Valuable (worthy) mineral was made hydrophobic while valueless (gangue
) minerals hydrophilic with flotation reagents.
Besides, more than 60% of the sample grain size was reduced to <106 microns, when subjected to a grinding interval of up to 25 minutes, thereby, enhancing liberation of ore from gangue
and hence a relatively high recovery of Fe and Cu.
With changing weather and climate change new viruses and mutated old viruses have become endemic to Pakistan, she said from simple flu to gangue
and chickungunya to Ebola and West Nile it is difficult to make the diagnosis and prognosis, without testing the viral cultures.
paste filling is a backfill mining technique that has the dual aim of reducing environmental pollution caused by coal gangue
and flyash and lessening the risk of subsidence .
In consideration of the particularity of the arrangement of working faces in the SBBM and the filling of gangue
in the gob, whether the empirical formula in the Regulations is still valid in SBBM process needs further investigation.
Niu, "Pollution extents of organic substances from a coal gangue
dump of Jiulong Coal Mine, China," Environmental Geochemistry and Health, vol.
backfilling GER (Figure 1(b)) is an innovative mining technology based on gob-backfilled adaptive to multiple complex mining geological conditions without a coal pillar .
 evaluated the sensitivity of cement, fly ash, and coal gangue
with different ratios and paste concentrations on various performance indexes of coal gangue
and gypsum body filling and the trend of each index with each factor.
A large portion up to 70 to 80% of the feed consists of gangue
When the mined out space cannot be fully filled by caving strata under the loading key strata and there is free space between the caved coal gangue
and loading key strata, rock block N and rock block M will form the "step beam" structure.
minerals were composed mainly of quartz and small amounts of mica and kaolinite.
Faltou uma analise mais aprofundada das divergencias entre os [phrase omitted] (taizidang) ou "faccao dos principes", composta por herdeiros de lideres revolucionarios e guiada pela "Gangue
de Shanghai", defensora de um liberalismo economico, e os [phrase omitted] (tuanpai) ou "faccao da liga", cujos membros cresceram no partido participando desde jovens na Liga da Juventude Comunista Chinesa, defensores de politicas de justica social, igualdade economica e desenvolvimento regional balanceado, levando a generalizacoes facilmente contestadas a partir da analise de dados.