SU139838A1 - The method of roasting zinc concentrates in fluidized bed furnaces - Google Patents

The method of roasting zinc concentrates in fluidized bed furnaces

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Publication number
SU139838A1
SU139838A1 SU691966A SU691966A SU139838A1 SU 139838 A1 SU139838 A1 SU 139838A1 SU 691966 A SU691966 A SU 691966A SU 691966 A SU691966 A SU 691966A SU 139838 A1 SU139838 A1 SU 139838A1
Authority
SU
USSR - Soviet Union
Prior art keywords
fluidized bed
zinc
bed furnaces
zinc concentrates
roasting
Prior art date
Application number
SU691966A
Other languages
Russian (ru)
Inventor
В.Д. Королева
В.С. Ловчиков
Ф.М. Лоскутов
Original Assignee
В.Д. Королева
В.С. Ловчиков
Ф.М. Лоскутов
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by В.Д. Королева, В.С. Ловчиков, Ф.М. Лоскутов filed Critical В.Д. Королева
Priority to SU691966A priority Critical patent/SU139838A1/en
Application granted granted Critical
Publication of SU139838A1 publication Critical patent/SU139838A1/en

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Description

Примен емый окислительный обжиг цинковых концентратов особенно с высоким содержанием железа, проводимый в печах кип щего сло , не обеспечивает разрушени  ферритов цинка и повышени  его выхода в процессе выщелачивани  цинкового огарка.The oxidative roasting of zinc concentrates, especially those with high iron content, carried out in fluidized bed furnaces, does not ensure the destruction of zinc ferrites and an increase in its output during the leaching of zinc cinder.

Предложенный способ обжига даже высокожелезистых цинковых концентратов в кип щем слое позвол ет получить огарки, содержащие около 98% кислоторастворимого цинка, а при выщелачивании с хорощей промывкой кеков переводить в раствор 97% цинка. Это достигаетс  применением нового режима восстановлени  ферритов цинка из цинковых огарков.The proposed method of roasting even high-iron zinc concentrates in a fluidized bed makes it possible to obtain cinders containing about 98% of acid-soluble zinc, and when leaching with choruses, washing cakes in a solution of 97% of zinc. This is achieved by using a new mode for reducing zinc ferrite from zinc butting.

По предложенному способу процесс обжига провод т следующим образом. Гор чий огарок после окислительного подают в печь кип щего сло , в который поддерживают слабовосстановительную атмосферу , содержащую 6-8% окиси углерода, при 700-800°. При этих услови х протекает реакци  разрущени  феррита цинка путем его восстановлени :According to the proposed method, the burning process is carried out as follows. A hot calcine after oxidizing is fed to a fluidized bed furnace, which is maintained in a weakly reducing atmosphere containing 6–8% carbon monoxide at 700–800 °. Under these conditions, the reaction of destruction of zinc ferrite proceeds through its reduction:

ZnO РеаОз + СО - ZnO + РезО4 -ь СО,ZnO ReaOz + CO - ZnO + ResO4 - CO,

Из восстановленного огарка даже в слабокислых растворах цинк выщелачиваетс  практически нацело, а железо, переведенное преимущественно в магнетит, раствор етс  лищь в немного большем количестве, чем при выщелачивании невосстановленного огарка. Сульфаты цинка и других металлов не восстанавливаютс  до сульфидов, а диссоциируют, в результате чего достигаетс  высока  десульфураци . из восстановленного огарка выщелачиваетс  с большой полнотой.From the reduced cinder, even in weakly acidic solutions, zinc leaches almost completely, and the iron, which is predominantly converted to magnetite, dissolves only a little more than the leaching of unresolved cinder. Zinc sulphates and other metals are not reduced to sulphides, but dissociate, resulting in high desulfurization. from the recovered cinder, it is leached with great fullness.

Предмет изобретени Subject invention

Способ обжига цинковых концентратов в печах кип щего сло , отличающийс  тем, что, с целью разрушени  ферритов цинка и повыщени  выходов цинка в процессе выщелачивани , цинковый огарок, полученный в результате окислительного обжига, обрабатывают при 700-800° в печи кип щего сло  в слабовосстановительной атмосфере, содержа шей 6-8% окиси углерода.The method of roasting zinc concentrates in fluidized bed furnaces, characterized in that, in order to destroy zinc ferrites and increase the zinc yields during the leaching process, zinc calcination obtained as a result of oxidative roasting is processed at 700-800 ° in a fluidized bed furnace in weak recovery atmosphere containing 6–8% carbon monoxide.

SU691966A 1961-01-03 1961-01-03 The method of roasting zinc concentrates in fluidized bed furnaces SU139838A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU691966A SU139838A1 (en) 1961-01-03 1961-01-03 The method of roasting zinc concentrates in fluidized bed furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU691966A SU139838A1 (en) 1961-01-03 1961-01-03 The method of roasting zinc concentrates in fluidized bed furnaces

Publications (1)

Publication Number Publication Date
SU139838A1 true SU139838A1 (en) 1961-11-30

Family

ID=48295904

Family Applications (1)

Application Number Title Priority Date Filing Date
SU691966A SU139838A1 (en) 1961-01-03 1961-01-03 The method of roasting zinc concentrates in fluidized bed furnaces

Country Status (1)

Country Link
SU (1) SU139838A1 (en)

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