“We must become patriots before scientists.”
This is the watchword of Jong Chol (pictured), director of the Central Mining Research Institute under the State Academy of Sciences, who was chosen as one of the top scientists of 2019.
He played a leading role in turning dressing plant No. 3 of the Komdok Mining Complex into an energy-, labour- and land-saving one by establishing a lead and zinc ore-dressing process based on air mechanical flotation machines.
Unlike the mechanical flotation machine which has been subject to restriction in making equipment large, the air mechanical flotation machine can be made large in different sizes.
According to Jong Chol, an important thing here is to decide the size of air mechanical flotation machine and frame the flotation process.
Jong Chol and his research team installed two types of air mechanical flotation machines in consideration of existing production conditions, processing capacity, and installation of equipment and operating conditions of ore dressing plant No. 3.
They saved electricity and manpower by over 50 percent and lowered the consumption of reagents by 80 percent while increasing the actual extraction rate of ore dressing by more than 2 percent.
Majoring in mining machinery, Jong Chol presented several sci-tech achievements in the past.
He invented a coal truck wheel whose bearing housing is integrated with outer cover, contributing to raising the efficiency of coal transport, and paved the way for ensuring the domestic production of molybdenum disulphide powder.
He also developed a system that can promptly and accurately measure, analyse and display the particle size and distribution of different kinds of fine and ultrafine powder including mineral and nonmetallic materials.
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