A new reheating furnace for the high-strength optimum bar and wire-rod rolling line at Sanbao Special Steel in Fujian Province has now been dried off.

It is CISDI’s second reference for Sanbao. It previously built the reheating furnace for the company’s 1,500mm hot strip rolling line.

A number of CISDI’s green, intelligent reheating technologies have been applied:

1) BFG-air dual-regenerative combustion: preheating the air and gas to above 1,000 deg.C results in a high excess heat recovery rate, saves fuel consumption and reduces energy consumption.

2) Ultra-low NOx energy-efficient burner: substantially controls the NOx content in reheating furnace fume, in accordance with the national ULE standard.

3) Residual oxygen online monitor: enables intelligent air-gas proportioning and greatly improves labour productivity.

Sanbao’s furnace will feed reheated billets for both bar and wire-rod rolling processes, which is designed to produce 1.39 million tonnes of quality bars and rods a year.

CISDI are supplying a high-rigidity short-stress path rolling mill, standardised flying shear, super-heavy modular mill and innovative controlled cooler for this line. Installation is almost complete and preparations are being made for their commissioning.