Purpose of the development: Equipment and technology designed to remove sulfur from the pig iron, which is an important requirement in the manufacture of steel. Particularly relevant desulphurization with a high content of sulfur in coking coal and consequently in coke and pig iron.

Technical characteristic: The degree of digestion reagent (Mg) - 95% and above. The temperature of cast iron - under the terms of the consumer. The initial content of sulfur in molten iron - according to the conditions of the consumer. The final sulfur content - the conditions according to the user, up to 0.001-0.002%. Specific consumption of granular magnesium (containing 91% metal) for reducing the sulfur content to 0.030% to 0.005% - about 0.30 kg / t hot iron. Mass flow Mg, kg / min Minimum - 6 Medium - 15, maximum - 20. Purge Time, min - about 5. Gas flow injection <60 m3/hr. The distance between the end of the lance and the bottom of the bucket - about 0.2 m The gas pressure in the feed bin filled with magnesium while blowing - 3.5 atm. Maximum gas consumption by injection of magnesium in the liquid metal - 160 m3/hr. Fuel gas injection lance immersed in the metal and blowing magnesium - about 0.2 m3 / ton of hot metal. Type of gas used for insufflation: - natural gas (possibly used as a carrier gas air, argon and nitrogen). The fall of temperature of the hot iron for the treatment bucket - about 5 degrees C Dietary Reference Intakes for the implementation of the process of cast iron in the ladle with granulated magnesium are (per tonne of hot iron) - Natural gas, m3 - 0.2 - Compressed air (or nitrogen), m3 - 0.01 - Electricity, kWh -0.2 - Nitrogen (or argon) m3 - 0.05 - Refractories, kg - 0.2 - Rolled steel and castings, 0.03 kg.

Advantages over analogues: In comparison to other technologies used in the world, the new technology provides:   - To guarantee the stability of the results achieved - 95% - High degree of absorption of magnesium - (95% and above) - The most Nazca reagent consumption - Reliability and stability of the results - Minor duration of the processing of iron - Possibility of filling bucket iron of more than 90% - The minimum losses of iron and iron lowest temperature drop in the bucket - The simplicity and durability of the equipment - Safety and absence of hazardous and toxic waste - The lowest consumption of materials of equipment Dopolnistelnoe advantage: if the client wishes of the design work and production of virtually all the equipment can be carried out by the enterprise customer.

The development stage readiness: Ready for application

Description of the development:
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The process consists of treating the molten cast iron ladles reagent - particulate magnesium, which are introduced into the melt through the submerged tuyere in the carrier gas flow. Channel lance outlet has a special chamber in which a reagent is melted, vaporized and then introduced into the molten iron. Magnesium having a high affinity to sulfur dissolved in the iron is connected to it, forming sulfides. Due to the low density and vigorous bubbling baths by blowing sulfides magnesium quickly removed to the slag. Equipment for treating molten iron with magnesium granulate consists essentially of receptacles for its transportation, storage and unloading feed hopper, Position tuyere pipes, controls and control systems. To carry out the process of introducing the reagent unit is equipped with piping for compressed gas for pneumatic conveying reagent with standard valves and control equipment. work tasks and settings modes are set and controlled by the remote control unit. Execution of complex equipment for the processing of liquid iron in the ladle with granulated magnesium modular. The composition and design of complex opredeleyayutsya in consultation with the customer, taking into account operating conditions.

corresponds technical description
Ready for implementation

Possibility of transfer abroad:
Licence's sale
Technological document's sale
Combinated reduction to industrial level
Realization of finished commodity
Joint production, sale, exploitation

Photo

Country Ukraine

For additional information turn to:
E-mail: gal@uintei.kiev.ua