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SLon vertical ring
and pulsating high gradient magnetic separator utilizes the
combined force field of magnetism, pulsating fluid and gravity
to beneficiate weakly magnetic minerals with the advantages of
large beneficial ratio, high recovery, matrix not easy to be
blocked and excellent performance.We have developed SLon-500, SLon-750,
SLon-1000, SLon-1250, SLon-1500, SLon-1750,SLon-2000 and
SLon-2500 VP
HGMS. Now more than 400 of them have been successfully applied
in China, and export to Peru.
In the following some examples are given of SLon separators
applied in industry.
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The iron ore consists of magnetite and hematite. In 2001, six
SLon-1750 magnetic separators are applied to control the tails
grade of fine hematite. The results of
the flowsheet is: feed grade 30.15%Fe, concentrate
grade 67.50%Fe, iron recovery 76%. The results set up the
historic high record of this plant and the processing coast is
greatly reduced.
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Donganshan
Mineral Processing Plant processes 4.7 million tons of iron
ore per year. Hematite and magnetite are the main iron
minerals. The
new flowsheet consists of gravity separation, magnetic
separation, and reverse-flotation flowsheet. 20 SLon-1750
magnetic separators are used to control the grade of tailing.
The final iron concentrate is above 64%Fe.
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The plant
each year treat 9.0 million tons oxidized iron ore consisting
of magnetite and hematite. Now 15 SLon-2000 are applied
to combine with reverse flotation. The results of the
flowsheet are: feed grade 30.50%Fe, concentrate grade
67.50%Fe, tails grade 11.12%Fe, iron recovery 76.07%.
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There are 9
SLon-1750 and 4 SLon-1500 magnetic separators applied in this
mine to treat refractory hematite ore. The feeding grade is
about 45%Fe. The final iron concentrate grade is about 60%Fe
and the iron recovery is about 76%. The results are much
better than the previous gravity flowsheet.
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The mined ore
consists of magnetite, hematite and siderite. Because of a
relatively high content of phosphorus, the iron concentrate
could not meet the market requirements. Now 18 SLon-1500
magnetic separators are applied to reduce phosphorus, which is
reduced from about 0.4%P to 0.246%P. The quality of iron
concentrate is greatly upgraded.
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5
Slon-2000, 5 SLon-1750, 5 SLon-1500 have been applied and
other 8 SLon-1750 is going to be applied to beneficiate Hai
Nan oxidized iron ore.centrate is greatly upgraded.
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In early
2004, 2 SLon-1750 are applied to beneficiate hematite. The
results of the flowsheet are: feed grade 55.20%Fe, concentrate
grade 65.09%Fe, tails grade 28.10%Fe, iron recovery 86.39%.
Other 2 SLon-1750 will be stalled in this plant in 2005.
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In the
past, the -0.045mm ilmenite fraction was discarded in to the
tails because of lack of high efficient equipment. In 2001,
the plant built up a magnetic-flotation flowsheet to recover
the fine ilmenite from the -0.045mm fraction with 6 SLon-1500
magnetic separators. The total results are: feed grade 11%TiO2,
concentrate grade≥47% TiO2, recovery 44%. Each
year the flowsheet recovers 250,000t fine ilmenite concentrate.
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3 SLon-1500 VP HGMS are applied to recover ilmenite
from Panzhihua tails, 2 of them are used as rougher and the
other is used as cleaner. The total results of this flowsheet
are: feed grade 7.68% TiO2, ilmenite concentrate
grade 47.66% TiO2, TiO2 recovery 31.19%.
Each year 30,000 tons of ilmenite concentrates of good quality
are produced.
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In
2001, a SLon-1500 magnetic separator was applied for purifying
the feldspar in Fujian Province. Fe2O3
in the feldspar can be reduce from 0.49~0.64% to 0.15~0.18% Fe2O3.
In
1998, a SLon-1250 magnetic separator was applied to build a
feldspar processing plant in Anhui Province. The Fe2O3
in the feldspar concentrate is reduced to 0.26% from 1.48% in
the feed ore.
In
2000, a SLon-1250 was applied to purify nephline in Sichuan
Province. The Fe2O3 in the concentrate
is reduced to 0.18% from 1.69% in the feed ore after one
roughing and one cleaning.
In
2000, a SLon-1500 was applied in a quartz processing plant in
Jiangxi Province. The Fe2O3 is reduced
to 0.02% in the concentrate from 0.10% in the feed ore.
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All
of the applications demonstrate that SLon VP HGMS is highly
advanced equipment. It has been widely applied in China to
beneficiate hematite, siderite, ilmenite and to purify
feldspar, nephline, quartz and other nonmetallic minerals.
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Add.:
Shahe Industrial Park,Ganzhou City,Jiangxi Province
P.C.: 341000
Tel: 0797-8186426
Fax: 0797-8186436 E-mail:
slon@slon.com.cn
slon1988@yahoo.com.cn
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