Purpose of the development: For hydraulic engineering by surface processing metallurgical slag, excluding sulfur transition in the aquatic environment.

Recommended application field: Areas of application of the new material for hydraulic engineering: - causeways; - seebank stabilization; - construction and repair of wharves; - dumping of artificial islands; - improvement of sediment quality.

Technical characteristic: 1. Stacking of processed blast furnace slag (0-400 mm) homogeneous in mechanical and filtration characteristics, heterogeneity may be due to uneven paving and compaction of the material. 2. The characteristics of the material (1 year after the laying of the dam) - dry density of 1.8 t / m3; - a particle density of 2.5-2.8 tons / m3; - porosity of 40-45%; - coefficient of filtration K f = 1.32 m / day .; - modulus E = 4000-9000 m / m2; - angle of internal friction C n / p = 41 ° / 39 °; - angle of internal cohesion C n / p = 2.75 t / m2 / 2.5 t / m2.

Advantages over analogues: The sulfur neutralizing problem is solved by treating the surface of the slag, whereby the content of sulfur in the slag surface 10-11 times reduced to 0.1%. The surface of the slag treatment not only eliminates water pollution, but also contributes to the improvement of its building properties, as it accelerates the process of hardening slag array.

The development stage readiness: The working documentation is developed

Technical and economic effect: Stabilization of the laid material is in 3 months, a grasp of the array - up to one year. The cost of one ton of processed slag is approximately 25-25 UAH. The minimum cost of one ton of natural gravel 50-60 UAH. During the processing of 0.5 million. t. Of slag per year and use it instead of gravel savings of 12.5 million. UAH. The expected payback period for equipment with its installation does not exceed 0.5 years.

Description of the development:
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Slag ferrous metallurgy plants are solidified molten oxides, has not recovered in the smelting furnace and passed into the metal in the production of iron and steel. For example, blast furnace slag (by-product of smelting iron in a blast furnace) is formed of the same oxide which comprises the majority of the rocks used in the construction. Building slag properties are well known. calcium silicates, are part of the slag are the foundation concrete. In the treatment of the slag with water astringent and hardens into a solid monolithic solid mass within one month. The major source of water pollution by immersing the slag in the water is sulfur, the content in the slag reaches 1.5-3.5%. Contamination caused by transfer of the surface in an aqueous solution of sulfur and hydrogen sulfide to form an acidic environment. The consequence is the death of living organisms and proliferation of anaerobic bacteria.

corresponds technical description
Conforms to technical characteristic

Possibility of transfer abroad:
Licence's sale
Technological document's sale
Creation of joint enterprise

Photo

Country Ukraine

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