New ore washing capabilities in India

A new iron ore washing plant installed for Monnet Ispat and Energy in Raigarh/India (MIEL) has resulted in significant efficiency gains as a result of effective removal of unwanted fines and slimes. The main problem was the high level of variation in the feed material as a result of it being sourced from a variety of mines rather than one consistent resource. It was the high fines content in particular that was causing most concern as this was resulting in a significantly reduced campaign life.


The new washing plant from CDE Asia effectively removes all of the low grade fines and slimes which results in a higher quality ore (Fig. 1 and Fig. 2). This not only increases efficiency in the kilns but has also delivered a washed ore product that MIEL are able to sell to export markets at a premium price. MIEL invested in the CDE washing plant after CDE Asia conducted extensive testing of the feed material to establish that quality improvements that it was possible to achieve. This testing was conducted at CDE Asia’s own testing facilities.


The new processing plant is making a 5 mm to 25 mm product for the DRI plant, a 2 mm to 5 mm product and a 75 µm to 2 mm product. Following the washing of the iron ore fines (Fig. 3) through the CDE EvoWash system waste water is delivered to an AquaCycle Thickener which ensures that approximately 90 % of the water used is recycled. This significantly reduces the volume of fresh water required to feed the washing plant and makes this sort of pro­cess possible where there are restrictions on water availability.


Prior to the introduction of the CDE washing plant the 5 mm product contained 7 % of 75 µm material which was the major cause of the inefficiencies being experienced by MIEL in their steel making processes. The new plant has reduced this to 1.5 % which has not only improved the Fe grade of the feed material (Fig. 4) and increased campaign life of kiln by 10 % and the yield by 2 % but has also resulted in improved metallisation.



Related articles:

Issue 2012-04

New mobile iron ore washing plant in India

A new mobile iron ore washing plant for Bhushan Power & Steel is delivering a substantial increase in Fe through the effective removal of alumina and silica from the feed material. Introduction of the...

Issue 2010-07-08

Investment in iron ore washing gathers pace in India

India is one of the giants of iron ore production, lying fourth in the global production league behind China, Australia and Brazil. Current production of iron ore in India is around 150 million metric...

Issue 2010-05

Manufactured sand as an alternative to river sands

Much of the sand supplied to the market in the Kaliyal region of India has traditionally been dredged from rivers. With growing pressure to reduce the environmental impact of such activities and ever...

Issue 2010-03

CDE Ireland Ltd

CDE Global, the Northern Irish manufacturers of washing equipment for the quarrying, mining and recycling industries will present at bauma 2010 the M2500, which is the first feeding and screening...

Issue 2012-07-08

Water recycling crucial for sand washing plant

A new sand washing plant from CDE Global has recently been installed in the Kingdom of Saudi Arabia for the Abdullah Abdein factories for cement production. The plant is located in Tabuk in North...