Researchers of the Mathematics Department of Kim Il Sung University developed a system of measuring slag level in the oxygen blast furnace.
“A layer of slag is generally formed as molten iron boils during the melting process. To maintain its thickness is very important in ensuring the stability of the furnace and putting production on a normal track,” said Ri Kwang Il, director of the information mathematics institute.
Many scientists had attempted to solve the problem in the past, but in vain.
It has been regarded as the Gordian knot for a long time.
Scientists of the institute buckled down to the research to put slag level measurement in an oxygen blast furnace on a scientific basis at the Hwanghae Iron and Steel Complex.
“At first, we tried to apply a monitoring camera for the measurement, but it was impossible to ensure its accuracy due to the unstable furnace conditions and flames. At that time, a veteran skilled worker told us that the vibration noise from the furnace keeps changing according to melting process,” said section chief Jo Chol Man.
Finding a clue from the information, they carried on in-depth research and scientifically corroborated that the vibration property of the furnace is related to the thickness of slag layer.
On the basis of that, they developed a vibration sensor, control program and a comprehensive system of communications and analysis.
In particular, they designed a device circuit afresh and made a sensor at the lowest cost possible before developing a real-time level measurement program which efficiently blocks out various kinds of noises in the melting workshop including the one that is produced when steam is discharged and which recognizes the vibration noise of the furnace alone.
They also confirmed a rational location of the sensor through dozens of experiments and perfected the standard operating method of the measuring system.
Last December, they applied the slag level measurement system to the oxygen blast furnace at the Hwanghae Iron and Steel Complex.
It has made it possible to ensure the normal operation of the furnace and turn out quality pig iron while increasing the amount of tapping per charge.
It was later introduced into the Kim Chaek Iron and Steel Complex.
More From Pyongyang Times
The Chinese permanent representative to the United Nations called for a permanent ceasefire in the Gaza Strip in an open meeting
July 04, 2025
The Chinese permanent representative to the United Nations called for a permanent ceasefire in the Gaza Strip in an open meeting
Lots of officials and educators visiting Moranbong Middle School No. 1, which was nominated as one of top ten informatization
July 04, 2025
Lots of officials and educators visiting Moranbong Middle School No. 1, which was nominated as one of top ten informatization
The Wonsan Kalma Coastal Tourist Area in the DPRK is overflowing with great joy and optimism of the people enjoying to the full
July 04, 2025
The Wonsan Kalma Coastal Tourist Area in the DPRK is overflowing with great joy and optimism of the people enjoying to the full
Russian President Vladimir Putin put forward the tasks facing the shipbuilding sector on June 29. The primary task to be tackled
July 04, 2025
Russian President Vladimir Putin put forward the tasks facing the shipbuilding sector on June 29. The primary task to be tackled
The regional-industry factories in 20 cities and counties and the Sinpho City Offshore Farm newly built last year introduced the
July 04, 2025
The regional-industry factories in 20 cities and counties and the Sinpho City Offshore Farm newly built last year introduced the
The delegation of the Ministry of Culture of the Russian Federation headed by Minister Olga Lyubimova returned home on July 1
July 03, 2025
The delegation of the Ministry of Culture of the Russian Federation headed by Minister Olga Lyubimova returned home on July 1
Russian President Vladimir Putin took part in opening ceremonies of youth centres newly built in six regions of Russia through
July 03, 2025
Russian President Vladimir Putin took part in opening ceremonies of youth centres newly built in six regions of Russia through
Agricultural workers in all parts of the country, who are eager to greet the Ninth Congress of the Workers’ Party of Korea with
July 03, 2025
Agricultural workers in all parts of the country, who are eager to greet the Ninth Congress of the Workers’ Party of Korea with
July 3 is the national day of the Republic of Belarus. The name Belarus is derived from the fact that its people’s skin is white
July 03, 2025
July 3 is the national day of the Republic of Belarus. The name Belarus is derived from the fact that its people’s skin is white
In the policy speech he made at the Fifth Session of the 14th Supreme People’s Assembly, the respected Comrade Kim Jong Un
July 03, 2025
In the policy speech he made at the Fifth Session of the 14th Supreme People’s Assembly, the respected Comrade Kim Jong Un
The Central Committee of the Workers' Party of Korea sent a flower basket to the Central Committee of the Communist Party of China
July 03, 2025
The Central Committee of the Workers' Party of Korea sent a flower basket to the Central Committee of the Communist Party of China
A delegation of Kim Il Sung Military University left Pyongyang on June 30 to visit the Military Academy of the General Staff of
July 02, 2025
A delegation of Kim Il Sung Military University left Pyongyang on June 30 to visit the Military Academy of the General Staff of
The delegation of the Ministry of Culture of the Russian Federation led by Minister Olga Lyubimova visited the Juche-oriented
July 02, 2025
The delegation of the Ministry of Culture of the Russian Federation led by Minister Olga Lyubimova visited the Juche-oriented
Good crops of wheat and barley are being expected on farms across the country which are being transformed splendidly as the days
July 02, 2025
Good crops of wheat and barley are being expected on farms across the country which are being transformed splendidly as the days
Talks were held between Sung Jong Gyu, minister of Culture of the Democratic People's Republic of Korea, and Olga Lyubimova,
July 01, 2025
Talks were held between Sung Jong Gyu, minister of Culture of the Democratic People's Republic of Korea, and Olga Lyubimova,
The West Pyongyang Locomotive Corps of the Pyongyang Railway Bureau carried out its first half-yearly plan for freight transport.
July 01, 2025
The West Pyongyang Locomotive Corps of the Pyongyang Railway Bureau carried out its first half-yearly plan for freight transport.
New posters have been created to dynamically arouse all the people across the DPRK to attain the grand goals for 2025 set forth by
July 01, 2025
New posters have been created to dynamically arouse all the people across the DPRK to attain the grand goals for 2025 set forth by
Russian President Vladimir Putin condemned the West’s attempted robbery at the Eurasian economic forum on June 26. The Western
July 01, 2025
Russian President Vladimir Putin condemned the West’s attempted robbery at the Eurasian economic forum on June 26. The Western
The delegation of the Ministry of Culture of the Russian Federation led by Minister Olga Lyubimova on a visit to the DPRK laid a
July 01, 2025
The delegation of the Ministry of Culture of the Russian Federation led by Minister Olga Lyubimova on a visit to the DPRK laid a
Orphans are cheerfully growing up to be pillars of the country without knowing the sadness of having lost parents at the Pyongyang
July 01, 2025
Orphans are cheerfully growing up to be pillars of the country without knowing the sadness of having lost parents at the Pyongyang
More Articles
