Importance of Nylon Fine Sieve to the Grinding Process
Due to the characteristics of high frequency vibration sieve, the final concentrate eliminate the coarse level above +0 175 mm , and the +0. 098mm grain size content is only 0.6%, far lower than the fixed nylon fine sieve's l2. the improvement of Concentrate particle size composition , not only improve the concentrate grade but also reduce the load of circulating, reducing wear, and laid the foundation for the pellets to improve the effect of making the ball, which is the original fixed nylon fine sieve incomparable. Shougang mining vibrating screen replaces the two fixed nylon fine sieve, make the grinding and separation process fully simplified, reduce the two processing operations pump, and the secondary pump motor overload problem in the beneficiation processes has been solved, finally, we achieve the purpose of simplifying reducing the consumption.
Since the late 1970s,Anshan Iron and Steel Group,
Anshan Mining Company Dagushan Concentrator stage grinding a fine sieve and then
grinding a single magnetic separation process , the concentrate grade is 66.50%
for the Anshan Iron and Steel , provide quality fine material ,this is a great
contributed . However, the prominent contradictions of the process is the fine
sieve grinding cycle level is big , this constraints people further improve the
quality of most production. In fact, the fundamental reason is the low
efficiency of fine screening machine. Test, 1, Sec fine sieve screening
efficiency of only 12.61 percent, three, Sec fine sieve screening efficiency of
only 26 20%; sieve grade is 55 74% 59 72qo between -0.074 mm qualified grain
level content is 85% L,. Screening efficiency is low, making the three sections
of the grinding load increases, up to 114.01 t / h; large number of qualified
fine products enter the mill operating, cause the product wear excessively and
increase energy consumption and material consumption. in recent years , facing
the increasingly demanding and increasingly fierce market competition market
,Anshan Iron and Steel Company emphases the quality of iron ore concentrate and
ball mill , the
existing level of quality and yield have been unable to meet market demand. In
order to solve this contradiction, Dagushan Concentrator introduction of Lu Kai
Technology Co., Ltd in Tangshan has produced the MVS high-frequency
electromagnetic vibration vibrating sieve, instead of the original
high-frequency vibration nylon fine sieve, formed the fine sieve and then have
carried out the grinding process of industrial test.
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