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 […]
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 […]
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＋ […]
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.
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.
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 […]
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 […]
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 […]
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 […]
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 […]