Paper: Effect of deep mine temperature conditions on the …
Effect of deep mine temperature conditions on the heat development in cemented paste backfill and its properties. ... M 2010, 'A contribution to Understanding the Effects of Temperature on the Mechanical Properties of Cemented Mine Backfill', Engineering Geology, vol. 14, no. 3-4, pp. 397-413. ...
Effect of high-temperature environment of mine goaf on …
Liu et al. researched the effect of temperature on coal permeability and found that, when temperature was 400 °C-600 °C, the coal sample began to pyrolyze, while the mechanical properties of coal decreased, the fractures continued to extend, and the permeability increased [18]. A series of studies have shown that high temperature …
Effects of Vegetation Reclamation on Temperature and …
Effects of Vegetation Reclamation on Temperature and Humidity Properties of a Dumpsite: A Case Study in the Open Pit Coal Mine of Heidaigou Yang Zhao Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China …
A contribution to understanding the effects of curing temperature …
DOI: 10.1016/J.ENGGEO.2010.05.016 Corpus ID: 129858080; A contribution to understanding the effects of curing temperature on the mechanical properties of mine cemented tailings backfill
How temperature affects biochar properties for application in coal mine
The study concluded that low to moderate pyrolysis temperature was best suited for coal mine spoil restoration. • Meta-analysis on the effect of pyrolysis temperature on biochar physio-chemical and nutritive properties was stated. • Common effect size metric and response ratio used for meta-analysis was clarified.
Recycling lithium mine tailings in the production of low temperature …
The management of mining wastes remains an important issue to be addressed. Low temperature (700–900 °C) ceramics with interesting physical properties were successfully prepared from quartz, feldspar sand lithium mine tailings (QFS). Ladle slag (LDS) was used as increasing green strength agent in some compositions.
[PDF] Effect of deep mine temperature conditions on the …
Results showed that deep mine temperatures have a significant effect on the properties of CPB. Increasing the curing temperature increases the rate of CPB …
Effect of temperature on safety and stability of gas …
The apparatus used for conducting gas hydrate formation and dissociation experiments is shown in Fig. 1.Coal mine gas hydrate formation and dissociation experiments were performed in a 316 stainless steel reactor with an internal diameter of 10.2 cm and height of 26.5 cm. Viewing windows with a height of 14 cm at the front and …
Effects of mine water on growth characteristics of ryegrass …
The effects of mine water on the physical properties of the soil matrix are shown in Fig. 4. As illustrated in Fig. 4 a, the conductivity of the B1–B4 soil samples was significantly higher than that of the soil base sample, and the conductivity of the soil samples increased markedly as the proportion of mine water increased ( P < 0.01).
A contribution to understanding the effects of curing …
A contribution to understanding the effects of curing temperature on the mechanical properties of mine cemented tailings backfill | Semantic Scholar. DOI: …
Effects of Vegetation Reclamation on Temperature and …
Vegetation cover greatly influences the microclimate of a landscape, which plays an important role in ecosystem function and health. The following study examines the influence of different vegetation types on the microclimate of a surface mine reclamation site. Average soil and air temperatures are significantly lower, while relative humidity is …
Effect of deep mine temperature conditions on the heat
Request PDF | On Jan 1, 2014, Mamadou Fall and others published Effect of deep mine temperature conditions on the heat development in cemented paste backfill and its properties | Find, read and ...
Effect of environmental factors on mechanical properties …
The wrapping method is recommended to reduce the impact of negative temperature and moisture on mine overburden subgrade. Discover the world's research 25+ million members
Effect of deep mine temperature conditions on the heat …
Results showed that deep mine temperatures have a significant effect on the properties of CPB. Increasing the curing temperature increases the rate of CPB strength …
The temperature of Britain's coalfields | Quarterly Journal of
Volume 54. https://doi/10.1144/qjegh2020-109. PDF/EPUB. Abstract. Low-temperature heat recovery, cooling and storage schemes, using abandoned flooded mine workings, …
Effect of Curing Temperature under Deep Mining Conditions …
The only way to develop metal mines in the future is to reach the deeper parts of the earth [ 2 ]. However, by increasing the mining depth, geological conditions …
EVALUATION OF GOLD MINE TAILINGS IN CEMENT MORTAR: INVESTIGATION …
Abstract. This study presents an experimental investigation on the influences of gold mine tailings as a substitute for cement. Various ratios of air-entraining and superplasticizer admixtures were used in the determined composition of gold mine tailing-containing mortars.
Recycling lithium mine tailings in the production of low temperature …
Request PDF | Recycling lithium mine tailings in the production of low temperature (700–900 °C) ceramics: Effect of ladle slag and sodium compounds on the processing and final properties | This ...
Changes in physicochemical properties on a chronosequence of gold mine
Understanding the trajectory of changes in substrate physicochemical properties is critical for revegetation of mine tailings. The study tracked changes of selected physicochemical properties as proxies of pedogenesis over time and across different topographic positions on a chronosequence of six abandoned gold tailings (10, …
The effect of temperature on mine rocks
Hartman, I., and Greenwald, R.P., Effect of changes in moisture and temperature on mine roof: U.S. Bureau of Mines, Report of Investigations. 35SB, 1941, 40. pp. objectiVi s were to determine the relative importance of. humidity. and temp-erature changes on the expansion and contraction of mine-roof rock samples
Effects of mine strata thermal behavior and mine initial
The model was used to examine the effects of the constant mine strata temperature assumption, initial mine air temperature, initial mine strata surface temperature (MSST), initial mine strata temperature at depth (MSTD) and mine strata thermal behavior on RA internal air temperature using 117 W (400 Btu/h) of sensible heat input per simulated ...
Effects of activator type/concentration and curing temperature …
The effects of different contents of MK and water glass(WG) on the mechanical properties, setting time and rheological properties of the materials were investigated separately.
(PDF) Effect Of Temperature On Biochar Properties During Paper Mill
The effect of pyrolyser temperature and sludge retention time on biochar yield was studied and the results were quantified in terms of % biochar yield. Nitrogen gas was used as sweep gas for ...
(PDF) Foundation Research on Physicochemical Properties of Mine
High temperature in deep mines has become the main concern to limit the production capacity of mines. To mitigate the adverse impact of the underground high-temperature environment on mine ...
Understanding the impact of geotechnical ore properties …
Section snippets JKMRC background – Mine to Mill models. Mine to Mill is an approach developed at Julius Kruttschnitt Mineral Research Centre (JKMRC) that "involves identifying the leverage that blast results have on different downstream processes and then optimising the blast design to achieve the results that maximise the overall …
Mine-to-mill optimisation: effect of feed size on mill …
Engineering. Modifying blasting practices to achieve a more suitable mill feed size – which varies according to the crushing/grinding circuit – can achieve up to a 30% increase in throughput. Following an initial benchmarking of an operation's practices, SRK can advise on how value-added blasting will deliver improvements in both mill ...
Boiler Performance and Mill Outlet Temperature
The mill outlet temperature of coal-air mixture is maintained between 65 to 90 degree centigrade in the case of low and medium volatile coal. In the case of high volatile coal, while the lower limit generally remains as 65 degree centigrade, the upper limit is restricted to a lower level depending on percentage of volatile content in coal.
Effect of calcination temperature on structural, optical and
In the present work, we have investigated the role of calcination temperature in altering the structural, optical and antibacterial properties of ball mill synthesized Co3O4 nanoparticles. The outcomes of X-ray diffraction patterns and their Rietveld refinement confirm the presence of spinel cubic phase of Co3O4 and lattice …
Effect of environmental factors on mechanical properties …
The infiltration of sulphate solution turns the mine overburden filler into weak frost heaving soil. The mine overburden with a CGC of 40% – 60% can be selected to improve the environmental adaptation. The wrapping method is recommended to reduce the impact of negative temperature and moisture on mine overburden subgrade.
Effects of mineral additives and age on microstructure …
The effect of GBS and FA, which were replaced by 10% and 30% instead of OPC in CMB samples, on sand-containing/non-sand backfills and difference between them are also given in Fig. 4a and 4b. One can infer that the maximum strengths for CBM samples come about after curing ages of 90 days, and each filling sample exhibits …