A base component for reaction with a catalyst component comprises a paste of high alumina cement, water and a source of CaO and SiO2 - eg. preferably granulated blast furnace slag or alternatively PFA, silica fume, a pozzolan or diatomaceous earth.

The sulphur partition ratio between hot metal and high alumina blast furnace slag (> 18% alumina) has been examined on cast by cast basis for G blast furnace of Tata Steel. Equilibrium sulphur partition ratio was calculated from sulphide capacity with the help of oxygen activity in the melt.

High Alumina Castable. High alumina castable is also suitable for heating furnace, soaking pit, heat treatment furnace, rotary kiln and so on. Various kinds of high temperature burner nozzle working lining, heating furnace water pipe wrapping lining, steel liquid

RAW MATERIAL S USED IN BLAST FURNACE :- Iron ore, including Sinter, Pellet etc. Coking Coal or Readymade Coke Pulverized Coal / Tar etc. for tuner injection Limestone, Dolomite, Proximate etc. as flux Quartzite,Unite etc. to adjust alumina / silica ratio Iron Ore:- Iron content in earth's crust is about 4.5% and is the…

In the blast furnace burden 1% increase alumina content increases coke rate by 2.2%,decrease in the productivity by4% and an increase in flux consumption by 30Kg /t of hot metal production.The ...

Furnace Insulation Blanket is an excellent refractory insulation material for sale in Rongsheng Factory at cheap cost. Furnace insulation blanket is produced with quality special ceramic fiber raw material through our advance manufacturing process through firing and finally molding with white color and standard size, and also has various excellent properties of good thermal shock resistance ...

USRP offers a full line of high-alumina products used in the oxygen furnace area including speciality formulas used in desulfurization lances to high-impact formulas for ladle improvement. Our wear resistant products will also answer plant maintenance problems for gas collection and separator systems. BLAST FURNACE.

Decreasing the slag rate can lead to a lower fuel rate and higher productivity in the blast furnace (BF). Indian iron ore is known to have adverse alumina–silica ratio. Therefore, to reduce the slag rate there is a need to either remove alumina from the iron ore or to add more silica to dilute the effect of alumina in slag. The latter would increase the slag rate, while the other option is ...

Application. It is widely applied to laying of high-aluminum bricks of blast furnaces, hot air furnaces and other industrial kiln furnaces. It has been widely used in large- and medium-scale iron and steel enterprises. Physical and chemical indexes: Any change of …

Indian blast furnaces are running of high alumina slag due to high alumina to silica ratio in ores. slag mainly contains lime(CaO), silica (SiO 2),alumina(Al 2 O 3) and magnesia(MgO) along with smalleramount of FeO, MnO, TiO 2, K 2 O and S. The flow characteristics of the slag determine size, shape and area of the cohesive zone in the furnace.

The alumina content of corundum brick is more than 90% and the main crystal phase is corundum. It has high compressive strength at room temperature (up to 340MPa), high load softening start temperature (more than 1700℃), good chemical stability, and strong resistance to acidic or alkaline slag, metal and molten glass, etc. Resistance.

Refractories for Hot Blast Furnace Quality Refractory Supplier. 2020/06/03· Refractories for hot blast furnace are like silica brick, clay brick, high alumina brick, low creep high alumina brick, low creep clay brick, lightweight insulation bricks, heat insulation refractory …

Silica increases slag rate, coke rate, CO2 emission and hampers productivity of the blast furnace Silica (SiO 2) impacts operational stability/permeability, affecting sintering and blast furnace performance 20 Sinter plant Blast furnace Silica increases additives consumption, slag …

A tilt in the silica to alumina ratio in the global product mix can determine which impurity consumers are more sensitive towards by affecting the degree of flux addition required to maintain a consistent basicity ratio (CaO:SiO2) in the blast furnace. Too silica rich, and extra silica will require additional CaO flux to balance the basicity

For example, silica refractory mortar used in hot blast furnace should contain more than 94% of SiO2, 0.2MPa refractoriness under load (RUL) temperature should be higher than 1600℃. Silica refractory mortar used in glass kiln should contains 94~96% of SiO2, RUL temperature should between 1600~1620℃, while the SiO2 content for coke furnace ...

Alumina to silica ratio is as high as 1.5–3%. Adverse alumina to silica ratio is detrimental for the blast furnace. This should be less than 1.5 and preferably below 1. High alumina content in the blast furnace burden irrespective of its composition (Lumps, Sinter and Pellet) generates slag with higher viscosity.

Clay refractory mortar is mainly used in blast furnace, hot blast stove, coke oven, soaking furnace, heat equalizer, boiler, etc. 2.High Alumina Refractory Mortar. The main material is high alumina clinker, soft clay or chemical binder. The content of alumina is determined according to the composition of masonry and use requirement.

The components that deserve the primary attention are silica and alumina, both for their elevated content in the slag and for their economical value. Processes to recover silica (Haruna, 1988, Wang et al., 1995, Yoo et al., 2000) and both silica and alumina (Rousseaux et al., 1984) from blast furnace slag are reported in literature.

The iron ditch castable is a kind of refractory castable used in the tapping groove of the blast furnace tapping field. The fused corundum, silicon carbide and carbonaceous graphite are used as refractory raw materials, adding additives and binders, and mixing according to the formula ratio. Made of alumina silicon carbide carbon castable.

The Alumina - Silica (Al 2 O 3 - SiO 2) refractory oxides system has been the subject of several investigations in the past.Though many papers were presented on the melting relations and range of composition of mullite, it remained a matter of controversy about the diagram in the region of the compound mullite (3Al 2 O 3: 2SiO 2) as has been discussed by Aramaki and Roy [Journal of …

High alumina slag, with alumina normally more than 15 pct, is encountered with blast furnaces in China because of high alumina/silica ratio in …

High Alumina Slag and Blast Furnace Operation. satyendra; May 27, 2013; 2 Comments ; alumina, Basicity, magnesia, slag, Slag basicity, Slag drainage, Slag fluidity, viscosity,; High Alumina Slag and Blast Furnace Operation. Blast furnace (BF) process of ironmaking is a process where liquid iron (hot metal) and liquid slag are produced by the reduction of iron bearing materials …

High alumina in the iron ore raises the levels of alumina in blast furnace slag. To operate a blast furnace with high alumina slag is quite difficult and need a different type of skill from the blast furnace operators since with the increase in the Al2O3 content of the slag, the blast furnace operation has problems such as excess accumulation ...

For better blast furnace productivity and slag flowability it is desirable to have the alumina silica ratio at 1:1 in the blast furnace feed. The quality specifications attached to the iron ores by steel makers is contrary to what nature has provided. In other words, there exists a …

ground granulated blast furnace slag and ACI 233 (1995) provides an extensive review of slag. SILICA FUME Silica fume, also referred to as microsilica or condensed silica fume, is a byproduct material that is used as a poz-zolan (Fig. 3-7). This byproduct is a result of the reduction of high-purity quartz with coal in an electric arc furnace in

The components that deserve the primary attention are silica and alumina, both for their elevated content in the slag and for their economical value. Processes to recover silica (Haruna, 1988, Wang et al., 1995, Yoo et al., 2000) and both silica and alumina (Rousseaux et al., 1984) from blast furnace slag are reported in literature.

the alumina content of blast furnace slags at Jamshedpur over a period of 25 years2 is clearly the result of the increased alumina/silica ratio in the ore mix. The high values of the correlation co-efficients of the two regression lines drawn in the diagram prove that the relationships are quite significant. Effects of high- alumina contents

The latest fiber in the Nextel series from 3 M is the Nextel 720. 26 It contains the same alumina to silica ratio as in the Altex fiber, that is, around 85 wt% A1 2 O 3 and 15 wt% SiO 2.The fiber, shown in Fig. 33, has a circular cross-section and a diameter of 12 µm.The sol–gel route and higher processing temperatures have induced the growth of alumina-rich mullite and α-alumina.

In addition, they exhibit better volume stability and abrasion resistance. High-alumina bricks are used in blast furnaces, blast-furnace stoves, and liquid-steel ladles. Mullite. Mullite is an aluminosilicate compound with the specific formula 3Al 2 O 3 · 2SiO 3 and an alumina content of approximately 70

with Indian blast furnaces because of high alumina/silica ratio in iron ore as well as sinter and high ash content in coke. These slags are highly viscous. Thus, there is a wide scope for studying the physicochemical properties of high alumina slags so as to improve performance of the blast furnace in terms of slag volume and thereby, furnace

Indian blast furnaces are running of high alumina slag due to high alumina to silica ratio in ores. slag mainly contains lime(CaO), silica (SiO2),alumina(Al2O3) and magnesia(MgO) along with smalleramount of FeO, MnO, TiO2, K2O and S. The flow characteristics of the slag determine size, shape and area of the cohesive zone in the furnace. The cohesive zone in the furnace acts as a gas ...

slags are high alumina blast furnace slags. Alumina was varied between 18 and 30 %, MgO between 2 and 5 %, TiO 2 between 0 and 2 %, and CaO/SiO 2 between 0.56 and 1.45. The temperature range used in this investigation was between 1400 and 1600 °C. The present objective is to study the effect of optical basicity on the viscosity of