Roasting of high-sulfur ores results in large particles
Thread Content
Iron powder is produced by roasting high-sulfur ores containing 46%-47% sulfur, with the iron content in the roasted ore being around 60%. The contents of copper, lead, and zinc in the raw ore are around 0.1%, 0.2%, and 0.3% respectively; however, a large number of coarse particles are generated, some of which have a diameter of over 1 cm. This results in an abundance of cold ash, posing significant challenges for the control of the bubbling furnace. This is particularly evident when high-sulfur ore produced by Laizhou Hongcheng is used. Boiler temperature: around 850. Please help analyze the reason!
I have no experience with this process, so I can’t analyze it
We are a filtration manufacturer; if you’re interested, we can discuss it further
It is estimated that the bottom pressure control is set too high, resulting in too much slag.
The issue of cold ash forming in the sulfuric acid production furnace using pyrite is due to a mismatch between the raw materials and the gas flow rate. When it’s not possible to change the gas flow rate or volume, it’s necessary to adjust the raw materials; increasing the pressure in the fixed layer (or rather, the pressure at the bottom of the furnace) can help eliminate cold ash. When cold ash appears, one needs to have sufficient theoretical knowledge and experience to deal with it
The gas velocity in the boiling layer is too high; it is necessary to calculate the furnace area and the operating gas velocity
The same issue has occurred with the furnaces used by Zhaoye before; it almost caused the furnace to fail. How do you remove slag now?
All bottom flow slag is discharged! Worker Wang, you really know how to join in the fun!
Although your furnace temperature is only 850 degrees, it’s very likely that high temperatures in certain areas cause melting and subsequent solidification into small clumps, resulting in the formation of particles; such furnaces are prone to developing scars. The ore blending for furnaces handling high sulfur and high iron content is very important.