gangue


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gangue

, gang
valueless and undesirable material, such as quartz in small quantities, in an ore

gangue

[gaŋ]
(geology)
The valueless rock or aggregates of minerals in an ore.
References in periodicals archive ?
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.
Coal gangue 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 [1].
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.
The gangue 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 [1].
[11] 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 minerals.
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.
The gangue 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.