The regularities in the temperature change of cast iron by blast furnace outlet.

Questions of melting of iron ore and raw materials with receipt of cast iron and slag are considered in vitro. The chemical composition of cast iron of slag is studied in vitro. The viscosity of slag is researched. Object of research - titaniferous ores with various contents of titan dioxide. The technical and economic indicators of a blast furnace melting an agglomerate and pellets (a consumption of coke and productivity, a chemical composition of cast iron and slag) received from a concentrate of the Kachkanarsky deposit are calculated. The technique of scientific research is used [1].

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Jarosite wastes reduction through blast furnace sludges for cast iron production

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2019.102966 ◽

2019 ◽

Vol 7 (2) ◽

pp. 102966 ◽

Cited By ~ 3

Author(s):

D. Mombelli ◽

C. Mapelli ◽

S. Barella ◽

A. Gruttadauria ◽

E. Spada

Keyword(s):

Blast Furnace ◽

Cast Iron ◽

Iron Production

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Behavior of the Dynamic Modulus and Fatigue in Asphalt Mixtures with Blast Oxygen Furnace Slag and Blast Furnace Dust

Periodica Polytechnica Civil Engineering ◽

10.3311/ppci.17672 ◽

2021 ◽

Author(s):

Ricardo Ochoa ◽

Alfonso López ◽

Gloria Grimaldo

Keyword(s):

Blast Furnace ◽

Cast Iron ◽

Dynamic Modulus ◽

Fatigue Behavior ◽

Asphalt Mixtures ◽

Slight Reduction ◽

Fine Aggregate ◽

Iron Mineral ◽

Blast Furnace Dust ◽

Bof Slag

Slag from a Blast Oxygen Furnace (BOF) is produced during the transformation of cast iron, coming from the blast furnace, into steel during the integrated steelmaking process, just as blast furnace dust (BFD) is produced during the transformation of the iron mineral into cast iron. These residues have generated environmental problems due to the accumulation and inadequate disposal thereof. Consequently, this study aims to analyze the use and behavior of the dynamic modulus and the fatigue in asphalt mixtures with partial (50 %) and total (100 %) substitution of the coarse aggregate for BOF slag and the fine aggregate for BFD. The results are compared with the behavior of a mixture elaborated with conventional aggregates. To achieve this objective, the chemical and physical properties of BOF and BFD were determined along with the optimum asphalt cement content, determined using the Ramcodes methodology. Tests were carried out to evaluate the physical characteristics, the dynamic modulus, and the fatigue of each type of mixture. The results of this study demonstrate adequate fatigue behavior and a slight reduction in dynamic modulus in mixtures with BOF and BFD. This allows us to deduce that the use of these residues is feasible and thereby to contribute to sustainable development and the protection of the environment.

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Analysis of possible ways to reduce sulfur content in pig iron

Izvestiya Ferrous Metallurgy ◽

10.17073/0368-0797-2020-11-12-878-882 ◽

2021 ◽

Vol 63 (11-12) ◽

pp. 878-882

Author(s):

S. V. Myasoedov ◽

S. V. Filatov ◽

V. V. Panteleev ◽

V. S. Listopadov ◽

S. A. Zagainov

Keyword(s):

Blast Furnace ◽

Cast Iron ◽

Sulfur Content ◽

Sulfur Removal ◽

Slag Basicity ◽

Slag Viscosity ◽

Pig Iron ◽

Blast Furnace Smelting ◽

Coal Fuel ◽

Slag Yield

One of the ways to increase the energy efficiency and intensity of blast furnace smelting, especially when using pulverized coal fuel, is to increase the hot strength of coke. In the conditions of OJSC NLMK, an oil additive was introduced into the coal charge to improve the coke quality. At the same time, sulfur content in the coke increases, and, consequently, sulfur content in the cast iron increases as well. In this regard, the task of finding ways to improve the desulfurization of cast iron in blast furnace becomes urgent. The main factors determining the desulfurization of cast iron are slag basicity, content of MgO oxide in it, temperature of the smelting products, and the slag viscosity. The purpose of this work was to compare the efficiency of sulfur removal by increasing the slag basicity and MgO content. On the basis of wellknown equations, an algorithm was developed that allows the problem to be solved. It was established that an increase in MgO content in the slag promotes desulfurization of cast iron to a greater extent than a basicity increase. In addition, an increase in MgO content by 1 % is accompanied by an increase in slag yield by 3.0 – 3.5 kg/t of cast iron. At the same time, an increase in basicity by 0.01 leads to an increase in the slag yield by 4 – 5 kg/t of pig iron. Consequently, reducing the sulfur content in pig iron by increasing the slag basicity requires less heat. In terms of the specific consumption of coke, difference in heat demand is 0.4 – 0.5 kg/t of pig iron. It is shown that with an increase in MgO content in the slag, the slag viscosity at a temperature of 1450 °C increases to a lesser extent than with an increase in basicity.

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Cast-iron blast-furnace cooling plates with domestically-manufactured globular graphite

Metallurgist ◽

10.1007/s11015-008-9076-1 ◽

2008 ◽

Vol 52 (7-8) ◽

pp. 395-401

Author(s):

V. V. Andreev ◽

D. N. Koryazhenov ◽

L. V. Portnov ◽

V. I. Chichkov

Keyword(s):

Blast Furnace ◽

Cast Iron ◽

Globular Graphite ◽

Iron Blast Furnace

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Effect of the Fuel, Raw Materials, and Process Conditions on the Behavior of Temperature Change in a Blast-Furnace Lining

Metallurgist ◽

10.1007/s11015-015-0099-0 ◽

2015 ◽

Vol 59 (3-4) ◽

pp. 290-299 ◽

Cited By ~ 5

Author(s):

Yu. S. Semenov ◽

N. M. Mozharenko ◽

V. V. Gorupakha ◽

E. I. Shumel’chik ◽

A. V. Nasledov ◽

...

Keyword(s):

Blast Furnace ◽

Temperature Change ◽

Raw Materials ◽

Furnace Lining ◽

Process Conditions ◽

Blast Furnace Lining

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Methodical provisions on the distribution of total technological energy resources between separate types of outputs of multi-product manufacture

The Problems of General Energy ◽

10.15407/pge2020.04.058 ◽

2020 ◽

Vol 2020 (4) ◽

pp. 58-62

Author(s):

G.O. Kuts ◽

◽

O.I. Teslenko ◽

Keyword(s):

Blast Furnace ◽

Cast Iron ◽

Energy Consumption ◽

Coke Oven ◽

Coke Production ◽

Energy Resources ◽

Coke Oven Gas ◽

Furnace Production ◽

Blast Furnace Production ◽

Product Manufacture

The question of methodical approach to the distribution of total technological energy consumption between separate kinds of outputs of multi-product manufacture is considered. Such ferrous metallurgy industries include blast furnace process, oxygen, energy, and coke production. The theoretical basis of proposed methodological provisions is Hess's law on thermochemical reactions and its consequences. For manufactures where the products correspond to the types of energy resources and have calorific value, the distribution of energy consumption is carried out according to the weighty volumes of types of products and their heat of combustion (for example, coke production). For industries that have multi-product manufacture of non-combustible products, the distribution of energy consumption between products is based on the weighty volumes of products and their heat capacity (for example, blast furnace iron production). In accordance with the proposed methodological provisions, we present calculation formulas for determining the distribution of total technological energy consumption for separate types of coke and blast furnace production. The results calculations of energy consumption are presented separately for coke, coke-oven gas, and chemical products of coke manufacture as well as for cast iron and furnace slag for blast furnace production. Calculations show a significant reduction of the energy consumption of coke, with regard for the distribution of energy consumption for individual outputs of coke production (by 27.2%) and pig iron in blast furnace production (a decrease in 31.8%.). The proposed methodological provisions for the distribution of total technological energy consumption between separate types of outputs of multi-product industries can be used in such manufactures of oil refining and chemical industry, in the processing industry, in particular, in the production of dairy products, etc. Keywords: energy consumption, multi-product manufacture, coke, coke-oven gas, cast iron, slag, heat of combustion

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