METHOD FOR THREE-STAGE DRYING OF PELLETS IN CALCINING CONVEYOR MACHINE

METHOD FOR THREE-STAGE DRYING OF PELLETS IN CALCINING CONVEYOR MACHINE

FIELD: technological processes; metallurgy. ^ SUBSTANCE: invention is related to the field of iron-ore raw materials preparation in ferrous metallurgy, in particular to production of iron-ore pellets. Method for three-stage drying includes the first stage of drying with filtration of coolant with te...

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Hauptverfasser: NEVOLIN VLADIMIR NIKOLAEVICH, EVSTJUGIN SERGEJ NIKOLAEVICH, SOLODUKHIN ANDREJ ALEKSANDROVICH, KLEJN VIKTOR IVANOVICH, ABZALOV VADIM MANNAFOVICH
Format: Patent
Sprache:eng ; rus
Schlagworte:
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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creator NEVOLIN VLADIMIR NIKOLAEVICH
EVSTJUGIN SERGEJ NIKOLAEVICH
SOLODUKHIN ANDREJ ALEKSANDROVICH
KLEJN VIKTOR IVANOVICH
ABZALOV VADIM MANNAFOVICH
description FIELD: technological processes; metallurgy. ^ SUBSTANCE: invention is related to the field of iron-ore raw materials preparation in ferrous metallurgy, in particular to production of iron-ore pellets. Method for three-stage drying includes the first stage of drying with filtration of coolant with temperature of 250-400°C bottom-up and two stages of drying with filtration of coolant bottom-up. At the first stage of drying, drying time makes 30-40 % from the total time of drying at filtration rate of 1.3-1.5 m/sec, and at the second and third stages of drying at every stage - by 30-35 % from total time of drying at the rate of filtration of 0.8-1.0 m/sec. Coolant temperature at the second and third stages makes 250-400°C and 500-800°C accordingly. ^ EFFECT: intensification of pellets layer drying process in three stages with maximum possible coolant parameters, optimal distribution of drying time at every stage depending on initial humidity of pellets and height of layer.
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subjects CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
title METHOD FOR THREE-STAGE DRYING OF PELLETS IN CALCINING CONVEYOR MACHINE
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