The national standard GB/T30163-2013 "Technical Specifications for High Temperature Air-Fired Hot Air Stoves for Blast Furnaces" was formally published. This standard was proposed by China Iron and Steel Industry Association, drafted by Shougang Corporation, Shandong Huimin Science and Technology Development Co., Ltd., and the Institute of Metallurgical Information Standardization. It was approved by the General Administration of Quality Supervision, Inspection and Quarantine and the Chinese National Standardization Administration on December 31, 2013. The release will be formally implemented on June 15, 2014.

According to experts, the standard was formulated to achieve energy-saving and emission reduction in the metallurgical industry, to fully recycle low-calorific-value blast furnace gas and the heat of the hot blast stove itself, to reduce the blast furnace gas emission rate and to increase the thermal efficiency of the hot blast stove, and to reduce the energy consumption of the ironmaking process. At the same time, it is necessary to standardize the energy-saving measures and expected values ​​that should be achieved for high-temperature top-fired hot blast stoves for blast furnaces. The issuance and implementation of this standard is of great significance for efficient energy-saving of iron-smelting, and accelerates the popularization and application of energy-saving technologies related to high-radiation cladding.

It is understood that the standard defines the high-emission cladding technology, and puts forward clear requirements for its application in the blast furnace hot blast stove. The standard proposes that the high-emissive coating is applied on the surface of the regenerator and coated with a material having a higher emissivity than the emissivity of the substrate; in order to achieve a high temperature of the air, the surface of the regenerator and the dome should be coated with a high-emissive coating. Recommended high temperature radiation grille checker bricks should also use high radiation coating material.

The high-emission cladding technology is a new energy-saving technology invented by Shandong Huimin Science and Technology Development Co., Ltd. and is mainly applied to blast furnace hot blast stoves, coke ovens and other industrial furnaces. Based on the physical characteristics of high emissivity materials and the working principle of ironmaking hot blast stoves, the high emissivity materials with high absorption and high radiation characteristics are applied to the surfaces of the regenerators and combustion chambers of hot blast furnaces and coke ovens. Radiation heat transfer, improve heat exchange efficiency. The research and application of high-emissivity coating technology has been recognized and supported at the national level. The application of the technology in blast furnace stoves and coke ovens was listed in the National Twelfth Five-Year Plan for Scientific and Technological Support Projects. It received central budgetary financial support for industrial restructuring in 2013 and was included in the national sixth batch by the National Development and Reform Commission. Key energy-saving technologies.

In the 10 years since the advent of high-emission cladding technology, it has been applied to more than 360 hot-air furnaces and coke ovens at more than 60 steel companies at home and abroad by the end of 2013, accumulatively achieving 1,472,700 tons of coke savings, saving 4.602 billion yuan, and reducing carbon dioxide emissions. Emissions of 3.535 million tons, significant energy savings. At present, there are more than 1,400 blast furnaces, more than 4,000 hot blast stoves and about 3,000 coke ovens in the country. It is estimated that in 2015, the technology will be promoted to 20% on domestic blast furnace hot blast stoves, and 5 billion cubic meters of blast furnace gas will be saved each year; the promotion will reach 5% in coke ovens, which can save about 100 million cubic meters of coke oven gas Meter. The high-emission cladding technology will form an annual energy saving capacity of 650,000 tons of standard coal for the iron and steel metallurgy industry and reduce carbon emissions by 1.43 million tons.

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