When improving process management alone does little to help increase the plant’s efficiency, what is the next step? Implementing an upgrade project utilizing Metso VPA pressure filters at the Jianshan Filtration Plant made it clear that well-chosen equipment results in measurable outcomes.
Taiyuan Iron & Steel (Group) Co., Ltd (TISCO) is one of the world’s largest stainless steel producers. Located in the northern China city of Taiyuan, TISCO’s Jianshan Filtration Plant is part of Jianshan Iron Mine. The mine has an annual processing capacity of 10,400,000 tons, with an annual output of 3,880,000 tons of iron concentrate. The filtration plant produces dry iron concentrate through dewatering treatment from the slurry with density 65%, solid 4.96t/m3, viscosity 11.5-12 η/μ, pH value around 7.0 and 93.81% -200 mesh.
Identifying the barriers
“We had experienced unplanned shutdowns frequently before the transformation. Although we had been attempting to improve our management level, we were not seeing improvement in the productivity. We had a bottleneck in our productivity,” says Cui Hongjun, Director of Jianshan Filtration Plant, about the upgrade project.
Before 2013, the Jianshan Filtration Plant was equipped with three sets of US-made pressure filters and four sets of domestic filters, with an annual production capacity of 3,250,000 tons. In terms of energy consumption and production efficiency, this was not fully up to expectation.