ВЛИЯНИЕ СПОСОБОВ ОБОГАЩЕНИЯ УГЛЯ НА ВЫХОД КОНЦЕНТРАТА В ТЕОРЕТИЧЕСКОМ БАЛАНСЕ ПРОДУКТОВ НА ПРИМЕРЕ ДЕНИСОВСКОГО МЕСТОРОЖДЕНИЯ ЮЖНО-ЯКУТСКОГО КАМЕННОУГОЛЬНОГО БАССЕЙНА
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проблема влияния способов обогащения угля в схеме углеобогатительной
фабрики на результат расчета теоретического баланса продуктов на примере
исследований угля Денисовского месторождения Южно-Якутского
каменноугольного бассейна.
Ключевые слова: фракционный состав, обогатимость угля, баланс продуктов.
KOZLOV V.A.
EFFECT
OF THE COAL PREPARATION METHODS ON THE CONCENTRATE YIELD IN THE
THEORETICAL COAL-CLEANING BALANCE IN TERMS OF THE DENISOVSKY COALFIELD,
SOUTH YAKUTIAThe author points at the presence of influence
exerted by coal preparation methods used at a coal-cleaning plant on
the theoretical coal-cleaning balance calculation in terms of the
analysis of coal from the Denisovsky coalfield in South Yakutia. The
calculation of the theoretical coal-cleaning balance should account for
dressing processes included in the coal-cleaning plant flowsheet, and
size classification of coal should be performed accordingly. The
calculation should take into account difference of physical principles
of dressing processes, e.g., gravity preparation in jig washer or
float-and-sink cyclone and foam flotation of slurry coal. In this case,
the theoretical coal-cleaning balance depends both on the float-and-sink
analysis data and the slurry coal flotation results, and the calculated
concentrate yield is in this case lower than in the common calculation
based on the float-and-sink analysis outcome. A real-world yield of
concentrate, considering errors of coal classification on the available
washing equipment, cannot exceed the theoretical concentrate yield.
Thus, we have an appropriate maximum concentrate yield constraint. The
knowledge of this fact will allow tender committees to appreciate
competitive bids on new coal preparation plant projects.
Key words: fractional composition, coal washability, coal-cleaning balance, concentrate yield, ash content, coal flotation.
Номер: 2
Год: 2014
ISBN:
UDK:
DOI:
Авторы: КОЗЛОВ В.А.