slag fluidity barite bora

Correlation study between microstructure and fluidity of molten slag

DOI: 10.1016/j.fuel.2022.125031 Corpus ID: 250103321; Correlation study between microstructure and fluidity of molten slag during co-gasification of coal and indirect coal liquefaction residue: Molecular dynamics simulation

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Mechanical and radioactivity shielding performances of mortars …

Barite, colemanite and blast furnace slag wastes are effective to prevent radiation transmission and they seem to be promising materials for gamma ray shielding in mortars. Finally, samples with colemanite and blast furnace slag have low radioactive permeability. These samples should be preferred for places which are exposed to …

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Utilization and efficiency of ground granulated blast furnace slag …

Blast furnace slag is produced in a blast furnace concurrently with Fe. Fig. 1 schematically represents obtaining the blast furnace slag from the iron ore. Iron oxides are reduced to igneous Fe in the furnace by adding a flux such as limestone or dolomite and a fuel and with a reducing agent such as coke [4].The igneous slag indwells on the pig …

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Experimental investigation on barite sag under …

Using drilling fluids with optimum density is one of the most important approaches to stabilize the pressure of the bottom formation and prevent blowout through the drilling process. One of the common …

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Rheological and Mechanical Properties of Heavy Density …

In this study, barite is used as fine aggregate mixed with Portland cement to design HWC. Different barite concrete mixes were designed, where barite is used once as an addition while maintaining constant the amount of cement (400 kg/m3) and as a substituent, with different percentage (38, 46, 53 and 57%) to reach different concrete …

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Correlation study between microstructure and fluidity of molten slag

If the viscosity is lower than 2 Pa·s, the fluidity of the molten slag is too strong and this will lead to the rapid wear of refractory materials in the gasifier walls. Conversely, if the viscosity is higher than 25 Pa·s, the fluidity of the molten slag is too poor and this will cause the undesirable blockage at the slag outlet and the ...

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Fluidity, mechanical properties, shrinkage of alkali-activated slag …

1. Introduction. Alkali-activated slag (AAS), a green cementitious material, can be used to replace ordinary Portland cement (OPC) [[1], [2], [3]]pared with OPC, AAS has outstanding mechanical properties [4] and corrosion resistance [5, 6].Furthermore, AAS has excellent high-temperature resistance [7] compared to OPC [8, 9].Therefore, …

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Review and Perspectives of Ash Slag Fluidity during Co …

The stable fluidity of slag at a high temperature is crucial for the long-period operation of an entrained-flow gasifier. The diversity and difference of coal ash make it difficult to meet the requirements for stable slagging in a gasifier. Consequently, coal blending or adding flux has been employed in the industry to improve the fluidity of coal …

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Basic Oxygen Steelmaking Slag: Formation, Reaction, and …

Basic oxygen steelmaking (BOS) slag, a product of hot metal element (e.g., Si, Mn, Fe, P) oxidation and flux (e.g. lime, dolomite) dissolution, plays a critical role in the production of high-quality crude steel, although its behavior inside the BOS vessel (formation and reaction with metal droplets and gas) is still not clear and its recycling has always been challenging.

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Melting and fluidity properties of refining slag containing …

Long Hu et al. [6] investigated on the melting and fluidity properties of refining slag containing Ce 2 O 3 . They have found that the high basicity refining slag with appropriate content of Ce 2 ...

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Non-hazardous Treatment for Barium Slag Using Phosphogypsum

Barium compounds are important chemical materials obtained from barite. Barium slag (BS) is an insoluble alkali residue derived from the product of barium compounds following the process of carbothermal reduction and water/acid leaching. In this study, two BS-derived samples named BS-YP and BS-ZN were characterized using …

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A Combined Barite–Ilmenite Weighting Material to Prevent …

The findings of this study show that the combined barite–ilmenite weighting material can be a good solution to prevent solids sag issues in water-based fluids; thus, …

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Microfluidic investigation of pore-size dependency of barite …

where (Delta g) [J m −3] is the change is the free energy change Gibbs energy potential per unit volume associated with the change of a molecule in solution to the bulk solid and (gamma ...

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Recent Trends in Advanced Radiation Shielding Concrete for …

The slag aggregate is denser than the barite aggregate because of the high amount of magnetite and hematite in the EAF, which contributes Fe x O y elements and thus results in high gamma ray attenuation. The variations in the composition of industrial waste affect the shielding coefficients, which could outperform heavyweight aggregates, …

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A Simplified Model Applied to the Barite Sag and Fluid Flow …

The resulting model used to predict the barite sag is based on the conservation equations and uses the Eulerian approach to take into account the two …

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AADE-04-DF-HO-20 Improved Prediction of Barite Sag …

There is a relationship between dynamic barite sag and average annular velocity of fluid flowing in the eccentric conduit. Above an average annular velocity of 0.51 m/s [100 …

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AADE-04-DF-HO-21 A Unique Technical Solution to …

A new polymer-coated barite weighting agent for oil-based drilling fluids has been developed to minimize the sag potential whilst maintaining low rheology. This new …

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Rheological studies and numerical investigation of barite sag …

Barite Sag is caused by settling of suspended barite particles, which can lead to variation in drilling fluid density (Basfar et al., 2018). The study of Barite Sag …

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Preparation and Performance Testing of Steel Slag Concrete …

In this paper, steel slag powder was used to replace part of the cement in road concrete, and group tests were carried out on coarse aggregates with different water–cement (W/C) ratios, different steel slag parameters, and different particle sizes. A sample of 100 mm × 100 mm × 100 mm was prepared and cured for 3 days, 7 days, and …

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Barite Sag Measurements | SPE/IADC Drilling Conference …

An approach to obtain static and dynamic barite sag measurement protocols is presented to examine the effects of rheological and viscoelastic properties of typical …

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A preliminary study of aeolian sand-cement-modified gasification slag

The gasification slag originated from Yulin City in western China. A ball mill was adopted to grind the gasification slag. The physical properties of the MGS used were evaluated, as displayed in Fig. 1 and the characteristic indexes are summarized in Table 1.The coefficient of uniformity (C u) of the MGS was 14.61, and its natural gradation was …

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Effects of ultra-fine ground granulated blast-furnace slag on …

The GGBS in this work was commercially available ultra-fine slag of two sizes (V1 and V2), Nitrogen BET Surface area of V2 (3955 m 2 kg −1) was found to be much higher than the V1 (2435 m 2 kg −1).The (CaO + MgO)/SiO 2 ratio by mass (M, coefficient of basicity) was a reliable indicator of reactivity [25], Calculated M = 1.55 of the UFS. …

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Effect of High Temperatures on Mechanical and Shielding

Due to the high prices, the popularity of radiation shielding concrete (RSC) has been greatly limited. To solve this, this research reused the lead–zinc tailings (LZT) as a fine aggregate replacement ranging from 0% to 60% for the RSC. The results revealed that the RSC containing 30% LZT presented better workability and achieved 95.84% of …

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Review and Perspectives of Ash Slag Fluidity during Co …

DOI: 10.1021/acs.energyfuels.3c03900 Corpus ID: 266863421; Review and Perspectives of Ash Slag Fluidity during Co-gasification of Industrial Solid Waste and Coal: Characteristics, Chemistry, Controlling Mechanisms, and Regulation

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A new experimental and numerical simulation method for …

The specific influence of each factor on the slag fluidity is analyzed in detail as shown in Fig. 10 A. Four illustrations (a) (b) (c) (d) show the flow state of the slag for each component with different contents, the inset shows the decreasing contents from left to right. Big, middle, and small in the figure indicate the mass fraction of the ...

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A Taguchi approach for investigating the engineering …

Barite was the most effective parameter on early age compressive strength. This result is related to the addition of barite instead of cement which is an inactive mineral and leads to compressive strength loss. On the other hand, at later ages blast furnace slag has shown pozzolanic activity and became the most effective parameter. •

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What are the Six major roles of the barite powder in Coatings …

Powder coatings: used in powder coatings, barite powder can improve its gloss, fluidity, filling and compatibility with different kinds of pigments. Adhesives: good rheological properties, high ...

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Orthogonal test of alkali-activated slag solidified …

This work investigated the effects of sand content, binder-soil ratio, Na 2 O%, modulus, and liquid-solid ratio on the fluidity, compressive strength, physical performance, water resistance and carbon emission factors of the SCS using alkali-activated slag (AAS). Then, for CS with different sand content, the carbon emissions from cradle to gate ...

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Preparation of Ultra-High Performance Concrete with …

These three mixtures differed in their fluidity. Mix 1-1 with 500 kg/m 3 binder content exhibited a very dry fresh mixture with a slump of 0, mix 1-2 with 700 kg/m 3 binder content had a 130 mm slump, and mix 1-3 with 900 kg/m 3 presented a very good fluidity of 245 mm. The test results show that the slump and spread of fresh concrete improved …

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Barite : Properties, Formation, Uses and Mining Localities

Barite, also known as barium sulfate (BaSO4), is a mineral that has a wide range of industrial applications due to its unique properties. The barium sulfate barite takes its name from the Greek word barys, which means "heavy" a reference to its high specific gravity. It has also been called heavy spar.

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