alloy scrap.
Elements that cannot be reduced during the metallurgical process are P, V, Cu, W, Nb, Co, Sn, Pb, and Ta. In addition, C and S cannot be reduced during casting, and all these elements need to be analyzed. Waste dealers mainly sort through the use of XRF handheld x-ray fluorescence analyzers and then re-sort at steel mills. In a typical situation, stainless steel manufacturers will use a hand-held x-ray fluorescence analyzer to do a rough classification, and then perform statistical analysis on each load sample and a large bench-top analyzer in the lab. For more information, please contact our experts for penalties. Exceeding the price of this scrap can reduce the amount of impurities in stainless steel scrap:
Elemental Detection Limit Element Detection Limit Element Detection Limit P0.04%W0.1%Sn0.03%
V0.2%Nb0.1%Pb0.002%
Cu0.5%Co0.5%Ta0.2%
Spectrometer application in stainless steel recycling
Stainless steel is widely used in many fields because of its good corrosion resistance. Although there are Ni elements in stainless steel, the elements that actually play corrosion resistance are Cr Cr, Mo Molybdenum, and sometimes Cu Cu. An important characteristic of stainless steel is its corrosion resistance and its ability to achieve mechanical properties up to 800 oc. Compared to this high temperature, low-alloy steel has lost good strength and corrosion resistance above 650 oc. For more details, please contact our experts based on the corrosion resistance and heat resistance characteristics of stainless steel. In the different processes of pressure vessels, the pipelines and turbines used in chemical industry, and the stainless steel in petrochemical industry, paper making, and power plants are all in heavy use. material. According to the characteristics of stainless steel can be divided into groups:
group
Grade
Main elements
characteristic
Martensitic stainless steel
400 series; 410, 420
12-18% Cr; <1% C
Excellent strength, magnetic, heat treatable
Ferritic stainless steel
400 series
12-18% Cr; <0.2% C
Magnetic, toughness, formability, cold work increase strength
Austenitic stainless steel
200 series; 300 series
17-25% Cr; 8-25% Ni
High strength, high toughness; non-magnetic, plasticity
Precipitation, quenching
17-4; 17-7, A286
17% Cr, Ni, Cu
Heat treatment for optimum performance
Double
2205, 2207
22% Cr, 5% Ni, Mo
Austenite + ferrite, high tensile strength, high strength, resistance to stress corrosion