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π SIMILAR VOLUMES
## 409 and machined products. Graphitic grains form centres from which rusting starts. Fractures rust more readily than the outer surface, and it is suggested that a coating of silicates in the case of cast iron, and films of scale in rolled material, act as a protecting layer. The rough surface o
Electric Smelting of Zinc-Lead Ores at Sarpsborg, Norway, and at Trollhattan, Sweden. J.C. 1V
Using a partial gasification coal gasifier for generation of high-temperature gasification gas for gas turbine and coupled with an ambient-pressure combustor for combustion of residual char from the aasifier to generate steam for driving steam turbine, the combined-cycle power generation apparatus c
An annular chamber provided with local ore feed and discharge as well as peripheral burners and a gas-transfer system is included in the rotaryhearth furnace for ore treatment. The CO-rich atmosphere from coal combustion is applied for the reduction of the ore and recirculated in the furnace for se