+86 0371 8654 9132

heat of formation of blast furnace slag

Heat Of Formation Of Blast Furnace Slag

Iron and Steel Slag - Mineral Resources Program - USGS. silicate fluxes and the formation of steel slag. ... the slag is tapped during a heat, ... Blast furnace slag1 Steel Total iron Blast furnace slag1 Steel Total iron

More

Crystallization behavior of blast-furnace slag by single ...

2020-1-21  Blast-furnace slags are usually processed by either the wet or dry method. The wet method is based on water quenching; however, this method wastes water resources, produces harmful gases, and cannot use sensible heat [1,2,3,4].The heat value of slag (1500 °C) is 1600 MJ/t: the annual production capacity of 210 million tons of slag in 2016 was therefore equivalent to a waste of 11

More

Blast Furnace Slag - an overview ScienceDirect Topics

2017-10-18  Blast Furnace Slag. Blast furnace slag is used successfully in mud-to-cement conversion worldwide because of its economic, technical, and environmental advantages (Pessier et al., 1994). Slag-mix slurries were used as primary, temporary abandonment and sidetrack plug cements during prospect predrilling in the Gulf of Mexico.

More

Phase Composition and Formation Mechanism of Slag

a blast furnace body is one of the restrictive links of blast furnace longevity.4) In recent years, Chinese commercial blast furnaces have suffered a large amount of economic losses due to the damage of copper stave.5,6) The formation of slag crust on the cooling stave of a blast furnace plays

More

Mineral Reactions and Slag Formation During Reduction

2017-2-6  Mineral Reactions and Slag Formation During Reduction of ... 9.1 Formation of Potassium Slag in Olivine Fluxed Blast Furnace Pellets ... Steel using the gas flow, heat transfer and permeability components of BlueScope Steel's proprietary two-dimensional steady-state numerical model

More

Hydrothermal solidification of blast furnace slag by ...

2007-10-1  Blast furnace water-cooled slag (BFWS) has been solidified using a hydrothermal processing method, in which the BFWS could be solidified in an autoclave under saturated steam pressure (1.56 MPa) at 200 °C for 12 h by the additions of quartz or coal flyash. The tensile strength development was shown to depend on the formation of tobermorite and the packing state of the formed tobermorite in ...

More

Formation of C-S-H in calcium hydroxide–blast furnace

2021-9-25  Formation of C-S-H in calcium hydroxide–blast furnace ... The slag grain-size grinding and the heat treatment in saturated vapour ... Blast furnace slag with different specific surface partially replaced the lime. The compaction pressure of samples was 20 MPa. Hydrothermal synthesis was carried out under saturated

More

Investigation of Formation and Shedding Behavior of Slag ...

2021-4-5  Ma H, Jiao K, Zhang J et al (2020) Phase composition and formation mechanism of slag crust in blast furnace. ISIJ Int 60:2357–2365. CAS Article Google Scholar 12. Yeh C, Ho C, Yang R et al (2012) Conjugate heat transfer analysis of copper staves and sensor bars in a blast furnace

More

Improved Slag Formation in the Blast Furnace by Co ...

2017-2-6  Selection of basic slag formation injectant Possible fluxes to be injected into the blast furnace were considered to be burnt lime, burnt dolomite or BOF slag. Limestone or dolomite have a strong cooling effect on the raceway flame temperature, which would limit the injection rate of pulverized coal too much. The effect on tuyere slag formation

More

Activation of blast furnace slag by a new method ...

2009-8-1  Conclusions. Blast furnace slag is usually activated by mixing with Portland cement clinker. At very high pH values (> 13.0) corrosion of the slag particles is enhanced and the reaction of blast furnace slag is accelerated. Alternatively, the use of low pH values (11.8–12.4) was investigated in this study.

More

What is blast furnace slag? What are the sensible heat ...

2020-12-9  The sensible heat of blast furnace slag is one of the few important waste heat resources that has not yet been exploited. Blast furnace slag is a solid waste formed from gangue in ore, ash in fuel, and non-volatile components in solvent (usually limestone) in the process of blast furnace ironmaking.

More

Heat recovery in dry granulation of molten blast furnace slag

@article{osti_5610662, title = {Heat recovery in dry granulation of molten blast furnace slag}, author = {Tetsuro, N and Hiroshi, N and Koichi, F and Tsukio, I}, abstractNote = {In a research and development project undertaken jointly between Ishikawajima-Harima Heavy Industries Co. and Sumitomo Metal Industries, Ltd., a process has been developed for granulating molten slag discharged from ...

More

Thermodynamic Analysis of Blast Furnace Slag Waste Heat ...

The blast furnace (BF) slag waste heat was recovered by an integrated system stage by stage, which combined a physical and chemical method. The water and coal gasification reactions were used to ...

More

Estimation of Reaction Heat in Ti-Bearing Blast Furnace ...

2021-2-1  This paper reported the calculation of the reaction heat in titanium-bearing blast furnace slag (abbreviated as TBFS)-H 2 SO 4 system based on estimation of thermodynamic data of CaTiAl 2 O 6 by mechanical mixture model. The thermodynamic analysis indicated that CaTiAl 2 O 6 was more stable than the corresponding ternary oxides as CaOTiO 2, CaOAl 2 O 3, and Al 2 O 3 TiO 2.

More

Formation of C-S-H in calcium hydroxide–blast furnace

2021-10-25  Formation of C-S-H in calcium hydroxide–blast furnace ... The slag grain-size grinding and the heat treatment in saturated vapour ... Blast furnace slag with different specific surface partially replaced the lime. The compaction pressure of samples was 20 MPa. Hydrothermal synthesis was carried out under saturated

More

Structural aspects of blast furnace slag

2013-6-12  The blast furnace slag should be a free-flowing one at the operating temperatures to ensure efficient slag–metal separation. It must have appreciable affinity for the gangue constituents to facilitate the production of metal of choice. Yet from the available heat (in the hearth) point of view,1 the blast furnace slag should be neither very ...

More

Phase Composition and Formation Mechanism of Slag

a blast furnace body is one of the restrictive links of blast furnace longevity.4) In recent years, Chinese commercial blast furnaces have suffered a large amount of economic losses due to the damage of copper stave.5,6) The formation of slag crust on the cooling stave of a blast furnace plays

More

(PDF) Phase Composition and Formation Mechanism of

Previously, we analyzed the phase composition and formation mechanism of the slag crust of commercial blast furnaces (The volume is 2680m 3 ) equipped with copper staves in China, but we did not ...

More

Calorimetric Studies of Alkali-Activated Blast-Furnace ...

In addition, it is concluded that in the case of OPC cements, cumulative heat release is a criterion for the selection of effective curing parameters, while in the case of alkali-activated blast-furnace slag cements, a higher heat rate (which increases sharply with increasing temperature from 20 to 40 °C) is a criterion.

More

TPT: Dry Granulation of Blast Furnace Slag for Heat Recovery

Blast furnace slag is known as a by-product from the production of hot metal at integrated steel and iron mills. Approximately 300 kg of this liquid slag with a temperature of about 1500°C is tapped together with each ton hot metal. This results in a worldwide annual production of about 400 million tons of blast furnace slag.

More

What is blast furnace slag? What are the sensible heat ...

2020-12-9  The sensible heat of blast furnace slag is one of the few important waste heat resources that has not yet been exploited. Blast furnace slag is a solid waste formed from gangue in ore, ash in fuel, and non-volatile components in solvent (usually limestone) in the process of blast furnace ironmaking.

More

Thermodynamic Analysis of Blast Furnace Slag Waste Heat ...

The blast furnace (BF) slag waste heat was recovered by an integrated system stage by stage, which combined a physical and chemical method. The water and coal gasification reactions were used to ...

More

Heat recovery in dry granulation of molten blast furnace slag

@article{osti_5610662, title = {Heat recovery in dry granulation of molten blast furnace slag}, author = {Tetsuro, N and Hiroshi, N and Koichi, F and Tsukio, I}, abstractNote = {In a research and development project undertaken jointly between Ishikawajima-Harima Heavy Industries Co. and Sumitomo Metal Industries, Ltd., a process has been developed for granulating molten slag discharged from ...

More

(PDF) Phase Composition and Formation Mechanism of

Previously, we analyzed the phase composition and formation mechanism of the slag crust of commercial blast furnaces (The volume is 2680m 3 ) equipped with copper staves in China, but we did not ...

More

Phase Composition and Formation Mechanism of Slag

a blast furnace body is one of the restrictive links of blast furnace longevity.4) In recent years, Chinese commercial blast furnaces have suffered a large amount of economic losses due to the damage of copper stave.5,6) The formation of slag crust on the cooling stave of a blast furnace plays

More

TPT: Dry Granulation of Blast Furnace Slag for Heat Recovery

Blast furnace slag is known as a by-product from the production of hot metal at integrated steel and iron mills. Approximately 300 kg of this liquid slag with a temperature of about 1500°C is tapped together with each ton hot metal. This results in a worldwide annual production of about 400 million tons of blast furnace slag.

More

(PDF) THERMAL ENERGY MANAGEMENT OF BLAST

The main product of the blast furnace is molten pig iron and by products are slag and top gas. During the process of formation of molten metal, CaO is chemically reacted with SiO2 and from the slag, this slag is send to slag granulation plant. During the above

More

Hydration, Structure, and Properties of Blast Furnace Slag ...

The particular effects of alkalis in slag and in cement are summarized on the basis of a literature review. Activation by alkalis and thermal activation may be synergistic. Beneficial effects of cements with blast furnace slag on the chemical resistance of concrete are outlined with reference to a

More

A Study on Selected Hot-Metal and Slag Components for ...

2005-3-17  blast furnace (Figure 1) solid material, such as iron-bearing material, coke and fluxes, are charged at the top of the furnace. Preheated air with increased oxygen content and auxiliary reduction material (pulverized coal or oil) is blown into the lower part of the blast furnace, and liquid hot metal and slag are tapped at the bottom.

More

Protection of Blast Furnace Hearth Lining by the Addition ...

2013-6-9  Successful formation of the protection layer at the eroded regions of the hearth lining depends largely on the flow and the heat transfer of the HM and hence the furnace operating conditions. Further, the amount of the TiO2 containing material needed is to be enough to form the protection layer but at the same time is to be minmized as excess ...

More