3 CRUCIBLE ZINC VAPORIZER INDUSTRY LEADING FUEL EFFICIENCY AND ZnO YIELD

The furnace is designed to vaporize zinc for the purpose of producing zinc oxide by the French Process. The furnace heating system features highly energy efficient Regenerative Burner technology. The burner technology provides maximum operational efficiency and excellent pollution control to minimize CO2 and NOx. Safety systems are in accordance with EN 746.2 CSA 149.3, NFPA 84 and GOST Fuel Gas Safety Requirements. This system, in conjunction with the BURNS hood design, provides industry leading ZnO yield and an ability to fine control the ZnO surface area.

• High production capacity • High efficiency regenerative burner technology • Low fuel use / low carbon footprint design • Quick crucible replacement turn around • High efficiency ZnO collection system • Works best with low lead feed materials • Full automation package with system diagnostics, data-logging and troubleshooting assistance

FURNACE FEATURES

Production Max Production Rate ZnO 24.0 tonnes/day*

Nominal normal Production rate 20 tonnes/day** Operating temperature range 1,150oC – 1,375oC Maximum operating temperature 1,375o C Estimated fuel consumption 2.9-3.4 GJ/t ZnO at full production. Dimensions External Length 7.100 m External Width 2.500 m External Height 2.875 m Crucibles Number of Crucibles 3 Capacity 700 L each Refractories Nominal Cold Face Temperature 95oC Burner System Type Regenerative burners Nominal Burner Rating 1,200 kW Number of Burners 1 pair Fuel Natural gas**** Control Logic Siemens Simatic S7 1500 PLC Burner Management Standard EN 746.2 / GOST /NFPA 84/ CSA 149.3*** Services Estimated Electrical consumption 28.00 kWh/tonne Electrical supply Customer Specified

Compressed Air Pressure 10 bar

* Maximum allowable production rate with new crucibles and burners operating at an average 95% output

** Average production rate will be dependent on the crucibles selected for operation and operator practice

*** Identify which fuel safety Code is required prior to order, other code specifications available on request.

**** #2 light fuel oil available on request. Propane required for pilot burner.

3 - CRUCIBLE ZINC VAPORIZER FURNACE SPECIFICATIONS

A. H. Burns Energy Systems Ltd. 562 Main Street E., Hamilton. ON. Canada. L8M 1J2 Tel. (905) 525-6321 www.burnsenergy.ca