03% with extra low inclusion, beneficiated material feeding, strengthen management, careful operation and secondary steel-making measures are adopted.

The blast furnace keeps the preferable and safe production state by strengthening equipment look-over and maintenance,adjusting operation system,improving coal gas flow distribution,stabilizing BF running,perfecting protection of BF with limonite in the burden,giving attention to management of casthouse and adopting beneficiated material etc.

Through strengthening the ore and fuel quality management, raising the beneficiated burden material level, optimizing the charging structure and improving the operation system of blast furnace, the coal injection rate reached 153 kg/t, the coke rate 388 kg/t in 2007 and the coke rate was decreased obviously than that of 2006.

Concentrate 2~#1000m~3 Laisteel blast furnace technology through beneficiated burden material and reasonable operating system to enhance coal testing,made the achieve results of coal rate 175kg/t and beneficiated burden material ratio 506kg/t.

Benefit Comparison of Mixed Forage Fodder and Concentrate in Goose-raising;

On the basis of analysis to the iron-making production in 1999 in the main businesses in Hebei Province and the concrete technical progresses in some plants, it is concluded that the main technical progress in iron-making technology in 1999 in Hebei is the usage of following techniques: concentrate, B.

Some key innovations taken in recent years, to improve ecnomical and technological indexes on 300 m3 BF around optimization of blast furnace charge composition use introduced, such as use of concentrate process intensification etc.

Since 1998, through the optimization of burden structure and improvement of fine materials level in iron making system of Jigang, lots of work have been done around the energy saving and consumption decreasing, integral optimization and tapping the latent power of system, decreasing the cost and increasing the economic effect of enterprise and the market competitive power.

Since 1996, Taigang company have been enforcing the fine materials work, enlarging investment on new iron making technology, improving equipment level of blast furnace, training the workers and improving their operation level.

Coal rate can be raised by using high quality burden,raising blast temperature,using oxygen combined with coal injection,strengthening blast furnace operation and improving pulverized coal combustion conditions.

The importance and necessity of BF using high quality burden and resonable charge composition on decreasing cast of iron and steel products were discussed in this paper.

The relationship between high quality burden and blast furnace ironmaking cost is very close and complex.

Prediction of meat and bone meal contents in concentrate supplement by near infrared reflectance spectroscopy;