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Rapid analysis principle of carbon sulfur analysis instrument

Number of visits: Date:2010-7-11

With the speeding up of the pace of economic development, more and more strict to the requirement of product control in all walks of life, especially in the production of intermediates in the process of monitoring requirements also more and more high, this requires to form a complete set of monitoring instruments and monitoring means need to change accordingly.

Before the furnace carbon, sulfur, monitoring is very important for casting, smelting and other industries, the detection speed control in a few seconds, the faster the speed, the lower the production cost, the smaller the loss of furnace charge, easy to adjust ingredients before the furnace. Traditional tube furnace combustion method with heating time is long, consumables, shortcomings and so on in the middle is not easy to maintain, and high investment cost and high frequency furnace combustion method, both are not easily accepted by small and medium-sized enterprises. The following will introduce a kind of electric arc furnace combustion method for rapid detection of principles and methods of carbon and sulfur elements.

NDRL - 8 a1 type electric arc furnace has no need to heat up, ready to sample, convenient detection function at any time, without the use of high-value consumables, small energy consumption, economic and durable, simple maintenance, before the furnace control is small and medium enterprises the best choice of the elements of C, S. NDRL - 8 a1 type arc furnace supporting NQR - 4 type automatic carbon sulphur before furnace test analyzer can achieve automatic detection, fast detection speed, only 45 seconds, without human control titration, greatly reduce the human error, but also to the requirement of operating personnel before furnace decreases, don't need professional operation, simply furnace used on its own.

A, the determination of carbon (gas volumetric method)

In carbon steel mainly exists in the form of combining form, such as Fe3C, Mn3C, Cr3C2, etc; Mainly exist in the free carbon in iron, so attention should be paid to representative and uniformity when sampling.

Combustion CO2 + O2 = write C

Write 4 fe3c + 13 o2 = 4 co2 + 6 fe2o3

Mn3C + 3 o2 = write CO2 + Mn3O4

Write 4 cr3c2 o2 + 17 = 8 co2 + 6 cr2o3

Absorb CO2 + 2 koh = K2CO3 + H2O

 

Second, the determination of sulfur (iodine titration method)

Sulfur in steel mainly exists in the form of FeS, MnS, and segregation is serious, so when sampling

Pay attention to the representative.

Burning 4 fes o2 + 7 = 2 fe2o3 + 4 so2 write

3 MNS + o2 = Mn3O4 + o2 write 3

Absorbing SO2 + H2O = H2SO3

Ki titration KIO3 + 5 + 6 HCL = 3 i2 + KCL + 3 h2o

H2SO3 + I2 + H2O + 2 hi = - H2SO4

TypeInfo: Industrial News

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