ArcelorMittal Kryvyi Rih has installed new hydrocyclones produced by MULTOTEC (South Africa) in the process flow diagram of Section 13 of the Second Ore Processing Plant (ROF-2) of the Mining Department. The use of these hydrocyclones allowed the company to improve product quality by increasing the percentage of iron in the concentrate to 68% at one of the five operating sections. At the same time, due to the efficient operation of the new hydrocyclones in a closed cycle with regrind mills, the section's ore performance has not decreased. The company's costs for the implementation of this project amounted to about 9 million hryvnia.
Earlier, hydrocyclones of the GC-500 type (two batteries of 4 cyclones in each) operated at section 13 of ROF-2. This technological scheme ensured the production of a concentrate with a mass fraction of iron at the level of 65.3%. At the end of last year, this equipment was replaced with a modern and more efficient one. The industrial tests were carried out by the technical team of the mining department and MULTOTEC in a working factory. Based on their results, technological regulations were developed and approved.
One of the two hydrocyclone batteries consists of six units (5 in operation, 1 in reserve), the other of ten (8 in operation, 2 in reserve). Now 16 new hydrocyclones provide high-quality separation of product by size. This made it possible to achieve stable production of concentrate with a mass fraction of iron of at least 68%. Due to more efficient classification, the size of the final product has decreased from 95% to 100% with a particle size of less than 71 microns. In turn, due to the reduction in size, the opening of magnetite grains in the concentrate improved - this is a prerequisite for the stable production of high quality concentrate, which ArcelorMittal Kryvyi Rih currently supplies to Poland.
