Technological Transformation for Spraying System of Evaporative Air Cooler

In the paper,the working principle,structure and the problems of evaporative air cooler,the cooling facility for closed-cycle water system of 6~# blast furnace in Baotou Steel in operation in winter are elaborated as well as the solutions are put forward. The loss of new water in production is reduced and the utilization rate of circulating water […]

Practice of Reducing Iron Content in Slag of No. 10 Blast Furnace of Xingang

The iron content is high in the slag of No.10 blast furnace of Xinyu Iron and Steel Group Co., Ltd. By adopting the measures of stabling furnace temperature and coke distribution angle, controlling slag alkalinity at 1.18 – 1.22, selecting gunpowder with better strength and scour resistance, keeping the depth of iron mouth at 2 […]

Effect of Calcium Chloride on Low Temperature Reduction Process of Iron Oxide Charge in Blast Furnace

The technology of spraying sinter with CaCl2can improve the RDI while impacts the metallurgy performance of other raw materials in blast furnace. In order to understand the influence of CaCl2on RDI and weight loss rate of iron ore during their low temperature reduction process,the sinter and pellet had been investigated. The results showed that RDI+ […]

AVAILABLE TECHNOLOGY FOR PROLONGING BLAST FURNACE LIFE

Maintenance countermeasures for defective copper stave of blast furnace were introduced, which include installing flexible pipe, cigar cooler, and replacing stave. Some operational technologies available for skull formation and new technologies of using titanium bearing material for prolonging hearth life were also presented.

Countermeasures to Improve the High Quality Rate of Liquid Iron of No.2 Blast Furnace

The countermeasures to improve the high quality rate of liquid iron of No.2 Blast Furnace Shop in respects of raw and fuel material management, operation system, front tapping management were summarized, and the maximum high quality rate of liquid iron could be 95.92% in 2014.

APPLICATION OF HIGH-EFFICIENT OPERATION TECHNIQUE OF HOT BLAST STOVE

With all- round analysis for the energy consumption of hot blast stove system,the main factors to affect energy utilization are found out and improved: compared pre- heating temperature and consumption of gas before and after using heat exchanger,optimizing burning furnace process,raising utilization rate of heat exchanger and prolonging its work life,reforming high- energy- consumption equipments,controlling […]

Treatment of Abnormal Flow Distribution of No. 2 1 880 m3 BF Gas in Laiwu Steel

In No.2 1 880 m3 blast furnace, improper mixing led to the weak of the center gas flow, so the gas flow distribution is abnormal and the pressure is rising. In this period, suspended materials and pipeline, furnace cooling and other serious accident did not happened by taking measures such as discharge load, control smelting […]

OPERATION PRACTICE TO LOWER CHARGE LEVEL IN MEDIUM MAINTENANCE OF 3200 m~3 BLAST FURNACE

It is concluded the measures in operation practice of lowering charge level in 3 200 m3 blast furnace4# of Tang Steel: adopting empty charge line to recover gas,determining charge level with multi ways,atomization pouring water,strictly controlling top temperature within 250 to 300,reasonably arranging slag tapping and blast furnace tapping. With reasonable control for various operation […]

Production Practice of 1050 m^3 Blast Furnace for a Long Period of Anterograde Time

Aaccording to according to the steel no. 6 blast furnace operating practice of nearly one year experience, in- troduced by strengthening raw material into the management, maintain reasonable operation of furnace type, formulate reasonable operation system, mainly including material system, air supply system, cooling system, thermal system and slag making system, perfect management measures, such […]

PRODUCTION PRACTICE TO CONTROL OUTPUT CAPACITY IN 2 500 m~3 BLAST FURNACE OF CHONG STEEL

Two 2 500 m~3 blast furnace of Chong Steel began to control output capacity in the middle ten days of Oct,2015,the daily output per blast furnace reduced from 5 500 to 4 000 ~ 4 500 tons. The production was further limited in the end of Jan,2016,the daily output to 3 000 ~ 3 300 […]