Benmarc’s BM515E has been developed and continues to be re formulated for better cost/performance over the past 35 years.
Benmarc’s BM515E is presently being used within the coal, iron ore, manganese, nickel, limestone and diamond mines as well as other mining operations.
Studies show that with water only, over 3% moisture addition is required to achieve 80% dust reduction. This equates to wasting a very valuable resource whose cost is increasing greatly, electrical consumption to run pumps also increasing at a rapid pace.
The chemical products supplied by Benmarc have been specifically designed for each application according to individual customer, is environmentally friendly, with components local to South Africa.
BM515E is Benmarc’s long term dust control agent, designed to have a residual effect of the treated material. BM515E combines the properties of BM210E with an added binding agent that essentially binds the dust particles to the larger lumps or rocks, keeps that bond for an extended period of time. BM515E application minimizes water (moisture addition) substantially. Requiring 0.5% water addition, per treated ton of material, dust emissions are reduced over 90% vs water addition of 3% per treated ton clearly reducing dust by 80%.
Primarily used for multiple transfer and stockpile emission control, including the stacking and reclaiming processes, the bond remains effective for up to 14 days. Other applications include:
- Stockpile feed conveyor. Point of application is last transfer point / tail end of the staking conveyor, NOT multiple application points, and NOT at the head end;
- Multiple transfer point emission control (with single point application). BM515E is applied at the discharge from a crusher / stockpile, where after multiple transfer points are encountered en-route to the next area of processing. Typically, the material is treated at the primary crusher discharge, covering the dust suppression requirements at that point, as well as subsequent transfer points over extended distances (in some cases in access of 5 km and 5 transfers from treatment point);
- Train load-out and treatment for long distance transport. This application aspect was originally targeted at reducing the emissions during the offloading process at Saldanha – 900km and several days after treatment at the mine, as well as suppressing at the source (during loading of the rail cars). Currently Saldanha receives Iron Ore and Manganese Ore from mines in the Northern Cape. None of the batches treated by Benmarc produces significant emissions during offloading, handling, and stockpiling at Saldanha, while material from other mine are reported to cause major process delays due to excessive dust emissions.