Technology of Backfill Preparation Based on Cement-and-Slag Binder in Orlov Mine

Krupnik, L. A.; Shaposhnik, Yu. N.; Shaposhnik, S. N.; Nurshaiykova, G. T.; Tungushbaeva, Z. K.

doi:10.1134/s1062739117011872

Cited by 4 publications

(1 citation statement)

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“…In terms of the development and development of backfill cementing materials, relevant literature introduces several important functions of backfill bodies and analyzes fly ash, slag, and phosphogypsum generated in other industrial production as cementing materials. Finally, some proportion with good strength and flow performance are applied to actual production [21][22][23]. In order to reduce the harmful element pollution and increase strength of filling body, researchers investigated characteristics of the filling body using the phosphorus gypsum when there is fluoride.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Lead-Smelting Slag as Paste Filling Cementing Material

2022

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Under the current pressure of mineral product price and market competition, as well as the tightening of ecological and environmental protection policies, energy saving, emission reduction and cost reduction, and efficiency increase have become inevitable trends. Lead-smelting slag of smelter, as an industrial byproduct, is harmful solid waste to be eliminated. In this research, a series of experiments on substitute for cement were done for filling cost reduction under premise of guaranteeing the filling strength, using PC32.5 cement as reference cementing material. Meanwhile, with Portland cement clinker, water quenching slag of BF ironmaking, and lead-smelting slag of smelter in different ratios, four cementing materials were made and named as cementing material I, cementing material II, cementing material III, and cementing material IV. Then, the above five cementing materials including PC32.5 cement were mixed, respectively, with tailing and water to prepare paste backfill slurry with different binder-tailing ratio and concentration. Backfill block was made and cured at 20°C; their uniaxial compressive strengths in different curing ages were measured. The result shows the strength of backfill test block using cementing material I (cement clinker and water quenching slag) without lead-smelting slag is far higher than that of test block using PC32.5 cement as cementing material. The strength of block with 16% lead-smelting slag increased dramatically, which was higher than the strength of block using PC32.5 as cementing material. However, the strength of test block decreased when the content of lead-smelting slag reached 32% and 40%. The more lead-smelting slag was added, the worse influence on strength of backfill would be. Because of large specific gravity of lead-smelting slag and low content of CaO, the hydration activity of lead-smelting slag is far lower than that of water quenching slag. Therefore, using moderate lead-smelting slag as substitute for cement will lead to increase of backfill strength and decrease filling cost.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Lead-Smelting Slag as Paste Filling Cementing Material

2022

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Backfilling Mixture Preparation Using Milled Granulated Blast-Furnace Slag

Krupnik

Shaposhnik

et al. 2019

J Min Sci

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Optimization of Grading of Sand in Backfill Using Metallurgical Waste

Rubashkina

Korneichuk

2020

J Min Sci

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It is technologically and economically advisable to optimize grading o f low-quality fine and very fine sand with increased content o f clay and dust particles used in preparation o f cemented backfill mixtures by adding blast-fumace granular slag screenings 0-5 mm in size without preliminary treatment. The relationships o f the size modulus, specific grain area and clay/dust particle content o f sand and the percentage o f slag in the composite aggregate are obtained. It is found that with increasing percentage o f slag in the composite aggregate, water demand lowers owing to the higher size modulus o f the aggregate and due to the decreased content o f clay particles in it. This allows production o f cemented backfill mixtures at the decreased consumption o f cement while the strength and flowability o f the mixtures are preserved.

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Technology of Backfill Preparation Based on Cement-and-Slag Binder in Orlov Mine

Cited by 4 publications

References 1 publication

Experimental Study on Lead-Smelting Slag as Paste Filling Cementing Material

Experimental Study on Lead-Smelting Slag as Paste Filling Cementing Material

Backfilling Mixture Preparation Using Milled Granulated Blast-Furnace Slag

Optimization of Grading of Sand in Backfill Using Metallurgical Waste

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