Effect of Blaine Number on the Physical and …

The optimum green pellet properties are obtained with iron ore fines with a Blaine number 1800 cm 2 /g using Cement as binder material. They show a high C.S. …

Effect of Blaine Number on the Physical and …

The Blaine number (cm2/g) of the fines is an essential parameter in defining the quality of the pellets. The Blaine number of the fines influences the overall reactivity, porosity, …

Experimental Investigation of Different Fineness …

The firing of pellets at 1350 °C provides enough strength (C.C.S.), as shown in Figure 3 C.C.S. of these pellets is a little lower, in value, than the pellets fired at 1250 °C, of both Iron Ore and 2 …

Analysis of iron ore pellets properties concerning raw …

The pellets were prepared by blending iron ore fines (64% Fe, 2.25% LOI, and Blaine number = 2975 cm 2 /g) and slimes (52.45% Fe, 5.60% LOI, and Blaine number = 7064 cm 2 /g) generated from the beneficiation plant. The utilization of slimes replaces the external binder addition during pellet making.

Effect of Blaine Number on the Physicalhanical …

to 1470 cm2/g, and then declines with an increase in Blaine number 1800 cm2/g. In pellets made with LSL and cement binders, the C.S. value constantly grows as the Blaine ... Keywords Iron ore ...

Preparation of Iron Ore Micro-pellets and Their Effect on …

2.1 Materials and Methods. Iron ore slimes from Bailadila-5 (India) mines were used for the present study. The specific surface area (also known as Blain number) of as received slime was 821 cm 2 /g. Initially, the slimes were subjected to beneficiation by gravity separation and magnetic separation, followed by wet grinding and filtration to …

Analysis of the Influence of Blaine Numbers and Firing …

The RSM-I-optimal predicted responses with a coefficient of determination (R2) of 0.89 for CCS and 0.91 for AP of iron ore pellets. Optimal conditions were Blaine no. = 1668 cm2/g, 1250 °C firing temperature, PPGD value 90 no/mm2, SPGD value 250 no/mm2, and HPGD value 490 no/mm2, with 4.5 KN CCS 27%.

What is the relation between blaine number and specific …

The blaine number of iron ore concentrate is important for pellet feed specification which is measured by air permeability apparatus and its unit is cm2/gr, while specific surface is measured by ...

(PDF) HPGR effect on the particle size and shape of iron ore pellet …

It is important to mention that iron ore fines, specifically the pellet feed (D 80 < 106 mm [20]), are the raw material for the production of iron ore pellets ("green balls"), whose particle ...

Effect of Blaine Number on the Physicalhanical …

The compressive strength (C.S.) value of pellets made with the BLS binder increases first with an increase in Blaine number from 900 to 1470 cm2/g, and then declines with an …

(PDF) Improving reducibility of iron ore pellets by …

The result shown that cold compression strength of the pellets containing from 1.06 to 18.45 mass% slag was higher values than 200 kg/p, hence, the pellet was able to charge the pellets into the ...

Introduction to Iron ore Pellets and Pelletizing processes

The typical properties of the iron ore pellets are given in Tab 1. Process technology. There are four stages involved in the production of iron ore pellets. These stages consist of (i) raw material preparation, (ii) formation of green balls or pellets, (iii) induration of the pellets, and (iv) cooling, storage and transport of pellets.

Modelling and estimating the Blaine number of iron …

Highlights. •. Proposing a novel strategy for modelling the Blaine number of iron ore concentrate. •. Modelling the Blaine number using Response surface method …

What's a Blaine number?

A Blaine number is the surface area-based parameter that is quantified with the use of the air permeability method. The technique is well-established in the cement industry. However, it has several widely recognized and important limitations. These include 2 types of cement of the same Blaine number exhibiting different characteristics in …

A Study on Removal of Clay Minerals from Barbil Region Iron …

It is considered as a challenging task for beneficiation industries to handle iron ore concentrate having high LOI and a high Blaine number for pelletization. High LOI hampers the pelletization in the induration stage due to the formation of cracks in the pellet by forming high-pressure steam.

Modelling and estimating the Blaine number of iron ore

The high-grade iron ore fines contain 64% Fe, 2.25% LOI, and Blaine number 2975 cm²/g, whereas iron ore slimes contain 52.45% Fe, 5.60% LOI, and Blaine number 7046 cm²/g. Pellets were produced ...

Effect of Blaine Fineness on the Quality of Hematite Iron Ore Pellets …

The results showed improved properties of iron ore pellets at an optimum Blaine number (2150 cm2/g) but, reduction degradation index was found to be very poor for the given ore. Further investigation showed that when MgO containing flux viz. pyroxenite was added, the reduction degradation index and swelling index of the pellets …

Iron ore pellets and fines

Our iron ore pellets and fines are made from magnetite and have high iron ore content – pellets at around 67 percent concentration and fines over 70 percent. This means they have lower impact on the environment than competing pellets and products such as sintered hematite fines. ... Number of quality parameters continuously measured in our ...

Optimization of FeO in iron ore pellet with varying blend of hematite

One such low-grade iron ore is Banded Hematite Quartzite (BHQ) ore with iron content ranging between 30% and 38%.Apart from their low iron content, another problem with banded iron formations is ...

Experimental Investigation of Different Fineness and Firing

The total number of scans was eight, at a pressure 3 to 4 tons, with a KBr binder on the pellet die that is 12 mm in size. ... Iron Ore pellets were fired at 1250 °C/1300 °C, showing higher C.C.S. than the Iron Ore No.2 pellets (Blaine 1989/2311 cm 2 /g) due to the Ostwald ripening effect. In which finer particles, present in sufficient ...

Analysis of iron ore pellets properties concerning …

The overall Blaine number of blended material was 2200 cm 2 /g. There is no available literature to utilize iron ore slimes directly through the pelletization route. …

Binding mechanisms in wet iron ore green pellets with a bentonite

The moisture content in green pellets with 0.5% bentonite was varied between 7.3% and 9.4%. By increasing the bentonite dosage up to 1.5%, the moisture range suitable for balling could be expanded up to 10.5%. Results from individual micro-balling batches are reported below.

Investigation on Loss on Ignition to Study the Effect of Iron …

The mineralogy of iron ore affects the GCS of the pellets. The Blaine number of iron ore concentrates increases with increasing LOI because of the presence of goethite and kaolinite. The current modified proposed model of the self-preserving curve has become more accurate and adaptable for predicting the pellet size distribution after ...

Effect of high Blaine iron ore fines in hematite ore …

Blaine fineness is one of the most important parameters in pelletising. While the lower Blaine fineness does not provide sufficient strength to the both green pellet and indurated pellet, excessively high Blaine fineness causes problem in pellet making. Optimum Blaine fineness of iron ore in the range of 1700–2250 cm2/g is usually used for …

Effect of Blaine Fineness on the Quality of Hematite Iron Ore Pellets …

The results showed improved properties of iron ore pellets at an optimum Blaine number (2150 cm 2 /g) but, reduction degradation index was found to be very poor for the given ore. Further investigation showed that when MgO containing flux viz. pyroxenite was added, the reduction degradation index and swelling index of the pellets …

Effect of Blaine Fineness on the Quality of Hematite Iron Ore Pellets …

The results showed improved properties of iron ore pellets at an optimum Blaine number (2150 cm(2)/g) but, reduction degradation index was found to be very poor for the given ore. Further investigation showed that when MgO containing flux viz. pyroxenite was added, the reduction degradation index and swelling index of the pellets were improved ...

Analysis of the Influence of Blaine Numbers and Firing

The results showed improved properties of iron ore pellets at an optimum Blaine number (2150 cm2/g) but, reduction degradation index was found to be very poor for the given ore.

Effect of high Blaine iron ore fines in hematite ore …

While the lower Blaine fineness does not provide sufficient strength to the both green pellet and indurated pellet, excessively high Blaine fineness causes problem …

Effect of limestone and dolomite flux on the quality of pellets …

DOI: 10.1016/j.powtec.2020.10.063 Corpus ID: 226333476; Effect of limestone and dolomite flux on the quality of pellets using high LOI iron ore @article{Prusti2020EffectOL, title={Effect of limestone and dolomite flux on the quality of pellets using high LOI iron ore}, author={Pallishree Prusti and Kashinath Barik and Nilima Dash and S. K. Biswal and B. …

Modelling and estimating the Blaine number of iron …

Article. Modelling and estimating the Blaine number of iron ore concentrate by response surface methodology and Monte Carlo simulation. December 2023. …