Volume 02 Issue 11-2022
6
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
02
I
SSUE
11
Pages:
06-09
SJIF
I
MPACT
FACTOR
(2021:
5.
705
)
(2022:
5.
705
)
OCLC
–
1121105677
METADATA
IF
–
5.582
Publisher:
Oscar Publishing Services
Servi
ABSTRACT
Today, as production improves, the demand for expensive components is growing. In addition to production,
productivity in factories has increased and the production of a large number of minerals in industry is increasing. One
of the leading areas of non-ferrous metallurgy is the copper industry. As copper production increases, so does the
amount of industrial waste. 85% of the copper produced in the world is obtained pyrometallurgically. In the production
of pyrometallurgical copper, a large amount of waste in the form of slag from melting furnaces is several times higher
than the cost of finished products. Increased requirements for waste to protect the environment are increasing. A
number of valuable useful components are required from waste slags that are transported and processed, using
innovative technologies. Therefore, the extraction of expensive components from the waste of slag production of
copper is one of the main tasks today.
KEYWORDS
Slag, flotation, flotation agent, expensive components, production, productivity, non-ferrous metallurgy, copper
industry, copper industry, innovative technologies.
INTRODUCTION
In global practice, the copper production sector has a
strong growth trend, and the demand for them is also
increasing. There are a lot of waste slag processing
technologies and they are paying off. With the
Research Article
STUDY OF THE POSSIBILITIES OF EXTRACTING EXPENSIVE
COMPONENTS FROM COPPER INDUSTRY SLAG WASTE
Submission Date:
October 25, 2022,
Accepted Date:
October 30, 2022,
Published Date:
November 05, 2022
Crossref doi:
https://doi.org/10.37547/ajast/Volume02Issue11-02
Maftun K. Kuralova
Master Student Almalyk Branch Of Tashkent State University, Uzbekistan
Journal
Website:
https://theusajournals.
com/index.php/ajast
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Volume 02 Issue 11-2022
7
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
02
I
SSUE
11
Pages:
06-09
SJIF
I
MPACT
FACTOR
(2021:
5.
705
)
(2022:
5.
705
)
OCLC
–
1121105677
METADATA
IF
–
5.582
Publisher:
Oscar Publishing Services
Servi
development of high-efficiency furnaces, the volume
of waste slag is increasing.
Currently, a number of scientific and practical results
are being carried out on the processing of waste slags
in the form of reburner furnaces, oxygen-torch
furnaces, Vanyukov furnaces, zinc production cakes
and converter slags[1].
The main findings and results
We are using flotation technology to improve copper
production technology and extract precious metals
such as copper, gold, and silver from waste slag. Today,
flotation is a highly effective and inexpensive
processing technology for the extraction of precious
metals. Based
on
the flotation
technology,
experimental and laboratory works are being carried
out on converter and waste slag. It was studied that
the change of the pH value of the aqueous phase
during flotation is of significant importance.
The chemical composition of converter and waste slag
is presented in Table 1.1.
Chemical composition of converter and waste slags of Olmaliq MMC JSC
Grinding waste slag in the converter slag mill was
carried out in two stages - stage 1: carried out in a jaw
crusher, stage 2: carried out in a shaft crusher. 1000 g
of crushed enrichment is taken and the grinding
process is carried out in drum mills for 60 minutes.
The converter slag from the mill is enriched by flotation
method. Converter slag enrichment was carried out on
the basis of the following reagents: Kst - 112 g/t,
foaming agent T-92 70 g/t, urea 7.5 g/t.
Converter slag was carried out for 46 minutes
according to the technological scheme of flotation,
that is, during the flotation time, the degree of
separation of the flotation component into enrichment
and the quality of enrichment are determined. The
converter slag flotation process, which crushed the
slag to a size of -0.074 mm, was carried out in the 3l
laboratory FM. Kst, urea, T-92 flotation reagents were
used for the flotation process. Experiments are carried
out according to the scheme, they consist of: basic
flotation, control flotation and two cleaning flotation.
№
Type of
slag
Composition , %
Cu
Mo
Fe
SiO
2
Al
2
O
3
S
Zn
Au
g/t
Ag g/t
1
Convert
er slag
2,10
0,0068 41,82
26,92
3,97
1,48
1,01 1,0
12,20
2
Waste
slag
0,96
0,0070 34,55
34,54
5,71
1,38
0,91 0.39
5,75
Volume 02 Issue 11-2022
8
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
02
I
SSUE
11
Pages:
06-09
SJIF
I
MPACT
FACTOR
(2021:
5.
705
)
(2022:
5.
705
)
OCLC
–
1121105677
METADATA
IF
–
5.582
Publisher:
Oscar Publishing Services
Servi
Kst - 78.4 g/t, urea - 5.25 g/t, T-92 - 49 g/t flotation
reagents were given to the main flotation and this
process was carried out for 15 minutes. Kst - 33.6 g/t,
urea - 2.25 g/t, T-92 - 21 g/t flotation reagents are given
to the control flotation and this process is carried out
for 20 minutes, after which the concentrate from the
main flotation is taken to the first cleaning flotation ,
the process takes 7 minutes. The concentrate obtained
from the first treatment goes to the second treatment
flotation, where the process is carried out for 4
minutes. During the flotation, the pH value of the
aqueous phase showed 11.2. Our finished concentrate
is produced in the second cleaning flotation, we dry
this enrichment and send it for analysis. According to
the analysis of the analysis, we can see a significant
increase in precious metals.
The waste from the mill is enriched by flotation
method. Enrichment of waste slag was carried out on
the basis of the following reagents: Kst - 90 g/t,
foaming agent T-92 was given 60 g/t, urea 7.5 g/t.
Flotation in waste slag was carried out for 46 minutes
according to the technological scheme. 3L was
performed in a laboratory FM using waste slag crushed
to a size of -0.074 mm. Kst - 63 g/t, urea - 5.25 g/t, T-92 -
42 g/t flotation reagents were given to the main
flotation and this process was carried out for 15
minutes. Kst - 27 g/t, urea - 2.25 g/t, T-92 - 18 g/t flotation
reagents are given to the control flotation, and this
process is carried out for 20 minutes, after which the
concentrate from the main flotation is taken to the first
cleaning flotation, the process It is 7 minutes. The
concentrate from the first treatment is sent to the
second treatment flotation where the process is
carried out for 4 minutes. During flotation, the pH value
of the aqueous phase was 11. Our finished concentrate
is produced in the second cleaning flotation, we dry
this enrichment and send it for analysis. According to
the analysis of the analysis, we can see that the results
obtained from the waste slag in the extraction of
precious metals are 5-6% higher than the results
obtained from the converter slag.
TECHNOLOGICAL SCHEME
Volume 02 Issue 11-2022
9
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
02
I
SSUE
11
Pages:
06-09
SJIF
I
MPACT
FACTOR
(2021:
5.
705
)
(2022:
5.
705
)
OCLC
–
1121105677
METADATA
IF
–
5.582
Publisher:
Oscar Publishing Services
Servi
According to the results obtained from the
experiments, we can see that the extraction efficiency
of copper and precious metals from the converter slag
is high. It is lower in waste slag compared to converter
slag, but in flotation technology, waste slag can be
enriched. Based on the flotation technology today,
extraction of precious metals is highly efficient and
relatively low cost.
REFERENCES
1.
Sanakulov K.S., Khasanov A.S. Processing of
slag from copper production. Tashkent.
Publishing house “Science”. Uzbekistan, 2007.
P.256.
2.
Askarova N.M., Samadov A.U. An innovative
approach to the preparation of dump slags
from copper production for further processing
/ Universum: Engineering Sciences / Moscow
2020. P. 45-48
3.
Sabanova M.N., Orekhova N.N. Prospects for
the use of flotation for the processing of
environmentally hazardous stale slags from
copper smelting. UDC 669.054.82.622.765
