— bulk density of C2 was clearly lower than that of C1 which indicated that adding a small amount of gangue could reduce the density of the proppants However when more coal gangue is added C3 and C4 the bulk density for low sintering temperature increased mainly for sintering temperatures above 1350 °C On the other
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Gangue % % maximum Bulk density g/cm3 Apparent density g/cm3 Nominal size 110 x 50 x 30mm Contact us Are you interested to know more and would like to get in touch with one of our experts Get in touch Share article
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— The effects of different foaming processes on the coal gangue ceramsite bulk density are investigated The results of foaming agent selection and proportion ing test are shown in Table 2
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Overview Hot Briquetted Iron HBI is a premium form of DRI that has been compacted at a temperature greater than 650° C at time of compaction and has a density greater than 5 000 kilograms per cubic metre 5 000 kg/m 3 HBI was developed as a product in order to overcome the problems associated with shipping and handling of DRI due to the
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Bulk density and apparent density of the ceramic proppant were measured by a density bottle First weigh the 25 mL density bottle Then the proppant were loaded into the density bottle until the 25 mL scale Do not shake and weigh the mass Repeat three times to take the average The bulk density was the net weight of the proppant
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— CM CFM and CSM test steps are as follows Fig 3 The CGA raw was soaked in water for 1 h 20 mm above the top of the aggregate and then the cement cement 10% FA and cement 10% SF were added into pre wetted CGA raw to stir and shake until the surface of CGAraw was completely wrapped After resting for 12 h the
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Coal gangue CG a coal mining and washing byproduct constitutes a significant amount of the industrial solid waste generated in China However the bulk density of H2 and H3 increased rather than decreased with an increasing Po value which may loosen the microstructure at 800 900 °C These tendencies can be attributed to the weight
— The stress bulk density curve of gangue samples in the compaction process is obtained as shown in Figure 5 The variation of gangue bulk density in different stages is shown in
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— The replacement of quartz sand with perlite waste in an amount of 40% by weight reduces density by about 45% therefore the amount of perlite waste has a significant influence on the bulk density of specimens As the bulk density of AAC decreases the strength of concrete decreases as well Analysis of the results showed that the values
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— Bulk density and apparent density of the proppants rise and thereafter down with increasing the sintering temperature The proppants sintered at 1400 °C have the best performance with g/cm 3 of bulk density g/cm 3 of apparent density and % of breakage ratio under 52 MPa closed pressure The prepared ceramic proppants
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— The apparent density loose bulk density and tap bulk density decreased by % % and % respectively while the void ratio and water absorption increased by % and %
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— The apparent density of gangue is approximately 2600 kg/m 3 which is similar to natural stone while its bulk density is approximately 1200 kg/m 3 which belongs to light weight aggregate The water absorption and crushing value of gangue approximately 5% and 20% respectively are relatively larger than those of natural stone approximately
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— Coal gangue an industrial solid waste discarded from coal mining and processing was used as the sole raw material to prepare brick The coal gangue was crushed homogenized milled and then pressed into green compacts The dried compacts were sintered at different temperatures for 2 h Bulk density of the brick was measured
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